A fireproof, antistatic and high-pressure resistant ball valve and its working method

Abstract

The present invention relates to a fireproof, antistatic and high-pressure resistant ball valve and a working method thereof applied in the field of ball valve technology, comprising a valve body, a valve core, a sealing base, a sealing sleeve, a valve stem, a core inner body, a heat exchange tube, a plug hole, a heat-conducting sleeve and a conductive column button. The present invention realizes heat transfer and heat dissipation of the fluid medium to the valve stem through heat conduction between the fluid medium flowing inside the ball valve and the core inner body, and then realizes heat transfer and heat dissipation of the fluid medium to the valve stem through the heat exchange tube, so as to prevent the external fire of the ball valve from affecting the sealing effect of the sealing sleeve inside the valve cover, thereby effectively improving the fireproof effect of the ball valve. At the same time, the heat-conducting sleeve fills the space between the heat exchange tube and the plug hole, and utilizes the elasticity of the heat-conducting sleeve to compress the two ends of the conductive column button to contact the inner wall of the plug hole and the outer wall of the heat exchange tube respectively, thereby forming an electrostatic conduction path, and realizing that the static electricity accumulated in the valve core is discharged through the valve stem, thereby effectively improving the anti-static ability of the ball valve and facilitating the long-term operation of the ball valve.

Description

Technical Field

[0001] The present invention relates to a ball valve and a working method thereof, and in particular to a fireproof, antistatic and high-pressure resistant ball valve and a working method thereof applied in the technical field of ball valves. Background Art

[0002] A ball valve is a valve that controls the flow of fluid by rotating the ball. The valve stem drives the ball to rotate in the valve body, thereby changing the shape of the channel in the valve body and achieving fluid flow control. The valve seat of a ball valve is usually made of elastic material to ensure that the valve has good sealing performance when it is closed. The core of the fireproof structure of the ball valve lies in the design of its sealing ring. The sealing ring is affected by the high temperature of the fire. At the same time, the soft valve seat of the ball valve is an electrical insulator. This means that they are not easy to conduct electricity. When the charge in the fluid accumulates on their surface and there is mutual friction between the ball and the valve seat, this friction will generate static electricity. If the static electricity is difficult to be discharged in time, the static electricity may cause the valve to get stuck or work abnormally. When the static electricity accumulates to a certain extent and encounters an ignition source such as a spark, it may cause serious consequences such as fire or explosion.

[0003] Chinese invention patent CN202110493543.1 discloses a metal hard-sealed ball valve for a top-mounted gas storage tank that can be maintained online. The second spring energy storage seal ring is set as a double seal structure to achieve two-way sealing; the first spring energy storage seal ring is set as a single seal structure to achieve one-way sealing, which is convenient for inspection and maintenance downstream. Through special design, the space required for disassembly and assembly of the valve seat is separated from the groove of the spring energy storage seal ring. Under the action of medium pressure, the reciprocating stroke of the seal ring is extremely small, so its sealing performance is more stable and reliable. A metal sealing ring is set on the contact surface between the cover body and the valve body, which can play a role in fire prevention and further sealing. The sealing performance is stable and reliable, fireproof, anti-static, and the total torque of the valve is small. The second spring energy storage seal ring and the first spring energy storage seal ring can play a two-way seal, which is convenient for inspection and maintenance downstream.

[0004] The existing ball valve lacks fireproof and high temperature protection for the sealing packing on the valve stem. Most of them are made of sealing packing with materials that can withstand high temperatures, or metal sealing rings are installed outside the sealing structure as in the above-mentioned patent. The fireproof and high temperature resistance effects are poor. In addition, the existing ball valve lacks an anti-static structure, which affects the long-term use of the ball valve. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the existing ball valve lacks fireproof and high-temperature protection for the sealing packing on the valve stem. Most of them are made of sealing packing only using materials that can withstand high temperatures, and the fireproof and high-temperature resistant effects are not good. In addition, the existing ball valve lacks an anti-static structure, which affects the long-term use of the ball valve.

[0006] In order to solve the above problems, the present invention provides a fireproof, antistatic and high-pressure resistant ball valve and a working method thereof, comprising a valve body, a valve core is rotatably connected to the middle of the valve body, both ends of the valve body are sleeved with sealing bases, the sealing bases correspond to the two ends of the valve core, a valve cover is fixedly connected to the top of the valve body, a sealing sleeve is fixedly sleeved inside the valve cover, a valve stem is rotatably connected to the middle of the sealing sleeve, and the bottom end of the valve stem is fixedly plugged with the valve core;

[0007] One end of the valve core is fixedly connected to the core inner body, and the inside of the core inner body is fixedly connected to the heat exchange tube. A plug hole is opened at the bottom of the valve stem, and the plug hole is plugged with the heat exchange tube. A heat-conducting ring is sleeved between the plug hole and the heat exchange tube. A conductive column button is fixedly inlaid on the outer surface of the heat-conducting ring, and the two ends of the conductive column button are respectively in contact with the inner wall of the plug hole and the outer wall of the heat exchange tube.

[0008] In the above-mentioned fireproof, anti-static and high-pressure resistant ball valve, the heat transfer and heat dissipation of the valve stem is carried out through the fluid medium flowing inside the ball valve, which effectively prevents the high temperature of the fire from affecting the sealing sleeve, thereby effectively improving the fireproof effect of the ball valve. At the same time, the conductive column button connects the plug hole and the heat exchange tube to form an electrostatic conduction path, thereby effectively improving the anti-static ability of the ball valve.

[0009] As a further improvement of the present application, the outer convex surface of the core inner body is arranged in a triangular shape, and an arc groove is provided at the other end inside the valve core corresponding to the outer convex end of the core inner body. The triangular core inner body facilitates the fluid medium to flush around the core inner body, and the arc groove increases the internal flow space of the valve core, effectively reducing the influence of the core inner body on the internal flow effect of the valve core.

[0010] As a further improvement of the present application, the heat exchange tube is made of copper tube, and the heat exchange tube made of copper tube effectively improves the heat transfer effect of the heat exchange tube. The conductive column button is arranged at an angle, and the conductive column button is made of spring steel material, and the thermal conductive ring is made of thermal conductive silicone material. The elasticity of the thermal conductive ring is used to squeeze the two ends of the conductive column button, so that the two ends of the conductive column button are respectively in close contact with the inner wall of the plug hole and the outer wall of the heat exchange tube, thereby effectively improving the stability of electrostatic conduction.

[0011] As another improvement of the present application, an outer core groove is opened on the outside of one end of the valve core close to the core inner body, and the outer port of the outer core groove is smaller than the inner circle of the sealing base. After the ball valve is closed, the fluid medium entering the ball valve impacts into the outer core groove, increasing the pressure area of ​​the valve core to disperse the pressure applied by the high-pressure fluid medium, thereby effectively improving the high-pressure resistance of the ball valve.

[0012] As another improvement supplement of the present application, the core outer groove is set in a conical shape corresponding to the core inner body, and the bottom of the heat exchange tube is exposed inside the core outer groove. By changing the fluid medium to apply force to the inner wall of the core outer groove, the force direction on the valve core is more dispersed, thereby effectively improving the high pressure resistance of the valve core.

[0013] As another improvement supplement of the present application, a heat conducting plate is fixedly connected to the inner wall of the core outer groove, and the inner end of the heat conducting plate is fixedly connected to the bottom of the heat exchange tube. The fluid medium enters the core outer groove and exchanges heat with the bottom of the heat exchange tube, which plays a role in transferring heat to the valve stem and effectively improving the fire prevention effect of the ball valve.

[0014] As another improvement of the present application, a liquid collection port is provided at the bottom of the valve body, and the inner end of the liquid collection port is flush with the bottom of the core outer groove. The fluid medium trapped in the core outer groove is taken out through the liquid collection port, which facilitates the sampling operation of the fluid medium inside the ball valve. At the same time, the fluid medium trapped in the core outer groove is discharged, effectively avoiding long-term retention of the fluid medium and affecting the use of the ball valve.

[0015] As another improvement supplement to the present application, a sealing plug is inserted into the outer end of the liquid intake port, and the sealing plug is threadedly connected to the valve body by a screw. The sealing plug is used to close the liquid intake port, thereby facilitating the opening and closing operations of the liquid intake port.

[0016] A working method of a fireproof, antistatic and high-pressure resistant ball valve:

[0017] Step 1: After the ball valve is installed on the pipeline, when the ball valve is in the connected state, the flowing fluid medium passes through the valve core, and the fluid medium washes the surface of the core body inside the valve core to achieve heat conduction between the fluid medium and the core body, and then the heat transfer and heat dissipation of the fluid medium to the valve stem is achieved through the heat exchange tube to prevent the external fire of the ball valve from affecting the sealing effect of the sealing sleeve inside the valve cover, thereby effectively improving the fire prevention effect of the ball valve;

[0018] Step 2: The heat-conducting sleeve improves the heat conduction effect between the plug hole and the heat exchange tube, and uses the elasticity of the heat-conducting sleeve to compress the two ends of the conductive column button to contact the inner wall of the plug hole and the outer wall of the heat exchange tube respectively, thereby forming an electrostatic conduction path, so that the static electricity accumulated in the valve core can be discharged through the valve stem, thereby effectively improving the anti-static ability of the ball valve;

[0019] Step 3: Rotate the valve stem to close the ball valve. The outer groove on the valve core rotates to the direction of the inlet end of the ball valve, so that the outer groove faces the flowing fluid medium. The high-pressure fluid medium applies force to the inner wall of the outer groove, thereby increasing the pressure area of ​​the valve core and changing the force direction of the valve core, effectively reducing the sealing difficulty of the sealing base, thereby effectively improving the high-pressure resistance of the ball valve;

[0020] Step 4: The fluid medium entering the outer groove of the core exchanges heat with the bottom of the heat exchange tube, which also plays a role in heat transfer and heat dissipation of the valve stem to prevent the ball valve from being in a closed state and to provide heat dissipation protection for the sealing sleeve, thereby further effectively improving the fire prevention effect of the ball valve.

[0021] In summary, the present invention realizes heat transfer and heat dissipation from the fluid medium flowing inside the ball valve to the valve stem through heat exchange tube, so as to prevent the fire outside the ball valve from affecting the sealing effect of the sealing sleeve inside the valve cover, thereby effectively improving the fire prevention effect of the ball valve, and at the same time, the elasticity of the heat-conducting ring is used to compress the two ends of the conductive column button to contact the inner wall of the plug-in hole and the outer wall of the heat exchange tube respectively, thereby forming an electrostatic conduction path, and realizing the discharge of static electricity accumulated in the valve core through the valve stem, thereby effectively improving the anti-static ability of the ball valve and facilitating the long-term operation of the ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural diagram of a first embodiment of the present invention;

[0023] Figure 2 It is a cross-sectional three-dimensional structural diagram of a first embodiment of the present invention;

[0024] Figure 3 This is a three-dimensional structural diagram of a valve core and a valve stem according to a first embodiment of the present invention;

[0025] Figure 4 It is a top-view cross-sectional three-dimensional structural diagram of a first embodiment of the present invention;

[0026] Figure 5 A cross-sectional view of a first embodiment of the present invention;

[0027] Figure 6 This is a demonstration diagram of the fluid medium passing through the ball valve according to the first embodiment of the present invention;

[0028] Figure 7 A cross-sectional view of a heat-conducting sleeve according to a first embodiment of the present invention;

[0029] Figure 8 This is a three-dimensional structural diagram of a heat-conducting sleeve according to a first embodiment of the present invention;

[0030] Fig. 9 It is a side cross-sectional three-dimensional structural diagram of a second embodiment of the present invention;

[0031] Fig.10 This is a demonstration diagram of the valve core rotating closed state according to the second embodiment of the present invention.

[0032] Description of the numbers in the figure:

[0033] 1. Valve body; 101. Valve core; 102. Sealing base; 103. Valve cover; 104. Sealing sleeve; 105. Valve stem; 2. Core inner body; 201. Heat exchange tube; 202. Plug hole; 203. Heat conductive sleeve; 204. Conductive column button; 205. Arc groove; 3. Core outer groove; 301. Heat conductive sheet; 302. Liquid extraction port; 303. Sealing plug. DETAILED DESCRIPTION

[0034] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0035] The first implementation method:

[0036] Figure 1 to Figure 2 It is shown that a fireproof, antistatic and high-pressure resistant ball valve and its working method include a valve body 1, a valve core 101 is rotatably connected to the middle of the valve body 1, both ends of the valve body 1 are sleeved with sealing bases 102, the sealing bases 102 correspond to the two ends of the valve core 101, a valve cover 103 is fixedly connected to the top of the valve body 1, a sealing sleeve 104 is fixedly sleeved inside the valve cover 103, a valve stem 105 is rotatably connected to the middle of the sealing sleeve 104, and the bottom end of the valve stem 105 is fixedly plugged with the valve core 101;

[0037] The valve core 101 rotates in the valve body 1. When the internal cavity of the valve core 101 is connected to the two ends of the valve body 1, the ball valve is opened. Otherwise, when the valve core 101 rotates ninety degrees, the valve core 101 cuts off the connection between the two ends of the valve body 1 to close the ball valve. The sealing base 102 is in close contact with the valve core 101 to achieve the seal between the valve core 101 and the valve body 1. The sealing sleeve 104 achieves the seal between the valve stem 105 and the valve cover 103.

[0038] Figures 2 to 6 As shown, one end of the valve core 101 is fixedly connected with the core inner body 2, and the core inner body 2 is fixedly connected with the heat exchange tube 201. The bottom of the valve stem 105 is provided with a plug hole 202, and the plug hole 202 is plugged with the heat exchange tube 201. A heat-conducting sleeve 203 is sleeved between the plug hole 202 and the heat exchange tube 201. The outer convex surface of the core inner body 2 is triangularly arranged, and the other end of the valve core 101 is provided with an arc groove 205 corresponding to the outer convex end of the core inner body 2. The triangular core inner body 2 is convenient for the fluid medium to flush around the core inner body 2. The arc groove 205 increases the internal circulation space of the valve core 101, effectively reducing the influence of the core inner body 2 on the internal circulation effect of the valve core 101. The heat exchange tube 201 is made of copper tube, and the copper heat exchange tube 201 effectively improves;

[0039] After the ball valve is installed on the pipeline, when the ball valve is in a connected state, the flowing fluid medium passes through the valve core 101. The specific process of the fluid medium passing through the valve core 101 is as follows: Figure 6As shown, the arrows indicate the flow path of the fluid medium. The fluid medium flushes the surface of the core body 2 inside the valve core 101 to achieve heat conduction between the fluid medium and the core body 2. The heat-conducting ring 203 improves the heat transfer effect between the plug hole 202 and the heat exchange tube 201. Then, the heat transfer and heat dissipation of the fluid medium to the valve stem 105 is achieved through the heat exchange tube 201. The copper heat exchange tube 201 effectively improves the heat transfer effect. When a fire occurs outside the ball valve, the high temperature generated by the fire affects the sealing sleeve 104 inside the valve cover 103, and the sealing effect of the sealing sleeve 104 is damaged. By protecting the sealing effect of the sealing sleeve 104, the fire prevention effect of the ball valve is effectively improved.

[0040] Figures 5 to 8 As shown, the outer surface of the heat-conducting sleeve 203 is fixedly inlaid with a conductive post button 204, and the two ends of the conductive post button 204 are respectively in contact with the inner wall of the plug hole 202 and the outer wall of the heat exchange tube 201. The conductive post button 204 is inclined, and the conductive post button 204 is made of spring steel material, and the heat-conducting sleeve 203 is made of heat-conducting silicone material. The elasticity of the heat-conducting sleeve 203 is used to squeeze the two ends of the conductive post button 204, so that the two ends of the conductive post button 204 are respectively in close contact with the inner wall of the plug hole 202 and the outer wall of the heat exchange tube 201, thereby effectively improving the stability of electrostatic conduction;

[0041] The heat-conducting collar 203 is filled between the plug hole 202 and the heat exchange tube 201, and the elasticity of the heat-conducting collar 203 is used to compress the conductive post button 204 to be more inclined, so that the two ends of the conductive post button 204 contact the inner wall of the plug hole 202 and the outer wall of the heat exchange tube 201 respectively, and an electrostatic conduction path is formed between the plug hole 202 and the heat exchange tube 201, so that the static electricity accumulated in the valve core 101 can be discharged through the valve stem 105, thereby effectively improving the anti-static ability of the ball valve.

[0042] The second implementation method:

[0043] Compared with the first embodiment, this embodiment mainly adds a core outer groove 3. The specific newly added structure is as follows, and the remaining structures are consistent with the first embodiment.

[0044] Figures 9 and 10As shown, an outer core groove 3 is provided on the outside of one end of the valve core 101 close to the core inner body 2, and the outer port of the outer core groove 3 is smaller than the inner circle of the sealing base 102. After the ball valve is closed, the fluid medium entering the ball valve impacts and enters the outer core groove 3, increasing the pressure area of ​​the valve core 101 to disperse the pressure of the high-pressure fluid medium, effectively improving the high-pressure resistance of the ball valve. The outer core groove 3 is set in a cone shape corresponding to the core inner body 2, and the bottom of the heat exchange tube 201 is exposed inside the outer core groove 3. By changing the force applied by the fluid medium to the inner wall of the outer core groove 3, the force direction applied to the valve core 101 is more dispersed, thereby effectively improving the high-pressure resistance of the valve core 101. The inner wall of the outer core groove 3 is fixedly connected with a heat conductive sheet 301, and the inner end of the heat conductive sheet 301 is fixedly connected to the bottom of the heat exchange tube 201. The fluid medium enters the outer core groove 3 and performs heat exchange and transfer with the bottom of the heat exchange tube 201, which plays a role in heat transfer and heat dissipation of the valve stem 105, effectively improving the fire prevention effect of the ball valve.

[0045] When the ball valve on the pipeline needs to be closed, the valve stem 105 is rotated to close the ball valve, and the core outer groove 3 on the valve core 101 is rotated to the inlet end direction of the ball valve, so that the core outer groove 3 faces the flushing direction of the fluid medium. The specific process of the fluid medium entering the core outer groove 3 is as follows: Fig.10 As shown, the large arrow represents the flow direction of the fluid medium, and the small arrow represents the pressure of the fluid medium on the core outer groove 3. The high-pressure fluid medium applies force to the inner wall of the core outer groove 3. The core outer groove 3 is tapered to increase the pressure area of ​​the valve core 101, and the inner wall of the core outer groove 3 is used to change the force direction of the valve core 101 to disperse the high pressure of the fluid medium. Compared with the existing spherical valve core 101, the fluid medium directly impacts the sealing base 102 along the spherical surface of the valve core 101. The core outer groove 3 in the technical solution effectively reduces the sealing difficulty of the sealing base 102, thereby effectively improving the high-pressure resistance of the ball valve. When the ball valve is in a closed state, the fluid medium entering the core outer groove 3 exchanges heat with the bottom of the heat exchange tube 201, which also plays a role in heat transfer and heat dissipation of the valve stem 105 to prevent the ball valve from being in a closed state, and to provide heat dissipation protection for the sealing sleeve 104, thereby further effectively improving the fire prevention effect of the ball valve.

[0046] Figure 1 and Fig. 9 As shown, a liquid taking port 302 is provided at the bottom of the valve body 1, and the inner end of the liquid taking port 302 is flush with the lower part of the core outer groove 3. The fluid medium trapped in the core outer groove 3 is taken out through the liquid taking port 302, which is convenient for the sampling operation of the fluid medium inside the ball valve, and at the same time, the fluid medium trapped in the core outer groove 3 is discharged, which effectively avoids the long-term retention of the fluid medium and affects the use of the ball valve. The outer end of the liquid taking port 302 is plugged with a sealing plug 303, and the sealing plug 303 is connected to the valve body 1 by a screw thread. The sealing plug 303 is used to close the liquid taking port 302, which is convenient for the opening and closing operation of the liquid taking port 302.

[0047] When the ball valve on the pipeline needs to be opened, the ball valve is switched from a closed state to an open state, and the valve core 101 rotates ninety degrees, and part of the fluid medium is retained in the core outer groove 3. The fluid medium retained in the core outer groove 3 is taken out through the liquid taking port 302, which is convenient for the sampling operation of the fluid medium inside the ball valve and the staff to implement the sampling management operation of the fluid medium, or before the ball valve is in an open state for a long time, the fluid medium retained in the core outer groove 3 is discharged through the liquid taking port 302, which effectively avoids the fluid medium in the core outer groove 3 from remaining for a long time and avoids affecting the use of the ball valve.

[0048] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A fireproof, antistatic and high pressure resistant ball valve, characterized by: The valve body (1) comprises a valve core (101) rotatably connected to the middle of the valve body (1), sealing bases (102) are sleeved on both ends of the valve body (1), the sealing bases (102) correspond to the two ends of the valve core (101), a valve cover (103) is fixedly connected to the top of the valve body (1), a sealing sleeve (104) is fixedly sleeved inside the valve cover (103), a valve stem (105) is rotatably connected to the middle of the sealing sleeve (104), and the bottom end of the valve stem (105) is fixedly plugged with the valve core (101); One end of the valve core (101) is fixedly connected to the core inner body (2), and the interior of the core inner body (2) is fixedly connected to the heat exchange tube (201). A plug hole (202) is provided at the bottom of the valve stem (105), and the plug hole (202) is plugged into the heat exchange tube (201). A heat conductive sleeve (203) is sleeved between the plug hole (202) and the heat exchange tube (201). A conductive column button (204) is fixedly embedded on the outer surface of the heat conductive sleeve (203), and two ends of the conductive column button (204) are respectively in contact with the inner wall of the plug hole (202) and the outer wall of the heat exchange tube (201); An outer core groove (3) is provided on the outside of one end of the valve core (101) close to the inner core body (2); the outer port of the outer core groove (3) is smaller than the inner circle of the sealing base (102); the outer core groove (3) is arranged in a conical shape corresponding to the inner core body (2); the inside of the outer core groove (3) exposes the bottom of the heat exchange tube (201); a heat conducting plate (301) is fixedly connected to the inner wall of the outer core groove (3); and the inner end of the heat conducting plate (301) is fixedly connected to the bottom of the outlet heat exchange tube (201).

2. The fireproof, antistatic and high pressure resistant ball valve according to claim 1 is characterized by: The outer convex surface of the core inner body (2) is arranged in a triangular shape, and the other end inside the valve core (101) is provided with an arc groove (205) corresponding to the outer convex end of the core inner body (2).

3. The fireproof, antistatic and high pressure resistant ball valve according to claim 1 is characterized by: The heat exchange tube (201) is made of a copper tube, the conductive column button (204) is arranged in an inclined manner, and the conductive column button (204) is made of a spring steel material, and the heat conductive sleeve (203) is made of a heat conductive silicone material.

4. The fireproof, antistatic and high pressure resistant ball valve according to claim 1 is characterized by: The bottom of the valve body (1) is provided with a liquid intake port (302), and the inner end of the liquid intake port (302) is flush with the bottom of the core outer groove (3).

5. The fireproof, antistatic and high pressure resistant ball valve according to claim 4 is characterized by: A sealing plug (303) is inserted into the outer end of the liquid intake port (302), and the sealing plug (303) is threadedly connected to the valve body (1) via a screw.

6. A method for operating a fireproof, antistatic, and high-pressure resistant ball valve, using the fireproof, antistatic, and high-pressure resistant ball valve according to claim 1, characterized in that: The specific working method is as follows: Step 1: After the ball valve is installed on the pipeline, when the ball valve is in a connected state, the flowing fluid medium passes through the valve core (101), and the fluid medium washes the surface of the core inner body (2) inside the valve core (101), thereby achieving heat conduction between the fluid medium and the core inner body (2), and then the heat transfer and heat dissipation of the fluid medium to the valve stem (105) is achieved through the heat exchange tube (201), so as to prevent the external fire of the ball valve from affecting the sealing effect of the internal sealing sleeve (104) of the valve cover (103), thereby effectively improving the fire prevention effect of the ball valve; Step 2: The heat-conducting collar (203) improves the heat-conducting effect between the plug hole (202) and the heat exchange tube (201), and utilizes the elasticity of the heat-conducting collar (203) to compress the two ends of the conductive column button (204) to contact the inner wall of the plug hole (202) and the outer wall of the heat exchange tube (201), thereby forming an electrostatic conduction path, and realizing that the static electricity accumulated in the valve core (101) is discharged through the valve stem (105), thereby effectively improving the anti-static ability of the ball valve; Step 3: Rotate the operating valve stem (105), and when the ball valve is closed, the core outer groove (3) on the valve core (101) is rotated to the direction of the inlet end of the ball valve, so that the core outer groove (3) faces the flowing fluid medium, and the high-pressure fluid medium applies force to the inner wall of the core outer groove (3), thereby increasing the pressure area of ​​the valve core (101) and changing the force direction of the valve core (101), effectively reducing the sealing difficulty of the sealing base (102), thereby effectively improving the high-pressure resistance of the ball valve; Step 4: The fluid medium entering the core outer groove (3) exchanges heat with the bottom of the heat exchange tube (201), which also serves to transfer heat to the valve stem (105) to prevent the ball valve from being in a closed state and to provide heat dissipation protection for the sealing sleeve (104), thereby further effectively improving the fire protection effect of the ball valve.

Images