• 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:
    A method of and apparatus for making up two members having mating threaded connections, such as pipe joints or bolts, for insuring that a specified number of threads have been engaged and a specific torque has been applied. The mating threaded connections are threadably engaged while measurements are made of the torque required to turn one of the members relative to the other, and measurements are made of the number of turns of the members relative to each other. In order to insure that a bad joint is not made up, the measurements of torque and turns must remain within specified parameters or the threaded interconnection is discontinued. The method and apparatus further includes avoiding erroneous turn measurements that may occur such as due to bending or swaying of one of the members during makeup.
    公开号:SU1050554A3
    申请号:SU782607700
    申请日:1978-04-25
    公开日:1983-10-23
    发明作者:Дуглас Вейнер Питер；В.Калхаун Чарльз；Линн Ми Гэри；А.Коллинз Джерри
    申请人:Ветерфорд/Лэмб,Инк (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to mechanical engineering and others, where they assemble two elbows of the 1st cum (cx conjugate threaded connections, for example, such as pipes, bolts, etc., with a precisely defined number of threads and a specific torque. a threaded joint, two elements in which a torque is transmitted to one of the elements and control the magnitude of this moment I. A device is known for implementing this method, comprising means for imparting rotation to a single, threaded element from another means for measuring the magnitude of the torque I. A disadvantage of the known method and device implementing this method is the impossibility of obtaining a reliable threaded connection with a special thread, since monitoring only the magnitude of the torque. HQ ensures that that in connection there is a sufficient number of threads, and in the case of a thread defect, when the torque reaches certain SH data, information about it can be mistakenly perceived as information about the end of the process with ety threaded elements compound, leading to poor reception, the threaded Neny soybeans. The purpose of the invention is to increase the reliability and quality of the process of assembling a threaded joint. The goal is achieved in that according to the way in which the torque load is transmitted to one of the elements of the threaded joint and the magnitude of this moment is controlled, the following are determined: the maximum and minimum torque for the threaded joint and the reference torque. At which one starts counting the number of revolutions of one element relative to another in order to realize their threaded connection, and the elements are separated if the measured torque is greater than the value., Mo) min. or less, Go) where N is the number of revolutions of one element of a threaded connection relative to another element; min. specified minimum number of turns of a threaded joint — specified maximum number of turns of a threaded connecting; specified maximum torque; set minimum torque; reference torque. . Moreover, in the implementation of the method, the computations stop counting the number of revolutions if the measured torque is less than the reference torque, and resume counting the number of revolutions when the measure torque becomes equal to the reference torque. The device for carrying out the method, containing means for communicating rotation to one threaded element relative to another and means for measuring the torque, is provided with means for counting the number of revolutions of one element relative to another and a processor performing the conversion of information about the number of revolutions. FIG. Figure 1 shows schematically a device for assembling a threaded joint; in fig. 2 is a graph illustrating the relationship between torque and speed when assembling a threaded joint. Although the invention is applicable to assembling various threaded connections, for illustration purposes, it is described in connection with connecting one length of pipe to another with a coupling. A device for assembling threaded joints contains power clamps 1, rotating elements 2 of the clamping device for gripping and rotating pipe 3. The lower end of pipe 3 is screwed into the coupling 4 of the connection to which the upper end of the second pipe 5 is also threaded. & connected to a rotating clamping element 2 by means of a driving mechanism (shown). A power line 7, fitted with a valve 8, is connected to a hydromotor b in order to supply energy thereto. The valve 8 actuates the relay 9. To measure the torque generated by the rotating element 2 of the clamping device on the pipe 3, any suitable device can be used. For example, an electric strain gauge can be introduced into auxiliary line 10 connected to power grips 1, which will provide an electrical signal indicating the presence of a torque generated} by the rotating member 2 of the clamping device, since this torque is proportional to the mechanical voltage of the auxiliary line 10. The device has means designed to measure the magnitude of the torque transmitted by the rotating element of the jig, and from it the tube 3. For example, in The clamping member 2 can be provided with a series of tides or protrusions 11, which in turn can interact with the switch 12 so that the protrusions 11 successively engage the lever 13 of the switch 12 in order to momentarily close the switch 12 when the rotating the clamping device element 2 is driven by a hydraulic motor 6. As a result, series of pulses or readings are transmitted over the wire 14. Therefore, by counting the number of closures of the switch 12, it is possible to calculate the number of revolutions of the pipe 3 relative to the coupling 4. Usually the tides 11 actuate the switch 12 ten times per revolution of the pipe 3. If the coupling 4 is already rigidly screwed to the pipe 5, to pay attention only to the liquid-tight enough joint between the pipe 3 and the sleeve 4, However, if the coupling 4 is just loosely mounted on the pipe.5, the power arms 1 provide for the assembly of two ends, i.e. The clamps 1 collect some thread between the pipe 3 and the coupling 4, as well as between the coupling 4 and pipe 5. In the case of assembling pipes 3 and 5 on both sides of the coupling 4, it is also necessary to measure the speed of the coupling. For example, both fasten the friction clutch Wheel 15 and clutch 4 on the outer surface of the clutch 4, so that the rotation of this clutch causes the rotation of the wheel 15 and the connecting wheel 16 mounted on a common shaft with a wheel 15. on the wheel 16 Drives or protrusions 17 so that they engage the lever 18 of the second switch 19. The switch 19 provides a series of pulses or counts in the wire 20 in order to provide I the indication of the number of revolutions of the coupling 4. The output signal from the strain gauge 21 that measures the cool giver applied to the pipe 3 by means of wires 22 and 23, transmits to converter 24 (voltage converter), and then is transmitted to subsystem 25 and microprocessor 26, which contains the persistent storage device 27 and pockets of . shborkoy. The number of revolutions of the upper pipe 3 is transmitted to the microprocessor 26 via the wire 14, and the value of the number of revolutions of the lower part of the coupling 4 is transmitted to the microprocessor 26 via the wire 20. Returning the system to its original position before connecting each pair of threaded elements is provided by reset switch 29. On the control panel 30 of the preset, different values are set depending on the type of joint assembled, such as a certain size, size, weight, class and type of connection of pipes. The switches in the form of gears 31-33 prednaz-. Started for ustshovki values of low, minimum and maximum speed, respectively. The switches in the form of gears 34-36 are intended to introduce into the system information about the values of maximum, minimum and reference torques. To set the operating mode of the system, there are various manually operated switches, such as the automatic speed adjustment switch 37, the automatic control to manual control switch 38 and the single control switch 39 from dual assembly. To provide the operator with instant information on the number of revolutions and the applied torque during assembly, there are various indicator devices 40. Indicator device 40 provides readings of pipe 3 revolutions, indicator device 41 reads clutch 4 revolutions, indicator device 42 reads information about the rotation the moment applied by grippers 1, and the indicator device 43 is a reading of the values indicating the magnitude of the maximum torque applied by the gripper mi 1 in the build process. There is a recording device 44 for which you can use a tape drawing device. This device, designed to record both the magnitude of the applied torque during rotation and the values entered into the system, thus ensures the registration of the assembly of the articulated joint. The input / output channel 45 provides communication between the processor 26 and the remote control 30 of the controller and the recording device 44. The signal lights 46 and 47 indicate that the coupling is good, or bad, and the speaker 48 and siren 49 provide an audible signal whether the device is good or bad.
    It is known that if a certain number of threads are hooked and a certain torque is applied with proper cleaning and using certain pipe fillers, the threaded joint is airtight. If the measured torque and the measured speed are within the square of 50 at the end of the assembly, the connection is usually considered good. Square 50 is limited by the nominal value of the minimum torque (straight 51), the nominal value of the maximum torque (straight 52), line 53 of the minimum number of revolutions and line 54 of the maximum number of revolutions. However, if the magnitudes of the measured torque and speed: go beyond the square 50, the threaded connection is considered a poor joint.
    When one element of a threaded joint is assembled, i.e. connect one element with another element, then one element (n-for example, pipe 3) is rotated relative to another element (for example, coupling 4). When the interacting threads of the pipes 3 and the coupling 4 begin to engage, a greater torque is required to rotate the pipe 3. When the applied torque reaches a predetermined point, it is called a reference torque (MOS) anointed by line 55. (FIG. 2), and is the starting point for the rotational speed of the pipe 3. When assembling a threaded joint, there are relationships between the applied torque and the number of hooked threads. Using the correct method, it is possible to determine the magnitude of the reference torque (line 56.), the tight sealing point, and the end of the successful assembly, located in the square 50 of good articulation. The ratio between the applied torque and the number of revolutions was not taken into account until the final assembly point was reached, and at this stage a good joint or a bad one was determined. For example, the articulation was considered bad if excessive torque was reached with an insufficient number of threads that were engaged, or if an excessive number of revolutions were reported to the threaded element.
    If the assembly process goes along line 57 with the ratio shown between KRUTJ iUHM torque and revolutions, this indicates an ideal type of assembly and good articulation.
    It is desirable to determine any expected type of damage rather than to prevent additional damage to the coupling 4 or pipe 3 or 5. For example, if the coupling 4 contains a defective thread, a continuous application of torque can cause damage to the joint thread. Another disadvantage of the continuous application of torque is that excessive thread damage makes it very difficult and time consuming to separate the defective elements, resulting in a loss of time.
    Using the proposed method and device for its implementation, the counting of revolutions is compared with the applied measured torque from the moment of the occurrence of the reference torque 55; while the cut-off, during the continuous assembly of the threaded joint, must be within certain well-defined parameters, or the assembly is disconnected.
    Thus, the invention is intended to predict cases of poor articulation, not waiting for the end of the articulation assembly.
    The control portion of the assembly process parameters lies between strand 58 and 59. Low revolutions are shown by line 610. During assembly, the actual slope of the ratio between torque and the number of obOB must continuously remain within the specified limits, or it can be concluded that there is a mechanical damage or loss. chke.
    For carrying out the method of assembling the threaded connection, the specified maximum and minimum torques for the threaded connection and the reference torque are determined at which the counting of the number of turns of one element relative to another is started. For the implementation of the threaded connection, the elements are separated if the measured This moment is greater than magnitude.
    .make
    N (M IR M on), U
    ; - t Pop,
    "AI
    is less than the value of N (Mcr - Mp)
    + M
    OG t
    May
    de N is the number of revolutions of one element (for example, pipe 3) relative to another element (for example, coupling 4); specified minimum number
    perm threads of the threaded connection; given maximum number
    / max turns of the threaded joint; | iax set maximum cool M
    bridging moment;
    - set the minimum cool TsI moment; - torque.
    If the measured torque is less than the reference torque, stop the counting of the turn of speed, and resume the count of the number of revolutions, when the eHe measure of the torque becomes equal to the reference torque of the mono assembly, this information is not received in the processor 26, processed and issued in the form of in-depth information (light bulbs 46 and 47,
    and sound speaker 48 and siren 49. Using the proposed method and device for assembling a threaded joint will allow to obtain a high-quality and reliable connection.
    various units and parts of machines.
    24
     9
    Fri
    chV
    2 /
    J
    1.0 5 / to 3.0
    facM oSopoma
    HO FIG. 2
    权利要求:
    Claims (3)
    [1]
    1. A method of assembling a threaded connection of two elements, in which a torque is transmitted to one of the dz elements and the magnitude of this moment is controlled, which is different in that, in order to increase the reliability and quality of the process. CA, determine the specified maximum and minimum torques for the threaded connection and the reference torque at which it starts counting the number of revolutions of one element relative to the other to make their threaded connection, and the elements are disconnected if the measured torque is greater than
    M / „max m 1 k” on /. and .-- η -----: ---------- + m 0P: n min or less.
    N (Μ- M x ) + n op t
    I η max 'where N is the number of revolutions of one element of a threaded connection relative to another element) n min “specified minimum number of turns of a threaded connection;
    n max ~ specified maximum number of turns of the threaded connection;
    M cr - set, maximum torque;
    min g
    Its. - set minimum torque; ,
    M O p “reference torque.
    [2]
    2. The method according to π. 1, characterized in that they stop counting the number of revolutions if the measured torque is less than the reference torque, and resume counting the number of revolutions when the measured torque becomes equal to the reference torque.
    [3]
    3. Apparatus for assembly of a threaded connection, comprising means for communicating rotation of one relative to the other threaded element, and means for measuring the torque value of t, Leach in that, to improve the reliability and quality of process hours, it is provided with means for counting the number of revolutions one element relative to another and a processor that converts information about the number of revolutions. ''
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    同族专利:
    公开号 | 公开日
    JPS53135099A|1978-11-25|
    AT357499B|1980-07-10|
    TR20466A|1981-07-01|
    BR7802563A|1978-11-14|
    AU513791B2|1981-01-08|
    JPS6124154B2|1986-06-09|
    IT1107332B|1985-11-25|
    AU3463978A|1979-10-04|
    ES469038A1|1979-09-16|
    DE2817910A1|1978-11-02|
    IT7867931D0|1978-04-24|
    NO151253B|1984-11-26|
    US4091451A|1978-05-23|
    MX145991A|1982-04-28|
    NO781316L|1978-10-27|
    GB1569092A|1980-06-11|
    IN149810B|1982-04-24|
    CA1107847A|1981-08-25|
    NO151253C|1985-03-06|
    NL7803085A|1978-10-30|
    GR60307B|1978-05-04|
    ATA296778A|1979-12-15|
    DE2817910C2|1981-11-19|
    RO80869A|1983-02-01|
    FR2388644A1|1978-11-24|
    FR2388644B1|1983-11-18|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US05/791,113|US4091451A|1977-04-26|1977-04-26|Method of and apparatus for making up a threaded connection|
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