A prefabricated non-welded assembled safe and durable storage device for compressed gas

Abstract

The present invention belongs to the technical field of gas storage equipment, and discloses a prefabricated non-welded assembled safe and durable storage device for compressed gas, including a storage container, an airtight door and an airtight valve are connected to the storage container, a heat exchanger and a temperature control device are connected to the airtight valve, and the storage container includes a skeleton, and the top and bottom of the skeleton are respectively connected to a protective shell and a base; a support is provided on the outside of the skeleton; the protective shell includes a tough inner thin shell and an outer shell; the tough inner thin shell is connected to the inner side of the skeleton, and the outer shell is connected to the outer side of the skeleton. The prefabricated components used in the present invention are produced in a factory in a mechanized manner, with high formula accuracy, sufficient curing time, and stable component materials, which overcome the problems of unstable formula, uneven mixing, and poor curing conditions when concrete is cast in situ.

Description

Technical Field

[0001] The present invention belongs to the technical field of gas storage equipment, and in particular relates to a prefabricated non-welded assembled safe and durable storage device for compressed gas. Background Art

[0002] Compressed gas refers to gas that is completely gaseous when pressurized at -50°C, including gas with a critical temperature lower than or equal to -50°C. There are four existing solutions for the storage of compressed gas:

[0003] 1. Steel cylinder gas cylinder: welded gas cylinder is made of cylindrical cylinder body welded by thin steel plate and end caps at both ends; pipe gas cylinder is seamless gas cylinder made of seamless steel pipe. The end caps at both ends are formed by heating the steel pipe and placing it on a special machine tool through spinning or extrusion; punching and stretching gas cylinder is to punch out a concave end cap after heating the steel ingot, then draw it into an open bottle blank, and then make the top end cap and interface pipe according to the method of pipe gas cylinder; winding gas cylinder is composed of aluminum inner cylinder and a certain thickness of alkali-free glass fiber wrapped around the outside of the inner cylinder. The function of the aluminum inner cylinder is to ensure the airtightness of the gas cylinder. The pressure strength of the gas cylinder depends on the glass fiber shell wall wrapped into one piece outside the inner cylinder (using epoxy phenolic resin as a binder). The shell fiber material is easy to "age", so the service life is generally not as good as that of steel gas cylinders. 2. Cast-in-place concrete gas storage station: such as liquefied natural gas storage tank, which consists of a steel inner cylinder and a prestressed reinforced concrete cylinder dome. 3. Large metal welding gas storage station: equipment that bears internal and external pressures, with a variety of structural forms, composed of shells, heads, flanges, pipes, supports, etc., all of which need to be assembled into a whole through welding. 4. Gas storage devices for terrain and geological transformation and reinforcement: such as high-pressure gas underground gas storage wells, the pressure-bearing components of high-pressure containers need to be purchased from professional manufacturing units, assembled section by section, and hoisted into the well drilled according to the single well volume of the gas storage well under construction.

[0004] There are four existing gas storage products, and the disadvantages of each product are as follows:

[0005] 1. Steel cylinder gas cylinder: The existing storage device is mainly made of steel. Although it has good pressure resistance, the corrosion resistance of steel is not as good as other non-metallic materials. Therefore, its service life is much lower than that of concrete materials.

[0006] 2. Cast-in-place concrete gas storage station: Cast-in-place devices are affected by the on-site climate, temperature, quality, material, personnel skills and management level. The prefabricated components used in this gas storage device are produced in the factory, the component materials are stable, and the on-site standardized assembly construction work can avoid the above adverse effects;

[0007] 3. Large metal welding gas storage station: The existing large gas storage devices require welding construction surfaces and conditions during the welding process, and sufficient inert gas to ensure the quality of welding. Therefore, the installation working environment and operation surface have high requirements. This gas storage device is assembled with small prefabricated components. The components are small enough to meet various transportation conditions and support physical assembly without welding at normal temperature and pressure;

[0008] 4. Gas storage devices reinforced by terrain and geological transformation: It is difficult to transform rock caves above the ground into airtightness using existing methods. Currently, the transformation of rock caves deep underground is the main focus, so the available terrain is not universal. Summary of the invention

[0009] The object of the present invention is to provide a prefabricated non-welded assembled compressed gas safe and durable storage device to solve the problems in the prior art mentioned in the above background technology.

[0010] To achieve the above object, the present invention adopts the following technical solutions:

[0011] A prefabricated non-welded assembled safe and durable storage device for compressed gas, comprising a storage container, an airtight door and an airtight valve connected to the storage container, a heat exchanger and a temperature control device connected to the airtight valve, the storage container comprising a frame, the top and bottom of the frame are respectively connected to a protective shell and a base; a support member is provided on the outside of the frame;

[0012] The enclosure shell comprises a tough inner thin shell and an outer shell; the tough inner thin shell is connected to the inner side of the frame, and the outer shell is connected to the outer side of the frame.

[0013] Preferably, the skeleton comprises: a straight frame and an arc frame connected to the upper end of the straight frame, and trusses are provided on the inner sides of the straight frame and the arc frame; the straight frame is connected to the base through a node assembly, and the tough inner thin shell is connected to the upper end of the straight frame through a tongue-and-groove groove.

[0014] Preferably, a sealing strip is provided on the inner side of the tongue-and-groove.

[0015] Preferably, the truss includes: a main beam, a cross beam and a supporting beam; the lower end of the main beam is supported on a base, and the upper end thereof is supported on an arc frame; the cross beam is fixed on the main beam, and both ends are supported on the inner side of the arc frame; one end of the supporting beam is fixed on the outside of the main beam, and the other end is supported on the inner side of the arc frame.

[0016] Preferably, the base comprises: a ground cross beam, a ground longitudinal beam and a bottom plate; the ground cross beam and the ground longitudinal beam are both connected to the foundation, the ground cross beam is connected to the ground longitudinal beam, and the bottom plate is connected to the ground cross beam.

[0017] Preferably, the node assembly includes: a connecting groove, a connecting piece and a fastening bolt; the connecting groove is opened at the lower end of the straight frame, the connecting piece is fixed to the upper end of the ground longitudinal beam, and the connecting groove and the connecting piece are both provided with through holes matching the fastening bolts, and the fastening bolts pass through the through holes to fix the connecting groove and the connecting piece.

[0018] Preferably, the support member comprises: a support rod, the lower end of the support rod is hinged on the arc frame, and the support rod is configured as a telescopic structure.

[0019] Preferably, the support rod comprises an internally threaded tube and a screw connected to the internally threaded tube, and a support plate is fixed to the upper end of the screw.

[0020] Preferably, the shell is composed of mortar and blocks.

[0021] Technical effects and advantages of the present invention: The prefabricated non-welded assembled safe and durable storage device for compressed gas proposed by the present invention has the following advantages over the prior art:

[0022] 1. The prefabricated components used in the present invention are produced in a factory in a mechanized manner, with high formula accuracy, sufficient curing time, and stable component materials, which overcomes the problems of unstable formula, uneven mixing, and poor curing conditions when concrete is cast in situ;

[0023] 2. Non-welded mortise and tenon, tongue and groove structures are used for physical connection and assembly at normal temperature and pressure. The construction site does not require high-power power access, inert gas storage tanks and other auxiliary facilities. There are no requirements for the working surface and working environment for installation and welding. It is simple and safe, and has a good service life.

[0024] 3. The storage container proposed in the present invention has no special requirements for the selection of the terrain of the mine cave. An assembled gas storage device can be constructed in the mine cave to form an airtight environment, and then the gap between the device and the rock cave can be filled with mortar and blocks, or the gas storage device and the inner wall of the rock cave can be connected with a rod system to support the force, which can greatly increase the pressure of the stored gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 It is a schematic diagram of a top cross-sectional structure of a storage container of the present invention;

[0027] Figure 3 It is a schematic diagram of a side cross-sectional structure of a storage container of the present invention;

[0028] Figure 4 It is a schematic diagram of the structure of the skeleton of the present invention;

[0029] Figure 5 It is a structural schematic diagram of the truss of the present invention;

[0030] Figure 6 It is a structural schematic diagram of the base of the present invention;

[0031] Figure 7 It is a structural schematic diagram of a node assembly of the present invention;

[0032] Figure 8 It is a schematic structural diagram of the support member of the present invention.

[0033] In the figure: 1. storage container; 101. airtight door; 102. airtight valve; 2. skeleton; 201. straight frame; 202. arc frame; 203. truss; 204. tongue and groove; 205. sealing strip; 206. main beam; 207. cross beam; 208. supporting beam; 3. enclosure; 301. tough inner thin shell; 302. outer shell; 4. base; 401. ground cross beam; 402. ground longitudinal beam; 403. bottom plate; 5. support member; 501. support rod; 502. internal threaded pipe; 503. screw; 504. support plate; 6. node assembly; 601. connecting groove; 602. connecting member; 603. fastening bolt. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying 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, rather than all the embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0035] The present invention provides Figure 1-8 A prefabricated non-welded assembled safe and durable storage device for compressed gas is shown, comprising a storage container 1, to which an airtight door 101 and an airtight valve 102 are connected, and to which a heat exchanger and a temperature control device are connected. When the compressed air storage system is in operation, the air is first compressed, and the pressure and heat energy of the compressed air are separated through the system in the heat exchange device, and the high-pressure gas is stored in the device. When in use, the high-pressure gas is transported out through a pipeline through the valve control of the system. The heat generated by the compressed gas is exported and the safe temperature in the cabin is controlled.

[0036] The storage container 1 includes a frame 2, and the top and bottom of the frame 2 are respectively connected to a protective shell 3 and a base 4. The frame 2, the protective shell 3 and the base 4 constitute the entire storage container 1, which is a large compressed air station and can be applied to special terrains, restricted terrains, and scenes that are not conducive to the loading and unloading of large loading and unloading equipment. It can also be installed; urban reconstruction scenes, special environments with little impact on the surroundings.

[0037] The enclosure 3 includes a tough inner thin shell 301 and an outer shell 302; the tough inner thin shell 301 is connected to the inner side of the frame 2, and the outer shell 302 is connected to the outer side of the frame 2. The tough inner thin shell 301 is installed on the frame by tongue and groove using high-strength and high-toughness concrete prefabricated panels. It is made of high-strength FRP material and high-strength reinforced concrete. They are all materials used for landmark buildings and important buildings, and can meet the material standard of a design service life of 100 years in the design specification. The outer shell 302 is composed of mortar and blocks. The number of blocks is determined by the pressure design. The whole forms a pressure-resistant and pressure-resistant gas storage device. The mortar and blocks fill the gap between the device and the cave. The outer shell is formed by counterweight blocks to offset the internal gas expansion force and also to protect against external impact. It can be firmly connected to the supporting structure, used for counterweight and volume filling, without strength requirements (reaching C20 or above), and the shape is designed and manufactured according to the space requirements of the stacking location.

[0038] The skeleton 2 includes: a straight frame 201 and an arc frame 202 connected to the upper end of the straight frame 201, and a truss 203 is arranged inside the straight frame 201 and the arc frame 202; the straight frame 201 is connected to the base 4 through a node assembly 6, and the tough inner thin shell 301 is connected to the upper end of the straight frame 201 through a tongue-and-groove groove 204. A sealing strip 205 is arranged inside the tongue-and-groove groove 204. The sealing effect can be improved. The gas expansion force is transmitted to the straight frame 201 through the arc frame 202 and the blocks, and the main expansion tension is borne by the strength of the structure itself, and the self-weight of the concrete blocks is used to assist in bearing the internal pressure. The lateral and downward forces are then transmitted to the truss main beam, and finally to the ground beam and the foundation, forming a complete mechanical transmission path.

[0039] The truss 203 includes: a main beam 206, a cross beam 207 and a supporting beam 208; the lower end of the main beam 206 is supported on the base 4, and the upper end thereof is supported on the arc frame 202; the cross beam 207 is fixed on the main beam 206, and both ends are supported on the inner side of the arc frame 202; one end of the supporting beam 208 is fixed on the outside of the main beam 206, and the other end is supported on the inner side of the arc frame 202. The truss is composed of straight rods and generally has a plane or spatial structure of triangular, polygonal, and arc-shaped units. The truss rods mainly bear axial tension or pressure, so as to make full use of the strength of the material. When the span is large, it can save materials, reduce dead weight and increase rigidity compared with solid beams.

[0040] The base 4 includes: a ground cross beam 401, a ground longitudinal beam 402 and a bottom plate 403; the ground cross beam 401 and the ground longitudinal beam 402 are both connected to the foundation, the ground cross beam 401 is connected to the ground longitudinal beam 402, and the bottom plate 403 is connected to the ground cross beam 401. The ground longitudinal beam 402 has a longitudinal tensile resistance function, and together with the structural column, it forms an anti-seismic crack limiting system to mitigate the negative effects of uneven settlement. The ground cross beam 401 fixes the foundation and the bottom plate on both sides, and also has a transverse tensile resistance function. The bottom plate 403 uses high-strength plates, which are fixed on the ground cross beam and the ground longitudinal beam to form a raft foundation together, and at the same time constitute an airtight whole. The prefabricated components used are produced in the factory, using a mechanized method, with high formula accuracy, sufficient curing time, and stable component materials, which overcomes the problems of unstable formula, uneven mixing, and poor curing conditions when the concrete is cast in place.

[0041] The node assembly 6 includes: a connecting groove 601, a connecting member 602 and a fastening bolt 603; the connecting groove 601 is opened at the lower end of the straight frame 201, and the connecting member 602 is fixed to the upper end of the ground longitudinal beam 402. The connecting groove 601 and the connecting member 602 are both provided with through holes matching the fastening bolt 603, and the fastening bolt 603 passes through the through holes to fix the connecting groove 601 and the connecting member 602.

[0042] When installing the straight frame 201 and the ground longitudinal beam 402, the connection groove 601 is placed on the outside of the connecting piece 602, and the fastening bolt 603 is inserted into the through hole. After the through hole is fastened, the straight frame 201 and the ground longitudinal beam 402 can be fixed. It is assembled with small prefabricated components, and non-welded mortise and tenon, tongue and groove structures are used for physical connection and assembly at normal temperature and pressure. The construction site does not require high-power power access, inert gas storage tanks and other auxiliary facilities, and there is no requirement for the working surface and working environment for installation and welding. It is simple and safe, and has a good service life.

[0043] In view of the construction of storage containers in the cave, a support member 5 is provided on the outside of the skeleton 2, and the support rod 501 is hinged at the lower end of the support rod 501 on the arc frame 202, and the support rod 501 is set as a retractable structure. The support rod 501 includes an internal threaded tube 502 and a screw 503 connected to the internal threaded tube 502, and a support plate 504 is fixed to the upper end of the screw 503. By rotating the screw 503 to move in the internal threaded tube 502, the support plate 504 can be driven to be fixed on the inner wall of the cave to improve the support strength. There is no special requirement for the selection of the terrain of the mine cave. The assembled gas storage device can be constructed in the mine cave first to form an airtight environment, and then the gap between the device and the cave can be filled with mortar and blocks, or the gas storage device and the inner wall of the cave can be connected with a rod system to support the force, which can greatly increase the pressure of the stored gas.

[0044] In this embodiment, the entire device is assembled into a large compressed air storage device using small prefabricated components. The components are small enough to meet various transportation conditions (including human transportation) and can be comparable to the scale formed by cast-in-place devices and other methods. The prefabricated components can support the assembly structure into various forms of various structures. They are assembled using non-welding and physical methods at normal temperature and pressure. After dismantling, the components can be directly reused and assembled into other device projects.

[0045] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A prefabricated non-welded assembled safe and durable storage device for compressed gas, comprising a storage container (1), the storage container (1) being connected to an airtight door (101) and an airtight valve (102), the airtight valve (102) being connected to a heat exchanger and a temperature control device, characterized in that: The storage container (1) comprises a frame (2), the top and bottom of the frame (2) being connected to a protective shell (3) and a base (4) respectively; a support member (5) is provided outside the frame (2); The enclosure shell (3) comprises a tough inner thin shell (301) and an outer shell (302); the tough inner thin shell (301) is connected to the inner side of the frame (2), and the outer shell (302) is connected to the outer side of the frame (2); The skeleton (2) comprises: a straight frame (201) and an arc frame (202) connected to the upper end of the straight frame (201), and trusses (203) are provided on the inner sides of the straight frame (201) and the arc frame (202); The straight frame (201) is connected to the base (4) via a node assembly (6), and the tough inner thin shell (301) is connected to the upper end of the straight frame (201) via a tongue-and-groove groove (204); The truss (203) comprises: a main beam (206), a cross beam (207) and a supporting beam (208); the lower end of the main beam (206) is supported on the base (4), and the upper end thereof is supported on the arc frame (202); the cross beam (207) is fixed on the main beam (206), and both ends are supported on the inner side of the arc frame (202); one end of the supporting beam (208) is fixed on the outside of the main beam (206), and the other end is supported on the inner side of the arc frame (202); The base (4) comprises: a ground cross beam (401), a ground longitudinal beam (402) and a bottom plate (403); the ground cross beam (401) and the ground longitudinal beam (402) are both connected to the foundation, the ground cross beam (401) is connected to the ground longitudinal beam (402), and the bottom plate (403) is connected to the ground cross beam (401); The node assembly (6) comprises: a connection groove (601), a connection piece (602) and a fastening bolt (603); the connection groove (601) is formed at the lower end of the straight frame (201); the connection piece (602) is fixed to the upper end of the ground longitudinal beam (402); through holes matching the fastening bolt (603) are formed in the connection groove (601) and the connection piece (602); the fastening bolt (603) passes through the through holes to fix the connection groove (601) and the connection piece (602); The support member (5) comprises: a support rod (501), the lower end of the support rod (501) is hinged on the arc frame (202), and the support rod (501) is configured as a telescopic structure; The support rod (501) comprises an internally threaded tube (502) and a screw rod (503) connected to the internally threaded tube (502), and a support plate (504) is fixed to the upper end of the screw rod (503).

2. According to claim 1, a prefabricated non-welded assembled safe and durable storage device for compressed gas, characterized in that: A sealing strip (205) is provided on the inner side of the tongue-and-groove groove (204).

3. According to claim 1, a prefabricated non-welded assembled safe and durable storage device for compressed gas, characterized in that: The shell (302) is made of mortar and blocks.

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