阅读说明：本技术 缠绕气瓶管束式集装箱 (Wrapped gas cylinder tube bundle type container ) 是由 范增超 肖文凯 陈凡 赵海岚 黄国明 杜正良 邝周凌 占建新 于 2020-11-26 设计创作，主要内容包括：本发明公开了一种缠绕气瓶管束式集装箱,其特征在于,包括：前端板、后端板以及9个大容积钢质内胆环向碳纤维缠绕气瓶,所述缠绕气瓶的两端分别与前端连接法兰和新型防转组合法兰连接,所述防转组合法兰由法兰盘、压紧块Ⅰ、压紧块Ⅱ组成,通过内六角螺栓将所述压紧块Ⅱ与法兰盘进行紧固,紧固后连接所述缠绕气瓶,旋靠后,通过内六角螺栓将压所述紧块Ⅰ与所述压紧块Ⅱ进行紧固,再用螺栓将所述法兰盘固定在所述后端板上。本发明具有气瓶重容比小、容积大、重量轻,管路连接点及焊点数量少、漏点少、集装箱通风性能好等优点。(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 container ventilation performance and the like.)

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 6-9 large-volume steel inner containers, wherein 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 is composed 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 and the compression block II are fastened through the inner hexagonal bolt after the compression block I and the compression block II rotate, and the flange plate is fixed on the rear end plate through a bolt;

the rated pressure of the large-volume steel inner container annular carbon fiber wound gas cylinder is 30MPa, and the outer diameter of the inner container is 719 mm.

2. The tube bundle container for winding gas cylinders according to claim 1, wherein 1.5mm steel plates are welded on the side and the bottom of the tube bundle container, so that the tube bundle container can play a role in fire prevention and water prevention, and can block sand and stone from splashing during transportation, so that the gas cylinders can be effectively protected from being damaged, and the service life of the gas cylinders can be prolonged, the top of the tube bundle container adopts a 1.5mm steel top or a fire-proof, water-proof and corrosion-resistant steel top plate or tarpaulin as a top seal, and the wound gas cylinders are guaranteed from the top against the influence of sand and stone splashing; the tube bundle container is provided with a ventilation device for accelerating the flow of internal air and quickly performing heat exchange when the temperature in the tube bundle container is higher or lower.

3. A wrapped gas cylinder tube bundle container according to claim 1 or 2, wherein the high volume steel liner hoop carbon fiber 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 end of the steel liner is screwed and fixed with the front end cover through internal threads, and the other end of the steel liner is screwed and fixed with the rear end cover, wherein 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.

4. The wrapped gas cylinder tube bundle container according to claim 3, wherein the angle of the spiral wrapping is uniformly increased, and the wrapping is positive and negative alternate and cross wrapping.

5. The wrapped gas cylinder tube bundle container as claimed in claim 3, 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 not less than 6 grade.

6. The wrapped gas cylinder tube bundle container according to claim 2, wherein one side of the steel plate has a high heat absorption coating with good thermal conductivity to improve the heat dissipation performance of the surface of the steel plate.

7. A wrapped gas cylinder bundle container as claimed in claim 2 wherein the ventilation means comprises a venetian blind, fan means comprising a fan housing, propeller blades.

8. The wrapped gas cylinder tube bundle container according to claim 7, wherein the ventilation device is disposed on the container body, the container body includes air ports on both sides thereof, a waterproof cover is optionally disposed outside the air ports, and a venetian blind is disposed on the air ports; the shutter is used for heat exchange between the box body and the outside; the waterproof cover is used for preventing rainwater from entering the box body and guaranteeing air circulation.

9. The wrapped gas cylinder tube bundle container according to claim 8, wherein said ventilation device is disposed inside a venetian blind, a temperature sensor and a system controller are disposed inside said box, said temperature sensor is connected to said system controller; the temperature sensor detects the temperature in the box body, and transmits a signal of the temperature to the system controller, and the system controller controls the fan to realize the exchange of heat and the outside.

10. The wrapped gas cylinder tube bundle container according to claim 2, wherein the steel sheet is a cold-rolled steel sheet or a galvanized steel sheet.

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, a tube bundle type container or a long tube trailer assembled by 6 to 10 large-volume steel seamless gas cylinders with nominal working pressure of 20MPa and thickness of more than 16.5mm to 21.2mm is adopted at present, and the gas cylinder weight-volume ratio (weight-volume ratio) of the existing large-volume steel seamless gas cylinder tube bundle type container 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 small-volume wound gas cylinders with the volume of 30-450L are generally adopted to be assembled into the tube bundle type container, 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 existing tube bundle container has no active ventilation facility and poor ventilation performance, so that the temperature inside a wound gas cylinder is higher during filling, and the rated weight cannot be filled at one time.

On the premise of limited road transportation at home and abroad, how to reduce the dead weight of the gas cylinder and increase the loading capacity of the gas becomes a key problem to be solved; on the premise of one-time filling to the rated quality, the improvement of the ventilation performance of the tube bundle type container is also a problem to be solved at present. Compared with a steel gas cylinder, the large-volume wound gas cylinder has the advantages of light dead weight, small weight-volume ratio, 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 in the prior art, a tube bundle type container assembled by large-volume steel seamless gas cylinders 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 tube bundle type container assembled by small-volume wound gas cylinders is small in gas cylinder 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, high in risk in the operation process, poor in container ventilation performance and the like. Providing a 6-9 large-volume 30MPa steel liner carbon fiber hoop wound gas cylinder as a pressure-bearing container, wherein the volume of the wound gas cylinder tube bundle container is 25.8-36 m³The pressure is increased to 30MPa, the loading capacity of the winding gas cylinder tube bundle type container is increased, and compared with a steel seamless gas cylinder tube bundle type container with the pressure of 20MPa, the loading capacity of hydrogen is increased by 74.3%. 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. Simultaneously, the lightweight gas cylinder and the tube bundle type container are also greatly liftedThe transport efficiency of the gas is improved.

The both ends of winding gas cylinder are connected with front end flange 7 and novel combination flange 2 that prevents changeing respectively, prevent changeing combination flange 2 and comprise ring flange 14, compact heap I15, compact heap II 16, fasten compact heap II 16 and ring flange through hexagon socket head cap screw, connect the winding gas cylinder after the fastening, lean on the back soon, fasten compact heap I15 and compact heap II 16 through hexagon socket head cap screw, reuse bolt is fixed ring flange 14 on rear end plate 1. The axial rotation of the gas cylinder can be effectively prevented. The pipeline system is completely of a flexible structure, so that the pipeline system is more stable and is 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 winding gas cylinder is prevented from being affected by sand splashing from the top, and the safe operation of the winding gas cylinder is further ensured. The side-mounted ventilation device of the tube bundle container can accelerate the flow of the air inside the tube bundle container when the temperature inside the tube bundle container is higher or lower, and can perform heat exchange quickly.

In another preferred example, the steel plate is a cold-rolled steel plate, and the cold-rolled steel plate has high heat conductivity and fast heat dissipation.

In another preferred embodiment, the steel sheet is a galvanized steel sheet, and the steel sheet can exhibit high thermal conductivity and heat dissipation.

In another preferred embodiment, a plurality of exhaust curled edge warped plates are cut out from the steel plate through a cutting machine, the exhaust curled edge warped plates are arranged in a matrix, and the air diffusing ports formed after cutting are formed in the steel plate body below the exhaust curled edge warped plates, so that hot air can be rapidly exhausted along the exhaust curled edge warped plates after being guided out from the air diffusing ports.

In another preferred example, one side of the steel plate is provided with a high heat absorption coating with good heat conductivity, and the heat absorption coating is a high heat absorption coating with good heat conductivity. The design of the heat absorption coating can obtain good electromagnetic shielding and temperature control effects, and the heat dissipation performance of the surface of the steel plate can be further improved.

In another preferred embodiment, the ventilation device comprises a fan and a fan housing, wherein: the fan is provided with a plurality of propeller blades, helps improving the radiating speed, reaches better heat exchange effect. Optionally, the ventilation means is mounted inside a venetian blind.

In another preferred example, the ventilating device is arranged on a container body, the two sides of the container body comprise air ports, waterproof covers are optionally arranged on the outer sides of the air ports, and the movable shutters are arranged on the air ports; the shutter is used for heat exchange between the box body and the outside; the waterproof cover is used for preventing rainwater from entering the box body and guaranteeing air circulation. The box body can be internally provided with a temperature sensor and a system controller, wherein the temperature sensor is at least distributed on each gas cylinder body; the temperature sensor is connected with the system controller. The temperature in the box body is detected through the temperature sensor, the temperature signal is transmitted to the system controller, and the system controller controls the fan to transmit heat out.

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, a seamless steel pipe with the pressure of 30MPa is adopted to manufacture the steel liner, so that the volume of the gas cylinder tube bundle-wound container is 25.8-36 m 3; the pressure is increased to 30MPa, the loading capacity of the winding gas cylinder tube bundle type container is increased, and the loading capacity of hydrogen is increased by 74.3% compared with the loading capacity of a 20MPa steel seamless gas cylinder tube bundle type container;

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 inner diameter and the outer diameter of the opening of the gas cylinder are 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.

The invention has the following advantages: 1) the 30MPa large-volume steel liner annular carbon fiber wound gas cylinder has light dead weight, large volume and small weight-volume ratio; 2) 6-9 large-volume steel inner container carbon fiber hoop wound gas cylinders with the pressure of 30MPa are adopted as pressure-bearing containers, and the volume of the large-volume wound gas cylinder tube bundle type container is 25.8-36 m³More gas can be stored, and the self weight of the tube bundle type container is light, so that the transportation efficiency is improved; 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 in the transportation process of the wound gas cylinder are prevented; 5) the side and the bottom of tube bank formula container have all welded 1.5mm steel sheet, 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, has also prolonged the life of gas cylinder. The top of the tube bundle container adopts a steel top plate with the thickness of 1.5mm or fireproof, waterproof and corrosion-resistant tarpaulin as a capping, and the winding gas cylinder is ensured not to be influenced by sand splashing from the top. Side-mounted venetian blinds for elevated temperature inside a tube bundle containerOr quicken the flow of the air inside when the temperature is lower, and quickly carry out heat exchange; 6) the flexible connection structure of the spiral pipeline is adopted between the main pipeline and the cylinder valve, the stability of a pipeline system is better, and gas leakage caused by cracks, fracture and deformation can be avoided 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, prevent changeing combination flange, 3, venetian blind, 4, box, 5, winding gas cylinder, 6, front end plate, 7, preceding flange, 8, tarpaulin, 9, preceding bottle plug, 10, steel inner bag, 11, carbon fiber winding bearing layer, 12, glass fiber winding protective layer, 13, back bottle plug, 14, ring flange, 15, compact heap I, 16, compact heap II, 17, chamber 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 tube bundle type container pipeline is of a flexible structure, so that a pipeline system is more stable and is not easy to leak. Particularly, a flexible connection structure of a 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.

The large-volume steel liner annular carbon fiber winding gas cylinder 5 adopts a combined winding process of orthogonal winding and cross winding, 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 and glass fibers are filled with epoxy resin, and after the resin is cured, the orthogonal winding and cross winding carbon fibers are integrated, so that a carbon fiber pressure bearing layer can bear the explosion 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 13, a rear bottle stopper 10, a steel liner 11, a carbon fiber winding pressure-bearing layer 12, a glass fiber winding protective layer 9 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 the front bottle stopper 9 through internal threads, the other end is screwed and fixed with the rear bottle stopper 13, 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. A novel anti-rotation structure of the high-pressure thin-wall storage and transportation gas cylinder is adopted, 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. As shown in fig. 4, 5 and 9, the left and right sides 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 a tarpaulin or a top plate 8, and the side plates and the tarpaulin form a closed box body. 1.5mm steel plates are welded on the side face and the bottom of the tube bundle type 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 type container adopts a 1.5mm steel top or fireproof, waterproof and corrosion-resistant tarpaulin as a capping, and the wound gas cylinder is prevented from being affected by gravel splashing from the top; the side surface of the box body is provided with the movable shutter 3, and the inner side of the movable shutter 3 is provided with a ventilation device (not shown in the figure), so that the flow of the internal air can be accelerated when the temperature in the tube bundle container is higher or lower, and the quick heat exchange is realized.

This tube bank formula container has adopted lightweight, the high large volume steel inner bag of volume-to-weight ratio hoop carbon fiber winding gas cylinder and frame to constitute, has reduced 60% than the weight-to-volume ratio of steel seamless gas cylinder, under the prerequisite of the same road limit for load, this tube bank formula container can fill more medium to filling the hydrogen as the example, its total volume, filling quality and dead weight see the following table.

Type (B)	Operating pressure	Medium	Total volume	Filling quality	Self-weight
						Wrapped gas cylinder tube bundle type container	30MPa	Compressed hydrogen	32m3	668kg	33500kg
Steel gas cylinder tube bundle type container	20MPa	Compressed hydrogen	26m3	383kg	34300kg

The filling pressure is improved by 50%;

the total volume is increased by 23%;

the mass of the loaded hydrogen gas is increased by 74.3%;

the dead weight is reduced by 2.3 percent.

This tube bank formula container adopts closed structure, and the side has all welded 1.5mm steel sheet with the bottom, can effectually protect injuries such as ultraviolet radiation, gravel impact, chemical corrosion and sharp-pointed object fish tail, has prolonged the life of gas cylinder, and tube bank formula container has still adopted steel roof or fire prevention waterproof and corrosion-resistant tarpaulin as the capping, further guarantees the safe operation of winding gas cylinder. The side-mounted ventilation device of the tube bundle container can accelerate the flow of the air inside the tube bundle container when the temperature inside the tube bundle container is higher or lower, and can perform heat exchange quickly. Adopt the flexible connection structure of spiral pipeline between pipeline and the cylinder valve, pipeline system's stability is better, can guarantee under the condition of violent vibrations that the pipeline can not appear crackle, fracture, deformation and lead to gas leakage. The hydrogenation pressure difference of the existing hydrogenation station is small, and the low-level pressure is about 35MPa, so that the tube bundle type container can be temporarily used as a bottle group for a low-pressure station.

In another preferred embodiment, the steel sheet is a cold-rolled steel sheet having a composition of components: contains C: 0.05 to 0.3 mass%, Si: 0.6 to 3.0 mass%, Mn: 1.0-3.0 mass%, P: 0.1 mass% or less, S: 0.05 mass% or less, Al: 0.01-1 mass%, N: 0.01 mass% or less, and the balance of Fe and inevitable impurities. The cold-rolled steel plate is high in heat conduction capability and quick in heat dissipation.

In another preferred embodiment, the steel sheet is a galvanized steel sheet, and a base steel sheet of the galvanized steel sheet contains, in mass%, C: 0.0010 to 0.040%, Si: 0.2% or less, Mn: 0.1 to 0.80% and Al: 0.01 to 0.1%, the balance being iron and unavoidable impurities. The base steel sheet is galvanized on both sides thereof with an adhesion amount per side of 70g/m2 or more. The steel sheet can exhibit high thermal conductivity and heat dissipation.

In another preferred embodiment, a plurality of exhaust curled-edge wanes are cut out from the steel plate through a cutting machine, the exhaust curled-edge wanes are arranged in a matrix, air diffusing ports are formed in the steel plate body below the exhaust curled-edge wanes after cutting, the exhaust curled-edge wanes are processed into a tilted shape through a roller machine, the end plate body connected with the exhaust curled-edge wanes and the steel plate body is an arc-shaped surface, the front end plate surface of the exhaust curled-edge wanes and the steel plate body are arranged horizontally, a plurality of heat dissipation holes are punched in the exhaust curled-edge wanes in the forward direction, and the heat dissipation holes are formed in the exhaust curled-edge wanes in a downward concave mode, so that hot air can be discharged quickly along the exhaust curled-edge wanes after being guided out from the air.

In another preferred embodiment, the steel plate has a high heat absorption coating with good thermal conductivity on one side, and the heat absorption coating is a high heat absorption coating with good thermal conductivity. The heat absorbing coating can absorb 92-98% of heat of the heating body, and the heat is dissipated through the other side of the steel plate, and the heat dissipation degree can be designed according to the requirements of customers. The design of the heat absorption coating can obtain good electromagnetic shielding and temperature control effects, and the heat dissipation performance of the surface of the steel plate can be further improved.

In another preferred embodiment, the ventilation means comprises a movable shutter, a fan means comprising a fan housing, a propeller blade; the ventilating device helps to increase the heat dissipation speed and achieve better heat exchange effect, and preferably, the tube bundle type container side surface mounting ventilating device.

In another preferred embodiment, the ventilation device is disposed on the box body, preferably, the ventilation device is disposed at the side of the tube bundle container, and includes a movable louver, a fan device, a fan housing, a temperature sensor, and a system controller. The box both sides have the gas port, the gas port outside is equipped with the buckler, the buckler lower extreme shelters from the gas port lower extreme completely, the shutter forms the convection current with the external world with the box and takes a breath the heat dissipation. Meanwhile, the waterproof cover ensures that rainwater is difficult to enter the box body, ensures that water vapor entering the box body is discharged in an air circulation mode, and is safe and reliable. The ventilation device is arranged on the inner side of the venetian blind. The box body can be internally provided with a temperature sensor and a system controller, wherein the temperature sensor is at least distributed on each gas cylinder body; the temperature sensor is connected with the system controller. The temperature in the box body is detected through the temperature sensor, the temperature signal is transmitted to the system controller, and the system controller controls the fan to transmit heat out.

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.