Emptying pressure relief mechanism and gas production device thereof

Abstract

The utility model relates to the technical field of emptying and pressure relief, in particular to an emptying and pressure relief mechanism and a gas production device thereof, the emptying and pressure relief mechanism comprises a plug seat, the plug seat is provided with a plug cavity, and the bottom surface of the plug cavity is provided with a relief channel; the plug piece is in threaded connection with the plug cavity, a first channel hole, a second channel hole and a third channel hole are formed in the plug piece, the first channel hole is flush with the bottom face of the plug cavity, a plunger is arranged in the second channel hole in a sliding mode, a baffle is arranged on the side, extending into the plug cavity, of the plunger, and the baffle is in threaded connection with the first channel hole. And the third channel hole is aligned with the baffle plate. A double-channel pressure relief structure is formed, on-off control over the first channel hole and the third channel hole can be carried out according to the actual situation, different pressure relief effects are achieved, the pressure relief adjustment accuracy is improved, meanwhile, the emptying pressure relief mechanism can carry out manual pressure relief and can also carry out automatic remote pressure relief, use is more flexible, the pressure relief risk is reduced, and the practicability is high. The gas production device comprises a plurality of emptying and pressure relief mechanisms.

Description

Technical Field

[0001] This utility model relates to the field of venting and depressurization, specifically to a venting and depressurization mechanism and its gas sampling device. Background Technology

[0002] In the field of natural gas extraction, venting and depressurization are common safety measures to avoid safety accidents caused by excessive gas pressure inside pipelines or equipment. For example, pressure relief valves are usually installed on each branch pipeline of the gas tree at the natural gas wellhead for gas release operations. The pressure relief valves on existing gas trees and other equipment are generally manually operated, requiring manual rotation of the valve handle to perform the depressurization operation, and different depressurization pressures are achieved by manually controlling the valve opening.

[0003] However, there are numerous installation points for pressure relief valves, and manual pressure relief is time-consuming, labor-intensive, and poses safety hazards. In addition, inaccurate adjustment of the pressure relief can lead to large pressure fluctuations in pipelines or equipment, which can easily increase operational risks. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, which involves manually controlling the opening and closing of pressure relief valves to relieve pressure in pipelines or equipment. This is time-consuming, labor-intensive, and poses safety hazards. The present invention provides a venting and pressure relief mechanism and its gas sampling device.

[0005] In a first aspect, the present invention provides a venting and pressure relief mechanism, comprising:

[0006] A plug seat, wherein the plug seat has a plug cavity, and the bottom surface of the plug cavity has a discharge channel;

[0007] A plug is threadedly connected to the plug cavity. The plug has a first channel hole, a second channel hole, and a third channel hole. The first channel hole is aligned with the bottom surface of the plug cavity. A plunger is slidably disposed in the second channel hole. A baffle is provided on one side of the plunger that extends into the plug cavity. The third channel hole is aligned with the baffle.

[0008] This utility model discloses a venting and pressure relief mechanism. The first channel hole can be cut off by the plug fitting against the bottom surface of the plug cavity, and the third channel hole can be cut off by the baffle fitting against the bottom surface of the plug, forming a dual-channel pressure relief structure. The opening and closing of the first and third channel holes can be controlled according to the actual situation to achieve different pressure relief effects and improve the accuracy of pressure relief adjustment. At the same time, the plug can be easily moved relative to the plug seat to realize the opening and closing control of the first channel hole. The plunger can be automatically controlled by an external power mechanism to realize the opening and closing control of the third channel hole. This allows the venting and pressure relief mechanism to perform manual pressure relief or automatic remote pressure relief, making it more flexible to use and reducing the risk of pressure relief.

[0009] Preferably, the plug has a boss on the side near the bottom surface of the plug cavity, the boss being nested with the venting channel, and the third channel hole penetrating the end face of the boss near the plug cavity. This allows the plug to seal the venting channel through the boss, thereby improving the overall sealing performance of the venting and pressure relief mechanism.

[0010] Preferably, the plunger is connected to a telescopic mechanism.

[0011] Preferably, the telescopic mechanism is connected to a controller. The controller can perform manual operation and / or remote automatic control to drive the telescopic mechanism to move the plunger, thereby controlling the opening and closing of the third channel hole.

[0012] Preferably, a limit switch is provided between the baffle and the plug, and the limit switch is embedded in the plug or the baffle. This is to monitor the reset signal of the baffle or the plug, thereby realizing the status monitoring of the venting and depressurization mechanism.

[0013] Preferably, a first sealing gasket is provided between the baffle and the plug, and a second sealing gasket is provided between the plug and the bottom surface of the plug cavity. This improves the sealing performance and enhances the control effect of the opening and closing of the first and third channel holes.

[0014] Preferably, the plug is provided with a manifold channel, and the first channel hole and the second channel hole are respectively connected to the manifold channel. This allows the first channel hole and the second channel hole to release pressure through the manifold channel individually, or simultaneously.

[0015] Preferably, the plug is provided with an operating part to facilitate the adjustment of the relative position of the plug and the plug seat.

[0016] Preferably, the plug seat is provided with a connecting plate, and the connecting plate has several mounting holes to facilitate the connection and installation of the venting and pressure relief mechanism on existing equipment.

[0017] A gas extraction device includes several venting and depressurization mechanisms as described above.

[0018] The gas extraction device of this utility model, by adopting the above-mentioned venting and depressurization mechanism, can achieve dual-channel depressurization protection, and can be manually or remotely automatically controlled according to the actual situation, making the venting and depressurization operation of the gas extraction device more flexible.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. This utility model provides a venting and pressure relief mechanism, forming a dual-channel pressure relief structure, which can control the opening and closing of the first channel hole and the third channel hole according to the actual situation, so as to achieve different pressure relief effects and improve the accuracy of pressure relief adjustment;

[0021] 2. This utility model provides a venting and pressure relief mechanism. The plug can be moved relatively easily relative to the plug seat to realize the on / off control of the first channel hole. The plunger can be automatically controlled by an external power mechanism to realize the on / off control of the third channel hole. This allows the venting and pressure relief mechanism to perform manual pressure relief or automatic remote pressure relief, making it more flexible to use and reducing the risk of pressure relief.

[0022] 3. This utility model provides a gas extraction device. By adopting the above-mentioned venting and depressurization mechanism, it can achieve dual-channel depressurization protection and can be manually or remotely automatically controlled according to the actual situation, making the venting and depressurization operation of the gas extraction device more flexible. Attached Figure Description

[0023] Figure 1 This is a cross-sectional structural diagram of the plug and plunger assembly described in this utility model;

[0024] Figure 2 This is a cross-sectional structural diagram of a venting and depressurization mechanism in the blocked state in Example 1;

[0025] Figure 3 This is a cross-sectional structural diagram of a venting and depressurization mechanism with the first channel hole connected in Example 1;

[0026] Figure 4 This is a cross-sectional structural diagram of a venting and depressurization mechanism connected to the third channel hole in Example 1;

[0027] Figure 5 This is a cross-sectional structural diagram of a venting and depressurization mechanism in the fully open state in Example 1.

[0028] Marked in the image:

[0029] 1-Plug seat, 11-Plug cavity, 12-Release channel, 13-Connecting plate, 14-Mounting hole, 2-Plug, 21-First channel hole, 22-Second channel hole, 23-Third channel hole, 24-Boss, 25-Combination channel, 26-Operating part, 3-Plunger, 4-Baffle, 5-Telescopic mechanism, 6-Controller, 7-Limit switch, 8-First sealing gasket, 9-Second sealing gasket. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0031] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0033] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0034] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0035] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0036] Example 1

[0037] like Figures 1-5 As shown, a venting and pressure relief mechanism includes a plug seat 1, a plug 2, and a telescopic mechanism 5. The plug seat 1 has a plug cavity 11, and the bottom surface of the plug cavity 11 has a venting channel 12. The plug 2 is threadedly connected to the plug cavity 11. The plug 2 has a first channel hole 21, a second channel hole 22, and a third channel hole 23. The first channel hole 21 is aligned with the bottom surface of the plug cavity 11. A plunger 3 is slidably disposed in the second channel hole 22. A baffle 4 is provided on the side of the plunger 3 that extends into the plug cavity 11. The telescopic mechanism 5 is connected to the side of the plunger 3 away from the baffle 4. The third channel hole 23 is aligned with the baffle 4.

[0038] The plug seat 1 is the main body of the venting and pressure relief mechanism, used to connect with the pipeline or equipment to be depressurized, and communicates with the part to be depressurized through the venting channel 12, and provides a plug cavity 11 for cooperation with the plug 2.

[0039] In an optional embodiment, the plug seat 1 can be a cylindrical structural component, the plug cavity 11 can be a cylindrical concave cavity opened along the axial direction of the plug seat 1, the discharge channel 12 can be a channel structure coaxially communicating with the plug cavity 11, and the inner sidewall of the plug cavity 11 is provided with threads for connecting with the plug 2.

[0040] In one or more embodiments, the plug seat 1 may be provided with a connecting plate 13, and the connecting plate 13 has a plurality of mounting holes 14 to facilitate the connection and installation of the venting and pressure relief mechanism on existing equipment.

[0041] In an alternative implementation, the connecting plate 13 may be a flange.

[0042] In an optional embodiment, the connecting disc 13 and the plug seat 1 can be integrally formed structural components.

[0043] The plug 2 is a cylindrical structural component that is threaded into the plug cavity 11. The plug 2 provides an installation position for the plunger 3 by providing a second channel hole 22. The first channel hole 21 and the third channel hole 23 form a double pressure relief channel. When the plug 2 and the plug seat 1 are rotated relative to each other, the first channel hole 21 can be blocked when the plug 2 is in contact with the bottom of the plug cavity 11.

[0044] In an optional embodiment, the axial directions of the first channel hole 21, the second channel hole 22 and the third channel hole 23 can all be parallel to the axial direction of the plug cavity 11, that is, consistent with the direction of movement of the plug 2 relative to the plug cavity 11 when it is screwed in / out, and can all penetrate one end face of the plug 2 near the bottom surface of the plug cavity 11.

[0045] In an optional embodiment, the second channel hole 22 may be located at the center of the plug 2.

[0046] In an optional embodiment, the second channel hole 22 may also be located at a non-central position of the plug 2.

[0047] In one or more embodiments, the plug 2 may be provided with a manifold 25, with the first channel hole 21 and the second channel hole 22 respectively communicating with the manifold 25. This allows the first channel hole 21 and the second channel hole 22 to be depressurized through the manifold 25 respectively, or to be depressurized simultaneously from the manifold 25.

[0048] In an optional embodiment, the manifold 25 may penetrate the side wall or top of the plug 2 to facilitate pressure relief operation, prevent the pressure relief from affecting the adjustment of the venting and pressure relief mechanism, and facilitate pressure release from the manifold 25 during pressure relief.

[0049] In one or more embodiments, the plug 2 may have a boss 24 on one side near the bottom surface of the plug cavity 11. The boss 24 can be nested with the venting channel 12. The third channel hole 23 penetrates the end face of the boss 24 near the bottom of the plug cavity 11, so that the plug 2 can block the venting channel 12 through the boss 24, thereby improving the overall sealing performance of the venting and pressure relief mechanism. When the plug 2 is in contact with the bottom of the plug cavity 11, the boss 24 extends into the venting channel 12 and forms a contact line with the venting channel 12.

[0050] In an optional embodiment, the boss 24 can be a frustum-shaped protrusion structure with a guiding function, which can more easily align with the discharge channel 12 and extend into the discharge channel 12, and can form a stable contact with the discharge channel 12 through its gradually changing size, thereby improving the sealing effect.

[0051] The plunger 3 can be a structural component that moves coaxially with the second channel hole 22. One end of the plunger 3 extends out of the plug 2 and is close to the plug cavity 11. A baffle 4 is provided on this side. The baffle 4 can be offset from the bottom surface of the plug cavity 11. By moving the plunger 3 along the second channel hole 22, the relative position of the baffle 4 and the plug 2 can be changed. When the baffle 4 and the plug 2 are in contact, the third channel hole 23 can be blocked.

[0052] In an optional embodiment, the plunger 3 may be a cylindrical structural component.

[0053] In an alternative embodiment, the plunger 3 may also be a columnar structure with a polygonal cross-section.

[0054] The telescopic mechanism 5 is connected to the plunger 3 and is used to move the plunger 3 to adjust the relative position of the upper baffle 4 and the plug 2, thereby realizing the on / off control of the third channel hole 23.

[0055] In an optional implementation, the telescopic mechanism 5 may be an electric telescopic cylinder.

[0056] In an optional embodiment, the electric telescopic cylinder can be connected to the plunger 3 by extending the piston rod into the second channel hole 22, and drive the plunger 3 to move during the telescopic action.

[0057] In an optional implementation, the telescopic mechanism 5 can be remotely telescopically controlled by a remote controller 6 to achieve remote pressure relief.

[0058] In one or more embodiments, a limit switch 7 is provided between the baffle 4 and the plug 2, and the limit switch 7 is embedded in the plug 2 or the baffle 4. This is to monitor the reset signal of the baffle 4 or the plug 2, thereby realizing the status monitoring of the venting and depressurization mechanism.

[0059] In an optional embodiment, the limit switch 7 is embedded in a groove on the end face of the plug 2.

[0060] In one or more embodiments, a first sealing gasket 8 may be provided between the baffle 4 and the plug 2, and a second sealing gasket 9 may be provided between the plug 2 and the bottom surface of the plug cavity 11. This improves the sealing performance and enhances the on / off control effect of the first channel hole 21 and the third channel hole 23.

[0061] In an optional embodiment, the first sealing gasket 8 and the second sealing gasket 9 may be annular rubber gaskets.

[0062] In one or more embodiments, the plug 2 may be provided with an operating part 26 to facilitate the adjustment of the relative position of the plug 2 and the plug seat 1.

[0063] In an optional embodiment, the operating part 26 may be a hexagonal protrusion structure provided on the outer wall of the plug 2, so as to facilitate the adjustment of the relative position of the plug 2 and the plug seat 1 by means of tools such as wrenches, so as to realize pressure relief adjustment.

[0064] This embodiment of a venting and pressure relief mechanism, when in use, such as... Figure 2 As shown, the telescopic mechanism 5 drives the baffle 4 to fit against the end face of the plug 2, thus closing the third channel hole 23. The end face of the plug 2 fits against the bottom surface of the plug cavity 11, thus closing the first channel hole 21. Figure 3 As shown, by rotating the plug 2 and the plug seat 1 relative to each other, the plug 2 moves along the plug cavity 11, and the first channel hole 21 communicates with the plug cavity 11, and then with the relief channel 12, so that the pressure at the relief channel 12 is released to the outside of the plug 2 along the first channel hole 21, as shown. Figure 4 As shown, by adjusting the baffle 4 away from the plug 2 through the telescopic mechanism 5, the third channel hole 23 is connected to the plug cavity 11, so that the pressure is released along the third channel hole 23, as shown. Figure 5 As shown, when there is a distance between the plug 2 and the plug cavity 11, and a distance between the baffle 4 and the plug 2, the venting channel 12 can simultaneously vent pressure through the first channel hole 21 and the third channel hole 23.

[0065] This embodiment of a venting and pressure relief mechanism, by forming a dual-channel pressure relief structure, can control the opening and closing of the first channel hole 21 and the third channel hole 23 according to the actual situation, achieving different pressure relief effects and improving the accuracy of pressure relief adjustment. At the same time, the plug 2 can be easily moved relative to the plug seat 1 to realize the opening and closing control of the first channel hole 21. The plunger 3 can be automatically controlled by an external power mechanism to realize the opening and closing control of the third channel hole 23. This allows the venting and pressure relief mechanism to perform manual pressure relief or automatic remote pressure relief, making it more flexible to use and reducing the risk of pressure relief.

[0066] Example 2

[0067] A gas extraction device includes several venting and depressurization mechanisms as described above.

[0068] The gas extraction device of this embodiment, by adopting the above-mentioned venting and depressurization mechanism, can achieve dual-channel depressurization protection, and can be manually or remotely automatically controlled according to the actual situation, making the venting and depressurization operation of the gas extraction device more flexible.

[0069] In an optional implementation, the gas sampling device can be a gas sampling tree, a gas storage tank, a liquid storage tank, or other structural equipment that requires pressure relief operations.

[0070] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A venting and pressure relief mechanism, characterized in that, include: A plug seat (1) is provided with a plug cavity (11), and a discharge channel (12) is provided on the bottom surface of the plug cavity (11); A plug (2) is threadedly connected to the plug cavity (11). The plug (2) is provided with a first channel hole (21), a second channel hole (22) and a third channel hole (23). The first channel hole (21) is aligned with the bottom surface of the plug cavity (11). A plunger (3) is slidably disposed in the second channel hole (22). A baffle (4) is provided on the side of the plunger (3) that extends into the plug cavity (11). The third channel hole (23) is aligned with the baffle (4).

2. The venting and pressure relief mechanism according to claim 1, characterized in that, The plug (2) has a boss (24) on one side near the bottom surface of the plug cavity (11). The boss (24) is nested with the discharge channel (12). The third channel hole (23) penetrates the end face of the boss (24) near the plug cavity (11).

3. The venting and pressure relief mechanism according to claim 1, characterized in that, The plunger (3) is connected to the telescopic mechanism (5).

4. The venting and pressure relief mechanism according to claim 3, characterized in that, The telescopic mechanism (5) is connected to the controller (6).

5. The venting and pressure relief mechanism according to claim 4, characterized in that, A limit switch (7) is provided between the baffle (4) and the plug (2), and the limit switch (7) is embedded in the plug (2) or the baffle (4).

6. The venting and pressure relief mechanism according to claim 5, characterized in that, A first sealing gasket (8) is provided between the baffle (4) and the plug (2), and a second sealing gasket (9) is provided between the plug (2) and the bottom surface of the plug cavity (11).

7. The venting and pressure relief mechanism according to claim 1, characterized in that, The plug (2) is provided with a confluence channel (25), and the first channel hole (21) and the second channel hole (22) are respectively connected to the confluence channel (25), and the confluence channel (25) passes through the plug (2).

8. The venting and pressure relief mechanism according to claim 7, characterized in that, The plug (2) is provided with an operating part (26).

9. A venting and pressure relief mechanism according to claim 8, characterized in that, The plug seat (1) is provided with a connecting plate (13), and the connecting plate (13) is provided with a plurality of mounting holes (14).

10. A gas extraction device, characterized in that, Includes the venting and depressurization mechanism as described in any one of claims 1-9.

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