• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    flow meter, and, method to adapt a meter in the opening. a method for fitting a gauge in the opening by providing a fitting body in the opening having a hole, an opening plate, a plurality of threaded holes and a plurality of pressure sensors installed in the plurality of threaded holes. the method additionally includes removing the opening plate and the plurality of pressure sensors from the fitting body in the opening and installing a plurality of transducers in the plurality of threaded holes. at least one of the plurality of transducers is configured for general signal and at least one of the plurality of transducers is configured to receive signal. in addition, the method includes measuring the flow rate of a fluid flow passing through the hole based on an output from each of the plurality of transducers.
    公开号:BR112015011008B1
    申请号:R112015011008-8
    申请日:2013-11-11
    公开日:2020-12-15
    发明作者:Darren Scott Schwarz
    申请人:Daniel Measurement And Control, Inc.；
    IPC主号:
    专利说明:

    [001] This application claims the benefit of United States Patent Application No. 13 / 676,287 filed on November 14, 2012, entitled “System and Method for Ultrasonic Measurement Using a Meter Fit in the Opening” which is hereby , incorporated by reference in its entirety. DECLARATION REGARDING RESEARCH SPONSORED BY THE FEDERAL GOVERNMENT OR DEVELOPMENT
    [002] Not applicable. FUNDAMENTALS Technical Field:
    [003] Disclosure generally refers to the measurement of the flow of a flow of fluid that passes through a section of piping. More particularly, the disclosure refers to adapting a meter fitting in the opening to receive and measure the flow using optical or ultrasonic measurement techniques. Technology Background:
    [004] In pipeline operations and other industrial applications, flow meters are used to measure the volumetric flow of a gaseous or liquid flow stream that passes through a section of piping. Generally, it is desirable to know precisely the amount of fluid flow in the stream and, in particular, accuracy is required when the fluid is changing direction or during “custody transfer”. Even where transfer of custody is not taking place, however, accurate measurement is desirable.
    [005] Flowmeters to measure the flow of a fluid in a pipe section are available in several different forms. A common flow meter is an opening gauge that measures pressure on either side of a plate with an opening extended by the flow to determine the flow through the pipe section. Other types of meters include ultrasonic and optical meters, in which they employ ultrasonic acoustic signals and beams of light, respectively, to measure flow. SUMMARY
    [006] Apparatus and method for using a measuring body in the opening to perform ultrasonic and optical measurements are disclosed here. In one embodiment, a flow meter includes a fitting body in the opening. The plug-in body at the opening includes a housing, a hole for passing a fluid stream and a plurality of threaded holes. The housing is configured to accommodate an opening plate. The flow meter also includes a first ultrasonic transducer disposed in one of the pluralities of the screw holes. The first ultrasonic transducer is configured to generate and receive an acoustic signal.
    [007] Some modalities are directed to a flow meter that includes a fitting body in the opening. The plug-in body at the opening includes a housing, a hole for passing a fluid stream, and a plurality of threaded holes. The flow meter additionally includes a first ultrasonic transducer arranged in a first of the plurality of threaded holes. The housing is configured to accommodate an opening plate and the opening plate is not installed inside the housing. The first and second ultrasonic transducers are each configured to generate and receive an acoustic signal.
    [008] Other modalities are directed to a method of adapting a meter at the opening. The method includes providing a fitting body in the opening having a hole, an opening plate, a plurality of threaded holes and a plurality of pressure sensors installed in the plurality of threaded holes. Additionally, the method includes removing the opening plate and the plurality of pressure sensors from the fitting body in the opening and installing a plurality of transducers in the plurality of threaded holes. At least one of the plurality of transducers is configured to generate a signal, at least one of the plurality of transducers is configured to receive a signal. Additionally, the method includes measuring the flow rate of a fluid flow that passes through the hole based on an output from the plurality of transducers. BRIEF DESCRIPTION OF THE DRAWINGS
    [009] For a detailed description of the exemplary disclosure modalities, reference will now be made to the attached drawings in which:
    [0010] Figure 1 shows a side view in cross section of a flow meter at the opening;
    [0011] Figure 2 shows a front cross-sectional view of a flow meter at the opening;
    [0012] Figure 3 shows a side view in cross section of an ultrasonic flow meter;
    [0013] Figure 4 shows a flow diagram for a method for converting a meter at the aperture to an ultrasonic or optical meter according to the principles disclosed here;
    [0014] Figure 5 shows a cross-sectional top view of an illustrative modality of a flow meter in the opening configured to implement ultrasonic flow measurement according to the principles disclosed here;
    [0015] Figure 6 shows a schematic top view in cross section of another illustrative modality of a flow meter in the opening configured to implement ultrasonic flow measurement according to the principles disclosed here; and
    [0016] Figure 7 shows a schematic top cross-sectional view of an illustrative modality of a meter in the opening configured to implement optical flow measurement according to the principles disclosed here. DETAILED DESCRIPTION
    [0017] The following discussion is directed to several exemplary modalities of the invention. These modalities are exemplary only and should not be interpreted, or used in any other way, as limiting the scope of the disclosure, including claims. In addition, someone versed in the technique will understand that the description below has a wide application, and the discussion of any modality should be only exemplary of this modality, and not intended to imply that the scope of the disclosure, including the claims, is limited to this. modality.
    [0018] As used here, the word "approximately" means "more or less 10%".
    [0019] Certain terms are used throughout the description and claims below to refer to particular characteristics or components. The figures in the drawings are not necessarily on the scale. Certain features and components here may be exaggerated in scale or in some schematic form, and some details of conventional elements may not be shown for the sake of clarity and conciseness.
    [0020] In the following discussion and in the claims, the terms "including" and "comprising" are used openly, and thus must be interpreted as "including, among others ...". Also, the term "coupled" or "coupled" must mean either an indirect or direct connection. Thus, if a first device couples a second device, this connection must be through a direct connection or through an indirect connection made by other devices, components and connections. In addition, as used herein, the terms "axially" and "axially" generally mean together or in parallel with a given axis (for example central axis of a body or an orifice), while the terms "radial" and "radially" generally mean perpendicular to the given axis. For example, an axial distance refers to a distance measured along or parallel to a given axis, and a radial distance means a distance measured perpendicular to the given axis.
    [0021] An opening gauge comprises an adaptation in the opening equipped with pressure sensors located on both sides of an opening plate to measure the flow of a fluid that passes through a section of piping. Aperture gauges are currently used in various sections of piping worldwide, especially at custody transfer points between different parts. To use new techniques to measure the flow of a fluid in one of the many sections of piping that currently employ gauges at the opening, one must remove the gauge at the opening and install a new gauge fitting. However, removing the socket from the opening and installing the replacement socket using the latest technology can be unduly expensive both in terms of equipment and the labor associated with this work.
    [0022] Modalities of the present disclosure provide a method of updating existing gauges in the opening to incorporate newer technologies without incurring the high costs associated with a complete installation of a new measurement system. The modalities described here provide a method of adapting a meter in the opening adapted to allow the implementation of more advanced measurement techniques such as ultrasonic and optical measurement.
    [0023] Now, with reference to Figures 1 and 2, a side and frontal cross-sectional view of a flow meter in opening 10 are shown, respectively. The flowmeter at opening 10 generally comprises a body 12, a central longitudinal axis 13, a central flow hole 14 that is aligned concentric with the axis 13 and has an inner wall 120, a plate housing with opening 20, a plate conveyor with opening 21, an opening plate 16 supported by a conveyor 21, and a plurality of threaded holes 18 with a plurality of pressure sensors 17 installed therein. Flowmeter 10 also includes a flange 11 for the coupling body 12 to an existing pipe section (not shown) such that that central flow hole 14 is aligned with the central hole of the pipe section (not shown). The plate in the opening 16 has a central opening 19 which is positioned inside the central luxury hole 14 of the body 12 as that opening 19 is generally concentric around the axis 13. The size of the opening 19 is preferably smaller than the inner diameter the central flow hole 14. The slot housing in opening 20 houses and holds the plate in opening 16 inside the body 12 by the conveyor 21 and includes a seal 22 that restricts the flow around the outer edges of plate 16. In the embodiment shown , seal 22 comprises an elastomeric material. In other embodiments, the seal 22 can be made without metal. In addition, while the meter at opening 10 is shown and described as being a single fitting at the opening of the chamber, it should be understood that other types of fittings in the opening can be used, such as, for example, double fittings in the opening of the chamber, while still complying with the principles disclosed here.
    [0024] During operation, a fluid, either in a gaseous or liquid state, seeps down into a central flow hole 14 and is forced through opening 19 in plate 16. Due to the principles of continuity and energy conservation, the speed of the fluid increases as the current moves through the opening 19. This increase in speed also raises a pressure differential in the fluid that passed through the opening 19. Pressure sensors 17 installed in the screw holes 18 take pressure readings on the downstream sides and upstream of the plate with opening 16 and a separate flow computing system (not shown) then calculates the volumetric flow based on the measured pressure gradient.
    [0025] Referring now to Figure 3, a cross-sectional view of an ultrasonic flow meter 300 is shown. As with the flow meter of opening 10 shown in Figures 1 and 2, the ultrasonic flow meter 300 includes a body 302 and a central flow hole 304 through which the measured fluid passes. Ultrasonic transducers 312, 314 generate and receive acoustic signals 320 generally having frequencies above 20 kilohertz. The acoustic signals can be generated and received by a piezoelectric element in each transducer 312, 314. To generate an ultrasonic signal, the piezoelectric element is electrically stimulated by means of a signal (for example a sinusoidal signal), and the element responds through the vibration. The vibration of the piezoelectric element generates the acoustic signal that passes through the measured fluid to the corresponding transducer set in the pair. Similarly, when hit by an acoustic signal, the receiving piezoelectric element vibrates and generates an electrical signal (for example a sinusoidal signal) that is detected, digitized and analyzed by a flow computing system (not shown) associated with the flow meter 300 .
    [0026] A path 350, also referred to as "string", exists between sets of illustrative transducers 312 and 314 at an angle θ to a central axis 313. The length of string 350 is the distance between the face of transducer set 312 and the face of the transducer assembly 314. Points 308 and 306 define the locations where the acoustic signals (for example, signal 320) generated by transducer assemblies 312 and 314 enter and exit the fluid flow through the body 302, respectively ( that is, the entrance of the central flow hole 304). The position of transducer sets 312 and 314 can be defined by angle θ, by a first length L measured between the faces of transducer sets 312 and 314, a second length X that corresponds to the axial distance between points 308 and 306, and a third length D that corresponds to the diameter of the central flow hole 304. In most cases, the distances D, X and L are precisely determined during the manufacture of the flow meter. A measured fluid, such as a gas or liquid, flows in a direction 312 with a speed profile 310. Speed vectors 322, 324, 326 and 328 illustrate that the speed of the fluid in the body 302 increases towards the central axis 313 of the body 302.
    [0027] Initially, sets of transducers upstream 312 generate an ultrasonic signal that is incident on, and therefore, detected by, downstream of transducer set 314. Sometime later, the downstream transducer set 314 generates an ultrasonic signal of return that is subsequently incident on and detected by the upstream transducer set 312. Thus, the transducer sets exchange or play “throw and catch” with ultrasonic signals 320 along the 350 chordal path. During operation, this sequence can occur thousands of times per minute.
    [0028] The time of passage of an ultrasonic signal 320 between the sets of illustrative transducers 312 and 314 depends in part if the ultrasonic signal 320 is passing downstream or upstream in relation to the fluid flow. The passage time for an ultrasonic signal that passes upstream (that is, in the same direction as the fluid flow) is less than its passage time when passing downstream (that is, against the flow of fluid). Downstream and upstream passage times can be used to calculate the average speed along the signal path, and the speed of sound in the measured fluid. Given the transverse measurements of the flow meter 300 that carry the fluid, the average velocity over the area of the central hole 304 can be used to find the volume of the flow of fluid that passes through the body 302.
    [0029] Other modalities of an ultrasonic flowmeter measure the Doppler effect to determine the speed of the flow of fluid in the central flow hole 304. In such ultrasonic meters, an ultrasonic transmission transducer generates an ultrasonic signal having a known frequency spectrum. The ultrasonic signal passes through the flow of fluid in the meter to an ultrasonic receiving transducer. The frequency spectrum of the ultrasonic signal is altered by the fluid flow through which the signal passes. The ultrasonic signal can pass directly between the transducers or be reflected off the wall of the meter hole. The frequency spectrum of the received ultrasonic signal is analyzed by an affixed flow computing system, and the speed of the flow of fluid that passes through the central flow hole 304 is determined based on the exchange in the frequency spectrum of the relative received ultrasonic signal. the frequency spectrum of the transmitted ultrasonic signal. In some of these ultrasonic meters, the flow rate is determined based on the Doppler effect measured both upstream and downstream that passes ultrasonic signals.
    [0030] Flow meter modalities disclosed here include a fitting body in the opening and apply ultrasonic or optical techniques to measure the flow of fluid. Referring now to Figure 4, a flow diagram for a method 400 for adapting a meter at the aperture to use ultrasonic or optical measurement techniques is shown. Although sequentially represented as a matter of convenience, at least some of the operations shown can be performed in a different order and / or performed in parallel. Additionally, some modalities can perform only some of the operations shown. Method 400 operations can be performed without removing the meter body at the pipeline opening or other flow measurement environment in which the meter at the opening is installed.
    [0031] Accordingly, in block 402, a meter at the opening is provided. The gauge at the opening may be arranged to measure fluid flow in some embodiments. To convert the meter in the opening to ultrasonic or optical technology, in block 404, the opening plate is removed from the opening adaptation body. In block 406, the gauge pressure sensors at the opening and associated measurement systems are decoupled from the gauge body at the opening by removing the sensors and / or pressure sensors from the threaded holes. In block 408, in place of the pressure sensors, ultrasonic or optical transducers are installed in the threaded holes, appropriate transducer control and signal measurement systems are coupled to the transducers external to the meter body at the opening. Control and signal measurement systems can cause transducers to generate signals that propagate through the fluid stream passing through the meter body at the opening and can determine the speed and / or volume of the fluid stream based on the signals received by the transducers in block 410.
    [0032] Referring now to Figure 5, a cross-sectional top view of an illustrative embodiment of a meter in aperture 100 configured to implement ultrasonic flow measurement is shown. The flow meter 100 comprises a meter body in the opening 12 which further comprises a central flow bore 14 and an inner wall 120 as shown in Figures 1 and 2; however, the opening plate 16 and pressure sensors 17 have been removed. Instead, a pair of ultrasonic transducers 105 has been installed inside the threaded holes 18. All remaining threaded holes 18 in which no ultrasonic transducer 105 has been installed can be plugged in as no fluid can leak from said threaded holes 18 during the operation.
    [0033] In the embodiment shown in Figure 5, ultrasonic transducers 105 have been placed on opposite sides of the meter body 12. Transducers 105 may include inclined faces 103 which are positioned such that faces 103 are parallel to one, generally aligned with each other the others. In addition, each of the ultrasonic transducers 105 is configured to generate and receive an acoustic signal that is directed through the central flow hole 14 of the body 12. Also, as shown schematically in figure 5, ultrasonic transducers 105 are also coupled to a system flow computing 130 through cables 107. During operation, ultrasonic transducers exchange ultrasonic signals 109. Signals 109 are relayed to flow computing system 130 through cables 107 and the fluid flow rate is calculated based on the passage time ultrasonic signals. In some embodiments of the flow meter shown in Figure 5, the flow velocity and flow of a fluid passing through the central flow hole 14 can be determined based on the Doppler effect of the transmitted ultrasonic signals. Also, it should be noted that other modalities can calculate the flow rate of the fluid using different principles while still complying with the basic principles of the current disclosure.
    [0034] Referring now to Figure 6, a cross-sectional top view of an illustrative embodiment of a meter in aperture 200 configured to implement ultrasonic flow measurement is shown. The flow meter 200 comprises a meter body in the opening 12 which further comprises a central flow bore 14 and an inner wall 120 as shown in Figures 1 and 2; however, the plate with opening 16 and pressure sensors 17 have been removed. Instead, a pair of ultrasonic transducers 115 has been installed inside the screw holes 18. All the remaining screw holes 18 in which no ultrasonic transducer 115 has been installed can be plugged in such a way that no fluid can leak from said screw holes 18 during the operation.
    [0035] In the modality shown in Figure 6, ultrasonic transducers 115 are positioned on the same side of the meter body in opening 12 and are each configured to generate and receive an ultrasonic acoustic signal 119 which is directed through the flow of a fluid which passes through a central flow hole 14 and is reflected off the inner wall 120 of the central flow hole 14. Also, as is schematically shown in Figure 6, ultrasonic transducers 115 are also coupled to a flow computing system 131 via cables 117. During operation, ultrasonic transducers 115 exchange ultrasonic signals 119 which are reflected off the inner wall 120. Signals 119 are relayed to the flow computing system 131 via cables 117, and the fluid flow is computed based on the ultrasonic signals 119. In some embodiments, the speed of fluid flow, volume, etc. can be determined based on the Doppler effect on the reflected ultrasonic signals 119. In some flow meter modalities shown in Figure 4, the flow velocity and flow rate of a fluid passing through a central fluid bore 14 can be determined based on in the passage times of ultrasonic signals. Additionally, in some embodiments, only a single ultrasonic transducer is installed in one of the plurality of threaded holes 18 such that an ultrasonic signal is generated by the single transducer, reflected outside the inner wall of the meter body, and received by the same transducer. Also, it should be noted that other modalities can calculate the fluid using different known techniques while still complying with the basic principles described here.
    [0036] Referring now to Figure 7, a cross-sectional top view of an illustrative embodiment of a bore meter 400 configured to implement optical flow measurement is shown. The flow meter 400 comprises a meter body at opening 12 which further comprises a central flow bore 14 and an inner wall 120 as shown in Figures 1 and 2; however, the plate with orifice 16 and pressure sensors 17 have been removed. Instead, an optical beam generator 125 (for example, a laser diode and associated optics) and an optical sensor 127 have been installed in the screw holes 18. The remaining screw holes 18 in which neither an optical beam generator 125 or an optical sensor 127 has been installed can be plugged in such a way that no fluid can leak through said thread holes 18 during operation.
    [0037] In the mode shown in Figure 7, the optical beam generator 125 and optical sensor 127 are positioned on opposite sides of the meter body at opening 12 and are positioned such that they are aligned. Also, as is shown schematically in Figure 7, the optical beam generator 125 and optical sensor 127 are also coupled to a flow computing system 132 via cables 129. In the modality shown, at least two light beams 135 are generated by the optical beam generator 125. These light beams 135 are directed through the central flow hole 14 and are received by optical sensor 127. Optical sensor 127 detects the light reflected by particles carried in the fluid into which the beams 135 pass. The difference in the direction of the particles in each beam is indicative of the speed of the fluid that passes through the central flow hole 14. The signals from the optical generator 125 and optical sensor 127 are directed to the flow computing system 132 through the cables 129 in which the velocity of fluid flow through the central flow hole 14 is calculated based on the difference in the particle detection time in relation to the different light beams. However, it should be noted that other modalities can calculate the flow based on different known techniques while they are still in accordance with the principles disclosed here.
    [0038] While the modalities disclosed are described here with reference to the particular implementations, this discussion is only exemplary, and it must be understood that these modalities are merely illustrative and that the scope of the subject in question claimed here is not limited to them. Numerous variations and modifications will become apparent to those skilled in the art once the above disclosure is fully appreciated. The following claims are intended to be interpreted to cover all of these variations and modifications.
    权利要求:
    Claims (18)
    [0001]
    1. Flow meter comprising: an opening fitting body (12) comprising a housing, a hole (14) for passing a fluid stream, and a plurality of threaded holes (18), in which the housing is configured to accommodate a plate with opening (16) in one position; characterized by the fact that it comprises: a first ultrasonic transducer (105) arranged in a first of the plurality of threaded holes (18) on one side upstream of the position; and a second ultrasonic transducer (105) disposed in a second of the plurality of threaded holes (18) on one side downstream of the position; wherein the first ultrasonic transducer (105) and the second ultrasonic transducer (105) are each configured to generate and receive an acoustic signal.
    [0002]
    2. Flow meter, according to claim 1, characterized by the fact that the first ultrasonic transducer (105) is configured to direct an acoustic signal through the hole (14).
    [0003]
    3. Flow meter, according to claim 1, characterized by the fact that the first ultrasonic transducer (105) receives an acoustic signal that is reflected outside an internal hole wall (14).
    [0004]
    4. Flow meter, according to claim 1, characterized by the fact that the acoustic signal generated by the first ultrasonic transducer (105) is at a frequency equal to or greater than 20 KHz.
    [0005]
    5. Flow meter according to claim 1, characterized by the fact that the first transducer (105) and the second transducer (105) include angled faces, and in which the angled faces of the first transducer (105) and the second transducer ( 105) are approximately parallel.
    [0006]
    6. Flowmeter according to claim 1, characterized by the fact that it comprises a flow computing system (103) that is coupled to the first transducer (105) and the second transducer (105).
    [0007]
    7. Flow meter according to claim 6, characterized by the fact that the flow computing system (103) is configured to receive a signal from at least one of the first transducer (105) and the second transducer (105) and compute the flow of a fluid passing through the hole (14).
    [0008]
    8. Flow meter, according to claim 6, characterized by the fact that the flow computation system (103) is configured to compute the fluid flow based on the Doppler effect of the acoustic signal received by at least one of the first transducer (105) and the second transducer (105).
    [0009]
    9. Flow meter according to claim 6, characterized by the fact that the flow computing system (103) is configured to compute the flow of the fluid based on an acoustic signal that is reflected out of the inner wall of the hole ( 14).
    [0010]
    10. Flow meter according to claim 1, characterized in that the first of the plurality of threaded holes (18) is positioned on one side of the housing and at least one second of the plurality of threaded holes (18) is positioned on the opposite side of the housing.
    [0011]
    11. Flow meter comprising an opening fitting body (12) comprising a housing, a hole (14) for passing a fluid stream, and a plurality of thread holes (18), characterized by the fact that it comprises: a first transducer ultrasonic (105) arranged in a first of the plurality of threaded holes (18); and a second ultrasonic transducer (105) disposed in a second plurality of threaded holes (18); wherein the housing is configured to accommodate an opening plate (16); wherein the opening plate (16) is not installed inside the housing; and where the first and second ultrasonic transducers (105) are each configured to generate and receive an acoustic signal.
    [0012]
    12. Flow meter according to claim 11, characterized by the fact that it comprises a flow computing system (103) that is coupled to the first transducer (105) and the second transducer (105), in which the flow computing system flow (103) is configured to receive a signal from at least one of the first transducer (105) and the second transducer (105) and compute the flow rate of a fluid passing through the bore (14).
    [0013]
    13. Flowmeter according to claim 12, characterized by the fact that the flow computation system (103) is configured to compute the fluid flow based on the Doppler effect of the acoustic signal received by at least one of the first transducer (105) and the second transducer (105).
    [0014]
    14. Method for adapting an aperture meter comprising: providing an opening fitting body (12) having a hole (14), an opening plate (16), a plurality of threaded holes (18), and a plurality pressure sensors (17) installed in the plurality of threaded holes (18); removing the opening plate (16) and the plurality of pressure sensors (17) from the opening fitting body (12); characterized by the fact that it comprises: installing a plurality of transducers (105) in the plurality of threaded holes (18); wherein at least one of the plurality of transducers (105) is configured to generate a signal and at least one of the plurality of transducers (105) is configured to receive the signal; and measuring the flow rate of a fluid flow passing through the bore (14) based on an outlet from each of the plurality of transducers (105).
    [0015]
    15. Method according to claim 14, characterized in that installing a plurality of transducers (105) comprises installing a plurality of ultrasonic transducers (105) which are configured to send and receive acoustic signals.
    [0016]
    16. Method, according to claim 14, characterized by the fact that measuring a flow rate of a fluid flow that passes through the bore comprises using a flow computation system (103) that is coupled to at least one of the plurality of transducers (105).
    [0017]
    17. Method, according to claim 16, characterized by the fact that measuring the flow rate of a fluid flow that passes through the bore comprises computing the flow rate through the use of the flow computing system (103) to receive a signal from at least one of the plurality of transducers (105).
    [0018]
    18. Method, according to claim 17, characterized by the fact that measuring the flow rate of a fluid flow that passes through the hole comprises computing the flow rate based on the Doppler effect of the signals received from the plurality of transducers (105) .
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    US9366556B2|2016-06-14|
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    US8960017B2|2015-02-24|
    IN2015DN04205A|2015-10-16|
    CN103808379A|2014-05-21|
    US20140130606A1|2014-05-15|
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    法律状态:
    2018-11-21| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-03-24| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-07-28| B09A| Decision: intention to grant|
    2020-12-15| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 11/11/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    2021-04-06| B09W| Decision of grant: rectification|Free format text: RETIFIQUE-SE, POR INCORRECOES NAS FIGURAS. |
    2021-04-13| B16C| Correction of notification of the grant|Free format text: REF. RPI 2606 DE 15/12/2020 QUANTO AOS DESENHOS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US13/676,287|US8960017B2|2012-11-14|2012-11-14|System and method for ultrasonic metering using an orifice meter fitting|
    US13/676,287|2012-11-14|
    PCT/US2013/069389|WO2014078224A1|2012-11-14|2013-11-11|System and method for ultrasonic metering using an orifice meter fitting|
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