CN205691304U - Long oil and gas pipeline integrity detection analog systems - Google Patents

Abstract

This utility model discloses a simulation system for detecting the integrity of long-distance oil and gas pipelines, comprising four pipeline defect detection sections: a coating damage detection section (1), a coating peeling detection section (2), a valve leakage detection section (3), and a pore leakage detection section (4). The input ports of all four pipeline defect detection sections are connected to the input pipeline (5), and the output ports of all four pipeline defect detection sections are connected to the output pipeline (6). Beneficial effects: This device has a simple structure, convenient and reliable control, and high safety performance. It facilitates understanding and learning of pipeline leakage monitoring and detection processes, and is beneficial for training professional pipeline inspectors in factories and for teaching students in schools. It provides a foundation for monitoring and detecting real pipeline leaks, improves the reliability of real pipeline protection, and reduces the cost of real pipeline maintenance.

Description

Integrity detection simulation system for long-distance oil and gas pipelines

technical field

The utility model relates to the technical field of oil and gas safety engineering, in particular to a simulation system for integrity detection of long-distance oil and gas pipelines.

Background technique

Due to the natural corrosion, aging, natural disasters, loose connection of pipelines and man-made destruction of oil and gas pipelines, pipeline leakage accidents occur from time to time. If toxic, harmful, flammable and explosive substances are transmitted, it is easy to cause personnel poisoning, Explosion or fire accident.

In order to prevent the above-mentioned accidents, people take different protection measures to protect the pipeline in real time, but because the effectiveness of the protection measures is unknown, there are often defects such as poor reliability of the protection measures, short protection period, etc., and the protection of the pipeline cannot be realized. Repeated maintenance and overhaul of pipelines, and long-distance pipelines have long transportation distances and wide design scopes, resulting in heavy workload for staff, high pipeline transportation costs, poor reliability, and high risk factors.

Moreover, because pipelines often travel long distances and involve a wide range of areas, on-site pipeline leak detection teaching requires long journeys to different locations for observation and learning. The teaching conditions are difficult, and the teaching quality is poor and the teaching cost is high. It is difficult to cultivate high-level skills. professional inspectors.

Utility model content

In order to solve the above problems, the utility model proposes an oil and gas long-distance pipeline integrity detection simulation system, which simulates the detection of the coating integrity and cathodic protection effectiveness of real long-distance pipelines to improve the reliability of real long-distance pipelines. Reduce the protection cost of the long-distance pipeline system, and facilitate the factory to train professional pipeline inspection personnel and the school to teach students.

In order to achieve the above object, the concrete technical scheme that the utility model adopts is as follows:

A long-distance oil and gas pipeline integrity detection simulation system, the key of which is that it includes four pipeline defect detection sections, which are respectively coating damage detection section, coating peeling detection section, valve leakage detection section, pore leakage detection section, four sections The input ports of the pipeline defect detection section are all connected to the input pipeline, and the output ports of the four pipeline defect detection sections are all connected to the output pipeline.

Through the above design, the gas or liquid is introduced into the input pipeline, and the four pipeline defect detection sections are respectively inspected separately, and the defects such as leakage and coating damage that will occur in the pipeline are detected at the same time. , measurement, and simulated the pipeline protection problem in the real pipeline transportation, which is convenient for people to understand and learn the pipeline leakage monitoring and detection process, which is conducive to the training of beginner technicians in factories, and is also conducive to teaching in schools. Detection provides the basis for improving the reliability of real pipeline protection and reducing the cost of real pipeline maintenance.

As another implementation manner, four pipeline defect detection sections are connected in parallel between the input pipeline and the output pipeline.

As an implementation, the four pipeline defect detection sections are randomly connected in series to form a first pipeline, and a second pipeline is arranged parallel to the plane where the first pipeline is located, and the four pipeline defect detection sections between two The connecting ends of the common end are connected with one end of a communication pipeline, and there are three communication pipelines in total, and the other ends of the three communication pipelines are connected with the second pipeline, which are respectively the first communication pipeline, the second communication pipeline, and the third communication pipeline , the pipeline defect detection section separated by the three communication pipelines corresponds to the second pipeline one by one; one end of the first pipeline communicates with the input pipeline, and the other end of the first pipeline communicates with the output pipeline One end of the second pipeline communicates with the input pipeline, and the other end of the second pipeline communicates with the output pipeline.

By adopting the above scheme, through the separation of the three communicating pipelines, the four pipeline defect detection sections can be separated two by two, and the three communicating pipelines are connected with the second pipeline, so that each pipeline defect detection section can form a separate flow circuit, and then Each pipeline defect detection section is tested separately to avoid interference between the four pipeline defect detection sections and improve detection accuracy.

To further describe, the surface of the first pipeline and the second pipeline is coated with a polyethylene anti-corrosion coating, and the first cathodic protection device and the first cathodic protection pile are installed on the first pipeline. A cathodic protection pile is connected with a first potential detector, a second cathodic protection device and a second cathodic protection pile are installed on the second pipeline, and a second potential detector is connected with the second cathodic protection pile .

Using the above scheme, coating the polyethylene anti-corrosion coating on the surface of the first pipeline and the second pipeline can effectively protect the pipeline from corrosion caused by the external environment, and the pipeline can be further protected by a cathodic protection device, and through Comparing the data detected by the contrast potential detector with the reference voltage, the working condition of the cathodic protection device can be judged. The whole scheme makes the pipeline better protected, reduces the damage to the pipeline, and prolongs the service life of the entire system , has played a demonstration role in the actual pipeline protection and has a guiding role for learners.

To further describe, the coating damage detection section includes a first coating damage point and a second coating damage point, a first solenoid valve is arranged upstream of the first coating damage point, and the first coating damage point Downstream of the damage point, a first pressure sensor, a first flow sensor, a second coating damage point, a second pressure sensor, a second flow sensor, and a second solenoid valve are arranged in sequence, and the coating damage detection section is connected to the next section of pipeline The common connection end of the defect detection section communicates with one end of the first communication pipeline, a third solenoid valve is arranged on the first communication pipeline, and a second electromagnetic valve is arranged on the second pipeline corresponding to the coating damage detection section. Four solenoid valves.

Among them, the first coating damage point and the second coating damage point refer to the circular pit of polyethylene anti-corrosion coating set in the coating damage detection section, and the first coating damage point refers to a circular pit with a diameter less than 10mm , The second coating damage point refers to a circular pit with a diameter between 10mm-20mm. Using the above scheme, by controlling the opening and closing of the first electromagnetic valve, the second electromagnetic valve, and the third electromagnetic valve, the coating damage detection section forms a separate circuit, which is connected to the input pipeline and the output pipeline respectively, so as to realize separate detection Defects are detected, which is convenient for training professional inspectors and school teaching.

To further describe, the coating peeling detection section includes a coating peeling point, a fifth solenoid valve is arranged upstream of the coating peeling point, a third pressure sensor, a third pressure sensor, and a third pressure sensor are arranged downstream of the coating peeling point. Three flow sensors, the sixth solenoid valve, the coating peeling detection section communicates with the common connection end of the next pipeline defect detection section and one end of the second communication pipeline, and a seventh communication pipeline is arranged on the second communication pipeline. The solenoid valve is provided with an eighth solenoid valve on the second pipeline corresponding to the coating peeling detection section.

The peeling point of the coating is the peeling of the polyethylene anti-corrosion coating on the pipeline, and the size of the peeling is a circular glass block with a diameter of 15mm. Using the above scheme, by controlling the fifth solenoid valve, the sixth solenoid valve, and the seventh solenoid valve , The opening and closing of the eighth solenoid valve makes the coating peeling detection section form a separate circuit, and the coating peeling detection section is connected with the input pipeline and the output pipeline respectively, so as to realize the independent detection of defects, which is convenient for training professional inspection personnel and school teaching.

To further describe, the valve leakage detection section includes a valve leakage point, a ninth electromagnetic valve is arranged upstream of the valve leakage point, and a fourth pressure sensor, a fourth flow sensor, and a tenth electromagnetic valve are arranged downstream of the valve leakage point in sequence. Valve, the valve leakage detection section communicates with the common connection end of the next pipeline defect detection section and one end of the third communication pipeline, an eleventh electromagnetic valve is arranged on the third communication pipeline, and the valve A twelfth electromagnetic valve is arranged on the second pipeline corresponding to the leak detection section.

Among them, the valve leakage point is the leakage of the pipeline ball valve. Using the above scheme, by controlling the opening and closing of the ninth solenoid valve, the tenth solenoid valve, the eleventh solenoid valve, and the twelfth solenoid valve, the valve leakage detection section is formed. The separate circuit and the valve leakage detection section are respectively connected to the input pipeline and the output pipeline, so as to realize the detection of defects independently, which is convenient for training professional testing personnel and school teaching.

To further describe, the pore leakage detection section includes a first pipe hole leakage point and a second pipe hole leakage point, a thirteenth solenoid valve is arranged upstream of the first pipe hole leakage point, and the first pipe hole leakage point Downstream of the point, the fifth pressure sensor, the fifth flow sensor, the second pipe hole leakage point, the sixth pressure sensor, the sixth flow sensor, and the fourteenth solenoid valve are arranged in sequence. The pipeline is provided with a fifteenth solenoid valve.

Among them, the first pipe hole leakage point and the second pipe hole leakage point are provided with pipe holes on the pipeline, wherein, the first pipe hole leakage point is a small hole with a pipe hole size of 1.5 mm, and the second pipe hole leakage point is a pipe hole. The hole is a small hole of 3.0 mm. Using the above scheme, by controlling the opening and closing of the thirteenth solenoid valve, the fourteenth solenoid valve, the fifteenth solenoid valve, and the sixteenth solenoid valve, the air hole leakage detection section is formed. The separate circuit and the pore leakage detection section are respectively connected to the input pipeline and the output pipeline, so as to realize the independent detection of defects, which is convenient for training professional testing personnel and school teaching.

To further describe, a seventh pressure sensor is set on the input pipeline, a seventh flow sensor is set downstream of the seventh pressure sensor, an eighth pressure sensor is set on the output pipeline, and the eighth pressure sensor is set on the output pipeline. An eighth flow sensor is arranged downstream of the pressure sensor, and gas or liquid is passed into the input pipeline;

Gas is passed into the input pipeline, the first input end of the input pipeline communicates with the air outlet pipe of the air compressor, a sixteenth electromagnetic valve is arranged on the air outlet pipe, and the first output end of the input pipeline It is communicated with the input port of the four pipeline defect detection sections, the second input end of the output pipeline is connected with the output port of the four pipeline defect detection sections, and the second output end of the output pipeline is connected with the air compressor The air intake pipe is communicated with, and a seventeenth electromagnetic valve is arranged on the air intake pipe;

Liquid is passed into the input pipeline, the first input end of the input pipeline communicates with the water outlet pipe of the water pump, an eighteenth solenoid valve is arranged on the water outlet pipe, and the first output end of the input pipeline communicates with the four outlet pipes. The input port of the pipeline defect detection section in the first section is connected, the second input end of the output pipeline is connected with the output port of the pipeline defect detection section in the fourth section, and the second output end of the output pipeline is connected with the water inlet pipe of the water tank , a nineteenth electromagnetic valve is arranged on the water inlet pipe, and the water pump is arranged in the water tank.

By adopting the above scheme, it is possible to feed gas or liquid into the first pipeline and the second pipeline, and to detect and simulate defects such as leakage and corrosion of gas and liquid to pipelines respectively, and the seventh pressure sensor and the seventh flow sensor Detect the pressure and flow of the output liquid or gas. The eighth pressure sensor and the eighth flow sensor can detect the pressure and flow of the gas or liquid after passing through the pipeline defect detection section. By comparing the data before and after, the four sections can be judged respectively. Whether there are fault defects in the pipeline defect detection section makes the detection simpler, more convenient and more accurate.

To further describe, the first pipeline and the second pipeline are respectively provided with at least one pressure reducing valve, at least one safety valve, at least one reserved interface, at least one pipeline leakage detector, and at least one pipeline anti-corrosion layer condition detection instrument, the first pipeline and the second pipeline are both X80 steel pipes with an inner diameter of 76mm and a wall thickness of 5mm, and the first pipeline and the second pipeline are arranged side by side in a plexiglass groove. The distance between a pipe and the second pipe is 500 mm, and 500 mm of soil is covered on the first pipe and the second pipe.

The above-mentioned scheme can improve the safety and practicability of pipeline transportation, and effectively avoid the damage caused by excessive pipeline pressure. At the same time, when the pipeline needs to branch and divert, the diversion pipeline can be connected through the reserved interface, which is practical and convenient. It perfectly simulates the setting of the pipeline in pipeline transportation, improves the simulation effect, reliability and practicability of the simulation device, improves the compressive strength, low temperature toughness and welding performance of the pipeline, prolongs the service life of the pipeline, and reduces the corrosion rate of the pipeline. Extended service life.

Beneficial effects of the utility model: the buried long-distance pipeline anti-corrosion coating, cathodic protection and pipeline defect detection are simulated, the anti-corrosion effect of the pipeline anti-corrosion coating is tested, and the effectiveness of cathodic protection is also judged. At the same time, the defects such as leakage and coating damage that will occur in the pipeline are detected and measured, and the pipeline protection problem in real pipeline transportation is simulated. The device has simple structure, convenient and reliable control, and high safety performance, which is beneficial for people to understand and learn about pipeline leakage. The monitoring and testing process is convenient for factories to train professional pipeline testing personnel and schools to teach students. It provides a basis for real pipeline leakage monitoring and testing, improves the reliability of real pipeline protection, and reduces the cost of active pipeline maintenance.

Description of drawings

Fig. 1 is the structural representation of the utility model;

detailed description

The specific embodiment and working principle of the present utility model will be described in further detail below in conjunction with the accompanying drawings.

Real-time example:

It can be seen from Figure 1 that a long-distance oil and gas pipeline integrity detection simulation system includes four pipeline defect detection sections, which are coating damage detection section 1, coating peeling detection section 2, valve leakage detection section 3, and air hole detection section. The leak detection section 4 and the input ports of the four pipeline defect detection sections are all connected to the input pipeline 5 , and the output ports of the four pipeline defect detection sections are all connected to the output pipeline 6 .

It can also be seen from Fig. 1 that in this embodiment, the four pipeline defect detection sections are connected in series to form the first pipeline, and a second pipeline 8 is arranged in parallel on the plane where the first pipeline is located, and two pipeline defect detection sections of the four sections are connected in series. The connecting ends of the common ends between the two are connected with one end of a communication pipeline, wherein the first common connection ends of the coating damage detection section 1 and the coating peeling detection section 2 are connected with one end of the first communication pipeline 71, and the coating is peeled off. The second common connection end of the detection section 2 and the valve leakage detection section 3 communicates with one end of the second communication pipeline 72, and the third common connection end of the valve leakage detection section 3 and the pore leakage detection section 4 communicates with the third communication pipeline 73 The common end connection end of the three communication pipelines is connected with the second pipeline 8, and the pipeline defect detection section separated by the three communication pipelines corresponds to the second pipeline 8 one by one, and one end of the first pipeline is connected with the input pipeline 5 The other end of the first pipeline communicates with the output pipeline 6, one end of the second pipeline 8 communicates with the input pipeline 5, and the other end of the second pipeline 8 communicates with the output pipeline 6.

It can also be seen from Fig. 1 that the surface of the first pipeline and the second pipeline 8 is coated with polyethylene anti-corrosion coating, the first cathodic protection device and the first cathodic protection pile are installed on the first pipeline, and the first cathodic protection pile is installed on the first pipeline. A first potential detector is connected to the cathodic protection pile, a second cathodic protection device and a second cathodic protection pile are installed on the second pipeline 8, and a second potential detector is connected to the second cathodic protection pile.

It can also be seen from Fig. 1 that the coating damage detection section 1 includes a first coating damage point 101 and a second coating damage point 102, and a first solenoid valve 103 is arranged upstream of the first coating damage point 101, as described in the first coating damage point 101. Downstream of a coating damage point 101, a first pressure sensor 104, a first flow sensor 105, a second coating damage point 102, a second pressure sensor 106, a second flow sensor 107, and a second solenoid valve 108 are arranged in sequence, The common connection end of the layer damage detection section 1 and the next pipeline defect detection section communicates with one end of the first communication pipeline 71, and a third solenoid valve 109 is arranged on the first communication pipeline 71, corresponding to the coating damage detection section 1. A fourth solenoid valve 110 is disposed on the second pipeline 8 .

In this embodiment, the first coating damage point and the second coating damage point refer to the polyethylene anti-corrosion coating circular pit set in the coating damage detection section, wherein the first coating damage point refers to a diameter of 10mm The circular pit of the second coating refers to the circular pit with a diameter of 20mm.

It can also be seen from FIG. 1 that the coating peeling detection section 2 includes a coating peeling point 201, a fifth solenoid valve 202 is arranged upstream of the coating peeling point 201, and a third pressure is provided downstream of the coating peeling point 201. Sensor 203, the third flow sensor 204, the sixth solenoid valve 205, the coating peeling detection section 2 communicates with the common connection end of the next pipeline defect detection section and one end of the second communication pipeline 72, and is set on the second communication pipeline 72 There is a seventh solenoid valve 206 , and an eighth solenoid valve 207 is provided on the second pipeline 8 corresponding to the coating peeling detection section 2 . In the present embodiment, the peeling point of the coating is the peeling off of the polyethylene anticorrosion coating on the pipeline, and the size of the peeling is a circular glass block with a diameter of 15mm.

It can also be seen from FIG. 1 that the valve leakage detection section 3 includes a valve leakage point 301, a ninth solenoid valve 302 is arranged upstream of the valve leakage point 301, and a fourth pressure sensor 303 and a fourth flow sensor are sequentially arranged downstream of the valve leakage point 301. 304, the tenth electromagnetic valve 305, the valve leakage detection section 3 communicates with the common connection end of the next pipeline defect detection section and one end of the third communication pipeline 73, and an eleventh electromagnetic valve 306 is arranged on the third communication pipeline 73, A twelfth solenoid valve 307 is arranged on the second pipeline 8 corresponding to the valve leakage detection section 3 . In this embodiment, the valve leakage point is the pipeline ball valve leakage.

It can also be seen from Fig. 1 that the air hole leakage detection section 4 includes a first pipe hole leakage point 401 and a second pipe hole leakage point 402, the upstream of the first pipe hole leakage point 401 is provided with a thirteenth electromagnetic valve 403, the first Downstream of the pipe hole leakage point 401, a fifth pressure sensor 404, a fifth flow sensor 405, a second pipe hole leakage point 402, a sixth pressure sensor 406, a sixth flow sensor 407, and a fourteenth solenoid valve 408 are arranged in sequence. A sixteenth electromagnetic valve 409 is provided on the second pipeline 8 corresponding to the pore leakage detection section 4 .

In this embodiment, the first pipe hole leakage point and the second pipe hole leakage point are provided with pipe holes on the pipeline, wherein the first pipe hole leakage point is a small hole with a pipe hole of 1.5mm, and the second pipe hole The leakage point is a small hole with a pipe hole of 3.0 mm.

It can also be seen from Fig. 1 that the seventh pressure sensor 501 is arranged on the input pipeline 5, the seventh flow sensor 502 is arranged downstream of the seventh pressure sensor 501, and the eighth pressure sensor 601 is arranged on the output pipeline 6. An eighth flow sensor 602 is arranged downstream of the eighth pressure sensor 601, and liquid or gas is passed into the input pipe 5;

Wherein, gas is passed into the input pipeline 5, the first input end of the input pipeline 5 communicates with the air outlet pipe of the air compressor, the sixteenth electromagnetic valve 503 is arranged on the air outlet pipe, and the first output end of the input pipeline 5 It communicates with the input port of the four-section pipeline defect detection section, the second input end of the output pipeline 6 communicates with the output port of the four-section pipeline defect detection section, and the second output end of the output pipeline 6 communicates with the intake pipe of the air compressor. A seventeenth solenoid valve 603 is arranged on the intake pipe;

When liquid is passed into the input pipeline 5, the first input end of the input pipeline 5 communicates with the water outlet pipe of the water pump, and an eighteenth electromagnetic valve 504 is arranged on the water outlet pipe, and the first output end of the input pipeline 5 is connected to the fourth section The input port of the pipeline defect detection section is connected, the second input end of the output pipeline 6 is connected with the output port of the four-section pipeline defect detection section, the second output end of the output pipeline 6 is connected with the water inlet pipe of the water tank, and the water inlet pipe is provided with The nineteenth electromagnetic valve 604 and the water pump are arranged in the water tank.

It can also be seen from Fig. 1 that a pressure reducing valve, a safety valve, a reserved interface, a pipeline leakage detector, and a pipeline anti-corrosion layer condition detector are respectively arranged in the first pipeline and the second pipeline 8. The pipeline and the second pipeline 8 are all X80 steel pipes with an internal diameter of 76mm and a wall thickness of 5mm. The first pipeline and the second pipeline 8 are arranged side by side in the plexiglass groove, and the distance between the first pipeline and the second pipeline 8 is 500mm, the first pipe and the second pipe 8 are covered with 500mm of soil.

The working principle of the utility model: when the liquid is passed into the input pipeline 5, a sufficient amount of water is put into the water tank, and each solenoid valve is controlled to make one of the four pipeline defect detection sections form a water flow circuit, and the frequency conversion water pump is turned on. By comparing the data of the seventh pressure sensor 501 and the eighth pressure sensor 601 or comparing whether the data of the seventh flow sensor 502 and the eighth flow sensor 602 are consistent, if they are consistent, the pipeline defect detection section is intact and there is no leakage defect, and then Comparing the parameters of the first potential detector, the second potential detector and the reference voltage, and combining the detection results of the pipeline anticorrosion layer condition detector, it is possible to detect whether the pipeline has coating peeling or coating damage, as well as coating peeling and The size of the coating breakage. And the comparison of the potential of the first potential detector and the second potential detector with the reference voltage can also determine whether the cathodic protection device is intact,

It can also be reflected that if it is within the reference potential range, the cathodic protection is good. If it is not within the reference potential range, it is necessary to dig out the cathodic protection device for inspection or replacement to realize the protection of the pipeline.

Wherein, when detecting the coating damage detection section 1, the fourth electromagnetic valve 110, the fifth electromagnetic valve 202, the seventh electromagnetic valve 206, the eleventh electromagnetic valve 306, and the fourteenth electromagnetic valve 408 are controlled to be closed, and the fourth electromagnetic valve 110 is controlled to be opened. Eighteenth solenoid valve 504, first solenoid valve 103, second solenoid valve 108, third solenoid valve 109, eighth solenoid valve 207, twelfth solenoid valve 307, fifteenth solenoid valve 409, nineteenth solenoid valve 604 , combined with the first pressure sensor 104, the first flow sensor 105, the second pressure sensor 106, and the second flow sensor 107 to further detect the flow and pressure of the liquid in the pipeline to improve the measurement accuracy.

When detecting the coating peeling detection section 2, the control closes the first solenoid valve 103, the second solenoid valve 108, the eighth solenoid valve 207, the ninth solenoid valve 302, the eleventh solenoid valve 306, and the fourteenth solenoid valve 408 , control to open the eighteenth solenoid valve 504, the fourth solenoid valve 110, the third solenoid valve 109, the fifth solenoid valve 202, the sixth solenoid valve 205, the seventh solenoid valve 206, the twelfth solenoid valve 307, the fifteenth solenoid valve The solenoid valve 409, the nineteenth solenoid valve 604, combined with the third pressure sensor 203 and the third flow sensor 204 further detect the flow and pressure of the liquid in the pipeline to improve measurement accuracy.

When detecting the valve leakage detection section 3, control and close the first solenoid valve 103, the third solenoid valve 109, the sixth solenoid valve 205, the thirteenth solenoid valve 403, the twelfth solenoid valve 307, and the fourteenth solenoid valve 408 , control to open the eighteenth solenoid valve 504, the fourth solenoid valve 110, the eighth solenoid valve 207, the seventh solenoid valve 206, the ninth solenoid valve 302, the tenth solenoid valve 305, the eleventh solenoid valve 306, the sixteenth solenoid valve The electromagnetic valve 409, the nineteenth electromagnetic valve 604, combined with the fourth pressure sensor 303 and the fourth flow sensor 304 further detect the flow and pressure of the liquid in the pipeline to improve measurement accuracy.

When detecting the pore leakage detection section 4, the first solenoid valve 103, the third solenoid valve 109, the seventh solenoid valve 206, the tenth solenoid valve 305, and the sixteenth solenoid valve 409 are controlled to be closed, and the eighteenth solenoid valve is controlled to be opened. 504, the fourth solenoid valve 110, the eighth solenoid valve 207, the twelfth solenoid valve 307, the eleventh solenoid valve 306, the thirteenth solenoid valve 403, the fourteenth solenoid valve 408, the nineteenth solenoid valve 604, and Combined with the fifth pressure sensor 404, the fifth flow sensor 405, the sixth pressure sensor 406, and the sixth flow sensor 407, the flow and pressure of the liquid in the pipeline are further detected to improve measurement accuracy. When the gas is passed into the input pipeline 5, the principle is the same, and will not be repeated here.

The device has simple structure, convenient and reliable control, and high safety performance. It is beneficial for people to understand and learn the pipeline leakage monitoring and detection process, and it is convenient for factories to train professional pipeline inspection personnel and schools to teach students. It provides a basis for real pipeline leakage monitoring and detection. , which improves the reliability of real pipeline protection and reduces the cost of real pipeline maintenance.

Claims (10)

1. a long oil and gas pipeline integrity detection analog systems, it is characterised in that: include four segment pipe defects detection sections, point Not for coating damage detection section (1), coating stripping detection section (2), valve leak detection section (3), pore Leak Detection section (4), The input port of four sections of described defect inspection sections all communicates with input channel (5), four sections of described defect inspection sections defeated Outlet all communicates with output channel (6).

Long oil and gas pipeline integrity detection analog systems the most according to claim 1, it is characterised in that: four sections of described pipes Road defects detection section is also connected between described input channel (5) and described output channel (6).

Long oil and gas pipeline integrity detection analog systems the most according to claim 1, it is characterised in that: four sections of described pipes Road defects detection section concatenates formation the first pipeline at random, is arranged with second pipe (8) in parallel in described first pipeline place plane, Four sections of described defect inspection sections common port between any two connects end one end all with a connecting pipe and connects, totally three Connecting pipe, the other end of three described connecting pipes connects with described second pipe (8), the respectively first connecting pipe (71), the second connecting pipe (72), third connecting pipeline (73), the defect inspection separated by three described connecting pipes Section and second pipe (8) one_to_one corresponding；

One end of described first pipeline connects with described input channel (5), the other end of described first pipeline and described outlet tube Road (6) connects, and described second pipe (8) one end connects with described input channel (5), described second pipe (8) other end and institute State output channel (6) connection.

Long oil and gas pipeline integrity detection analog systems the most according to claim 3, it is characterised in that: described first It is coated with polyethylene anticorrosion coating on pipeline and described second pipe (8) surface, described first pipeline is provided with first cloudy Electrode protector and the first cathodic protection stake, connect in the first cathodic protection stake and have the first potential detector, described second Being provided with the second cathode protection device and the second cathodic protection stake on pipeline (8), connecting in described second cathodic protection stake has Second potential detector.

Long oil and gas pipeline integrity detection analog systems the most according to claim 4, it is characterised in that: described coating is broken Damage detection section (1) and include the first coating damage point (101), the second coating damage point (102), described first coating damage point (101) upstream is provided with the first electromagnetic valve (103), and the downstream of described first coating damage point (101) is disposed with first Pressure transducer (104), first flow sensor (105), the second coating damage point (102), the second pressure transducer (106), Second flow sensor (107), the second electromagnetic valve (108), described coating damage detection section (1) and next segment pipe defects detection First public connecting end of section connects with one end of described first connecting pipe (71), sets on described first connecting pipe (71) It is equipped with the 3rd electromagnetic valve (109), the second pipe (8) that described coating damage detection section (1) is corresponding is provided with the 4th electromagnetism Valve (110).

Long oil and gas pipeline integrity detection analog systems the most according to claim 4, it is characterised in that: described coating is shelled Include coating stripping point (201) from detection section (2), the upstream of described coating stripping point (201) is provided with the 5th electromagnetic valve (202), the downstream described coating stripping point (201) is provided with the 3rd pressure transducer (203), the 3rd flow transducer (204), the 6th electromagnetic valve (205), described coating stripping detection section (2) and the second public company of next segment pipe defects detection section Connect end to connect with one end of described second connecting pipe (72), described second connecting pipe (72) is provided with the 7th electromagnetic valve (206), the second pipe (8) that described coating stripping detection section (2) is corresponding is provided with the 8th electromagnetic valve (207).

Long oil and gas pipeline integrity detection analog systems the most according to claim 4, it is characterised in that: described valve is let out Missing inspection is surveyed section (3) and is included that valve leak point (301), described valve leak point (301) upstream are provided with the 9th electromagnetic valve (302), Described valve leak point (301) downstream be disposed with the 4th pressure transducer (303), the 4th flow transducer (304), the tenth Electromagnetic valve (305), described valve leak detection section (3) and the 3rd public connecting end of next segment pipe defects detection section and described One end connection of third connecting pipeline (73), is provided with the 11st electromagnetic valve (306) on described third connecting pipeline (73), It is provided with the 12nd electromagnetic valve (307) on the second pipe (8) that described valve leak detection section (3) is corresponding.

Long oil and gas pipeline integrity detection analog systems the most according to claim 4, it is characterised in that: described pore is let out Missing inspection is surveyed section (4) and is included the first pore leakage point (401) and the second pore leakage point (402), described first pore leakage point (401) upstream is provided with the 13rd electromagnetic valve (403), and the downstream of described first pore leakage point (401) is disposed with Five pressure transducers (404), the 5th flow transducer (405), the second pore leakage point (402), the 6th pressure transducer (406), the 6th flow transducer (407), the 14th electromagnetic valve (408), described pore Leak Detection section (4) corresponding second The 15th electromagnetic valve (409) it is provided with on pipeline (8).

9. according to the long oil and gas pipeline integrity detection analog systems described in claim 3,4,5,6,7,8 any one, its It is characterised by: on described input channel (5), be provided with the 7th pressure transducer (501), at described 7th pressure transducer (501) downstream is provided with the 7th flow transducer (502), is provided with the 8th pressure transducer on described output channel (6) (601), it is provided with the 8th flow transducer (602), to described input channel in described 8th pressure transducer (601) downstream (5) gas or liquid it are passed through in；

Being passed through gas in described input channel (5), the first input end of described input channel (5) is given vent to anger with air compressor Pipe connects, and is provided with the 16th electromagnetic valve (503), the first outfan of described input channel (5) and four sections on this escape pipe The input port connection of described defect inspection section, the second input of described output channel (6) and four sections of described defect of pipeline The delivery outlet connection of detection section, the second outfan of described output channel (6) connects with the air inlet pipe of air compressor, described The 17th electromagnetic valve (603) it is provided with in air inlet pipe；

Being passed through liquid in described input channel (5), the first input end of described input channel (5) connects with the outlet pipe of water pump Logical, this outlet pipe is provided with the 18th electromagnetic valve (504), described in the first outfan of described input channel (5) and four sections The input port connection of defect inspection section, the second input of described output channel (6) and four sections of described defect inspections The delivery outlet connection of section, the second outfan of described output channel (6) connects with the water inlet pipe of water tank, sets on described water inlet pipe Being equipped with the 19th electromagnetic valve (604), described water pump is arranged in water tank.

Long oil and gas pipeline integrity detection analog systems the most according to claim 9, it is characterised in that: described One pipeline and described second pipe (8) are respectively arranged with at least one air relief valve, at least one relief valve, at least one reserved connects Mouth, at least one conduit leakage detecting instrument, at least one piping anti-corrosive coating detector, described first pipeline and described second Pipeline (8) be internal diameter be 76mm, wall thickness be the X80 steel pipe of 5mm, described first pipeline and described second pipe (8) set side by side Being placed in lucite groove, the spacing between described first pipeline and described second pipe (8) is 500mm, described first The soil of 500mm it is coated with on pipeline and described second pipe (8).