Recovery device for gas diffused by natural gas pipeline

Abstract

The utility model provides a natural gas pipeline diffused gas recovery device, which belongs to the technical field of natural gas pipelines and comprises a recovery tank body, a sealing plate and a guide structure. A communicating hole is formed in the top of the recycling tank; the sealing plate is arranged in the recycling tank body, the outer peripheral wall of the sealing plate is in sealing fit with the inner peripheral wall of the recycling tank body, and the sealing plate is in sliding fit with the recycling tank body; the guide structure is connected to the top of the sealing plate; the guide structure is in sliding fit with the recovery tank body; wherein an air inlet is formed in the position, close to the bottom, of the recycling tank body and communicates with the diffusing pipe through a pipeline; a plurality of gas outlet pipes are arranged on the peripheral wall of the recovery tank body; valves are arranged on pipelines of the gas outlet pipes and the gas inlet; and after the diffused fuel gas is recycled into the recycling tank body, the stored fuel gas can be introduced into a gas storage bottle or other gas equipment through the gas outlet pipe, so that the waste of the diffused fuel gas is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of natural gas pipelines, and in particular relates to a gas recovery device for natural gas pipelines. Background Art

[0002] The vent pipe is an important device in the gas pipeline. It is usually placed at high points, low points, corners, closed places and other locations of the gas pipeline system to discharge the pressure and gas inside the pipeline to ensure the normal operation of the pipeline. In the prior art, the gas discharged through the vent pipe is directly discharged into the atmosphere, which will not only cause waste of the vented gas, but also pollute the environment. Utility Model Content

[0003] The embodiment of the utility model provides a natural gas pipeline vented gas recovery device, which aims to solve the technical problem in the prior art that direct discharge of vented gas will cause gas waste and environmental pollution.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] Provided is a natural gas pipeline vented gas recovery device, comprising:

[0006] A recovery tank body having a connecting hole at the top;

[0007] A sealing plate is arranged in the recovery tank body, the outer peripheral wall of the sealing plate is sealed with the inner peripheral wall of the recovery tank body, and the sealing plate is slidably matched with the recovery tank body;

[0008] A guide structure connected to the top of the sealing plate; the guide structure is slidably matched with the recovery tank body;

[0009] Among them, the recovery tank body has an air inlet near the bottom, and the air inlet is connected to the venting pipe through a pipeline; the outer wall of the recovery tank body has a plurality of air outlet pipes, and valves are arranged on the air outlet pipes and the air inlet pipes.

[0010] In a possible implementation, the bottom of the recovery tank body has a plurality of support columns, and the support columns are used to contact the bottom of the sealing plate to form an initial space; the air inlet and the air outlet pipe are both connected to the initial space.

[0011] In a possible implementation, a guide sleeve is connected to the top of the recovery tank, and the guide structure includes:

[0012] A guide shaft, one end of which is connected to the top of the sealing plate and the other end of which is slidably matched with the guide sleeve;

[0013] A connecting rope, one end of which is connected to the guide sleeve, and the other end of which is connected to the guide shaft;

[0014] Wherein, when the sealing plate contacts the supporting column, the top end of the guide shaft is located in the guide sleeve, and the connecting rope provides a pulling force to the guide shaft.

[0015] In a possible implementation, the guide shaft is provided with a plurality of threaded holes along its axial direction, the other end of the connecting rope is connected with a bolt, and the bolt is threadably matched with one of the threaded holes.

[0016] In a possible implementation, the top of the recovery tank body has a cover body, the cover body is detachably connected to the recovery tank body, and the communication hole is provided on the cover body.

[0017] In a possible implementation, the outer circumferential wall of the sealing plate has an annular groove, a sealing ring is provided in the annular groove of the sealing plate, the diameter of the sealing ring is greater than the depth of the annular groove, and the sealing ring is used to contact the inner circumferential wall of the recovery tank body.

[0018] In a possible implementation, the recovery tank has a water inlet pipe at the position of the initial space, and a valve is provided on the water inlet pipe;

[0019] The water inlet pipe is close to the bottom of the recovery tank body, the air outlet pipe is close to the bottom of the sealing plate, and the air inlet is close to the bottom of the sealing plate; in the initial state, the initial space is filled with liquid.

[0020] In a possible implementation, the bottom of the recovery tank has an inclination, and the water inlet pipe is located at the lowest position; the water inlet pipe is made of a light-transmitting material.

[0021] In a possible implementation, the outer end of the air outlet pipe is bent upward, and the air outlet pipe is made of a light-transmitting material.

[0022] In a possible implementation, the bottom of the recovery tank has a support seat.

[0023] Compared with the prior art, the utility model provides a natural gas pipeline release gas recovery device. When the excess gas needs to be released, the excess gas is introduced into the recovery tank body, and the gas accumulates at the bottom of the recovery tank body. When the air pressure at the bottom of the recovery tank body increases, the sealing plate can be pushed to move upward; because a connecting hole is provided at the top of the recovery tank body, the sealing plate will not increase the air pressure in the upper space of the recovery tank body during the upward movement. By providing a guide structure, the deflection of the sealing plate can be reduced; after the released gas is recovered into the recovery tank body, the stored gas can be introduced into the gas storage bottle or other gas-using equipment through the gas outlet pipe, thereby reducing the waste of released gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of a natural gas pipeline vented gas recovery device provided by an embodiment of the utility model;

[0025] Figure 2 A cross-sectional view of a natural gas pipeline vented gas recovery device provided by an embodiment of the utility model;

[0026] Figure 3 for Figure 2 The enlarged schematic diagram of the middle A part;

[0027] Figure 4 A schematic diagram of a sealing plate portion of a natural gas pipeline vented gas recovery device provided in an embodiment of the utility model.

[0028] Explanation of the reference numerals: 1. Recovery tank body; 11. Connecting hole; 12. Air inlet; 13. Air outlet pipe; 14. Support column; 15. Cover body; 16. Water inlet pipe; 17. Support seat; 2. Closing plate; 3. Guide structure; 31. Guide sleeve; 32. Guide shaft; 321. Threaded hole; 33. Connecting rope; 34. Bolt. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] Please also read Figures 1 to 4 , a natural gas pipeline release gas recovery device provided by the utility model is now described. The natural gas pipeline release gas recovery device comprises a recovery tank body 1, a sealing plate 2 and a guide structure 3; the top of the recovery tank body 1 has a connecting hole 11; the sealing plate 2 is arranged in the recovery tank body 1, the outer peripheral wall of the sealing plate 2 is sealed with the inner peripheral wall of the recovery tank body 1, and the sealing plate 2 is slidingly matched with the recovery tank body 1; the guide structure 3 is connected to the top of the sealing plate 2; the guide structure 3 is slidingly matched with the recovery tank body 1; wherein, the recovery tank body 1 has an air inlet 12 near the bottom, and the air inlet 12 is connected to the release pipe through a pipeline; the outer peripheral wall of the recovery tank body 1 has a plurality of air outlet pipes 13, and valves are arranged on the air outlet pipes 13 and the air inlet 12. In the attached drawings of this embodiment, one air outlet pipe 13 is used as an example for description.

[0031] Compared with the prior art, the utility model provides a natural gas pipeline release gas recovery device. When it is necessary to release excess gas, the excess gas is introduced into the recovery tank body 1, and the gas accumulates at the bottom of the recovery tank body 1. When the air pressure at the bottom of the recovery tank body 1 increases, the sealing plate 2 can be pushed to move upward; since the connecting hole 11 is provided at the top of the recovery tank body 1, the sealing plate 2 will not increase the air pressure in the upper space of the recovery tank body 1 during the upward movement. By providing a guide structure 3, the deflection of the sealing plate 2 can be reduced; after the released gas is recovered into the recovery tank body 1, the stored gas can be introduced into a gas storage bottle or other gas-using equipment through the gas outlet pipe 13, thereby reducing the waste of released gas.

[0032] In some embodiments, Figures 1 to 4 As shown, the bottom of the recovery tank body 1 has a plurality of support columns 14, and the support columns 14 are used to contact with the bottom of the sealing plate 2 to form an initial space; the air inlet 12 and the air outlet pipe 13 are both connected to the initial space.

[0033] It should be noted that by arranging the support column 14 in the recovery tank body 1, the sealing plate 2 can be supported to avoid the sealing plate 2 from contacting the bottom of the recovery tank body 1; through the above arrangement, the diffused gas can enter the initial space and gather in the initial space.

[0034] In some embodiments, Figures 1 to 4 As shown, a guide sleeve 31 is connected to the top of the recovery tank body 1, and the guide structure 3 includes a guide shaft 32 and a connecting rope 33; one end of the guide shaft 32 is connected to the top of the sealing plate 2, and the other end is slidably matched with the guide sleeve 31; one end of the connecting rope 33 is connected to the guide sleeve 31, and the other end is connected to the guide shaft 32; wherein, when the sealing plate 2 contacts the support column 14, the top end of the guide shaft 32 is located in the guide sleeve 31, and the connecting rope 33 provides tension to the guide shaft 32.

[0035] It should be noted that the guide sleeve 31 is arranged inside the recovery tank 1, and the bottom end of the guide shaft 32 is fixed on the sealing plate 2; the guide shaft 32 and the guide sleeve 31 slide together to guide the sliding direction of the sealing plate 2, thereby reducing the deviation of the sealing plate 2. The guide sleeve 31 and the guide shaft 32 are connected by a connecting rope 33. When the sealing plate 2 is at the lowest position, the connecting rope 33 can lift the sealing plate 2, reduce the separation of the guide shaft 32 and the guide sleeve 31, and also reduce the impact of the sealing plate 2 on the support column 14.

[0036] In some embodiments, Figures 1 to 4 As shown, a plurality of threaded holes 321 are provided on the guide shaft 32 along its axial direction, and a bolt 34 is connected to the other end of the connecting rope 33 , and the bolt 34 is threadably matched with one of the threaded holes 321 .

[0037] It should be noted that by selecting threaded holes 321 at different positions, the height of the connection position of the bolt 34 can be selected, and then the lowest position of the sealing plate 2 can be selected according to actual conditions.

[0038] In some embodiments, Figures 1 to 4 As shown, the top of the recovery tank body 1 is provided with a cover body 15 , and the cover body 15 is detachably connected to the recovery tank body 1 .

[0039] It should be noted that the outer peripheral wall of the top of the recovery tank body 1 has an external thread, the bottom of the cover body 15 has a receiving hole, the inner peripheral wall of the receiving hole has an internal thread, and the cover body 15 is threadedly matched with the recovery tank body 1.

[0040] In some embodiments, Figures 1 to 4 As shown, the outer peripheral wall of the sealing plate 2 has an annular groove, and a sealing ring is arranged in the annular groove of the sealing plate 2. The diameter of the sealing ring is greater than the depth of the annular groove, and the sealing ring is used to contact the inner peripheral wall of the recovery tank body 1.

[0041] It should be noted that by providing a sealing ring on the outer peripheral wall of the sealing plate 2, the sealing performance between the sealing plate 2 and the inner peripheral wall of the recovery tank body 1 can be improved, thereby reducing the occurrence of gas leakage. Specifically, since the sealing ring contacts the inner peripheral wall of the recovery tank body 1, the sealing performance at this location can be increased.

[0042] In some embodiments, Figures 1 to 4 As shown, the recovery tank body 1 has a water inlet pipe 16 at the position of the initial space, and a valve is provided on the water inlet pipe 16; the water inlet pipe 16 is close to the bottom of the recovery tank body 1, the air outlet pipe 13 is close to the bottom of the sealing plate 2, and the air inlet 12 is close to the bottom of the sealing plate 2; in the initial state, the initial space is filled with liquid.

[0043] It should be noted that the liquid filled in the initial space cannot react with the gas; by filling the initial space with liquid, the gas in the initial space can be discharged; after the diffused gas is introduced into the initial space, the water inlet pipe 16 is opened to allow the liquid to be discharged from the water inlet pipe 16; after the preset volume of liquid is discharged, the water inlet pipe 16 is closed; through the above-mentioned settings, the air mixed in the gas can be reduced.

[0044] Specifically, when injecting liquid, close the air inlet 12, open the water inlet pipe 16 and one of the air outlet pipes 13, and when liquid flows out of the air outlet pipe 13, it means that the initial space is full of liquid, and then close the air outlet pipe 13 and the water inlet pipe 16.

[0045] In some embodiments, Figures 1 to 4As shown, the bottom of the recovery tank body 1 has an inclination, and the water inlet pipe 16 is located at the lowest position; the water inlet pipe 16 is made of a light-transmitting material; the outer end of the air outlet pipe 13 is bent upward, the bent part is not shown in the accompanying drawings, and the air outlet pipe 13 is made of a light-transmitting material; the bottom of the recovery tank body 1 has a support seat 17.

[0046] It should be noted that since the water inlet pipe 16 and the air outlet pipe 13 are both made of light-transmitting materials, it is convenient for the operator to observe the liquid discharge situation; by bending the outer end of the air outlet pipe 13 upward, when the liquid flows into the horizontal part of the air outlet pipe, the direct outflow from the horizontal part can be reduced; the support seat 17 at the bottom of the recovery tank body 1 can support the recovery tank body 1.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A natural gas pipeline vented gas recovery device, characterized in that: include: A recovery tank body having a connecting hole at the top; A sealing plate is arranged in the recovery tank body, the outer peripheral wall of the sealing plate is sealed with the inner peripheral wall of the recovery tank body, and the sealing plate is slidably matched with the recovery tank body; A guide structure connected to the top of the sealing plate; the guide structure is slidably matched with the recovery tank body; Among them, the recovery tank body has an air inlet near the bottom, and the air inlet is connected to the venting pipe through a pipeline; the outer wall of the recovery tank body has a plurality of air outlet pipes, and valves are arranged on the air outlet pipes and the air inlet pipes.

2. A natural gas pipeline vented gas recovery device as claimed in claim 1, characterized in that: The bottom of the recovery tank body is provided with a plurality of support columns, and the support columns are used to contact with the bottom of the sealing plate to form an initial space; the air inlet and the air outlet pipe are both connected with the initial space.

3. A natural gas pipeline vented gas recovery device as claimed in claim 2, characterized in that: A guide sleeve is connected to the top of the recovery tank, and the guide structure includes: A guide shaft, one end of which is connected to the top of the sealing plate and the other end of which is slidably matched with the guide sleeve; A connecting rope, one end of which is connected to the guide sleeve, and the other end of which is connected to the guide shaft; Wherein, when the sealing plate contacts the supporting column, the top end of the guide shaft is located in the guide sleeve, and the connecting rope provides a pulling force to the guide shaft.

4. A natural gas pipeline vented gas recovery device as claimed in claim 3, characterized in that: The guide shaft is provided with a plurality of threaded holes along its axial direction, and the other end of the connecting rope is connected with a bolt, and the bolt is threadably matched with one of the threaded holes.

5. A natural gas pipeline vented gas recovery device as claimed in claim 2, characterized in that: The top of the recovery tank body is provided with a cover body, the cover body is detachably connected to the recovery tank body, and the communication hole is arranged on the cover body.

6. A natural gas pipeline vented gas recovery device as claimed in claim 1, characterized in that: The outer peripheral wall of the sealing plate has an annular groove, and a sealing ring is arranged in the annular groove of the sealing plate. The diameter of the sealing ring is greater than the depth of the annular groove, and the sealing ring is used to contact the inner peripheral wall of the recovery tank body.

7. A natural gas pipeline vented gas recovery device as claimed in claim 2, characterized in that: The recovery tank has a water inlet pipe at the position of the initial space, and a valve is provided on the water inlet pipe; The water inlet pipe is close to the bottom of the recovery tank body, the air outlet pipe is close to the bottom of the sealing plate, and the air inlet is close to the bottom of the sealing plate; in the initial state, the initial space is filled with liquid.

8. A natural gas pipeline vented gas recovery device as claimed in claim 7, characterized in that: The bottom of the recovery tank body has an inclination, and the water inlet pipe is located at the lowest position; the water inlet pipe is made of a light-transmitting material.

9. A natural gas pipeline vented gas recovery device as claimed in claim 7, characterized in that: The outer end of the air outlet pipe is bent upward, and the air outlet pipe is made of a light-transmitting material.

10. A natural gas pipeline vented gas recovery device as claimed in claim 1, characterized in that: The bottom of the recovery tank is provided with a support seat.

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