High-temperature-resistant sealing control butterfly valve

Abstract

The invention discloses a high-temperature-resistant sealing control butterfly valve which comprises a valve body, a flow guide cavity, a metal valve plate, a structure strengthening ring, reinforcing ribs, a heat insulation rubber pad, a flow slowing protrusion, a valve rod, a liquid cooling heat dissipation pipe, a cooling liquid groove, a booster water pump and heat dissipation fins. Liquid cooling heat dissipation pipes evenly clamped on the outer side wall of the valve body can communicate with a booster water pump in a cooling liquid groove to be matched with heat dissipation fins on the outer side face of the valve body to rapidly cool the butterfly valve, and part deformation and leakage caused by the fact that the temperature of the butterfly valve is too high are effectively prevented; the high temperature resistance and deformation resistance of the butterfly valve are effectively improved, the sealing performance of the butterfly valve is stable, the front side face and the rear side face of the metal valve plate are wrapped with heat insulation rubber pads, the temperature influence of high temperature of a high-temperature medium on the valve plate is effectively reduced, and the flow speed of the high-temperature medium can be effectively reduced by evenly arranging flow slowing protrusions on the outer side faces of the heat insulation rubber pads. Therefore, the impact effect of high-temperature media on the butterfly valve is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valves, in particular to the technical field of a high-temperature-resistant sealing control butterfly valve. BACKGROUND

[0002] The butterfly valve is also called a flap valve, which is a simple structure regulating valve. The valve core of the butterfly valve is a circular valve plate, which can rotate along the vertical shaft of the pipeline axis. When the valve plate plane is consistent with the pipeline axis, it is fully open. When the valve plate plane is perpendicular to the pipeline axis, it is fully closed. The valve can be used to control the flow of air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media, etc. It plays a role in controlling the flow of fluid in the pipeline.

[0003] A novel high-temperature-resistant hard sealing butterfly valve is disclosed in Chinese Patent No. 201821590437.5, which comprises a valve body, a bottom sleeve column installed below the valve body, a top pipe installed above the valve body, a metal shell installed above the top pipe, a servo motor installed inside the metal shell, annular side plates installed on both sides of the valve body, sealing rubber rings installed on the outer surfaces of the annular side plates, and connecting fixing holes provided on the inner sides of the annular side plates and penetrating the sealing rubber rings. In high-temperature conditions, the sealing rubber ring is prone to deformation, which may cause leakage risk during later use and reduce the safety of the butterfly valve.

[0004] A metal sealing butterfly valve is disclosed in Chinese Patent No. 201711115081.X, which comprises a valve body, a valve rod, a butterfly plate, a metal sealing ring, and a bottom cover. The valve body is integrated with a valve seat. The upper end of the valve rod penetrates the valve body and is connected with an execution device. The butterfly plate is fixed on the valve rod, and the axial center of the butterfly plate and the center of the valve body rotation shaft form an axial eccentricity. The radial center of the butterfly plate and the center of the valve body passage form a radial eccentricity. The metal sealing ring is a conical surface, which forms a sealing pair with the sealing surface of the valve seat. The center line of the sealing pair and the radial center of the butterfly plate form an eccentric angle. The bottom cover is located at the bottom of the valve body and the valve rod. During the working process of the butterfly valve, the valve plate cannot be protected. Due to the long-term impact of the medium, the valve plate is easily scratched by impurities inside the medium, which may cause cracking, damage or wear, resulting in damaged sealing performance and eventually leading to the failure of the sealing surface. The sealing stability is low.

[0005] Chinese Patent Application No. 202020941518.6 discloses a novel high-temperature resistant hard-seal butterfly valve, comprising: a sealing steel ring surface, a fixed support, a handle wheel, a pneumatic cabinet, a pneumatic valve, a limit switch feedback device, a drive shaft, and a high-temperature resistant butterfly valve mechanism. The sealing steel ring surface and the high-temperature resistant butterfly valve mechanism are an integrated structure. The right end of the pneumatic cabinet is connected to the left end of the handle wheel, and the left end of the pneumatic cabinet is bonded to the right end of the limit switch feedback device. The lower end of the drive shaft is embedded in the upper end of the high-temperature resistant butterfly valve mechanism. During operation, the butterfly valve, through the flange, engages... The high-temperature resistant sealing ring can improve the overall hardness and sealing performance of the butterfly valve, avoiding metal deformation and aging after long-term use. The butterfly valve, together with the hard and dense butterfly plate, can completely block the water flow. When the valve shaft drives the connected dense butterfly plate, the lower end pressure cap provides a support point and the upper guide seat drives the rotation, allowing water to flow between the two ends, thus optimizing the cooling and heat dissipation effect. The butterfly valve in the above application does not have any auxiliary heat dissipation structure or liquid cooling structure during use, resulting in poor heat dissipation effect.

[0006] In butterfly valve technology, the sealing method mostly adopts a sealing structure, and the sealing materials are rubber, polytetrafluoroethylene, etc. Due to the limitations of the structural characteristics, if the medium temperature is too high, ordinary rubber or plastic sealing materials will be affected and lose their sealing performance. They are not suitable for high temperature and high pressure industries, have a short service life, and have a slow opening and closing speed, making them inconvenient to use. The single-layer sealing ring is fixed on the valve plate. When the valve plate is in the normally open state, the medium forms a frontal scouring on its sealing surface, directly affecting the sealing performance. When butterfly valves are in use, they are usually affected by the high temperature of the internal fluid, making it difficult for the butterfly valve temperature to drop. Long-term exposure to high temperature will reduce the service life of the butterfly valve. The sealing effect is insufficient after long-term use, and the valve plate is prone to deformation due to high temperature, resulting in poor sealing performance of the butterfly valve. Summary of the Invention

[0007] The purpose of this invention is to solve the problems in the prior art and propose a high-temperature resistant sealing control butterfly valve, which can effectively prevent component deformation and leakage caused by excessive butterfly valve temperature, improve the butterfly valve's high temperature resistance and deformation resistance, ensure stable butterfly valve sealing performance, and extend the butterfly valve's service life.

[0008] To achieve the above objectives, this invention proposes a high-temperature resistant sealing control butterfly valve, comprising a valve body, a flow guiding cavity, a metal valve plate, structural reinforcing rings, reinforcing ribs, a heat-insulating rubber pad, a flow-slowing protrusion, a valve stem, a liquid-cooled heat dissipation pipe, a coolant tank, a booster pump, and heat dissipation fins. The valve body has a flow guiding cavity inside, and a metal valve plate is disposed within the flow guiding cavity. Several concentric structural reinforcing rings are arranged around the side of the metal valve plate, and adjacent structural reinforcing rings are connected by several evenly arranged reinforcing ribs. The outer side of the metal valve plate is covered with heat insulation material. The rubber pad has several flow-slowing protrusions evenly distributed on its outer surface. A valve stem is axially inserted through the center of the metal valve plate. The bottom end of the valve stem is sealed at the bottom of the flow guide cavity, and the top end of the valve stem is sealed to a valve seat. The valve body is a metal valve body with high thermal conductivity. Liquid cooling heat dissipation pipes are evenly sandwiched on the outer wall of the valve body. Both ends of the liquid cooling heat dissipation pipes are connected to a coolant tank. A booster water pump is installed in the coolant tank and is connected to the liquid cooling heat dissipation pipes. Several heat dissipation fins are evenly distributed around the outer surface of the valve body.

[0009] Preferably, there are multiple structural reinforcing rings, the width of the structural reinforcing rings gradually decreases from the outside to the inside, the height of the structural reinforcing rings gradually decreases from the outside to the inside, and reinforcing ribs are radially arranged between adjacent structural reinforcing rings, the height of the two ends of the reinforcing ribs being flush with the height of the corresponding end of the structural reinforcing ring.

[0010] Preferably, the front and rear sides of the metal valve plate are symmetrically surrounded by a plurality of concentric structural reinforcing rings, and the metal valve plate, the structural reinforcing rings and the reinforcing ribs are an integral structure, with the width of the reinforcing ribs gradually decreasing from the outside to the inside.

[0011] Preferably, the heat-insulating rubber pad is a high-temperature resistant elastic rubber pad, which is wrapped around the outer side of the structural reinforcing ring. The heat-insulating rubber pad is provided with limiting grooves corresponding to the positions of the structural reinforcing ring and the reinforcing ribs. The structural reinforcing ring and the reinforcing ribs are fitted into the limiting grooves one-to-one. The outer side of the heat-insulating rubber pad is a smooth plane, and the shape of the slow-flow protrusion is hemispherical.

[0012] Preferably, the heat-insulating rubber pad is a high-temperature resistant hard rubber pad, which is adhered to the outer side of the structural reinforcing ring. The flow-slowing protrusion and the heat-insulating rubber pad are an integral structure, and the heat-insulating rubber pad does not contact the valve body.

[0013] Preferably, the liquid cooling heat pipe is a thermally conductive copper pipe, and a spiral heat-conducting groove is uniformly arranged around the outer wall of the valve body. The liquid cooling heat pipe is interference-fitted and fixedly embedded in the spiral heat-conducting groove. The liquid cooling heat pipe and the heat dissipation fins do not contact each other. The heat dissipation fins are copper-plated aluminum fins. The heat dissipation fins are fixedly welded to the outer side of the valve body. There are multiple heat dissipation fins. Multiple heat dissipation venting holes are uniformly arranged through the heat dissipation fins. The heat dissipation venting holes of adjacent heat dissipation fins are staggered.

[0014] Preferably, a number of temperature sensors are fixedly installed inside the valve body. The temperature sensors are connected to a booster pump, which is a continuously variable speed (CVT) pump. The booster pump is submerged below the surface of the coolant tank. The booster pump is connected to the inlet end of the liquid cooling pipe. The outlet end of the liquid cooling pipe is located inside the coolant tank. A CVT fan that exhausts air from top to bottom is installed at the lower end of the heat dissipation fins. The CVT fan is connected to the temperature sensors.

[0015] Preferably, a fixed flange is provided on the outer side of the openings at both ends of the flow guide cavity. Several fixed threaded holes are evenly arranged around the flange. A sealing ring groove is arranged around the outer end of the fixed flange. An elastic sealing gasket is detachably provided in the sealing ring groove.

[0016] Preferably, the heat dissipation fins and the valve body are an integral structure, and the outer surface of the heat dissipation fins is uniformly provided with a thermally conductive copper plating layer.

[0017] The beneficial effects of this invention are as follows: By combining the valve body, flow guide cavity, metal valve plate, structural reinforcing ring, reinforcing ribs, heat-insulating rubber pad, flow-slowing protrusion, valve stem, liquid-cooled heat dissipation pipe, coolant tank, booster pump, and heat dissipation fins, and through experimental optimization, this invention enables rapid cooling of the butterfly valve through the liquid-cooled heat dissipation pipes evenly sandwiched on the outer wall of the valve body, which connect to the booster pump in the coolant tank, in conjunction with the heat dissipation fins on the outer side of the valve body. Simultaneously, a temperature sensor fixed inside the valve body continuously monitors the butterfly valve's temperature, thereby adjusting the coolant flow rate controlled by the booster pump to maintain... To ensure the butterfly valve's temperature remains within a reasonable range, effectively preventing component deformation and leakage caused by excessively high temperatures, the metal valve plate, combined with structural reinforcement rings and ribs on the sides, effectively enhances the butterfly valve's high-temperature resistance and deformation resistance. The butterfly valve's sealing performance is stable. Thermal insulation rubber pads covering the front and rear sides of the metal valve plate effectively reduce the impact of high-temperature media on the valve plate's temperature. Evenly distributed flow-damping protrusions on the outer surface of the thermal insulation rubber pads effectively reduce the flow rate of the high-temperature media, thereby reducing the impact of the high-temperature media on the butterfly valve and extending its service life.

[0018] The features and advantages of the present invention will be described in detail through embodiments and in conjunction with the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of a high-temperature resistant sealing control butterfly valve according to the present invention; Figure 2 This is a schematic diagram of the metal valve plate structure of a high-temperature resistant sealing control butterfly valve according to the present invention; Figure 3 This is a partial structural diagram of structure A of a high-temperature resistant sealing control butterfly valve according to the present invention; Figure 4 This is a partial structural diagram of structure B of a high-temperature resistant sealing control butterfly valve according to the present invention.

[0020] In the diagram: 1-Valve body, 2-Flow guide cavity, 3-Metal valve plate, 4-Structural reinforcement ring, 5-Reinforcing rib, 6-Insulating rubber pad, 7-Slow flow protrusion, 8-Valve stem, 9-Liquid cooling heat pipe, 10-Coolant tank, 11-Booster water pump, 12-Heat dissipation fins, 13-Temperature sensor, 14-Fixing flange, 15-Limiting groove, 16-Spiral heat conduction groove, 17-Heat dissipation air guide hole, 18-Continuously variable speed fan, 19-Fixing threaded hole, 20-Sealing ring groove. Detailed Implementation

[0021] Example 1 See Figure 1 , Figure 2 , Figure 3 and Figure 4This invention discloses a high-temperature resistant sealing control butterfly valve, comprising a valve body 1, a flow guiding cavity 2, a metal valve plate 3, structural reinforcing rings 4, reinforcing ribs 5, a heat-insulating rubber pad 6, flow-slowing protrusions 7, a valve stem 8, a liquid-cooled heat dissipation pipe 9, a coolant tank 10, a booster pump 11, and heat dissipation fins 12. The valve body 1 has a flow guiding cavity 2 inside, and a metal valve plate 3 is disposed within the flow guiding cavity 2. Several concentric structural reinforcing rings 4 are arranged around the side of the metal valve plate 3, and adjacent structural reinforcing rings 4 are connected by several evenly arranged reinforcing ribs 5. A heat-insulating rubber pad 6 is covered on the outer side of the metal valve plate 3, and several flow-slowing protrusions 7 are evenly arranged on the outer surface of the heat-insulating rubber pad 6. A valve stem 8 is axially inserted through the center of the metal valve plate 3. The bottom end of the valve stem 8 is sealed at the bottom of the guide cavity 2, and the top end of the valve stem 8 is sealed to a valve seat. The valve body 1 is a metal valve body with high thermal conductivity. Liquid cooling heat dissipation pipes 9 are uniformly sandwiched on the outer side wall of the valve body 1. The two ends of the liquid cooling heat dissipation pipes 9 are connected to the coolant tank 10. A booster water pump 11 is installed in the coolant tank 10. The booster water pump 11 is connected to the liquid cooling heat dissipation pipes 9. Several heat dissipation fins 12 are uniformly arranged around the outer side of the valve body 1. There are multiple structural reinforcing rings 4. The width and height of the structural reinforcing rings 4 gradually decrease from the outside to the inside. Reinforcing ribs 5 are radially arranged between adjacent structural reinforcing rings 4. The height of the inner and outer ends of the reinforcing ribs 5 is equal to the height of the corresponding ends. The structural reinforcing rings 4 are flush with each other. Several concentric structural reinforcing rings 4 are symmetrically arranged around the front and rear sides of the metal valve plate 3. The metal valve plate 3, structural reinforcing rings 4, and reinforcing ribs 5 are an integral structure. The width of the reinforcing ribs 5 gradually decreases from the outside to the inside. The heat-insulating rubber pad 6 is a high-temperature resistant elastic rubber pad. The heat-insulating rubber pad 6 covers the outer surface of the structural reinforcing rings 4. Limiting grooves 15 are provided on the heat-insulating rubber pad 6 corresponding to the positions of the structural reinforcing rings 4 and reinforcing ribs 5. The structural reinforcing rings 4 and reinforcing ribs 5 are fitted into the limiting grooves 15 one-to-one. The outer surface of the heat-insulating rubber pad 6 is a smooth plane. The slow-flow protrusion 7 is hemispherical in shape. The liquid-cooled heat dissipation pipe 9 is a heat-conducting copper pipe. The valve... A spiral heat-conducting groove 16 is evenly arranged around the outer wall of the valve body 1. The liquid-cooled heat dissipation pipe 9 is interference-fitted and fixedly embedded in the spiral heat-conducting groove 16. The liquid-cooled heat dissipation pipe 9 and the heat dissipation fins 12 do not contact each other. The heat dissipation fins 12 are copper-plated aluminum fins. The heat dissipation fins 12 are fixedly welded to the outer side of the valve body 1. There are multiple heat dissipation fins 12. Multiple heat dissipation venting holes 17 are evenly arranged through the heat dissipation fins 12. The heat dissipation venting holes 17 of adjacent heat dissipation fins 12 are staggered. Several temperature sensors 13 are fixedly installed inside the valve body 1. The temperature sensors 13 are connected to a booster water pump 11. The booster water pump 11 is a continuously variable speed water pump. The booster water pump 11 is submerged below the liquid surface of the coolant tank 10.The booster pump 11 is connected to the inlet end of the liquid-cooled heat sink 9, and the outlet end of the liquid-cooled heat sink 9 is located in the coolant tank 10. A continuously variable speed fan 18, which exhausts air from top to bottom, is installed at the lower end of the heat sink fins 12. The continuously variable speed fan 18 is connected to the temperature sensor 13. Fixed flanges 14 are installed on the outer sides of the openings at both ends of the flow guide cavity 2. Several fixed threaded holes 19 are evenly arranged around the fixed flanges 14. A sealing ring groove 20 is arranged around the outer end of the fixed flanges 14, and an elastic sealing gasket is detachably installed inside the sealing ring groove 20.

[0022] Example 2 See Figure 1 , Figure 2 , Figure 3 and Figure 4This invention discloses a high-temperature resistant sealing control butterfly valve, comprising a valve body 1, a flow guiding cavity 2, a metal valve plate 3, structural reinforcing rings 4, reinforcing ribs 5, a heat-insulating rubber pad 6, flow-slowing protrusions 7, a valve stem 8, a liquid-cooled heat dissipation pipe 9, a coolant tank 10, a booster pump 11, and heat dissipation fins 12. The valve body 1 has a flow guiding cavity 2 inside, and a metal valve plate 3 is disposed within the flow guiding cavity 2. Several concentric structural reinforcing rings 4 are arranged around the side of the metal valve plate 3, and adjacent structural reinforcing rings 4 are connected by several evenly arranged reinforcing ribs 5. A heat-insulating rubber pad 6 is covered on the outer side of the metal valve plate 3, and several flow-slowing protrusions 7 are evenly arranged on the outer surface of the heat-insulating rubber pad 6. An axially penetrating part is disposed at the center of the metal valve plate 3. A valve stem 8 is provided, with its bottom end sealed at the bottom of the flow guide cavity 2 and its top end sealed to a valve seat. The valve body 1 is a highly thermally conductive metal valve body. Liquid cooling heat dissipation pipes 9 are uniformly sandwiched on the outer wall of the valve body 1. Both ends of the liquid cooling heat dissipation pipes 9 are connected to a coolant tank 10. A booster water pump 11 is installed in the coolant tank 10 and is connected to the liquid cooling heat dissipation pipes 9. Several heat dissipation fins 12 are uniformly arranged around the outer side of the valve body 1. There are multiple structural reinforcing rings 4. The width and height of the structural reinforcing rings 4 gradually decrease from the outside to the inside. Reinforcing ribs 5 are radially arranged between adjacent structural reinforcing rings 4. The height of the end is flush with the height of the corresponding structural reinforcing ring 4. Several concentric structural reinforcing rings 4 are symmetrically arranged around the front and rear sides of the metal valve plate 3. The metal valve plate 3, structural reinforcing rings 4, and reinforcing ribs 5 are an integral structure. The width of the reinforcing ribs 5 gradually decreases from the outside to the inside. The heat-insulating rubber pad 6 is a high-temperature resistant hard rubber pad, adhered to the outer surface of the structural reinforcing ring 4. The slow-flow protrusion 7 and the heat-insulating rubber pad 6 are an integral structure. The heat-insulating rubber pad 6 does not contact the valve body 1. Several temperature sensors 13 are fixedly installed inside the valve body 1. The temperature sensors 13 are connected to the booster pump 11, which is a continuously variable speed pump. The booster pump 11 is immersed in… The booster pump 11 is connected to the inlet end of the liquid cooling pipe 9, which is not submerged in the coolant tank 10. The outlet end of the liquid cooling pipe 9 is located inside the coolant tank 10. A continuously variable speed fan 18 with airflow from top to bottom is provided at the lower end of the heat dissipation fin 12. The continuously variable speed fan 18 is connected to the temperature sensor 13. Fixed flanges 14 are provided on the outer sides of the openings at both ends of the flow guide cavity 2. Several fixed threaded holes 19 are evenly arranged around the fixed flange 14. A sealing ring groove 20 is arranged around the outer end of the fixed flange 14. An elastic sealing gasket is detachably provided in the sealing ring groove 20. The heat dissipation fin 12 and the valve body 1 are an integral structure. A thermally conductive copper plating layer is evenly arranged on the outer surface of the heat dissipation fin 12.

[0023] Example 3 See Figure 1 , Figure 2 , Figure 3 and Figure 4This invention discloses a high-temperature resistant sealing control butterfly valve, comprising a valve body 1, a flow guiding cavity 2, a metal valve plate 3, structural reinforcing rings 4, reinforcing ribs 5, a heat-insulating rubber pad 6, flow-slowing protrusions 7, a valve stem 8, a liquid-cooled heat dissipation pipe 9, a coolant tank 10, a booster water pump 11, and heat dissipation fins 12. The valve body 1 has a flow guiding cavity 2 inside, and the metal valve plate 3 is disposed within the flow guiding cavity 2. Several concentric structural reinforcing rings 4 are arranged around the side of the metal valve plate 3, and adjacent structural reinforcing rings 4 are connected by several evenly arranged reinforcing ribs 5. A heat-insulating rubber pad 6 is covered on the outer side of the metal valve plate 3, and several flow-slowing protrusions 7 are evenly arranged on the outer surface of the heat-insulating rubber pad 6. The metal valve plate 3 is axially penetrated at its center. The valve body 1 has a valve stem 8, the bottom end of which is sealed at the bottom of the flow guide cavity 2, and the top end of which is sealed to a valve seat. The valve body 1 is a metal valve body with high thermal conductivity. Liquid cooling heat dissipation pipes 9 are uniformly sandwiched on the outer side wall of the valve body 1. The two ends of the liquid cooling heat dissipation pipes 9 are connected to the coolant tank 10. A booster water pump 11 is installed in the coolant tank 10 and is connected to the liquid cooling heat dissipation pipes 9. Several heat dissipation fins 12 are uniformly arranged around the outer side of the valve body 1. There are multiple structural reinforcing rings 4. The width and height of the structural reinforcing rings 4 gradually decrease from the outside to the inside. Reinforcing ribs 5 are radially arranged between adjacent structural reinforcing rings 4. The height of both ends is flush with the height of the corresponding structural reinforcing ring 4. Several concentric structural reinforcing rings 4 are symmetrically arranged around the front and rear sides of the metal valve plate 3. The metal valve plate 3, structural reinforcing rings 4, and reinforcing ribs 5 are an integral structure. The width of the reinforcing ribs 5 gradually decreases from the outside to the inside. The heat-insulating rubber pad 6 is a high-temperature resistant hard rubber pad. The heat-insulating rubber pad 6 is adhered to the outer side of the structural reinforcing ring 4. The slow-flow protrusion 7 and the heat-insulating rubber pad 6 are an integral structure. The heat-insulating rubber pad 6 does not contact the valve body 1. The liquid-cooled heat dissipation pipe 9 is a heat-conducting copper pipe. Spiral heat-conducting grooves 16 are evenly arranged around the outer wall of the valve body 1. The liquid-cooled heat dissipation pipe 9 is interference-fitted and fixedly embedded in the spiral heat-conducting grooves 16. The liquid cooling heat pipe 9 and the heat dissipation fins 12 do not contact each other. The heat dissipation fins 12 are copper-plated aluminum fins and are fixedly welded to the outer side of the valve body 1. There are multiple heat dissipation fins 12, and multiple heat dissipation and air guiding holes 17 are evenly distributed through each heat dissipation fin 12. The heat dissipation and air guiding holes 17 of adjacent heat dissipation fins 12 are staggered. Several temperature sensors 13 are fixedly installed inside the valve body 1. The temperature sensors 13 are connected to a booster water pump 11. The booster water pump 11 is a continuously variable speed water pump and is submerged below the liquid surface of the coolant tank 10. The booster water pump 11 is connected to the liquid inlet end of the liquid cooling heat pipe 9, and the liquid outlet end of the liquid cooling heat pipe 9 is located inside the coolant tank 10.A continuously variable speed fan 18, which exhausts air from top to bottom, is provided at the lower end of the heat dissipation fins 12. The continuously variable speed fan 18 is connected to the temperature sensor 13. A fixing flange 14 is provided on the outer side of the openings at both ends of the airflow guide cavity 2. Several fixing threaded holes 19 are evenly arranged around the fixing flange 14. A sealing ring groove 20 is arranged around the outer end of the fixing flange 14, and an elastic sealing gasket is detachably installed inside the sealing ring groove 20.

[0024] This invention combines a valve body 1, a flow guiding cavity 2, a metal valve plate 3, a structural reinforcing ring 4, reinforcing ribs 5, a heat-insulating rubber pad 6, a flow-slowing protrusion 7, a valve stem 8, a liquid-cooled heat dissipation pipe 9, a coolant tank 10, a booster pump 11, and heat dissipation fins 12. Through experimental optimization, the liquid-cooled heat dissipation pipe 9, evenly spaced on the outer wall of the valve body 1, connects to the booster pump 11 within the coolant tank 10, working in conjunction with the heat dissipation fins 12 on the outer side of the valve body 1 to rapidly cool the butterfly valve. Simultaneously, a temperature sensor 13 fixed inside the valve body 1 continuously senses the butterfly valve's temperature, thereby adjusting the control of the booster pump 11. The coolant flow rate ensures that the butterfly valve temperature remains within a reasonable range, effectively preventing component deformation and leakage caused by excessively high butterfly valve temperatures. The metal valve plate 3, in conjunction with the structural reinforcement ring 4 and reinforcing ribs 5 on the side, effectively improves the butterfly valve's high-temperature resistance and deformation resistance, ensuring stable sealing performance. The front and rear sides of the metal valve plate 3 are covered with heat-insulating rubber pads 6, effectively reducing the impact of high-temperature media on the valve plate temperature. The evenly distributed flow-slowing protrusions 7 on the outer surface of the heat-insulating rubber pads 6 effectively reduce the flow rate of the high-temperature media, thereby reducing the impact of the high-temperature media on the butterfly valve and extending its service life.

[0025] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the scope of protection of the present invention.

Claims

1. A high-temperature resistant sealing control butterfly valve, characterized in that: The valve body (1) includes a flow guide cavity (2), a metal valve plate (3), a structural reinforcement ring (4), reinforcing ribs (5), a heat insulation rubber pad (6), a flow-slowing protrusion (7), a valve stem (8), a liquid cooling heat pipe (9), a coolant tank (10), a booster pump (11), and heat dissipation fins (12). The flow guide cavity (2) is provided inside the valve body (1), and a metal valve plate (3) is provided inside the flow guide cavity (2). Several concentric structural reinforcement rings (4) are arranged around the side of the metal valve plate (3). Adjacent structural reinforcement rings (4) are connected by several evenly arranged reinforcing ribs (5). A heat insulation rubber pad (6) is provided on the outer side of the metal valve plate (3). The outer side of the rubber pad (6) is uniformly provided with several slow-flow protrusions (7). The center of the metal valve plate (3) is axially provided with a valve stem (8). The bottom end of the valve stem (8) is sealed at the bottom of the guide cavity (2). The top end of the valve stem (8) is sealed and connected to a valve seat. The valve body (1) is a metal valve body with high thermal conductivity. The outer side wall of the valve body (1) is uniformly sandwiched with liquid cooling heat dissipation pipes (9). The two ends of the liquid cooling heat dissipation pipes (9) are connected to the coolant tank (10). A booster water pump (11) is provided in the coolant tank (10). The booster water pump (11) is connected to the liquid cooling heat dissipation pipes (9). The outer side of the valve body (1) is uniformly surrounded by several heat dissipation fins (12).

2. The high-temperature resistant sealing control butterfly valve as described in claim 1, characterized in that: There are multiple structural reinforcing rings (4). The width of the structural reinforcing rings (4) gradually decreases from the outside to the inside. The height of the structural reinforcing rings (4) gradually decreases from the outside to the inside. Reinforcing ribs (5) are radially arranged between adjacent structural reinforcing rings (4). The height of the inner and outer ends of the reinforcing ribs (5) is flush with the height of the corresponding end of the structural reinforcing ring (4).

3. The high-temperature resistant sealing control butterfly valve as described in claim 1, characterized in that: The metal valve plate (3) is symmetrically surrounded by several concentric structural reinforcing rings (4). The metal valve plate (3), structural reinforcing rings (4) and reinforcing ribs (5) are an integral structure. The width of the reinforcing ribs (5) gradually decreases from the outside to the inside.

4. The high-temperature resistant sealing control butterfly valve as described in claim 1, characterized in that: The heat insulation rubber pad (6) is a high-temperature resistant elastic rubber pad. The heat insulation rubber pad (6) is wrapped around the outer side of the structural reinforcing ring (4). The heat insulation rubber pad (6) is provided with a limiting groove (15) corresponding to the position of the structural reinforcing ring (4) and the reinforcing rib (5). The structural reinforcing ring (4) and the reinforcing rib (5) are fitted into the limiting groove (15) in a one-to-one correspondence. The outer side of the heat insulation rubber pad (6) is a smooth plane. The shape of the slow-flow protrusion (7) is hemispherical.

5. The high-temperature resistant sealing control butterfly valve as described in claim 1, characterized in that: The heat insulation rubber pad (6) is a high-temperature resistant hard rubber pad. The heat insulation rubber pad (6) is adhered to the outer side of the structural reinforcement ring (4). The slow-flow protrusion (7) and the heat insulation rubber pad (6) are an integral structure. The heat insulation rubber pad (6) does not contact the valve body (1).

6. The high-temperature resistant sealing control butterfly valve as described in claim 1, characterized in that: The liquid cooling heat dissipation pipe (9) is a heat-conducting copper pipe. The outer wall of the valve body (1) is uniformly surrounded by a spiral heat-conducting groove (16). The liquid cooling heat dissipation pipe (9) is fixedly embedded in the spiral heat-conducting groove (16) with an interference fit. The liquid cooling heat dissipation pipe (9) and the heat dissipation fins (12) do not contact each other. The heat dissipation fins (12) are copper-plated aluminum fins. The heat dissipation fins (12) are fixedly welded to the outer side of the valve body (1). There are multiple heat dissipation fins (12). Multiple heat dissipation air guide holes (17) are uniformly arranged through the heat dissipation fins (12). The heat dissipation air guide holes (17) of adjacent heat dissipation fins (12) are staggered.

7. The high-temperature resistant sealing control butterfly valve as described in claim 1, characterized in that: The valve body (1) is equipped with several temperature sensors (13) fixed inside. The temperature sensors (13) are connected to the booster pump (11). The booster pump (11) is a continuously variable speed pump. The booster pump (11) is submerged below the liquid surface of the coolant tank (10). The booster pump (11) is connected to the inlet end of the liquid cooling heat pipe (9). The outlet end of the liquid cooling heat pipe (9) is located in the coolant tank (10). The lower end of the heat dissipation fins (12) is equipped with a continuously variable speed fan (18) that exhausts air from top to bottom. The continuously variable speed fan (18) is connected to the temperature sensors (13).

8. The high-temperature resistant sealing control butterfly valve as described in claim 1, characterized in that: The two ends of the flow guide cavity (2) are provided with a fixed flange (14) on the outside of the opening. A number of fixed threaded holes (19) are evenly arranged around the fixed flange (14). A sealing ring groove (20) is arranged around the outer end of the fixed flange (14). An elastic sealing gasket is detachably provided in the sealing ring groove (20).

9. A high-temperature resistant sealing control butterfly valve as described in claim 1, characterized in that: The heat dissipation fins (12) and the valve body (1) are an integral structure, and the outer surface of the heat dissipation fins (12) is uniformly provided with a thermally conductive copper plating layer.

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