An explosion-proof gas cylinder for special gas delivery

Abstract

The invention discloses an explosion-proof gas cylinder for conveying special gas, which relates to the technical field of conveying special gas, and comprises a cabinet, a lifting mechanism, a protection mechanism and a bottom plate. A cabinet door is arranged on the front of the cabinet, and one side of the cabinet door is hinged to the cabinet. Gas cylinders are placed inside the cabinet, and three gas cylinders are arranged. The bottoms of the three gas cylinders are supported by the lifting mechanism. The input of special gas is achieved by connecting the exhaust valve on the top of the gas cylinder with the bolt at one end of the first connecting pipe. The gas enters the pipe through the first connecting pipe, and the original air in the pipe is squeezed out to avoid air in the pipeline from contaminating the special gas. After the first control valve is closed, the gas pressure in the pipe increases, and the telescopic block is pushed up, so that the gas enters the conveying pipe through the holes and grooves on the surface of the telescopic block to complete the gas conveying. The design of the spring and the telescopic block in the device effectively prevents the high-pressure gas in the series-connected gas cylinder from entering the low-pressure gas cylinder, and avoids the possible pressure imbalance and safety risks.

Description

Technical Field

[0001] The invention relates to the technical field of special gas transportation, in particular to an explosion-proof gas cylinder for special gas transportation. Background Art

[0002] With the rapid development of industrial technology, special gases play an increasingly important role in emerging industries such as semiconductors and LEDs. Special gases are usually flammable, explosive, and highly toxic. Therefore, their safe transportation and storage have become challenges that laboratories and industrial sites must face. The traditional gas supply method has gradually been replaced by more professional and safe special gas systems and special gas cabinets to ensure the safety of special gas use and personnel safety. After searching, the Chinese patent announcement number CN221648179U discloses an explosion-proof gas cylinder cabinet. Although the smoke sensor set in the device can monitor the gas concentration inside the device in real time, the controller can be used to control the buzzer alarm and the alarm light to start working when the gas concentration inside the device is abnormal, and thus it can serve the purpose of timely reminding relevant personnel when the gas pipe leaks, but the gas cylinder usually needs to be connected to the gas delivery pipeline after being installed inside the cabinet to carry out gas delivery. When the gas cylinder is connected to the gas delivery pipeline, there will be air entering from the outside inside the delivery pipeline, which will cause the special gas to be mixed with external air at the beginning of delivery, which will cause the special gas to be contaminated, thereby affecting the purity of the special gas;

[0003] In addition, in the case of special gas leakage caused by damage to the bottle, although it can be monitored by smoke sensors, the smoke sensors may be interfered by other gases and cause false alarms. This is especially true in industrial sites, where the gas types are complex and easily affected by other gases. In addition, the smoke sensors respond differently to different gases and need to be calibrated for different gases. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides an explosion-proof gas cylinder for transporting special gases, which solves the problems in the background technology that the purity of the special gas is easily affected when the existing device is used, and the smoke sensor has the risk of false alarms.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an explosion-proof gas cylinder for special gas transportation, comprising a cabinet, a lifting mechanism, a protective mechanism and a bottom plate, a cabinet door is arranged on the front of the cabinet, one side of the cabinet door is hinged to the cabinet, a gas cylinder is placed inside the cabinet, and three gas cylinders are arranged, the bottoms of the three gas cylinders are supported by the lifting mechanism, the lifting mechanism is arranged under the cabinet, the lifting mechanism is installed on the top of the bottom plate, the bottom plate is located under the cabinet for supporting the cabinet to work, holes are opened at the four ends of the bottom of the cabinet, and the inner walls of the holes are welded to the outer walls of the support columns, the support columns are distributed at the four ends of the top of the bottom plate, and one end of the bottom of the support column is welded to the bottom plate, one end of the top of the gas cylinder is connected with the protective mechanism, three protective mechanisms are arranged, and the three protective mechanisms are connected in series through a delivery pipe, the gas cylinder comprises a detection mechanism and an adaptive adjustment mechanism, the detection mechanism is used to detect the internal sealing of the gas cylinder, and the adaptive adjustment mechanism is used to adjust the deformation caused by thermal expansion and contraction of the gas cylinder.

[0006] Preferably, the lifting mechanism includes a fixed platform and an adjusting mechanism, the adjusting mechanism is used to drive the fixed platform to move up and down, and there is a gap between the bottom of the fixed platform and the bottom plate, three fixed platforms are provided, one end of the top of the three fixed platforms is supported on the bottom of the gas cylinder, and the fixed platforms correspond to the three circular hole grooves on the bottom of the cabinet respectively, the three fixed platforms are connected to each other by support rods, and the two sides of the support rods are connected to the adjusting mechanism, and the design of the lifting mechanism allows the fixed platform to move up and down, so that it can be adjusted according to the height of different gas cylinders or the deformation of the bottom of the gas cylinder to ensure that the bottom of the gas cylinder is always effectively supported, thereby enhancing the adaptability of the gas cylinder cabinet to gas cylinders of different specifications.

[0007] Preferably, two adjusting mechanisms are provided, and the two adjusting mechanisms include a second threaded rod, one end of the bottom of the second threaded rod is welded to the end of the support rod, the outer wall of the second threaded rod is connected to the internal thread of the worm wheel, one side of the worm wheel is meshingly connected to one side of the worm, both ends of the worm are rotatably connected to the outer shell, and a handle is welded to the end of the worm, a hole groove is provided on one side of the bottom of the outer shell, and the hole groove on one side of the bottom of the outer shell is in sliding contact with the end of the support rod, and the bottom of the outer shell is welded to the base plate, the threaded connection between the second threaded rod and the worm wheel and the meshing connection between the worm wheel and the worm constitute an efficient transmission system; this design makes it possible to drive the threaded rod to move up and down by rotating the worm, thereby realizing the lifting and lowering of the fixed platform, and this mechanical transmission method is stable and reliable.

[0008] Preferably, the detection mechanism includes a tank body and an inner liner, the tank body is located outside the inner liner, the top of the inner liner is connected to the exhaust valve, and there is a gap between the tank body and the inner liner, a base is installed at the bottom of the tank body, and the bottom of the base is in contact with the top of the support platform, a roller is installed at the bottom of the base, a support bar is provided between the inner liner and the tank body, and a pressure gauge and a one-way valve are installed outside the tank body, the pressure gauge detection end and the one-way valve are both connected to the cavity between the tank body and the inner liner, and a vacuum state is present between the tank body and the inner liner. The detection mechanism consists of the tank body and the inner liner. This double-layer structure design provides an additional protective layer, which enhances the safety and durability of the gas cylinder. Practicality, there is a vacuum state between the tank body and the liner. This design helps to reduce heat transfer, improve the thermal insulation performance of the gas cylinder, and reduce the impact of the external environment on the purity of special gases. The pressure gauge is installed on the outside of the tank body, which can monitor the pressure changes between the tank body and the liner in real time. When the liner or the tank body is damaged, the pressure gauge can display the pressure changes in time to remind the operator to check and maintain. The pressure gauge can be connected to the remote terminal with an electronic pressure gauge, which is conducive to further improving the timeliness of detection. A smoke sensor is installed inside the cabinet. The cooperation between the smoke sensor and the detection mechanism is conducive to further improving safety.

[0009] Preferably, the support bars are provided with two groups, and the two groups of support bars are respectively distributed on the top and bottom outer sides of the inner liner, and each group of support bars is regularly distributed in a circular shape with equal spacing. One side of the support bar is in contact with the outer wall of the inner liner, and the other side of the support bar is welded to the inner wall of the tank body. The support bars have circular holes and grooves distributed at equal spacing from top to bottom. The arrangement of the support bars enhances the structural stability between the inner liner and the tank body. By respectively arranging two groups of support bars on the top and bottom outer sides, the force generated by the internal pressure can be effectively dispersed and withstood, and the risk of deformation of the gas cylinder during use can be reduced. The support bars are regularly distributed in a circular shape with equal spacing. This design helps to evenly distribute the pressure on the inner liner, reduce local stress concentration, and improve the durability and reliability of the gas cylinder. Circular holes and grooves are distributed inside the support bars, which can be used as heat exchange channels to help adjust the temperature difference between the inner liner and the tank body.

[0010] Preferably, the adaptive adjustment mechanism includes a fixed ring and a telescopic ring, the inner wall of the fixed ring is welded to the outer wall of the inner liner, and the two ends of the top of the fixed ring are rotatably connected to the bottoms of two first threaded rods respectively, an adjusting head is welded on the top of the first threaded rod, a hexagonal groove is provided on the top of the adjusting head, and one end of the top of the first threaded rod is rotatably connected to the top of the tank body, the two first threaded rods are connected to the internal threads of the telescopic ring, the telescopic ring is welded to the outer wall of the inner liner, the outer wall surface of the middle part of the inner liner is a corrugated structure, and the corrugated structure is located between the telescopic ring and the fixed ring, there is a gap between the top of the telescopic ring and the support bar, and the first An adjusting head is welded on the top of a threaded rod, and a hexagonal groove is provided on the top of the adjusting head, which provides an easy-to-operate interface so that the operator can easily adjust the threaded rod using tools to achieve quick adjustment. The corrugated structure on the outer wall surface of the middle part of the inner liner is located between the telescopic ring and the fixed ring. This design can absorb thermal expansion and contraction caused by temperature changes, reduce stress concentration of the inner liner, and extend the service life of the gas cylinder. There is a gap between the top of the telescopic ring and the support bar. This design provides a certain amount of activity space for the telescopic ring, allowing it to make corresponding adjustments according to the expansion or contraction of the inner liner, thereby reducing structural stress.

[0011] Preferably, the protective mechanism includes an exhaust mechanism and a check mechanism, the exhaust mechanism is connected to the exhaust valve at the top of the gas cylinder, and the other end of the exhaust mechanism is connected to the delivery pipe through the check mechanism, the check mechanism is used to prevent the reverse circulation of the airflow inside the exhaust mechanism, and the check mechanism is designed to prevent the reverse circulation of the airflow inside the exhaust mechanism, that is, to prevent external gas or air from flowing back into the gas cylinder, which is crucial for maintaining the purity of special gases and preventing pollution. The connection between the check mechanism and the delivery pipe ensures the unidirectionality of the gas flow, that is, only allowing the gas to flow from the gas cylinder to the point of use, and not allowing the gas to flow back, which helps to prevent gas mixing and cross-contamination.

[0012] Preferably, the exhaust mechanism includes a first connecting pipe, one end of which is connected to the top of the inner tank, one end of the first connecting pipe is in an L-shaped structure, and one side of the top of the first connecting pipe is connected to a control valve, and the control valve is used to exhaust the air inside the first connecting pipe, wherein the output ends of the three control valves can be connected to the pipeline so that the air discharged by the three control valves can be processed centrally.

[0013] Preferably, the non-return mechanism includes a telescopic block, one end of the bottom of the telescopic block is located inside the top end of the first connecting tube, and the outer wall of the top end of the telescopic block is provided with an annular protrusion structure, and the outer wall of the telescopic block is provided with holes and grooves in annular shapes with equal intervals, and the outer wall of the telescopic block is in sliding contact with the inner wall of the first connecting tube, and the interior of the telescopic block is a hollow structure, the top of the telescopic block is in contact with the bottom of the spring, and the spring is located inside the second connecting tube, and the bottom of the second connecting tube is connected to the first connecting tube. The design of the top of the telescopic block contacting the bottom of the spring allows the telescopic block to automatically reset under the action of the spring force. This design helps to quickly respond to airflow changes and improve the reaction speed and efficiency of the non-return mechanism.

[0014] Preferably, a pressure block is provided on the top of the spring, and the top of the pressure block is rotatably connected to one end of the bottom of the third threaded rod, the outer wall of the third threaded rod is threadedly connected to the top of the second connecting tube, and a turntable is welded on the top of the third threaded rod, and the turntable can be rotated to drive the third threaded rod to rotate, and the third threaded rod can drive the pressure block to move downward, thereby adjusting the pressure of the spring, and then adjusting the upward ejection pressure of the telescopic block.

[0015] The present invention provides an explosion-proof gas cylinder for conveying special gases. It has the following beneficial effects:

[0016] (1) An explosion-proof gas cylinder for conveying special gases. During use, the device realizes the input of special gases by connecting the exhaust valve on the top of the gas cylinder with the bolt at one end of the first connecting pipe. The gas enters the pipe through the first connecting pipe, displaces the original air in the pipe, and is discharged through the control valve to prevent the air in the pipeline from contaminating the special gases. After closing the first control valve, the gas pressure in the pipe increases, pushing the telescopic block up, allowing the gas to enter the conveying pipe through the holes and grooves on the surface of the telescopic block, completing the gas conveyance. The design of the spring and telescopic block in the device effectively prevents the high-pressure gas in the series-connected gas cylinder from entering the low-pressure gas cylinder, thus avoiding possible pressure imbalance and safety risks.

[0017] (2) An explosion-proof gas cylinder for transporting special gases. The gas cylinder adopts a double-layer structure design, consisting of an inner liner and a tank body. The space between the inner liner and the tank body is evacuated into a vacuum state through a one-way valve to maintain pressure. The pressure gauge is used to monitor the pressure change between the inner liner and the tank body. If the inner liner or the tank body is damaged, external air will enter the vacuum cavity, causing pressure changes. Maintenance personnel can detect this change through the pressure gauge and perform repairs or replacements in time, thereby reducing the risk of leakage. In addition, the vacuum structure between the inner liner and the tank body effectively hinders heat conduction due to the lack of heat transfer medium, plays a role in insulation, and helps to maintain the stability of the internal temperature of the gas cylinder.

[0018] (3) The explosion-proof gas cylinders for transporting special gases are designed with rollers inside the gas cylinder cabinet. This design makes it easier to move the gas cylinders when taking them out, thereby improving the convenience of transporting and replacing the gas cylinders. After replacing the gas cylinders, the worm can be driven to rotate by turning the handle, thereby driving the worm wheel to move the second threaded rod upward, and the support rod and fixed platform connected to the bottom of the threaded rod will rise accordingly, lifting the bottom of the tank body to fix the tank body in the cabinet. In addition, a gap is left between the bottom of the cabinet and the ground. This gap reduces the chance of the bottom of the cabinet directly contacting the moisture on the ground, effectively reducing the risk of cabinet corrosion or internal equipment getting damp due to ground moisture.

[0019] (4) In the explosion-proof gas cylinder for transporting special gases, the outer wall surface of the inner liner of the gas cylinder is designed with a corrugated expansion joint. This design can effectively absorb the thermal expansion and contraction caused by temperature changes, and prevent the pipeline from breaking or deforming due to temperature fluctuations. By rotating the adjusting head, the first threaded rod can be driven to rotate, and then the first threaded rod can drive the expansion ring to move up and down, thereby adjusting the distance between the expansion ring and the fixed ring. This design is conducive to controlling the expansion and contraction of the corrugated expansion joint on the outer wall of the inner liner, thereby ensuring the stability and safety of the gas cylinder during use.

[0020] This solves the problem that the purity of special gases is easily affected when the existing device is used, and the problem that the smoke sensor has the risk of false alarms. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the tank structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the internal structure of the cabinet of the present invention;

[0025] Figure 5 This is a schematic diagram of the telescopic block structure of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the fixing platform of the present invention;

[0027] Figure 7 It is a schematic diagram of the worm wheel and worm structure of the present invention.

[0028] In the figure, 1. cabinet; 2. cabinet door; 3. gas cylinder; 301. base; 302. roller; 303. tank; 304. one-way valve; 305. pressure gauge; 306. support bar; 307. fixing ring; 308. telescopic ring; 309. first threaded rod; 310. adjusting head; 311. exhaust valve; 312. liner; 4. lifting mechanism; 401. fixing platform; 402. support rod; 403. outer shell; 404. second threaded rod; 405. worm gear; 406. worm; 407. handle; 5. protection mechanism; 501. first connecting pipe; 502. control valve; 503. second connecting pipe; 504. telescopic block; 505. spring; 506. pressure block; 507. third threaded rod; 508. turntable; 6. delivery pipe; 7. bottom plate; 8. supporting column. DETAILED DESCRIPTION

[0029] 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.

[0030] Embodiment 1:

[0031] See also Figure 1-7The embodiment of the present invention provides a technical solution: an explosion-proof gas cylinder for special gas transportation, comprising a cabinet 1, a lifting mechanism 4, a protective mechanism 5 and a bottom plate 7. A cabinet door 2 is arranged on the front of the cabinet 1, and one side of the cabinet door 2 is hinged to the cabinet 1. A gas cylinder 3 is placed inside the cabinet 1, and three gas cylinders 3 are arranged. The bottoms of the three gas cylinders 3 are supported by the lifting mechanism 4, and the lifting mechanism 4 is arranged below the cabinet 1. The lifting mechanism is installed on the top of the bottom plate 7. The bottom plate 7 is located below the cabinet 1 to support the cabinet 1 to work. Holes are opened at the four ends of the bottom of the cabinet 1, and the inner wall of the hole is welded to the outer wall of the support column 8. The support column 8 is distributed at the four ends of the top of the bottom plate 7, and one end of the bottom of the support column 8 is welded to the bottom plate 7. One end of the top of the gas cylinder 3 is connected with the protective mechanism 5, and the protective mechanism 5 is arranged with three. The three protection mechanisms 5 are connected in series with each other through the delivery pipe 6. The gas cylinder 3 includes a detection mechanism and an adaptive adjustment mechanism. The detection mechanism is used to detect the internal seal of the gas cylinder 3, and the adaptive adjustment mechanism is used to adjust the deformation caused by thermal expansion and contraction of the gas cylinder 3. The protection mechanism 5 includes an exhaust mechanism and a check mechanism. The exhaust mechanism is connected to the exhaust valve 311 at the top of the gas cylinder 3, and the other end of the exhaust mechanism is connected to the delivery pipe 6 through the check mechanism. The check mechanism is used to prevent the reverse flow of the airflow inside the exhaust mechanism. The exhaust mechanism includes a first connecting pipe 501, one end of the first connecting pipe 501 is connected to the top of the inner tank 312, one end of the first connecting pipe 501 is in an L-shaped structure, and one side of the top of the first connecting pipe 501 is connected to the control valve 502, and the control valve 502 is used to exclude the first connecting pipe 501. The internal air, the check mechanism includes a telescopic block 504, one end of the bottom of the telescopic block 504 is located inside the top end of the first connecting tube 501, and the outer wall of the top end of the telescopic block 504 is provided with an annular protruding structure, and the outer wall of the telescopic block 504 is provided with holes and grooves in annular equidistant intervals, and the outer wall of the telescopic block 504 is in sliding contact with the inner wall of the first connecting tube 501, the interior of the telescopic block 504 is a hollow structure, the top of the telescopic block 504 is in contact with the bottom of the spring 505, the spring 505 is located inside the second connecting tube 503, the bottom of the second connecting tube 503 is connected to the first connecting tube 501, and a pressure block 506 is provided on the top of the spring 505, and the top of the pressure block 506 is rotatably connected to the bottom end of the third threaded rod 507, and the outer wall of the third threaded rod 507 is connected to the second connecting tube 5 03 is threadedly connected at the top, and a turntable 508 is welded on the top of the third threaded rod 507. When the device is in use, the exhaust valve 311 at one end of the top of the gas cylinder 3 is connected to one end of the first connecting pipe 501 by bolts, so that the special gas can enter the interior of the connecting pipe through one end of the first connecting pipe 501, so that the special gas can fill the interior of the first connecting pipe 501, and then the air inside the first connecting pipe 501 can be squeezed out by the special gas, so that the air can be discharged through the control valve 502, and then the first control valve 502 is closed. After the first control valve 502 is closed, the pressure of the compressed gas inside the first connecting pipe 501 will increase, and then the telescopic block 504 will be pushed up, so that the gas can pass through the holes and grooves on the surface of the telescopic block 504 and enter the interior of the delivery pipe 6.In this way, gas is delivered. Due to the presence of the spring 505 and the telescopic block 504, when multiple gas cylinders 3 in the cabinet 1 are connected in series through the delivery pipe 6, it is possible to prevent the gas inside the high-pressure gas cylinder 3 from entering the low-pressure gas, and to avoid the pressure imbalance that may be caused by the high-pressure gas entering the low-pressure gas cylinder 3, thereby reducing safety risks.

[0032] Embodiment 2:

[0033] The embodiment of the present invention provides a technical solution: an explosion-proof gas cylinder for special gas transportation, the lifting mechanism 4 includes a fixed platform 401 and an adjustment mechanism, the adjustment mechanism is used to drive the fixed platform 401 to move up and down, and there is a gap between the bottom of the fixed platform 401 and the bottom plate 7, three fixed platforms 401 are provided, one end of the top of the three fixed platforms 401 is supported on the bottom of the gas cylinder 3, and the fixed platforms 401 correspond to the three circular holes at the bottom of the cabinet 1 respectively, and the three fixed platforms 401 are connected to each other through support rods 402, and the two sides of the support rods 402 are connected to the adjustment mechanism The second threaded rod 404 is connected to the outer shell 403, and the bottom end of the second threaded rod 404 is welded to the end of the support rod 402. The outer wall of the second threaded rod 404 is threadedly connected to the inner wall of the worm wheel 405. One side of the worm wheel 405 is meshedly connected to one side of the worm 406. Both ends of the worm 406 are rotatably connected to the outer shell 403, and a handle 407 is welded to the end of the worm 406. A hole groove is provided on one side of the bottom of the outer shell 403, and the hole groove on one side of the bottom of the outer shell 403 is in sliding contact with the end of the support rod 402, and the outer shell 40 The bottom of the gas cylinder 3 is welded to the bottom plate 7, the second threaded rod 404 is threadedly connected to the worm wheel 405, and the worm wheel 405 is meshedly connected to the worm 406. Since the bottom of the gas cylinder 3 inside the gas cylinder cabinet 3 is provided with a roller 302, the gas cylinder 3 can be easily moved when it is taken out through the roller 302, thereby improving the convenience of carrying and replacing the gas cylinder 3. When the replaced gas cylinder 3 is placed in the cabinet body 1, the handle 407 is turned, so that the handle 407 can drive the worm 406 to rotate, and the worm 406 can drive the worm 406 to rotate. The wheel 405 rotates, and the worm gear 405 can drive the second threaded rod 404 to move upward, and then the bottom end of the second threaded rod 404 can drive the support rod 402 and the fixed platform 401 to move upward, so that the top of the fixed platform 401 can lift the bottom of the tank body 303, so that the tank body 303 can be fixed inside the cabinet body 1. In addition, since there is a gap between the bottom of the cabinet body 1 and the ground, the gap can reduce the chance of the bottom of the cabinet body 1 directly contacting the ground moisture, thereby reducing the risk of corrosion of the cabinet body 1 or moisture in the internal equipment due to ground moisture.

[0034] Embodiment 3:

[0035] The embodiment of the present invention provides a technical solution: an explosion-proof gas cylinder for special gas delivery, wherein the detection mechanism comprises a tank body 303 and an inner liner 312, wherein the tank body 303 is located outside the inner liner 312, the top of the inner liner 312 is connected to the exhaust valve 311, and there is a gap between the tank body 303 and the inner liner 312, a base 301 is installed at the bottom of the tank body 303, and the bottom of the base 301 is in contact with the top of the support platform, a roller 302 is installed at the bottom of the base 301, a support bar 306 is arranged between the inner liner 312 and the tank body 303, and the tank body 3 03 is equipped with a pressure gauge 305 and a one-way valve 304 on the outside. The detection end of the pressure gauge 305 and the one-way valve 304 are both connected to the cavity between the tank body 303 and the inner liner 312. There is a vacuum state between the tank body 303 and the inner liner 312. Two groups of support bars 306 are provided, and the two groups of support bars 306 are respectively distributed on the top and bottom outer sides of the inner liner 312, and each group of support bars 306 is regularly distributed in a circular shape with equal spacing. One side of the support bar 306 is in contact with the outer wall of the inner liner 312, and the other side of the support bar 306 is welded to the inner wall of the tank body 303. The support bar 306 has circular holes and grooves distributed at equal intervals from top to bottom. The gas cylinder 3 adopts a double-layer structure, which is composed of an inner liner 312 and a tank body 303. The inner liner 312 and the tank body 303 are evacuated to a vacuum state through a one-way valve 304 to maintain the pressure. The pressure between the inner liner 312 and the tank body 303 is monitored by a pressure gauge 305. When the inner liner 312 or the tank body 303 is damaged, external air will enter the vacuum cavity between the inner liner 312 and the tank body 303, thereby causing the inner liner 312 to be damaged. 2 and the tank body 303 changes, so that the maintenance personnel can detect the damage of the gas cylinder 3 through the pressure gauge 305, and then repair and replace it in time, and the risk of leakage of the gas cylinder 3 is greatly reduced by the double-layer structure of the gas cylinder 3. In addition, due to the vacuum structure between the liner 312 and the tank body 303, under the vacuum state, due to the lack of a medium for transferring heat, the conduction of heat will be hindered, which can effectively reduce the conduction of heat, thereby playing a role in heat preservation of the gas cylinder 3, thereby helping to stabilize the internal temperature of the gas cylinder 3.

[0036] Embodiment 4:

[0037] The embodiment of the present invention provides a technical solution: an explosion-proof gas cylinder for conveying special gases, wherein the adaptive adjustment mechanism comprises a fixed ring 307 and a telescopic ring 308, the inner wall of the fixed ring 307 is welded to the outer wall of the inner liner 312, and the two ends of the top of the fixed ring 307 are rotatably connected to the bottoms of two first threaded rods 309 respectively, an adjustment head 310 is welded to the top of the first threaded rod 309, the top of the adjustment rod is provided with a hexagonal groove, and one end of the top of the first threaded rod 309 is rotatably connected to the top of the tank body 303, the two first threaded rods 309 are connected to the internal threads of the telescopic ring 308, the telescopic ring 308 is welded to the outer wall of the inner liner 312, the outer wall surface of the middle part of the inner liner 312 is a corrugated structure, and the corrugated structure is located between the telescopic ring 308 and the fixed ring 3 07, there is a gap between the top of the telescopic ring 308 and the support bar 306, an adjusting head 310 is welded on the top of the first threaded rod 309, and a hexagonal groove is provided on the top of the adjusting head. Since a corrugated telescopic joint is provided on the outer wall surface of the inner liner 312, the corrugated telescopic joint can absorb the thermal expansion and cold contraction caused by the temperature change in the inner liner 312, and prevent the pipeline from breaking or deforming due to temperature change. By rotating the adjusting head 310, the adjusting head 310 can drive the first threaded rod 309 to rotate, and then the first threaded rod 309 can drive the telescopic ring 308 to move up and down, so as to adjust the distance between the telescopic ring 308 and the fixed ring 307, which is beneficial to limit the telescopic amount of the corrugated telescopic joint on the outer wall of the inner liner 312.

[0038] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An explosion-proof gas cylinder for special gas transportation, characterized in that: The cabinet (1) comprises a cabinet body (1), a lifting mechanism (4), a protective mechanism (5) and a bottom plate (7); the cabinet body (1) is provided with a cabinet door (2) on the front side, one side of the cabinet door (2) is hinged to the cabinet body (1); a gas cylinder (3) is placed inside the cabinet body (1), and three gas cylinders (3) are provided. The bottoms of the three gas cylinders (3) are supported by the lifting mechanism (4); the lifting mechanism (4) is provided below the cabinet body (1); the lifting mechanism is installed on the top of the bottom plate (7); the bottom plate (7) is located below the cabinet body (1) and is used to support the cabinet body (1) to work; the four ends of the bottom of the cabinet body (1) are provided with a protective mechanism (5); A hole groove is provided, and the inner wall of the hole groove is welded to the outer wall of the support column (8), the support column (8) is distributed at the four ends of the top of the bottom plate (7), and one end of the bottom of the support column (8) is welded to the bottom plate (7), one end of the top of the gas cylinder (3) is connected to the protection mechanism (5), three protection mechanisms (5) are provided, and the three protection mechanisms (5) are connected in series with each other through a conveying pipe (6), the gas cylinder (3) includes a detection mechanism and an adaptive adjustment mechanism, the detection mechanism is used to detect the internal sealing of the gas cylinder (3), and the adaptive adjustment mechanism is used to adjust the deformation caused by thermal expansion and contraction of the gas cylinder (3).

2. An explosion-proof gas cylinder for special gas transportation according to claim 1, characterized in that: The lifting mechanism (4) comprises a fixed platform (401) and an adjusting mechanism, wherein the adjusting mechanism is used to drive the fixed platform (401) to move up and down, and there is a gap between the bottom of the fixed platform (401) and the bottom plate (7), and three fixed platforms (401) are provided, and one end of the top of the three fixed platforms (401) is supported on the bottom of the gas cylinder (3), and the fixed platforms (401) respectively correspond to three circular holes at the bottom of the cabinet (1), and the three fixed platforms (401) are connected to each other through support rods (402), and both sides of the support rods (402) are connected to the adjusting mechanism.

3. An explosion-proof gas cylinder for special gas transportation according to claim 2, characterized in that: The two adjustment mechanisms are provided, and the two adjustment mechanisms include a second threaded rod (404), one end of the bottom of the second threaded rod (404) is welded to the end of the support rod (402), the outer wall of the second threaded rod (404) is threadedly connected to the inside of the worm wheel (405), one side of the worm wheel (405) is meshedly connected to one side of the worm (406), both ends of the worm (406) are rotatably connected to the outer shell (403), and a handle (407) is welded to the end of the worm (406), a hole groove is provided on one side of the bottom of the outer shell (403), and the hole groove on one side of the bottom of the outer shell (403) is in sliding contact with the end of the support rod (402), and the bottom of the outer shell (403) is welded to the bottom plate (7).

4. The explosion-proof gas cylinder for special gas transportation according to claim 1, characterized in that: The detection mechanism comprises a tank body (303) and an inner liner (312); the tank body (303) is located outside the inner liner (312); the top of the inner liner (312) is connected to the exhaust valve (311); and a gap exists between the tank body (303) and the inner liner (312); a base (301) is installed at the bottom of the tank body (303); the bottom of the base (301) is in contact with the top of the support platform; a roller (302) is installed at the bottom of the base (301); a support bar (306) is provided between the inner liner (312) and the tank body (303); a pressure gauge (305) and a one-way valve (304) are installed outside the tank body (303); the detection end of the pressure gauge (305) and the one-way valve (304) are both connected to the cavity between the tank body (303) and the inner liner (312); and a vacuum state is present between the tank body (303) and the inner liner (312).

5. The explosion-proof gas cylinder for special gas transportation according to claim 4, characterized in that: The support bars (306) are provided in two groups, and the two groups of support bars (306) are respectively distributed on the outer sides of the top and bottom of the inner liner (312), and each group of support bars (306) is regularly distributed in a circular shape with equal spacing, one side of the support bar (306) is in contact with the outer wall of the inner liner (312), and the other side of the support bar (306) is welded to the inner wall of the tank body (303), and the inside of the support bar (306) has circular holes and grooves distributed in an equal spacing from top to bottom.

6. The explosion-proof gas cylinder for special gas transportation according to claim 1, characterized in that: The adaptive adjustment mechanism comprises a fixed ring (307) and a telescopic ring (308); the inner wall of the fixed ring (307) is welded to the outer wall of the inner liner (312); and the two ends of the top of the fixed ring (307) are rotatably connected to the bottoms of two first threaded rods (309) respectively; an adjustment head (310) is welded to the top of the first threaded rod (309); a hexagonal groove is provided on the top of the adjustment head; and one end of the top of the first threaded rod (309) is rotatably connected to the top of the tank body (303); the two first threaded rods (309) are internally threadedly connected to the telescopic ring (308); the telescopic ring (308) is welded to the outer wall of the inner liner (312); the outer wall surface of the middle part of the inner liner (312) is in a corrugated structure; and the corrugated structure is located between the telescopic ring (308) and the fixed ring (307); and there is a gap between the top of the telescopic ring (308) and the support bar (306).

7. The explosion-proof gas cylinder for special gas transportation according to claim 1, characterized in that: The protection mechanism (5) comprises an exhaust mechanism and a non-return mechanism, wherein the exhaust mechanism is connected to an exhaust valve (311) at the top of the gas cylinder (3), and the other end of the exhaust mechanism is connected to a delivery pipe (6) via the non-return mechanism, and the non-return mechanism is used to prevent reverse flow of airflow inside the exhaust mechanism.

8. The explosion-proof gas cylinder for special gas transportation according to claim 1, characterized in that: The exhaust mechanism comprises a first connecting pipe (501), one end of the first connecting pipe (501) is connected to the top of the inner liner (312), one end of the first connecting pipe (501) is in an L-shaped structure, and one side of the top of the first connecting pipe (501) is connected to a control valve (502), and the control valve (502) is used to exhaust the air inside the first connecting pipe (501).

9. The explosion-proof gas cylinder for special gas transportation according to claim 7, characterized in that: The non-return mechanism comprises a telescopic block (504), the bottom end of the telescopic block (504) is located inside the top end of the first connecting tube (501), and the outer wall of the top end of the telescopic block (504) is provided with an annular protruding structure, and the outer wall of the telescopic block (504) is provided with holes and grooves in annular shapes and at equal intervals, and the outer wall of the telescopic block (504) is in sliding contact with the inner wall of the first connecting tube (501), the interior of the telescopic block (504) is a hollow structure, the top of the telescopic block (504) is in contact with the bottom of a spring (505), and the spring (505) is located inside the second connecting tube (503), and the bottom of the second connecting tube (503) is connected to the first connecting tube (501).

10. The explosion-proof gas cylinder for special gas transportation according to claim 9, characterized in that: A pressure block (506) is provided at the top of the spring (505), and the top of the pressure block (506) is rotatably connected to one end of the bottom of the third threaded rod (507). The outer wall of the third threaded rod (507) is threadedly connected to the top of the second connecting pipe (503), and a rotating disk (508) is welded to the top of the third threaded rod (507).

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