A heating device for special gas cabinet cylinders

Abstract

The invention discloses a heating device for a steel cylinder of a special gas cabinet, and relates to the technical field of special gas cabinets. The device utilizes the synergistic effect of a heating coil and an auxiliary heating rod to achieve uniform heating of the gas in the steel cylinder. At the same time, the provision of a heat preservation pad ensures the maintenance of the temperature of the steel cylinder. A linkage mechanism composed of an air outlet pipe, a floating valve plate, a driving rod, a lifting rod, a traction rod and a movable connecting rod can automatically adjust the heating amplitude of the heating coil according to the temperature in the steel cylinder. The heating temperature of the coil is affected by the number of coil windings, the coil diameter and the current. When the current and the coil diameter are fixed, the number of coil windings is a variable that can be used to adjust the heating temperature. When the temperature of the special gas output gradually increases, it means that the gas pressure in the bottle gradually increases. The change in gas pressure will drive the linkage mechanism to dynamically change synchronously and adaptively stretch the heating coil upward, so that the number of coil windings outside the steel cylinder is reduced, thereby reducing the heating temperature of the steel cylinder.

Description

Technical Field

[0001] The invention relates to the technical field of special gas cabinets, and in particular to a heating device for a steel cylinder of a special gas cabinet. Background Art

[0002] Heating equipment for special gas cabinet cylinders is a device specially designed to increase the temperature of cylinders in special gas cabinets. Special gas cabinets are usually used to store and distribute special gases (such as inert gases and reactive gases used in semiconductor manufacturing), which can only maintain optimal performance and stability at specific temperatures.

[0003] For example, a heating device for special gas cabinet cylinders with publication number CN117537489A and authorization announcement date 2024-02-09 can better heat cylinders with different amounts of residual gas, so that the temperature of the special gas flowing out of the cylinder is relatively stable.

[0004] However, if the device fails to accurately control the heating temperature according to the gas pressure released by the special gas in the cylinder or the heating work is not turned off in time during the heating process, once the temperature is too high, it may not only cause the temperature of the special gas in the cylinder to rise abnormally, but also cause the cylinder body to bear excessive pressure due to the thermal expansion and contraction effect, thus posing a serious safety hazard of cylinder rupture;

[0005] In addition, in the above-mentioned prior art, the installation and removal method of the steel cylinder adopts a ring structure design composed of an outer arc sleeve and an inner arc sleeve. This design allows the inner arc sleeve to slide smoothly into the outer arc sleeve, thereby simplifying the operation process of installing the steel cylinder into the heating ring, which brings great convenience to the user. However, although this installation method improves the convenience of operation, it also sacrifices the uniformity of heating to a certain extent. Specifically, due to the limitation of the ring structure, the heating ring may not be able to completely fit the outer surface of the steel cylinder, resulting in insufficient heating coverage, which in turn makes the gas inside the steel cylinder unevenly heated during the heating process. This uneven heating may affect the temperature stability and supply quality of the special gas;

[0006] At the same time, the heat conversion efficiency of this heating method is not high. The cylinder is heated by a heating ring, and then the cylinder heats the special gas in the cylinder through heat conduction. This is a conduction heating from the outside to the inside, which has low efficiency and high heat loss.

[0007] In view of the above problems, the present invention proposes a high-efficiency heating device for special gas cabinet cylinders, which can adaptively adjust the heating temperature of the cylinders and automatically disconnect the heating when the temperature (gas pressure) is abnormal. Summary of the invention

[0008] The technical solution of the present invention aims at the technical problem that the existing technical solutions are too single, and provides a solution that is significantly different from the existing technologies. Specifically, the purpose of the present invention is to provide a heating device for special gas cabinet cylinders, so as to solve the problem proposed in the above background technology that during the heating process, if the heating temperature is not accurately controlled or the heating work is disconnected in time, once the temperature is too high, it may not only cause the temperature of the special gas in the cylinder to rise abnormally, but also cause the cylinder body to be under excessive pressure due to the thermal expansion and contraction effect, thereby posing a serious safety hazard of cylinder rupture.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a heating device for a special gas cabinet cylinder, comprising a special gas cabinet body and a cylinder, and also comprising a lifting structure for supporting the cylinder and a heating coil wound around the outside of the cylinder, a pressure monitoring linkage mechanism for following changes in the internal air pressure of the cylinder and adaptively adjusting the number of turns of the heating coil is installed between the upper end of the heating coil and the cylinder, and a cut-off component for judging abnormally high pressure in the cylinder and automatically cutting off the heat source is provided between the upper end of the cylinder and the closed loop of the heating coil.

[0010] Preferably, the lifting structure includes a box door that rotates on the special gas cabinet, a bottom plate installed at the bottom end of the inner wall of the special gas cabinet, a placement plate arranged on the left side of the inner wall of the special gas cabinet, and an insulation pad that is sleeved on the outside of the steel cylinder for the heating coil to assist in heating the gas in the steel cylinder. A slot for lifting the lifting structure is opened on the right side of the top of the placement plate, and a fixing column is fixedly connected to the left side of the top of the placement plate. A power terminal is bolted to the fixing column, and the top and bottom of the power terminal are electrically connected to connecting wires. A steel cylinder is placed on the top of the lifting structure, and the connecting wire at the bottom of the power terminal is electrically connected to the heating coil.

[0011] Preferably, the air pressure monitoring linkage mechanism includes a sleeve arranged on the gas outlet of the cylinder, a partition fixedly connected to the inner wall of the top of the special gas cabinet, a driving rod slidably arranged in the sleeve, and a lifting rod with the other end of the driving rod exposed at the bottom of the partition and slidably connected to the air outlet cavity, the partition and the special gas cabinet form an air outlet cavity, the end of the lifting rod is rotatably provided with a rotating shaft rod, and one end of the rotating shaft rod is fixedly connected to the inner wall of the special gas cabinet, the top of the partition is fixedly connected with a limiting block, the center of the limiting block is provided with a through groove, and the through groove is sleeved on the outer wall of the driving rod for the driving rod to move vertically, the other end of the lifting rod is slidably provided with a traction rod, the outer wall of the traction rod is provided with a movable groove, the bottom of the traction rod is fixedly connected with a connecting head, the connecting head is fixedly connected to the end of the heating coil, the driving rod is used to slide down and drive the lifting rod to tilt and lift so that the traction rod drives the heating coil to lift and deform through the connecting head.

[0012] Preferably, the current cut-off assembly includes a movable connecting rod slidably arranged on a movable groove, a movable power connection block fixedly connected to the other end of the movable connecting rod, and an insulating sliding rod arranged through the center of the movable power connection block. The movable power connection block is electrically connected to the heating coil through the movable connecting rod and the traction rod. A fixed power connection block is also fixed on the insulating sliding rod. The fixed power connection block is electrically connected to the movable power connection block in a movable plug-in manner.

[0013] Preferably, one end of the fixed power block is electrically connected to the power terminal through a connecting wire, one end of the insulating sliding rod is sleeved with a connecting rod, and the other end of the connecting rod is "L"-shaped and fixedly connected to the outer wall of the power terminal;

[0014] The power terminal is electrically connected to the connecting line, the fixed power connection block and the movable power connection block to form a closed loop.

[0015] Preferably, the right side of the top of the special gas cabinet is fixedly connected to an outlet pipe, one end of the driving rod placed in the sleeve is fixedly connected to a floating valve plate, a special-shaped groove is opened in the sleeve, and the outer wall of the floating valve plate is in sealing contact with the special-shaped groove.

[0016] Preferably, the floating valve plate is placed directly below the special-shaped groove and fixedly connected to an auxiliary heating rod, one end of the auxiliary heating rod is used to be set in the cylinder to assist the heating coil in heating, the outer wall of the auxiliary heating rod placed in the sleeve is fixedly connected to fixed rods distributed in a circular array, the other end of the fixed rod is fixedly connected to the inner wall of the sleeve, and the spacing gaps generated between each of the fixed rods are for gas circulation.

[0017] Preferably, the base plate is provided with symmetrically distributed support blocks, a cylinder is placed between the support blocks, the end of the cylinder is fixedly connected to an electromagnetic lifting block, a slide rail is fixedly connected to the right side of the top of the base plate, and an electromagnetic trigger is provided at the end of the slide rail, the electromagnetic lifting block is slidably set on the slide rail, and the end of the electromagnetic lifting block performs electromagnetic lifting by contacting the electromagnetic trigger.

[0018] Preferably, a rectangular array of telescopic rods is provided on the top of the base plate, a lifting plate is fixedly connected to the top of the telescopic rods, and a placement groove for placing the cylinder is opened on the top of the lifting plate.

[0019] Preferably, the bottom of the jacking plate is fixedly connected with a symmetrically distributed connecting plate, the outer wall of the connecting plate is provided with an inclined sliding groove, a sliding bolt is slidably arranged in the sliding groove, and the sliding bolt is connected to the outer wall of the electromagnetic jacking block.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The synergistic effect of the heating coil and the auxiliary heating rod is used to achieve uniform heating of the gas in the cylinder. At the same time, the setting of the insulation pad ensures the maintenance of the temperature of the cylinder. The linkage mechanism composed of the gas outlet pipe, floating valve plate, driving rod, lifting rod, traction rod and movable connecting rod can automatically adjust the heating amplitude of the heating coil according to the temperature in the cylinder. Specifically, the heating temperature of the coil is affected by the number of coil windings, coil diameter and current. When the current and coil diameter are fixed, the number of coil windings is a variable that can be used to adjust the heating temperature. When the temperature of the special gas output gradually increases, it means that the gas pressure in the bottle gradually increases. The change in gas pressure will drive the linkage mechanism to change dynamically and stretch the heating coil upward adaptively, so that the number of coil windings outside the cylinder is reduced, thereby reducing the heating temperature of the cylinder.

[0022] 2. When the dynamic temperature adjustment is not enough to curb the abnormal increase of the gas pressure in the cylinder, the change amount of the linkage mechanism reaches the maximum value, and the closed loop of the electromagnetic heating coil is controlled to be disconnected, and the current is directly cut off to prevent the temperature and gas pressure from getting out of control, thereby avoiding the safety hazards caused by excessive temperature and realizing intelligent protection of the equipment. When the gas pressure and temperature of the cylinder are restored, the electromagnetic heating coil forms a closed loop again for normal dynamic heating to ensure the stable output of special gas;

[0023] 3. By setting up the lifting structure, the lifting operation of the cylinder can be easily realized. When the cylinder needs to be replaced, the cylinder can be automatically lifted out of the heating coil or placed back in the heating coil by cooperating with the electromagnetic trigger and the electromagnetic lifting block. The cylinder can be easily taken out and replaced with a new one, which greatly improves the convenience and efficiency of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 It is a schematic diagram of the overall internal structure of the present invention.

[0026] Figure 3 This is a state diagram of the overall structural heating component adjustment of the present invention.

[0027] Figure 4 It is a schematic diagram of the steel tank lifting structure of the present invention.

[0028] Figure 5 It is a schematic diagram of the steel tank removal state of the present invention.

[0029] Figure 6 It is a three-dimensional cross-sectional view of the structural adjustment tube of the present invention.

[0030] Figure 7 for Figure 2 A partial enlarged schematic diagram of the structure at A.

[0031] Figure 8 for Figure 3 A partial enlarged schematic diagram of the structure at location B.

[0032] In the figure: 1, special gas cabinet; 101, cabinet door; 102, outlet pipe; 2, placement plate; 3, lifting plate; 301, placement slot; 4, cylinder; 5, heating coil; 6, fixing column; 7, bottom plate; 8, support block; 9, cylinder; 10, power terminal; 11, connecting wire; 12, partition; 13, limit block; 14, driving rod; 1401, floating valve plate; 15, casing; 1501, special-shaped slot; 1 502, fixed rod; 16, slide rail; 17, electromagnetic lifting block; 1701, slide bolt; 18, telescopic rod; 19, connecting plate; 1901, slide groove; 20, auxiliary heating rod; 21, traction rod; 2101, movable groove; 2102, connector; 22, connecting rod; 23, insulating slide rod; 24, fixed power connection block; 25, movable power connection block; 26, movable connecting rod; 27, lifting rod; 28, rotating shaft rod. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0034] See also Figures 1 to 8 The present invention provides a technical solution: a heating device for a special gas cabinet cylinder, comprising a special gas cabinet body 1 and a cylinder 4, and also comprising a lifting structure for supporting the cylinder 4 and a heating coil 5 wound around the outside of the cylinder 4, a pressure monitoring linkage mechanism for following the internal air pressure changes of the cylinder 4 and adaptively adjusting the number of turns of the heating coil 5 is installed between the upper end of the heating coil 5 and the cylinder 4, and a cut-off component for judging abnormally high pressure in the cylinder and automatically cutting off the heat source is arranged between the upper end of the cylinder 4 and the closed loop of the heating coil 5.

[0035] In this embodiment, the steel cylinder 4 is first placed on the top of the lifting structure, and then the lifting structure is started. The lifting structure lifts the steel cylinder 4 upward to a position where it can enter the heating coil 5 through hydraulic action. Next, the heating coil 5 is started to produce an electromagnetic heating effect, and cooperates with the air pressure monitoring linkage mechanism to uniformly heat the steel cylinder 4 from the inside to the outside and then from the outside to the inside. The heating temperature of the heating coil 5 is affected by many factors, including the number of winding turns of the coil, the coil diameter, and the current size. When the current and the coil diameter remain constant, the number of winding turns of the coil becomes the key variable for adjusting the heating temperature. As the output temperature of the special gas gradually increases, the air pressure inside the steel cylinder 4 also increases. This air pressure change will drive the air pressure monitoring linkage mechanism to perform synchronous dynamic adjustment, and stretch the heating coil 5 upward, thereby reducing the number of winding turns of the coil outside the steel cylinder 4, and then reducing the heating temperature of the steel cylinder 4. When this dynamic temperature adjustment cannot effectively curb the abnormal increase in the air pressure inside the steel cylinder 4, the change amount of the air pressure monitoring linkage mechanism will reach its maximum value. At this time, the current cut-off component will intervene to control the closed circuit of the heating coil 5 to disconnect and directly cut off the current supply to prevent the temperature and air pressure from getting out of control further. This measure effectively avoids the potential safety hazards caused by excessive temperature and realizes intelligent protection of the equipment. When the air pressure and temperature of the cylinder 4 return to normal levels, the heating coil 5 will form a closed circuit again and continue the normal dynamic heating process to ensure the stable output of the special gas.

[0036] The lifting structure includes a box door 101 rotating on the special gas cabinet 1, a bottom plate 7 assembled at the bottom end of the inner wall of the special gas cabinet 1, a placement plate 2 arranged on the left side of the inner wall of the special gas cabinet 1, and an insulation pad arranged on the outside of the steel cylinder 4 for the heating coil 5 to assist the heating of the gas in the steel cylinder 4. A slot for the lifting structure to be raised and lowered is provided on the right side of the top of the placement plate 2. A fixing column 6 is fixedly connected to the left side of the top of the placement plate 2. A power terminal 10 is bolted to the fixing column 6. The top and bottom of the power terminal 10 are electrically connected to a connecting wire 11. A steel cylinder 4 is placed on the top of the lifting structure, and the connecting wire 11 at the bottom of the power terminal 10 is electrically connected to the heating coil 5.

[0037] In this embodiment, a slot is provided on the top right side of the placement plate 2, and the slot is specially designed for the lifting operation of the lifting structure. At the same time, the outside of the cylinder 4 is wrapped with an insulation pad to ensure that the temperature of the cylinder 4 remains stable. On the top left side of the placement plate 2, a fixing column 6 is installed to stabilize the power terminal 10 (which can be a removable battery or other external output power source). The top and bottom of the power terminal 10 are electrically connected to the heating coil 5 and the current cut-off assembly respectively through the connecting wire 11, thereby constructing a complete and closed circuit system including the heating coil 5, the current cut-off assembly and the power terminal 10.

[0038] The air pressure monitoring linkage mechanism includes a sleeve 15 sleeved on the gas outlet of the cylinder 4, a partition 12 fixedly connected to the inner wall of the top of the special gas cabinet 1, a driving rod 14 slidably arranged in the sleeve 15, and a lifting rod 27 with the other end of the driving rod 14 exposed at the bottom of the partition 12 and slidably connected, and a gas outlet cavity is formed between the partition 12 and the special gas cabinet 1. A rotating shaft 28 is rotatably arranged at the end of the lifting rod 27, and one end of the rotating shaft 28 is fixedly connected to the inner wall of the special gas cabinet 1, and the top of the partition 12 is fixedly connected to the limit block 13, and the limit A through groove is provided at the center of the block 13, and the through groove is sleeved on the outer wall of the driving rod 14 for the driving rod 14 to move vertically. A traction rod 21 is slidably provided at the other end of the lifting rod 27. A movable groove 2101 is provided on the outer wall of the traction rod 21. A connecting head 2102 is fixedly connected to the bottom of the traction rod 21. The connecting head 2102 is fixedly connected to the end of the heating coil 5. The driving rod 14 is used to slide downward to drive the lifting rod 27 to tilt and lift so that the traction rod 21 drives the heating coil 5 to lift and deform upward through the connecting head 2102.

[0039] In this embodiment, when the steel cylinder 4 is heated, the special gas inside it will generate air pressure due to the increase in temperature and enter the sleeve 15 through the air outlet. Subsequently, the driving rod 14 in the sleeve 15 moves upward from the sleeve 15 according to the increase in air pressure. While moving, the other end of the driving rod 14 moves upward and slides to the right side of the lifting rod 27 in the lifting rod 27, thereby driving the lifting rod 27 to rotate upward with the rotating shaft 28 as the axis. While the lifting rod 27 rotates upward, the traction rod 21 slidably connected at the other end is lifted by the lifting rod 27 and moves upward. When the traction rod 21 moves upward, it will drive the heating coil 5 to deform and lift up through the connecting head 2102, thereby reducing the heating amplitude of the steel cylinder 4.

[0040] The current cut-off assembly includes a movable connecting rod 26 slidably arranged on the movable groove 2101, a movable power connection block 25 fixedly connected to the other end of the movable connecting rod 26, and an insulating sliding rod 23 penetrating the center of the movable power connection block 25. The movable power connection block 25 is electrically connected to the heating coil 5 through the movable connecting rod 26 and the traction rod 21. A fixed power connection block 24 is also fixedly mounted on the insulating sliding rod 23, and the fixed power connection block 24 is electrically connected to the movable power connection block 25 in a movable plug-in manner.

[0041] In this embodiment, when the temperature in the cylinder 4 is too high, the gas pressure will be greater, so that the driving rod 14 will be lifted higher. Subsequently, when the traction rod 21 is lifted too high, the movable connecting rod 26 sliding in the movable groove 2101 will contact the bottom of the movable groove 2101. At the same time, the movable connecting rod 26 will rotate, and the other end of the movable connecting rod 26 will drive the movable power connection block 25 to be pulled, so that the movable power connection block 25 slides toward one end of the insulating sliding rod 23. After sliding, the movable power connection block 25 will be disconnected from the fixed power connection block 24, thereby cutting off the power supply of the heating coil 5, realizing intelligent protection of the equipment, and avoiding safety hazards caused by excessive temperature.

[0042] One end of the fixed power block 24 is electrically connected to the power terminal 10 through the connecting wire 11, and one end of the insulating sliding rod 23 is sleeved with a connecting rod 22, and the other end of the connecting rod 22 is "L"-shaped and fixedly connected to the outer wall of the power terminal 10;

[0043] The power terminal 10 is electrically connected to the connection line 11 , the fixed connection block 24 and the movable connection block 25 to form a closed loop.

[0044] In this embodiment, the insulating slide bar 23 is firmly connected to the power terminal 10 via the connecting rod 22, so that the insulating slide bar 23 can stably maintain an inclined state. The top of the power terminal 10 establishes an electrical connection with the fixed power connection block 24 through the connecting wire 11, and the fixed power connection block 24 and the movable power connection block 25 are electrically connected by plugging. Subsequently, the bottom of the power terminal 10 is also connected to the heating coil 5 through the connecting wire 11. The heating coil 5 is further electrically connected to the movable power connection block 25 through the traction rod 21. In this way, the power terminal 10, the connecting wire 11, the fixed power connection block 24, the movable power connection block 25, the heating coil 5 and the traction rod 21 together constitute a complete and closed circuit system.

[0045] The right side of the top of the special gas cabinet 1 is fixedly connected with an outlet pipe 102 , and one end of the driving rod 14 placed in the sleeve 15 is fixedly connected with a floating valve plate 1401 . A special-shaped groove 1501 is opened in the sleeve 15 , and the outer wall of the floating valve plate 1401 is in sealing contact with the special-shaped groove 1501 .

[0046] In this embodiment, when the special gas cabinet 1 opens the outlet pipe 102 fixedly connected on the right side, the heated special gas in the steel cylinder 4 is discharged through the outlet pipe 102. When the special gas is released from the outlet of the steel cylinder 4, air pressure is also generated inside the steel cylinder 4, and this air pressure pushes the floating valve plate 1401 at the bottom of the driving rod 14 to move upward in the sleeve 15. A special-shaped groove 1501 is designed inside the sleeve 15, and this special-shaped groove 1501 cooperates with the air pressure to help lift the floating valve plate 1401. In addition, a sealing contact is formed between the notch at the bottom of the special-shaped groove 1501 and the floating valve plate 1401, ensuring that the floating valve plate 1401 will not slip in the special-shaped groove 1501.

[0047] The floating valve plate 1401 is placed directly below the special-shaped groove 1501 and is fixedly connected to an auxiliary heating rod 20. One end of the auxiliary heating rod 20 is used to be set in the cylinder 4 to assist the heating coil 5 in heating. The auxiliary heating rod 20 is placed on the outer wall of the sleeve 15 and is fixedly connected to fixed rods 1502 distributed in a circular array. The other end of the fixed rod 1502 is fixedly connected to the inner wall of the sleeve 15, and the spacing gaps between each fixed rod 1502 are for gas circulation.

[0048] In this embodiment, an auxiliary heating rod 20 is disposed inside the sleeve 15, and the auxiliary heating rod 20 is firmly mounted inside the sleeve 15 through fixing rods 1502 arranged in a circular array. The gaps between the fixing rods 1502 allow the gas to flow smoothly. The auxiliary heating rod 20 is made of metal, so when the steel cylinder 4 is heated by the heating coil 5, the metal auxiliary heating rod 20 is also heated synchronously. In this way, the auxiliary heating rod 20 heats the steel cylinder 4 from the inside to the outside inside the steel cylinder 4, effectively improving the heating efficiency of the steel cylinder 4 and expanding the heating area.

[0049] The base plate 7 is provided with symmetrically distributed support blocks 8, and cylinders 9 are placed between the support blocks 8. The ends of the cylinders 9 are fixedly connected with electromagnetic lifting blocks 17. The right side of the top of the base plate 7 is fixedly connected with a slide rail 16, and the end of the slide rail 16 is provided with an electromagnetic trigger. The electromagnetic lifting block 17 is slidably set on the slide rail 16, and its end contacts the electromagnetic trigger to generate electromagnetic lifting operation.

[0050] The top of the bottom plate 7 is provided with telescopic rods 18 in a rectangular array, the top of the telescopic rods 18 is fixedly connected with a lifting plate 3, and the top of the lifting plate 3 is provided with a placement groove 301 for placing the cylinder 4.

[0051] The bottom of the lifting plate 3 is fixedly connected with a symmetrically distributed connecting plate 19, and the outer wall of the connecting plate 19 is provided with an inclined sliding groove 1901, and a sliding bolt 1701 is slidably arranged in the sliding groove 1901, and the sliding bolt 1701 is connected to the outer wall of the electromagnetic lifting block 17.

[0052] In this embodiment, the steel cylinder 4 is fixed by the placement groove 301 on the lifting plate 3, and the cylinder 9 is started. The telescopic movement of the cylinder 9 drives the electromagnetic lifting block 17 to slide on the slide rail 16. When the end of the electromagnetic lifting block 17 contacts the electromagnetic trigger, the electromagnetic lifting mechanism is triggered, so that the electromagnetic lifting block 17 rises, the sliding bolt 1701 slides to the lower part of the slide groove 1901, and the telescopic rod 18 pushes the lifting plate 3 and the steel cylinder 4 placed on the lifting plate 3 upward to rise together until the steel cylinder 4 enters the heating coil 5. When the steel cylinder 4 needs to be replaced, the cylinder 9 is started, and the telescopic movement of the cylinder 9 drives the electromagnetic lifting block 17 to slide on the slide rail 16. When the end of the electromagnetic lifting block 17 is no longer in contact with the electromagnetic trigger, the electromagnetic lifting block 17 is lowered, the sliding bolt 1701 slides to the upper part of the slide groove 1901, and then the lifting plate 3 and the steel cylinder 4 thereon are lowered until the steel cylinder 4 is separated from the heating coil 5, at which time the steel cylinder 4 can be easily taken out and replaced with a new one.

[0053] Working principle: When using the heating equipment for special gas cabinet cylinders, first place the cylinder 4 on the top of the jacking structure, specifically fix the cylinder 4 through the placement groove 301 on the jacking plate 3, start the cylinder 9, and the telescopic movement of the cylinder 9 drives the electromagnetic jacking block 17 to slide on the slide rail 16. When the end of the electromagnetic jacking block 17 contacts the electromagnetic trigger, the electromagnetic jacking mechanism will be triggered to make the electromagnetic jacking block 17 rise, and through the cooperation of the sliding bolt 1701 and the slide groove 1901 on the connecting plate 19, the jacking plate 3 and the cylinder 4 thereon are pushed up together until the cylinder 4 enters the heating coil 5. Start the power terminal 10, and the power terminal 10 transmits electrical energy to the heating coil 5 through the connecting line 11. The heating coil 5 starts to heat up according to the principle of electromagnetic heating, and heats the cylinder 4 arranged on its outside. At the same time, the insulation pad arranged on the outer wall of the cylinder 4 can reduce heat loss and improve heating efficiency;

[0054] During the heating process, as the temperature of the gas in the steel cylinder 4 increases, the internal air pressure will gradually increase. When the air pressure increases to a certain level, it will push the floating valve plate 1401 in the sleeve 15 to rise. The rise of the floating valve plate 1401 drives the drive rod 14 to move upward. While the drive rod 14 moves upward, its end slides in the lifting rod 27. While sliding, the lifting rod 27 rotates and tilts upward with the rotating shaft 28 as the axis. While tilting, the other end of the lifting rod 27 drives the traction rod 21 to move upward. When the traction rod 21 moves upward, it drives the heating coil 5 to deform and lift up through the connecting head 2102, thereby reducing the heating amplitude of the steel cylinder 4. When the temperature in the steel cylinder 4 is too high, the air pressure will be greater, so that the floating valve plate 1401 will be lifted higher. Then, when the traction rod 21 is lifted too high, , the movable connecting rod 26 sliding in the movable groove 2101 will contact the bottom of the movable groove 2101, and while in contact, the movable connecting rod 26 will rotate, and the other end of the movable connecting rod 25 will drive the movable connecting block 25 to be pulled, so that the movable connecting block 25 slides toward one end of the insulating sliding rod 23, and after sliding, the movable connecting block 25 will be disconnected from the fixed connecting block 24, thereby cutting off the power supply of the heating coil 5, realizing intelligent protection of the equipment, and avoiding safety hazards caused by excessive temperature. When the gas pressure in the steel cylinder 4 decreases, the floating valve plate 1401 will drop back to the notch of the special-shaped groove 1501. At this time, the driving rod 14, the lifting rod 27, the traction rod 21, the movable connecting rod 26 and other components will all be reset, the movable connecting block 25 will be reconnected with the fixed connecting block 24, the heating coil 5 will be powered on again to generate heat, and continue to heat the steel cylinder 4;

[0055] When the steel cylinder 4 needs to be replaced, the cylinder 9 is started, and the telescopic movement of the cylinder 9 drives the electromagnetic lifting block 17 to slide on the slide rail 16. When the end of the electromagnetic lifting block 17 is released from contact with the electromagnetic trigger, the electromagnetic lifting block 17 is lowered, and the slide bolt 1701 slides to the high position of the slide slot 1901, and then the lifting plate 3 and the steel cylinder 4 thereon are lowered until the steel cylinder 4 is separated from the heating coil 5, at which time the steel cylinder 4 can be easily taken out and replaced with a new one.

[0056] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0057] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A heating device for a special gas cabinet cylinder, comprising a special gas cabinet body (1) and a cylinder (4), characterized in that: It also includes a lifting structure for supporting the steel cylinder (4) and a heating coil (5) wound around the outside of the steel cylinder (4), the lifting structure including a placement plate (2) arranged on the left side of the inner wall of the special gas cabinet (1) and a heat preservation pad sleeved on the outer side of the steel cylinder (4) for the heating coil (5) to assist the heating of the gas in the steel cylinder (4), an air pressure monitoring linkage mechanism for following the change of the internal air pressure of the steel cylinder (4) and adaptively adjusting the number of turns of the heating coil (5) is installed between the upper end of the heating coil (5) and the steel cylinder (4), the air pressure monitoring linkage mechanism including a sleeve (15) sleeved on the air outlet of the steel cylinder (4), a partition (12) fixedly connected to the top inner wall of the special gas cabinet (1), a driving rod (14) slidably arranged in the sleeve (15), and a lifting rod (27) slidably connected to the other end of the driving rod (14) exposed at the bottom of the partition (12); An air outlet cavity is formed between the partition (12) and the special gas cabinet (1); a rotating shaft (28) is rotatably provided at the end of the lifting rod (27), and one end of the rotating shaft (28) is fixedly connected to the inner wall of the special gas cabinet (1); a cut-off assembly for judging abnormally high pressure in the cylinder and automatically cutting off the heat source is provided between the upper end of the steel cylinder (4) and the closed circuit of the heating coil (5); the cut-off assembly comprises a movable connecting rod (26) slidably provided on the movable groove (2101), a movable power connection block (25) fixedly connected to the other end of the movable connecting rod (26), and an insulating sliding rod (23) provided through the center of the movable power connection block (25); the movable power connection block (25) is electrically connected to the heating coil (5) through the movable connecting rod (26) and the traction rod (21); a fixed power connection block (24) is also sleeved and fixed on the insulating sliding rod (23); The fixed power connection block (24) and the movable power connection block (25) are electrically connected in a movable plug-in manner. The outer wall of the traction rod (21) is provided with a movable groove (2101). The driving rod (14) is used to slide and lift to drive the lifting rod (27) to tilt and lift so that the traction rod (21) drives the heating coil (5) to be lifted and deformed through the connecting head (2102). When the traction rod (21) is lifted too high, the movable connecting rod (26) sliding in the movable groove (2101) will contact the bottom of the movable groove (2101). At the same time, the movable connecting rod (26) will rotate and the other end of the movable power connection block (25) will be driven to be pulled, so that the movable power connection block (25) slides toward one end of the insulating sliding rod (23). After sliding, the movable power connection block (25) and the fixed power connection block (24) are disconnected, thereby cutting off the power supply of the heating coil (5).

2. A heating device for special gas tank cylinders according to claim 1, characterized in that: The special gas cabinet (1) is rotatably provided with a box door (101), the bottom end of the inner wall of the special gas cabinet (1) is equipped with a bottom plate (7), the top right side of the placement plate (2) is provided with a slot for lifting the jacking structure, the left side of the top of the placement plate (2) is fixedly connected with a fixing column (6), the fixing column (6) is bolted with an electric terminal (10), the top and bottom of the electric terminal (10) are electrically connected with a connecting wire (11), a steel cylinder (4) is placed on the top of the jacking structure, and the connecting wire (11) at the bottom of the electric terminal (10) is electrically connected to the heating coil (5).

3. The heating device for special gas tank cylinders according to claim 1 is characterized in that: The top of the partition (12) is fixedly connected to a limit block (13), a through groove is provided at the center of the limit block (13), and the through groove is sleeved on the outer wall of the driving rod (14) for driving the driving rod (14) to move vertically, and a traction rod (21) is slidably provided at the other end of the lifting rod (27), and a connecting head (2102) is fixedly connected to the bottom of the traction rod (21), and the connecting head (2102) is fixedly connected to the end of the heating coil (5).

4. The heating device for special gas tank cylinders according to claim 1 is characterized in that: One end of the fixed power connection block (24) is electrically connected to the power terminal (10) via a connecting wire (11); one end of the insulating sliding rod (23) is sleeved with a connecting rod (22) fixed thereto; the other end of the connecting rod (22) is L-shaped and fixedly connected to the outer wall of the power terminal (10).

5. The heating device for special gas tank cylinders according to claim 4 is characterized in that: The power terminal (10) is electrically connected to the connection line (11), the fixed power connection block (24) and the movable power connection block (25) to form a closed loop.

6. The heating device for special gas tank cylinders according to claim 3 is characterized in that: The right side of the top of the special gas cabinet (1) is fixedly connected to an outlet pipe (102), one end of the driving rod (14) placed in the sleeve (15) is fixedly connected to a floating valve plate (1401), a special-shaped groove (1501) is provided in the sleeve (15), and the outer wall of the floating valve plate (1401) is in sealing contact with the special-shaped groove (1501).

7. A heating device for a special gas tank cylinder according to claim 6, characterized in that: The floating valve plate (1401) is placed directly below the special-shaped groove (1501) and is fixedly connected to an auxiliary heating rod (20). One end of the auxiliary heating rod (20) is used to be arranged in the cylinder (4) to assist the heating coil (5) in heating. The auxiliary heating rod (20) is placed in the outer wall of the sleeve (15) and is fixedly connected to fixed rods (1502) distributed in a circular array. The other end of the fixed rod (1502) is fixedly connected to the inner wall of the sleeve (15), and the spacing gaps generated between each of the fixed rods (1502) are used for gas circulation.

8. The heating device for special gas tank cylinders according to claim 2 is characterized in that: The bottom plate (7) is provided with symmetrically distributed support blocks (8), a cylinder (9) is placed between the support blocks (8), an end of the cylinder (9) is fixedly connected to an electromagnetic lifting block (17), a slide rail (16) is fixedly connected to the right side of the top of the bottom plate (7), and an electromagnetic trigger is provided at the end of the slide rail (16), the electromagnetic lifting block (17) is slidably arranged on the slide rail (16), and an electromagnetic lifting operation is performed by contacting the electromagnetic trigger at its end.

9. The heating device for special gas tank cylinders according to claim 8 is characterized in that: The top of the bottom plate (7) is provided with telescopic rods (18) in a rectangular array, the top of the telescopic rods (18) is fixedly connected to a lifting plate (3), and the top of the lifting plate (3) is provided with a placement groove (301) for placing the steel cylinder (4).

10. A heating device for special gas tank cylinders according to claim 9, characterized in that: The bottom of the lifting plate (3) is fixedly connected to a symmetrically distributed connecting plate (19), the outer wall of the connecting plate (19) is provided with an inclined sliding groove (1901), a sliding bolt (1701) is slidably arranged in the sliding groove (1901), and the sliding bolt (1701) is connected to the outer wall of the electromagnetic lifting block (17).

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