Special gas supply cabinet anti-leakage structure

Abstract

The utility model is suitable for the technical field of special gas supply cabinet, provides a special gas supply cabinet anti -leak structure, including the cabinet body, the upper end fixedly connected with fixed plate of cabinet body inner wall, one end of fixed plate is provided with movable plate, the upper fixedly connected with the baffle of fixed plate, the exhaust pump fixed connection in one side of cabinet body, cabinet body inner wall between baffle and fixed plate is fixedly connected with air pressure sensor and gas monitor respectively, the other side of cabinet body is fixedly connected with air inlet pipe and pressure relief pipe respectively. The special gas supply cabinet anti -leak structure provided in the scheme utilizes baffle, movable plate and fixed plate, so that the leakage space is smaller, utilizes two gas monitors of upper and lower simultaneously, is convenient for more comprehensive detection to this space, and then is convenient for more convenient monitoring of heavier and lighter gas, and the leaked gas can be discharged after monitoring, avoids the security risk caused by too much leakage.

Description

Technical Field

[0001] This utility model belongs to the technical field of special gas supply cabinets, and in particular relates to a leak-proof structure for a special gas supply cabinet. Background Technology

[0002] Special gas supply cabinets are specially designed for storing and supplying flammable, explosive, corrosive, or toxic special gases. To ensure safety, the valves and other pipelines in the cabinet are sealed using appropriate sealing structures. However, there is still a possibility of leakage due to seal failure after long-term use. Therefore, to avoid such leakage, it is necessary to monitor for gas leaks.

[0003] Chinese patent CN221463619U discloses a special gas cabinet with leakage detection function. The patent states that it includes a cabinet body, a main negative pressure pipe, and sub-pipes. The main negative pressure pipe is connected to the cabinet body. Multiple sub-pipes are provided, each connected to the main negative pressure pipe. A selector valve is provided between the sub-pipes and the main negative pressure pipe, electrically connected to a control terminal, and used to control the on / off state of the sub-pipes and the main negative pressure pipe. A gas detector is installed on the main negative pressure pipe. This application improves the accuracy of gas leakage detection in special gas cabinets.

[0004] However, the above-mentioned solutions have poor leak detection performance. They monitor leaks by evacuating air under negative pressure, but continuous negative pressure evacuation will increase unnecessary energy consumption. At the same time, evacuation also requires the entry of external gas, which will result in poor cabinet sealing. Intermittent evacuation will not be able to collect and detect leaked gas in time when a leak occurs due to the large internal space of the cabinet. Therefore, it is necessary to design a leak-proof structure for a special gas supply cabinet. Utility Model Content

[0005] This utility model provides a leak-proof structure for a special gas supply cabinet, aiming to solve the problem that some leak-proof structures currently in use have poor leak-proof monitoring effects.

[0006] This utility model is implemented as follows: a leak-proof structure for a special gas supply cabinet includes a cabinet body; a sealed door fixedly connected to the front of the cabinet body via hinges; a fixed plate fixedly connected to the upper end of the inner wall of the cabinet body; a movable plate provided at one end of the fixed plate; and an upper partition fixedly connected above the fixed plate; an installation assembly mounted on one side of the bottom end of the movable plate, used to install and fix the movable plate to the inner wall of the cabinet body; gas cylinders evenly spaced on the bottom wall of the inner wall of the cabinet body, the top of the gas cylinders extending between the movable plate and the fixed plate; a connecting pipe fixedly connected to the top of the fixed plate, penetrating the upper partition; a sealing assembly mounted on the upper partition, used to seal the surface of the connecting pipe between the upper partition and the upper partition; a suction pump fixedly connected to one side of the cabinet body, one end of the suction pump communicating with the interior of the cabinet body; a pressure sensor and a gas monitor fixedly connected to the inner wall of the cabinet body between the upper partition and the fixed plate; and an inlet pipe and a pressure relief pipe fixedly connected to the other side of the cabinet body, one end of the inlet pipe and the pressure relief pipe communicating with the interior of the cabinet body.

[0007] Preferably, the sealing assembly includes: cavities equally spaced on the upper partition, a sealing airbag fixedly connected to the middle position of the inner wall of the cavity, one side of the plurality of sealing airbags being connected through a conduit, a connecting pipe fixedly connected to one side of the cabinet, one end of the connecting pipe being connected to the interior of one of the sealing airbags; and a sealing ring fixedly connected to the upper and lower ends of the inner wall of the sealing airbag.

[0008] Preferably, the lower end of the inner wall of the sealing ring is inclined, and the sealing ring is O-shaped.

[0009] Preferably, a sealing gasket is fixedly connected to the inner wall of the movable plate and the fixed plate, and the sealing gasket is semi-circular in shape.

[0010] Preferably, the mounting assembly includes: a fixing groove symmetrically formed on both sides of the bottom end of the movable plate, with a sliding rod fixedly connected to the inner wall of the fixing groove; a sliding block slidably connected to the surface of the sliding rod, with an installation rod fixedly connected to the lower end of one side of the sliding block, and an installation spring wound around the surface of the sliding rod, with both ends of the installation spring fixedly connected to one side of the sliding block and the inner wall of the fixing groove, respectively; and mounting holes symmetrically formed on the inner wall of the cabinet.

[0011] Preferably, one end of the mounting rod forms an engaging structure with the interior of the mounting hole, and the distance between one side of the sliding block and the inner wall of the fixing groove is greater than the depth of the interior of the mounting hole.

[0012] Preferably, the movable plate has locking blocks fixedly connected to both sides of its back, and the fixed plate has locking slots on both sides of its front that engage with the locking blocks.

[0013] Preferably, a dustproof structure is provided on one side of the cabinet. The dustproof structure prevents external dust and other impurities from entering the interior of the cabinet through the air inlet pipe. The dustproof structure includes: a fixed frame symmetrically and fixedly connected to one side of the cabinet; and a dustproof net movably connected inside the fixed frame.

[0014] Preferably, the dustproof net and the interior of the fixed frame form an interlocking structure, and the cross-sectional area of ​​the dustproof net is larger than the cross-sectional area of ​​the air intake pipe.

[0015] Compared with related technologies, the leak-proof structure for the special gas supply cabinet provided by this utility model has the following advantages:

[0016] 1. The space formed by the upper partition, movable plate, and fixed plate is relatively small and covers the valve area connecting all connecting pipes and gas cylinders. At the same time, the sealing component improves the sealing between the connecting pipe and the upper partition, and the sealing gasket improves the sealing between the movable plate and the fixed plate and the surface of the gas cylinder, preventing leaked gas from being sealed into other spaces inside the cabinet. Therefore, the small space makes it easier for leaked gas to be detected by the gas detector, improving its monitoring accuracy. At the same time, when there is a gas leak, the leaked gas can be discharged in time, improving its safety in use.

[0017] 2. By utilizing the engagement between the locking block and the slot, the movable plate and the fixed plate are initially engaged and fixed. Then, through the set installation components, the movable plate and the fixed plate can be quickly disassembled and assembled. This makes it easy to remove the movable plate when replacing the gas cylinder, thus facilitating the quick disassembly and assembly of the gas cylinder and improving its practicality. Attached Figure Description

[0018] Figure 1 This is a frontal cross-sectional view of the present invention.

[0019] Figure 2 This is a bottom view of the structure of this utility model;

[0020] Figure 3 This is a partial cross-sectional exploded structural diagram of the pressure relief pipe and air intake pipe of this utility model.

[0021] Figure 4 This is a bottom-view partial exploded structural diagram of the fixed plate and movable plate of this utility model;

[0022] Figure 5 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0023] In the diagram: 1. Connecting pipe; 2. Upper partition; 3. Sealing assembly; 301. Connecting pipe; 302. Cavity; 303. Sealing airbag; 304. Sealing ring; 4. Cabinet; 5. Air pump; 6. Movable plate; 7. Gas tank; 8. Pressure sensor; 9. Gas monitor; 10. Fixing frame; 11. Dustproof net; 12. Sealing door; 13. Fixing plate; 14. Mounting assembly; 1401. Mounting hole; 1402. Mounting rod; 1403. Sliding block; 1404. Mounting spring; 1405. Slide rod; 1406. Fixing groove; 15. Air inlet pipe; 16. Pressure relief pipe; 17. Sealing gasket; 18. Slot; 19. Locking block. Detailed Implementation

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0025] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] Example 1

[0027] A preferred embodiment of the leak-proof structure for the special gas supply cabinet provided by this utility model is, for example... Figures 1 to 5The following describes a leak-proof structure for a special gas supply cabinet: a cabinet body 4; a sealing door 12 fixedly connected to the front of the cabinet body 4 via hinges; a fixing plate 13 fixedly connected to the upper end of the inner wall of the cabinet body 4; a movable plate 6 provided at one end of the fixing plate 13; an upper partition plate 2 fixedly connected above the fixing plate 13; an installation assembly 14 assembled on one side of the bottom end of the movable plate 6, used to install and fix the movable plate 6 to the inner wall of the cabinet body 4; and gas cylinders 7 evenly spaced on the bottom wall of the inner wall of the cabinet body 4, with the top of the gas cylinders 7 extending between the movable plate 6 and the fixing plate 13. The top of the 13 is fixedly connected to a connecting pipe 1 that passes through the upper partition 2; a sealing component 3 is assembled on the upper partition 2, which is used to achieve a seal between the surface of the connecting pipe 1 and the upper partition 2; an air pump 5 is fixedly connected to one side of the cabinet 4, one end of the air pump 5 is connected to the inside of the cabinet 4; a pressure sensor 8 and a gas monitor 9 are fixedly connected to the inner wall of the cabinet 4 between the upper partition 2 and the fixed plate 13; an air inlet pipe 15 and a pressure relief pipe 16 are fixedly connected to the other side of the cabinet 4, one end of the air inlet pipe 15 and the pressure relief pipe 16 are connected to the inside of the cabinet 4.

[0028] It should be noted that some existing special gas supply cabinet leak-proof structures still have certain shortcomings in actual use. The comparison document uses negative pressure evacuation for monitoring, but continuous negative pressure evacuation will increase unnecessary energy consumption. At the same time, evacuation also requires the entry of external gas, which will make the sealing of cabinet 4 poor. Intermittent evacuation, on the other hand, will not be able to collect and detect the leaked gas in time when a leak occurs due to the large internal space of cabinet 4.

[0029] In this embodiment, the device is connected to the existing controller on the cabinet 4. The space formed by the upper partition 2, the movable plate 6, and the fixed plate 13 is relatively small and covers the valve area connecting all the connecting pipes 1 and the gas tank 7. The sealing component 3 is used to improve the sealing between the connecting pipe 1 and the upper partition 2, and the sealing gasket 17 is used to improve the sealing between the movable plate 6 and the fixed plate 13 and the surface of the gas tank 7, preventing leaked gas from being sealed into other spaces inside the cabinet 4. Therefore, the smaller space makes it easier for the gas detector 9 to detect leaked gas, improving its monitoring accuracy. When there is a gas leak, the vacuum pump 5 and the valve on the inlet pipe 15 can be activated to draw in external gas and discharge the leaked gas, reducing the concentration of the leaked gas. An alarm is triggered by the existing controller on the cabinet 4. When too much gas leaks, the pressure sensor 8 detects the increased air pressure in the space and opens the valve on the pressure relief pipe 16 to release the excess gas in time, improving its safety.

[0030] In a further preferred embodiment of the present invention, the sealing component 3 includes: cavities 302 equally spaced on the upper partition plate 2, a sealing airbag 303 fixedly connected at the middle position of the inner wall of the cavity 302, one side of the plurality of sealing airbags 303 being connected through a conduit, a connecting pipe 301 fixedly connected to one side of the cabinet 4, one end of the connecting pipe 301 being connected to the interior of one of the sealing airbags 303; and sealing rings 304 fixedly connected to the upper and lower ends of the inner wall of the sealing airbag 303.

[0031] In this embodiment, the sealing ring 304 is used to improve the sealing performance between the connecting pipe 1 and the inner wall of the cavity 302. At the same time, external air is blown in through the connecting pipe 301, so that the sealing airbag 303 expands and further adheres tightly to the surface of the connecting pipe 1. Thus, the sealing performance between the connecting pipe 1 and the cavity 302 can be improved through double sealing, preventing gas from leaking to the top of the upper partition 2.

[0032] In a further preferred embodiment of the present invention, the lower end of the inner wall of the sealing ring 304 is inclined, and the shape of the sealing ring 304 is O-shaped.

[0033] In this embodiment, the use of a beveled sealing ring 304 facilitates the connection between the connecting pipe 1 and the interior of the cavity 302.

[0034] In a further preferred embodiment of the present invention, a sealing gasket 17 is fixedly connected to the inner wall of the movable plate 6 and the fixed plate 13, and the sealing gasket 17 is semi-circular in shape.

[0035] In this embodiment, a semi-circular sealing gasket 17 is used to improve the sealing between the movable plate 6 and the fixed plate 13 and the surface of the gas tank 7.

[0036] Example 2

[0037] Based on Embodiment 1, a preferred embodiment of the leak-proof structure for the special gas supply cabinet provided by this utility model is as follows: Figures 1 to 5 As shown: The mounting assembly 14 includes: a fixing groove 1406 symmetrically opened on both sides of the bottom end of the movable plate 6, and a slide rod 1405 fixedly connected to the inner wall of the fixing groove 1406; a sliding block 1403 slidably connected to the surface of the slide rod 1405, an installation rod 1402 fixedly connected to the lower end of one side of the sliding block 1403, an installation spring 1404 wound around the surface of the slide rod 1405, and the two ends of the installation spring 1404 being fixedly connected to one side of the sliding block 1403 and the inner wall of the fixing groove 1406 respectively; and mounting holes 1401 symmetrically opened on the inner wall of the cabinet 4.

[0038] In a further preferred embodiment of the present invention, one end of the mounting rod 1402 forms an engaging structure with the interior of the mounting hole 1401, and the distance between one side of the sliding block 1403 and the inner wall of the fixing groove 1406 is greater than the depth of the interior of the mounting hole 1401.

[0039] In this embodiment, by moving the sliding block 1403, the mounting rod 1402 is slid and the mounting spring 1404 is compressed. Then, the movable plate 6 can be pulled to separate it from the fixed plate 13, which facilitates the quick replacement or maintenance of the gas tank 7. During installation, the sliding block 1403 is moved first, and then the movable plate 6 is brought into contact with the fixed plate 13. Then, the sliding block 1403 is released, and the elastic force of the mounting spring 1404 is used to make the sliding block 1403 slide, causing the mounting rod 1402 to slide and compress the inside of the mounting hole 1401, thereby achieving a firm installation between the movable plate 6 and the fixed plate 13.

[0040] In a further preferred embodiment of the present invention, the two sides of the back of the movable plate 6 are fixedly connected with the locking blocks 19, and the two sides of the front of the fixed plate 13 are provided with locking grooves 18 that engage with the locking blocks 19.

[0041] In this embodiment, the engagement between the locking block 19 and the slot 18 improves the stability of the initial engagement between the movable plate 6 and the fixed plate 13.

[0042] In a further preferred embodiment of this utility model, a dustproof structure is provided on one side of the cabinet 4. The dustproof structure prevents external dust and other impurities from entering the interior of the cabinet 4 through the air inlet pipe 15. The dustproof structure includes: a fixed frame 10 symmetrically and fixedly connected to one side of the cabinet 4; and a dustproof net 11 movably connected inside the fixed frame 10.

[0043] In a further preferred embodiment of the present invention, the dustproof net 11 and the interior of the fixing frame 10 form an interlocking structure, and the cross-sectional area of ​​the dustproof net 11 is larger than the cross-sectional area of ​​the air inlet pipe 15.

[0044] In this embodiment, a dustproof net 11 is used to shield the air intake pipe 15 from dust, and the dustproof net 11 is engaged with the fixing frame 10, which facilitates the disassembly and cleaning of the dustproof net 11.

[0045] In summary, the use of the upper partition 2, the movable plate 6, and the fixed plate 13 makes the leakage space smaller. At the same time, the use of two gas detectors 9 at the top and bottom facilitates more comprehensive detection of this space, and thus makes it easier to monitor heavier and lighter gases.

[0046] It is worth noting that the circuits, electronic components, and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0047] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative; the division of units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; the indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0048] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A leak-proof structure for a special gas supply cabinet, characterized in that, include: Cabinet (4); A sealing door (12) is fixedly connected to the front of the cabinet (4) by a hinge. A fixing plate (13) is fixedly connected to the upper end of the inner wall of the cabinet (4). A movable plate (6) is provided at one end of the fixing plate (13). An upper partition (2) is fixedly connected above the fixing plate (13). The mounting assembly (14) is assembled on one side of the bottom end of the movable plate (6), and the mounting assembly (14) is used to fix the movable plate (6) to the inner wall of the cabinet (4); Gas cylinders (7) are evenly spaced on the bottom wall of the cabinet (4). The top of the gas cylinders (7) extends between the movable plate (6) and the fixed plate (13). A connecting pipe (1) that penetrates the upper partition (2) is fixedly connected to the top of the fixed plate (13). A sealing assembly (3) is mounted on the upper partition (2), the sealing assembly (3) being used to achieve a seal between the surface of the connecting pipe (1) and the upper partition (2); An air pump (5) is fixedly connected to one side of the cabinet (4). One end of the air pump (5) is connected to the interior of the cabinet (4). A pressure sensor (8) and a gas monitor (9) are fixedly connected to the inner wall of the cabinet (4) between the upper partition (2) and the fixed plate (13). An air inlet pipe (15) and a pressure relief pipe (16) are fixedly connected to the other side of the cabinet (4). One end of the air inlet pipe (15) and the pressure relief pipe (16) are connected to the interior of the cabinet (4).

2. The leak-proof structure of the special gas supply cabinet as described in claim 1, characterized in that, The sealing assembly (3) includes: A cavity (302) is equally spaced on the upper partition (2). A sealing airbag (303) is fixedly connected to the middle position of the inner wall of the cavity (302). One side of the multiple sealing airbags (303) is connected through a conduit. A connecting pipe (301) is fixedly connected to one side of the cabinet (4). One end of the connecting pipe (301) is connected to the inside of one of the sealing airbags (303). A sealing ring (304) is fixedly connected to the upper and lower ends of the inner wall of the sealing airbag (303).

3. The leak-proof structure of the special gas supply cabinet as described in claim 2, characterized in that, The lower end of the inner wall of the sealing ring (304) is inclined, and the sealing ring (304) is O-shaped.

4. The leak-proof structure of the special gas supply cabinet as described in claim 1, characterized in that, The inner walls of the movable plate (6) and the fixed plate (13) are fixedly connected with a sealing gasket (17), which is semi-circular in shape.

5. The leak-proof structure of the special gas supply cabinet as described in claim 1, characterized in that, The installation component (14) includes: A fixing groove (1406) is symmetrically opened on both sides of the bottom end of the movable plate (6), and a sliding rod (1405) is fixedly connected to the inner wall of the fixing groove (1406). A sliding block (1403) is slidably connected to the surface of the slide rod (1405). A mounting rod (1402) is fixedly connected to the lower end of one side of the sliding block (1403). A mounting spring (1404) is wound around the surface of the slide rod (1405). The two ends of the mounting spring (1404) are fixedly connected to one side of the sliding block (1403) and the inner wall of the fixing groove (1406), respectively. Mounting holes (1401) are symmetrically opened on the inner wall of the cabinet (4).

6. The leak-proof structure of the special gas supply cabinet as described in claim 5, characterized in that, One end of the mounting rod (1402) forms a locking structure with the interior of the mounting hole (1401), and the distance between one side of the sliding block (1403) and the inner wall of the fixing groove (1406) is greater than the depth of the interior of the mounting hole (1401).

7. The leak-proof structure of the special gas supply cabinet as described in claim 1, characterized in that, The movable plate (6) has two fixed connections to the back sides of the plate (6), and the fixed plate (13) has slots (18) on the front sides that engage with the slots (19).

8. The leak-proof structure of the special gas supply cabinet as described in claim 1, characterized in that, A dustproof structure is provided on one side of the cabinet (4). The dustproof structure prevents external dust and other impurities from entering the interior of the cabinet (4) through the air inlet pipe (15). The dustproof structure includes: A fixed frame (10) is symmetrically fixedly connected to one side of the cabinet (4); The dustproof net (11) is movably connected inside the fixed frame (10).

9. The leak-proof structure of the special gas supply cabinet as described in claim 8, characterized in that, The dustproof net (11) and the interior of the fixed frame (10) form a snap-fit ​​structure, and the cross-sectional area of ​​the dustproof net (11) is larger than the cross-sectional area of ​​the air inlet pipe (15).

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