Gate valve type blowout preventer

Abstract

The utility model relates to the technical field of valves, and discloses a gate valve type blowout preventer which comprises a valve body, a valve cover is detachably connected to the top of the valve body, an installation assembly is arranged on the inner wall of the valve body, a lifting assembly is arranged on the outer wall of the valve cover, and fixing pipes are fixedly connected to the two sides of the valve body. A flow guide plate is arranged on the inner wall of the fixed pipe; the mounting assembly comprises a mounting groove, a fixing plate is fixedly connected to the inner wall of the valve body, and a threaded groove is formed in the outer wall of the fixing plate. The gate valve type blowout preventer is provided with the sliding groove, the valves, a second sealing groove, a second sealing ring, a movable plate, a long rod, a lead screw and a fixed bearing, high-pressure and high-flow-speed fluid can be blocked and flow speed can be reduced by arranging a flow guide plate, the lead screw is rotated through a handle, and therefore synchronous descending and closing of the two valves are achieved, double blocking is formed, and the service life of the two valves is prolonged. Blowout can be well prevented, and reliability and safety of leakage prevention are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically a gate valve type anti-blowout device. Background Technology

[0002] In industries such as petrochemicals and nuclear power plants, leaks of fluids (including liquids and gases) in pipelines can lead to serious safety accidents. Valves are needed to control the flow of fluids, block them, and prevent leaks.

[0003] The prior art patent document CN205244450U provides a two-step switching gate valve, which is designed with pressure relief holes on the gate and the sealing plate. Pressure relief is achieved by the time difference between the sealing plate and the gate, thereby reducing the pressure difference between the inlet and outlet of the valve body, and thus reducing the driving force required for the gate to open and close, so that the gate valve can be easily opened and closed under high pressure.

[0004] While the aforementioned existing technologies have improved the reliability and ease of operation of valves to some extent, the blocking ability of a single valve is still limited in the face of serious leakage accidents. Especially in leakage scenarios with high pressure and high flow rate, a single valve may not be able to completely block the leakage of fluid, thus failing to effectively prevent fluid from spraying out. Therefore, we need a gate valve type blowout preventer. Utility Model Content

[0005] The purpose of this invention is to provide a gate valve type blowout preventer to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a gate valve type blowout preventer, including a valve body, a valve cover detachably connected to the top of the valve body, an installation component provided on the inner wall of the valve body, a lifting component provided on the outer wall of the valve cover, and fixed pipes fixedly connected to both sides of the valve body, with guide plates provided on the inner wall of the fixed pipes.

[0007] The mounting assembly includes a mounting groove, a fixing plate is fixedly connected to the inner wall of the valve body, and a threaded groove is provided on the outer wall of the fixing plate. A screw is threadedly connected to the inner wall of the threaded groove, and a limit block is rotatably connected to one end of the screw. A limit groove is provided on the outer wall of the valve cover, and a first sealing groove is provided on the outer wall of the valve cover. A first sealing ring is provided on the inner wall of the first sealing groove.

[0008] The lifting assembly includes a slide groove, and a valve is slidably connected to the inner wall of the slide groove. A second sealing groove is provided on the outer wall of the valve, and a second sealing ring is provided on the inner wall of the second sealing groove. A movable plate is fixedly connected to one end of the valve, and a long rod is slidably connected to the inner wall of the movable plate. A lead screw is threadedly connected to the inner wall of the movable plate, and a fixed bearing is provided at one end of the lead screw.

[0009] Preferably, a protective shell is detachably connected to the top of the valve cover, and a flange is fixedly connected to one end of the fixing tube.

[0010] Preferably, the fixing plate forms a threaded structure with the screw through a threaded groove, and one end of the screw extends into the threaded groove for connection.

[0011] Preferably, one end of the limiting block extends into the limiting groove for connection.

[0012] Preferably, the inner wall shape and size of the groove match the outer wall shape and size of the valve, and the inner wall of the groove fits into the outer wall of the valve.

[0013] Preferably, there are two valves, and the two valves are symmetrically arranged on the movable plate.

[0014] Preferably, one end of the lead screw is threaded through the movable plate and extends into the fixed bearing for connection.

[0015] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0016] First, this utility model is equipped with a slide groove, valve, second sealing groove, second sealing ring, moving plate, long rod, screw, and fixed bearing. By setting up a guide plate, it can block high-pressure and high-velocity fluids and slow down the flow rate. By turning the screw with the handle, the two valves can be closed synchronously, forming a double blockage, which can effectively prevent spraying and greatly improve the reliability and safety of leakage prevention.

[0017] Secondly, this utility model is provided with an installation groove, a fixing plate, a threaded groove, a screw, a limiting block, a limiting groove, a first sealing groove, and a first sealing ring. By turning the screw with the handle, one end of the limiting block is disengaged from the limiting groove, which facilitates the removal of the valve cover from the valve body, thereby facilitating the replacement of the first and second sealing rings. It also allows operators to periodically disassemble the valve cover to replace the sealing rings. The structure is simple and easy to use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the fixed tube and guide plate structure of this utility model;

[0020] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0021] Figure 4 This is a schematic diagram of the valve cover and valve structure of this utility model.

[0022] The components are as follows: 1. Valve body; 2. Valve cover; 3. Mounting assembly; 301. Mounting groove; 302. Fixing plate; 303. Threaded groove; 304. Screw; 305. Limiting block; 306. Limiting groove; 307. First sealing groove; 308. First sealing ring; 4. Lifting assembly; 401. Slide groove; 402. Valve; 403. Second sealing groove; 404. Second sealing ring; 405. Moving plate; 406. Long rod; 407. Lead screw; 408. Fixed bearing; 5. Protective shell; 6. Fixing pipe; 7. Guide plate; 8. Flange. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 A gate valve type blowout preventer includes a valve body 1, a valve cover 2 detachably connected to the top of the valve body 1, an installation assembly 3 provided on the inner wall of the valve body 1, a lifting assembly 4 provided on the outer wall of the valve cover 2, and fixed pipes 6 fixedly connected to both sides of the valve body 1, with guide plates 7 provided on the inner wall of the fixed pipes 6; the installation assembly 3 includes an installation groove 301, a fixed plate 302 fixedly connected to the inner wall of the valve body 1, and a threaded groove 303 formed on the outer wall of the fixed plate 302; a screw 304 threadedly connected to the inner wall of the threaded groove 303, and a limit block 305 rotatably connected to one end of the screw 304; and a limit groove 305 formed on the outer wall of the valve cover 2. 06, and the outer wall of the valve cover 2 is provided with a first sealing groove 307, and the inner wall of the first sealing groove 307 is provided with a first sealing ring 308; the lifting assembly 4 includes a slide groove 401, and the inner wall of the slide groove 401 is slidably connected to a valve 402, the outer wall of the valve 402 is provided with a second sealing groove 403, and the inner wall of the second sealing groove 403 is provided with a second sealing ring 404, one end of the valve 402 is fixedly connected to a moving plate 405, and the inner wall of the moving plate 405 is slidably connected to a long rod 406, the inner wall of the moving plate 405 is threadedly connected to a lead screw 407, and one end of the lead screw 407 is provided with a fixed bearing 408.

[0025] Through the above technical solution, the guide plate 7 can block high-pressure, high-velocity fluids and slow down the flow rate. By turning the screw 407, the two valves 402 are simultaneously lowered and closed, forming a double blockage, which can effectively prevent spraying and greatly improve the reliability and safety of leakage prevention. By turning the screw 304, one end of the limiting block 305 is moved away from the limiting groove 306, making it easy to remove the valve cover 2 from the valve body 1. This facilitates the replacement of the first sealing ring 308 and the second sealing ring 404, allowing operators to periodically disassemble the valve cover 2 to replace the sealing rings. The structure is simple and easy to use.

[0026] Specifically, a protective shell 5 is detachably connected to the top of the valve cover 2, and a flange 8 is fixedly connected to one end of the fixed pipe 6.

[0027] Through the above technical solution, the internal parts can be well protected by the protective shell 5. One end of the lead screw 407 is provided with a detachable handle. The protective shell 5 is provided with a bearing, and one end of the lead screw 407 passes through the bearing to facilitate the rotation of the lead screw 407. The flange 8 is provided to facilitate connection with the pipeline.

[0028] Specifically, the fixing plate 302 forms a threaded structure with the screw 304 through the threaded groove 303, and one end of the screw 304 extends into the threaded groove 303 for connection.

[0029] The above technical solution enhances the connection between the fixing plate 302, the threaded groove 303, and the screw 304. The threads in the threaded groove 303 match the threads on the screw 304, and one end of the screw 304 is provided with a detachable handle.

[0030] Specifically, one end of the limiting block 305 extends into the limiting groove 306 for connection.

[0031] Through the above technical solution, the outer wall of the limiting block 305 fits against the inner wall of the mounting groove 301, which facilitates the movement of the limiting block 305. One end of the limiting block 305 extends into the limiting groove 306 and engages, and the limiting block 305 abuts and fixes the valve cover 2.

[0032] Specifically, the inner wall shape and size of the slide groove 401 match the outer wall shape and size of the valve 402, and the inner wall of the slide groove 401 fits into the outer wall of the valve 402.

[0033] The above technical solution enhances the connection between the slide 401 and the valve 402, making it easier for the valve 402 to move within the slide 401 when it moves.

[0034] Specifically, there are two valves 402, and the two valves 402 are symmetrically arranged on the movable plate 405.

[0035] The above technical solution, by setting two valves 402, which open and close simultaneously by raising and lowering the valves 402, forms a double barrier, which can effectively prevent spraying and facilitate the blocking of fluid.

[0036] Specifically, one end of the lead screw 407 is threaded through the moving plate 405 and extends into the fixed bearing 408 for connection.

[0037] With the above technical solution, when the lead screw 407 rotates, the lead screw 407 rotates more stably in the fixed bearing 408. The moving plate 405 is provided with a screw groove that matches the lead screw 407. The moving plate 405 is provided with a groove. When the moving plate 405 moves, it moves more stably on the long rod 406 by relying on the groove.

[0038] In use, when fluid enters the fixed pipe 6, its flow rate is slowed down by the guide plate 7. Two valves 402 simultaneously descend and close, forming a double barrier, effectively preventing spraying and significantly improving the reliability and safety of leak prevention. When valve 402 is moved upwards to open and allow fluid to pass, the screw 407 is rotated by the handle. The screw 407 rotates more stably thanks to the fixed bearing 408, causing the moving plate 405 to move. The moving plate 405 then drives the two valves 402 to rise simultaneously, allowing fluid to pass. When valve 402 is moved downwards to close and block fluid passage, the screw 407 is rotated by the handle, causing the two valves 402 to descend and close simultaneously, blocking fluid passage. The second sealing ring 404 enhances the sealing between valve 402 and the sliding groove 401 on the valve cover 2, preventing leakage. The first sealing ring 308 enhances the sealing between the valve body 1 and the valve cover 2. To prevent leakage, when the first sealing ring 308 and the second sealing ring 404 need to be replaced after long-term use, the screw 304 is turned by the handle to move the limiting block 305 in the mounting groove 301. One end of the limiting block 305 leaves the limiting groove 306, and the operator can then remove the valve cover 2 to replace the first sealing ring 308. When replacing the second sealing ring 404, the screw 407 is turned by the handle to move both valves 402 down, exposing the second sealing ring 404 for easy replacement. When installing the valve cover 2, it is installed on the valve body 1. The screw 304 is turned by the handle to move the limiting block 305. One end of the limiting block 305 extends into the limiting groove 306 of the valve cover 2 and engages. The limiting block 305 continues to move and presses against the valve cover 2, completing the installation. This completes all the work. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gate valve type blowout preventer, comprising a valve body (1), characterized in that: The valve body (1) is detachably connected to the top of the valve cover (2), and the inner wall of the valve body (1) is provided with an installation component (3). The outer wall of the valve cover (2) is provided with a lifting component (4). The two sides of the valve body (1) are fixedly connected with a fixing pipe (6), and the inner wall of the fixing pipe (6) is provided with a guide plate (7). The mounting assembly (3) includes a mounting groove (301), a fixing plate (302) is fixedly connected to the inner wall of the valve body (1), and a threaded groove (303) is provided on the outer wall of the fixing plate (302). A screw (304) is threadedly connected to the inner wall of the threaded groove (303), and a limit block (305) is rotatably connected to one end of the screw (304). A limit groove (306) is provided on the outer wall of the valve cover (2), and a first sealing groove (307) is provided on the outer wall of the valve cover (2). A first sealing ring (308) is provided on the inner wall of the first sealing groove (307). The lifting assembly (4) includes a slide groove (401), and a valve (402) is slidably connected to the inner wall of the slide groove (401). A second sealing groove (403) is provided on the outer wall of the valve (402), and a second sealing ring (404) is provided on the inner wall of the second sealing groove (403). A moving plate (405) is fixedly connected to one end of the valve (402), and a long rod (406) is slidably connected to the inner wall of the moving plate (405). A lead screw (407) is threadedly connected to the inner wall of the moving plate (405), and a fixed bearing (408) is provided at one end of the lead screw (407).

2. The gate valve type blowout preventer according to claim 1, characterized in that: The top of the valve cover (2) is detachably connected to a protective shell (5), and one end of the fixed tube (6) is fixedly connected to a flange (8).

3. A gate valve type blowout preventer according to claim 1, characterized in that: The fixing plate (302) forms a threaded structure with the screw (304) through the threaded groove (303), and one end of the screw (304) extends into the threaded groove (303) for connection.

4. A gate valve type blowout preventer according to claim 1, characterized in that: One end of the limiting block (305) extends into the limiting groove (306) for connection.

5. A gate valve type blowout preventer according to claim 1, characterized in that: The inner wall shape and size of the groove (401) match the outer wall shape and size of the valve (402), and the inner wall of the groove (401) fits against the outer wall of the valve (402).

6. A gate valve type blowout preventer according to claim 1, characterized in that: The number of valves (402) is two, and the two valves (402) are symmetrically arranged on the movable plate (405).

7. A gate valve type blowout preventer according to claim 1, characterized in that: One end of the lead screw (407) is threaded through the movable plate (405) and extends into the fixed bearing (408) for connection.

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