High temperature gas safety valve with pressure relief protection

Abstract

The application discloses a high-temperature gas safety valve with pressure relief protection and relates to the field of safety valves.The safety valve housing is provided with an inlet at the left side, and an outlet at the bottom; a pressure relief pipe is communicated with the right outer wall of the safety valve housing, a liquid cooling delivery box is fixedly installed at the lower end of the pressure relief pipe, a one-way gas outlet nozzle is installed at the right end of the pressure relief pipe, and is used for discharging gas. The high-temperature gas safety valve with pressure relief protection is provided with a pressure relief pipe and a multistage pressure relief mechanism, a one-way gas inlet assembly is used for guiding gas to enter step by step, a middle pressure relief assembly is used for buffering and decompressing, and a one-way gas outlet assembly is used for stably discharging, so that scalding hazards are further avoided; the heat-resistant sealing piece on the outer side of the disc, the synchronous linkage design of the opening mechanism and the elastic buffering effect of the buffering mechanism ensure that the valve is sensitive in action under high pressure, and the risk of jamming or failure is reduced.

Description

Technical Field

[0001] This invention relates to the field of safety valve technology, specifically a high-temperature gas safety valve with pressure relief protection. Background Technology

[0002] High-temperature gases are widely present in industrial furnaces, high-temperature energy storage systems, and other scenarios. Their temperatures often reach 600-1500℃, and pressure fluctuations can easily exceed the equipment's tolerance threshold, leading to overpressure risks. As a core safety component, the high-temperature gas safety valve is responsible for pressure relief protection after pressure exceeds the limit, and is crucial for ensuring system operation.

[0003] There are many types of existing gas safety valves, but they have certain shortcomings in use. For example, during pressure relief, excessively high or low temperatures can cause the valve to become sluggish or malfunction. To solve these problems, a hydraulic safety valve disclosed in existing technology (Chinese patent application number CN202421295936.7, application date 2024-06-05) can be referenced. This safety valve uses a temperature sensor to monitor the temperature of the hydraulic oil in real time. When the temperature of the hydraulic oil in the reservoir is too low, the heating structure is activated to heat the hydraulic oil, bringing it to an optimal operating temperature. When the temperature of the hydraulic oil is too high, the cooling mechanism is activated to simultaneously dissipate heat from the heating medium inside the heating structure and the hydraulic oil, restoring it to the optimal operating temperature. Another reference is existing technology (application number CN202021342141.9). A full-lift stainless steel safety valve is disclosed in Chinese Patent Application No. CN202421275902.1, filed on July 8, 2020. This safety valve places a sealing ring body at the connection between the safety valve body and the connecting pipe body and fixes it with bolts. The anti-corrosion layers on both sides of the sealing ring body provide anti-corrosion effect. The fluororubber layer provides high temperature resistance, radiation resistance and acid and alkali resistance. The nitrile rubber layer provides oil resistance, wear resistance, aging resistance and strong airtightness. Finally, a direct-flow safety valve is disclosed in prior art (Chinese Patent Application No. CN202421275902.1, filed on June 5, 2024). This safety valve is equipped with a precise adjustment device, which enables precise adjustment of the limiting value of the medium by the safety valve body, improves the stability of the safety valve body during use, and improves the safety of the safety valve body by stably adjusting the pressure of the support spring.

[0004] Although the aforementioned existing technologies can solve the problem of valves not acting sensitively when the temperature is too high or too low, there are still some problems in the process of use. When high-temperature gas is discharged, the high-temperature gas is directly sprayed, which can cause the direct stream of gas to be sprayed directly onto the action body, thus leading to the risk of burns.

[0005] Therefore, we propose a high-temperature gas safety valve with pressure relief protection to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a high-temperature gas safety valve with pressure relief protection, in order to solve the problem mentioned in the background art that when the high-temperature gas safety valve on the market discharges high-temperature gas, the high-temperature gas is directly sprayed, which will cause the direct flow of gas to be sprayed directly onto the active body, thus causing the risk of burns.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a high-temperature gas safety valve with pressure relief protection, comprising a safety valve housing, an inlet on the left side of the safety valve housing, and an outlet at the bottom of the safety valve housing; a blocking drive end is fixedly installed at the upper end of the safety valve housing, and a flow-limiting sealing ring is fixedly installed at the bottom of the output end of the blocking drive end for sealing the inlet; a pressure relief pipe is connected to the right outer wall of the safety valve housing, and a liquid-cooled delivery box is fixedly installed at the lower end of the pressure relief pipe; the upper end of the liquid-cooled delivery box is connected to both ends of the delivery pipe; the outer side of the delivery pipe is wrapped around the outer side of the pressure relief pipe; a multi-stage pressure relief mechanism is provided inside the pressure relief pipe for multi-stage cooling of the high-temperature gas inside the pressure relief pipe; the multi-stage pressure relief mechanism includes a one-way inlet, a mid-stage pressure relief mechanism, and a one-way outlet; the one-way inlet is installed on the left side of the pressure relief pipe, and the one-way outlet is installed on the right side of the pressure relief pipe for gas discharge.

[0008] Preferably, a pressure sensor is provided at one end of the blocking drive end that extends into the safety valve housing, and the outer side of the flow-limiting fitting ring is tightly attached to the outer side of the outlet.

[0009] Preferably, the mid-end pressure relief mechanism includes a bonding disc slidably disposed inside the pressure relief pipe, a receiving pipe fixed at the right end of the bonding disc, a fixing pipe slidably disposed inside the receiving pipe, the other end of the fixing pipe being fixed to the inner wall of a set of fixing crosses, and an opening mechanism disposed inside the bonding disc for conveying gas from the left space of the bonding disc to the right end.

[0010] Preferably, a heat-resistant sealing element is nested at the outer middle position of the bonding disc, and the outer wall of the heat-resistant sealing element is bonded to the inner wall of the pressure relief pipe. One side of the fixing pipe is connected to the inner wall of the receiving pipe through a return spring, and the inner wall of the receiving pipe and the outer wall of the fixing pipe are bonded to each other.

[0011] Preferably, the opening mechanism includes a twisted rod fixed between two sets of fixed crosses. The outer side of the twisted rod is sealed through the inner wall of the bonding disc. The outer side of the twisted rod is spirally connected to the inner side of a rotating gear. The outer side of the rotating gear is rotatably disposed on the right side wall of the bonding disc. A rotating rack is meshed with the outer side of the rotating gear. The outer side of the rotating rack is slidably disposed on the inner side of a slide groove located on the right side of the bonding disc. A heat-resistant sealing gasket is fixed at one end of the rotating rack. The outer side of the heat-resistant sealing gasket is attached to the inner wall of the air outlet. The air outlet is penetrating the inner wall of the bonding disc for gas discharge. A through hole is provided at the end of the receiving tube, and the through hole faces outwards from the air outlet for gas turbulence treatment.

[0012] Preferably, a sliding block is fixed on one side of the rotating rack, and the outer side of the sliding block is slidably disposed inside the slide groove. The heat-resistant sealing gasket forms a sliding structure between the rotating rack and the inner wall of the slide groove, and the opening mechanism has two sets of openings about the center position of the bonding disc.

[0013] Preferably, the outer walls of the two sets of fixed crosses are fixed to the inner side of the pressure relief pipe, the two sets of opening mechanisms work synchronously, and a buffer mechanism is provided on the right outer wall of the fitting plate. The buffer mechanism helps to cool down the gas in the left space.

[0014] Preferably, the buffer mechanism includes an abutment block extending from the inner wall of the pressure relief pipe, the outer side of the abutment block is fixed to one side of the moving rod, the outer side of the moving rod is slidably disposed on the inner wall of the pressure relief pipe, and a piston block is fixed at the end of the moving rod.

[0015] Preferably, an auxiliary channel is provided on the inner side of the pressure relief pipe, and a movable rod is slidably provided on the outer side of the auxiliary channel. The outer wall of the movable rod is connected to the inner wall of the auxiliary channel through a connecting spring, and one side of the auxiliary channel is connected to the left space inside the pressure relief pipe.

[0016] Preferably, the outer side of the contact block is in horizontal contact with the right side of the fitting plate, and the buffer mechanism is provided with several sets at equal angles about the center of the pressure relief pipe.

[0017] Compared with the prior art, the beneficial effects of this invention are as follows: This high-temperature gas safety valve with pressure relief protection, through a pressure relief pipe and a multi-stage pressure relief mechanism, guides gas into the gas in stages via a one-way inlet component, buffers and reduces pressure via a mid-stage pressure relief component, and smoothly discharges gas via a one-way outlet component, completely avoiding the risk of direct exposure to high-temperature gas. Simultaneously, the liquid-cooled delivery box and the wound delivery pipe form a closed-loop cooling system, rapidly reducing the temperature of the high-temperature gas and further mitigating the risk of burns. The heat-resistant seals on the outer side of the valve plate, the synchronous linkage design of the opening mechanism, and the elastic buffering effect of the buffer mechanism ensure sensitive valve operation under high pressure, reducing the risk of jamming or failure. Specific details are as follows:

[0018] 1. In the multi-stage pressure relief mechanism, the contact plate slides with the gas pressure, driving the opening mechanism to open the gas outlet step by step, so that the high-pressure gas is depressurized step by step, avoiding instantaneous direct injection; the liquid-cooled delivery box forms an efficient heat dissipation channel by winding the pressure relief pipe with the delivery pipe, which quickly reduces the gas temperature and solves the problem of high temperature direct injection burns from the source; at the same time, the one-way conduction design of the one-way air inlet and one-way air outlet prevents pressure fluctuations caused by gas backflow, and with the precise monitoring of the pressure sensor, ensures that the pressure relief process is stable and controllable;

[0019] 2. The sealing and fitting structure between the blocking drive end and the flow-limiting fitting ring ensures the sealing performance under normal conditions; the sliding fit between the fixed tube and the receiving tube, and the elastic contact design of the buffer mechanism can buffer the impact of high-pressure gas on the equipment and reduce component wear; the precise fit between the heat-resistant seal and the twist rod and rotating gear ensures the coordination of operation under high temperature environment and avoids sealing failure or jamming due to excessive temperature. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the main cross-sectional structure of the safety valve housing of the present invention;

[0022] Figure 3 This is a schematic diagram of the main cross-sectional structure of the pressure relief pipe of the present invention;

[0023] Figure 4 This is a schematic diagram of the main view of the fixed cross structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the main structure of the bonding disc of the present invention;

[0025] Figure 6 This is a side view of the bonding disc structure of the present invention;

[0026] Figure 7 This is a schematic diagram of the main structure of the rotating rack of the present invention;

[0027] Figure 8For the present invention Figure 4 Enlarged structural diagram at point A in the middle;

[0028] Figure 9 This is a schematic diagram of the main structure of the piston block of the present invention.

[0029] In the diagram: 1. Safety valve housing; 2. Inlet; 3. Outlet; 4. Blocking drive end; 5. Flow limiting fitting ring; 6. Pressure relief pipe; 601. Auxiliary channel; 7. Liquid-cooled delivery box; 8. Delivery pipe; 9. One-way air inlet; 10. Fitting plate; 11. Receiving pipe; 1101. Through hole; 12. Fixing pipe; 1201. Return spring; 13. Fixing cross; 14. Twisted rod; 15. Rotating gear; 16. Rotating rack; 1601. Sliding block; 17. Slide groove; 18. Heat-resistant sealing gasket; 19. Air outlet; 20. Abutment block; 21. Moving rod; 22. Connecting spring; 23. Piston block; 24. One-way air outlet. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figures 1-9 The present invention provides the following technical solution: a high-temperature gas safety valve with pressure relief protection.

[0032] Example 1: To address the issue of high-temperature gas safety valves on the market where direct discharge of high-temperature gas results in a direct stream of gas hitting the affected body and posing a risk of burns, please refer to the attached... Figure 1 -Appendix Figure 3 An inlet 2 is provided on the left side of the safety valve housing 1, and an outlet 3 is provided at the bottom of the safety valve housing 1. A blocking drive end 4 is fixedly installed at the upper end of the safety valve housing 1. A flow-limiting sealing ring 5 is fixed at the bottom of the output end of the blocking drive end 4 for blocking the inlet 2. A pressure relief pipe 6 is connected to the right outer wall of the safety valve housing 1. A liquid-cooled delivery box 7 is fixedly installed at the lower end of the pressure relief pipe 6. The upper end of the liquid-cooled delivery box 7 is connected to both ends of the delivery pipe 8. The outer side of the delivery pipe 8 is wrapped around the outer side of the pressure relief pipe 6. A pressure sensor is provided at the end of the blocking drive end 4 that extends into the safety valve housing 1. The outer side of the flow-limiting sealing ring 5 is tightly attached to the outer side of the outlet 3.

[0033] In the initial state, the flow-limiting fitting ring 5 fixed at the output end of the blocking drive end 4 is tightly attached to the outside of the outlet 3, achieving a seal at the outlet 3. After the high-temperature gas enters the safety valve housing 1 through the inlet 2, it can be transmitted along the normal flow path. The pressure sensor that extends into the safety valve housing 1 from the blocking drive end 4 monitors the gas pressure inside the housing in real time. When the pressure exceeds the threshold, the pressure sensor sends a signal to the blocking drive end 4, which drives the flow-limiting fitting ring 5 to move, sealing the outlet 3. At the same time, it guides part of the high-pressure high-temperature gas to be diverted to the pressure relief pipe 6 connected to the right side of the safety valve housing 1. At this time, the liquid-cooled delivery box 7 starts working, and the cooling medium circulates in the delivery pipe 8. Since the delivery pipe 8 is wrapped around the outside of the pressure relief pipe 6, it quickly absorbs the heat of the high-temperature gas in the pressure relief pipe 6 through heat conduction, achieving initial cooling of the gas and avoiding the risk of direct burns caused by the direct discharge of high-temperature gas.

[0034] Example 2: Based on Example 1, this example discloses a multi-stage pressure relief mechanism. The multi-stage buffer mechanism prevents direct gas discharge, thus enabling cooling. See attached diagram. Figure 3 -Appendix Figure 7The pressure relief pipe 6 is internally equipped with a multi-stage pressure relief mechanism. This mechanism is used to achieve multi-stage cooling of the high-temperature gas inside the pipe 6. The multi-stage pressure relief mechanism includes a one-way inlet 9, a mid-section pressure relief mechanism, and a one-way outlet 24. The one-way inlet 9 is installed on the left side of the pressure relief pipe 6, and the one-way outlet 24 is installed on the right side for gas discharge. The mid-section pressure relief mechanism includes a sliding contact plate 10 inside the pressure relief pipe 6. A receiving tube 11 is fixed to the right end of the contact plate 10. A fixing tube 12 is slidably disposed on the inner side of the fitting plate 11. The other end of the fixing tube 12 is fixed to the inner wall of a set of fixing crosses 13. An opening mechanism is disposed on the inner side of the fitting plate 10. The opening mechanism is used to transport gas from the left space of the fitting plate 10 to the right end. A heat-resistant sealing element is nested on the outer side of the middle end of the fitting plate 10. The outer wall of the heat-resistant sealing element is attached to the inner wall of the pressure relief pipe 6. One side of the fixing tube 12 is connected to the inner wall of the receiving tube 11 through a return spring 1201. The opening mechanism includes two sets of fixing crosses 13. The twisted rod 14 is fixed between the cross braces 13. The outer side of the twisted rod 14 is sealed through the inner wall of the bonding plate 10. The outer side of the twisted rod 14 is spirally connected to the inner side of the rotating gear 15. The outer side of the rotating gear 15 is rotatably set at the right side wall of the bonding plate 10. The outer side of the rotating gear 15 is meshed with a rotating rack 16. The outer side of the rotating rack 16 is slidably set at the inner side of the slide groove 17. The slide groove 17 is opened at the right side of the bonding plate 10. A heat-resistant sealing gasket 18 is fixed at one end of the rotating rack 16. The outer side of 8 is attached to the inner wall of the air outlet 19, which is opened through the inner wall of the bonding plate 10 for gas discharge; a sliding block 1601 is fixed on one side of the rotating rack 16, and the outer side of the sliding block 1601 is slidably disposed inside the slide groove 17. The heat-resistant sealing gasket 18 forms a sliding structure between the rotating rack 16 and the inner wall of the slide groove 17, and two sets of opening mechanisms are provided about the center position of the bonding plate 10; the outer wall positions of the two sets of fixing crosses 13 are fixed to the inner side of the pressure relief pipe 6, and the two sets of opening mechanisms work synchronously.

[0035] When high-temperature gas enters the pressure relief pipe 6 from the safety valve housing 1, it first enters the left space of the multi-stage pressure relief mechanism through the one-way inlet 9. The one-way inlet 9 can prevent gas backflow and pressure fluctuations. The gas accumulates in the left space, causing the pressure to rise and pushing the bonding plate 10 to slide to the right. The heat-resistant seal on the outside of the bonding plate 10 is always tightly fitted with the inner wall of the pressure relief pipe 6, ensuring that the gas can only flow through the preset channel. When the bonding plate 10 moves, it drives the receiving pipe 11 fixed at the left end to slide along the fixed pipe 12. The return spring 1201 is compressed and generates a reverse elastic force, forming the first pressure reduction buffer. At the same time, since the twisted rod 14 is fixed between the two sets of fixed crosses 13 and the seal penetrates the bonding plate, the pressure relief mechanism is effectively controlled. The moving of the mating disc 10 causes the spiral rod 14 and the rotating gear 15 to undergo relative spiral motion, driving the rotating gear 15 to rotate on the right side wall of the mating disc 10. The rotating gear 15 meshes with the rotating rack 16, causing the rotating rack 16 to slide along the slide groove 17 through the sliding block 1601, thereby pulling the heat-resistant sealing gasket 18 away from the air outlet 19. The two sets of opening mechanisms symmetrical about the center of the mating disc 10 work synchronously, allowing the high-temperature gas in the left space to enter the right space of the mating disc 10 in stages through the air outlet 19, achieving a second stage of pressure reduction and preventing instantaneous gas ejection. Finally, the gas after two stages of pressure reduction is smoothly discharged through the one-way air outlet 24, further reducing the risk of direct injection.

[0036] Example 3: This example mainly discloses a buffer mechanism, which can buffer the gas inside the left space during the operation of the middle pressure relief mechanism in Example 2. See attached diagram. Figure 3 -Appendix Figure 5 Appendix Figure 8 and attached Figure 9 A buffer mechanism is provided on the outer right side of the bonding plate 10. The buffer mechanism helps to cool the gas in the left space. The buffer mechanism includes an abutment block 20 extending from the inner wall of the pressure relief pipe 6. The outer side of the abutment block 20 is fixed to one side of the moving rod 21. The outer side of the moving rod 21 is slidably disposed on the inner wall of the pressure relief pipe 6. A piston block 23 is fixed at the end of the moving rod 21. An auxiliary channel 601 is provided on the inner side of the pressure relief pipe 6. The moving rod 21 is slidably disposed on the outer side of the auxiliary channel 601. The outer wall of the moving rod 21 is connected to the inner wall of the auxiliary channel 601 through a connecting spring 22. One side of the auxiliary channel 601 is connected to the left space inside the pressure relief pipe 6. The outer side of the abutment block 20 is in horizontal contact with the right side of the bonding plate 10. The buffer mechanism is provided with several sets of equal angles about the center of the pressure relief pipe 6.

[0037] When the bonding disc 10 slides to the right under the pressure of the gas in the left space, its right side wall comes into horizontal contact with the contact block 20 of the buffer mechanism and applies a pushing force. After the contact block 20 is subjected to force, it drives the moving rod 21 to slide along the auxiliary channel 601 inside the pressure relief pipe 6. The connecting spring 22 on the outer wall of the moving rod 21 is compressed, and at the same time, the piston block 23 at the end of the moving rod 21 moves synchronously in the auxiliary channel 601. Since the auxiliary channel 601 is connected to the left space inside the pressure relief pipe 6, the movement of the piston block 23 can absorb part of the gas pressure, forming a third buffer, which effectively weakens the impact force of the gas. Several sets of buffer mechanisms set at the same angle about the center of the pressure relief pipe 6 are subjected to force synchronously, ensuring that the bonding disc 10 moves smoothly and avoiding gas turbulence jet caused by local pressure concentration. At the same time, the buffer mechanism prolongs the residence time of the gas in the pressure relief pipe 6, so that the liquid-cooled delivery box 7 and the delivery pipe 8 have more time to exchange heat, further reducing the gas temperature, and then cooling the high-temperature gas.

[0038] Example 4: This example mainly involves turbulence treatment of the high-temperature gas transported from the left space to the right space to accelerate the subsequent cooling rate. See attached diagram for details. Figure 5 The end of the receiving tube 11 is provided with a through hole 1101. The through hole 1101 is oriented towards the outside of the air outlet 19 for gas turbulence treatment. The inner wall of the receiving tube 11 and the outer wall of the fixed tube 12 are in contact with each other.

[0039] When the opening mechanism is opened, the gas inside the pressure relief pipe 6 will be transported from the left space to the right space. At this time, the bonding plate 10 will drive the receiving pipe 11 to move. The fixed pipe 12, which is slidably bonded to the inner wall of the receiving pipe 11, will squeeze the gas inside the receiving pipe 11, causing the gas inside the receiving pipe 11 to be discharged through the through hole 1101. Since the through hole 1101 faces the outside of the air outlet 19, when the gas from the left space is transported to the right space, the interference of the airflow will facilitate the subsequent cooling process and avoid high-temperature discharge.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-temperature gas safety valve with pressure relief protection, comprising a safety valve housing (1), wherein an inlet (2) is provided on the left side of the safety valve housing (1), and an outlet (3) is provided at the bottom of the safety valve housing (1); characterized in that: A blocking drive end (4) is fixedly installed at the upper end of the safety valve housing (1). A flow-limiting sealing ring (5) is fixed at the bottom of the output end of the blocking drive end (4) for sealing the inlet (2). A pressure relief pipe (6) is connected to the right outer wall of the safety valve housing (1). A liquid-cooled delivery box (7) is fixedly installed at the lower end of the pressure relief pipe (6). The upper end of the liquid-cooled delivery box (7) is connected to both ends of the delivery pipe (8). The outer side of the tube (8) is wrapped around the outer side of the pressure relief tube (6). The pressure relief tube (6) is equipped with a multi-stage pressure relief mechanism. The multi-stage pressure relief mechanism is used to achieve multi-stage cooling treatment of the high-temperature gas inside the pressure relief tube (6). The multi-stage pressure relief mechanism includes a one-way air inlet (9), a middle pressure relief mechanism and a one-way air outlet (24). The one-way air inlet (9) is installed on the left side of the pressure relief tube (6) and the one-way air outlet (24) is installed on the right side of the pressure relief tube (6) for gas to be discharged. The mid-end pressure relief mechanism includes a bonding plate (10) that is slidably disposed inside the pressure relief pipe (6). A receiving pipe (11) is fixed at the right end of the bonding plate (10). A fixing pipe (12) is slidably disposed inside the receiving pipe (11). The other end of the fixing pipe (12) is fixed to the inner wall of a set of fixing crosses (13). An opening mechanism is disposed inside the bonding plate (10). The opening mechanism is used to transport gas from the left space of the bonding plate (10) to the right end. The opening mechanism includes a twisted rod (14) fixed between two sets of fixed crosses (13). The outer side of the twisted rod (14) is sealed through the inner wall of the bonding disc (10). The outer side of the twisted rod (14) is spirally connected to the inner side of the rotating gear (15). The outer side of the rotating gear (15) is rotatably positioned on the right side wall of the bonding disc (10). The outer side of the rotating gear (15) is meshed with a rotating rack (16). The outer side of the rotating rack (16) is slidably positioned in the groove (17). On the inner side, the groove (17) is opened on the right side of the bonding plate (10). A heat-resistant sealing gasket (18) is fixed at one end of the rotating rack (16). The outer side of the heat-resistant sealing gasket (18) is attached to the inner wall of the air outlet (19). The air outlet (19) is opened through the inner wall of the bonding plate (10) for gas discharge. The end of the receiving tube (11) is provided with a through hole (1101). The through hole (1101) is oriented towards the outer side of the air outlet (19) for gas turbulence treatment.

2. A high-temperature gas safety valve with pressure relief protection according to claim 1, characterized in that: A pressure sensor is provided at one end of the blocking drive end (4) that extends into the safety valve housing (1), and the outer side of the flow limiting fitting ring (5) is tightly attached to the outer side of the outlet (3).

3. A high-temperature gas safety valve with pressure relief protection according to claim 1, characterized in that: A heat-resistant seal is nested at the outer middle position of the fitting disc (10). The outer wall of the heat-resistant seal is attached to the inner wall of the pressure relief pipe (6). One side of the fixed pipe (12) is connected to the inner wall of the receiving pipe (11) through a reset spring (1201). The inner wall of the receiving pipe (11) and the outer wall of the fixed pipe (12) are attached to each other.

4. A high-temperature gas safety valve with pressure relief protection according to claim 1, characterized in that: A sliding block (1601) is fixed on one side of the rotating rack (16), and the outer side of the sliding block (1601) is slidably disposed inside the groove (17). The heat-resistant sealing gasket (18) forms a sliding structure between the rotating rack (16) and the inner wall of the groove (17), and the opening mechanism has two sets of openings about the center position of the bonding disc (10).

5. A high-temperature gas safety valve with pressure relief protection according to claim 1, characterized in that: The outer walls of the two sets of fixed crosses (13) are fixed to the inner side of the pressure relief pipe (6). The two sets of opening mechanisms work synchronously. A buffer mechanism is provided on the right outer wall of the fitting plate (10). The setting of the buffer mechanism helps to cool down the gas in the left space.

6. A high-temperature gas safety valve with pressure relief protection according to claim 5, characterized in that: The buffer mechanism includes an abutment block (20) extending from the inner wall of the pressure relief pipe (6). The outer side of the abutment block (20) is fixed to one side of the moving rod (21). The outer side of the moving rod (21) is slidably disposed on the inner wall of the pressure relief pipe (6). A piston block (23) is fixed at the end of the moving rod (21).

7. A high-temperature gas safety valve with pressure relief protection according to claim 6, characterized in that: An auxiliary channel (601) is provided on the inner side of the pressure relief pipe (6), and a moving rod (21) is slidably provided on the outer side of the auxiliary channel (601). The outer wall of the moving rod (21) is connected to the inner wall of the auxiliary channel (601) through a connecting spring (22). One side of the auxiliary channel (601) is connected to the left space inside the pressure relief pipe (6).

8. A high-temperature gas safety valve with pressure relief protection according to claim 7, characterized in that: The outer side of the contact block (20) is in horizontal contact with the right side of the fitting plate (10), and the buffer mechanism is provided with several sets at the same angle about the center of the pressure relief pipe (6).

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