High-pressure regulating valve with excellent heat dissipation performance and method thereof

Abstract

The invention discloses a high-pressure regulating valve with excellent heat dissipation performance and a method thereof, and belongs to the technical field of high-pressure air supply regulation, the high-pressure regulating valve comprises a valve body, the valve body is provided with a sealing assembly, a valve cage, a valve assembly, a filler assembly, a sealing heat dissipation assembly and an execution assembly, and the lower end of the execution assembly is provided with the valve assembly used for controlling fluid circulation. The sealing assembly, the valve cage, the valve assembly, the packing assembly and the sealing heat dissipation assembly are located on the inner side of the valve body. The valve cage comprises a valve cage bottom piece, a plurality of valve cage middle pieces, a valve cage upper cover and a valve cage gland. By means of the mode, through the arrangement of the valve cage middle piece, fluid scouring and cavitation erosion are relieved, and the service life of equipment is prolonged; through the arrangement of the inclined surface of the self-sealing ring and the elastic strain groove, the sealing effect of the self-sealing ring can be improved when the stuffing box receives pressure, and leakage of fluid is avoided; through the arrangement of the filler box, the filler gasket, the filler and the filler pressing sleeve, the heat transfer efficiency is improved, and the heat dissipation effect is improved through the cooperation of the cooling fins.

Description

Technical Field

[0001] The present invention relates to the technical field of high-pressure gas supply regulation, and in particular to a high-pressure regulating valve with excellent heat dissipation performance and a method thereof. Background Art

[0002] The steam turbine high-pressure gas supply station is an important facility that provides high-pressure gas to the steam turbine. In order to ensure that the gas pressure entering the steam turbine is within the safe and designed operating range, a high-pressure regulating valve is usually used to control the gas flow and pressure, which is crucial to improving the efficiency of the equipment and protecting the system.

[0003] For example, Chinese patent application CN115823265A discloses an electric high-pressure water supply regulating valve, comprising a valve body, a transmission rod rotatably mounted on a valve cover, a valve sleeve seat being threadedly mounted on the threaded rod, a valve core being fixedly mounted on the bottom of the valve sleeve seat by means of fixing screws, a fixed plate being fixedly connected to the upper surface of the valve body, a valve cover being fixedly mounted on the fixed plate by means of fixing screws, a transmission mechanism being arranged on the valve cover, the driving mechanism comprising a transmission rod, the transmission rod rotatably mounted on the valve cover, a first mounting plate being fixedly connected to the lower end of the transmission rod, a second mounting plate being fixedly mounted on the first mounting plate by means of a threaded column and a locking nut, a threaded rod being fixedly connected to the bottom of the second mounting plate, a valve sleeve seat being threadedly mounted on the threaded rod, a valve core being fixedly mounted on the bottom of the valve sleeve seat by means of fixing screws, and a surface of the valve sleeve seat being in contact with an inner wall of the valve body.

[0004] However, when the electric high-pressure water supply regulating valve is used, the scouring and cavitation of the valve core by the fluid in a high-pressure environment will cause damage to the valve core, reducing the service life of the valve, and the sealing effect is poor, the structure is too simple, and the heat dissipation effect is poor.

[0005] Based on this, the present invention designs a high-pressure regulating valve with excellent heat dissipation performance and a method thereof to solve the above-mentioned problem. Summary of the invention

[0006] In view of the above-mentioned shortcomings of the prior art, the present invention provides a high-pressure regulating valve with excellent heat dissipation performance and a method thereof.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A high-pressure regulating valve with excellent heat dissipation performance, comprising a valve body,

[0009] The valve body is equipped with a sealing assembly for sealing, a valve cage for reducing pressure, a valve assembly for controlling fluid circulation, a packing assembly for supporting and fixing, a sealing and heat dissipation assembly for sealing and heat dissipation, and an actuator assembly for controlling operation. The lower end of the actuator assembly is equipped with a valve assembly for controlling fluid circulation. The sealing assembly, the valve cage, the valve assembly, the packing assembly and the sealing and heat dissipation assembly are located inside the valve body. The upper end of the sealing assembly is connected to the valve cage and the valve assembly. The valve cage is located outside the lower end of the valve assembly. The packing assembly is located outside the upper end of the valve assembly. The sealing and heat dissipation assembly is connected to the packing assembly. An air inlet and an air outlet are provided inside the valve body.

[0010] The valve cage includes a valve cage bottom plate, multiple valve cage middle plates, a valve cage upper cover and a valve cage pressure cover. The valve cage bottom plate is installed on the upper end of the sealing assembly. Multiple valve cage middle plates are stacked and fixedly installed on the upper end of the valve cage bottom plate in sequence. The upper end of the topmost valve cage middle plate is fixedly installed with a valve cage upper cover. The inner side of the valve cage middle plate is connected to the valve assembly, the outer side of the valve cage upper cover is in contact with the inner wall of the valve body, the upper end of the valve cage upper cover is fixedly connected to the valve cage pressure cover, the valve cage pressure cover is fixedly connected to the valve body, and the upper end of the valve cage pressure cover is connected to the packing assembly.

[0011] Furthermore, a plurality of concentric annular grooves are provided on the inner side of the middle plate of the cage, and two adjacent annular grooves are connected via radial grooves, and the radial grooves of the outer ring and the inner ring are respectively connected to the air inlet and the air outlet.

[0012] Furthermore, the sealing assembly includes a valve seat self-sealing ring and a valve seat. The valve seat is abuttingly connected and arranged at the inner air outlet of the valve body. The valve seat self-sealing ring is embedded in the connection between the lower end of the valve seat and the valve body. The upper end of the valve seat is fixedly connected to the valve cage bottom plate, and the inner side of the valve seat is connected to the valve assembly.

[0013] Furthermore, the outer side of the lower end of the valve seat is inclined, the outer diameter of the valve seat gradually decreases from top to bottom, and the valve seat is inclined from the inner side of the sealing ring to match the inclined surface of the valve seat.

[0014] Furthermore, the valve assembly includes a valve disc, a valve stem and a nut. The lower end of the valve stem passes through the upper end of the valve disc. The lower end of the valve stem is provided with a thread for matching with the nut. The nut is located at the top inside the valve disc and is threadedly connected to the valve stem to fix the valve disc and the valve stem. The lower end of the valve disc is in contact with the self-sealing ring of the valve seat, the outer side of the valve disc is in contact with the middle piece of the valve cage, and the upper end of the valve stem is connected to the packing assembly and the actuator assembly.

[0015] Furthermore, the packing assembly includes a packing box, a packing gasket, a packing, a packing pressure plate seat, a packing pressure sleeve, a packing pressure plate and a plurality of first bolts, the lower end of the stuffing box is disc-shaped, the upper end of the stuffing box is cylindrical, the outer side of the lower end of the stuffing box is in contact with the valve body, the lower end of the stuffing box is in abutment with the valve cage pressure cover, the outer side of the stuffing box is connected to the sealing and heat dissipation component, the inner side of the stuffing box is slidably connected to the valve stem, the packing gasket and the packing are sequentially embedded between the inner side of the upper end of the stuffing box and the valve stem from bottom to top, the outer side of the upper end of the stuffing box is fixedly connected to the packing pressure plate seat, the packing pressure plate seat sleeve is arranged on the outer side of the valve stem, the upper end of the packing pressure plate seat is in abutment with the packing pressure plate, the lower end of the packing pressure plate seat is in abutment with the packing, the packing pressure plate seat and the packing pressure plate are fixedly connected by a plurality of first bolts, the lower end of the packing pressure plate seat is connected to the sealing and heat dissipation component, and the inner side of the packing pressure plate is in contact with the valve stem.

[0016] Furthermore, the sealing and heat dissipation assembly includes a self-sealing ring, six open rings, a heat sink, a second bolt and a cover plate. The self-sealing ring is embedded between the lower end of the stuffing box and the valve body, the upper end of the self-sealing ring is in contact with the six open rings, the inner and outer sides of the six open rings are in contact with the lower end side wall of the stuffing box and the inner side wall of the valve body respectively, the upper end of the six open rings is in contact with the cover plate, the cover plate and the lower end of the stuffing box are fixedly connected by multiple second bolts, the heat sink is sleeved on the outer side of the upper end of the stuffing box, and the upper end of the heat sink is in contact with the stuffing pressure plate seat.

[0017] Furthermore, the inner side of the lower end of the self-sealing ring is inclined, the inner diameter of the self-sealing ring gradually decreases from bottom to top, an elastic strain groove is opened on the outer side of the middle section of the self-sealing ring, the outer side of the lower end of the stuffing box is inclined to match the inclined surface of the self-sealing ring, and multiple groups of disc-shaped heat dissipation plates are arranged on the outer side of the heat sink.

[0018] Furthermore, the actuator assembly includes a bracket and an electric actuator, the bracket is fixedly mounted on the upper end of the valve body, the electric actuator is fixedly mounted on the upper end of the bracket, and the output end of the electric actuator is fixedly connected to the valve stem facing downward.

[0019] In order to better achieve the purpose of the present invention, the present invention also provides a method for using a high-pressure regulating valve with excellent heat dissipation performance, comprising the following steps:

[0020] Step 1: The fluid enters through the air inlet of the valve body and contacts the middle plate of the valve cage and is blocked by the valve disc when passing through the middle plate of the valve cage;

[0021] Step 2: Start the electric actuator, the electric actuator drives the valve stem to move upward, the valve stem drives the valve disc to move upward, the valve disc no longer blocks the fluid, the fluid enters the inner side of the valve cage middle piece through the valve cage middle piece, and flows out through the air outlet of the valve body;

[0022] Step 3: The fluid leaking between the valve disc and the stuffing box is driven upward when the valve disc moves upward. The fluid exerts pressure on the stuffing box, and the stuffing box exerts pressure on the self-sealing ring. The inclined surface between the stuffing box and the self-sealing ring allows part of the pressure to be dispersed outward. The force toward the outside causes the self-sealing ring to deform and fit more closely with the valve body and the stuffing box.

[0023] Step 4: The generated heat is conducted upward along the stuffing box, and when it is conducted to the heat sink, it is discharged through multiple heat sinks outside the heat sink. The stuffing box, stuffing gasket, stuffing, and stuffing sleeve accelerate heat conduction and support the valve stem. The stuffing plate seat and stuffing plate are used for fixing.

[0024] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting the plate in the cage, a circular flow is formed when the fluid passes through, thereby reducing the pressure, slowing down the scouring and cavitation of the fluid, and improving the service life of the equipment;

[0025] 2. By setting the inclined surface of the self-sealing ring and the elastic strain groove, the sealing effect of the self-sealing ring can be improved when the stuffing box is under pressure, thus avoiding leakage of the fluid;

[0026] 3. The heat transfer efficiency is improved by setting the stuffing box, stuffing gasket, stuffing and stuffing sleeve, and the heat dissipation effect is improved by setting the heat sink. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 A three-dimensional diagram of a high-pressure regulating valve with excellent heat dissipation performance according to the present invention;

[0029] Figure 2 It is a front view of a high-pressure regulating valve with excellent heat dissipation performance of the present invention;

[0030] Figure 3 It is a left view of a high-pressure regulating valve with excellent heat dissipation performance of the present invention;

[0031] Figure 4 Along Figure 3 A three-dimensional image with a portion cut away in the AA direction;

[0032] Figure 5 Figure 4 The enlarged view of point B in the middle;

[0033] Figure 6 A perspective view of a cage midpiece of the present invention.

[0034] The numbers in the figure represent:

[0035] 1. Valve body; 2. Sealing assembly; 21. Valve seat self-sealing ring; 22. Valve seat; 3. Valve cage; 31. Valve cage bottom plate; 32. Valve cage middle plate; 33. Valve cage upper cover; 34. Valve cage pressure cover; 4. Valve assembly; 41. Valve disc; 42. Valve stem; 43. Nut; 5. Packing assembly; 51. Packing box; 52. Packing gasket; 53. Packing; 54. Packing plate seat; 55. Packing sleeve; 56. Packing plate; 57. First bolt; 6. Sealing heat dissipation assembly; 61. Self-sealing ring; 62. Six open rings; 63. Heat sink; 64. Second bolt; 65. Cover plate; 7. Actuator assembly; 71. Bracket; 72. Electric actuator. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0037] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0038] Embodiment 1: In some embodiments, please refer to the drawings of the specification Figure 1-Figure 6 A high-pressure regulating valve with excellent heat dissipation performance comprises a valve body 1,

[0039] The valve body 1 is provided with a sealing assembly 2 for sealing, a valve cage 3 for reducing pressure, a valve assembly 4 for controlling fluid circulation, a packing assembly 5 for supporting and fixing, a sealing heat dissipation assembly 6 for sealing and heat dissipation, and an actuator 7 for controlling operation. The valve assembly 4 for controlling fluid circulation is installed at the lower end of the actuator 7. The sealing assembly 2, the valve cage 3, the valve assembly 4, the packing assembly 5 and the sealing heat dissipation assembly 6 are located on the inner side of the valve body 1. The upper end of the sealing assembly 2 is connected with the valve cage 3 and the valve assembly 4. The valve cage 3 is located on the outer side of the lower end of the valve assembly 4. The packing assembly 5 is located on the outer side of the upper end of the valve assembly 4. The sealing heat dissipation assembly 6 is connected with the packing assembly 5. An air inlet and an air outlet are provided on the inner side of the valve body 1.

[0040] The valve cage 3 includes a valve cage bottom plate 31, multiple valve cage middle plates 32, a valve cage upper cover 33 and a valve cage pressure cover 34. The valve cage bottom plate 31 is installed on the upper end of the sealing assembly 2, and multiple valve cage middle plates 32 are stacked and fixedly installed on the upper end of the valve cage bottom plate 31 in sequence. The upper end of the topmost valve cage middle plate 32 is fixedly installed with a valve cage upper cover 33. The inner side of the valve cage middle plate 32 is connected to the valve assembly 4, and the outer side of the valve cage upper cover 33 is in contact with the inner wall of the valve body 1. The upper end of the valve cage upper cover 33 is fixedly connected to the valve cage pressure cover 34, and the valve cage pressure cover 34 is fixedly connected to the valve body 1. The upper end of the valve cage pressure cover 34 is connected to the packing assembly 5.

[0041] When the high-pressure regulating valve with excellent heat dissipation performance is in normal use, the fluid enters through the air inlet of the valve body 1 and contacts the outer side of the valve cage middle piece 32, starting the actuator 7, and the actuator 7 drives the valve assembly 4 to operate and open. The fluid enters the inner side of the valve cage middle piece 32 through the valve cage middle piece 32 and flows out along the air outlet of the valve body 1. The fluid that leaks into the space between the valve assembly 4 and the packing assembly 5 is driven to move upward when the valve assembly 4 is in operation, exerting pressure on the packing assembly 5. The packing assembly 5 exerts pressure on the sealing heat dissipation assembly 6 to enhance the sealing effect. The generated heat is guided to the sealing heat dissipation assembly 6 through the packing assembly 5 and discharged. Through the setting of the valve cage middle piece 32, a circulation is formed when the fluid passes through, thereby reducing the pressure, slowing down the fluid scouring and cavitation, and improving the service life of the equipment.

[0042] Embodiment 2: In some embodiments, Figure 4 , Figure 5 and Figure 6 As shown, as a preferred embodiment of the present invention, a plurality of concentric annular grooves are provided on the inner side of the cage middle plate 32, two adjacent annular grooves are connected by radial grooves, and the radial grooves of the outer ring and the inner ring are connected to the air inlet and the air outlet respectively.

[0043] The sealing assembly 2 includes a valve seat self-sealing ring 21 and a valve seat 22. The valve seat 22 is abuttingly connected and arranged at the inner air outlet of the valve body 1. The valve seat self-sealing ring 21 is embedded in the connection between the lower end of the valve seat 22 and the valve body 1. The upper end of the valve seat 22 is fixedly connected to the valve cage bottom plate 31, and the inner side of the valve seat 22 is connected to the valve assembly 4.

[0044] The outer side of the lower end of the valve seat 22 is inclined, and the outer diameter of the valve seat 22 gradually decreases from top to bottom. The valve seat is inclined from the inner side of the sealing ring 21 to match the inclined surface of the valve seat 22 .

[0045] The valve assembly 4 includes a valve disc 41, a valve stem 42 and a nut 43. The lower end of the valve stem 42 passes through the upper end of the valve disc 41. The lower end of the valve stem 42 is provided with a thread for matching with the nut 43. The nut 43 is located at the top of the valve disc 41 and is threadedly connected to the valve stem 42 to fix the valve disc 41 and the valve stem 42. The lower end of the valve disc 41 is in contact with the valve seat self-sealing ring 21, the outer side of the valve disc 41 is in contact with the valve cage middle piece 32, and the upper end of the valve stem 42 is connected to the packing assembly 5 and the actuator assembly 7.

[0046] The packing assembly 5 includes a packing box 51, a packing gasket 52, a packing 53, a packing pressure plate seat 54, a packing sleeve 55, a packing pressure plate 56 and a plurality of first bolts 57. The lower end of the packing box 51 is disc-shaped, the upper end of the packing box 51 is cylindrical, the outer side of the lower end of the packing box 51 is in contact with the valve body 1, the lower end of the packing box 51 is in contact with the valve cage pressure cover 34, the outer side of the packing box 51 is connected to the sealing heat dissipation component 6, the inner side of the packing box 51 is slidably connected to the valve stem 42, and the packing gasket 52 and the packing 53 are connected from bottom to top. The upper portion is sequentially embedded between the inner side of the upper end of the stuffing box 51 and the valve stem 42, the outer side of the upper end of the stuffing box 51 is fixedly connected to the stuffing pressure plate seat 54, the stuffing pressure plate seat 54 is sleeved on the outer side of the valve stem 42, the upper end of the stuffing pressure plate seat 54 is in contact with the stuffing pressure plate 56, the lower end of the stuffing pressure plate seat 54 is in contact with the stuffing 53, the stuffing pressure plate seat 54 and the stuffing pressure plate 56 are fixedly connected by a plurality of first bolts 57, the lower end of the stuffing pressure plate seat 54 is connected to the sealing and heat dissipation assembly 6, and the inner side of the stuffing pressure plate 56 is in contact with the valve stem 42.

[0047] The sealing and heat dissipation assembly 6 includes a self-sealing ring 61, six open rings 62, a heat sink 63, a second bolt 64 and a cover plate 65. The self-sealing ring 61 is embedded between the lower end of the stuffing box 51 and the valve body 1. The upper end of the self-sealing ring 61 is in contact with the six open rings 62. The inner and outer sides of the six open rings 62 are in contact with the lower end side wall of the stuffing box 51 and the inner side wall of the valve body 1 respectively. The upper end of the six open rings 62 is in contact with the cover plate 65. The cover plate 65 and the lower end of the stuffing box 51 are fixedly connected by multiple second bolts 64. The heat sink 63 is sleeved on the outer side of the upper end of the stuffing box 51, and the upper end of the heat sink 63 is in contact with the stuffing pressure plate seat 54.

[0048] The inner side of the lower end of the self-sealing ring 61 is inclined, and the inner diameter of the self-sealing ring 61 gradually decreases from bottom to top. An elastic strain groove is opened on the outer side of the middle section of the self-sealing ring 61. The outer side of the lower end of the stuffing box 51 is inclined to match the inclined surface of the self-sealing ring 61, and multiple groups of disc-shaped heat dissipation plates are arranged on the outer side of the heat sink 63.

[0049] The actuator assembly 7 includes a bracket 71 and an electric actuator 72 . The bracket 71 is fixedly mounted on the upper end of the valve body 1 . The electric actuator 72 is fixedly mounted on the upper end of the bracket 71 . The output end of the electric actuator 72 is fixedly connected to the valve stem 42 downward.

[0050] When the high-pressure regulating valve with excellent heat dissipation performance is in normal use, the fluid enters through the air inlet of the valve body 1 and contacts the valve cage middle piece 32 and is blocked by the valve disc 41 when passing through the valve cage middle piece 32. The electric actuator 72 is started, and the electric actuator 72 drives the valve stem 42 to move upward, and the valve stem 42 drives the valve disc 41 to move upward. The valve disc 41 no longer blocks the fluid, and the fluid enters the inner side of the valve cage middle piece 32 through the valve cage middle piece 32 and flows out through the air outlet of the valve body 1. The fluid that leaks between the valve disc 41 and the stuffing box 51 is driven to move upward when the valve disc 41 moves upward. The fluid applies pressure to the stuffing box 51 upward, and the stuffing box 51 applies pressure to the self-sealing ring 61. The inclined surface between the stuffing box 51 and the self-sealing ring 61 is set so that part of the pressure is dispersed to the outside. The force toward the outside causes the self-sealing ring 61 to deform and fit more closely with the valve body 1 and the stuffing box 51. The generated heat is conducted upward along the stuffing box 51, and when it is conducted to the heat sink 63, it is discharged through multiple heat sinks outside the heat sink 63. The stuffing box 51, the stuffing gasket 52, the stuffing 53, and the stuffing sleeve 55 accelerate the heat conduction and support the valve stem 42. The stuffing plate seat 54 and the stuffing plate 56 are used for fixing. Through the setting of the inclined surface and the elastic strain groove of the self-sealing ring 61, the sealing effect of the self-sealing ring 61 can be improved when the stuffing box 51 receives pressure, thereby avoiding leakage of the fluid. Through the setting of the stuffing box 51, the stuffing gasket 52, the stuffing 53, and the stuffing sleeve 55, the heat transfer efficiency is improved, and the heat dissipation effect is improved in combination with the setting of the heat sink 63.

[0051] Embodiment 3: In some embodiments, Figure 1-Figure 6 As shown, as a preferred embodiment of the present invention, a method for using a high-pressure regulating valve with excellent heat dissipation performance comprises the following steps:

[0052] Step 1: The fluid enters through the air inlet of the valve body 1 and contacts the valve cage middle piece 32 and is blocked by the valve disc 41 when passing through the valve cage middle piece 32;

[0053] Step 2: Start the electric actuator 72, the electric actuator 72 drives the valve stem 42 to move upward, the valve stem 42 drives the valve disc 41 to move upward, the valve disc 41 no longer blocks the fluid, the fluid passes through the valve cage middle piece 32 into the inner side of the valve cage middle piece 32, and flows out through the air outlet of the valve body 1;

[0054] Step 3: The fluid leaking between the valve disc 41 and the stuffing box 51 is driven to move upward when the valve disc 41 moves upward, and the fluid exerts pressure on the stuffing box 51 upward, and the stuffing box 51 exerts pressure on the self-sealing ring 61. The inclined surface between the stuffing box 51 and the self-sealing ring 61 allows a part of the pressure to be dispersed outward, and the force toward the outside causes the self-sealing ring 61 to deform and fit more closely with the valve body 1 and the stuffing box 51;

[0055] Step 4: The generated heat is conducted upward along the stuffing box 51, and when it is conducted to the heat sink 63, it is discharged through multiple heat sinks outside the heat sink 63. The stuffing box 51, stuffing gasket 52, stuffing 53, and stuffing sleeve 55 accelerate heat conduction and support the valve stem 42. The stuffing plate seat 54 and the stuffing plate 56 are used for fixing.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-pressure regulating valve with excellent heat dissipation performance, comprising a valve body (1), characterized in that: The valve body (1) is provided with a sealing assembly (2) for sealing, a valve cage (3) for reducing pressure, a valve assembly (4) for controlling fluid flow, a packing assembly (5) for supporting and fixing, a sealing heat dissipation assembly (6) for sealing and heat dissipation, and an actuator (7) for controlling operation. The valve assembly (4) for controlling fluid flow is installed at the lower end of the actuator (7). The sealing assembly (2), the valve cage (3), the valve assembly (4), the packing assembly (5) and the sealing heat dissipation assembly (6) are located on the inner side of the valve body (1). The upper end of the sealing assembly (2) is connected to the valve cage (3) and the valve assembly (4). The valve cage (3) is located on the outer side of the lower end of the valve assembly (4). The packing assembly (5) is located on the outer side of the upper end of the valve assembly (4). The sealing heat dissipation assembly (6) is connected to the packing assembly (5). An air inlet and an air outlet are provided on the inner side of the valve body (1). The valve cage (3) comprises a valve cage bottom plate (31), a plurality of valve cage middle plates (32), a valve cage upper cover (33) and a valve cage pressure cover (34); the valve cage bottom plate (31) is mounted on the upper end of the sealing assembly (2); a plurality of valve cage middle plates (32) are stacked and fixedly mounted on the upper end of the valve cage bottom plate (31) in sequence; a valve cage upper cover (33) is fixedly mounted on the upper end of the uppermost valve cage middle plate (32); the inner side of the valve cage middle plate (32) is connected to the valve assembly (4); the outer side of the valve cage upper cover (33) is in contact with the inner wall of the valve body (1); the upper end of the valve cage upper cover (33) is fixedly connected to the valve cage pressure cover (34); the valve cage pressure cover (34) is fixedly connected to the valve body (1); and the upper end of the valve cage pressure cover (34) is connected to the packing assembly (5).

2. The high-pressure regulating valve with excellent heat dissipation performance according to claim 1, characterized in that: A plurality of concentric annular grooves are provided on the inner side of the cage middle plate (32), two adjacent annular grooves are connected via radial grooves, and the radial grooves of the outer ring and the inner ring are respectively connected to the air inlet and the air outlet.

3. The high-pressure regulating valve with excellent heat dissipation performance according to claim 2, characterized in that: The sealing assembly (2) comprises a valve seat self-sealing ring (21) and a valve seat (22); the valve seat (22) is abuttingly connected and arranged at the inner air outlet of the valve body (1); the valve seat self-sealing ring (21) is embedded in the connection between the lower end of the valve seat (22) and the valve body (1); the upper end of the valve seat (22) is fixedly connected to the valve cage bottom plate (31); and the inner side of the valve seat (22) is connected to the valve assembly (4).

4. The high-pressure regulating valve with excellent heat dissipation performance according to claim 3, characterized in that: The outer side of the lower end of the valve seat (22) is inclined, the outer diameter of the valve seat (22) gradually decreases from top to bottom, and the valve seat is inclined from the inner side of the sealing ring (21) to match the inclined surface of the valve seat (22).

5. The high-pressure regulating valve with excellent heat dissipation performance according to claim 4, characterized in that: The valve assembly (4) comprises a valve disc (41), a valve stem (42) and a nut (43); the lower end of the valve stem (42) passes through the upper end of the valve disc (41); the lower end of the valve stem (42) is provided with a thread for matching with the nut (43); the nut (43) is located at the top of the valve disc (41) and is threadedly connected to the valve stem (42) to fix the valve disc (41) and the valve stem (42); the lower end of the valve disc (41) is in contact with the valve seat self-sealing ring (21); the outer side of the valve disc (41) is in contact with the valve cage middle plate (32); and the upper end of the valve stem (42) is connected to the packing assembly (5) and the actuator assembly (7).

6. The high-pressure regulating valve with excellent heat dissipation performance according to claim 5, characterized in that: The packing assembly (5) comprises a packing box (51), a packing gasket (52), a packing (53), a packing pressure plate seat (54), a packing pressure sleeve (55), a packing pressure plate (56) and a plurality of first bolts (57). The lower end of the packing box (51) is disc-shaped, the upper end of the packing box (51) is cylindrical, the outer side of the lower end of the packing box (51) is in contact with the valve body (1), the lower end of the packing box (51) is in abutment with the valve cage pressure cover (34), the outer side of the packing box (51) is connected to the sealing heat dissipation assembly (6), the inner side of the packing box (51) is slidably connected to the valve stem (42), the packing gasket (52) and the packing (53) are in contact with the valve body (1), and the packing gasket (52) and the packing (53) are in contact with the valve body (1). From bottom to top, they are sequentially embedded between the inner side of the upper end of the stuffing box (51) and the valve stem (42); the outer side of the upper end of the stuffing box (51) is fixedly connected to the stuffing pressure plate seat (54); the stuffing pressure plate seat (54) is sleeved on the outer side of the valve stem (42); the upper end of the stuffing pressure plate seat (54) is in contact with the stuffing pressure plate (56); the lower end of the stuffing pressure plate seat (54) is in contact with the stuffing (53); the stuffing pressure plate seat (54) and the stuffing pressure plate (56) are fixedly connected by a plurality of first bolts (57); the lower end of the stuffing pressure plate seat (54) is connected to the sealing heat dissipation assembly (6); and the inner side of the stuffing pressure plate (56) is in contact with the valve stem (42).

7. The high pressure regulating valve with excellent heat dissipation performance according to claim 6, characterized in that: The sealing heat dissipation assembly (6) comprises a self-sealing ring (61), six open rings (62), a heat sink (63), a second bolt (64) and a cover plate (65). The self-sealing ring (61) is embedded between the lower end of the stuffing box (51) and the valve body (1). The upper end of the self-sealing ring (61) is in contact with the six open rings (62). The inner and outer sides of the six open rings (62) are respectively in contact with the side wall of the lower end of the stuffing box (51) and the inner side wall of the valve body (1). The upper end of the six open rings (62) is in contact with the cover plate (65). The cover plate (65) and the lower end of the stuffing box (51) are fixedly connected by a plurality of second bolts (64). The heat sink (63) is sleeved on the outer side of the upper end of the stuffing box (51). The upper end of the heat sink (63) is in contact with the stuffing plate seat (54).

8. The high-pressure regulating valve with excellent heat dissipation performance according to claim 7, characterized in that: The inner side of the lower end of the self-sealing ring (61) is inclined, and the inner diameter of the self-sealing ring (61) gradually decreases from bottom to top. An elastic strain groove is provided on the outer side of the middle section of the self-sealing ring (61). The outer side of the lower end of the stuffing box (51) is inclined to match the inclined surface of the self-sealing ring (61), and multiple groups of disc-shaped heat dissipation plates are provided on the outer side of the heat sink (63).

9. The high-pressure regulating valve with excellent heat dissipation performance according to claim 8, characterized in that: The actuator assembly (7) comprises a bracket (71) and an electric actuator (72); the bracket (71) is fixedly mounted on the upper end of the valve body (1); the electric actuator (72) is fixedly mounted on the upper end of the bracket (71); and the output end of the electric actuator (72) is fixedly connected to the valve stem (42) facing downward.

10. A method for using a high-pressure regulating valve with excellent heat dissipation performance, using the high-pressure regulating valve with excellent heat dissipation performance according to claim 9, characterized in that: The following steps are involved: Step 1: The fluid enters through the air inlet of the valve body (1) and contacts the valve cage middle plate (32) and is blocked by the valve disc (41) when passing through the valve cage middle plate (32); Step 2: Start the electric actuator (72), the electric actuator (72) drives the valve stem (42) to move upward, the valve stem (42) drives the valve flap (41) to move upward, the valve flap (41) no longer blocks the fluid, the fluid passes through the cage middle piece (32) into the inner side of the cage middle piece (32), and flows out through the air outlet of the valve body (1); Step 3: The fluid leaking between the valve disc (41) and the stuffing box (51) is driven to move upward when the valve disc (41) moves upward, and the fluid applies pressure to the stuffing box (51), and the stuffing box (51) applies pressure to the self-sealing ring (61). The inclined surface between the stuffing box (51) and the self-sealing ring (61) allows a part of the pressure to be dispersed outward, and the force toward the outside causes the self-sealing ring (61) to deform and fit more closely with the valve body (1) and the stuffing box (51); Step 4: The generated heat is conducted upward along the stuffing box (51), and when it is conducted to the heat sink (63), it is discharged through multiple heat sinks outside the heat sink (63). The stuffing box (51), stuffing gasket (52), stuffing (53), and stuffing sleeve (55) accelerate heat conduction and support the valve stem (42), and the stuffing plate seat (54) and the stuffing plate (56) are used for fixing.

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