High temperature and high pressure angle gate valve

Abstract

This utility model provides a high-temperature and high-pressure angle gate valve, including a valve body, a torsion rod, a valve stem, a valve disc, a valve seat, and a valve cover. The bottom of the valve body has an inlet end, and one side has an outlet end. A first sealing ring is installed at the junction of the valve cover and the valve stem, and a metal plate is welded to the bottom of the valve cover. This utility model seals the junction of the valve cover and valve disc with the valve stem through the action of the first and second sealing rings. When the valve stem rotates for a long time, the connection may loosen, allowing media to enter and affecting the service life of the device. This design improves the sealing performance. Simultaneously, the elastic tensile force of the bellows makes closing the valve easier than traditional methods. Furthermore, the bellows wrapping around the outer wall of the valve stem forms another sealed space between itself, the metal plate, and the valve disc, further preventing media leakage and enhancing the sealing performance.

Description

Technical Field

[0001] This utility model belongs to the technical field of angle gate valves, and more specifically, it relates to high temperature and high pressure angle gate valves. Background Technology

[0002] With the rapid development of high-end industrial fields such as petrochemicals, power plants, nuclear power, and aerospace, the performance requirements for fluid control equipment are becoming increasingly stringent. Under extreme conditions such as high temperature and high pressure, ordinary valves are unable to meet the requirements for sealing, pressure resistance, and corrosion resistance. High-temperature and high-pressure angle gate valves have emerged as key fluid control components and are widely used in pipeline systems for controlling hazardous media such as high-temperature steam and high-pressure liquids.

[0003] Traditional gate valves have many shortcomings: they require a large opening torque, making operation difficult; they have poor sealing performance, often consisting of a single-layer sealing structure, which makes them prone to leakage under high temperature and pressure; and the valve stem is easily deformed by stress, affecting the valve's opening and closing function and service life, making it difficult to meet the long-term stable operation requirements under high temperature and pressure conditions.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings to provide a high-temperature and high-pressure angle shut-off valve, in order to achieve a more practical value. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a high-temperature and high-pressure angle shut-off valve, which is achieved by the following specific technical means:

[0006] A high-temperature and high-pressure angle gate valve includes a valve body, a torsion rod, a valve stem, a valve disc, a valve seat, and a valve cover. The bottom of the valve body has an inlet end, and one side of the valve body has an outlet end. A first sealing ring is installed at the junction of the valve cover and the valve stem. A metal plate is welded to the bottom of the valve cover and is disposed on the outer wall of the valve stem. A bellows is installed between the metal plate and the valve disc. A second sealing ring is provided at the junction of the inner wall of the valve disc and the valve stem. The bottom end of the valve stem extends into the inner wall of the valve disc to form a cavity, and a sensing component is disposed on the inner wall of the cavity.

[0007] Preferably, the sensing component includes a plurality of connecting posts, each of the connecting posts having a spring installed at its bottom, each of the springs having a base installed at its bottom, and the outer sidewalls of the plurality of connecting posts being slidably connected to the inner sidewalls of the bases.

[0008] Preferably, a pressure sensor is installed at the bottom of the cavity, and the pressure sensor is externally connected to a display screen via wires.

[0009] Preferably, the valve seat is disposed on the inner side wall of the water inlet end, and the valve seat and valve disc move up and down by rotating the valve stem, thereby forming a closed state or an open state, used to prevent or block the flow of medium.

[0010] Preferably, the metal plate is made of stainless steel.

[0011] Preferably, the bellows is made of metal and is disposed on the outer side wall of the valve stem.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This invention uses the first and second sealing rings to seal the connection between the valve cover, valve disc, and valve stem. When the valve stem rotates for a long time, the connection may loosen, allowing the medium to enter and affecting the service life of the device. This design improves the sealing performance. At the same time, the elastic tensile force of the bellows makes closing the valve easier than the traditional method. In addition, the bellows wraps around the outer wall of the valve stem, forming another closed space between it, the metal plate, and the valve disc, further preventing the leakage of the medium and further enhancing the sealing performance.

[0014] By connecting the column, the valve stem compresses the spring and applies pressure to the pressure sensor. The pressure sensor transmits the sensed pressure data to an external display device via wires. Operators can easily observe the data to control the force of turning the torsion bar, thereby reducing the pressure on the valve stem and keeping the force within an appropriate range. This reduces the probability of the valve stem's lifespan being reduced due to excessive rotation and minimizes the risk of deformation caused by prolonged excessive force on the valve stem. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the high-temperature and high-pressure angle gate valve of this utility model.

[0016] Figure 2 This is a schematic cross-sectional view of the high-temperature and high-pressure angle gate valve of this utility model.

[0017] Figure 3 This utility model is a high-temperature and high-pressure angle gate valve. Figure 2 Enlarged structural diagram at point A in the middle.

[0018] Figure 4 This utility model is a high-temperature and high-pressure angle gate valve. Figure 2 Enlarged structural diagram at point B.

[0019] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0020] 1. Valve body; 2. Inlet end; 3. Outlet end; 4. Torsion bar; 5. Valve stem; 6. First sealing ring; 7. Metal plate; 8. Bellows; 9. Second sealing ring; 10. Connecting column; 11. Base; 12. Spring; 13. Pressure sensor; 14. Valve disc; 15. Valve seat; 16. Valve cover. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Example:

[0023] As attached Figure 1 To be continued Figure 4 As shown:

[0024] This utility model provides a high-temperature and high-pressure angle gate valve, including a valve body 1, a torsion rod 4, a valve stem 5, a valve disc 14, a valve seat 15, and a valve cover 16. The bottom of the valve body 1 has an inlet end 2, and one side of the valve body 1 has an outlet end 3. A first sealing ring 6 is installed at the junction of the valve cover 16 and the valve stem 5. A metal plate 7 is welded to the bottom of the valve cover 16 and is disposed on the outer side wall of the valve stem 5. A bellows 8 is installed between the metal plate 7 and the valve disc 14. A second sealing ring 9 is provided at the junction of the inner wall of the valve disc 14 and the valve stem 5. The bottom end of the valve stem 5 extends into the inner wall of the valve disc 14, forming a cavity. A sensing element is installed on the inner wall of the cavity. The valve cover 16 and valve disc 14 are sealed at the junction with the valve stem 5 by the first sealing ring 6 and the second sealing ring 9. This is because when the valve stem 5 rotates for a long time, the connection may loosen and allow the medium to enter, which will affect the service life of the device. This design improves the sealing performance. At the same time, the elastic tensile force of the bellows 8 makes it easier to close the valve than the traditional closing method. In addition, the bellows 8 is wrapped around the outer wall of the valve stem 5, forming another closed space between it, the metal plate 7 and the valve disc 14, which further prevents the medium from leaking and further enhances the sealing performance.

[0025] The sensing component includes multiple connecting posts 10, each with a spring 12 mounted at its bottom and a base 11 mounted at its bottom. The outer walls of the connecting posts 10 are slidably connected to the inner walls of the base 11. A pressure sensor 13 is installed at the bottom of the cavity. The pressure sensor 13 is connected to a display screen via wires. In actual use, the connecting posts 10 are driven by the valve stem 5 to compress the springs 12 and apply pressure to the pressure sensor 13. The pressure sensor 13 transmits the sensed pressure data to the external display screen via wires. The operator can easily observe the data to control the force of turning the torsion bar 4, thereby reducing the pressure on the valve stem 5 and keeping the force within an appropriate range. This reduces the probability of the valve stem 5's lifespan being reduced due to excessive rotation and minimizes the risk of deformation caused by prolonged excessive force.

[0026] The valve seat 15 is located on the inner wall of the water inlet 2. The valve seat 15 and the valve disc 14 move up and down by rotating the valve stem 5, thereby forming a closed state or an open state, which is used to prevent or block the flow of medium.

[0027] Among them, the metal plate 7 is made of stainless steel. By making the metal plate 7 of stainless steel, the stainless steel can resist common corrosive media such as atmosphere, water, acid and alkali through the chromium oxide protective layer formed on the surface, avoiding corrosion inside the valve body 1, thereby extending the service life of the device.

[0028] Among them, the bellows 8 is made of metal bellows and is located on the outer wall of the valve stem 5. The metal bellows 8 has corrosion resistance and strong corrosion resistance. In addition, the bellows 8 can effectively isolate the medium or prevent harmful fluids from entering the equipment through the sealing design.

[0029] The working principle of this embodiment: The inlet end 2 and the outlet end 3 constitute a medium flow channel. Water or medium flows in from the inlet end 2, flows through the channel between the valve seat 15 and the valve disc 14 to the outlet end 3. The valve stem 5 is connected to the valve disc 14. When the torsion bar 4 is rotated, the valve stem 5 drives the valve disc 14 to move up and down. When the valve disc 14 moves down and fits tightly against the valve seat 15, the channel inside the valve body 1 is closed, preventing the medium from flowing. When the valve disc 14 moves up, the channel is opened, allowing the medium to flow through. The metal plate 7 is welded to the bottom of the valve cover 16, located on the outer wall of the valve stem 5, forming a closed space with the bellows 8 and the valve disc 14, further enhancing the sealing performance. The bellows 8 is wrapped around... The elastic tension of the outer wall of the valve stem 5 makes closing the valve easier and effectively isolates the medium or prevents harmful fluids from entering the equipment. The bottom end of the valve stem 5 extends into the cavity formed by the inner wall of the valve disc 14. The cavity contains a sensing component. The connecting column 10 is squeezed by the valve stem 5, compressing the spring 12 and applying pressure to the pressure sensor 13. The pressure sensor 13 transmits data to the display screen to facilitate control of the torsion bar 4's turning force and prevent damage to the valve stem 5. The valve seat 15 is located on the inner wall of the water inlet 2 and cooperates with the valve disc 14. The opening and closing of the valve is controlled by rotating the valve stem 5. The stainless steel metal plate 7 uses a chromium oxide protective layer to resist corrosive media. The bellows 8 made of metal bellows material has corrosion resistance, extending the service life of the device and ensuring reliability.

[0030] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A high-temperature and high-pressure angle gate valve, comprising a valve body (1), a torsion bar (4), a valve stem (5), a valve disc (14), a valve seat (15), and a valve cover (16), characterized in that: The valve body (1) has an inlet end (2) at its bottom and an outlet end (3) on one side. A first sealing ring (6) is installed at the junction of the valve cover (16) and the valve stem (5). A metal plate (7) is welded to the bottom of the valve cover (16). The metal plate (7) is located on the outer wall of the valve stem (5). A bellows (8) is installed between the metal plate (7) and the valve disc (14). A second sealing ring (9) is provided at the junction of the inner wall of the valve disc (14) and the valve stem (5). The bottom end of the valve stem (5) extends into the inner wall of the valve disc (14) and forms a cavity. A sensing component is provided on the inner wall of the cavity.

2. The high-temperature and high-pressure angle shut-off valve as described in claim 1, characterized in that: The sensing component includes multiple connecting posts (10), each of which has a spring (12) installed at its bottom, and each of which has a base (11) installed at its bottom. The outer sidewalls of the multiple connecting posts (10) are slidably connected to the inner sidewalls of the base (11).

3. The high-temperature and high-pressure angle shut-off valve as described in claim 1, characterized in that: A pressure sensor (13) is installed at the bottom of the cavity, and the pressure sensor (13) is connected to a display screen via wires.

4. The high-temperature and high-pressure angle shut-off valve as described in claim 1, characterized in that: The valve seat (15) is located on the inner wall of the water inlet (2). The valve seat (15) and the valve disc (14) move up and down by rotating the valve stem (5) to form a closed state or an open state, which is used to prevent or block the flow of medium.

5. The high-temperature and high-pressure angle shut-off valve as described in claim 1, characterized in that: The metal plate (7) is made of stainless steel.

6. The high-temperature and high-pressure angle shut-off valve as described in claim 1, characterized in that: The bellows (8) is made of metal bellows and is located on the outer side wall of the valve stem (5).

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