CN216844173U - Oil and gas pipeline flange leakage monitoring and recovery device and pipeline system - Google Patents

Abstract

The utility model relates to a field quality safety control technical field of oil gas production facility, more specifically relates to a oil gas pipeline flange leakage monitoring and recovery unit and pipe-line system, wherein oil gas pipeline flange leakage monitoring and recovery unit including be used for the cover locate the flange outer and sealed recovery unit body that sets up, be used for the holding vessel body of temporary storage leakage liquid, retrieve the pipeline, be used for monitoring combustible gas's gas monitoring unit, be used for monitoring the liquid level monitoring unit of the internal liquid level of holding vessel, retrieve pipeline one end with recovery unit body intercommunication, the other end and the holding vessel body intercommunication, gas monitoring unit sets up recovery unit is originally internal, liquid level monitoring unit sets up the holding vessel is internal. The utility model provides a defeated oil and gas pipeline flange leak detection and recovery unit can carry out real-time on-line monitoring to the flange of oil gas pipeline junction, can in time discover to leak the problem and can retrieve to the oil of leaking.

Description

Oil and gas pipeline flange leakage monitoring and recovery device and pipeline system

Technical Field

The utility model relates to a field quality safety control technical field of oil gas production facility, more specifically relates to a oil and gas pipeline flange leak detection and recovery unit and pipe-line system.

Background

The oil and gas transmission pipeline is a steel pipeline for transmitting oil and natural gas from a production place to a processing center, the main media for transmitting the oil and natural gas are the oil and natural gas, and the media have the characteristics of flammability, explosiveness, toxicity and harmfulness, so the safety of the transmission pipeline is particularly important. In a high-humidity-heat and high-salinity ocean environment, chemical and electrochemical corrosion is easy to occur on a flange of a steel material of an oil and gas conveying pipeline, and oil and gas leakage is very easy to occur at the flange position of the pipeline due to the influence of the quality of a flange sealing surface, the materials of a sealing gasket and a fastening bolt and an installation process, especially for an ocean oil platform, the oil and gas conveying pipeline is always leaked at a high-altitude position on the sea surface or under the deep sea bottom, so that the ocean environment is polluted, and inflammable, explosive, toxic and harmful oil and gas easily threaten the life safety of oil and gas producers and people around the oil and gas producers; meanwhile, slight leakage or early-stage leakage is not easy to find through inspection, and especially the leakage is not easy to detect at night, so that automatic monitoring and leakage recovery at the flange leakage position of the offshore oil and gas conveying pipeline are very important, the safety of the oil and gas conveying pipeline can be ensured, the life safety and health of oil and gas production personnel and surrounding people can be ensured, the environment is protected to a great extent, and the requirement that 'green water mountain is the silver mountain of Jinshan mountain' is met; meanwhile, the flange leakage maintenance of the oil-gas pipeline far away from the land is more operable and reliable.

The prior patent discloses a leak detection device for gas transmission pipeline, the structure is more complicated, and can't carry out real-time on-line monitoring to the flange department that oil gas pipeline connects, also can't retrieve the oil of leaking when the microleakage appears in flange department, causes marine pollution easily.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a oil and gas pipeline flange leak detection and recovery unit, can carry out real-time on-line monitoring to the flange of oil and gas pipeline junction, can in time discover to leak the problem and can retrieve to the oil of leaking.

In order to solve the technical problem, the utility model discloses a technical scheme is:

the utility model provides a oil and gas pipeline flange leakage monitoring and recovery unit, including be used for the cover locate the flange outer and sealed recovery unit body that sets up, be used for the temporary storage leak liquid the holding vessel body, the recovery pipeline, be used for monitoring combustible gas's gas monitoring unit, be used for monitoring the liquid level monitoring unit of holding vessel internal liquid level height, recovery pipeline one end with recovery unit body intercommunication, the other end and holding vessel body intercommunication, gas monitoring unit sets up this is internal to the recovery unit, liquid level monitoring unit sets up the holding vessel is internal.

The utility model discloses an install the recovery unit body outside the flange at two oil gas pipeline junctions, make the recovery unit body cover in the flange outside wholly, and form sealedly, avoid oil gas to leak from the erection joint, the gas monitoring unit is used for monitoring the combustible gas in the recovery unit, the result of monitoring can be shown through the gas monitoring unit directly; the recovery device body is communicated with the storage tank body through the recovery pipeline, and when oil gas leakage occurs at the flange, the recovery device can drain the leaked oil gas to the storage tank body through the recovery pipeline, so that the pollution of the leaked oil gas to the ocean is avoided; the liquid level monitoring unit is used for monitoring the liquid level in the storage tank body and displaying a monitoring result, and an operator on duty can check the monitoring result of gas and liquid level at regular time to judge whether the oil gas leakage phenomenon exists.

Preferably, the liquid level monitoring device further comprises an alarm device for alarming, and the alarm device is in communication connection with the gas monitoring unit and the liquid level monitoring unit respectively.

Preferably, a liquid leakage port is formed in the bottom of the recovery device body, and one end of the recovery pipeline is arranged at the bottom of the liquid leakage port.

Preferably, the recovery device body comprises a first body, a second body, at least two sealing rubber strips and a fastening bolt, the first body is connected with the second body through the fastening bolt, and the at least two sealing rubber strips are respectively arranged at the inner side outline of the first body and the inner side outline of the second body.

Preferably, grooves are formed in the circumferential direction of the inner side profiles of the first body and the second body, and the sealing rubber strips are mounted in the grooves.

Preferably, the storage tank further comprises a venting pipeline, the venting pipeline is communicated with the storage tank body, and a fire retardant valve is further arranged in the venting pipeline.

Preferably, still include temperature monitoring unit and humidity monitoring unit, the temperature monitoring unit with humidity monitoring unit all sets up this internal and all with recovery unit alarm device communication connection.

Preferably, the storage tank further comprises a base, and the base is arranged at the bottom of the storage tank body.

Preferably, still include the management platform that is used for receiving the monitoring result, gaseous monitoring unit, liquid level monitoring unit, temperature monitoring unit, humidity monitoring unit all with management platform communication connection.

The utility model discloses a theory of operation is: the recovery device body is arranged on a flange in an oil-gas pipeline and is fastened on the oil-gas pipeline through a fastening bolt, if substances such as leaked oil gas and the like appear at the flange of the oil-gas pipeline, the recovery device body is sealed by a sealing rubber strip, the leaked oil gas is monitored by a gas monitoring unit, the temperature change of the leaked oil gas is detected by a temperature monitoring unit, the humidity change of the leaked oil gas is monitored by a humidity monitoring unit, and the three monitoring units alarm by an alarm device after monitoring that the oil gas leakage occurs in the oil-gas pipeline; when the leakage amount is too large, the three monitoring units not only monitor the oil gas leakage medium, but also simultaneously recover the leakage object into the storage tank body through the leakage object recovery pipeline, when the liquid level of the storage tank body reaches the alarm value of the liquid level monitoring unit, the whole oil gas production pipeline is shut down and simultaneously sound and light alarm is sent out, so that explosion and environment pollution caused by a large amount of leakage at the oil gas production pipeline are prevented, meanwhile, combustible gas in the storage tank body is timely emptied through the emptying pipeline, and the storage tank body is prevented from being deformed or exploded due to too much gas storage; in addition, install the back-fire relief valve on the blow-down pipe, prevent to cause the explosion because of thunder and lightning etc. introduces the conflagration in the holding vessel body, in a word, this oil and gas pipeline flange leakage monitoring and recovery unit wraps up the oil and gas pipeline flange at the device inboard completely, and the flange leaks will be retrieved the holding vessel body completely to cause relevant warning and production shut down, ensure on-the-spot oil gas production safety.

The novel oil gas pipeline system that still provides of this experiment, including a plurality of oil gas pipelines, a plurality of flange, a plurality of as above the oil gas pipeline flange leak detection and recovery unit, the flange sets up adjacent two oil gas pipeline junction, recovery unit body sealed cowling is located outside the flange.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) by monitoring combustible gas, temperature, humidity and the liquid level of oil in the storage tank body, the oil gas leakage condition can be timely detected;

(2) the oil gas leakage can be timely alarmed through the alarming device;

(3) the leaked oil gas is temporarily stored by utilizing the storage tank body, so that the environmental pollution of a large area is avoided.

Drawings

Fig. 1 is a cross-sectional view of a flange leakage monitoring and recovering device for an oil and gas pipeline according to the present invention;

fig. 2 is a top view of the recycling device body of the present invention;

fig. 3 is a schematic view of the usage state of the present invention.

The graphic symbols are illustrated as follows:

1. a recovery device body; 11. a first body; 12. a second body; 13. sealing rubber strips; 14. fastening a bolt; 15. a liquid leakage port; 2. a storage tank body; 3. a recovery pipeline; 41. a gas monitoring unit; 42. a liquid level monitoring unit; 43. a temperature monitoring unit; 44. a humidity monitoring unit; 5. emptying the pipeline; 6. a base; 7. a fire relief valve; 8. an oil-gas line; 9. and (4) a flange.

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better explanation of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numbers in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Example 1

As shown in fig. 1 to 3 the utility model relates to a oil and gas pipeline flange leak detection and recovery unit's first embodiment, including being used for the cover to locate flange 9 outer and sealed recovery unit body 1 that sets up, a holding vessel body 2 for temporary storage leaks liquid, the recovery pipeline 3, a gas monitoring unit 41 for monitoring combustible gas, a liquid level monitoring unit 42 for monitoring the level height in the holding vessel body 2, 3 one end of recovery pipeline and recovery unit body 1 intercommunication, the other end and holding vessel body 2 intercommunication, gas monitoring unit 41 sets up in recovery unit body 1, liquid level monitoring unit 42 sets up in holding vessel body 2.

Preferably, the recovery device body 1 and the recovery pipeline 3 are both made of stainless steel materials. As one of the embodiments, the gas monitoring unit 41 may be a combustible gas monitoring probe, which is installed in the recovery device body 1 by a screw thread and a sealing ring.

As an embodiment of the utility model, still include the alarm device who is used for reporting an emergency and asking for help or increased vigilance, alarm device respectively with gas monitoring unit 41 and liquid level monitoring unit 42 communication connection.

The alarm device sets a threshold value according to the combustible gas monitoring result of the gas monitoring unit 41 and the liquid level monitoring result of the liquid level monitoring unit 42, and when the real-time monitoring result exceeds the preset threshold value, the alarm device gives an alarm to remind an operator on duty that oil and gas leakage occurs, so that the operator on duty can take countermeasures in time, and more serious consequences are avoided.

As an embodiment of the utility model, be equipped with weeping mouth 15 bottom recovery unit body 1, the one end setting of recovery pipeline 3 is in weeping mouth 15 bottoms.

The weeping mouth 15 is arranged in will leaking and then assembles the fluid in the recovery unit body 1 from flange 9 and carries out the drainage to recovery pipeline 3, enter into holding vessel body 2 via recovery pipeline 3 again and carry out interim storage, ensure that the fluid of leaking obtains good and in time handle, avoid fluid to gather in recovery unit body 1 and cause recovery unit body 1's pressure too big then the weeping phenomenon appears, and, in time with the weeping from the flange 9 drainage of submarine pipeline, thereby avoid causing the pollution to the ocean. The liquid leakage port 15 is arranged at the bottom of the recovery device body 1 to discharge the liquid in the recovery device body 1 as much as possible, and the arrangement of one end of the recovery pipeline 3 at the bottom of the liquid leakage port 15 is also convenient for draining the liquid.

As an embodiment of the present invention, the recycling device body 1 includes a first body 11, a second body 12, at least two sealing rubber strips 13, a fastening bolt 14, the first body 11 is connected to the second body 12 through the fastening bolt 14, and the at least two sealing rubber strips 13 are respectively disposed at the inner side contour of the first body 11 and the second body 12.

The first body 11 and the second body 12 wrap the pipeline from the outside of the pipeline respectively, and wrap the flange 9 connecting the adjacent pipeline in the pipeline, preferably, in order to match with the circular oil and gas pipeline 8, the first body 11 and the second body 12 are both arc structures, the first body 11 and the second body 12 are connected through the fastening bolt 14, a hollow cavity is formed inside the first body 11 and the second body 12, the whole flange 9 is wrapped in the hollow cavity, and the oil and gas leaked from the flange 9 can be collected temporarily by the hollow cavity, the sealing rubber strip 13 is used for isolating the hollow cavity from the outside to form a sealed hollow cavity, specifically, the sealing rubber strip 13 is arranged at the connection part of the first body 11 and the oil and gas pipeline 8, the connection part of the second body 12 and the oil and gas pipeline 8, and the connection part of the first body 11 and the second body 12, make first body 11 and second body 12 adhere to oil gas pipeline 8 after, inside forms a confined cavity that holds flange 9, makes oil gas also can remain in recovery unit body 1 and not spread everywhere after flange 9 department leaks, has reached the effect that prevents to produce the pollution. Preferably, the first body 11 and the second body 12 are welded by using a stainless steel material.

As an embodiment of the present invention, a groove is formed along the inner contour circumference of the first body 11 and the second body 12, and the sealing rubber strip 13 is installed in the groove.

The arrangement of the groove can facilitate the installation of the sealing rubber strip 13, and the groove can be correspondingly arranged by combining with the structure and the size of the sealing rubber strip 13, so that the depth of the groove is slightly smaller than the radial size of the sealing rubber strip 13, and good sealing is ensured. The sealing rubber strips 13 can be of a closed frame structure and installed around the inner side profiles of the first body 11 and the second body 12, and can also be of a strip structure and installed in grooves of the inner side profiles of the first body 11 and the second body 12, the joints of the upper end and the lower end of the first body 11 and the oil-gas pipeline 8 are respectively provided with at least one sealing rubber strip 13 at the joints of the upper end and the lower end of the second body 12 and the oil-gas pipeline 8, and the joints of the two sides of the first body 11 and the two sides of the second body 12 are respectively provided with at least one sealing rubber strip 13 so as to ensure the sealing performance of the hollow cavity formed by the first body 11 and the second body 12 around the accommodating flange 9.

As an embodiment of the utility model, still include the blowdown pipeline 5, the blowdown pipeline 5 still is equipped with back-fire relief valve 7 with the accumulator tank body 2 intercommunication in the blowdown pipeline 5.

Combustible gas in the storage tank body 2 can be emptied in time through the emptying pipeline 5, so that the storage tank body 2 is prevented from being deformed or exploded due to excessive gas storage of the storage tank body 2; the fire relief valve 7 arranged on the emptying pipeline 5 can prevent the explosion caused by the fire disaster introduced into the storage tank body 2 due to thunder and lightning and the like, and ensure the safety of field oil and gas production.

As an embodiment of the utility model, still include temperature monitoring unit 43 and humidity monitoring unit 44, temperature monitoring unit 43 and humidity monitoring unit 44 all set up in recovery unit body 1 and all with alarm device communication connection.

In the marine environment of high damp heat and high salinity, chemical and electrochemical corrosion easily take place for the steel material of oil gas pipeline in flange 9 department, consequently can carry out the prejudgement from the source through carrying out temperature and humidity monitoring near flange 9, can perceive in time before the leakage takes place or when the leakage takes place, will lose to the lowest, prevent suffering from in the bud. As one of the embodiments, the temperature monitoring unit 43 adopts a temperature monitoring probe, the humidity monitoring unit 44 adopts a humidity monitoring probe, and the temperature monitoring probe and the humidity monitoring probe are installed on the recovery device body 1 through threads and a sealing ring to monitor the temperature and the humidity in real time. When the temperature or the humidity is abnormal, the alarm device can give an alarm.

As an embodiment of the present invention, the device further comprises a base 6, wherein the base 6 is installed at the bottom of the storage tank 2.

The base 6 provides support for the storage tank 2.

Example 2

The utility model relates to a oil and gas pipeline flange leak detection and recovery unit's second embodiment, this embodiment is similar with embodiment 1, and the difference lies in, still including the management platform that is used for receiving the monitoring result, gaseous monitoring unit 41, liquid level monitoring unit 42, temperature monitoring unit 43, humidity monitoring unit 44 all with management platform communication connection.

The management platform can carry out unified management on the data and can also record the monitoring result by utilizing the management platform. Furthermore, the management platform can be used for communicating with operators on duty and fault repair personnel, and warning reminding is carried out through short messages when abnormality occurs.

Example 3

The utility model relates to an embodiment of oil gas pipeline system, including a plurality of oil gas pipelines 8, a plurality of flange 9, a plurality of as above-mentioned oil and gas pipeline flange 9 leak detection and recovery unit, flange 9 sets up at two adjacent 8 junctions of oil gas pipeline, and 1 sealed cowlings of recovery unit body are located outside the flange 9.

The oil and gas pipeline system containing the flange leakage monitoring and recovery device can solve the problems of monitoring the leakage at the interface of the flange 9 on the oil and gas pipeline 8, alarming, recovering the leakage and the like, thereby timely finding the leakage at the flange 9 in the pipeline system, avoiding the environment pollution caused by the leakage, avoiding the danger of leaked oil gas drifting above the oil and gas pipeline 8 and the harm of the leaked oil gas to the human body, and more conforming to the field safety management and equipment intelligent development trend.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides a gas transmission pipeline flange leak detection and recovery unit, its characterized in that, including be used for the cover locate flange (9) outer and sealed recovery unit body (1) that sets up, be used for the temporary storage leak liquid the holding vessel body (2), recovery pipeline (3), be used for monitoring combustible gas's gas monitoring unit (41), be used for monitoring the liquid level monitoring unit (42) of liquid level height in the holding vessel body (2), recovery pipeline (3) one end with recovery unit body (1) intercommunication, the other end and holding vessel body (2) intercommunication, gas monitoring unit (41) set up in recovery unit body (1), liquid level monitoring unit (42) set up in holding vessel body (2).

2. The oil and gas pipeline flange leakage monitoring and recovery device according to claim 1, further comprising an alarm device for alarming, wherein the alarm device is in communication connection with the gas monitoring unit (41) and the liquid level monitoring unit (42), respectively.

3. The oil and gas pipeline flange leakage monitoring and recovery device according to claim 2, wherein a liquid leakage port (15) is formed at the bottom of the recovery device body (1), and one end of the recovery pipeline (3) is arranged at the bottom of the liquid leakage port (15).

4. Oil and gas pipeline flange leak monitoring and recovery device according to claim 3, characterized in that, the recovery device body (1) comprises a first body (11), a second body (12), at least two sealing rubber strips (13), a fastening bolt (14), the first body (11) and the second body (12) are connected through the fastening bolt (14), and the at least two sealing rubber strips (13) are respectively arranged at the inner side contour of the first body (11) and the second body (12).

5. Oil and gas pipeline flange leak monitoring and recovery device according to claim 4, characterized in that a groove is provided circumferentially along the inner profile of the first body (11) and the second body (12), and the sealing rubber strip (13) is mounted in the groove.

6. Oil and gas pipeline flange leakage monitoring and recovery device according to any one of claims 2 to 5, characterized by further comprising a vent pipeline (5), wherein the vent pipeline (5) is communicated with the storage tank body (2), and a fire-retardant valve (7) is further arranged in the vent pipeline (5).

7. The oil and gas pipeline flange leakage monitoring and recovering device according to claim 6, further comprising a temperature monitoring unit (43) and a humidity monitoring unit (44), wherein the temperature monitoring unit (43) and the humidity monitoring unit (44) are both arranged in the recovering device body (1) and are both in communication connection with the alarm device.

8. The oil and gas pipeline flange leakage monitoring and recovery device according to claim 7, further comprising a base (6), wherein the base (6) is installed at the bottom of the storage tank body (2).

9. The oil and gas pipeline flange leakage monitoring and recovery device according to claim 8, further comprising a management platform for receiving monitoring results, wherein the gas monitoring unit (41), the liquid level monitoring unit (42), the temperature monitoring unit (43), and the humidity monitoring unit (44) are all in communication connection with the management platform.

10. An oil and gas pipeline system, characterized by comprising a plurality of oil and gas pipelines (8), a plurality of flanges (9), a plurality of oil and gas pipeline flange leakage monitoring and recovery device as claimed in any one of claims 1 to 9, wherein the flanges (9) are arranged at the joints of two adjacent oil and gas pipelines (8), and the recovery device body (1) is sealed and covered outside the flanges (9).

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