Ultrahigh-pressure self-pressure sealing forged steel stop valve

Abstract

The utility model provides an ultrahigh pressure self-pressure sealing forged steel stop valve, which relates to the technical field of stop valves, and comprises a flange, the bottom end of the flange is fixedly connected with a leakage-proof component, the leakage-proof component comprises a limit ring, the top end of the limit ring is fixedly connected to the bottom end of the flange, the inside of the flange is in threaded connection with a valve rod, and the valve rod is in threaded connection with the flange. The bottom end of the valve rod is fixedly connected with a cushion block, the bottom end of the cushion block is fixedly connected with a valve clack, and the bottom end of the flange is fixedly connected with an air cushion. According to the utility model, the air cushion is compressed to form a sealing state, the fluid leakage pad is effectively prevented from being compressed, and a part of force generated in the operation process can be absorbed, so that the valve is easier to open and close, the abrasion is reduced, and the pressure on the valve clack is increased according to the change of the fluid pressure, so that the resistance of the valve clack to the fluid flow is increased; and especially under the ultrahigh pressure environment, the sealing performance of the valve is improved, and the possibility of fluid leakage is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of stop valves, in particular to an ultra-high pressure self-pressure sealing forged steel stop valve. Background Art

[0002] A globe valve is a type of valve commonly used in piping systems to control the flow of fluids. It can completely open or close a fluid passage, or it can regulate the flow of a fluid. Steel globe valves are usually made of steel and are corrosion-resistant and high-pressure-resistant, making them suitable for a variety of industrial applications and environments. They are commonly used to control the flow of water, oil, steam, and other fluids, and play an important role in piping systems, and are commonly found in water supply systems, processing plants, chemical plants, and other places;

[0003] After searching, the Chinese patent announcement number: CN201963910U discloses a stop valve, including a body, a valve cover, a valve disc, a valve stem and a hand wheel, wherein the valve stem is arranged in the inner cavity between the body and the valve cover, the valve stem is located outside the inner cavity of the valve cover, and the surface of the valve stem is corrugated. The beneficial effects of the utility model: the utility model has good sealing performance, saves effort when opening or closing, and is durable;

[0004] However, in this patent, only the valve stem seal is provided, and no specific valve stem and valve cover seal structure is designed. Therefore, the alarm process is roughly as follows: during the process of the valve stem rotating on the valve cover, the high pressure generated when the water flows through the stop valve will cause greater friction and pressure at the contact point between the valve stem and the valve cover, which is prone to wear and damage, thereby reducing the service life of the valve. Therefore, the utility model proposes an ultra-high pressure self-pressure sealed forged steel stop valve. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and provides an ultra-high pressure self-pressure sealing forged steel stop valve.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an ultra-high pressure self-pressure sealing forged steel stop valve, comprising a flange, the bottom end of which is fixedly connected to a leak-proof component;

[0007] The anti-leakage component includes a limiting ring, the top end of the limiting ring is fixedly connected to the bottom end of the flange, the inner thread of the flange is connected to a valve stem, the bottom end of the valve stem is fixedly connected to a cushion block, the bottom end of the cushion block is fixedly connected to a valve flap, and the bottom end of the flange is fixedly connected to an air cushion.

[0008] The beneficial effect of adopting the above further solution is: achieving sealing at the valve stem.

[0009] As a preferred embodiment, the bottom end of the flange is fixedly connected to a pressure assembly, and the pressure assembly includes a circulation pipe, the bottom end of the circulation pipe is fixedly connected to a docking pipe 1, the inner wall of the docking pipe 1 is fixedly connected to a support column, the top end of the support column is slidably connected to a pressure block, the outer bottom end of the pressure block is provided with an opening, and the inner wall of the pressure block is provided with a spring.

[0010] The beneficial effect of adopting the above further solution is: increasing the pressure on the valve disc and improving the sealing performance.

[0011] As a preferred embodiment, the outer bottom end of the air cushion contacts the top end of the cushion block, the outer portion of the air cushion contacts the inner wall of the limiting ring, and the air cushion is made of rubber.

[0012] The beneficial effect of adopting the above further solution is: ensuring that the air cushion can generate expansion pressure when the cushion block contacts the air cushion, thereby achieving a sealing effect.

[0013] As a preferred implementation, one end of the spring is fixedly connected to the pressure block, and the other end of the spring is fixedly connected to the support column.

[0014] The beneficial effect of adopting the above further solution is that the pressure block is extended toward the flow pipe when not under pressure.

[0015] As a preferred implementation, the outside of the pressure block contacts the inner wall of the butt joint pipe 1, and the bottom end of the valve flap contacts the top end of the pressure block.

[0016] The beneficial effect of adopting the above further solution is to ensure that the valve flap is sealed with the butt joint when moving downward.

[0017] As a preferred embodiment, the outside of the flange is fixedly connected to a butt pipe 2, the top of the flange is fixedly connected to a rotating support block, the top of the valve stem is fixedly connected to a handle, and the outside of the valve stem is threadedly connected to the rotating support block.

[0018] The beneficial effect of adopting the above further solution is: achieving the stability and operability of the valve.

[0019] Compared with the prior art, the advantages and positive effects of the utility model are:

[0020] 1. The utility model is provided with a leak-proof component. When the handle drives the valve stem to rotate, the valve disc is driven to move upward. At this time, the pad at the top of the valve disc contacts the air cushion. When the valve disc is closed, the air cushion is compressed to form a sealed state, which effectively prevents fluid leakage. The cushion is compressed and can also absorb part of the force generated during the operation, making it easier to open and close the valve and reducing wear. This not only improves the sealing performance of the valve, but also extends the service life of the valve.

[0021] 2. The pressure assembly design of the utility model guides the fluid into the valve through the flow pipe, and the fluid enters the pressure block area through the butt joint pipe. The pressure block can increase the pressure on the valve disc according to the change of fluid pressure through the design of the spring combined with the support column and the opening, thereby increasing the resistance of the valve disc to the flow of fluid, especially in ultra-high pressure environment, improving the sealing performance of the valve and reducing the possibility of fluid leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front view of an ultra-high pressure self-sealing forged steel stop valve of the utility model;

[0023] Figure 2 This is a cross-sectional view of an ultra-high pressure self-sealing forged steel flow pipe of the utility model;

[0024] Figure 3 It is a cross-sectional view of a butt joint pipe 1 in an ultra-high pressure self-pressure sealing forged steel stop valve of the utility model;

[0025] Figure 4 This is a disassembled diagram of a pressure component in an ultra-high pressure self-sealing forged steel stop valve of the utility model.

[0026] Reference numerals

[0027] 1. Flange; 2. Anti-leakage assembly; 21. Limiting ring; 22. Valve stem; 23. Spacer; 24. Valve disc; 25. Air cushion; 3. Pressure assembly; 31. Flow pipe; 32. Butt joint pipe 1; 33. Support column; 34. Pressure block; 35. Opening; 36. Spring; 4. Butt joint pipe 2; 5. Rotating support block; 6. Handle. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Example 1

[0030] like Figure 1 - Figure 3As shown, the utility model provides a technical solution: an ultra-high pressure self-sealing forged steel stop valve, comprising a flange 1, the bottom end of the flange 1 is fixedly connected with a leakproof component 2, the leakproof component 2 comprises a limiting ring 21, the top of the limiting ring 21 is fixedly connected to the bottom end of the flange 1, the flange 1 is internally threaded with a valve stem 22, the bottom end of the valve stem 22 is fixedly connected with a cushion block 23, the bottom end of the cushion block 23 is fixedly connected with a valve disc 24, the bottom end of the flange 1 is fixedly connected with an air cushion 25, the outer bottom end of the air cushion 25 is in contact with the top end of the cushion block 23, the outer part of the air cushion 25 is in contact with the inner wall of the limiting ring 21, the air cushion 25 is made of rubber, the flange 1 provides a stable support and connection, the leakproof component 2 enhances the sealing performance of the valve and prevents medium leakage, the limiting ring 21 provides a stable support, and the valve stem 22 is a control valve The flap 24 is a key component for opening and closing. It is connected to the flange 1 through threads to realize the movement of the flap 24. The pad 23 provides a certain support effect. The flap 24 is a key component for controlling the flow of the medium. The connection with the pad 23 ensures that the flap 24 can accurately follow the movement of the valve stem 22. The air cushion 25 is designed to achieve a sealing effect at the connection between the threaded rod and the flange 1. By contacting with the pad 23, the close contact between the air cushion 25 and the flap 24 is ensured to provide effective sealing. Secondly, by contacting with the limit ring 21, it can ensure that the air cushion 25 remains stable during the movement of the valve and will not be displaced. The rubber material of the air cushion 25 can provide good sealing performance and wear resistance, and at the same time has good elasticity, which helps to reduce the valve operating force and extend the service life.

[0031] Example 2

[0032] like Figure 1 , Figure 3 and Figure 4As shown, the bottom end of the flange 1 is fixedly connected with a pressure assembly 3, and the pressure assembly 3 includes a circulation pipe 31, the bottom end of the circulation pipe 31 is fixedly connected with a butt joint pipe 32, the inner wall of the butt joint pipe 32 is fixedly connected with a support column 33, the top of the support column 33 is slidably connected with a pressure block 34, the outside of the pressure block 34 is in contact with the inner wall of the butt joint pipe 32, the bottom end of the valve disc 24 is in contact with the top of the pressure block 34, an opening 35 is provided at the bottom end of the outside of the pressure block 34, a spring 36 is provided on the inner wall of the pressure block 34, one end of the spring 36 is fixedly connected to the pressure block 34, and the other end of the spring 36 is fixedly connected to the support column 33. The existence of the pressure assembly 3 can adjust the working pressure of the valve to meet specific working requirements and ensure the normal operation of the valve. The circulation pipe 31 is a pipeline for the diversion medium, which transfers the medium Guided to the inside of the valve in order to control the flow of the medium, the butt-joint pipe 32 connects the flow pipe 31 with the valve body to ensure that the medium enters the inside of the valve smoothly, the butt-joint pipe 32 connects the flow pipe 31 with the valve body to ensure that the medium enters the inside of the valve smoothly, the function of the support column 33 is to provide support and stability to ensure that the pressure block 34 can move and function correctly, the pressure block 34 is a key component of pressure regulation, it realizes the regulation of the pressure of the valve disc 24 by connecting with the support column 33, ensures that the pressure block 34 can seal the valve during the operation of the valve, and then contacts with the valve disc 24 to be correctly regulated by pressure, the opening 35 is designed to increase the pressure, when the water flows to the valve disc 24, it is blocked in the butt-joint pipe 32, the pressure of the pressure block 34 is increased by flowing to the opening 35;

[0033] The flange 1 is externally fixedly connected with a butt joint pipe 24, the top of the flange 1 is fixedly connected with a rotating support block 5, the top of the valve stem 22 is fixedly connected with a handle 6, the external thread of the valve stem 22 is connected to the rotating support block 5, the butt joint pipe 24 is used to connect the flange 1 with the pipeline system to ensure the stable connection between the valve and the pipeline, and the existence of the rotating support block 5 allows the valve to be rotated to open and close the valve. Such a design can provide a convenient operation method and ensure the flexibility and controllability of the valve. The handle 6 is a component for manually operating the valve. It is connected with the valve stem 22, so that the operator can easily control the switch state of the valve. Through the threaded connection, the valve stem 22 is tightly combined with the rotating support block 5 to ensure the stability and reliability of the valve during operation.

[0034] Working principle:

[0035] like Figure 1-4As shown, first, the operator rotates the handle 6, and this action is transmitted through the valve stem 22. Because the top of the valve stem 22 is fixedly connected to the handle 6, and the external thread is connected to the rotating support block 5, the entire operation becomes convenient and reliable. Then, as the valve stem 22 rotates, the cushion block 23 and the valve flap 24 move up and down accordingly. Because the bottom of the cushion block 23 is fixedly connected to the valve flap 24, the basic function of opening or closing the valve is realized. The rotation movement of the valve stem 22 drives the accurate positioning of the valve flap 24, which can open the medium flow or close it to prevent the medium flow. Through the movement of the valve flap 24, the air cushion 25 provides a sealing effect between the valve flap 24 and the flange 1, and the external bottom end contacts the top of the cushion block 23 and the inner wall of the limit ring 21, ensuring the sealing and leak-proof effect. The rubber air cushion 25 not only provides good sealing performance and wear resistance, but also has good elasticity, which helps to reduce the valve operating force and prolong the service life. In addition, the design of the pressure assembly 3 allows the valve to be adjusted according to the requirements of the working pressure. The combination of the flow pipe 31 and the butt joint pipe 32 not only ensures that the medium can smoothly enter the valve, but also realizes upward pressure when in contact with the support column 33 and the pressure block 34 through the cooperation. When the water flows to the butt joint pipe 32, the water flows through the opening 25 to increase the pressure of the pressure block 34, so that the valve flap 24 rebounds to the top under the action of pressure, and then makes the butt joint pipes 32 on both sides fit tightly. The addition of the spring 36 ensures the stability and reliability of the pressure regulation, and ensures that the pressure block 34 can maintain the correct position when the pressure changes through the elastic force, and can extend to the top when there is no pressure.

[0036] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An ultra-high pressure self-sealing forged steel stop valve, comprising a flange (1), characterized in that: The bottom end of the flange (1) is fixedly connected with a leak-proof component (2); The anti-leakage component (2) comprises a limiting ring (21), the top end of the limiting ring (21) is fixedly connected to the bottom end of the flange (1), the flange (1) is internally threadedly connected to a valve stem (22), the bottom end of the valve stem (22) is fixedly connected to a cushion block (23), the bottom end of the cushion block (23) is fixedly connected to a valve flap (24), and the bottom end of the flange (1) is fixedly connected to an air cushion (25).

2. The ultra-high pressure self-sealing forged steel stop valve according to claim 1, characterized in that: The bottom end of the flange (1) is fixedly connected to a pressure assembly (3), and the pressure assembly (3) comprises a circulation pipe (31), the bottom end of the circulation pipe (31) is fixedly connected to a butt joint pipe (32), the inner wall of the butt joint pipe (32) is fixedly connected to a support column (33), the top end of the support column (33) is slidably connected to a pressure block (34), an opening (35) is provided at the outer bottom end of the pressure block (34), and a spring (36) is provided on the inner wall of the pressure block (34).

3. The ultra-high pressure self-sealing forged steel stop valve according to claim 2, characterized in that: The outer bottom end of the air cushion (25) contacts the top end of the cushion block (23), the outer portion of the air cushion (25) contacts the inner wall of the limiting ring (21), and the air cushion (25) is made of rubber.

4. The ultra-high pressure self-sealing forged steel stop valve according to claim 2, characterized in that: One end of the spring (36) is fixedly connected to the pressure block (34), and the other end of the spring (36) is fixedly connected to the support column (33).

5. The ultra-high pressure self-sealing forged steel stop valve according to claim 2, characterized in that: The outside of the pressure block (34) contacts the inner wall of the butt joint pipe (32), and the bottom end of the valve flap (24) contacts the top end of the pressure block (34).

6. The ultra-high pressure self-sealing forged steel stop valve according to claim 1, characterized in that: The outside of the flange (1) is fixedly connected to a butt pipe 2 (4), the top of the flange (1) is fixedly connected to a rotating support block (5), the top of the valve stem (22) is fixedly connected to a handle (6), and the outside of the valve stem (22) is threadedly connected to the rotating support block (5).

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