Anti-explosion / explosion-suppression dual-protection flameless relief device for pressure-bearing equipment of petrochemical enterprise

Abstract

The utility model provides an explosion-resistant / explosion-suppression dual-protection flameless relief device for pressure-bearing equipment of petrochemical enterprises, which relates to the technical field of safe overpressure relief, fire resistance and explosion suppression and comprises a pressure-bearing mechanism, an explosion venting mechanism, an intelligent fire extinguishing mechanism and a relief pipeline. The pressure bearing mechanism is connected with the explosion venting mechanism through a discharge pipeline; the explosion relief protection effect can be achieved through an adjustable compression spring and a spring gland valve seat in an explosion venting valve body in the explosion venting mechanism. And the spring pressure adjusting rod and the pressure sensor can adjust and monitor the pressing force of the spring, so that the explosion relief pressure can be adjusted and controlled. According to the device, high-temperature gas, flames and pressure waves in the pressure-bearing mechanism are discharged into the explosion venting mechanism through the release pipeline and the release valve body, so that the explosion pressure is prevented from reaching a threshold value of the pressure-bearing mechanism; the discharged high-temperature gas, flames and pressure waves are subjected to safety treatment in the explosion venting mechanism; and effective protection on the pressure-bearing equipment is realized.

Description

Technical Field

[0001] The utility model belongs to the field of safety protection of petrochemical enterprises, in particular to a flameless discharge device for explosion prevention / suppression dual protection of pressure-bearing equipment in petrochemical enterprises. Background Art

[0002] Various pressure vessels used in industry often have the problem of increased internal pressure during use. If an explosion occurs inside the equipment, the instantaneous pressure exceeds the safety allowable value of the equipment, which will cause damage to the equipment. At present, the most common method to avoid equipment overpressure is overpressure relief, which uses bursting discs or safety valves to release the overpressure medium in time. In view of the threat posed by explosion accidents inside high-pressure equipment to industrial production and safe production, relevant research should be carried out on explosion accidents in pressure vessels and effective protective measures should be taken to avoid causing derivative accidents and disasters. Explosion relief is an effective protection technology widely used in containers and equipment with explosion risks. Its essence is that when an explosion occurs and pressure accumulates, the relief device installed on the container opens before the container, and the high-temperature gas, flame and pressure wave are discharged to the outside of the container through the relief device to prevent the explosion pressure from reaching the container's bursting pressure.

[0003] The flame of explosion discharge can induce secondary disasters, and flameless discharge of explosion can better protect against explosions. At present, most of the discharge devices of explosions are vertical to the explosion vent, and the discharge flame and shock wave will have a strong destructive effect on external equipment or buildings. At the same time, the explosion venting device cannot be quickly closed after it is opened during the explosion venting process, causing all the materials inside the container or pipeline to be discharged into the external environment space, thereby causing waste of raw materials and environmental pollution, and even causing secondary and multiple explosion accidents in the external space. The incomplete basic research on explosion discharge has made it impossible to reveal the mechanism of explosion discharge and the establishment of the essential model. The existing research cannot form a complete theoretical system. The lack of basic theory and research methods greatly restricts the research and application of process industry chain accident disaster prevention and control technology. In summary, it is necessary to invent an explosion discharge safety device that can integrate discharge, fire prevention and explosion suppression. Utility Model Content

[0004] The utility model overcomes the shortcomings of the prior art and provides a flameless discharge device with double protection for explosion prevention / suppression of pressure equipment in petrochemical enterprises, especially having the characteristics of discharge, fire prevention and explosion suppression in one.

[0005] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0006] A flameless discharge device for explosion prevention / suppression dual protection of pressure equipment in petrochemical enterprises, comprising: a pressure-bearing mechanism, an explosion-relief mechanism, an intelligent fire-extinguishing mechanism and a discharge pipe 26; the pressure-bearing mechanism is connected to the explosion-relief mechanism via the discharge pipe 26;

[0007] The pressure-bearing mechanism includes: a pressure-bearing container 25, an upper flange cover 20-1 and a lower flange cover 20-2; the upper and lower ends of the pressure-bearing container 25 are sealed by the upper flange cover 20-1 and the lower flange cover 20-2; and the upper flange cover 20-1 is provided with a circular opening for installing a discharge pipe 26;

[0008] The explosion relief mechanism comprises: an explosion relief housing 1, a corrugated flame arrester 2 and an explosion relief valve body;

[0009] The explosion-relief housing 1 is a cylindrical housing, with an edge on the outer side of the upper port and a threaded hole on the edge, and an opening at the lower end connected to the discharge pipe 26. The corrugated flame arrester 2 is arranged in the middle section inside the explosion-relief housing 1. The corrugated flame arrester 2 is a toroidal structure, and the hollow part thereof is used to install the explosion-relief valve body;

[0010] Intelligent fire extinguishing mechanism: includes a water storage tank 8, a compressed gas cylinder 7, a first solenoid valve 11-1, a second solenoid valve 11-2, an intelligent control box 9, a high-precision pressure gauge 10, a liquid level meter 12, a ring water pipe 16, an atomizing nozzle 18 and a flame detector 13.

[0011] Further, the explosion relief valve body includes: an explosion relief valve body cover 21, a reducing flange 24, a spring pressure cover valve seat 4, an adjustable compression spring 6, a spring fixing bolt 27, a spring pressure adjustment rod 14, a triangular fixing bracket 17, a pressure sensor 19, a spring pressure plate 28, a balance pressure plate 29, and a spring pressure adjustment rod pressure plate 30;

[0012] The reducer flange 24 is assembled from a flange and two pipes of different diameters; the flange has a wider edge with an annular opening on the edge; the reducer flange 24 is a hollow structure. An annular water pipe 16 is installed at the annular opening of the flange, and the preferred annular water pipe can be a double-pipe split design such as Figure 3 As shown, an atomizing nozzle is arranged on the annular water pipe 16, and the annular water pipe 16 is connected to the intelligent fire extinguishing mechanism through a pipeline; the explosion relief valve body cover 21 has the same size, annular opening and threaded hole as the flange plate of the reducing flange 24, and the explosion relief valve body cover 21, the reducing flange 24 and the explosion relief shell 1 are fixedly connected by bolts.

[0013] Furthermore, a spring pressure cover valve seat 4 is arranged at the bottom end inside the reducing flange 24, and the spring pressure cover valve seat 4 is connected to the adjustable compression spring 6 through a spring fixing bolt 27, and the other end of the adjustable compression spring 6 is connected to the spring pressure plate 28; a pressure sensor 19 is arranged between the spring pressure plate 28 and the balancing pressure plate 29; the force-bearing area of ​​the pressure sensor 19 is in surface contact with the spring pressure plate 28; the base bolt of the pressure sensor 19 is installed on the balancing pressure plate 29; the spring pressure cover valve seat 4 is a cylindrical structure, and the spring pressure plate 28 and the balancing pressure plate 29 are both circular; the outer diameter of the spring pressure cover valve seat 4, the diameter of the spring pressure plate 28 and the balancing pressure plate 29 are the same as the inner diameter of the small pipe of the reducing flange 24, and can move up and down in the small pipe.

[0014] Furthermore, the spring pressure adjusting rod pressure plate 30 is circular, and its diameter is the same as the inner diameter of the large pipe of the reducing flange 24; and it is fixed to the bottom end of the large pipe of the reducing flange 24 by screws; a threaded hole is opened at the center position of the spring pressure adjusting rod pressure plate 30, and the spring pressure adjusting rod 14 passes through the threaded hole and is threadedly connected to the spring pressure adjusting rod pressure plate 30; a triangular fixing bracket 17 is provided at the bottom of the spring pressure adjusting rod 14, and each bracket angle of the triangular fixing bracket 17 is 120 degrees, and the three bracket feet of the triangular fixing bracket 17 are fixedly connected to the balancing pressure plate 29 with bolts.

[0015] Furthermore, the pressure sensor 19 is connected to the precision digital pressure gauge 15, and the compression degree of the adjustable compression spring 6 is adjusted by manually twisting the spring pressure adjusting rod 14 downward. The precision digital pressure gauge 15 displays the elastic force of the adjustable compression spring 6 in real time. By adjusting the compression degree of the adjustable compression spring 6, the explosion relief pressure is regulated, that is, the opening force of the spring pressure cover valve seat 4 is adjusted.

[0016] Furthermore, a groove is processed on the flange of the discharge pipe 26, and a ceramic fiber sealing gasket 5 is installed in the groove. The spring-loaded valve seat 4 is tightly pressed against the outlet flange groove of the pressure container 25 under the elastic force of the adjustable compression spring 6. The ceramic fiber sealing gasket 5 is installed on the groove to ensure effective sealing of the two after compression.

[0017] Furthermore, it is characterized in that: the inner wall of the explosion-proof shell 1 and the outer wall of the reducing flange 24 are also provided with a front compression gasket 23 and a rear compression gasket 22; the upper and lower ends of the corrugated flame arrester 2 are clamped and fixed by the front compression gasket 23 and the rear compression gasket 22 respectively, and the front compression gasket 23 is processed with a groove, and the compression spring 3 is installed in the groove, so that the corrugated flame arrester 2 is fixed and compressed, and the compression spring 3 plays a radial buffering role.

[0018] Furthermore, the annular water pipe 16 in the intelligent fire extinguishing mechanism is installed at the annular opening of the flange plate of the reducing flange 24, and the atomizing nozzles 18 are evenly installed on the water pipe; the annular water pipe 16 is connected to the water tank 8 through a pipeline and a second solenoid valve 11-2, and the compressed gas cylinder 7 is connected to the water tank 8 through a pipeline and a first solenoid valve 11-1; a high-precision pressure gauge 10 is installed on the compressed gas cylinder 7, and a liquid level gauge 12 is set on the water tank 8; the flame detector 13 is installed on the outer wall of the reducing flange 24, and the flame detector 13, the first solenoid valve 11-1, and the second solenoid valve 11-2 are all connected to the intelligent control box 9. When a flame is detected, the controller in the intelligent control box 9 opens the first solenoid valve 11-1 and the second solenoid valve 11-2 to achieve real-time water spray suppression.

[0019] The beneficial effects of the utility model are:

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] 1. The utility model can realize the regulation of explosion relief pressure by changing the spring compression force through the spring pressure adjustment rod, avoid the discharge from causing greater impact damage and realize the automatic closing function. The sealing effect of the ceramic fiber sealing gasket can effectively prevent the flammable medium from being discharged into the external environment to induce secondary disasters.

[0022] 2. The utility model forms an open annular cavity by combining the explosion relief shell and the explosion relief valve body. The explosion shock wave and flame act vertically on the spring pressure cover valve seat and then are discharged in an annular direction. The change in direction can greatly reduce the explosion shock wave intensity and flame propagation speed when passing through the annular corrugated flame arrester device, and can more effectively achieve flameless discharge, reduce the explosion relief pressure and the spread of the explosion flame.

[0023] 3. The utility model can achieve real-time suppression of explosion flames and achieve flameless discharge by installing flame detectors, annular water pipes equipped with atomizing nozzles, intelligent control boxes, water storage tanks and compressed gas cylinders. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0025] Figure 1 It is a structural schematic diagram of the utility model;

[0026] Figure 2 It is a schematic diagram that a circular opening is provided on the flange plate of a reducer flange and a circular water pipe is installed at the opening;

[0027] Figure 3 It is a schematic diagram of a circular water pipe adopting a double-pipe split design;

[0028] Figure 4 It is a schematic diagram of the structure for installing atomizing nozzles.

[0029] In the figure: 1. explosion relief shell, 2. corrugated flame arrester, 3. compression spring, 4. spring pressure cover valve seat, 5. ceramic fiber sealing gasket, 6. adjustable compression spring, 7. compressed gas cylinder, 8. water storage tank, 9. intelligent control box, 10. high-precision pressure gauge, 11-1. first solenoid valve, 11-2 second solenoid valve, 12. liquid level meter, 13. flame detector, 14. spring pressure adjustment rod, 15. precision digital pressure gauge, 16. annular water pipe, 17. triangular fixing bracket, 18. atomizing nozzle, 19. pressure sensor, 20-1. upper flange cover, 20-2. lower flange cover, 21. explosion relief valve body cover, 22. rear compression gasket, 23. front compression gasket, 24. reducing flange, 25. pressure container, 26. discharge pipe, 27. spring fixing bolt, 28. spring pressure plate, 29. balance pressure plate, 30. spring pressure adjustment rod pressure plate. DETAILED DESCRIPTION

[0030] Below, the technical solution of a flameless discharge device with double explosion prevention / suppression protection for pressure equipment in petrochemical enterprises provided by the utility model embodiment will be described in detail through examples.

[0031] like Figure 1 A flameless discharge device for explosion prevention / suppression dual protection of pressure equipment in petrochemical enterprises includes: a pressure-bearing mechanism, an explosion-relief mechanism, an intelligent fire-extinguishing mechanism, and a discharge pipe 26. The pressure-bearing mechanism is connected to the explosion-relief mechanism through the discharge pipe 26; the utility model discharges the high-temperature gas, flame, and pressure wave in the pressure-bearing mechanism into the explosion-relief mechanism through the discharge pipe 26 to prevent the explosion pressure from reaching the threshold of the pressure-bearing mechanism; and then the discharged high-temperature gas, flame, and pressure wave are safely processed in the explosion-relief mechanism.

[0032] The pressure-bearing mechanism includes: a pressure container 25, an upper flange cover 20-1 and a lower flange cover 20-2; the upper and lower ends of the pressure container 25 are sealed by the upper flange cover 20-1 and the lower flange cover 20-2; and the upper flange cover 20-1 is provided with a circular opening for installing a discharge pipe 26.

[0033] The explosion relief mechanism comprises: an explosion relief housing 1, a corrugated flame arrester 2 and an explosion relief valve body;

[0034] The explosion relief housing 1 is a cylindrical housing, with an edge on the outer side of the upper port and a threaded hole on the edge, and an opening at the lower end connected to the discharge pipe 26. The corrugated flame arrester 2 is arranged in the middle section inside the explosion relief housing 1. The corrugated flame arrester 2 is a torus structure, and the hollow part thereof is used to install the explosion relief valve body.

[0035] The explosion relief valve body includes: an explosion relief valve body cover 21, a reducing flange 24, a spring pressure cover valve seat 4, an adjustable compression spring 6, a spring fixing bolt 27, a spring pressure adjustment rod 14, a triangular fixing bracket 17, a pressure sensor 19, a spring pressure plate 28, a balance pressure plate 29, and a spring pressure adjustment rod pressure plate 30.

[0036] Reducer flange 24 Figure 2 As shown, it is assembled from a flange and two pipes of different diameters; the flange has a wider edge with an annular opening on the edge; the reducing flange 24 is a hollow structure. An annular water pipe 16 is installed at the annular opening of the flange, and the preferred annular water pipe can adopt a double-pipe split design as shown in FIG. Figure 3 As shown, an atomizing nozzle is arranged on the annular water pipe 16, and the annular water pipe 16 is connected to the intelligent fire extinguishing mechanism (the water storage tank 8) through a pipeline. The explosion relief valve body cover 21 has the same size, annular opening and threaded hole as the flange of the reducing flange 24, and the explosion relief valve body cover 21, the reducing flange 24 and the explosion relief housing 1 are fixedly connected by bolts.

[0037] A spring pressure cover valve seat 4 is arranged at the bottom end of the reducing flange 24, and the spring pressure cover valve seat 4 is connected to the adjustable compression spring 6 through the spring fixing bolt 27, and the other end of the adjustable compression spring 6 is connected to the spring pressure plate 28; a pressure sensor 19 is arranged between the spring pressure plate 28 and the balance pressure plate 29; the force-bearing area of ​​the pressure sensor 19 is in surface contact with the spring pressure plate 28. The base bolts of the pressure sensor 19 are installed on the balance pressure plate 29. The spring pressure cover valve seat 4 is a cylindrical structure, and the spring pressure plate 28 and the balance pressure plate 29 are both circular. The outer diameter of the spring pressure cover valve seat 4, the diameter of the spring pressure plate 28 and the balance pressure plate 29 are the same as the inner diameter of the small pipe of the reducing flange 24, and can move up and down in the small pipe.

[0038] The spring pressure regulating rod pressure plate 30 is circular, and its diameter is the same as the inner diameter of the large pipe of the reducing flange 24; and it is fixed to the bottom end of the large pipe of the reducing flange 24 by screws. A threaded hole is opened at the center of the spring pressure regulating rod pressure plate 30, and the spring pressure regulating rod 14 passes through the threaded hole and is threadedly connected to the spring pressure regulating rod pressure plate 30; a triangular fixing bracket 17 is provided at the bottom of the spring pressure regulating rod 14, and each bracket of the triangular fixing bracket 17 has an angle of 120 degrees, and the three bracket foot bolts of the triangular fixing bracket 17 are fixedly connected to the balance pressure plate 29. Such a design can achieve a balancing effect and prevent the pressure sensor 19 from tilting during the regulation process.

[0039] The pressure sensor 19 is connected to the precision digital pressure gauge 15. The compression degree of the adjustable compression spring 6 is adjusted by manually twisting the spring pressure adjusting rod 14 downward. The precision digital pressure gauge 15 can display the elastic force of the adjustable compression spring 6 in real time. By adjusting the compression degree of the adjustable compression spring 6, the explosion relief pressure can be regulated, that is, the opening force of the spring pressure cover valve seat 4 can be adjusted.

[0040] The spring-gland valve seat 4 is constrained by the wall surface in the reducer flange 24 and can only slide in the radial direction (vertical direction) and does not oscillate in the axial direction (horizontal direction). The flange of the discharge pipe 26 is processed with a groove, and the ceramic fiber sealing gasket 5 is installed in the groove. The spring-gland valve seat 4 is tightly pressed against the outlet flange groove of the pressure container 25 under the elastic force of the adjustable compression spring 6. The ceramic fiber sealing gasket 5 installed on the groove can ensure the effective sealing of the two after compression.

[0041] A front compression gasket 23 and a rear compression gasket 22 are also provided on the inner wall of the explosion-relief shell 1 and the outer wall of the reducing flange 24; the upper and lower ends of the corrugated flame arrester 2 are clamped and fixed by the front compression gasket 23 and the rear compression gasket 22 respectively, and a groove is processed on the front compression gasket 23, and the compression spring 3 is installed in the groove, so that the corrugated flame arrester 2 is fixed and compressed, and the compression spring 3 plays a radial buffering role.

[0042] Intelligent fire extinguishing mechanism: including water storage tank 8, compressed gas cylinder 7, solenoid valve 11-1~11-2, intelligent control box 9, high-precision pressure gauge 10, liquid level meter 12, annular water pipe 16, atomizing nozzle 18 and flame detector 13. An annular water pipe 16 is installed at the annular opening of the flange of the reducer flange 24, and atomizing nozzles 18 are evenly installed on the water pipe; the annular water pipe is connected to the water storage tank 8 through the pipeline and the solenoid valve 11-2, and the compressed gas cylinder 7 is connected to the water storage tank 8 through the solenoid valve 11-1 to provide a compressed gas source for the water spraying device; a high-precision pressure gauge 10 is installed on the compressed gas cylinder 7, and a liquid level meter 12 is set on the water storage tank 8; the flame detector 13 is installed on the outer wall of the reducer flange 24, and the flame detector 13 and the solenoid valves 11-1~11-2 are connected to the intelligent control box 9. When a flame is detected, the controller in the intelligent control box 9 opens the solenoid valves 11-1~11-2 to achieve real-time water spray suppression.

[0043] When working, the precision digital pressure gauge 15 displays the elastic force of the adjustable compression spring 6 measured by the current pressure sensor 19; when the pressure inside the pressure container 25 reaches the opening force of the explosion relief valve body (i.e., the spring pressure cover valve seat 4), the spring pressure cover valve seat 4 is pushed open, and the high-temperature gas, flame and pressure wave inside the pressure container 25 enter the explosion relief shell 1 through the discharge pipe 26, and a part of the flame can be blocked by the corrugated flame arrester 2. At this time, the radial shock wave generated will push the corrugated flame arrester 2 to compress the compression spring 3, and the compression spring 3 plays a radial buffering role; when the flame is detected, the controller in the intelligent control box 9 opens the solenoid valves 11-1~11-2 to achieve real-time water spray suppression. When it is necessary to change the opening force of the spring pressure cover valve seat 4, it is only necessary to turn the spring pressure adjustment rod 14, turning it upward to reduce the opening force, and turning it downward to increase the opening force.

[0044] like Figure 4 The outer wall of the annular water pipe 16 is provided with a plurality of water spray holes along the circumferential direction for installing an atomizing nozzle 18, which can achieve an effective explosion suppression effect.

[0045] For ease of description, the present invention uses spatially relative terms, such as "in", "above", "downward", etc., to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figures. It should be understood that the spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

Claims

1. A flameless discharge device for explosion prevention / suppression dual protection of pressure equipment in petrochemical enterprises, characterized in that: include: A pressure-bearing mechanism, an explosion-relief mechanism, an intelligent fire-extinguishing mechanism, and a discharge pipe (26); the pressure-bearing mechanism is connected to the explosion-relief mechanism via the discharge pipe (26); wherein: The pressure-bearing mechanism comprises: a pressure-bearing container (25), an upper flange cover (20-1) and a lower flange cover (20-2); the upper and lower ends of the pressure-bearing container (25) are sealed by the upper flange cover (20-1) and the lower flange cover (20-2); and the upper flange cover (20-1) is provided with a circular opening for installing a discharge pipe (26); The explosion relief mechanism comprises: an explosion relief housing (1), a corrugated flame arrester (2) and an explosion relief valve body; The explosion relief shell (1) is a cylindrical shell, the outer side of the upper port is provided with an edge and a threaded hole is arranged on the edge, the lower end is provided with an opening connected to the discharge pipe (26), and the corrugated flame arrester (2) is arranged in the middle section inside the explosion relief shell (1); the corrugated flame arrester (2) is in a toroidal structure, and the hollow part thereof is used for installing the explosion relief valve body; Intelligent fire extinguishing mechanism: comprising a water storage tank (8), a compressed gas cylinder (7), a first solenoid valve (11-1), a second solenoid valve (11-2), an intelligent control box (9), a high-precision pressure gauge (10), a liquid level gauge (12), a circular water pipe (16), an atomizing nozzle (18) and a flame detector (13); The explosion relief valve body comprises: an explosion relief valve body cover (21), a reducing flange (24), a spring pressure cover valve seat (4), an adjustable compression spring (6), a spring fixing bolt (27), a spring pressure regulating rod (14), a triangular fixing bracket (17), a pressure sensor (19), a spring pressure plate (28), a balancing pressure plate (29), and a spring pressure regulating rod pressure plate (30); The reducer flange (24) is assembled from a flange plate and two pipes of different diameters; the flange plate has a wider edge, and an annular opening is opened on the edge; the reducer flange (24) is an internal hollow structure; an annular water pipe (16) is installed at the annular opening of the flange plate, and the annular water pipe adopts a double-pipe split design, and an atomizing nozzle is arranged on the annular water pipe (16), and the annular water pipe (16) is connected to the intelligent fire extinguishing mechanism through a pipeline; the explosion relief valve body cover (21) has the same size, annular opening and threaded hole as the flange plate of the reducer flange (24), and the explosion relief valve body cover (21), the reducer flange (24) and the explosion relief housing (1) are fixedly connected by bolts; The annular water pipe (16) in the intelligent fire extinguishing mechanism is installed at the annular opening of the flange of the reducing flange (24), and atomizing nozzles (18) are evenly installed on the water pipe; the annular water pipe (16) is connected to the water storage tank (8) through a pipeline and a second electromagnetic valve (11-2), and the compressed gas cylinder (7) is connected to the water storage tank (8) through a pipeline and a first electromagnetic valve (11-1); a high-precision pressure gauge (10) is installed on the compressed gas cylinder (7), and a liquid level gauge (12) is provided on the water storage tank (8); the flame detector (13) is installed on the outer wall of the reducing flange (24), and the flame detector (13), the first electromagnetic valve (11-1), and the second electromagnetic valve (11-2) are all connected to the intelligent control box (9). When a flame is detected, the controller in the intelligent control box (9) opens the first electromagnetic valve (11-1) and the second electromagnetic valve (11-2) to achieve real-time water spray suppression.

2. The flameless discharge device for explosion prevention / suppression dual protection of pressure equipment in petrochemical enterprises according to claim 1 is characterized in that: A spring pressure cover valve seat (4) is arranged at the bottom end of the reducing flange (24), and the spring pressure cover valve seat (4) is connected to the adjustable compression spring (6) through a spring fixing bolt (27), and the other end of the adjustable compression spring (6) is connected to the spring pressure plate (28); a pressure sensor (19) is arranged between the spring pressure plate (28) and the balance pressure plate (29); the force-bearing area of ​​the pressure sensor (19) is in surface contact with the spring pressure plate (28); the base bolt of the pressure sensor (19) is installed on the balance pressure plate (29); the spring pressure cover valve seat (4) is a cylindrical structure, and the spring pressure plate (28) and the balance pressure plate (29) are both circular; the outer diameter of the spring pressure cover valve seat (4), the diameter of the spring pressure plate (28) and the balance pressure plate (29) are all the same as the inner diameter of the small pipe of the reducing flange (24), and can move up and down in the small pipe.

3. The flameless discharge device for explosion prevention / suppression dual protection of pressure equipment in petrochemical enterprises according to claim 1 is characterized by: The spring pressure regulating rod pressure plate (30) is circular, and its diameter is the same as the inner diameter of the large pipe of the reducing flange (24); and it is fixed to the bottom end of the large pipe of the reducing flange (24) by screws; a threaded hole is opened at the center of the spring pressure regulating rod pressure plate (30), and the spring pressure regulating rod (14) passes through the threaded hole and is threadedly connected to the spring pressure regulating rod pressure plate (30); a triangular fixing bracket (17) is arranged at the bottom of the spring pressure regulating rod (14), and each bracket angle of the triangular fixing bracket (17) is 120 degrees, and the three bracket foot bolts of the triangular fixing bracket (17) are fixedly connected to the balance pressure plate (29).

4. According to claim 1, a flameless discharge device for explosion prevention / suppression dual protection of pressure equipment in petrochemical enterprises is characterized by: The pressure sensor (19) is connected to the precision digital pressure gauge (15), and the compression degree of the adjustable compression spring (6) is adjusted by manually turning the spring pressure adjustment rod (14) downward. The precision digital pressure gauge (15) displays the elastic force of the adjustable compression spring (6) in real time. By adjusting the compression degree of the adjustable compression spring (6), the explosion relief pressure is adjusted, that is, the opening force of the spring pressure cover valve seat (4) is adjusted.

5. According to claim 1, a flameless discharge device for explosion prevention / suppression dual protection of pressure equipment in petrochemical enterprises is characterized by: The flange of the discharge pipe (26) is machined with a groove, and the ceramic fiber sealing gasket (5) is installed in the groove. The spring-loaded valve seat (4) is tightly pressed against the outlet flange groove of the pressure container (25) under the elastic force of the adjustable compression spring (6). The ceramic fiber sealing gasket (5) is installed on the groove to ensure effective sealing of the two after pressing.

6. The flameless discharge device for explosion prevention / suppression dual protection of pressure equipment in petrochemical enterprises according to claim 1 is characterized by: The inner wall of the explosion relief shell (1) and the outer wall of the reducing flange (24) are also provided with a front pressing gasket (23) and a rear pressing gasket (22); the upper and lower ends of the corrugated flame arrester (2) are clamped and fixed by the front pressing gasket (23) and the rear pressing gasket (22), respectively, and a groove is processed on the front pressing gasket (23), and the pressing spring (3) is installed in the groove, so that the corrugated flame arrester (2) is fixed and pressed, and the pressing spring (3) plays a radial buffering role.

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