A cathodic protection monitoring device for oil and gas pipelines

Abstract

The utility model relates to oil and gas pipeline technical field discloses a kind of cathodic protection monitoring devices for oil and gas pipeline, including oil and gas pipe and the monitoring pipe of being communicated and being equipped on oil and gas pipe, the top of monitoring pipe is equipped with sealing cover, and the rod body that is passed through sealing cover and can be up and down is equipped on sealing cover, the bottom of rod body is equipped with detachable screen box, the screen box is placed with the anode block of being sleeved on rod body, the top of rod body is sleeved with the spring that can drive rod body to move upwards;The top of monitoring pipe is equipped with detachable transparent cover, and the transparent cover is equipped with solar photovoltaic system and alarm, and the transparent cover is equipped with contact switch with adjustable position and being matched with rod body, solar photovoltaic system, alarm and contact switch are electrically connected.The utility model has the advantages compared with prior art: can be received to anode block drop piece, triggering device is equipped on the outside of monitoring pipe, and will not be affected by oil and gas.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas pipeline technology, specifically to a cathodic protection monitoring device for oil and gas pipelines. Background Technology

[0002] Oil and gas pipelines are generally protected against corrosion by applying anti-corrosion coatings to the outer walls, with some areas using sacrificial anode welding. The inner walls are usually left unprotected. However, the transported medium, containing water, sulfur, or other impurities, can easily cause perforation corrosion from the inside out during long-term operation.

[0003] Existing triggering devices either use springs to push the anode block upwards or use floats to move the anode block upwards. The triggering device activates an alarm to prompt the replacement of the anode block. However, both the springs and floats are located inside the monitoring pipe, making them susceptible to the influence of oil and gas transported by the pipeline. When the anode block needs to be replaced, the triggering device fails to activate the alarm in time, and the corroded anode block may fall into the oil and gas pipeline, affecting the safety of the pipeline. This needs to be improved. Utility Model Content

[0004] (I) Technical problems to be solved

[0005] The technical problem to be solved by this utility model is to overcome the above difficulties and provide a cathodic protection monitoring device for oil and gas pipelines that can receive anode block drops, has a triggering device located outside the monitoring tube, and is not affected by oil and gas.

[0006] (II) Technical Solution

[0007] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a cathodic protection monitoring device for oil and gas pipelines, including an oil and gas pipeline and a monitoring pipe connected to the oil and gas pipeline, the top of the monitoring pipe is provided with a sealing cover, the sealing cover is provided with a rod that penetrates the sealing cover and can move up and down, the bottom of the rod is provided with a detachable screen box, the screen box is provided with an anode block sleeved on the rod, and the top of the rod is sleeved with a spring that can drive the rod to move upward;

[0008] The top of the monitoring tube is equipped with a detachable transparent cover, on which a solar photovoltaic system and an alarm are installed. Inside the transparent cover is a position-adjustable contact switch that cooperates with the rod body. The solar photovoltaic system, the alarm and the contact switch are electrically connected.

[0009] As an improvement, a cylinder sleeved on the rod is fixed to the screen box, and a circular plate that abuts against the screen box is threaded to the bottom of the rod.

[0010] As an improvement, the sealing cover is provided with a through hole, and a sealing ring is provided in the through hole, with the rod body movably disposed within the sealing ring.

[0011] As an improvement, the top of the rod is provided with a plate that cooperates with the contact switch, and the bottom of the spring abuts against the sealing cover, while the top abuts against the plate.

[0012] As an improvement, the monitoring tube is provided with a flange, and the sealing cover and the flange are fastened together by a number of evenly arranged bolts.

[0013] As an improvement, a ring is provided on the outside of the flange, and the transparent cover is placed on the ring.

[0014] As an improvement, the top of the transparent cover is provided with a threaded cylinder, and a stud is provided inside the threaded cylinder, with the contact switch located on the stud.

[0015] (III) Beneficial Effects

[0016] The advantages of this utility model compared with the prior art are as follows:

[0017] 1. The anode block is placed inside the screen box. When the anode block is corroded and pieces fall off, the pieces can be caught by the screen box and will not fall into the oil and gas pipeline, thus affecting the safety of the oil and gas pipeline.

[0018] 2. The triggering device includes a rod, an anode block, a spring, and a contact switch. When the anode block is corroded and shrinks, the spring extends and drives the rod to move upward. The rod contacts the contact switch, and when the contact switch closes, the alarm sounds to remind people to replace the anode block.

[0019] 3. The solar photovoltaic system can provide power to the alarm, and the transparent cover can protect the spring, contact switch, etc., to prevent rainwater from affecting them. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 .

[0021] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 .

[0022] Figure 3 This is a top view of the structure of this utility model.

[0023] Figure 4 This is a utility model Figure 3 A schematic diagram of the structure in cross-section at point AA.

[0024] As shown in the figure: 1. Oil and gas pipe; 2. Monitoring pipe; 3. Sealing cover; 4. Rod; 5. Screen box; 6. Anode block; 7. Spring; 8. Transparent cover; 9. Solar photovoltaic system; 10. Alarm; 11. Contact switch; 12. Cylinder; 13. Circular plate; 14. Through hole; 15. Sealing ring; 16. Plate; 17. Flange; 18. Bolt; 19. Ring; 20. Threaded cylinder; 21. Stud. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0026] Example 1

[0027] Combined with appendix Figure 1-4 A cathodic protection monitoring device for oil and gas pipelines includes an oil and gas pipeline 1 and a monitoring pipe 2 connected to the oil and gas pipeline 1. The top of the monitoring pipe 2 is provided with a sealing cover 3. The sealing cover 3 is provided with a rod 4 that penetrates the sealing cover 3 and can move up and down. The bottom of the rod 4 is provided with a detachable screen box 5. An anode block 6 sleeved on the rod 4 is placed inside the screen box 5. The top of the rod 4 is sleeved with a spring 7 that can drive the rod 4 to move upward.

[0028] The top of the monitoring tube 2 is provided with a detachable transparent cover 8. The transparent cover 8 is provided with a solar photovoltaic system 9 and an alarm 10. Inside the transparent cover 8 is a position-adjustable contact switch 11 that cooperates with the rod body 4. The solar photovoltaic system 9, the alarm 10 and the contact switch 11 are electrically connected.

[0029] When the anode block 6 becomes lighter due to corrosion, the spring 7 extends and drives the rod 4 to move upward. The rod 4 contacts the contact switch 11, the contact switch 11 closes, and the alarm 10 sounds an alarm to remind personnel to replace the anode block 6.

[0030] The anode block 6 will fall into the screen box 5 and will not fall into the oil and gas pipe 1, so it will not affect the oil and gas pipe 1.

[0031] The screen box 5 is fixedly provided with a cylinder 12 sleeved on the rod 4. The bottom of the rod 4 is threadedly connected with a circular plate 13 that abuts against the screen box 5. The cylinder 12 can limit the screen box 5, making the screen box 5 more stable, and the circular plate 13 can support the screen box 5.

[0032] The sealing cover 3 is provided with a through hole 14, and a sealing ring 15 is provided in the through hole 14. The rod 4 is movably disposed in the sealing ring 15, and the sealing ring 15 can keep the sealing cover 13 and the rod 4 sealed.

[0033] The top of the rod 4 is provided with a plate 16 that cooperates with the contact switch 11. The bottom of the spring 7 abuts against the sealing cover 3, and the top abuts against the plate 16.

[0034] The monitoring tube 2 is provided with a flange 17, and the sealing cover 3 and the flange 17 are fastened together by a number of evenly arranged bolts 18.

[0035] The flange 17 is provided with a ring 19 on the outside, and the transparent cover 8 is placed on the ring 19. The inner wall of the transparent cover 8 is interference-fitted to the flange 17.

[0036] The top of the transparent cover 8 is provided with a threaded cylinder 20, and a stud 21 is provided inside the threaded cylinder 20. The contact switch 11 is located on the stud 21. When the operator rotates the stud 21, the stud 21 moves up and down inside the threaded cylinder 20, which can adjust the position of the contact switch 11. In turn, the distance between the rod 4 and the contact switch 11 can be adjusted, so that the device can be adapted to oil and gas pipes 1 with different pressures, making the device more precise.

[0037] The contact switch 11, solar photovoltaic system 9, and alarm 10 mentioned in this utility model, as well as their matching power supply and controller, can be provided by the manufacturer. Apart from that, the circuits, electronic components, and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon.

[0038] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, alterations, deletions of some features, additions of features, or recombinations of features to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the innovative principles of the present invention shall still fall within the scope of the technical solutions of the present invention.

Claims

1. A cathodic protection monitoring device for oil and gas pipelines, comprising an oil and gas pipeline and a monitoring pipe connected to the oil and gas pipeline, characterized in that: The top of the monitoring tube is provided with a sealing cover, and the sealing cover is provided with a rod that penetrates the sealing cover and can move up and down. The bottom of the rod is provided with a detachable screen box, and an anode block sleeved on the rod is placed inside the screen box. The top of the rod is sleeved with a spring that can drive the rod to move upward. The top of the monitoring tube is equipped with a detachable transparent cover, on which a solar photovoltaic system and an alarm are installed. Inside the transparent cover is a position-adjustable contact switch that cooperates with the rod body. The solar photovoltaic system, the alarm and the contact switch are electrically connected.

2. The cathodic protection monitoring device for oil and gas pipelines according to claim 1, characterized in that: The screen box is fixedly provided with a cylinder sleeved on the rod body, and the bottom of the rod body is threadedly connected with a circular plate that abuts against the screen box.

3. The cathodic protection monitoring device for oil and gas pipelines according to claim 1, characterized in that: The sealing cover has a through hole, and a sealing ring is provided inside the through hole. The rod is movably disposed inside the sealing ring.

4. The cathodic protection monitoring device for oil and gas pipelines according to claim 1, characterized in that: The top of the rod is provided with a plate that cooperates with the contact switch, and the bottom of the spring abuts against the sealing cover, while the top abuts against the plate.

5. The cathodic protection monitoring device for oil and gas pipelines according to claim 1, characterized in that: The monitoring tube is equipped with a flange, and the sealing cover and the flange are fastened together by a number of evenly arranged bolts.

6. The cathodic protection monitoring device for oil and gas pipelines according to claim 5, characterized in that: The flange has a ring on its outer side, and the transparent cover is placed on the ring.

7. The cathodic protection monitoring device for oil and gas pipelines according to claim 1, characterized in that: The top of the transparent cover is provided with a threaded cylinder, and a stud is provided inside the threaded cylinder. The contact switch is located on the stud.

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