A dehydration valve

Abstract

This utility model discloses a dehydration valve, including a valve body. The valve body contains a valve seat fixedly connected to the valve body and a valve plate movably connected to the valve body. A fixed handle is provided outside the valve body, and a movable handle is rotatably connected to the fixed handle. The valve plate is connected to the movable handle via a valve stem, with one end of the valve stem near the movable handle passing through the valve body and connecting to the movable handle. A valve plate self-closing assembly is provided inside the valve body, including a spring sleeved on the valve stem. This utility model, by setting a pressure-type operating handle, requires continuous pressure on the movable handle to open the valve. When the operator releases the movable handle, the spring inside the valve immediately presses against the valve stem and valve plate, closing the valve. This prevents the valve from remaining open after the operator leaves.

Description

Technical Field

[0001] This utility model relates to the field of oil refining and chemical industry, specifically a dehydration valve. Background Technology

[0002] In oil refining and chemical production and storage facilities, the containers often contain moisture. After sedimentation and separation, this moisture must be removed to prevent subsequent production fluctuations and product quality issues. Because water is denser than the oil and gas components in the container, a dehydration line is typically installed at the bottom of the container, usually fitted with a gate valve or shut-off valve. The valve is manually opened for dehydration, and then manually closed after dehydration is complete.

[0003] However, in recent years, a number of safety accidents caused by dehydration operations have occurred. Specifically, after the dehydration valve is manually opened, the operator may leave their post to handle other matters. As a result, the dehydration process ends, and the dehydration valve is not closed in time. This causes the oil and gas components in the container to be discharged into the downstream water storage tank or pool, leading to excessive pressure or even oil and gas leakage into the atmosphere, resulting in safety accidents such as container overpressure, fire, and explosion. Utility Model Content

[0004] The purpose of this invention is to provide a dehydration valve to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A dehydration valve includes a valve body, a valve seat fixedly connected to the valve body and a valve plate movably connected to the valve body, a fixed handle externally provided on the valve body, a movable handle rotatably connected to the fixed handle, the valve plate being connected to the movable handle via a valve stem, and one end of the valve stem near the movable handle passing through the valve body and being connected to the movable handle. The valve body is provided with a valve plate self-closing assembly, which includes a spring sleeved on the valve stem. One end of the spring is fixedly connected to the valve stem, and the other end of the spring is fixedly connected to the inner wall of the valve body.

[0006] As a further embodiment of this utility model: the movable handle is rotatably connected to the fixed handle via a handle pivot.

[0007] As a further embodiment of this utility model: a groove parallel to the length direction of the movable handle is provided in the middle of the movable handle, and the upper end of the valve stem is slidably connected to the groove of the movable handle through a valve stem connecting pin.

[0008] As a further embodiment of this utility model: a sealing assembly is provided on the valve body, and the valve stem is slidably and sealingly connected to the valve body through the sealing assembly.

[0009] As a further embodiment of this utility model: the sealing assembly includes a valve cover fixedly connected to the valve body, a sealing cylinder connected to the outside of the valve cover, and a sealing seat, packing, packing sleeve, and packing pressure plate arranged sequentially inside the sealing cylinder, and the valve stem passes through the valve cover, sealing seat, packing, packing sleeve, and packing pressure plate.

[0010] As a further embodiment of this utility model: the valve cover is fixedly connected to the valve body through a connector, and the packing pressure plate is fixedly connected to the sealing cylinder through a connector, wherein the connector is a bolt and nut.

[0011] As a further embodiment of this utility model: an upper fixing plate is provided inside the valve body, the upper fixing plate is located below the valve cover, the upper fixing plate is fixedly connected to the valve body, the upper fixing plate is fixedly connected to the spring, a lower fixing plate is fixedly connected to the valve stem, and the upper end of the lower fixing plate is fixedly connected to the spring.

[0012] As a further embodiment of this utility model: a valve plate is installed at the lower end of the valve stem, and a sealing surface is installed on the valve plate.

[0013] Compared with existing technologies, the beneficial effects of this utility model are as follows: By setting a pressure-type operating handle, the valve needs to be continuously pressed up to open. When the operator releases the handle, the valve's built-in spring immediately presses the valve stem and valve plate, closing the valve. This prevents the valve from remaining open after personnel leave. This also avoids the continuous leakage of oil and gas components into the downstream low-pressure equipment atmosphere after the water in the container has evaporated, thus preventing fire and explosion accidents. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the drainage device structure in this embodiment; In the diagram: 1-Fixed handle, 2-Modible handle, 3-Handle shaft, 4-Valve stem connecting pin, 5-First packing pressure plate, 6-Second packing pressure plate, 7-Packing, 8-Sealing seat, 9-Valve cover, 10-Upper fixing sleeve, 11-Spring, 12-Lower fixing sleeve, 13-Valve stem, 14-Valve stem plate, 15-Valve plate, 16-Valve seat, 17-Valve body, 18-Connecting piece. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1 In this embodiment of the utility model, a dehydration valve includes a valve body 17. A valve seat 16 fixedly connected to the valve body 17 and a valve plate 15 movably connected to the valve body 17 are disposed inside the valve body 17. The contact surface between the valve plate 15 and the valve seat 16 is a sealing surface. The sealing surface has a certain inclination angle. In this embodiment, the inclination angle of the sealing surface is about 70-80 degrees. Even if the sealing surface is worn due to solid impurities carried by the water flow or the diameter of the sealing surface is reduced, the valve plate can be continuously pressed down by the elasticity of the spring to maintain good contact between the sealing surfaces and achieve sealing.

[0017] A fixed handle 1 is provided on the outside of the valve body 17. A movable handle 2 is rotatably connected to the fixed handle 1. The movable handle 2 is rotatably connected to the fixed handle 1 through a handle shaft 3. A sliding groove parallel to the length direction of the movable handle 2 is provided in the middle of the movable handle 2. The upper end of the valve stem 13 is slidably connected to the sliding groove of the movable handle 2 through a valve stem connecting pin 4. The movable handle and the valve stem are connected by a fixed pin, and a rectangular sliding groove is provided to match the fixed pin. This ensures that when the movable handle pulls the valve plate up and down, the valve stem always moves along the same vertical axis, avoiding the valve stem from moving left and right and damaging the valve body's seals.

[0018] The valve plate 15 is connected to the movable handle 2 via the valve stem 13. One end of the valve stem 13 near the movable handle 2 passes through the valve body 17 and is connected to the movable handle 2. A valve plate self-closing assembly is provided inside the valve body 17. The valve plate self-closing assembly includes a spring 11 sleeved on the valve stem 13. One end of the spring 11 is fixedly connected to the valve stem 13, and the other end of the spring 11 is fixedly connected to the inner wall of the valve body 17. An upper fixing plate 10 is provided inside the valve body 17. The upper fixing plate is located below the valve cover 9. The upper fixing plate 10 is fixedly connected to the valve body 17 and to the spring 11. A lower fixing plate 12 is fixedly connected to the valve stem 13. The upper end of the lower fixing plate 12 is fixedly connected to the spring 11. A valve plate 14 is installed at the lower end of the valve stem 13. A sealing surface 15 is installed on the valve plate 14.

[0019] A sealing assembly is provided on the valve body 17. The valve stem 13 is slidably and sealingly connected to the valve body 17 through the sealing assembly. The sealing assembly includes a valve cover 9 fixedly connected to the valve body 17. A sealing cylinder is connected to the outside of the valve cover 9. A sealing seat 8, packing 7, packing sleeve 6, and packing pressure plate 5 are arranged sequentially inside the sealing cylinder. The valve stem 13 passes through the valve cover 9, sealing seat 8, packing 7, packing sleeve 6, and packing pressure plate 5. The valve cover 9 is fixedly connected to the valve body 17 through a connector 18. The packing pressure plate 5 is fixedly connected to the sealing cylinder through the connector 18. The connector 18 uses bolts and nuts. In this embodiment, the sealing assembly has a packing cover at the top and a sealing seat at the bottom. The packing is compressed and sealed by tightening the bolts of the top packing pressure plate.

[0020] In this embodiment, during use, the operator places their hand on the fixed handle, grips the movable handle firmly with their palm and fingers, and pulls upwards on the valve stem and valve plate to open the valve and initiate dehydration. After the operator releases the handle, the valve's internal spring immediately presses the valve stem and valve plate shut, closing the valve. This structural design prevents the valve from failing to close promptly after the operator leaves the room. This avoids the continuous leakage of oil and gas components into the downstream low-pressure equipment's atmosphere after the water in the container has been completely dehydrated, thus preventing fire and explosion accidents. It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims. Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A dehydrating valve comprising a valve body (17), characterized in that, The valve body (17) is provided with a valve seat (16) fixedly connected to the valve body (17) and a valve plate (15) movably connected to the valve body (17). A fixed handle (1) is provided on the outside of the valve body (17). A movable handle (2) is rotatably connected to the fixed handle (1). The valve plate (15) is connected to the movable handle (2) through a valve stem (13). One end of the valve stem (13) near the movable handle (2) passes through the valve body (17) and is connected to the movable handle (2). The valve body (17) is provided with a valve plate self-closing assembly, which includes a spring (11) sleeved on the valve stem (13). One end of the spring (11) is fixedly connected to the valve stem (13), and the other end of the spring (11) is fixedly connected to the inner wall of the valve body (17).

2. A dehydrating valve according to claim 1, wherein The movable handle (2) is rotatably connected to the fixed handle (1) via the handle pivot (3).

3. A dehydrator valve according to claim 1, wherein The movable handle (2) has a groove in the middle that is parallel to the length of the movable handle (2), and the upper end of the valve stem (13) is slidably connected to the groove of the movable handle (2) through the valve stem connecting pin (4).

4. A dehydrator valve according to claim 1 wherein, A sealing assembly is provided on the valve body (17), and the valve stem (13) is slidably and sealingly connected to the valve body (17) through the sealing assembly.

5. A dehydrating valve according to claim 4, wherein The sealing assembly includes a valve cover (9) fixedly connected to the valve body (17). A sealing cylinder is connected to the outside of the valve cover (9). A sealing seat (8), packing (7), packing sleeve (6), and packing plate (5) are arranged in sequence inside the sealing cylinder. The valve stem (13) passes through the valve cover (9), sealing seat (8), packing (7), packing sleeve (6), and packing plate (5).

6. A dehydrating valve according to claim 5, wherein The valve cover (9) is fixedly connected to the valve body (17) via a connector (18), and the packing plate (5) is fixedly connected to the sealing cylinder via a connector (18). The connector (18) uses bolts and nuts.

7. A dehydrating valve according to claim 5, wherein An upper fixing plate (10) is provided inside the valve body (17). The upper fixing plate is located below the valve cover (9). The upper fixing plate (10) is fixedly connected to the valve body (17). The upper fixing plate (10) is fixedly connected to the spring (11). A lower fixing plate (12) is fixedly connected to the valve stem (13). The upper end of the lower fixing plate (12) is fixedly connected to the spring (11).

8. A dehydrator valve according to claim 1 wherein, The valve plate (14) is installed at the lower end of the valve stem (13), and the sealing surface (15) is installed on the valve plate (14).

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