Low-pressure ball type gas storage cabinet

Abstract

The utility model relates to the technical field of gas storage cabinets, and discloses a low-pressure ball type gas storage cabinet which comprises a base, a lower outer film and an inner film are arranged on the outer surface of the top of the base, an upper outer film is arranged on the top of the lower outer film, the inner film is arranged in the lower outer film, the outer portions of the upper outer film and the lower outer film are both fixedly connected with connecting discs, and the connecting discs are fixedly connected with the base. And through grooves are formed in the positions, located on the front sides and the rear sides of the connecting holes, of the two connecting discs correspondingly, the outer surface of the bottom of one of the multiple through grooves fixedly communicates with an expansion air bag, a pressure sensor is fixedly installed on the outer surface of the connecting plate, and an audible and visual alarm is installed on the side, away from the pressure sensor, of the connecting plate. When the sealing performance between the upper outer film and the lower outer film leaks, the air pressure extrudes the expansion air bag to enable the air bag to expand, the air bag enables the pressure sensor to sense a numerical value and send a signal to the controller, the controller controls the audible and visual alarm to work, and a maintainer is reminded to detect the sealing performance in time.

Description

Technical Field

[0001] The utility model relates to the technical field of gas storage cabinets, in particular to a low-pressure ball-type gas storage cabinet. Background Art

[0002] Due to its low pressure, low-pressure gas cannot be stored in a fixed-volume gas tank and can only be stored in a variable-space-volume manner. Generally, a double-membrane gas tank is used for storage. The double-membrane gas tank forms two spaces through the bottom membrane, inner membrane and outer membrane. The inner membrane space is used as a gas storage space to store various gases, and the space between the outer membrane and the inner membrane is used as a pressure regulating space. By balancing the pressure in the tank, the stiffness of the outer membrane is stabilized.

[0003] In order to facilitate the maintenance of gas storage tank components, a manhole is usually opened on the surface of the outer membrane, or the outer membrane is set into two independent and detachable parts. This method may cause leakage of the outer membrane, resulting in the inability to stably regulate the pressure in the sandwich pressure regulating space between the outer membrane and the inner membrane. When there is a problem with the sealing, it is impossible to remind the maintenance personnel to perform maintenance. Therefore, a low-pressure ball-type gas storage tank is proposed. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a low-pressure spherical gas storage cabinet to solve the problems mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a low-pressure spherical gas storage cabinet, comprising a base, a top outer surface of the base is provided with a lower outer membrane and an inner membrane, the top of the lower outer membrane is provided with an upper outer membrane, the inner membrane is arranged inside the lower outer membrane, and the outer surfaces of the upper outer membrane and the lower outer membrane are fixedly connected to a connecting plate. The outer surfaces of the connecting plates are provided with a connecting hole, and connecting bolts are provided in the connecting holes corresponding to the two connecting plates. The outer surfaces of the connecting bolts are threadedly connected with nuts, and the two connecting plates are provided with through grooves on the front and rear sides of the connecting hole, and the connecting plates are provided with arc grooves on the left and right sides of the connecting hole, and several of the through grooves are connected through the arc grooves, and the bottom outer surfaces of several of the through grooves are fixedly connected with an expansion air bag, and the lower outer membrane is fixedly connected to a connecting plate corresponding to the expansion air bag, and a pressure sensor is fixedly installed on the outer surface of the connecting plate, and an audible and visual alarm is installed on the side of the connecting plate away from the pressure sensor, and the pressure sensor and the audible and visual alarm are both electrically connected to an external controller.

[0006] Furthermore, the top outer surface of the upper outer membrane is fixedly connected to a pressure relief cylinder, a movable rod is movably inserted into the top outer surface of the pressure relief cylinder, a piston disk is fixedly connected to the bottom outer surface of the movable rod, the piston disk is movably connected to the inner wall of the pressure relief cylinder, a spring is fixedly connected between the piston disk and the top inner surface of the pressure relief cylinder, the spring is sleeved on the outer surface of the movable rod, a pressure relief hole is opened on the outer surface of the pressure relief cylinder, and the piston disk is located below the pressure relief hole.

[0007] Furthermore, a mounting plate is fixedly connected to the right outer surface of the base, a blower is fixedly installed on the top outer surface of the mounting plate, an output end of the blower is fixedly connected to an air supply pipe, and the air supply pipe is fixedly connected to the interior of the lower outer membrane.

[0008] Furthermore, the inner surface of the inner membrane is fixedly connected to a regulating tube, and the other end of the regulating tube passes through the outer surface of the lower outer membrane.

[0009] Furthermore, the inner wall of the lower outer membrane is fixedly connected to an airbag tube at the connection between the upper outer membrane and the lower outer membrane, the upper outer membrane is movably fitted with the outer surface of the airbag tube, the outer surface of the airbag tube is fixedly connected to an inflation tube, and the other end of the inflation tube passes through the outer surface of the lower outer membrane.

[0010] Furthermore, sealing gaskets are provided on both sides of the through groove of the two connecting plates, and sealing rings are provided on the outside of the two connecting plates.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. When a leak occurs in the sealing between the upper outer membrane and the lower outer membrane of the low-pressure spherical gas storage cabinet, the air pressure squeezes and expands the airbag, causing the airbag to expand. The airbag causes the pressure sensor to sense the value and send a signal to the controller. The controller controls the sound and light alarm to work, reminding maintenance personnel to check the sealing in time.

[0013] 2. When the low-pressure spherical gas storage cabinet is inflated through the inner membrane, the pressure between the outer membrane and the inner membrane increases, and the pressure squeezes the piston disk, making the pressure relief hole conductive, and the air is discharged from the pressure relief hole. When the gas in the inner membrane is discharged, the blower works at the same time, and the blower generates wind force into the pressure regulating space to maintain the pressure balance between the outer membrane and the inner membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the pressure relief cylinder of the utility model;

[0017] Figure 4 For this utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0018] In the figure: 1. Base; 2. Lower outer membrane; 3. Upper outer membrane; 4. Inner membrane; 5. Pressure relief cylinder; 6. Spring; 7. Piston disc; 8. Pressure relief hole; 9. Movable rod; 10. Blower; 11. Air supply pipe; 12. Connecting disc; 13. Connecting bolt; 14. Through groove; 15. Inflatable airbag; 16. Connecting plate; 17. Pressure sensor; 18. Sound and light alarm; 19. Airbag tube. DETAILED DESCRIPTION

[0019] 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 embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example 1:

[0021] Please refer to Figures 1-4The utility model provides a technical solution: a low-pressure spherical gas storage cabinet, including a base 1, a lower outer membrane 2 and an inner membrane 4 are provided on the top outer surface of the base 1, an upper outer membrane 3 is provided on the top of the lower outer membrane 2, and the inner membrane 4 is provided inside the lower outer membrane 2, and the outer sides of the upper outer membrane 3 and the lower outer membrane 2 are fixedly connected with a connecting plate 12, and the outer surfaces of the connecting plates 12 are provided with connecting holes, and connecting bolts 13 are provided in the connecting holes corresponding to the two connecting plates 12. The outer surfaces of the connecting bolts 13 are threadedly connected with nuts, and the two connecting plates 12 are provided with through grooves 14 on the front and rear sides of the connecting holes, and the connecting plates 12 are provided with arc grooves on the left and right sides of the connecting holes, and several through grooves 14 are connected through the arc grooves, and the bottom outer surfaces of several of the through grooves 14 are fixedly connected with an expansion air bag 15, and the lower outer membrane 2 is fixedly connected with a connecting plate 16 at the corresponding position of the expansion air bag 15. A pressure sensor 17 is fixedly installed on the outer surface of the connecting plate 16, and an audible and visual alarm 18 is installed on the side of the connecting plate 16 away from the pressure sensor 17. The pressure sensor 17 and the audible and visual alarm 18 are both electrically connected to the external controller. Specifically, the connecting plates 12 of the upper outer membrane 3 and the lower outer membrane 2 are aligned, and the two connecting plates 12 are connected by the connecting bolts 13. The sealing performance of the two connecting plates 12 after splicing is increased by a sealing gasket, and then a sealing ring is installed on the outside of the connecting plate 12 to further increase the sealing performance. If a leak occurs at the connecting plate 12, the gas enters the through groove 14 at this time, and the expansion airbag 15 is expanded by the air and squeezes the pressure sensor 17. The pressure sensor 17 senses the value and sends it to the external controller. The controller receives the signal to make the audible and visual alarm 18 sound an alarm, promptly reminding the maintenance personnel to detect and repair the sealing.

[0022] In this embodiment, the top outer surface of the upper outer membrane 3 is fixedly connected to the pressure relief cylinder 5, and a movable rod 9 is movably inserted into the top outer surface of the pressure relief cylinder 5. The bottom outer surface of the movable rod 9 is fixedly connected to a piston disk 7. The piston disk 7 is movably connected to the inner wall of the pressure relief cylinder 5. A spring 6 is fixedly connected between the piston disk 7 and the top inner surface of the pressure relief cylinder 5. The spring 6 is sleeved on the outer surface of the movable rod 9. A pressure relief hole 8 is opened on the outer surface of the pressure relief cylinder 5, and the piston disk 7 is located below the pressure relief hole 8. Specifically, the gas is stored in the inner membrane 4. When the gas stored in the inner membrane 4 increases, the inner membrane 4 expands and rises due to inflation. At this time, the pressure inside the outer membrane increases, and the piston disk 7 is squeezed under the action of pressure, so that the spring 6 is compressed, and the piston disk 7 moves to the pressure relief hole 8. The excess gas in the pressure regulating space is discharged from the inside of the outer membrane through the pressure relief hole 8.

[0023] In this embodiment, a mounting plate is fixedly connected to the right outer surface of the base 1, a blower 10 is fixedly installed on the top outer surface of the mounting plate, and the output end of the blower 10 is fixedly connected to an air supply pipe 11, and the air supply pipe 11 is fixedly connected to the interior of the lower outer membrane 2. Specifically, when the gas of the inner membrane 4 is discharged, the blower 10 works at the same time, and the blower 10 generates wind force into the pressure regulating space to maintain the pressure balance between the outer membrane and the inner membrane 4.

[0024] In this embodiment, the inner surface of the inner membrane 4 is fixedly connected to a regulating tube, and the other end of the regulating tube passes through the outer surface of the lower outer membrane 2. Specifically, the regulating tube is used to inflate the inner membrane 4 or discharge the gas in the inner membrane 4.

[0025] In this embodiment, the inner wall of the lower outer membrane 2 is fixedly connected to the airbag tube 19 at the connection between the upper outer membrane 3 and the lower outer membrane 2. The upper outer membrane 3 is movably fitted with the outer surface of the airbag tube 19. The outer surface of the airbag tube 19 is fixedly connected to an inflation tube. The other end of the inflation tube passes through the outer surface of the lower outer membrane 2. Specifically, air is inflated into the interior of the airbag tube 19 through the inflation tube, so that the airbag tube 19 expands, and the airbag tube 19 increases the sealing between the inner wall of the upper outer membrane 3 and the lower outer membrane 2.

[0026] In this embodiment, two connecting plates 12 are provided with sealing gaskets on both sides of the through groove 14, and sealing rings are provided on the outside of the two connecting plates 12. Specifically, the sealing gaskets are used to increase the sealing performance of the two connecting plates 12 after splicing, and then the sealing rings are installed on the outside of the connecting plates 12 to further increase the sealing performance.

[0027] Working principle: When the present invention is in use, the connecting plates 12 of the upper outer membrane 3 and the lower outer membrane 2 are aligned, and the two connecting plates 12 are connected by the connecting bolts 13. The sealing gasket is used to increase the sealing of the two connecting plates 12 after splicing. Then, a sealing ring is used to be installed on the outside of the connecting plate 12 to further increase the sealing. If a leak occurs at the connecting plate 12, the gas enters the through groove 14, the expansion airbag 15 is expanded by the air, and squeezes the pressure sensor 17. The pressure sensor 17 senses the value and sends it to the external controller. The controller receives the signal, causing the sound and light alarm 18 to sound an alarm, promptly reminding the maintenance personnel to detect and repair the sealing.

[0028] The gas is stored in the inner membrane 4. When the gas stored in the inner membrane 4 increases, the inner membrane 4 expands and rises due to inflation. At this time, the pressure inside the outer membrane increases, and the piston disc 7 is squeezed under the action of pressure, so that the spring 6 is compressed, and the piston disc 7 moves to the pressure relief hole 8. The excess gas in the pressure regulating space is discharged from the inside of the outer membrane through the pressure relief hole 8. When the gas in the inner membrane 4 is discharged, the blower 10 works at the same time, and the blower 10 generates wind force into the pressure regulating space to maintain the pressure balance between the outer membrane and the inner membrane 4.

[0029] The controller is an existing structure, and the control circuit can be implemented by simple programming by technicians in this field. It is common knowledge in this field and is only used without modification. Therefore, the control method and circuit connection will not be described in detail.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-pressure spherical gas storage cabinet, comprising a base (1), characterized in that: The top outer surface of the base (1) is provided with a lower outer membrane (2) and an inner membrane (4), the top of the lower outer membrane (2) is provided with an upper outer membrane (3), the inner membrane (4) is provided inside the lower outer membrane (2), the outer sides of the upper outer membrane (3) and the lower outer membrane (2) are fixedly connected with a connecting plate (12), the outer surfaces of the connecting plates (12) are provided with connecting holes, the corresponding connecting holes of the two connecting plates (12) are provided with connecting bolts (13), the outer surfaces of the connecting bolts (13) are threadedly connected with nuts, and the two connecting plates (12) are provided with through grooves (14) on the front and rear sides of the connecting holes. The connecting plate (12) is provided with arc grooves on both sides of the connecting hole, and a plurality of through grooves (14) are connected through the arc grooves. The bottom outer surface of one of the through grooves (14) is fixedly connected with an expansion airbag (15). The lower outer membrane (2) is fixedly connected with a connecting plate (16) at a position corresponding to the expansion airbag (15). A pressure sensor (17) is fixedly installed on the outer surface of the connecting plate (16). A sound and light alarm (18) is installed on the side of the connecting plate (16) away from the pressure sensor (17). Both the pressure sensor (17) and the sound and light alarm (18) are electrically connected to an external controller.

2. A low-pressure spherical gas holder according to claim 1, characterized in that: The top outer surface of the upper outer membrane (3) is fixedly connected to a pressure relief cylinder (5), the top outer surface of the pressure relief cylinder (5) is movably inserted with a movable rod (9), the bottom outer surface of the movable rod (9) is fixedly connected to a piston disc (7), the piston disc (7) is movably connected to the inner wall of the pressure relief cylinder (5), a spring (6) is fixedly connected between the piston disc (7) and the top inner surface of the pressure relief cylinder (5), the spring (6) is sleeved on the outer surface of the movable rod (9), a pressure relief hole (8) is opened on the outer surface of the pressure relief cylinder (5), and the piston disc (7) is located below the pressure relief hole (8).

3. The low-pressure spherical gas holder according to claim 1, characterized in that: The right outer surface of the base (1) is fixedly connected to a mounting plate, the top outer surface of the mounting plate is fixedly mounted with a blower (10), the output end of the blower (10) is fixedly connected to an air supply pipe (11), and the air supply pipe (11) is fixedly connected to the interior of the lower outer membrane (2).

4. The low-pressure spherical gas holder according to claim 1, characterized in that: The inner surface of the inner membrane (4) is fixedly connected to a regulating tube, and the other end of the regulating tube passes through the outer surface of the lower outer membrane (2).

5. The low-pressure spherical gas holder according to claim 1, characterized in that: The inner wall of the lower outer membrane (2) is fixedly connected to an air bag tube (19) at the connection between the upper outer membrane (3) and the lower outer membrane (2), and the upper outer membrane (3) is movably fitted with the outer surface of the air bag tube (19). The outer surface of the air bag tube (19) is fixedly connected to an inflation tube, and the other end of the inflation tube passes through the outer surface of the lower outer membrane (2).

6. The low-pressure spherical gas holder according to claim 1, characterized in that: The two connecting plates (12) are provided with sealing pads on both sides of the through groove (14), and the outsides of the two connecting plates (12) are provided with sealing rings.

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