Ultra-high temperature quick valve

Abstract

An ultra-high temperature quick valve comprises a total valve valve body, a total valve valve cavity is formed in the total valve valve body, a total valve medium pipe group and a flow channel double-layer heat preservation structure are arranged in the total valve valve cavity, the total valve valve body comprises a high-temperature stop valve and an air quick valve, the high-temperature stop valve and the air quick valve are connected and fixed, the total valve valve cavity comprises an air inlet flow channel formed in the high-temperature stop valve and an air outlet flow channel formed in the air quick valve, the air inlet flow channel is communicated with the air outlet flow channel, the total valve medium pipe group comprises an air inlet lining pipe and an air outlet lining pipe, the air inlet lining pipe is arranged in the air inlet flow channel, the air outlet lining pipe is arranged in the air outlet flow channel, one end of the air inlet lining pipe is communicated with the air outlet lining pipe, the flow channel double-layer heat preservation structure is wrapped on the outer surfaces of the air inlet lining pipe and the air outlet lining pipe to preserve the interiors of the air inlet lining pipe and the air outlet lining pipe, the double-layer heat preservation structure arranged in the total valve valve cavity can avoid plastic deformation of the valve body caused by excessively high temperature of the valve body to cause sealing failure of the valve, and can also prevent heat energy from leaking to achieve the effect of energy saving.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-temperature and high-pressure valves, and particularly relates to a super-high-temperature quick valve. BACKGROUND

[0002] From the structure of the valve and in the process of valve operation, it is realized that under the super-high-temperature working condition, the inner lining heat insulation structure is adopted, which has a good effect of preventing the heat energy from being transferred to the valve body. In this way, the plastic deformation of the valve body caused by the excessively high temperature can be avoided, and the heat energy can be prevented from being discharged to achieve the energy-saving effect.

[0003] When the valve is used for high-temperature and low-pressure purposes, there will be no problem in using this structure. The inlet gas lining pipe and the outlet gas lining pipe are arranged in the passage and the valve chamber of the valve, the lining pipe and the valve body are filled with heat insulation cotton, a certain number of micro-holes are drilled on the lining pipe to balance the pressure inside and outside the lining pipe, and the valve can work very well when it is subjected to low pressure. After the working pressure is increased, it is found that it is difficult to make the heat insulation cotton in the valve chamber not be blown out by the high-pressure gas. Especially when the working temperature reaches 1200 DEG C and the working pressure is 46 MPa, this problem is particularly determined.

[0004] The data obtained by the super-high-speed wind tunnel test and its accuracy. Therefore, the hot air medium must be very clean, and the heat preservation performance (heat loss) of the valve, the structure of the valve, the sealing performance of the valve and the speed of quick closing are all very high. If the structure of the valve is not reasonably designed and the heat insulation measure is not appropriate, it will directly affect the accurate data of the test. SUMMARY

[0005] Therefore, the present application provides a super-high-temperature quick valve.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0007] A super-high-temperature quick valve, comprising a total valve body, a total valve chamber is formed in the total valve body, a total valve medium pipe group and a flow channel double-layer heat preservation structure are arranged in the total valve chamber, the total valve body comprises a high-temperature stop valve and an air quick valve, the high-temperature stop valve and the air quick valve are connected, the total valve chamber comprises an inlet gas valve chamber formed in the high-temperature stop valve and an outlet gas valve chamber formed in the air quick valve, the inlet gas valve chamber is communicated with the outlet gas valve chamber, the total valve medium pipe group comprises an inlet gas lining pipe and an outlet gas lining pipe, an inlet gas flow channel is formed in the inlet gas lining pipe, an outlet gas flow channel is formed in the outlet gas lining pipe, the inlet gas flow channel and the outlet gas flow channel are communicated, the inlet gas lining pipe is arranged in the inlet gas valve chamber, the outlet gas lining pipe is arranged in the outlet gas valve chamber, and the flow channel double-layer heat preservation structure is wrapped on the outer surfaces of at least part of the inlet gas lining pipe and the outlet gas lining pipe to heat preserve the interiors of the inlet gas lining pipe and the outlet gas lining pipe.

[0008] Preferably, the double-layer heat preservation structure of the flow channel comprises a flow channel sleeve, the flow channel sleeve is arranged outside the air inlet liner and the air outlet liner, a first heat preservation cavity is formed between the flow channel sleeve and the air inlet liner and the air outlet liner, a second heat preservation cavity is formed between the flow channel sleeve and the inner wall of the valve cavity of the total valve, and heat preservation materials are arranged in the first heat preservation cavity and the second heat preservation cavity.

[0009] Preferably, a blowout prevention connecting structure is arranged between the air outlet liner and the air inlet liner, the blowout prevention connecting structure is in a tubular shape, the inner wall of the blowout prevention connecting structure is in a stepped structure, the part of the blowout prevention connecting structure corresponding to the air outlet liner is in sealing connection with the air outlet liner, the part of the blowout prevention connecting structure corresponding to the air inlet liner forms a blowout prevention gap in the radial direction between the air inlet liner, and the blowout prevention gap is in communication with the first heat preservation cavity.

[0010] Preferably, the blowout prevention connecting structure is also arranged on the air inlet liner and the air outlet liner, the blowout prevention connecting structure divides the air inlet liner and the air outlet liner into a multi-segment structure, one end of the blowout prevention connecting structure is welded and fixed with the corresponding air outlet liner, the other end of the blowout prevention connecting structure is connected with the air outlet liner adjacent to the air outlet liner, and a blowout prevention gap is formed between the other end of the blowout prevention connecting structure and the air outlet liner adjacent to the air outlet liner, and the blowout prevention connecting structure on the air inlet liner is the same as the blowout prevention connecting structure on the air outlet liner.

[0011] Preferably, a transition connecting structure is arranged on the flow channel sleeve, the transition connecting structure comprises a first transition connecting structure and a second transition connecting structure, the first transition connecting structure extends obliquely from the end of the air inlet liner close to the air outlet liner to the cavity wall of the valve cavity of the total valve, the second transition connecting structure extends obliquely from the end of the air outlet liner close to the air inlet liner to the cavity wall of the valve cavity of the total valve, and the first transition connecting structure and the second transition connecting structure are connected with the cavity wall of the valve cavity of the total valve.

[0012] Preferably, a heat exchange device is further arranged on the total valve valve body, the heat exchange device is arranged on the side of the total valve valve body close to the air quick valve, the heat exchange device comprises a heat exchange connecting pipe, an air inlet proportional adjusting valve and an air outlet proportional adjusting valve, a connecting hole is formed in the air quick valve, the two ends of the connecting hole are in communication with the valve cavity of the total valve and the outside of the total valve valve body, and one end of the heat exchange connecting pipe extends into the connecting hole and is in communication with the valve cavity of the total valve.

[0013] Preferably, the heat exchange connecting pipe is in a three-layer structure, the heat exchange connecting pipe comprises a heat exchange pipe, a heat exchange first sleeve and a heat exchange second sleeve, the heat exchange first sleeve is arranged on the outer surface of the heat exchange pipe, the heat exchange second sleeve is arranged on the outer surface of the heat exchange first sleeve, a heat exchange cavity is formed between the heat exchange first sleeve and the heat exchange pipe, and a plurality of communication openings are arranged on the end of the heat exchange pipe close to the total valve valve body, the heat exchange pipe is in communication with the heat exchange cavity through the communication openings.

[0014] Preferably, the wall of the first heat exchange sleeve extends away from the center of the first heat exchange sleeve to form a regulating pipe. The regulating pipe is installed through the wall of the second heat exchange sleeve. The air inlet proportional regulating valve is installed at the end of the regulating pipe away from the first heat exchange sleeve, and the air inlet proportional regulating valve is connected to the heat exchange chamber in the first heat exchange sleeve through the regulating pipe. The air outlet proportional regulating valve is installed at the end of the heat exchange connecting pipe away from the main valve body.

[0015] Preferably, the main valve body is further provided with a water-cooled jacket, which is disposed on the outer surface of the main valve body. A water-cooled cavity is formed between the water-cooled jacket and the outer surface of the main valve body. The water-cooled cavity has a cooling water inlet and a cooling water outlet. The cooling water inlet is disposed at the end of the water-cooled jacket near the air intake channel, and the cooling water outlet is disposed at the end of the water-cooled jacket near the air outlet channel.

[0016] The beneficial effects of this invention are as follows: By connecting the high-temperature shut-off valve and the air quick valve to form a double valve structure, and connecting the flow channels of the two to form the main valve cavity, the installation space is reduced, and the installation and production costs are reduced. Furthermore, the double-layer insulation structure set in the main valve cavity can prevent the valve body from undergoing plastic deformation due to excessive temperature, which would lead to valve sealing failure. At the same time, it can also prevent heat leakage, thus achieving energy saving. While the double-layer insulation structure provides insulation, it will not blow the insulation cotton out of the insulation cavity when subjected to extremely high temperatures and pressures, and ensures the normal and safe operation of the valve. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Appendix Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Appendix Figure 2 For the appendix Figure 1 Enlarged view of point A in the image;

[0020] Appendix Figure 3 For the appendix Figure 1 Enlarged view of point B in the image;

[0021] Appendix Figure 4 For the appendix Figure 1 Enlarged view of point C in the image;

[0022] Appendix Figure 5Enlarged view of D in Figure 1

[0023] Reference signs:

[0024] 1, total valve body, 2, total valve cavity, 3, total valve medium pipe group, 4, flow channel double-layer insulation structure, 5, high temperature stop valve, 6, air quick valve, 7, air inlet flow channel, 8, air inlet bushing, 9, air outlet bushing, 10, driving device, 11, valve rod, 12, valve cover, 13, valve core, 14, valve seat, 15, valve core channel, 16, transition connection structure, 17, flow channel sleeve, 18, first insulation cavity, 19, second insulation cavity, 20, insulation cotton, 21, anti-blowing connection structure, 22, anti-blowing gap, 23, heat exchange device, 24, heat exchange connecting pipe, 25, air inlet proportional control valve, 26, air outlet proportional control valve, 27, connecting hole, 28, heat exchange through pipe, 29, heat exchange first sleeve, 30, heat exchange second sleeve, 31, heat exchange cavity, 32, communication port, 33, cooling cavity, 34, air outlet flow channel, 35, upper through pipe, 36, lower through pipe, 37, thin diameter part, 38, thick diameter part, 39, adjusting pipe, 40, first transition connection structure, 41, cooling water inlet, 42, second transition connection structure. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0026] The present application will be further described below with reference to the drawings in the description.

[0027] The present application provides the following technical solutions:

[0028] As shown in the accompanying Figures 1 to 5 ​The application discloses an ultrahigh-temperature quick valve, which comprises a total valve valve body 1, a total valve valve cavity 2 is formed in the total valve valve body 1, a total valve medium pipe group 3 and a flow channel double-layer heat preservation structure 4 are arranged in the total valve valve cavity 2, the total valve valve body 1 comprises a high-temperature stop valve 5 and an air quick valve 6, the high-temperature stop valve 5 and the air quick valve 6 are connected and fixed, the total valve valve cavity 2 comprises an air inlet flow channel 7 formed in the high-temperature stop valve 5 and an air outlet flow channel 34 formed in the air quick valve 6, the air inlet flow channel 7 is communicated with the air outlet flow channel 34, the total valve medium pipe group 3 comprises an air inlet lining pipe 8 and an air outlet lining pipe 9, the air inlet lining pipe 8 is arranged in the air inlet flow channel 7, the air outlet lining pipe 9 is arranged in the air outlet flow channel 34, one end of the air inlet lining pipe 8 is communicated with the air outlet lining pipe 9, and the flow channel double-layer heat preservation structure 4 is wrapped on the outer surfaces of the air inlet lining pipe 8 and the air outlet lining pipe 9 to preserve the interiors of the air inlet lining pipe 8 and the air outlet lining pipe 9. Specifically, the high-temperature stop valve 5 and the air quick valve 6 are connected to form a double-connection valve structure, the flow channels of the two valves are communicated to form the total valve valve cavity 2, the length of the flow channel in the valve body is greatly reduced, the installation space is reduced, the production cost is reduced, the temperature attenuation in the experiment process is reduced, the number of connection flanges is reduced, and the number of risk points of leakage is reduced; the double-layer heat preservation structure arranged in the total valve valve cavity 2 can avoid plastic deformation of the valve body caused by excessively high temperature, prevent the valve from being sealed invalidly, prevent heat energy from leaking to save energy, the flow channel double-layer heat preservation structure 4 can not blow away the heat preservation material 20 from the heat preservation cavity when the flow channel double-layer heat preservation structure 4 is subjected to extremely high temperature and pressure, and the valve can normally and safely work.

[0029] Specifically, corresponding valve opening and closing structures are arranged on the high-temperature stop valve 5 and the air quick valve 6, the valve opening and closing structures arranged on the high-temperature stop valve 5 and the air quick valve 6 are of the same structure, the valve opening and closing structure comprises a driving device 10, a valve rod 11, a valve cover 12 and a valve core 13, the high-temperature stop valve 5 and the air quick valve 6 are internally provided with valve core channels 15 communicated with the air inlet flow channel 7 and the air outlet flow channel 34, the valve core 13 is arranged in the valve core channel 15, one end of the valve rod 11 is connected with the valve core 13, the other end of the valve rod 11 is connected with the driving device 10, the valve core 13 is driven to move up and down in the valve core channel 15, the valve cover 12 is sleeved on the valve rod 11 and arranged above the valve core 13 to seal the valve core channel 15 above the valve core 13, a valve seat 14 is further arranged in the valve core channel 15 and located at the bottom end of the valve core channel 15, the valve core 13 is driven by the valve rod 11 to seal the air inlet flow channel 7 or the air outlet flow channel 34, when the valve core 13 falls to be in close contact with the valve seat 14, the air inlet flow channel 7 and the air outlet flow channel 34 are sealed, when the valve core 13 rises, the air inlet flow channel 7 and the air outlet flow channel 34 are opened, and the total valve valve cavity 2 is in a smooth state.

[0030] Further, the flow channel double-layer heat preservation structure 4 comprises a flow channel sleeve 17 arranged outside the air inlet liner 8 and the air outlet liner 9, a first heat preservation cavity 18 is formed between the flow channel sleeve 17 and the flow channel liner, a second heat preservation cavity 19 is formed between the flow channel sleeve 17 and the inner wall of the total valve cavity 2, and heat preservation material 20 is arranged in the first heat preservation cavity 18 and the second heat preservation cavity 19. Specifically, in the design, the heat preservation material 20 can be heat preservation cotton or ceramic fiber rope.

[0031] Further, the air outlet liner 9 and the air inlet liner 8 are provided with a blowout prevention connection structure 21, the blowout prevention connection structure 21 is in a tubular shape, the inner wall of the blowout prevention connection structure 21 is in a stepped structure, the part of the blowout prevention connection structure 21 corresponding to the air outlet liner 9 is in sealed connection with the air outlet liner 9, the part of the blowout prevention connection structure 21 corresponding to the air inlet liner 8 forms a blowout prevention gap 22 in the radial direction between the air inlet liner 8, and the blowout prevention gap 22 is in communication with the first heat preservation cavity 18. The blowout prevention connection structure 21 is also arranged on the air inlet liner 8 and the air outlet liner 9, the blowout prevention connection structure 21 divides the air inlet liner 8 and the air outlet liner 9 into a multi-segment structure, one end of the blowout prevention connection structure 21 is welded and fixed with the corresponding air outlet liner 9, the other end of the blowout prevention connection structure 21 is connected with the air outlet liner 9 adjacent to the one end of the air outlet liner 9, and the blowout prevention gap 22 is formed between the blowout prevention connection structure 21 and the air outlet liner 9 adjacent to the one end of the air outlet liner 9. The blowout prevention connection structure on the air inlet liner 8 is the same as the blowout prevention connection structure 21 on the air outlet liner 9. Specifically, by arranging the blowout prevention gap 22, a deformable space can be provided for the air inlet liner 8 and the air outlet liner 9 in a long-time super-high-temperature environment, so as to prevent the air inlet liner 8 and the air outlet liner 9 from being extruded and deformed in close contact; and the blowout prevention gap 22 can also limit the heat preservation material 20 in the first heat preservation cavity 18, since the blowout prevention gap 22 is in communication with the first heat preservation cavity 18 to form a turning structure, so that the heat preservation material 20 cannot be blown out towards the air outlet liner 9 due to excessive air pressure.

[0032] Further, the transition connection structure 16 is arranged on the flow channel sleeve 17, the transition connection structure 16 comprises a first transition connection structure 40 and a second transition connection structure 45, the first transition connection structure 40 is inclinedly extended from the one end of the inlet gas liner 8 close to the outlet gas liner 9 to the cavity wall of the total valve valve cavity 2, the second transition connection structure 45 is inclinedly extended from the one end of the outlet gas liner 9 close to the inlet gas liner 8 to the cavity wall of the total valve valve cavity 2, and the first transition connection structure 40 and the second transition connection structure 45 are connected with the cavity wall of the total valve valve cavity 2. Specifically, the expansion amount and the expansion stress of the high-temperature metal flow channel in the diameter direction can be released, the transition connection structure 16 prolongs the heat transfer distance, that is, the first transition connection structure 40 and the second transition connection structure 45 are inclinedly extended to the central cavity wall of the total valve valve cavity 2, so that the temperature loss and the valve body temperature are greatly reduced.

[0033] Further, in the process of preheating the pipeline and the valve by the high-temperature gas, high-temperature and high-pressure gas is discharged. In order to solve the influence of the discharged high-temperature air on the valve body and the exhaust pipeline, the heat exchange device 23 is arranged on the total valve valve body 1, the heat exchange device 23 mixes and cools the gas, and then the gas is discharged after being cooled to near normal temperature by water cooling. The heat exchange device 23 is arranged on the side of the total valve valve body 1 close to the air quick valve 6, the heat exchange device 23 comprises a heat exchange connecting pipe 24, an air inlet proportional adjusting valve 25 and an air outlet proportional adjusting valve 26, the air quick valve 6 is provided with a connecting hole 27, the two ends of the connecting hole 27 are communicated with the inside of the total valve medium pipe group 3 and the outside of the total valve valve body 1, and one end of the heat exchange connecting pipe 24 extends into the connecting hole 27 and is communicated with the inside of the total valve medium pipe group 3. Specifically, by arranging the heat exchange device 23 on the side of the total valve valve body 1 close to the air quick valve 6, the high-temperature air in the total valve medium pipe group 3 can be heat exchanged. In the design, the inlet gas liner 8 and the outlet gas liner 9 are always filled with high-temperature air. When the super-high-temperature quick valve is not working, the external cooling gas enters the heat exchange cavity 31 through the air inlet proportional adjusting valve 25, then enters the heat exchange through pipe 28 through the communication port 32 of the heat exchange cavity 31, so as to be heat exchanged with the super-high-temperature air in the total valve medium pipe group 3 through the heat exchange through pipe 28, and then the super-high-temperature air is discharged to the outside of the total valve valve body 1 through the air outlet proportional adjusting valve 26 after being taken out through the heat exchange through pipe 28, so as to realize heat exchange.

[0034] Further, the heat exchange connecting pipe 24 is provided in a three-layer structure, and the heat exchange connecting pipe 24 comprises a heat exchange through pipe 28, a heat exchange first sleeve pipe 29 and a heat exchange second sleeve pipe 30. The heat exchange first sleeve pipe 29 is arranged on the outer surface of the heat exchange through pipe 28, and the heat exchange second sleeve pipe 30 is arranged on the outer surface of the heat exchange first sleeve pipe 29. The heat exchange first sleeve pipe 29 and the heat exchange through pipe 28 form a heat exchange cavity 31. The heat exchange through pipe 28 is provided with a plurality of communication openings 32 on one end close to the total valve valve body 1, and the heat exchange through pipe 28 is in communication with the heat exchange cavity 31 through the communication openings 32. Specifically, the heat exchange second sleeve pipe 30 and the heat exchange first sleeve pipe 29 form a cooling cavity 33, which is in communication with a water cooling cavity (not shown in the figure). The cooling water inlet 41 can also be arranged on the heat exchange second sleeve pipe 30, so that the cooling water is guided from the cooling cavity 33 to the water cooling cavity (not shown in the figure), thereby cooling the total valve valve body 1 and cooling the heat exchange connecting pipe 24 to prevent the temperature of the heat exchange connecting pipe 24 from being too high.

[0035] In the design, the heat exchange through pipe 28 is provided in a segmented structure, and the heat exchange through pipe 28 comprises an upper through pipe 35 and a lower through pipe 36. The upper through pipe 35 is connected to the top end of the heat exchange first sleeve pipe 29, and the lower through pipe 36 is connected to the bottom end of the heat exchange first sleeve pipe 29. The inner diameters of the upper through pipe 35 and the lower through pipe 36 are the same. The upper through pipe 35 has a thin diameter part 37 on the side close to the lower through pipe 36. The inside of the lower through pipe 36 is provided with a thick diameter part 38 on the side close to the upper through pipe 35. The outer diameter of the thin diameter part 37 is smaller than the inner diameter of the thick diameter part 38, so that the thin diameter part 37 can extend into the thick diameter part 38. The thick diameter part 38 and the inner wall of the rest of the lower through pipe 36 form a stepped structure. After the thin diameter part 37 extends into the thick diameter part 38, there is a certain spacing between the thin diameter part 37 and the stepped surface of the stepped structure. The spacing can provide space for the deformation of the heat exchange through pipe 28 after it is heated and expanded, thereby avoiding the extrusion deformation of the part of the heat exchange through pipe 28 close to the total valve valve body 1 due to the lack of expansion space.

[0036] Further, the pipe wall of the heat exchange first sleeve pipe 29 extends away from the central position of the heat exchange first sleeve pipe 29 to form an adjusting pipe 39. The adjusting pipe 39 penetrates the pipe wall of the heat exchange second sleeve pipe 30. The air inlet proportional adjusting valve 25 is arranged on the end of the adjusting pipe 39 away from the heat exchange first sleeve pipe 29. The air inlet proportional adjusting valve 25 is in communication with the heat exchange cavity 31 in the heat exchange first sleeve pipe 29 through the adjusting pipe 39. The air outlet proportional adjusting valve 26 is arranged on the end of the heat exchange connecting pipe 24 away from the total valve valve body 1.

[0037] Specifically, in order to further reduce the temperature of the surface of the total valve valve body 1, thereby preventing the scalding of the staff, the water cooling jacket (not shown in the figure) is arranged on the total valve valve body 1, the water cooling jacket (not shown in the figure) is arranged on the outer surface of the total valve valve body 1, a water cooling cavity (not shown in the figure) is formed between the water cooling jacket (not shown in the figure) and the outer surface of the total valve valve body 1, the water cooling cavity (not shown in the figure) has a cooling water inlet 41 and a cooling water outlet (not shown in the figure), the cooling water inlet 41 is arranged at one end of the water cooling jacket (not shown in the figure) close to the air inlet flow channel 7, the cooling water outlet (not shown in the figure) is arranged at one end of the water cooling jacket (not shown in the figure) close to the air outlet flow channel 34, external cooling water enters the water cooling cavity (not shown in the figure) from the cooling water inlet 41 and gradually covers the outer surface of the total valve valve body 1, so as to cool the total valve valve body 1, and the cooled cooling water is discharged from the cooling water outlet (not shown in the figure).

[0038] The above description of disclosed embodiments enables one skilled in the art to make or use the application. Numerous modifications to these embodiments will be apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Therefore, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An ultra-high temperature quick valve comprising a total valve body, characterized in that: The total valve valve body is provided with a total valve valve cavity, a total valve medium pipe group and a flow channel double-layer heat preservation structure are arranged in the total valve valve cavity, the total valve valve body comprises a high temperature stop valve and an air quick valve, the high temperature stop valve and the air quick valve are connected, the total valve valve cavity comprises an air inlet valve cavity formed in the high temperature stop valve and an air outlet valve cavity formed in the air quick valve, the air inlet valve cavity is communicated with the air outlet valve cavity, the total valve medium pipe group comprises an air inlet bushing and an air outlet bushing, an air inlet flow channel is formed in the air inlet bushing, an air outlet flow channel is formed in the air outlet bushing, the air inlet flow channel and the air outlet flow channel are communicated, the air inlet bushing is arranged in the air inlet valve cavity, the air outlet bushing is arranged in the air outlet valve cavity, the flow channel double-layer heat preservation structure is wrapped on the outer surfaces of at least part of the air inlet bushing and the air outlet bushing to preserve the interiors of the air inlet bushing and the air outlet bushing, a blowout prevention connecting structure is arranged between the air outlet bushing and the air inlet bushing, the blowout prevention connecting structure is also arranged on the air inlet bushing and the air outlet bushing, the blowout prevention connecting structure divides the air inlet bushing and the air outlet bushing into a multi-section structure, one end of the blowout prevention connecting structure is welded and fixed with the corresponding air outlet bushing, the other end of the blowout prevention connecting structure is connected with the air outlet bushing of the adjacent one end of the air outlet bushing, and a blowout prevention gap is formed between the other end of the blowout prevention connecting structure and the air outlet bushing of the adjacent one end of the air outlet bushing, the blowout prevention connecting structure on the air inlet bushing is the same as the blowout prevention connecting structure on the air outlet bushing.

2. The ultra-high-temperature quick valve of claim 1, wherein: The flow channel double-layer heat preservation structure comprises a flow channel sleeve, the flow channel sleeve is arranged outside the air inlet bushing and the air outlet bushing, a first heat preservation cavity is formed between the flow channel sleeve and the air inlet bushing and the air outlet bushing, and a second heat preservation cavity is formed between the flow channel sleeve and the inner wall of the total valve valve cavity, and heat preservation materials are arranged in the first heat preservation cavity and the second heat preservation cavity.

3. The ultra-high temperature quick valve of claim 2, wherein: The blowout prevention connecting structure is in a tubular shape, the inner wall of the blowout prevention connecting structure is in a stepped structure, the part of the blowout prevention connecting structure corresponding to the air outlet bushing is sealingly connected with the air outlet bushing, and the part of the blowout prevention connecting structure corresponding to the air inlet bushing forms a blowout prevention gap in the radial direction between the air inlet bushing, the blowout prevention gap is communicated with the first heat preservation cavity.

4. The ultra-high-temperature quick valve of claim 2, wherein: The flow channel sleeve is provided with a transition connecting structure, the transition connecting structure comprises a first transition connecting structure and a second transition connecting structure, the first transition connecting structure extends obliquely from the end of the air inlet bushing close to the air outlet bushing to the cavity wall of the total valve valve cavity, the second transition connecting structure extends obliquely from the end of the air outlet bushing close to the air inlet bushing to the cavity wall of the total valve valve cavity, and the first transition connecting structure and the second transition connecting structure are connected with the cavity wall of the total valve valve cavity.

5. The ultra-high temperature quick valve of claim 1, wherein: The total valve valve body is also provided with a heat exchange device, the heat exchange device is arranged on the side of the total valve valve body close to the air quick valve, the heat exchange device comprises a heat exchange connecting pipe, an air inlet proportional adjusting valve and an air outlet proportional adjusting valve, a connecting hole is formed in the air quick valve, the two ends of the connecting hole are communicated with the total valve valve cavity and the outside of the total valve valve body, and one end of the heat exchange connecting pipe extends into the connecting hole and is communicated with the total valve valve cavity.

6. The ultra-high temperature quick valve of claim 5, wherein: The heat exchange connecting pipe is provided in a three-layer structure, and comprises a heat exchange through pipe, a heat exchange first sleeve pipe and a heat exchange second sleeve pipe. The heat exchange first sleeve pipe is arranged on the outer surface of the heat exchange through pipe, and the heat exchange second sleeve pipe is arranged on the outer surface of the heat exchange first sleeve pipe. A heat exchange cavity is formed between the heat exchange first sleeve pipe and the heat exchange through pipe. A plurality of communication ports are arranged on the end of the heat exchange through pipe close to the total valve valve body, and the heat exchange through pipe is communicated with the heat exchange cavity through the communication ports.

7. The ultra-high temperature quick valve of claim 6, wherein: The pipe wall of the heat exchange first sleeve pipe extends away from the central position of the heat exchange first sleeve pipe to form an adjusting pipe, the adjusting pipe is arranged through the pipe wall of the heat exchange second sleeve pipe, the air inlet proportional adjusting valve is arranged on the end of the adjusting pipe away from the heat exchange first sleeve pipe, and the air inlet proportional adjusting valve is communicated with the heat exchange cavity in the heat exchange first sleeve pipe through the adjusting pipe. The air outlet proportional adjusting valve is arranged on the end of the heat exchange connecting pipe away from the total valve valve body.

8. The ultra-high temperature quick valve of claim 5, wherein: The total valve valve body is further provided with a water cooling jacket, the water cooling jacket is arranged on the outer surface of the total valve valve body, a water cooling cavity is formed between the water cooling jacket and the outer surface of the total valve valve body, the water cooling cavity has a cooling water inlet and a cooling water outlet, the cooling water inlet is arranged on the end of the water cooling jacket close to the air inlet flow channel, and the cooling water outlet is arranged on the end of the water flow jacket close to the air outlet flow channel.

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