A high-energy cutting gas storage tank

Abstract

The present invention discloses a high-energy cutting gas storage tank, which relates to the technical field of pressure vessels and comprises: a fixing frame, the top of which is fixedly connected to the gas tank, an annular groove being provided on the inner side of the gas tank, a liquid nitrogen pipe and a cold air pipe being installed on the inner side of the annular groove, and the liquid nitrogen pipe and the cold air pipe respectively pass through the outside of the gas tank; the present invention provides a pre-cooling mechanism to perform gradient cooling on the inner side of the gas tank, thereby avoiding the sudden temperature shock of traditional rapid cooling, significantly reducing thermal stress damage, and reducing the incidence of microcracks; at the same time, since the liquid nitrogen pipe and the cold air pipe are spirally distributed along the inner wall of the annular groove, the contact area between the cooling gas and the liquid nitrogen and the tank wall is increased, thereby improving the cooling efficiency of the device; at the same time, when the gas and liquid flow in the spiral pipe, centrifugal force is generated, which triggers a turbulent effect, improves the convective heat transfer coefficient, and further improves the pre-cooling effect of the device.

Description

Technical Field

[0001] The invention relates to the technical field of pressure vessels, in particular to a high-energy cutting gas storage tank. Background Art

[0002] As a type of high-efficiency fuel gas specially designed for metal cutting processes, high-energy cutting gas is designed to perfectly replace traditional cutting fuels such as acetylene gas. High-energy cutting gas has a wide range of applicability. Whether it is low-carbon steel, stainless steel, cast iron or other metal materials, it can easily handle them. Moreover, its cutting thickness range spans a wide range, from thin plates of a few millimeters to thick plates of hundreds of millimeters, it can achieve precise cutting, meeting the diverse cutting requirements of different industries and different needs. However, high-energy cutting gases (such as propane, propylene, hydrogen-oxygen mixtures, etc.) usually need to be stored under high pressure to increase the gas storage capacity per unit volume to meet the needs of long-term, high-flow cutting operations. Ordinary gas storage tanks cannot withstand such high pressures, which may cause the tank to rupture, leak or even explode. Therefore, special equipment is required to store them;

[0003] Existing high-energy cutting gas storage tanks generally need to be pre-cooled before gas filling or after maintenance. The existing pre-cooling method generally uses external liquid nitrogen natural convection cooling, which is less efficient for pre-cooling high-energy cutting gas storage tanks. In addition, due to the large temperature difference between the external liquid nitrogen and the tank body, thermal stress is easily generated on the welding parts of the tank body, causing the welding parts of the tank body to rupture. For this reason, we have designed a high-energy cutting gas storage tank to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-energy cutting gas storage tank to solve the problem that the efficiency of pre-cooling a high-energy cutting gas storage tank by natural convection cooling of external liquid nitrogen is low, and due to the large temperature difference between the external liquid nitrogen and the tank body, thermal stress is easily generated, resulting in tank rupture.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a high-energy cutting gas storage tank, comprising: a fixing frame, a gas tank is fixedly connected to the top of the fixing frame, an annular groove is opened on the inner side of the gas tank, a liquid nitrogen pipe and a cold air pipe are installed on the inner side of the annular groove, and the liquid nitrogen pipe and the cold air pipe respectively pass through the outside of the gas tank, and a pre-cooling mechanism, a channel opening mechanism and a rotating mechanism are provided on the inner side of the gas tank; the pre-cooling mechanism includes a plurality of liquid nitrogen nozzles installed on the outer wall of the liquid nitrogen pipe, a plurality of nozzle seats are installed on the outer wall of the cold air pipe, an exhaust pipe is installed on the inner side of the gas tank, and the exhaust pipe is communicated with the annular groove.

[0006] As a further solution of the present invention: the liquid nitrogen pipe and the cold air pipe are both configured to be spiral, and the liquid nitrogen pipe and the cold air pipe are distributed in a spiral along the inner wall of the annular groove.

[0007] As a further solution of the present invention: the channel opening mechanism includes four fixed rods fixedly connected to the inner side of the annular groove, the inner side of the four fixed rods is provided with a first limiting sliding groove, the inner side of the first limiting sliding groove is slidably connected with a sliding plate, two first connecting strips are provided at the bottom of the fixed rod, a plurality of second connecting plates are fixedly connected between the two first connecting strips, one side of the plurality of second connecting plates is fixedly connected to a first sealing plate, the top of the sliding plate is fixedly connected to a first rectangular plate, and one side of the first rectangular plate is fixedly connected to one of the first connecting strips.

[0008] As a further solution of the present invention: the channel opening mechanism also includes a mounting groove provided on the inner side of the gas storage tank, a hydraulic cylinder is installed on the inner side of the mounting groove, the output end of the hydraulic cylinder passes through the inner side of the annular groove and is fixedly connected to a first connecting column, one side of the first connecting column is fixedly connected to an annular plate, a first connecting plate is fixedly connected between the two first connecting strips, one end of the first connecting plate is fixedly connected to a second connecting column, and one end of the second connecting column is fixedly connected to the annular plate.

[0009] As a further solution of the present invention: the rotating mechanism includes a plurality of fixed bars fixedly connected to one side of the fixed rod, one side of each of the fixed bars is fixedly connected to a mounting frame, the inner side of each mounting frame is rotatably connected to a rotating rod, the rotating rod passes through the outside of the mounting frame and is fixedly connected to the second rectangular plate, one side of the second rectangular plate is fixedly connected to a fixed column, one end of the fixed column is fixedly connected to the nozzle port, the bottom of each nozzle seat is fixedly connected to a hose, and one side of each hose is fixedly connected to the nozzle port.

[0010] As a further solution of the present invention: the rotating mechanism also includes a second connecting strip fixedly connected to the top of the annular plate, the top of the second connecting strip is fixedly connected to a third connecting plate, and the third connecting plate is slidably connected to multiple mounting frames, one end of the rotating rod is fixedly connected to a spur gear, one side of the third connecting plate is provided with multiple sections of teeth, each section of teeth is engaged with one of the spur gears, and one side of the mounting frame is provided with an opening reduction component.

[0011] As a further solution of the present invention: the opening reduction component includes a limit plate fixedly connected to the bottom of the fixed rod, the outer wall of the nozzle mouth is fixedly connected to the fixed plate, a sliding block is provided on one side of the fixed plate, one end of the sliding block is fixedly connected to a second sealing plate, and a circulation groove is provided on the inner side of the second sealing plate.

[0012] As a further solution of the present invention: the opening reduction component also includes a second limiting groove opened on the inner side of the fixed plate, the sliding block is slidably connected to the inner side of the second limiting groove, and a return spring is installed between the sliding block and the inner side of the second limiting groove.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. By setting up a pre-cooling mechanism, the inner side of the gas storage tank is gradually cooled, thereby avoiding the sudden temperature shock of traditional rapid cooling, significantly reducing thermal stress damage, and reducing the incidence of microcracks. At the same time, since the liquid nitrogen pipe and the cold air pipe are spirally distributed along the inner wall of the annular groove, the contact area between the cooling gas and liquid nitrogen and the tank wall is increased, thereby improving the cooling efficiency of the device. At the same time, when the gas and liquid flow in the spiral pipe, centrifugal force is generated, which triggers a turbulent effect, increases the convective heat transfer coefficient, and further improves the pre-cooling effect of the device;

[0015] 2. By providing a channel opening mechanism, the first sealing plate moves toward the second connecting plate, thereby opening the opening of the liquid nitrogen nozzle. This allows workers to pour -196°C liquid nitrogen into the inner side of the liquid nitrogen pipe, which can flow into the inner side of the annular groove, thereby cooling the inner side of the gas storage tank. In the initial pre-cooling stage, the liquid nitrogen nozzle is closed to prevent the gas in the cold gas pipe from communicating with the liquid nitrogen passage, avoiding waste of low-temperature gas or interference with the subsequent liquid nitrogen injection, thereby improving the overall practicality of the device.

[0016] 3. By setting up a rotating mechanism, one side of the second sealing plate partially shields the nozzle opening, thereby reducing the flow rate of the nozzle opening into the inner side of the annular groove, thereby achieving a rapid transition from a large flow of cryogenic gas to a small flow of cryogenic gas, forming a stable circulation in the tank, thereby achieving precise temperature control and reducing the waste of cryogenic gas, thereby improving the overall practicality of the device;

[0017] 4. By arranging the cooperation of parts such as the annular plate, the gas inside the nozzle mouth will be ejected upward in the direction of 70°, thereby enhancing the impact cooling of the top of the tank body. When one side of the second sealing plate partially shields the nozzle mouth, the output end of the mounting groove drives the first connecting column to move toward the direction of the annular plate while driving the fixed column to rotate, so that the nozzle mouth is rotated to a direction of 10° with the horizontal direction, thereby forming a low flow + small angle to fill the temperature dead corner and achieve precise temperature uniformity. At the same time, after the liquid nitrogen is sprayed in, the small-angle airflow penetrates along the wall into the dead corner, carrying liquid nitrogen droplets. When the liquid nitrogen vaporizes in the dead corner, a local negative pressure is formed, which attracts the surrounding hot air to flow in, forming "self-circulating refrigeration", which further improves the pre-cooling effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 is a cross-sectional view of the present invention;

[0020] Figure 3 Exploded view of the gas storage tank, cold air pipe and liquid nitrogen pipe of the present invention;

[0021] Figure 4 It is a schematic diagram of the partial structure of the pre-cooling mechanism of the present invention;

[0022] Figure 5 Schematic diagram of the annular plate structure of the present invention;

[0023] Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle;

[0024] Figure 7 It is a schematic structural diagram of the rotating mechanism of the present invention;

[0025] Figure 8 For the present invention Figure 7 Enlarged view of point B in the middle;

[0026] Figure 9 This is a schematic diagram of the structure of the opening reduction component of the present invention;

[0027] Figure 10 This is a schematic structural diagram of the second sealing plate of the present invention.

[0028] In the figure: 1. fixing frame; 2. gas storage tank; 3. liquid nitrogen pipe; 4. cold air pipe; 5. exhaust pipe; 6. annular groove; 7. fixing rod; 8. mounting groove; 9. hydraulic cylinder; 10. first connecting column; 11. annular plate; 12. second connecting column; 13. first connecting plate; 14. first connecting strip; 15. second connecting plate; 16. first sealing plate; 17. return spring; 18. first limiting slide; 19. first rectangular plate; 20. sliding plate; 21. nozzle seat; 22. liquid nitrogen nozzle; 23. hose; 24. nozzle port; 25. fixing strip; 26. mounting frame; 27. rotating rod; 28. second rectangular plate; 29. ​​fixing column; 30. spur gear; 31. second limiting slide; 32. second connecting strip; 33. limiting plate; 34. fixing plate; 35. sliding block; 36. second sealing plate; 37. third connecting plate. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected, detachably connected, or connected in one piece; they can be mechanically connected or electrically connected; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internal connections between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following describes an embodiment of the present invention based on its overall structure.

[0031] See also Figures 1 to 10 , this embodiment provides a high-energy cutting gas storage tank, comprising: a fixed frame 1, a gas storage tank 2 is fixedly connected to the top of the fixed frame 1, an annular groove 6 is opened on the inner side of the gas storage tank 2, a liquid nitrogen pipe 3 and a cold air pipe 4 are installed on the inner side of the annular groove 6, and the liquid nitrogen pipe 3 and the cold air pipe 4 respectively pass through the outside of the gas storage tank 2, and a pre-cooling mechanism, a channel opening mechanism and a rotating mechanism are provided on the inner side of the gas storage tank 2; the pre-cooling mechanism includes a plurality of liquid nitrogen nozzles 22 installed on the outer wall of the liquid nitrogen pipe 3, a plurality of nozzle seats 21 are installed on the outer wall of the cold air pipe 4, an exhaust pipe 5 is installed on the inner side of the gas storage tank 2, and the exhaust pipe 5 is communicated with the annular groove 6; the liquid nitrogen pipe 3 and the cold air pipe 4 are both arranged in a spiral shape, and the liquid nitrogen pipe 3 and the cold air pipe 4 are spirally distributed along the inner wall of the annular groove 6;

[0032] The cooling pipe 4 is connected to the external cooling pipe, and the liquid nitrogen pipe 3 is connected to the external liquid nitrogen pipe. When the staff needs to pre-cool the gas storage tank 2, the staff first fills the cooling pipe 4 with cooling air, and the cooling air gradually cools from room temperature to -50°C, so that the gas storage tank 2 is gradually cooled. At this time, the cooling air flows through the inner side of the cooling pipe 4 and is ejected by multiple nozzles 24, thereby blowing the cooling air into the inner side of the annular groove 6, thereby cooling the inner side of the gas storage tank 2. After a period of time, the gas is gradually cooled to -100°C inside the cooling pipe 4. After a period of time, Liquid nitrogen at -196°C is gradually poured into the inner side of the liquid nitrogen pipe 3 to gradually cool the inner side of the gas storage tank 2, thereby avoiding the sudden temperature shock of traditional rapid cooling, significantly reducing thermal stress damage, and reducing the incidence of microcracks. At the same time, since the liquid nitrogen pipe 3 and the cold air pipe 4 are spirally distributed along the inner wall of the annular groove 6, the contact area between the cooling gas and liquid nitrogen and the tank wall is increased, thereby improving the cooling efficiency of the device. At the same time, when the gas and liquid flow in the spiral pipe, centrifugal force is generated, which triggers a turbulent effect, increases the convective heat transfer coefficient, and further improves the pre-cooling effect of the device.

[0033] See also Figures 2 to 7 , this embodiment provides a high-energy cutting gas storage tank, the channel opening mechanism includes four fixed rods 7 fixedly connected to the inner side of the annular groove 6, the inner sides of the four fixed rods 7 are each provided with a first limiting sliding groove 18, the inner side of the first limiting sliding groove 18 is slidably connected with a sliding plate 20, the bottom of the fixed rod 7 is provided with two first connecting strips 14, a plurality of second connecting plates 15 are fixedly connected between the two first connecting strips 14, one side of the plurality of second connecting plates 15 is fixedly connected to a first sealing plate 16, the top of the sliding plate 20 is fixedly connected to a first rectangular plate 19, the first One side of the rectangular plate 19 is fixedly connected to a first connecting bar 14. The channel opening mechanism also includes a mounting groove 8 provided on the inner side of the gas storage tank 2. A hydraulic cylinder 9 is installed on the inner side of the mounting groove 8. The output end of the hydraulic cylinder 9 passes through the inner side of the annular groove 6 and is fixedly connected to a first connecting column 10. One side of the first connecting column 10 is fixedly connected to an annular plate 11. A first connecting plate 13 is fixedly connected between the two first connecting bars 14. One end of the first connecting plate 13 is fixedly connected to a second connecting column 12. One end of the second connecting column 12 is fixedly connected to the annular plate 11.

[0034] The hydraulic cylinder 9 is controlled by a PLC controller, which can control the intermittent start of the hydraulic cylinder 9. After a period of time, when -100°C gas is poured into the inner side of the cold air pipe 4, the PLC controller controls the hydraulic cylinder 9 to start, so that the output end of the hydraulic cylinder 9 drives the first connecting column 10 to move in the direction of the annular plate 11, thereby driving the second connecting bar 32 to move in the direction of the liquid nitrogen nozzle 22, thereby causing the first sealing plate 16 to move in the direction of the second connecting plate 15, thereby opening the opening of the liquid nitrogen nozzle 22, so that the staff can pour -196°C liquid nitrogen into the inner side of the liquid nitrogen pipe 3, which can flow into the inner side of the annular groove 6, thereby cooling the inner side of the gas storage tank 2. Therefore, in the initial pre-cooling stage, the liquid nitrogen nozzle 22 is closed to prevent the gas in the cold air pipe 4 from communicating with the liquid nitrogen passage, thereby avoiding waste of low-temperature gas or interference with the subsequent liquid nitrogen injection, thereby improving the overall practicality of the device.

[0035] See also Figures 4 to 10 , this embodiment provides a high-energy cutting gas storage tank, the rotating mechanism includes a plurality of fixing bars 25 fixedly connected to one side of the fixing rod 7, one side of the plurality of fixing bars 25 is fixedly connected to a mounting frame 26, the inner side of each mounting frame 26 is rotatably connected to a rotating rod 27, the rotating rod 27 passes through the outside of the mounting frame 26 and is fixedly connected to a second rectangular plate 28, one side of the second rectangular plate 28 is fixedly connected to a fixing column 29, one end of the fixing column 29 is fixedly connected to a nozzle port 24, the bottom of each nozzle seat 21 is fixedly connected to a hose 23, one side of each hose 23 is fixedly connected to the nozzle port 24, the rotating mechanism also includes a second connecting bar 32 fixedly connected to the top of the annular plate 11, the top of the second connecting bar 32 is fixedly connected to a third connecting plate 37, and the third connecting plate 37 is fixedly connected to the nozzle port 24. Multiple mounting frames 26 are slidably connected, one end of the rotating rod 27 is fixedly connected to a spur gear 30, one side of the third connecting plate 37 is provided with multiple segments of teeth, each segment of teeth is meshed with a spur gear 30, one side of the mounting frame 26 is provided with an opening reduction component, the opening reduction component includes a limiting plate 33 fixedly connected to the bottom of the fixing rod 7, the outer wall of the nozzle port 24 is fixedly connected to a fixing plate 34, one side of the fixing plate 34 is provided with a sliding block 35, one end of the sliding block 35 is fixedly connected to a second sealing plate 36, the inner side of the second sealing plate 36 is provided with a circulation groove, the opening reduction component also includes a second limiting slide 31 provided on the inner side of the fixing plate 34, the sliding block 35 is slidably connected to the inner side of the second limiting slide 31, and a return spring 17 is installed between the sliding block 35 and the inner side of the second limiting slide 31;

[0036] When the output end of the mounting groove 8 drives the first connecting post 10 to move in the direction of the annular plate 11, it drives the third connecting plate 37 to move in the direction away from the mounting groove 8, thereby driving the rotating rod 27 to rotate, thereby driving the fixing post 29 to rotate, so that the nozzle mouth 24 rotates. At this time, when the second sealing plate 36 rotates to contact the limit plate 33, under the action of the limit plate 33, since the nozzle mouth 24 continues to rotate at this time, the second sealing plate 36 is pushed to slide relatively along the second limit sliding groove 31, so that one side of the second sealing plate 36 partially blocks the nozzle mouth 24, thereby reducing the flow rate of the nozzle mouth 24 blowing into the inner side of the annular groove 6, thereby realizing a rapid conversion of a large flow of low-temperature gas to a small flow of low-temperature gas, forming a stable circulation in the tank, thereby achieving precise temperature control, while reducing the waste of low-temperature gas, thereby improving the overall practicality of the device;

[0037] In the initial stage, the nozzle port 24 is at 70° to the horizontal direction. At this time, when -100°C gas is injected into the inner side of the cold air pipe 4, the gas from the inner side of the nozzle port 24 will be ejected upward in the direction of 70°, thereby enhancing the impact cooling of the top of the tank body. When one side of the second sealing plate 36 partially blocks the nozzle port 24, the output end of the mounting groove 8 drives the first connecting column 10 to move toward the direction of the annular plate 11 while driving the fixed column 29 to rotate, so that the nozzle port 24 is rotated to a direction of 10° to the horizontal direction, thereby forming a low flow + small angle to fill the temperature dead corner and achieve precise temperature uniformity. At the same time, after the liquid nitrogen is sprayed in, the small angle airflow penetrates into the dead corner along the wall, carrying liquid nitrogen droplets. When the liquid nitrogen vaporizes in the dead corner, a local negative pressure is formed, which attracts the surrounding hot air to flow in, forming "self-circulating refrigeration", which further improves the pre-cooling effect of the device.

[0038] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A high-energy cutting gas storage tank, characterized in that: include: A fixing frame (1), the top of the fixing frame (1) is fixedly connected to a gas storage tank (2), an annular groove (6) is provided on the inner side of the gas storage tank (2), a liquid nitrogen pipe (3) and a cold air pipe (4) are installed on the inner side of the annular groove (6), and the liquid nitrogen pipe (3) and the cold air pipe (4) respectively penetrate the outside of the gas storage tank (2), and a pre-cooling mechanism, a channel opening mechanism and a rotating mechanism are provided on the inner side of the gas storage tank (2); The pre-cooling mechanism comprises a plurality of liquid nitrogen nozzles (22) mounted on the outer wall of the liquid nitrogen pipe (3), a plurality of nozzle seats (21) are mounted on the outer wall of the cold air pipe (4), an exhaust pipe (5) is mounted on the inner side of the gas storage tank (2), and the exhaust pipe (5) is communicated with the annular groove (6); The channel opening mechanism includes four fixed rods (7) fixedly connected to the inner side of the annular groove (6), the inner side of each of the four fixed rods (7) is provided with a first limiting sliding groove (18), the inner side of the first limiting sliding groove (18) is slidably connected to a sliding plate (20), two first connecting strips (14) are provided at the bottom of the fixed rod (7), a plurality of second connecting plates (15) are fixedly connected between the two first connecting strips (14), one side of each of the plurality of second connecting plates (15) is fixedly connected to a first sealing plate (16), the top of the sliding plate (20) is fixedly connected to a first rectangular plate (19), and one side of the first rectangular plate (19) is fixedly connected to one of the first connecting strips (14); The channel opening mechanism also includes a mounting groove (8) provided on the inner side of the gas storage tank (2), a hydraulic cylinder (9) being installed on the inner side of the mounting groove (8), an output end of the hydraulic cylinder (9) passing through the inner side of the annular groove (6) and being fixedly connected to a first connecting column (10), one side of the first connecting column (10) being fixedly connected to an annular plate (11), a first connecting plate (13) being fixedly connected between the two first connecting bars (14), one end of the first connecting plate (13) being fixedly connected to a second connecting column (12), and one end of the second connecting column (12) being fixedly connected to the annular plate (11); The rotating mechanism includes a plurality of fixing bars (25) fixedly connected to one side of the fixing rod (7), one side of each of the fixing bars (25) is fixedly connected to a mounting frame (26), the inner side of each mounting frame (26) is rotatably connected to a rotating rod (27), the rotating rod (27) passes through the outside of the mounting frame (26) and is fixedly connected to a second rectangular plate (28), one side of the second rectangular plate (28) is fixedly connected to a fixing column (29), one end of the fixing column (29) is fixedly connected to a nozzle port (24), the bottom of each nozzle seat (21) is fixedly connected to a hose (23), and one side of each hose (23) is fixedly connected to the nozzle port (24); The rotating mechanism further comprises a second connecting bar (32) fixedly connected to the top of the annular plate (11), a third connecting plate (37) fixedly connected to the top of the second connecting bar (32), and the third connecting plate (37) is slidably connected to a plurality of mounting frames (26), one end of the rotating rod (27) is fixedly connected to a spur gear (30), a side of the third connecting plate (37) is provided with a plurality of segments of latching teeth, each segment of latching teeth is engaged with one of the spur gears (30), and an opening reduction component is provided on one side of the mounting frame (26).

2. A high-energy cutting gas storage tank according to claim 1, characterized in that: The liquid nitrogen pipe (3) and the cold air pipe (4) are both arranged in a spiral shape, and the liquid nitrogen pipe (3) and the cold air pipe (4) are distributed in a spiral manner along the inner wall of the annular groove (6).

3. A high-energy cutting gas storage tank according to claim 1, characterized in that: The opening reduction assembly includes a limiting plate (33) fixedly connected to the bottom of the fixing rod (7), the outer wall of the nozzle opening (24) is fixedly connected to the fixing plate (34), a sliding block (35) is provided on one side of the fixing plate (34), and one end of the sliding block (35) is fixedly connected to a second sealing plate (36), and a flow groove is provided on the inner side of the second sealing plate (36).

4. A high-energy cutting gas storage tank according to claim 3, characterized in that: The opening reduction assembly further includes a second limiting slide groove (31) provided on the inner side of the fixed plate (34), the sliding block (35) is slidably connected to the inner side of the second limiting slide groove (31), and a return spring (17) is installed between the sliding block (35) and the inner side of the second limiting slide groove (31).

Images