专利摘要:
Described herein is an autonomous fluid spill containment device for a pipeline which has a carrier conduit for transporting a fluid and a containment conduit located around the carrier conduit to define an interstitial space for receiving fluid spilled from the carrier conduit. The device includes a spilled fluid barrier for stopping spilled fluid flow. The fluid barrier is located in the interstitial space and extending between the carrier conduit and the containment conduit. A cable sensor is associated with the containment conduit for detecting spilled fluid flowing in the containment conduit.
公开号:ES2565076A2
申请号:ES201590132
申请日:2014-04-30
公开日:2016-03-31
发明作者:Harold Russell Baird;Jeffrey Scott Adler
申请人:Harold Russell Baird;Jeffrey Scott Adler;
IPC主号:
专利说明:

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Leakage is limited to the distance between the field joints, and small leaks are unlikely to be detected, as they do not adequately affect the temperature of the pipe. There is no teaching of containment leaks.
5 Therefore, there is a need for an improved pipe that addresses the problems mentioned. Short description
10 We have designed a fluid spill containment device and system for pipes that transport energy sources that significantly reduce the probability and magnitude of pipe releases as a result of its total integrity and safety management program through containment in a double-walled tube, instrumentation to detect a release and its exact location, as well as a network of
15 real-time report to yield specific repair responses. The device and the system are mainly based on the use of cable sensors that in specific combination with the double-walled tube, which houses an annular bulkhead and a spill door option, which advantageously serves as a superior detection and containment device far away that could allow a pipeline operator to activate the transport of
20 hydrocarbon in a safer environment. While the device and the system may be more expensive to operate than a single wall pipe, its autonomous self-monitoring / detection, containment and reporting system significantly reduces losses of valuable products and damage from spills to the environment and the associated costs, reduces maintenance costs over the lifetime, facilitates the approval of
25 construction, and improves goodwill in the community. Advantageously, the device and the system is optimizable in the conventional tube designs currently used in the pipe industry so that adaptations are made to these pipes to allow them to serve as the main transport tube for the transported energy source.
Accordingly, in one aspect an autonomous fluid spill containment device is provided by a pipe having a transport conduit for the transport of a fluid and a containment conduit located around the transport conduit for
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Figure 3 is a longitudinal cross-sectional view of the pipe section showing the spill containment device and cable sensors that pass through an annular bulkhead;
5 Figure 4 is a longitudinal cross-sectional view of a pipe section showing a spill containment device and cable sensors external to the containment device leading to a network monitor (shown in Figure 5);
Figure 5 is a diagrammatic representation of a network monitoring station;
10 Figure 6 is a diagrammatic representation of a response and report system of the sensor network.
Figure 7 is a process flow for the detection of a fluid loss using a time domain reflectometer technique.
Other device data and its advantages will be apparent from the detailed description included below. 20 Detailed Description
As used herein, the term "fluid" is intended to mean gas, natural gas; liquid, including chemicals, (synthetic, organic and inorganic including natural food liquids), crude oil, petroleum, butyndinous sand oil, and
25 water, liquefied gas, such as propane, butane, liquefied natural gas and the like.
Referring to Figures 1 and 2, it is generally illustrated in (10) a fluid spill containment device. In general terms, the device (10) comprises a double-walled pipe that includes an internal transport conduit (tube) (12) and an external containment conduit (tube) (14) that covers the transport tube (12) , and defining an interstitial space (16) around the transport tube (12). Transport tube
(12) transports the fluid along it. The interstitial space (16) receives the fluid that
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It spills from the transport tube (12) in case the transport tube (12) is broken or structurally compromised. A plurality of spacers (18) are arranged substantially along the entire length of the pipe and maintain the separation between the pipes (12), (14). A spilled fluid barrier (20) is located between the transport tube (12) and the containment tube (14) and stops the flow of fluid that spills into the interstitial space (16) of a greater downward flow. The spilled fluid barrier (20) is an annular bulkhead (22) that is welded to the transport tube (12) and sealed to the containment tube (14) to define separate release containment sections (24) along The pipe. A spilled fluid sensor (26), (74) is located in the interstitial space
(16)  to detect spilled fluid in the containment tube (14). Typically, the spilled fluid sensor (26), (74) is located in a lower portion of the containment tube (14). In the example shown, the spilled fluid sensor (26), (74) runs along the bottom of the containment tube from the descending and ascending directions until leaving the fluid barrier seals of the containment tube (30) to be terminated in a network monitor station.
Referring still to Figures 1 and 2, a spill return door assembly
(60) it is located ascending the spilled fluid barrier (20). The spill return door assembly (60) includes a spill return door (62) resiliently connected to the transport tube (12) and is installed against an inner portion (64) of the adjacent transport tube (12) to a spill opening (66). The spill return door (62) is hinged to a pivoting arm (63) at the rising end and connected to the door spring (70). The spill door (62) is contoured to the shape of the transport tube (12) to limit the obstruction to the normal flow of the material and the passage of devices such as ingots. The spill door (62) is sealed (insta) against a clamping flange to prevent the flow of material from the transport pipe to the containment tube. In case of a release of ascending material from the transport tube, the fluid will flow into the containment tube (14), and then back to the transport tube (12) through the spill door (62), and will be detected by the cable sensors (26), (74).
Referring now to Figure 3, spilled fluid sensors (26), (74) are shown passing there along the seals of the spilled fluid barrier (30) as


to extend the detection of spilled fluid along a plurality of interstitial spaces (16) depending on the length capacity of the spilled fluid sensors (26), (74).
5 Referring now to Figure 3, spilled fluid sensors (26), (74) are shown passing there along the seals of the spilled fluid barrier (30) as to extend the detection of spilled fluid to along a plurality of interstitial spaces (16) depending on the length capacity of the spilled fluid sensors (26), (74).
10 Referring still to Figures 1, 2 and 3 this mode of the fluid spill containment device is suitable for all installation locations, by way of example but not limited to, above ground, below ground, below of water, in permafrost, and under covers such as airstrips, railways and
15 roads
Referring now to Figure 4, an alternative mode is illustrated by which the cable sensors (26), (74) are located outside the containment tube. In this mode, the detection of, by way of example, the temperature of the spill, the voltage and the
20 acoustics can be achieved at a lower maintenance and construction cost. This mode of fluid spill containment device is suitable for installation locations, by way of example but not limited to, above ground, below ground and in permafrost.
Even with reference to Figures 1, 2, 3 and 4, the device (10) is easily mounted to join a conventional single wall tube. This can be done in circumstances where the pipeline operator needs the device (10) to join an existing line that now crosses or to cross some ecologically sensitive areas. The size of the transport tube (12) must be equal to the single wall tube. The transport tube (12) is
30 welds to the single wall tube and an annular transition bushing is welded to the end of the containment tube (14) to ensure inviolability of the containment tube (14) and a completely hermetic containment.
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Release Report and Location
To achieve these results, the system implements a sensor network that uses three types of messages to achieve functionality. Additional message types may also be used for network administration, but they are typical practice and will not be described here.
1. Equipment Security Status. The sensor outputs are checked for shorted or broken connections and electronic faults of the internal sensor. Network monitor station
10 also checks the security status of the internal equipment. The safety status report messages of the equipment including the location of the sensor station are sent to the operator station in the response and analysis center.
2. Sensor data. The sensor outputs are displayed periodically. Messages from
The sensor data including the location of the release detections are sent to the operator station at the response and analysis center.
3. Network Status. The network monitor accumulates reports of any failure to receive an expected message or message fragment and report this status to the operator station
20 or on-site staff when required. Each network monitor has a unique identifier and a known location.
The operator station processes the incoming messages by examining the release indications by applying, for example, trend and variance algorithms to the sensor data
25 suitable for transported material. The results are archived for future reference. The station displays the results to the operator and activates visual and auditory alarms and the related location for the detected release cases.
Features of Transported Fluid Release
30 To effectively detect the releases of transported material, the system is designed to monitor the characteristics of the three types of releases - breakage, leakage


and leaks. It should be noted that for a single wall tube, the release is an involuntary loss of material transported around the pipe. For a dual wall system, the release includes loss of the internal transport tube to the external containment tube and the ingestion of the surroundings in the containment tube. The characteristics
5 hallmarks of the three types of releases are:
Breaking -A release or ingestion of high mass velocity caused by catastrophic failure of the pipe. It typically occurs suddenly and can be caused by external forces such as bulldozer, earthmoving, sabotage, or other similar events or the
10 rapid progression of a structural failure of the pipe.
Leakage - A release of low speed (but still can be substantial) through a hole in the tube smaller than the diameter of the tube and that does not progress significantly in size for a short time. A leak may suddenly occur from a puncture of
15 backhoe, pillage or other similar events or progress slowly through use and environmental events such as corrosion, thermal stress, or abrasion by the transported material.
Filtration - A very low release speed through a small hole or crack,
20 normally caused by events such as corrosion, welding defects or joint failure. Filtration can be intermittent, for example, if a material of higher viscosity clogs the opening after a previous release of material of lower viscosity, or a displacement of soil or temperature change that closes a crack. 25 Device Release Detection
The release detection is based on the use of cable sensors located along the length of the containment tube that monitors characteristics such as acoustics, temperature and tension. Sensor readings that indicate a spill condition are
30 transmit in real time to a user's report station for analysis and action.
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权利要求:
Claims (1)
[1]
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US13/987,153|US9777872B2|2013-07-05|2013-07-05|Fluid spill containment, location, and real time notification device with cable based sensor|
US13/987153|2013-07-05|
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