Leakage-proof safety warning device for oil and gas pipeline

Abstract

The invention discloses an oil and gas pipeline leakage-proof safety warning device which comprises an inner pipeline, a graphene sponge and an outer pipeline, the graphene sponge wraps the inner pipeline, symmetrical metal electrodes are arranged on the graphene sponge, electrode leads are connected to the metal electrodes, the outer side face of the graphene sponge is covered with an insulating heat conduction layer, and the outer pipeline is covered with an insulating heat conduction layer. A plurality of temperature sensors are arranged on the insulating heat conduction layer in the axial direction of the inner pipeline, a lead lock nut opening is formed in the outer pipeline, and the electrode lead and leads of the temperature sensors penetrate through the lead lock nut opening to be electrically connected with a communication controller. The oil and gas pipeline has the beneficial effects that the oil and gas pipeline is wrapped with the graphene sponge, when leaking out of the pipeline, petroleum can be absorbed by the graphene sponge on the outer side of the pipeline, pollution of petroleum leakage to the surrounding environment is prevented, the petroleum absorbed by the graphene sponge can be recycled subsequently, and resources are saved.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas transportation safety, and in particular to an oil and gas pipeline leakage prevention safety warning device. Background Art

[0002] Oil and gas generally refers to oil and gas used as fuel, such as petroleum and natural gas. Because they are flammable and explosive, these oil and gas have very high safety requirements during transportation, especially oil and gas leakage must not occur during transportation.

[0003] In the process of long-distance transportation of oil and gas, since the pipelines for transporting oil and gas are generally long, it is difficult to quickly find the location of the pipeline leak when the pipeline leaks, which increases the danger and the difficulty of detecting the leak. In addition, when a sudden leak occurs in the pipeline, a decompression wave will be generated at the leaking site, which is called a negative pressure wave. If a pressure sensor is set at both ends of the pipeline to detect the negative pressure wave, the leak can be judged and located. However, the sensor detection device only has a reminder function and cannot prevent oil leakage. From the time when the pipeline leak occurs to the time when the worker receives the signal transmitted by the detection device and then closes the corresponding pipeline, oil leakage has been occurring, causing pollution to the surrounding environment and waste of resources. In order to solve this problem, a device with leak prevention and monitoring alarm functions is needed for the oil and gas pipeline. Summary of the invention

[0004] In view of the above-mentioned prior art, the present invention provides an oil and gas pipeline leakage prevention safety warning device, which mainly solves the technical problems existing in the above-mentioned background technology.

[0005] To achieve the above object, the technical solution of the embodiment of the present invention is implemented as follows:

[0006] An oil and gas pipeline leakage prevention safety warning device comprises an inner pipeline, a graphene sponge and an outer pipeline, wherein the graphene sponge is wrapped on the inner pipeline, symmetrical metal electrodes are arranged on the graphene sponge, electrode leads are connected to the metal electrodes, the outer side of the graphene sponge is covered with an insulating heat-conducting layer, a plurality of temperature sensors are arranged on the insulating heat-conducting layer along the axial direction of the inner pipeline, the outer side of the insulating heat-conducting layer is wrapped with an insulating heat-insulating protective layer, the outer side of the insulating heat-insulating protective layer is wrapped with the outer pipeline, the outer pipeline comprises a first shell and a second shell, the first shell and the second shell are both fixedly connected with rubber pads, the first shell and the second shell are commonly connected with a fixing mechanism, the outer pipeline is provided with a lead lock female port, the electrode leads and the leads of the temperature sensor are electrically connected to a communication controller through the lead lock female port, the communication controller is connected to a power communication bus, and is connected to a main power supply and a host computer through the power communication bus.

[0007] Preferably, the fixing mechanism includes a first fixing block, a second fixing block and bolts, a plurality of the first fixing blocks are fixedly connected to the first outer shell, a plurality of the second fixing blocks are fixedly connected to the second outer shell, the first fixing blocks are rotatably connected to the bolts, and the bolts are respectively threadedly connected to the second fixing blocks.

[0008] Preferably, the graphene sponge is a polyurethane sponge loaded with a reduced graphene coating.

[0009] Preferably, the insulating heat-conducting layer is mica paper, and the seams of the mica paper are covered with tape.

[0010] Preferably, the inner pipe is provided with symmetrical temperature sensors along the circumferential direction.

[0011] Preferably, the insulating and heat-preserving protective layer is a glass fiber tape or fireproof and heat-preserving cotton impregnated with silicone liquid.

[0012] Preferably, a temperature acquisition unit, a data processing unit and a communication unit are provided inside the communication controller, the input end of the temperature acquisition unit is connected to the lead of the temperature sensor of the inner pipe, the output end of the temperature acquisition unit is connected to the input end of the data processing unit, the data processing unit is respectively connected to the communication unit and the input end of the electrode lead, and the other end of the communication unit is connected to the power communication bus.

[0013] Preferably, a warning light is provided on the outer pipe, and the warning light is electrically connected to the communication unit.

[0014] The beneficial effects of the present invention are:

[0015] (1) By wrapping the graphene sponge outside the oil and gas pipeline, when oil leaks from the pipeline, it will be absorbed by the graphene sponge outside the pipeline, preventing the oil leakage from polluting the surrounding environment. The oil absorbed by the graphene sponge can be recycled later, saving resources;

[0016] (2) Voltage is applied to the graphene sponge through the electrode leads and the metal electrodes arranged on the graphene sponge, and the graphene sponge will generate Joule heat. The generated heat can quickly reduce the viscosity of the leaked oil, thereby increasing the diffusion coefficient of the oil inside the graphene sponge, greatly improving the adsorption rate of the graphene sponge to the oil. Since oil is not conductive, the resistance of the graphene sponge that absorbs oil increases, resulting in a decrease in the Joule heat generated by the graphene sponge that absorbs oil. The temperature information is transmitted to the communication controller through the temperature sensor, and the communication controller uploads the temperature alarm information in a communication manner, so that the entire oil and gas pipeline can be monitored remotely by the host computer, so that long-distance oil and gas pipeline monitoring and alarm can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of an oil and gas pipeline leakage prevention safety warning device in an embodiment of the present application;

[0018] Figure 2 This is a schematic diagram of the structure of the internal and external pipelines in the embodiment of the present application;

[0019] Figure 3 This is a schematic diagram of the structure of the communication controller in the embodiment of the present application;

[0020] Description of Figure Numbers:

[0021] 1. Graphene sponge; 2. Metal electrode; 3. Electrode lead; 4. First shell; 5. Second shell; 6. Rubber pad; 7. Insulation and thermal conductive layer; 8. Temperature sensor; 9. Insulation and thermal protection layer; 10. Lead lock female port; 11. Communication controller; 12. Power communication bus; 13. Host computer; 14. First fixing block; 15. Second fixing block; 16. Bolt; 17. Temperature acquisition unit; 18. Data processing unit; 19. Communication unit; 20. Warning light; 21. Inner pipe. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further elaborated in detail below in conjunction with the drawings and specific embodiments of the specification. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. In the following description, the expression "some embodiments" is related to a subset of all possible embodiments, but it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0023] It should also be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "inside", "outside", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0024] Example 1

[0025] Please refer to the attached Figure 1-2The present application provides an oil and gas pipeline leakage prevention safety warning device, comprising an inner pipeline 21, a graphene sponge 1 and an outer pipeline, wherein the graphene sponge 1 is wrapped on the inner pipeline 21, and a symmetrical metal electrode 2 is arranged on the graphene sponge 1, and an electrode lead 3 is connected to the metal electrode 2. The outer side of the graphene sponge 1 is covered with an insulating heat-conducting layer 7, and a plurality of temperature sensors 8 are arranged on the insulating heat-conducting layer 7 along the axial direction of the inner pipeline 21. The outer side of the insulating heat-conducting layer 7 is wrapped with an insulating heat-insulating protective layer 9, and the outer side of the insulating heat-insulating protective layer 9 is provided with a plurality of temperature sensors 8. The outer pipe is wrapped, and the outer pipe includes a first shell 4 and a second shell 5. The first shell 4 and the second shell 5 are both fixedly connected with a rubber pad 6. The first shell 4 and the second shell 5 are commonly connected with a fixing mechanism. The outer pipe is provided with a lead lock female port 10. The electrode lead 3 and the lead of the temperature sensor 8 pass through the lead lock female port 10 and are electrically connected to a communication controller 11. The communication controller 11 is connected to a power communication bus 12, and is connected to a main power supply and a host computer 13 through the power communication bus 12.

[0026] By wrapping the graphene sponge 1 outside the oil and gas pipeline, when oil leaks from the pipeline, it will be absorbed by the graphene sponge 1 outside the pipeline, preventing the oil leakage from polluting the surrounding environment. The oil absorbed by the graphene sponge 1 can be recycled later to save resources. Anode and cathode electrodes are symmetrically arranged on the outer surface of the graphene sponge 1, and electrode leads 3 are connected to the cathode and cathode electrodes through conductive tapes. Then, an insulating heat-conducting layer 7 is arranged on the outer side of the graphene sponge 1, and a plurality of temperature sensors 8 are arranged along the axial direction of the inner pipeline 21 outside the insulating heat-conducting layer 7. The electrode leads 3 and the leads of the temperature sensor 8 pass through the lead lock female port 10 on the outer pipeline and are electrically connected to the communication controller 11. Then, the communication controller 11 is connected to the power communication bus 12, and is connected to the main power supply and the host computer 13 through the power communication bus 12. Voltage is applied to the graphene sponge 1 through the electrode leads 3 and the metal electrodes 2 arranged on the graphene sponge 1. , the graphene sponge 1 will generate Joule heat, and the generated Joule heat can quickly reduce the viscosity of the leaked oil, thereby increasing the diffusion coefficient of the oil inside the graphene sponge 1, greatly improving the adsorption speed of the graphene sponge 1 to the oil, and because the oil is not conductive, the resistance of the graphene sponge 1 that absorbs the oil increases, resulting in a decrease in the Joule heat generated by the graphene sponge 1 that absorbs the oil, and the change in Joule heat is transmitted to the temperature sensor 8 through the insulating heat-conducting layer 7, and the temperature information is transmitted to the communication controller 11 through the temperature sensor 8. The communication controller 11 uploads the temperature alarm information in a communication manner, so that the host computer 13 completes the remote monitoring of the entire oil and gas pipeline, so that the long-distance oil and gas pipeline monitoring alarm can be realized, and by installing devices on multiple pipe sections respectively, and the communication controllers 11 of different pipe sections are connected in parallel to the power communication bus 12, when leakage occurs in different pipe sections, the leaking pipe section can be determined by the position of the temperature sensor 8. Since the oil and gas pipeline is buried underground close to the surface, it is easily affected by the underground temperature, resulting in inaccurate measurement data of the temperature sensor 8. In order to ensure the accuracy of the measurement data of the temperature sensor 8, an insulating thermal insulation protective layer 9 is wrapped outside the insulating thermal conductive layer 7. The outer pipeline plays a role of dustproof, waterproof and impact-proof, ensuring the normal operation of the device inside the outer pipeline. The first outer shell 4 and the second outer shell 5 of the outer pipeline are fixed together by a fixing mechanism, which is convenient for disassembly and assembly of the outer pipeline and maintenance of the device inside the outer pipeline.

[0027] Furthermore, the fixing mechanism includes a first fixing block 14, a second fixing block 15 and a bolt 16. A plurality of the first fixing blocks 14 are fixedly connected to the first housing 4, a plurality of the second fixing blocks 15 are fixedly connected to the second housing 5, the first fixing blocks 14 are all rotatably connected to the bolts 16, and the bolts 16 are respectively threadedly connected to the second fixing blocks 15. The first housing 4 and the second housing 5 are placed at the pipe section to be monitored, and the first housing 4 and the second housing 5 are put together. The corresponding first fixing blocks 14 and the second fixing blocks 15 can be fixed together by the bolts 16, so that the first housing 4 and the second housing 5 can wrap the pipe together, and the rubber pad 6 can ensure the airtightness between the first housing 4 and the second housing 5.

[0028] Furthermore, the graphene sponge 1 is a polyurethane sponge with a reduced graphene coating. The polyurethane sponge is not only conductive but also has hydrophobic and oleophilic properties, ensuring that the graphene sponge 1 can monitor the leakage of oil and gas pipelines.

[0029] Furthermore, the insulating thermal conductive layer 7 is mica paper, and the mica paper joints are covered with tape. The insulating thermal conductive layer 7 is mica paper, and preferably, the mica paper is high thermal conductivity mica paper, which has insulation and high thermal conductivity properties, ensuring the normal operation of the temperature sensor 8.

[0030] Furthermore, the inner pipe 21 is provided with symmetrical temperature sensors 8 along the circumferential direction, so that if one set of temperature sensors 8 in the circumferential direction is damaged, the other temperature sensors 8 in the circumferential direction can still have a compensatory function, thereby ensuring the monitoring of oil and gas pipeline leakage and improving the practicality of the device.

[0031] Furthermore, the insulating and heat-preserving protective layer 9 is a glass fiber tape or fireproof heat-preserving cotton soaked in silicone liquid. The glass fiber tape or fireproof heat-preserving cotton soaked in silicone liquid can increase the waterproof, insulating and impact-resistant properties of the device, and at the same time insulate the inner pipe 21 to prevent the external temperature from affecting the temperature inside the device, causing interference to the temperature sensor 8, and reducing the accuracy of the device monitoring alarm.

[0032] Example 2

[0033] Please refer to the attached Figure 1-3The difference between this embodiment and embodiment 1 is that the communication controller 11 is provided with a temperature acquisition unit 17, a data processing unit 18 and a communication unit 19. The input end of the temperature acquisition unit 17 is connected to the lead of the temperature sensor 8 of the inner pipe 21, and the output end of the temperature acquisition unit 17 is connected to the input end of the data processing unit 18. The data processing unit 18 is respectively connected to the communication unit 19 and the input end of the electrode lead 3, and the other end of the communication unit 19 is connected to the power communication bus 12. The communication controller 11 has the functions of temperature acquisition and alarm information communication upload. The communication controller 11 uploads the temperature alarm information by communication. For the entire pipeline, the host computer 13 can complete the remote monitoring, so that the long-distance electric heating pipeline monitoring can be realized.

[0034] Furthermore, a warning light 20 is provided on the outer pipe, and the warning light 20 is electrically connected to the communication unit 19. The upper computer 13 transmits the information of the leaking pipe to the communication controller 11 connected to the leaking pipe. After receiving the information, the communication unit 19 in the communication controller 11 controls the warning light 20 on the outer pipe to light up. At this time, the lit warning light 20 indicates that oil and gas leakage has occurred in the pipe. By installing devices on multiple pipe sections respectively, the pipe section where the leakage occurs can be determined by the position where the warning light 20 lights up when leakage occurs in different pipe sections.

[0035] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. The protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An oil and gas pipeline leakage prevention safety warning device, characterized in that: The utility model comprises an inner pipe, a graphene sponge and an outer pipe, wherein the graphene sponge is wrapped on the inner pipe, symmetrical metal electrodes are arranged on the graphene sponge, electrode leads are connected to the metal electrodes, the outer side of the graphene sponge is covered with an insulating heat-conducting layer, a plurality of temperature sensors are arranged on the insulating heat-conducting layer along the axial direction of the inner pipe, the outer side of the insulating heat-conducting layer is wrapped with an insulating heat-insulating protective layer, the outer side of the insulating heat-insulating protective layer is wrapped with the outer pipe, the outer pipe comprises a first shell and a second shell, the first shell and the second shell are both fixedly connected with rubber pads, the first shell and the second shell are commonly connected with a fixing mechanism, a lead lock female port is provided on the outer pipe, the electrode leads and the leads of the temperature sensor are electrically connected to a communication controller through the lead lock female port, the communication controller is connected to a power communication bus, and is connected to a main power supply and a host computer through the power communication bus.

2. The oil and gas pipeline leakage prevention safety warning device according to claim 1 is characterized in that: The fixing mechanism includes a first fixing block, a second fixing block and bolts. A plurality of the first fixing blocks are fixedly connected to the first shell, a plurality of the second fixing blocks are fixedly connected to the second shell, the first fixing blocks are rotatably connected to the bolts, and the bolts are respectively threadedly connected to the second fixing blocks.

3. The oil and gas pipeline leakage prevention safety warning device according to claim 1 is characterized in that: The graphene sponge is a polyurethane sponge on which a reduced graphene coating is loaded.

4. The oil and gas pipeline leakage prevention safety warning device according to claim 1 is characterized in that: The insulating heat-conducting layer is mica paper, and the seams of the mica paper are covered with adhesive tape.

5. The oil and gas pipeline leakage prevention safety warning device according to claim 1 is characterized in that: The inner pipe is provided with symmetrical temperature sensors along the circumferential direction.

6. The oil and gas pipeline leakage prevention safety warning device according to claim 1 is characterized in that: The insulating and heat-preserving protective layer is a glass fiber tape or fireproof heat-preserving cotton soaked in silica gel liquid.

7. The oil and gas pipeline leakage prevention safety warning device according to claim 1 is characterized in that: The communication controller is internally provided with a temperature acquisition unit, a data processing unit and a communication unit. The input end of the temperature acquisition unit is connected to the lead of the temperature sensor of the inner pipe, the output end of the temperature acquisition unit is connected to the input end of the data processing unit, the data processing unit is respectively connected to the communication unit and the input end of the electrode lead, and the other end of the communication unit is connected to the power communication bus.

8. The oil and gas pipeline leakage prevention safety warning device according to claim 7 is characterized in that: The outer pipe is provided with a warning light, and the warning light is electrically connected to the communication unit.

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