An ultra-high pressure, high temperature and low torque metal hard seal ball valve

Abstract

The present invention discloses an ultra-high pressure, high temperature and low torque metal hard-sealed ball valve, including a main valve body and a limiting mechanism. Side valve bodies are fixed at both ends of the main valve body, the grease injection groove runs through the interior of the main valve body, the fixing frame is fixed on the top of the main valve body, the first trapezoidal block is slidably connected to the interior of the fixing frame, and the first trapezoidal block is connected to the connecting rod, a limiting plate is fixed on the sliding plate, and a rack is fixed on the surface of the limiting plate. The ultra-high pressure, high temperature and low torque metal hard-sealed ball valve is provided with a valve seat sealing ring and a self-lubricating layer. The valve seat sealing ring made of Deweilong material can ensure corrosion resistance, hardness and elasticity, so that the sealing surface between the ball and the valve seat sealing ring is tight and elastic, so that it can adapt to sealing under high pressure and low pressure conditions. The self-lubricating layer made of 304 stainless steel and PTFE flexible material can reduce the torque when the valve stem is rotated to drive the ball to rotate, which is convenient for use.

Description

Technical Field

[0001] The invention relates to the technical field of ball valves, and in particular to an ultra-high pressure, high temperature and low torque metal hard-sealed ball valve. Background Art

[0002] The ball valve is a new type of valve that came out in the 1950s. In just over 30 years, the ball valve has developed into a major valve type, which has been widely used in many fields such as aerospace, petrochemical, long-distance pipelines, light industry and food, and construction. The existing ball valve has a simple structure, and the material used to ensure cost-effectiveness is relatively ordinary. It cannot maintain a long service life under high temperature and high pressure environments, thereby increasing unnecessary losses. In addition, the existing ball valve is not convenient to fix the outer handle during use, and it is easy to cause self-rotation under external impact, thereby driving the internal ball to rotate and affecting use. Summary of the invention

[0003] The purpose of the present invention is to provide an ultra-high pressure, high temperature and low torque metal hard-sealed ball valve to solve the problem that the existing ball valve proposed in the above background technology has a simple structure and cannot maintain a long service life under high temperature and high pressure environment, and the outer handle is not convenient to fix it, and it is easy to cause rotation under external impact.

[0004] To achieve the above object, the present invention provides the following technical solution: an ultra-high pressure, high temperature and low torque metal hard seal ball valve, comprising a main valve body and a limit mechanism,

[0005] A main valve body, side valve bodies are fixed at both ends of the main valve body, and an observation port is fixed on the upper surface of the side valve body, and the observation port passes through the inner wall of the side valve body, a temperature sensor is fixed on the left side of the side valve body, and a heat conducting plate is fixed to the bottom of the valve body, and the heat conducting plate is connected to the condenser, the condenser is fixed to the bottom of the ear shaft, and the ear shaft is fixed to the bottom of the main valve body, a controller is fixed on the surface of the main valve body, and grease injection grooves are opened around the outside of the main valve body, the grease injection grooves pass through the interior of the main valve body, and a grease injection valve is installed on the grease injection grooves, and a valve seat sealing ring is fixed inside the main valve body, a ball is rotatably connected to the valve seat sealing ring, and the upper The lower two ends are connected to the ear shaft and the valve stem respectively, the valve stem is rotatably connected to the top of the main valve body, and the upper and lower ends of the interior of the main valve body are fixed with self-lubricating layers, and the self-lubricating layer is connected to the ball, a handle is fixed to the outer top of the valve stem, and a gear is fixed to the surface of the valve stem, and the gear is rotatably connected to the inside of the fixing frame, the fixing frame is fixed to the top of the main valve body, and a fixing block is fixed to the front end of the fixing frame, and a bolt is threadedly connected to the fixing block, and the bolt passes through the fixing block, and the fixing block is slidably connected to a connecting rod inside, the connecting rod is connected to the first spring, and the first spring is fixed to the inside of the fixing block, and the connecting rod passes through the fixing frame;

[0006] A limiting mechanism, which is used to prevent the valve stem from rotating, is installed inside the fixing frame.

[0007] Preferably, the limiting mechanism includes a first trapezoidal block, a second spring, a sliding plate, a second trapezoidal block, a limiting plate and a rack, the first trapezoidal block is slidably connected to the inside of the fixed frame, and the first trapezoidal block is connected to the connecting rod, the second springs are fixed at both ends of the inner wall of the fixed frame, and the second spring is connected to the sliding plate, and the sliding plate is slidably connected to the two ends of the inside of the fixed frame, the limiting plate is fixed on the sliding plate, and the surface of the limiting plate is fixed with a rack, and the rack is meshingly connected to both ends of the gear.

[0008] Preferably, the observation ports are provided in two groups and are symmetrical.

[0009] Preferably, the temperature sensor, condenser and controller are all connected by wires.

[0010] Preferably, the grease injection grooves and grease injection valves are provided in four groups, and are symmetrically arranged.

[0011] Preferably, the valve seat sealing ring is made of Deweilong material and is elastically designed.

[0012] Preferably, the self-lubricating layer is made of 304 stainless steel and PTFE flexible material.

[0013] Preferably, the first trapezoidal block and the second trapezoidal block are connected by snap-fitting.

[0014] Preferably, the second springs are provided in four groups and are symmetrically arranged.

[0015] Compared with the prior art, the invention has the following beneficial effects: the ultra-high pressure, high temperature and low torque metal hard seal ball valve,

[0016] (1) A heat conducting sheet and a condenser are provided. The heat conducting sheets at the bottom of the two sets of side valve bodies can be used to cool down the high-temperature fluid when transmitting. At the same time, the heat exchange of the heat conducting sheets by the condenser can improve the heat dissipation efficiency of the heat conducting sheets, so that the main valve body can be used normally in a high-temperature environment;

[0017] (2) Grease injection grooves and grease injection valves are provided. Grease can be injected into the grease injection grooves around the main valve body to inject grease into the internal cavity of the main valve body after long-term use, thereby improving the smoothness of the surface of the ball inside the main valve body, reducing the torque when the valve is opened and closed under pressure, and prolonging its service life;

[0018] (3) A valve seat seal ring and a self-lubricating layer are provided. The valve seat seal ring made of Deweilong material can ensure corrosion resistance, hardness and elasticity, so that the sealing surface between the ball and the valve seat seal ring is tight and elastic, so that it can adapt to sealing under high and low pressure conditions. The self-lubricating layer made of 304 stainless steel and PTFE flexible material can reduce the torque when the valve stem is turned to drive the ball to rotate, which is convenient for use;

[0019] (4) A second spring, a sliding plate and a limit plate are provided. The two sets of sliding plates are driven to move toward the central axis of the fixed frame under the elastic force of the second spring at both ends of the inner wall of the fixed frame, so that the rack on the limit plate can be clamped at both ends of the gear on the valve stem, thereby fixing the gear and the valve stem. The second trapezoidal blocks at both ends of the first trapezoidal block inside the fixed frame are pressed against the two sets of sliding plates and the limit plate to move toward the two ends away from the central axis of the fixed frame, so that the rack is separated from the gear on the valve stem and the valve stem can be rotated. The structure is simple and convenient for fixing the valve stem during use to prevent the valve stem and the ball inside the main valve body from rotating due to external impact, thereby affecting use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view structural schematic diagram of the present invention;

[0021] Figure 2 It is a schematic diagram of the side cross-sectional structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the top view structure of the present invention;

[0023] Figure 4 It is a side view structural schematic diagram of the present invention;

[0024] Figure 5 It is a schematic diagram of a top cross-sectional structure of a fixing frame of the present invention;

[0025] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at point A in the middle.

[0026] In the figure: 1. main valve body, 2. side valve body, 3. observation port, 4. temperature sensor, 5. heat conducting plate, 6. condenser, 7. ear shaft, 8. controller, 9. grease injection groove, 10. grease injection valve, 11. valve seat sealing ring, 12. ball, 13. valve stem, 14. self-lubricating layer, 15. handle, 16. gear, 17. fixing frame, 18. fixing block, 19. bolt, 20. connecting rod, 21. first spring, 22. limiting mechanism, 2201, first trapezoidal block, 2202, second spring, 2203, sliding plate, 2204, second trapezoidal block, 2205, limiting plate, 2206, rack. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-6 The present invention provides a technical solution: an ultra-high pressure, high temperature and low torque metal hard seal ball valve, such as Figure 1 , Figure 3 and Figure 4 As shown, side valve bodies 2 are fixed at both ends of the main valve body 1, and observation ports 3 are fixed on the upper surface of the side valve body 2. At the same time, the observation ports 3 penetrate the inner wall of the side valve body 2. There are two groups of observation ports 3, and they are symmetrical. Through the observation ports 3, it is convenient for staff to observe the water flow inside the main valve body 1 and the side valve body 2, which is convenient for real-time inspection. A temperature sensor 4 is fixed on the left side valve body 2, and a heat conducting plate 5 is fixed at the bottom of the valve body 2. At the same time, the heat conducting plate 5 is connected to the condenser 6, and the condenser 6 is fixed at the bottom of the ear shaft 7, and the ear shaft 7 It is fixed at the bottom of the main valve body 1, a controller 8 is fixed on the surface of the main valve body 1, and grease injection grooves 9 are opened around the outer side of the main valve body 1. The temperature sensor 4, condenser 6 and controller 8 are all connected by wires. The heat conducting plate 5 at the bottom of the side valve body 2 can dissipate heat when the pipeline transports a fluid with a higher temperature. When the temperature sensor 4 of the PCT110 model detects a fluid with a higher temperature, it transmits a signal to the controller 8, so that the controller 8 controls the condenser 8 at the bottom of the ear shaft 7 to exchange heat with the heat conducting plate 5, thereby improving the heat dissipation efficiency.

[0029] like Figure 1 and Figure 2As shown, the grease injection groove 9 runs through the interior of the main valve body 1, and a grease injection valve 10 is installed on the grease injection groove 9. At the same time, a valve seat sealing ring 11 is fixed inside the main valve body 1. There are four groups of grease injection grooves 9 and grease injection valves 10, and they are symmetrically arranged. The grease injection groove 9 can be used to inject grease into the inner cavity of the main valve body 1, improve the surface smoothness of the ball 12, and reduce the torque when the valve is opened and closed under pressure. The ball 12 is rotatably connected to the valve seat sealing ring 11, and the upper and lower ends of the ball 12 are respectively connected to the ear shaft 7 and the valve stem 13. The valve seat sealing ring 11 is made of Deweilong material, and the valve seat sealing ring 11 is an elastic design. The valve seat sealing ring 11 made of Deweilong material ensures corrosion resistance and high hardness to achieve wear resistance, and also ensures a certain degree of elasticity, so that the sealing surface between the ball 12 and the valve seat sealing ring 11 is tightly fitted and elastic, which can adapt to high-pressure sealing and can also achieve sealing under low-pressure conditions. The valve stem 13 is rotatably connected to the top of the main valve body 1, and the upper and lower ends of the main valve body 1 are fixed with self-lubricating layers 14. At the same time, the self-lubricating layer 14 is connected to the ball 12. The self-lubricating layer 14 is made of 304 stainless steel and PTFE flexible material. The self-lubricating layer 14 around the ball 12 in contact with the valve stem 13 and the ear shaft 7 can reduce the torque generated when the ball 12 rotates, making it easy to rotate. A handle 15 is fixed to the top of the outer side of the valve stem 13, and a gear 16 is fixed to the surface of the valve stem 13. At the same time, the gear 16 is rotatably connected to the inside of a fixing frame 17. The fixing frame 17 is fixed to the top of the main valve body 1, and a fixing block 18 is fixed to the front end of the fixing frame 17. At the same time, a bolt 19 is threadedly connected to the fixing block 18, and the bolt 19 passes through the fixing block 18. A connecting rod 20 is slidably connected to the inside of the fixing block 18. The connecting rod 20 is connected to the first spring 21, and the first spring 21 is fixed inside the fixing block 18. At the same time, the connecting rod 20 passes through the fixing frame 17. By rotating the bolt 19 on the outside of the fixing block 18, it moves toward the inside of the fixing block 18 to press against the connecting rod 20 inside the fixing block 18, driving the connecting rod 20 to move downward, and at the same time driving the first trapezoidal block 2201 inside the fixing frame 17 to move downward, so as to facilitate the fixation of the gear 16 on the valve stem 13 and prevent the handle 15 at the top of the valve stem 13 from driving the valve stem 13 and the ball 12 to rotate when impacted, thereby affecting the use.

[0030] like Figure 1 , Figure 3 , Figure 5 and Figure 6As shown, a limiting mechanism 22 for preventing the valve stem 13 from rotating is installed inside the fixed frame 17, and the limiting mechanism 22 includes a first trapezoidal block 2201, a second spring 2202, a sliding plate 2203, a second trapezoidal block 2204, a limiting plate 2205 and a rack 2206. The first trapezoidal block 2201 is slidably connected to the inside of the fixed frame 17, and the first trapezoidal block 2201 is connected to the connecting rod 20. Second springs 2202 are fixed at both ends of the inner wall of the fixed frame 17, and the second spring 2202 is connected to the sliding plate 2203. At the same time, the sliding plate 2203 is slidably connected to the two ends of the interior of the fixed frame 17. The second springs 2202 are provided with four groups, and they are symmetrically arranged, so that the elastic force of the second springs 2202 can drive the two groups of sliding plates 2203 to move toward each other, and at the same time drive the two groups of sliding plates 2203 The limit plate 2205 moves towards each other, so that the rack 2206 on its surface is stuck on the gear 16, which is convenient for fixing the gear 16 and the valve stem 13 to prevent movement. The limit plate 2205 is fixed on the sliding plate 2203, and the rack 2206 is fixed on the surface of the limit plate 2205. At the same time, the rack 2206 is meshed and connected to the two ends of the gear 16. The first trapezoidal block 2201 and the second trapezoidal block 2204 are engaged. When the first trapezoidal block 2201 moves downward under the drive of the connecting rod 21, it will resist the second trapezoidal block 2204 on the sliding plates 2203 at both ends of the fixed frame 17, driving the two groups of second trapezoids 2204 and the sliding plate 2203 to move relative to each other, so that the rack 2206 on its surface is separated from the gear 16, which is convenient for rotating the valve stem 13 and the ball 12, and convenient for opening and closing the valve.

[0031] Working principle: When using the ultra-high pressure, high temperature and low torque metal hard-sealed ball valve, first connect the side valve bodies 2 at both ends of the main valve body 1 to the pipeline. When the valve needs to be opened, first turn the bolt 19 on the fixed block 18 clockwise to move it toward the inside of the fixed block 18 to press against the connecting rod 20, driving the connecting rod 20 and the first trapezoidal block 2201 inside the fixed frame 17 to move downward to press against the second trapezoidal block 2204 on the sliding plates 2203 at both ends, driving the second trapezoidal block 2204 and the sliding plate 2203 to move relative to each other, and at the same time, the limit plate 2205 on the sliding plate 2203 moves relative to each other, so that the rack 2206 on its surface is aligned with the gear rack 2206 on the fixed frame 17. The gear 16 on the valve stem 13 is separated, and then the handle 15 on the top of the valve stem 13 is turned to drive the valve stem 13 and the gear 16 to rotate, and at the same time drive the ball 12 inside the main valve body 1 to rotate and open the valve. During the rotation of the ball 12, the self-lubricating layer 14 at both ends of the ball 12 can reduce the torque generated when the ball 12 rotates, making it easy to rotate. When the valve stem 13 needs to be fixed, the bolt 19 is turned counterclockwise to move it to the outside of the fixing block 18 and separate from the connecting rod 20. Then, under the elastic force of the first spring 21 inside the fixing block 18, the connecting rod 20 is driven to retract into the inside of the fixing block 18, and at the same time, the first ladder is driven The trapezoidal block 2201 is separated from the second trapezoidal block 2204, and the two sets of sliding plates 2203 are driven to move relative to each other under the elastic force of the second springs 2202 at both ends of the fixing frame 17, so that the racks 2206 on the limit plates 2205 are stuck at both ends of the gear 16, thereby fixing the gear 16 and the valve stem 13 to prevent movement. When high-temperature fluid is transported in the pipeline during use, heat can be dissipated through the heat conducting sheet 5 at the bottom of the side valve body 2, and the temperature sensor 4 detects the temperature and transmits the signal to the controller 8. The controller 8 controls the condenser 6 at the bottom of the ear shaft 7 to exchange heat with the heat conducting sheet 5, which is convenient for improving the heat dissipation efficiency. The valve seat sealing ring 11 made of Deweilong material can improve the corrosion resistance and hardness, and ensure a certain degree of elasticity, so that the sealing surface between the ball 12 and the valve seat sealing ring 11 is tightly fitted and elastic, so that it can adapt to high-pressure and low-pressure conditions to achieve sealing. After long-term use, grease can be injected into the grease injection grooves 9 around the main valve body 1 to flow to the inner cavity of the main valve body 1 for grease injection, improve the surface smoothness of the ball 12, and reduce the torque when the valve is opened and closed under pressure. This completes the entire operation, and the contents not described in detail in this manual belong to the existing technology known to professional and technical personnel in this field.

[0032] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the protection content of the present invention.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An ultra-high pressure, high temperature and low torque metal hard seal ball valve, comprising a main valve body (1) and a limit mechanism (22), characterized in that: A main valve body (1), side valve bodies (2) are fixed at both ends of the main valve body (1), and an observation port (3) is fixed on the upper surface of the side valve body (2), and the observation port (3) penetrates the inner wall of the side valve body (2), a temperature sensor (4) is fixed on the left side of the side valve body (2), and a heat conducting plate (5) is fixed at the bottom of the valve body (2), and the heat conducting plate (5) is connected to a condenser (6), and the condenser (6) is fixed at the bottom of an ear shaft (7), and the ear shaft (7) is fixed at The main valve body (1) is provided at the bottom thereof, a controller (8) is fixed on the surface of the main valve body (1), and grease injection grooves (9) are provided around the outer side of the main valve body (1), the grease injection grooves (9) penetrate the interior of the main valve body (1), and a grease injection valve (10) is installed on the grease injection grooves (9), and a valve seat sealing ring (11) is fixed inside the main valve body (1), a ball (12) is rotatably connected to the valve seat sealing ring (11), and the upper and lower ends of the ball (12) are respectively connected to the ear shaft (7) The valve stem (13) is connected to a valve rod (13), the valve stem (13) is rotatably connected to the top of the main valve body (1), and the upper and lower ends of the main valve body (1) are fixed with self-lubricating layers (14), and the self-lubricating layer (14) is connected to the ball (12), a handle (15) is fixed to the top of the outer side of the valve stem (13), and a gear (16) is fixed to the surface of the valve stem (13), and the gear (16) is rotatably connected to the inside of a fixing frame (17), the fixing frame (17) is fixed to the top of the main valve body (1), and a fixing block (18) is fixed to the front end of the fixing frame (17), and a bolt (19) is threadedly connected to the fixing block (18), and the bolt (19) passes through the fixing block (18), and the fixing block (18) is slidably connected to a connecting rod (20), the connecting rod (20) is connected to a first spring (21), and the first spring (21) is fixed to the inside of the fixing block (18), and the connecting rod (20) passes through the fixing frame (17); A limiting mechanism (22), the limiting mechanism (22) being used to prevent the valve stem (13) from rotating, and being installed inside the fixing frame (17); the limiting mechanism (22) comprising a first trapezoidal block (2201), a second spring (2202), a sliding plate (2203), a second trapezoidal block (2204), a limiting plate (2205) and a rack (2206); the first trapezoidal block (2201) is slidably connected inside the fixing frame (17), and the first trapezoidal block (2201) is connected to the connecting rod (20); and two ends of the inner wall of the fixing frame (17) are fixed with The second spring (2202) is connected to the sliding plate (2203), and the sliding plate (2203) is slidably connected to the two ends of the interior of the fixed frame (17). A limit plate (2205) is fixed on the sliding plate (2203), and a rack (2206) is fixed on the surface of the limit plate (2205), and the rack (2206) is meshed and connected to the two ends of the gear (16); the observation port (3) is provided with two groups, and they are symmetrical; the valve seat sealing ring (11) is made of Deweilong material, and the valve seat sealing ring (11) is elastically designed.

2. The ultra-high pressure, high temperature and low torque metal hard seal ball valve according to claim 1, characterized in that: The temperature sensor (4), the condenser (6) and the controller (8) are all connected by wires.

3. The ultra-high pressure, high temperature and low torque metal hard seal ball valve according to claim 1, characterized in that: The grease injection grooves (9) and grease injection valves (10) are each provided in four groups, and are all symmetrically arranged.

4. The ultra-high pressure, high temperature and low torque metal hard seal ball valve according to claim 1, characterized in that: The self-lubricating layer (14) is made of 304 stainless steel and PTFE flexible material.

5. The ultra-high pressure, high temperature and low torque metal hard seal ball valve according to claim 1, characterized in that: The first trapezoidal block (2201) and the second trapezoidal block (2204) are connected by snap-fitting.

6. The ultra-high pressure, high temperature and low torque metal hard seal ball valve according to claim 1, characterized in that: The second springs (2202) are provided in four groups and are symmetrically arranged.

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