CN112483893A

CN112483893A - Wrapped gas cylinder tube bundle type container

Info

Publication number: CN112483893A
Application number: CN202011337592.8A
Authority: CN
Inventors: 朱江峰; 陈凡; 周纯; 黄国明; 邝周凌; 夏明�; 杜正良; 倪宝鹏
Original assignee: Zhejiang Rein Gas Equipment Co ltd
Current assignee: Zhejiang Rein Gas Equipment Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-03-12

Abstract

The invention discloses a winding gas cylinder tube bundle type container, which is characterized by comprising the following components: front end plate, rear end plate and 9 big volume steel inner bags ring carbon fiber winding gas cylinders, the both ends of winding gas cylinder respectively with front end flange with novel prevent changeing the flange assembly and be connected, prevent changeing the flange assembly and comprise ring flange, compact heap I, compact heap II, will through hexagon socket head cap screw compact heap II fastens with the ring flange, connects after the fastening winding gas cylinder leans on the back soon, will press through hexagon socket head cap screw compact heap I with compact heap II fastens, and the reuse bolt will the ring flange is fixed on the rear end plate. The invention has the advantages of small gas cylinder weight-volume ratio, large volume, light weight, less pipeline connection points and welding points, less leakage points, good pipeline system structure stability and the like.

Description

Wrapped gas cylinder tube bundle type container

Technical Field

The invention relates to the field of movable pressure containers, in particular to a gas cylinder pipe bundle winding type container.

Background

The development of clean energy vehicles becomes the best choice for improving the environment and sustainable development of countries in the world, along with the increasing development of clean energy vehicles, the demands of natural gas and hydrogen are increasingly vigorous, and the transportation is an important ring for the development of natural gas and hydrogen energy. At present, natural gas is mainly transported through LNG tank car, LNG tank, CNG long tube trailer and CNG tube bundle container, and hydrogen is mainly transported through long tube trailer and tube bundle container. The existing steel cylinder tube bundle type containers have two types: one type is a tube bundle type container (as shown in figure 1) assembled by large-volume steel seamless gas cylinders, at present, a tube bundle type container or a long tube trailer is assembled by 6-10 large-volume steel seamless gas cylinders with the nominal working pressure of 20MPa and the thickness of more than 16.5 mm-21.2 mm, the existing long tube trailer and the tube bundle type container are mainly assembled by the large-volume steel seamless gas cylinders with the outer diameter of 559-719 mm, and the maximum volume is only 26m³The dead weight is more than 34 tons, and the weight-volume ratio (the ratio of weight to volume) of the gas cylinder is large. The mode often results in the dead weight of the tube bundle type container or the long tube trailer to be too heavy, the volume is small, the loading capacity is small, the transportation cost is high, and the energy conservation and emission reduction are not facilitated. Meanwhile, in the existing large-volume steel seamless gas cylinder tube bundle type container, the outer wall of the steel cylinder cannot be effectively protected due to the fact that the steel cylinder is exposed in the natural environment. The other type is a tube bundle type container (as shown in figures 2 and 3) assembled by small-volume wound gas cylinders, the tube bundle type container is generally assembled by the small-volume wound gas cylinders with the volume of 30-450L, the tube bundle type container gas cylinders assembled in the mode are small in volume, large in quantity, multiple in valves, multiple in pipeline welding points or connecting points, inconvenient to operate, inconvenient to regularly inspect, multiple in leakage points and capable of increasing risks in the operation process. Meanwhile, the branch pipelines of the pipeline system structure of the existing tube bundle container are in hard connection, and the shock absorption performance of the pipeline system structure is easy to cause cracks or even fracture at the joints or welding seams due to expansion with heat and contraction with cold, so that medium leakage is caused to cause harm.

On the premise of limiting road transportation at home and abroad, how to reduce the dead weight of the gas cylinder, increase the loading capacity of gas and improve the stability of a pipeline system becomes a key problem to be solved. Compared with a steel gas cylinder, the large-volume wound gas cylinder has the advantages of light dead weight, small weight-volume ratio, good structural stability of a pipeline system, large volume of a tube bundle container assembled by the high-pressure wound gas cylinder, large loading capacity, effective reduction of unit transportation cost and accordance with national policies of energy conservation and emission reduction.

Disclosure of Invention

The invention aims to overcome the technical defects that a tube bundle type container assembled by large-volume steel seamless gas cylinders in the prior art is too heavy in vehicle dead weight, small in volume, small in loading capacity, high in transportation cost, not beneficial to energy conservation and emission reduction and exposed in steel cylinders, and the technical defects that the tube bundle type container assembled by small-volume wound gas cylinders is small in volume, large in quantity, multiple in valves, multiple in pipeline welding spots or connection points, inconvenient to operate, inconvenient to inspect, multiple in leakage points and high in risk in the operation process. 9 steel inner containers with the outer diameter of 719mm and the outer diameter of 20MPa are assembled to provide a 40-foot tube bundle container, the air cylinders are wound annularly, the volume of each air cylinder reaches 4160L, and the total volume reaches 37m³. Winding gas cylinder tube bank formula container has adopted the big volume steel inner bag ring that the volume-to-weight ratio is high to carbon fiber winding gas cylinder as gas storage container, and the surface curing of winding gas cylinder steel inner bag has combined material winding pressure-bearing protective layer, and combined material winding pressure-bearing protective layer comprises carbon fiber winding bearing layer and glass fiber winding protective layer, and glass fiber winding protective layer sets up in the outside of carbon fiber winding bearing layer, and the protection carbon fiber avoids dust in the environment, erosion such as acid rain. The gas cylinder is an upgraded and updated product of the steel gas cylinder, the volume-weight ratio of the gas cylinder is greatly improved, and the carrying capacity of gas is improved. While being light-weightedThe gas bottle and the tube bundle type container greatly improve the transportation efficiency of gas.

The both ends of winding gas cylinder are connected with front end flange and novel anti-rotation combination flange respectively, and anti-rotation combination flange comprises ring flange 1, compact heap I, compact heap II, fastens compact heap II and ring flange through hexagon socket head cap screw, connects the winding gas cylinder after the fastening, leans on the back soon, fastens compact heap I and compact heap II through hexagon socket head cap screw, and reuse bolt is fixed the ring flange on the rear end plate. The axial rotation of the gas cylinder can be effectively prevented. The pipeline systems all adopt flexible connection structures, and the flexible connection structures can reduce vibration among the pipeline systems, are not easy to break and are more stable and not easy to leak.

This tube bank formula container is a confined whole, and the steel sheet has all been welded to side and bottom, can effectually protect injuries such as ultraviolet radiation, gravel impact, chemical corrosion and sharp-pointed object fish tail, makes the effectual extension of life of gas cylinder. The top of the tube bundle container is sealed by a steel top plate or tarpaulin, so that the safe operation of the wound gas cylinder is further ensured.

In another preferred embodiment, the method for manufacturing the steel liner ring-wound gas cylinder comprises the following steps:

hot spinning two ends of the large-diameter seamless steel pipe into spherical end sockets, and then carrying out the working procedures of quenching and tempering heat treatment, thread processing and the like to manufacture a seamless steel inner container which can be in threaded connection with the end plugs;

the seamless steel inner container is treated by adopting a heat treatment process of quenching and tempering so as to convert the metallographic structure of the seamless steel inner container into a tempered sorbite;

preparing glue solution, wherein the glue solution is epoxy resin glue solution;

winding and curing a fiber material and the glue solution on the surface of the seamless steel inner container to form a pressure-bearing layer;

winding and curing glass fiber and epoxy resin on the surface of the pressure bearing layer to form a protective layer;

and transferring the steel liner to a curing furnace for drying and curing to obtain the large-diameter seamless steel liner annularly wound gas cylinder.

In another preferred embodiment, the fiber material is selected from carbon fiber, glass fiber, polyacrylonitrile pre-oxidized fiber, graphite fiber or other composite materials.

In another preferred example, the initial winding spiral angle of the fibers in the bearing layer formed by winding and curing the fiber material is not less than 60 degrees; the winding spiral angle is uniformly increased, and the winding mode is positive and negative alternate and cross winding.

In another preferred example, in the quenching and tempering heat treatment process, the temperature in the quenching furnace is 860-880 ℃, the temperature in the tempering furnace is 600-680 ℃, and the stepping time of the seamless steel inner container is 20-40 min (the gas cylinders are manufactured according to batches, 30-50 gas cylinders can be selected in each batch, heat treatment is continuously carried out, each time, a single gas cylinder enters the furnace, and the stepping time refers to the interval time between the front gas cylinder and the rear gas cylinder entering the heat treatment furnace); after the temperature of the seamless steel liner in the quenching furnace reaches 860-880 ℃, the seamless steel liner enters a quenching tank through a conveying line, the seamless steel liner rotates, the rotating speed is 20-30 r/min, and quenching liquid is sprayed from the upper part, so that the effect of quickly cooling is achieved; so that the roundness (namely the difference between the maximum outer diameter and the minimum outer diameter on the same section) of the seamless steel inner container after quenching and tempering heat treatment does not exceed 2 percent of the average outer diameter of the section, and the straightness does not exceed 0.15 percent of the total length; the grain size of the tempered sorbite is more than or equal to grade 6.

In another preferred example, the preparing the glue solution specifically includes: preparing epoxy resin glue solution according to a proportion, wherein the proportion is calculated according to the mass ratio that the epoxy resin: curing agent: defoaming agent: a toughening agent: accelerator 100:90:1:15: 1. The proportion can prevent air from being doped in the epoxy resin and generate multiple holes, reduce the brittleness of the bearing layer, increase the toughness, improve the bearing strength, obtain good heat-resistant, water-resistant and corrosion-resistant performances, artificially control the curing speed and ensure that sufficient time is available for finishing winding work.

In another preferred embodiment, the winding and curing process to form the pressure bearing layer at least comprises the following steps: connecting the seamless steel inner container with a winding device, wherein the winding device at least comprises a part capable of rotating the inner container, a trolley capable of moving the inner container back and forth and a glue groove; pouring glue solution into a glue tank, introducing carbon fibers into a winding head on winding equipment after the carbon fibers pass through the glue tank, setting the number of the fibers to be 24, setting the pretightening force to be 10N, and preparing for winding; winding according to a set program and the number of the fibers; during winding, when the carbon fiber passes through the glue groove, glue solution in the glue groove is attached to the carbon fiber and is wound on the bottle body together, the rotating speed of the inner container is 20r/min, and the advancing speed of the trolley is as follows: 9844 mm/min; and after the carbon fiber winding is finished, cutting off the joint to form a pressure bearing layer.

In another preferred embodiment, the winding and curing process to form the protective layer at least includes: leading the glass fiber into a filament winding head on winding equipment after passing through a glue groove, and preparing for winding; winding the fiber according to a set program and the number of the fibers; during winding, when the glass fiber passes through the glue groove, glue liquid in the glue groove is attached to the glass fiber and is wound on the bottle body together, a scraper is used for scraping off redundant glue liquid to form a protective layer, and then a gas bottle label is attached to the protective layer.

In another preferred example, the step of drying and curing is further included after the step of winding and curing to form the protective layer, and the step of drying and curing includes: and transferring the wound gas cylinder to a curing furnace for drying and curing, and paying attention to monitoring the curing temperature to prevent temperature abnormity (over-high or over-low).

In another preferred example, the step of drying and curing further includes a hydraulic test step, a drying step, and a cleaning step, wherein the hydraulic test step includes: connecting the solidified gas cylinder into a water jacket cover and tightly connecting, pressurizing by self-tightening pressure, maintaining the pressure for 60s, pressurizing by water pressure test pressure, and maintaining the pressure for 120 s; calculating total expansion, elastic expansion and residual expansion rate, wherein the residual expansion rate of the gas cylinder is required to be less than 5%, and transferring the qualified gas cylinder to a drying procedure; the drying procedure comprises the steps of inverting the tested bottle to exhaust water in the gas bottle, and blowing the interior of the gas bottle with steam; the cleaning procedure comprises the steps of cleaning glue solution residues, dirt on the inner surface and the outer surface and damage.

In another preferred example, the initial winding helix angle of the carbon fibers in the carbon fiber winding bearing layer is not less than 60 degrees, and the pre-tightening force of the high-strength fibers is applied. By combining the uniform increase of the winding spiral angle and the forward and reverse alternation and cross winding, the stress state consistency of the fibers among layers in the inflation process can be more reasonably distributed, and less fibers can achieve a more ideal reinforcing effect.

In another preferred example, a protective layer is added outside the pressure-bearing layer of the carbon fiber composite material. The protective layer has the function of preventing impact damage from cutting off carbon fibers in the composite material reinforced pressure bearing layer, so that local fatigue failure points are formed, and the compression-resistant compensation effect of the whole composite material pressure bearing layer on the liner is failed.

In another preferred example, carbon fiber and epoxy resin or glass fiber and epoxy resin or polyacrylonitrile pre-oxidized fiber and epoxy resin or graphite fiber and epoxy resin or other composite materials and epoxy resin are wound and cured to form the bearing layer.

In another preferred example, the protective layer is formed by winding and curing glass fiber and epoxy resin.

In another preferred example, the winding pressure-bearing layer is wound by using a strip or cloth woven by the fibers.

In another preferred example, the steel inner container 1 has a large volume of 2000-4300 liters.

In another preferred example, a seamless steel tube with the diameter of 671mm to 719mm is adopted to manufacture a steel liner, so that the volume of the wound gas cylinder reaches 2000L to 4300L;

the head shape of a spun seamless steel tube with the thickness of 8.8-16 mm and the diameter of 671-719 mm meets the design requirement by using a special spinning process, the outer diameter of the opening of the gas cylinder is ensured to be phi 144-148 mm, and the inner diameter is ensured to be phi 85-95 mm;

adopting a rotary spraying heat treatment process, so that the roundness (namely the difference between the maximum outer diameter and the minimum outer diameter on the same section) of the seamless steel inner container with the diameter of 671mm to 719mm and the diameter of 8.8mm to 16mm does not exceed 2 percent of the average outer diameter of the section; the straightness does not exceed 0.15 percent of the total length, the metallographic structure is a tempered sorbite, and the grain size is more than or equal to grade 6;

the combined winding process of orthogonal winding and cross winding is adopted, so that the carbon fibers bear radial stress and axial stress, stress among all layers of carbon fibers in winding is strengthened and reasonably distributed, gaps among the carbon fibers are filled with epoxy resin, and after the resin is cured, the orthogonal winding and cross winding carbon fibers are integrated, so that the carbon fiber pressure-bearing layer can bear the bursting pressure which is 1.25 times of the nominal working pressure of a wound gas cylinder.

The solidified gas cylinder is connected into a water jacket cover and is tightly connected, the pressure is firstly applied to the self-tightening pressure, a plastic deformation layer is generated on the inner wall of the liner of the gas cylinder, after the whole gas cylinder is unloaded, the inner surface of the gas cylinder is pressed by external pressure, and the carbon fiber bearing layer is pressed by internal pressure, so that the stress among the carbon fibers of each layer is strengthened and reasonably distributed. After the hydrostatic test, the residual expansion rate of the gas cylinder is less than 5 percent.

In another preferred example, the connection pipeline adopts a flexible connection structure, and preferably, a protective layer is further arranged outside the flexible connection structure, and the protective layer is made of a rubber material.

In another preferred example, the flexible connection structure is a connection pipe fitting, and the surface of the connection pipe fitting is provided with a plurality of corrugated parts along one circle of the connection pipe fitting. The pipeline connecting pipe fitting structure can reduce vibration through the connection of the flexible connecting structure, so that a pipeline system is more stable.

Optionally, the connecting pipeline adopts a flexible connecting structure, the flexible connecting structure adopts a continuous flexible pipe, and a rope or a filament for enhancing high tensile force resistance is added in the longitudinal direction of the pipe, so that the flexibility of the flexible connecting structure is increased, and the flexible pipe can absorb and buffer vibration in the use process, so that the looseness of the connecting point of the pipeline system is avoided.

In another preferred example, the connection pipeline is a flexible connection structure pipe, and the flexible connection structure pipe comprises a flexible substrate, a metal unit and a protection layer. The flexible substrate may be a cyclic olefin polymer substrate or a polyimide substrate. The metal unit may be a copper layer or an aluminum layer. The protective layer is made of a rubber material.

In another preferred embodiment, the flexible connection structure specifically includes an inner tube and an outer tube, the outer tube includes a straight tube portion and a telescopic portion, the straight tube portion is sleeved outside the inner tube, and the telescopic portion is sleeved outside the inner tube. The elasticity of flexible connection structure is good, and easy reconversion after the deformation is effectual in the shock attenuation.

In another preferred example, the connection pipeline adopts a flexible connection structure, and the flexible connection structure is a spiral structure. The spiral flexible connection structure has good deformation capacity, and can buffer impact force through the deformation of the structure after bearing impact, so that the buffering and shock absorption functions are improved.

The invention has the following advantages: 1) the 20MPa large-volume steel liner annular carbon fiber wound gas cylinder is light in weight, large in volume and small in weight-volume ratio; 2) the large-volume steel inner container carbon fiber hoop wound gas cylinder with 9 pieces and 20MPa is adopted as a pressure-bearing container, and the volume of the wound gas cylinder tube bundle type container is 37m³The hydrogen loading capacity of the steel seamless gas cylinder tube bundle type container with the pressure of 20MPa is improved by 47.1 percent; the number of wound gas cylinders and valves is reduced, the number of connecting points and welding points of pipelines is reduced, the number of leakage points is small, and the risk in the operation process is reduced; 3) the winding gas cylinder adopts a combined winding process of orthogonal winding and cross winding, so that the carbon fiber bears radial stress and axial stress; 4) a novel anti-rotation structure of the high-pressure thin-wall storage and transportation gas cylinder is adopted, so that the circumferential rotation and the axial movement are prevented in the process of winding the gas cylinder and transporting books; 5) 1.5mm steel plates are welded on the side face and the bottom of the tube bundle container, so that fireproof and waterproof effects can be achieved, gravel splashing can be prevented during transportation, the gas cylinder can be effectively protected from being damaged, the service life of the gas cylinder is prolonged, the top of the tube bundle container adopts a 1.5mm steel top or fireproof, waterproof and corrosion-resistant tarpaulin as a capping, the gas cylinder is ensured to be wound from the top without being affected by gravel splashing, and a movable shutter arranged on the side face can accelerate the flow of internal air when the temperature inside the tube bundle container is high, so that rapid cooling is achieved; 6) the flexible connection structure of the spiral pipeline is adopted between the main pipeline and the cylinder valve, so that the stability of a pipeline system is better, and gas leakage can be prevented under the condition of severe vibration; 7) the pipeline is concentrated in the rear bin, the operation is convenient, and the annual inspection and the periodic inspection are convenient.

The advantages and spirit of the present invention can be further understood by the following detailed description of the invention and the accompanying drawings.

Drawings

FIG. 1 is a structural schematic view of a large-volume steel seamless gas cylinder tube bundle type container related to the prior art;

FIG. 2 is a schematic front view of a small volume winding gas cylinder tube bundle container structure according to the prior art;

FIG. 3 is a schematic top view of a small volume wrapped gas cylinder tube bundle container configuration of the prior art;

FIG. 4 is a schematic view of a wrapped gas cylinder tube bundle container according to the present invention;

FIG. 5 is a top view of a wrapped gas cylinder tube bundle container in accordance with the present invention;

fig. 6 is a schematic view of a wrapped gas cylinder structure of a wrapped gas cylinder tube bundle container according to the present invention;

FIG. 7 is a schematic view of the connection of the wrapped gas cylinders and the rear end plate of the wrapped gas cylinder tube bundle container according to the present invention;

FIG. 8 is a schematic view of the connection of the wrapped gas cylinders and the front end plate of the wrapped gas cylinder tube bundle container according to the present invention;

fig. 9 is a schematic view of a door structure of a wrapped gas cylinder tube bundle container according to the present invention;

fig. 10 is a schematic view of a flange structure of a wrapped gas cylinder tube bundle container according to the present invention;

fig. 11 is a schematic structural view of a compact block i of the container wrapped with a gas cylinder tube bundle according to the present invention;

fig. 12 is a schematic structural diagram of a compact block ii of the container wrapped with gas cylinder tube bundles according to the present invention.

In the figure: 1. rear end plate, 2, anti-rotation combined flange, 3, venetian blind, 4, box body, 5, winding gas cylinder, 6, front end plate, 7, front connecting flange, 8, tarpaulin, 9, rear bottle plug, 10, steel inner container, 11, carbon fiber winding pressure bearing layer, 12, glass fiber winding protective layer, 13, front bottle plug, 14, flange plate, 15, pressing block I, 16, pressing block, II 17, box door

Detailed Description

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention should be understood not to be limited to such an embodiment described below, and the technical idea of the present invention may be implemented in combination with other known techniques or other techniques having the same functions as those of the known techniques.

In the following description of the embodiments, for purposes of clearly illustrating the structure and operation of the present invention, directional terms are used, but the terms "front", "rear", "left", "right", "outer", "inner", "outward", "inward", "axial", "radial", and the like are to be construed as words of convenience and are not to be construed as limiting terms.

Specific embodiments of the present invention are described in detail below with reference to fig. 4-12.

Fig. 4-5 are schematic structural diagrams and top views of a tube bundle container according to the present invention. The novel solar energy collecting box comprises a rear end plate 1, a rear end plate 2, an anti-rotation combined flange 3, a movable shutter 4, a box body 5, a winding gas cylinder 6, a front end plate 7, a front connecting flange 8 and tarpaulin.

Fig. 6 is a schematic view of a wrapped gas cylinder structure of the wrapped gas cylinder tube bundle container according to the present invention. The drawing comprises a rear bottle stopper 9, a rear bottle stopper 10, a steel liner 11, a carbon fiber winding pressure-bearing layer 12, a glass fiber winding protective layer 13 and a front bottle stopper.

This tube bank formula container includes the box and transversely places a plurality of big volume steel inner bags ring at frame construction inside and carbon fiber winding gas cylinder 5. Big volume steel inner bag ring is to carbon fiber winding gas cylinder including steel inner bag 10, combined material winding protective layer 11 and 12, front end plug 9 and back end plug 13, the surface cure of steel inner bag has combined material winding pressure-bearing protective layer, combined material winding pressure-bearing protective layer comprises carbon fiber winding pressure-bearing layer 11 and glass fiber winding protective layer 12, epoxy is in among the clearance of carbon fiber winding pressure-bearing layer and glass fiber winding protective layer, it is through the thermal cure back, with carbon fiber winding pressure-bearing layer, glass fiber winding protective layer closely combines together, form a whole. The wound cylinder is generally cylindrical in shape having an internal cavity. The bottle plug is provided with an inner hole and is placed at the opening end of the wound gas cylinder body. The inner cavity of the large-volume steel liner annular carbon fiber wound gas cylinder 5 is communicated with the outside through an inner hole of the bottle plug. The front end plug is connected with a rear end safety device, and the rear end plug is provided with a connecting pipeline. The gas cylinder can be filled with and discharged with media through the plug.

The connecting pipelines of the tube bundle type container pipeline system all adopt flexible connecting structures (not shown in the figure), so that the pipeline system is more stable and is not easy to leak. Particularly, due to the flexible connection structure adopted between the main pipeline and the cylinder valve, the stability of a pipeline system is better, and gas leakage can be prevented under the condition of severe vibration.

In another preferred embodiment, the connecting line is a flexible connecting structure which is a continuous flexible pipe, and a rope or a filament for enhancing the resistance to high tensile force is added in the longitudinal direction of the flexible pipe. Particularly, flexible connection structure is the connecting pipe spare, and the connecting pipe spare surface is provided with the fold portion of multichannel along connecting pipe spare a week. The pipeline connecting pipe fitting structure reduces vibration through connection of the flexible connecting structure, so that a pipeline system is more stable.

In another preferred embodiment, the flexible connecting structure is a connecting pipe, and the surface of the connecting pipe is provided with a plurality of folds along the circumference of the connecting pipe. The pipeline connecting pipe fitting structure can reduce vibration through connection of the flexible connecting structure, so that a pipeline system is more stable.

In another preferred embodiment, the connecting pipeline adopts a flexible connecting structure, the flexible connecting structure adopts a continuous flexible pipe, and a rope or a filament for enhancing the high tensile force resistance is added in the longitudinal direction of the pipe, so that the flexibility of the flexible connecting structure is increased, and the flexible pipe can absorb and buffer vibration in the use process, thereby avoiding the looseness of the connecting point of the pipeline system.

In another preferred embodiment, the connecting pipeline adopts a flexible connecting structure pipe, and the flexible connecting structure pipe comprises a flexible substrate, a metal unit and a protective layer. The flexible substrate may be a cyclic olefin polymer substrate or a polyimide substrate. The metal unit may be a copper layer or an aluminum layer. The protective layer is made of a wire clamping rubber material.

In another preferred embodiment, the flexible connection structure specifically includes an inner tube and an outer tube, two ends of the inner tube are respectively in fast-clamping butt joint with the inner tube interfaces of the two connectors, the outer tube includes a straight tube portion and a telescopic portion, the straight tube portion is sleeved outside the inner tube, one end of the straight tube portion is in fast-clamping butt joint with the outer tube interface of one connector, the other end of the straight tube portion is in fast-clamping butt joint with one end of the telescopic portion, the telescopic portion is sleeved outside the inner tube, the other end of the telescopic portion is in fast-clamping butt joint with the outer tube interface of the other connector, and the telescopic portion is in a telescopic structure. The elasticity of flexible connection structure is good, and easy reconversion after the deformation is effectual in the shock attenuation.

In another preferred embodiment, the connecting pipeline adopts a flexible connecting structure, the flexible connecting structure is a spiral structure, specifically, the spiral structure comprises rigid spiral protrusions and flexible spiral grooves which are arranged at intervals, and the spiral protrusions are mutually attached when the spiral grooves are contracted and folded, so that the telescopic function is achieved. The spiral flexible connection structure has good deformation capacity, and can buffer impact force through the deformation of the structure after bearing impact, so that the buffering and shock absorption functions are improved.

The winding gas cylinder of the winding gas cylinder tube bundle type container related to the figure 6 adopts a combined winding process of orthogonal winding and cross winding, so that the carbon fibers bear radial stress and axial stress, the stress among all layers of carbon fibers in the winding is strengthened and reasonably distributed, meanwhile, the gaps between the carbon fibers and the glass fibers are filled with epoxy resin, and after the resin is cured, the orthogonal winding and the cross winding carbon fibers are integrated, so that the carbon fiber pressure bearing layer can bear the bursting pressure 2.5 times higher than the nominal working pressure of the winding gas cylinder. The solidified gas cylinder is connected into a water jacket cover and is tightly connected, the pressure is firstly applied to the self-tightening pressure, a plastic deformation layer is generated on the inner wall of the liner of the gas cylinder, after the whole gas cylinder is unloaded, the inner surface of the gas cylinder is pressed by external pressure, and the carbon fiber bearing layer is pressed by internal pressure, so that the stress among the carbon fibers of each layer is strengthened and reasonably distributed. After the hydrostatic test, the residual expansion rate of the gas cylinder is less than 5 percent.

The large-volume steel liner circumferential carbon fiber winding gas cylinder comprises a steel liner 1, wherein a bearing layer is arranged outside the steel liner, a protective layer is arranged outside the bearing layer, the bearing layer comprises a carbon fiber winding bearing layer 2, the protective layer comprises a glass fiber winding protective layer 3, one section of the steel liner 1 is screwed and fixed with a front end cover 5 through internal threads, the other end of the steel liner is screwed and fixed with a rear end cover 4, the carbon fiber winding bearing layer 2 adopts a combined winding process of orthogonal winding and cross winding, so that the carbon fiber bears radial stress and axial stress, the stress among the carbon fibers in winding is strengthened and reasonably distributed, meanwhile, gaps among the carbon fibers are filled with epoxy resin, and after the resin is cured, the orthogonal winding carbon fibers and the cross winding carbon fibers form a whole, and the structural characteristics of relevance and consistency of mutual compensation are strengthened, the elastic deformation of the inner container in the process of repeatedly charging and discharging high-pressure gas is strictly controlled within the theoretical standard value. The method of manufacturing the main components of the wound cylinder is briefly described below:

seamless steel inner container

And (3) selecting seamless steel tubes with corresponding diameters and lengths, hot spinning the two ends of the seamless steel tubes into spherical end sockets, sealing the two ends, boosting the pressure, and performing quenching and tempering heat treatment in a furnace. And carrying out hardness detection, internal and external thread processing, hydrostatic test, internal polishing, endoscopic observation, nondestructive detection, external polishing and other processes to prepare the hot spinning necking seamless steel inner container which can be butted with the air inlet valve, the air outlet valve and the end plugs. The high-strength carbon fiber is wound on the seamless steel inner container, customized winding equipment is generally adopted, and the seamless steel inner container is connected to a winding machine by means of a special fixture. The steel inner container has 2000-4300 liter big volume. The seamless steel inner container which can be connected with the end plug and the valve is manufactured by hot spinning processing of two ends of the seamless steel tube into a bottle shoulder and a bottle neck, hardening and tempering heat treatment and internal and external thread processing, and then whether the seamless steel inner container is qualified or not is verified by hardness detection, hydrostatic test, nondestructive testing and the like.

Pressure bearing layer

Preparing glue solution according to a proportion, wherein the glue solution is epoxy resin glue solution, and the glue preparation adopts a small quantity of repeated principles. The glue preparation epoxy resin does not exceed 5kg each time, and the glue solution is fully stirred for not less than 3 minutes. Connecting the seamless steel inner container with winding equipment, pouring glue solution into a glue groove, introducing fibers into a winding head on the winding equipment, and preparing for winding. Winding according to the set program and the number of the fibers. During winding, when the fibers are passed through the glue tank, glue solution in the glue tank is attached to the fibers and is wound on the bottle body together; and (5) finishing fiber winding, and cutting off joints.

Protective layer

The glass fiber is introduced into the winding head on the winding apparatus ready for winding. Winding according to the set program and the number of the fibers. And during winding, when the glass fiber is in the glue groove, the glue solution in the glue groove is attached to the glass fiber and is wound on the bottle body together, the scraper is used for scraping the redundant glue solution, and the last layer is adhered with a gas bottle label.

The large-diameter seamless steel inner container annularly wound gas cylinder comprises the components, wherein the large-diameter seamless steel inner container annularly winds the gas cylinder, the structure comprises a hot spinning necking seamless steel inner container and a composite material pressure bearing layer formed by winding and curing carbon fibers on the outer wall of the inner container, a front end plug and a rear end plug are connected by means of internal threads of bottle necks at two ends, an air inlet valve, an air outlet valve and a pollution discharge device are arranged on the rear end plug, a safety discharge device is arranged on the front end plug, and a protective layer is additionally arranged outside the carbon fiber composite material pressure bearing layer. The protective layer has the function of preventing impact damage from cutting off carbon fibers in the composite material reinforced pressure bearing layer, so that local fatigue failure points are formed, and the compression-resistant compensation effect of the whole composite material pressure bearing layer on the liner is failed.

In another preferred embodiment, the bearing layer is a carbon fiber winding bearing layer 2, wherein the initial winding spiral angle of the carbon fiber is not less than 60 degrees, and the pre-tightening force of the high-strength fiber is applied. By combining the uniform increase of the winding spiral angle and the forward and reverse alternation and cross winding, the stress state consistency of the fibers among layers in the inflation process can be more reasonably distributed, and less fibers can achieve a more ideal reinforcing effect.

In another preferred embodiment, a protective layer is added outside the bearing layer of the carbon fiber composite material. The protective layer has the function of preventing impact damage from cutting off carbon fibers in the composite material reinforced pressure bearing layer, so that local fatigue failure points are formed, and the compression-resistant compensation effect of the whole composite material pressure bearing layer on the liner is failed.

In another preferred embodiment, the carbon fiber is wound with the epoxy resin and cured to form a bearing layer; or winding and curing other composite materials and epoxy resin to form a pressure bearing layer; or winding and curing the glass fiber and the epoxy resin to form a pressure-bearing layer; or winding and curing polyacrylonitrile pre-oxidized fiber and epoxy resin to form a pressure-bearing layer; or winding and curing graphite fibers and epoxy resin to form a pressure-bearing layer; or the protective layer is formed by winding and curing glass fiber and epoxy resin; or the winding pressure-bearing layer is wound by strips woven by the fibers; or the winding pressure-bearing layer is wound by adopting cloth woven by the fibers; or the steel inner container 1 has a large volume of 2000-4300 liters; or the diameter of the steel inner container 1 is 671-719 mm, and the thickness is 9.6-16 mm.

In another preferred embodiment, the steel inner container 1 has a large volume of phi 719mm, the weight-to-volume ratio of the wound gas cylinder is 0.52-0.7 under 20MPa, and the weight-to-volume ratio of the wound gas cylinder is 1.02-1.3 under 30 MPa. Under the same nominal working pressure, the weight ratio of the large-volume steel liner annularly wound gas cylinder to the steel gas cylinder is improved by 60 percent, the dead weight of the gas cylinder is greatly reduced, and the loading quality and the transportation efficiency of media are improved.

In another preferred embodiment, the working pressure of the winding gas cylinder is 20-30 MPa.

In another preferred embodiment, the epoxy resin glue solution is prepared by mixing the following components in percentage by weight: curing agent: defoaming agent: a toughening agent: the mass ratio of the accelerator is 100:90:1:15: 1. The proportion can prevent air from being doped in the epoxy resin and generate multiple holes, reduce the brittleness of the bearing layer, increase the toughness, improve the bearing strength, obtain good heat-resistant, water-resistant and corrosion-resistant performances, artificially control the curing speed and ensure that sufficient time is available for finishing winding work.

In another preferred embodiment, the number of the carbon fibers is 24, and the pretightening force is 10N.

In another preferred embodiment, the inner container of the seamless steel inner container of the gas cylinder adopts a heat treatment process of quenching and tempering, the temperature in a quenching furnace is set to be 860-880 ℃, the temperature in a tempering furnace is set to be 600-680 ℃, and the stepping time is 20-40 min (the gas cylinders are manufactured according to batches, 30-50 gas cylinders can be selected in each batch, and the heat treatment is continuously carried out, wherein each time is a single gas cylinder entering the heat treatment furnace, and the stepping time refers to the interval time between the front gas cylinder and the rear gas cylinder entering the heat treatment furnace); after the temperature of the seamless steel liner of the gas cylinder in a quenching furnace reaches 860-880 ℃, the seamless steel liner enters a quenching tank through a conveying line, the seamless steel liner rotates by itself, the rotating speed is 20-30 r/min, quenching liquid is sprayed from the upper part, the effect of quickly cooling is achieved, the roundness (namely the difference between the maximum outer diameter and the minimum outer diameter on the same section) of the seamless steel liner after quenching and tempering heat treatment is not more than 2% of the average outer diameter of the section, and the straightness is not more than 0.15% of the total length; the metallographic structure is a tempered sorbite, and the grain size is more than or equal to grade 6.

The manufacturing process of the large-volume steel inner container circumferential carbon fiber wound gas cylinder comprises the following steps:

firstly, selecting seamless steel tubes with corresponding diameters and lengths, hot spinning two ends of the seamless steel tubes to form spherical end sockets, carrying out quenching and tempering heat treatment, detecting hardness, processing internal and external threads, carrying out hydrostatic test, carrying out internal polishing and endoscopic treatment, and carrying out nondestructive detection, external polishing and other procedures to manufacture the seamless steel inner container which can be in threaded connection with the end plugs.

Spinning uses special process parameters: taking a winding gas cylinder with the diameter of 719mm and the pressure of 20MPa as an example, the parameters of the spinning process are as follows: the length of the pipe orifice in the medium frequency is 600-700 mm, the heating temperature of the pipe orifice is 1200-1350 ℃, the clamping pressure of the main shaft is 5.3MPa, the corresponding voltage and current are adopted in the temperature rising stages of the medium frequency furnaces P1, P2 and P3, the rotating speed of the main shaft is 200-300 r/min during spinning, after arc spinning is carried out for 13-18 times by the spinning wheel, the outer diameter of the cylinder opening of the gas cylinder is ensured to be phi 144-148 mm, the inner diameter is ensured to be phi 85-95 mm, the conforming degree of the forming template of the cylinder shoulder, the thickness dimension of the section of the cylinder opening of the gas cylinder and the quality of the inner surface and the outer surface of the cylinder shoulder;

secondly, a heat treatment process of quenching and tempering is adopted for the seamless steel inner container of the gas cylinder, the temperature in a quenching furnace is set to be 860-880 ℃, the temperature in a tempering furnace is set to be 600-680 ℃, and the stepping time is 20-40 min (the gas cylinders are manufactured in batches, 30-50 gas cylinders can be selected in each batch, heat treatment is continuously carried out, each time, a single gas cylinder enters the furnace, and the stepping time refers to the interval time between the front gas cylinder and the rear gas cylinder entering the heat treatment furnace); after the temperature of the seamless steel liner of the gas cylinder in a quenching furnace reaches 860-880 ℃, the seamless steel liner enters a quenching tank through a conveying line, the seamless steel liner rotates by itself, the rotating speed is 20-30 r/min, quenching liquid is sprayed from the upper part, the effect of quickly cooling is achieved, the roundness (namely the difference between the maximum outer diameter and the minimum outer diameter on the same section) of the seamless steel liner after quenching and tempering heat treatment is not more than 2% of the average outer diameter of the section, and the straightness is not more than 0.15% of the total length; the metallographic structure is a tempered sorbite, the grain size is more than or equal to grade 6, and a metallographic picture is shown in appendix 2;

preparing epoxy resin glue solution according to the proportion, wherein the epoxy resin: curing agent: defoaming agent: a toughening agent: the mass ratio of the accelerator is 100:90:1:15:1, and the principle of compounding a small amount of glue is adopted. The glue preparation epoxy resin does not exceed 5kg each time, and the glue solution is fully stirred for not less than 3 minutes. The proportion can prevent air from being doped in the epoxy resin and generate multiple holes, reduce the brittleness of the bearing layer, increase the toughness, improve the bearing strength, obtain good heat-resistant, water-resistant and corrosion-resistant performances, artificially control the curing speed and ensure that sufficient time is available for finishing winding work.

And fourthly, connecting the seamless steel inner container (1) with winding equipment, pouring the glue solution into a glue groove, introducing the carbon fibers into a filament winding head on the winding equipment after the carbon fibers pass through the glue groove, setting the number of the carbon fibers to be 24, setting the pretightening force to be 10N, and preparing for winding. Winding according to the set program and the number of carbon fibers. During winding, when the carbon fiber passes through the glue groove, glue solution in the glue groove is attached to the carbon fiber and is wound on the bottle body together, the rotating speed of the gas bottle is 20r/min, and the advancing speed of the trolley is as follows: 9844mm/min, finishing carbon fiber winding, and cutting off a joint to form a pressure bearing layer.

Fifthly, leading the glass fiber into a filament winding head on winding equipment after passing through a glue groove, wherein the number of the glass fiber is 24, and preparing for winding. Winding according to the set program and the number of the fibers. During winding, when the glass fiber is passed through the glue groove, the glue solution in the glue groove is attached to the glass fiber and is wound on the bottle body together, the rotating speed of the gas bottle is 20r/min, and the advancing speed of the trolley is as follows: 9844mm/min, scraping the redundant glue solution by a scraper to form a protective layer, and attaching a gas cylinder label on the protective layer.

Sixthly, transferring the wound gas cylinder into a curing furnace for drying and curing, and paying attention to monitoring the curing temperature to prevent temperature abnormity (overhigh or overlow).

And connecting the solidified gas cylinder into a water jacket cover, tightly connecting, pressurizing for 60s, pressurizing for 120s, and performing water pressure test. The total expansion, elastic expansion, residual expansion rate and residual expansion rate of the gas cylinder are calculated to be less than 5%. And transferring the qualified gas cylinder to a drying procedure.

And (v) inverting the tested bottle to drain the water in the gas bottle, and purging the interior of the gas bottle by using steam.

Ninthly, cleaning glue solution residue, dirt on the inner surface and the outer surface and damage.

The steps comprise that the two ends of a seamless steel pipe are processed into a bottle shoulder and a bottle neck through hot spinning, then the seamless steel inner container which can be connected with the end plug in a threaded manner is manufactured through quenching and tempering heat treatment and internal and external thread processing, and then whether the seamless steel inner container is qualified or not is verified through hardness detection, water pressure test, nondestructive testing and the like. The high-strength carbon fiber is wound on the seamless steel inner container, customized winding equipment is generally adopted, and the seamless steel inner container is connected to a winding machine by means of a special fixture. The key points of the invention are that a large-diameter seamless steel inner container is adopted, carbon fiber and epoxy resin are wound and cured to form a bearing layer, and glass fiber and epoxy resin are wound and cured to form a protective layer. The initial spiral angle of winding is not less than 60 degrees, the pretightening force of the high-strength fibers is applied, the uniformity of stress states of the fibers among layers in the inflating process can be more reasonably distributed by combining the uniform increase of the spiral angle of winding and the forward and reverse alternate and cross winding, and less fibers are realized to achieve a more ideal reinforcing effect.

The large-diameter seamless steel inner container annularly wound gas cylinder manufactured by the manufacturing steps structurally comprises a hot spinning necking seamless steel inner container and a composite material pressure bearing layer formed by winding and curing carbon fibers on the outer wall of the inner container, a front end plug and a rear end plug are connected by means of internal threads of bottle necks at two ends, an air inlet valve, an air outlet valve and a sewage discharge device are arranged on the rear end plug, a safety discharge device is arranged on the front end plug or the rear end plug, and a protective layer is additionally arranged outside the carbon fiber composite material pressure bearing layer. The protective layer has the function of preventing impact damage from cutting off carbon fibers in the composite material reinforced pressure bearing layer, so that local fatigue failure points are formed, and the compression-resistant compensation effect of the whole composite material pressure bearing layer on the liner is failed.

The large-volume steel inner container is annularly provided with a carbon fiber wound gas cylinder, and the inner container is made of a large-diameter seamless steel pipe through the working procedures of spinning, heat treatment, thread machining and the like, so that the inner container can bear the explosion pressure which is 1.25 times of the nominal working pressure of the wound gas cylinder; the outer surface of the steel inner container adopts high-strength carbon fibers to enhance the bearing capacity of the seamless steel inner container, and the carbon fiber bearing layer needs to bear the bursting pressure which is 1.25 times of the nominal working pressure of the winding gas cylinder. The combined winding process of orthogonal winding and cross winding is adopted, so that the carbon fibers bear radial stress and axial stress, the stress among all layers of carbon fibers in the winding is strengthened and reasonably distributed, meanwhile, the gaps among the carbon fibers are filled with epoxy resin, and after the resin is cured, the orthogonal winding and cross winding carbon fibers are integrated, the structural characteristics of the relevance and the consistency of mutual compensation are strengthened, and the elastic deformation generated in the process of repeatedly filling and releasing high-pressure gas in the liner is strictly controlled within a theoretical standard value.

Fig. 6 is a schematic view of a wrapped gas cylinder structure of the wrapped gas cylinder tube bundle container according to the present invention. The drawing comprises a rear bottle stopper 9, a rear bottle stopper 10, a steel liner 11, a carbon fiber winding pressure-bearing layer 12, a glass fiber winding protective layer 13 and a front bottle stopper. Wherein, a bearing layer is arranged outside the steel inner container 10, a protective layer is arranged outside the bearing layer, the bearing layer comprises a carbon fiber winding bearing layer 11, the protective layer comprises a glass fiber winding protective layer 12, one section of a steel inner container 10 is screwed and fixed with a front bottle stopper 13 through internal threads, the other end is screwed and fixed with a rear bottle stopper 9, wherein, the carbon fiber winding bearing layer 11 adopts a combined winding procedure of orthogonal winding and cross winding, so that the carbon fiber can bear radial stress and axial stress, the stress among each layer of carbon fiber in the winding is strengthened and reasonably distributed, meanwhile, gaps among the carbon fibers are filled with epoxy resin, after the resin is cured, the orthogonally wound and cross-wound carbon fibers are integrated, the structural characteristics of relevance and consistency of mutual compensation are enhanced, and the elastic deformation generated in the process of repeatedly filling and releasing high-pressure gas in the liner is strictly controlled within a theoretical specification value.

Fig. 7-8 are schematic diagrams of connection between a wound gas cylinder and a rear end plate of the wound gas cylinder tube bundle container and connection between a wound gas cylinder and a front end plate of the wound gas cylinder tube bundle container according to the present invention. The drawing comprises a rear end plate 1, a winding gas cylinder 5, a front end plate 6, a front connecting flange 7, a flange plate 14, a pressing block I15, a pressing block II 16 and a box door 17. Fig. 10 is a schematic view of a flange structure of a wrapped gas cylinder tube bundle container according to the present invention; fig. 11-12 are schematic structural diagrams of a pressing block i and a pressing block ii of the gas cylinder tube bundle wrapped container according to the invention. The novel anti-rotation structure of the high-pressure thin-wall gas storage and transportation cylinder is adopted in the drawing, so that circumferential rotation and axial movement are prevented in the process of winding the gas cylinder and transporting books. Specifically, the both ends of winding gas cylinder are connected with front end flange 7 and anti-rotation combination flange 2 respectively, and front end flange passes through bolted connection front end plate, and anti-rotation combination flange comprises ring flange 14, compact heap I15, compact heap II 16, fastens compact heap II 16 and ring flange 14 through hexagon socket head cap screw, connects winding gas cylinder 5 after the fastening, leans on the back soon, fastens compact heap I15 and compact heap II 16 through hexagon socket head cap screw, and reuse bolt is fixed ring flange 14 on rear end plate 1. The front end plate 6 is connected with the container type box body by bolts; the rear end plate 1 is fixedly connected with the container type box body in a welding mode.

Fig. 9 is a schematic structural view of a door of a wrapped gas cylinder tube bundle container according to the present invention. The left side, the right side and the bottom of the container type frame are provided with side plates and a movable shutter 3, the upper end of the container type frame is provided with tarpaulin or a top plate 8, and the side plates and the tarpaulin form a closed box body. 1.5mm steel sheet has all been welded to the side and the bottom of tube bank formula container, can play the waterproof effect of fire prevention, also can block the grit simultaneously and splash in the transportation, can effectual protection gas cylinder not impaired, the life of gas cylinder has also been prolonged, tube bank formula container top adopts 1.5 mm's steel top or adopts fire prevention waterproof and corrosion-resistant tarpaulin as the capping, guarantee from the top that the winding gas cylinder does not receive the influence that the grit splashes, side-mounting's mobilizable shutter can accelerate the flow of inside air when tube bank formula container inside temperature is higher, realize rapid cooling.

The tube bundle container disclosed by the invention is composed of a large-volume steel liner ring carbon fiber wound gas cylinder and a frame, which are light in weight and high in volume-weight ratio, the weight-volume ratio of the large-volume steel liner ring carbon fiber wound gas cylinder is reduced by 60% compared with that of a steel seamless gas cylinder, and the tube bundle container can be filled with more media on the premise of the same road load limitation, taking hydrogen filling as an example, and the total volume, filling quality and self weight of the tube bundle container are shown in the following table.

The total volume is increased by 45.7%;

the mass of the loaded hydrogen is increased by 47.1 percent;

the dead weight is reduced by 17 percent.

The tube bundle container is of a closed structure, the side surface and the bottom of the tube bundle container are welded with 1.5mm steel plates, the effects of fire prevention and water prevention can be achieved, gravel splashing can be prevented in transportation, the gas cylinder can be effectively protected from being damaged, the service life of the gas cylinder is prolonged, and the tube bundle container adopts a fireproof, waterproof and corrosion-resistant tarpaulin as a capping, so that the overall weight can be further reduced. The side-mounted movable shutter can accelerate the flow of the internal air when the temperature inside the tube bundle container is higher, so that the rapid cooling is realized. The flexible connection structure of the spiral pipeline is adopted between the pipeline and the cylinder valve, the stability of the pipeline system is better, and gas leakage can be prevented under the condition of severe vibration.

The terms "first" and "second" as used herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another, unless otherwise specified. Similarly, the appearances of the phrases "a" or "an" in various places herein are not necessarily all referring to the same quantity, but rather to the same quantity, and are intended to cover all technical features not previously described. Similarly, modifiers similar to "about", "approximately" or "approximately" that occur before a numerical term herein typically include the same number, and their specific meaning should be read in conjunction with the context. Similarly, unless a specific number of a claim recitation is intended to cover both the singular and the plural, and embodiments may include a single feature or a plurality of features.

The embodiments described in the specification are only preferred embodiments of the present invention, and the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit the present invention. Those skilled in the art can obtain technical solutions through logical analysis, reasoning or limited experiments according to the concepts of the present invention, and all such technical solutions are within the scope of the present invention.

Claims

1. A wrapped gas cylinder tube bundle container, comprising: the carbon fiber winding gas cylinder comprises a front end plate, a rear end plate and 9 large-volume steel inner containers, wherein the two ends of the winding gas cylinder are respectively connected with a front end connecting flange and a novel anti-rotation combined flange, the anti-rotation combined flange consists of a flange plate, a compression block I and a compression block II, the compression block II is fastened with the flange plate through an inner hexagonal bolt, the winding gas cylinder is connected after the compression block II is fastened, the compression block I is fastened with the compression block II through the inner hexagonal bolt after the compression block I is rotated, and the flange plate is fixed on the rear end plate through a bolt;

the large-volume steel liner annular carbon fiber wound gas cylinder comprises a steel liner, a pressure-bearing layer, a protective layer, a front end plug and a rear end plug;

the front end plug is connected with a rear end safety device, and the rear end plug is provided with a connecting pipeline; the gas cylinder can be filled with and discharged with media through the bottle plug, and the outer diameter of the large-volume steel inner container towards the inner container of the carbon fiber wound gas cylinder is 719 mm;

the rated total volume of the gas cylinders of the wound gas cylinder tube bundle type container reaches 37m³。

2. The wrapped gas cylinder tube bundle container according to claim 1, wherein the connecting line is a flexible connecting structure.

3. A wrapped gas cylinder bundle container as claimed in claim 2 wherein the flexible connection is a helical structure.

4. The wrapped gas cylinder tube bundle container according to claim 2, wherein the flexible connecting structure is further provided with a protective layer, and the protective layer is made of rubber material.

5. The wrapped gas cylinder tube bundle container according to claim 2, wherein the flexible connecting structure is a connecting pipe member having a plurality of wrinkles formed on a surface thereof.

6. A wrapped gas cylinder bundle container as claimed in claim 3 wherein the spiral formation includes spaced spiral projections and spiral grooves, the spiral grooves being arranged to engage one another when collapsed.

7. A wrapped gas cylinder bundle container according to any one of claims 1 to 6, wherein the high volume steel liner hoop carbon fibre wrapped gas cylinder comprises: the steel liner is externally provided with a bearing layer, a protective layer is arranged outside the bearing layer, the bearing layer comprises a carbon fiber winding bearing layer, the protective layer comprises a glass fiber winding protective layer, one section of the steel liner is screwed and fixed with the front end cover through internal threads, the other end of the steel liner is screwed and fixed with the rear end cover, and the carbon fiber winding bearing layer adopts a combined winding process of orthogonal winding and cross winding, so that the carbon fiber can bear both radial stress and axial stress; the roundness (namely the difference between the maximum outer diameter and the minimum outer diameter on the same section) of the steel inner container is not more than 2 percent of the average outer diameter of the section; the straightness of the steel inner container is not more than 0.15% of the total length of the steel inner container.

8. The wrapped gas cylinder tube bundle container according to claim 7, wherein the angle of the spiral wrapping is uniformly increased, and the wrapping is positive and negative alternate and cross wrapping.

9. A wrapped gas cylinder tube bundle container according to any one of claims 1 to 6, wherein 1.5mm steel plates are welded to both the sides and bottom of the tube bundle container, the top of the tube bundle container is capped with 1.5mm steel top or fire and water resistant and corrosion resistant tarpaulins, and movable shutters are installed on the sides of the tube bundle container.

10. The wrapped gas cylinder tube bundle container as claimed in claim 8, wherein the steel inner container is processed by a rotary spray heat treatment process, the metallographic structure after heat treatment is tempered sorbite, and the grain size is greater than or equal to grade 6.