High-safety ultralow-temperature forged steel gate valve

Abstract

The utility model discloses a high-safety ultralow-temperature forged steel gate valve, and relates to the technical field of ultralow-temperature forged steel gate valves, the high-safety ultralow-temperature forged steel gate valve comprises a low-temperature gate valve body, a valve plate is arranged in the low-temperature gate valve body in a sliding mode, a sealing plate is arranged in the valve plate in a hinged mode, and a fixing block is fixedly arranged in the low-temperature gate valve body. An inserting rod is fixedly arranged on the top face of the fixing block, the inserting rod is movably inserted in a valve plate, a pressure relief hole is formed in the valve plate, a through groove is formed in the valve plate, the sealing plate is hinged to the interior of the through groove, the pressure relief hole is communicated with the through groove, and a fixing frame is fixedly arranged in the through groove. The valve plate slides in the groove, then the inserting rod abuts against the sealing plate and enables the sealing plate to rotate in the through groove, air pressure in the groove can be relieved from the through groove and the pressure relief hole, the situation that the low-temperature gate valve body cracks due to the fact that the pressure intensity of internal air is increased is avoided, and the safety of the low-temperature gate valve body is improved.

Description

Technical Field

[0001] This utility model relates to the field of cryogenic forged steel gate valve technology, specifically a high-safety cryogenic forged steel gate valve. Background Technology

[0002] Low-temperature forged steel gate valves are mainly used in pipelines of various systems in thermal power plants to cut off or connect pipeline media.

[0003] However, when existing cryogenic forged steel gate valves are closed, the valve plate slides inside the valve, compressing the internal gas and increasing the internal gas pressure. This can cause the cryogenic forged steel gate valve to crack, easily leading to an explosion and posing a safety hazard. To address these issues, the inventors have proposed a high-safety cryogenic forged steel gate valve to solve the above problems. Utility Model Content

[0004] To address the problem that when a cryogenic forged steel gate valve is closed, the sliding valve plate inside the valve compresses the internal gas, leading to increased internal gas pressure, which can cause the valve to crack and potentially explode, the purpose of this invention is to provide a high-safety cryogenic forged steel gate valve.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a high-safety ultra-low temperature forged steel gate valve, including a low-temperature gate valve body, a valve plate slidably disposed within the low-temperature gate valve body, a sealing plate hinged within the valve plate, a fixing block fixedly disposed within the low-temperature gate valve body, an insert rod fixedly disposed on the top surface of the fixing block, the insert rod being movably inserted into the valve plate, a pressure relief hole being formed within the valve plate, a through groove being formed within the valve plate, the sealing plate being hinged within the through groove, the pressure relief hole communicating with the through groove, a fixing frame fixedly disposed within the through groove, a slider slidably disposed within the fixing frame, a first ear plate fixedly disposed on one side of the slider, the first... A guide rod is rotatably provided inside the ear plate, and a second ear plate is fixedly provided on the top surface of the sealing plate. The other end of the guide rod is rotatably provided inside the second ear plate. A sliding rod is fixedly provided inside the fixed frame, and the slider is slidably provided on the outer surface of the sliding rod. A spring is fixedly connected between the inner wall of the fixed frame and the slider. First, by rotating the rotating wheel, the rotating ring rotates on the top surface of the fixed shell, and the threaded rod drives the valve plate to rise and fall, thereby controlling the opening and closing of the cryogenic gate valve body. When opening, the valve plate slides inside the fixed shell, and the pressure of the spring is greater than the pressure of the conveying air pressure, so the sealing plate will not be pushed open by the conveying air pressure, thereby avoiding air pressure leakage from the pressure relief hole when opening.

[0006] When the cryogenic gate valve body is closed, the valve plate slides in the groove, and then the insert rod abuts against the sealing plate, causing the sealing plate to rotate in the through groove. At the same time, the guide rod rotates in the second ear plate, and its other end rotates in the first ear plate, causing the slider to slide on the outer surface of the slide rod. Thus, when the valve plate slides down, the air pressure in the groove can be released from the through groove and the pressure relief hole, avoiding the increase of internal gas pressure and causing the cryogenic gate valve body to crack, thereby improving the safety of the cryogenic gate valve body.

[0007] Preferably, the cryogenic gate valve body has a groove, the valve plate is slidably disposed in the groove, the fixing block is fixedly disposed in the groove, the outer surface of the fixing block is fixedly provided with a sealing element, the cryogenic gate valve body is fixedly provided with a sealing ring, and the cryogenic gate valve body is fixedly provided with a sealing frame.

[0008] Preferably, a fixed shell is fixedly provided on the outer surface of the cryogenic gate valve body, a rotating ring is rotatably provided on the top surface of the fixed shell, a rotating wheel is fixedly provided on the top surface of the rotating ring, a threaded rod is fixedly provided on the top surface of the valve plate, the threaded rod is slidably inserted into the fixed shell, and the rotating ring is threadedly sleeved on the outer surface of the threaded rod.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] 1. In this utility model, when the cryogenic gate valve body is closed, the valve plate slides in the groove, and then the insert rod abuts against the sealing plate and makes the sealing plate rotate in the through groove. The air pressure in the groove can be released from the through groove and the pressure relief hole, avoiding the increase of internal gas pressure and causing the cryogenic gate valve body to crack, thus improving the safety of the cryogenic gate valve body.

[0011] 2. In this utility model, by rotating the wheel, the threaded rod drives the valve plate to rise and fall, thereby controlling the opening and closing of the cryogenic gate valve body. When opening, the valve plate slides in the fixed shell, and the pressure of the spring is greater than the pressure of the conveying air pressure, so the sealing plate will not be pushed open by the conveying air pressure, thereby avoiding air pressure leakage from the pressure relief hole when opening. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a partial cross-sectional view of the cryogenic gate valve body of this utility model;

[0015] Figure 3 This is a schematic diagram of the sealing ring structure of this utility model;

[0016] Figure 4 This is a partial cross-sectional view of the valve plate of this utility model.

[0017] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0018] In the diagram: 1. Low-temperature gate valve body; 101. Groove; 11. Fixed shell; 12. Rotating ring; 13. Rotating wheel; 14. Threaded rod; 15. Sealing ring; 16. Sealing frame; 17. Fixed block; 18. Sealing element; 19. Insert rod; 2. Valve plate; 201. Pressure relief hole; 202. Through groove; 21. Fixed frame; 22. Slide rod; 23. Spring; 24. Sliding block; 25. First ear plate; 26. Guide rod; 27. Sealing plate; 28. Second ear plate. Detailed Implementation

[0019] 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.

[0020] Example: Figure 1-5As shown, this utility model provides a high-safety cryogenic forged steel gate valve, including a cryogenic gate valve body 1, a valve plate 2 slidably disposed within the cryogenic gate valve body 1, a sealing plate 27 hinged within the valve plate 2, a fixing block 17 fixed within the cryogenic gate valve body 1, an insert rod 19 fixedly disposed on the top surface of the fixing block 17, the insert rod 19 being movably inserted into the valve plate 2, a pressure relief hole 201 and a through groove 202 opened within the valve plate 2, the sealing plate 27 being hinged within the through groove 202, the pressure relief hole 201 and the through groove 202 communicating with each other, a fixing frame 21 fixedly disposed within the through groove 202, a slider 24 slidably disposed within the fixing frame 21, a first ear plate 25 fixedly disposed on one side of the slider 24, a guide rod 26 rotatably disposed within the first ear plate 25, and a second ear plate 28 fixedly disposed on the top surface of the sealing plate 27. The other end of the guide rod 26 is rotatably disposed within the second ear plate 28. A slide rod 22 is fixedly disposed within the fixed frame 21. A slider 24 is slidably disposed on the outer surface of the slide rod 22. A spring 23 is fixedly connected between the inner wall of the fixed frame 21 and the slider 24. When the cryogenic gate valve body 1 is closed, the valve plate 2 slides within the groove 101. Then, the insert rod 19 abuts against the sealing plate 27 and causes the sealing plate 27 to rotate within the through groove 202. At the same time, the guide rod 26 rotates within the second ear plate 28, and its other end rotates within the first ear plate 25, causing the slider 24 to slide on the outer surface of the slide rod 22. Thus, when the valve plate 2 slides down, the air pressure in the groove 101 can be released from the through groove 202 and the pressure relief hole 201, preventing the internal gas pressure from increasing and causing the cryogenic gate valve body 1 to crack, thereby improving the safety of the cryogenic gate valve body 1.

[0021] The cryogenic gate valve body 1 has a groove 101 inside, the valve plate 2 is slidably disposed in the groove 101, the fixing block 17 is fixedly disposed in the groove 101, the outer surface of the fixing block 17 is fixedly provided with a sealing element 18, the cryogenic gate valve body 1 is fixedly provided with a sealing ring 15, and the cryogenic gate valve body 1 is fixedly provided with a sealing frame 16.

[0022] By adopting the above technical solution, the sealing element 18 is provided on the surface of the fixing block 17, so that when the valve plate 2 is in close contact with the bottom of the groove 101, the fixing block 17 and the sealing element 18 are inserted into the valve plate 2, which can seal the through groove 202. The sealing ring 15 and the sealing frame 16 can seal the valve plate 2 and prevent leakage.

[0023] A fixed shell 11 is fixedly provided on the outer surface of the low-temperature gate valve body 1. A rotating ring 12 is rotatably provided on the top surface of the fixed shell 11. A rotating wheel 13 is fixedly provided on the top surface of the rotating ring 12. A threaded rod 14 is fixedly provided on the top surface of the valve plate 2. The threaded rod 14 is slidably inserted into the fixed shell 11. The rotating ring 12 is threadedly sleeved on the outer surface of the threaded rod 14.

[0024] By adopting the above technical solution, by rotating the rotating wheel 13, the rotating ring 12 rotates on the top surface of the fixed shell 11, and the threaded rod 14 drives the valve plate 2 to rise and fall, thereby controlling the opening and closing of the cryogenic gate valve body 1. When opening, the valve plate 2 slides inside the fixed shell 11, and the pressure of the spring 23 is greater than the pressure of the conveying air pressure, so the sealing plate 27 will not be pushed open by the conveying air pressure, thereby avoiding air pressure leakage from the pressure relief hole 201 when opening.

[0025] Working principle: First, by rotating the rotating wheel 13, the rotating ring 12 rotates on the top surface of the fixed shell 11, and the threaded rod 14 drives the valve plate 2 to rise and fall, thereby controlling the opening and closing of the cryogenic gate valve body 1. When opening, the valve plate 2 slides inside the fixed shell 11, and the pressure of the spring 23 is greater than the pressure of the conveying air pressure, so the sealing plate 27 will not be pushed open by the conveying air pressure, thereby preventing air pressure from leaking from the pressure relief hole 201 when opening.

[0026] When the cryogenic gate valve body 1 is closed, the valve plate 2 slides in the groove 101, and then the insert rod 19 abuts against the sealing plate 27, causing the sealing plate 27 to rotate in the through groove 202. At the same time, the guide rod 26 rotates in the second ear plate 28, and its other end rotates in the first ear plate 25, causing the slider 24 to slide on the outer surface of the slide rod 22. Thus, when the valve plate 2 slides down, the air pressure in the groove 101 can be released from the through groove 202 and the pressure relief hole 201, avoiding the increase of internal gas pressure and causing the cryogenic gate valve body 1 to crack, thereby improving the safety of the cryogenic gate valve body 1.

[0027] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A high-safety cryogenic forged steel gate valve, comprising a cryogenic gate valve body (1), characterized in that: The low-temperature gate valve body (1) is provided with a valve plate (2) that slides inside. The valve plate (2) is provided with a sealing plate (27) that is hinged inside. The low-temperature gate valve body (1) is provided with a fixing block (17) that is fixed inside. The top surface of the fixing block (17) is provided with a plug rod (19) that is movably inserted into the valve plate (2). The valve plate (2) is provided with a pressure relief hole (201).

2. The high-safety cryogenic forged steel gate valve as described in claim 1, characterized in that, The valve plate (2) has a through groove (202) and the sealing plate (27) is hinged in the through groove (202). The pressure relief hole (201) is connected to the through groove (202).

3. A high-safety cryogenic forged steel gate valve as described in claim 2, characterized in that, A fixed frame (21) is fixedly provided in the through groove (202), and a slider (24) is slidably provided in the fixed frame (21). A first ear plate (25) is fixedly provided on one side of the slider (24), and a guide rod (26) is rotatably provided in the first ear plate (25).

4. A high-safety cryogenic forged steel gate valve as described in claim 3, characterized in that, The top surface of the sealing plate (27) is fixedly provided with a second ear plate (28), and the other end of the guide rod (26) is rotatably disposed in the second ear plate (28).

5. A high-safety cryogenic forged steel gate valve as described in claim 3, characterized in that, A slide rod (22) is fixedly provided inside the fixed frame (21), and the slider (24) is slidably provided on the outer surface of the slide rod (22). A spring (23) is fixedly connected between the inner wall of the fixed frame (21) and the slider (24).

6. A high-safety cryogenic forged steel gate valve as described in claim 1, characterized in that, The low-temperature gate valve body (1) has a groove (101) inside, the valve plate (2) is slidably disposed in the groove (101), the fixing block (17) is fixedly disposed in the groove (101), and a sealing element (18) is fixedly disposed on the outer surface of the fixing block (17).

7. A high-safety cryogenic forged steel gate valve as described in claim 1, characterized in that, A sealing ring (15) is fixedly provided inside the body (1) of the cryogenic gate valve, and a sealing frame (16) is fixedly provided inside the body (1) of the cryogenic gate valve.

8. A high-safety cryogenic forged steel gate valve as described in claim 1, characterized in that, The outer surface of the cryogenic gate valve body (1) is fixedly provided with a fixed shell (11), the top surface of the fixed shell (11) is rotatably provided with a rotating ring (12), the top surface of the rotating ring (12) is fixedly provided with a rotating wheel (13), the top surface of the valve plate (2) is fixedly provided with a threaded rod (14), the threaded rod (14) is slidably inserted into the fixed shell (11), and the rotating ring (12) is threadedly sleeved on the outer surface of the threaded rod (14).

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