CN216243533U - Long-life highly reliable gas cylinder structure - Google Patents
Long-life highly reliable gas cylinder structure Download PDFInfo
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- CN216243533U CN216243533U CN202122904811.2U CN202122904811U CN216243533U CN 216243533 U CN216243533 U CN 216243533U CN 202122904811 U CN202122904811 U CN 202122904811U CN 216243533 U CN216243533 U CN 216243533U
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Abstract
The utility model relates to the technical field of satellites and discloses a long-life and high-reliability gas cylinder structure which comprises a first inner container and a gas cylinder body, wherein the inner part of the first inner container is connected with the gas cylinder body, a secondary inner container is arranged outside the first inner container, a secondary outer layer is arranged outside the secondary inner container, and a coating is arranged outside the secondary outer layer. This high reliable gas cylinder structure of long-life, through selecting the aluminium alloy material that has good toughness and plasticity, carry out stress relief heat treatment to seamless gas cylinder after the welding, the higher titanium steel metal composite of intensity is chooseed for use to inferior inlayer, the ductile fracture condition prevents to appear, inferior skin adopts carbon-fibre composite, through the equidirectional winding, effectively prevent the inefficacy of fibre winding gas cylinder winding layer, bottle structure adopts slick and sly transition, and include the strengthening rib, effectively prevent fatigue failure, the design service life of gas cylinder has been increased, the gas cylinder connects the design to consider to connect sealing performance, adopt seal gasket, the mode that screw thread and welding combined together, the sealed effect of multistage reinforcing.
Description
Technical Field
The utility model relates to the technical field of satellites, in particular to a long-life and high-reliability gas cylinder structure.
Background
The gas cylinder is a movable pressure container which is used for containing media at normal ambient temperature, has the temperature of minus 40-60 ℃, the nominal volume range of 0.4-3000L, the nominal pressure range of 0.2-35 MPa and the product of pressure and volume of more than or equal to 1.0 MPa.L, and can contain media comprising compressed gas, liquefied gas, dissolved gas, liquid at the temperature of less than 60 ℃ and mixed gas. The current gas cylinder category is mainly composed of seamless gas cylinders, welded heat-insulating gas cylinders, wound gas cylinders and gas cylinders filled with fillers.
The gas cylinder is under pressure and has the risk of explosion, and the contained medium is possibly combustible or toxic, once leakage happens, safety accidents such as fire hazard, personnel poisoning and the like can be caused. Therefore, the design, form experiment, manufacture, filling, transportation, storage, use, etc. of the gas cylinder need to meet certain requirements, wherein the gas cylinder design is an important link in the life cycle of the gas cylinder. For the pressure-bearing gas cylinder, the failure mode is mastered, effective prevention measures are taken in the construction stage, and the key point for ensuring the intrinsic safety of the product is achieved. Although the gas cylinder has a simple structure, under the condition of complex service conditions, the gas cylinder not only bears the pressure corrosion and other effects caused by an internal medium, but also bears the mechanical effect, the chemical effect, the thermal effect, the optical effect and the like of an external environment, so that the design of the gas cylinder needs to consider a plurality of failure modes, including brittle fracture, ductile fracture, fatigue fracture, instability failure, corrosion fracture under the action of stress, failure of a fiber gas cylinder winding layer, thermal insulation failure of a low-temperature heat-insulation gas cylinder and the like.
Aiming at the defects of the prior art, the utility model provides a long-life and high-reliability gas cylinder structure, which has the advantages of high structural strength, corrosion resistance and the like, and solves the problems of cracking, non-corrosion resistance, cracking after corrosion and the like of the gas cylinder caused by stress.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Aiming at the defects of the prior art, the utility model provides a long-life and high-reliability gas cylinder structure, which has the advantages of high strength, good sealing performance and the like, and solves the problems of cracking, non-corrosion resistance and cracking after corrosion of the gas cylinder caused by stress.
(II) technical scheme
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a high reliable gas cylinder structure of long-life, includes first inner bag and gas cylinder body, the inside and gas cylinder body handing-over of first inner bag, first inner bag outside is provided with time inner bag, time inner bag outside is provided with time skin, time skin outside is provided with the coating, and the gas cylinder includes five layers altogether, and the first layer is first inner bag, and the use material is the aluminum alloy, and thinnest wall thickness is greater than 2mm, and first inner bag inner structure contains four strengthening ribs along circumferencial direction or axial evenly distributed, can help increasing mechanical strength, and slick and sly structure is adopted at the upper and lower both ends of bottle, and the second floor is time inner bag, for stainless steel and titanium alloy metal composite, leans on the inlayer to be the stainless steel.
Preferably, a sealing gasket is arranged on one side of the gas cylinder, a gas cylinder connector is arranged on one side of the sealing gasket, the gas cylinder connector is screwed with the gas cylinder body in a threaded manner, the gas cylinder connector is connected with the gas cylinder body in a threaded manner, then, a vacuum electron beam welding mode is adopted for connection, heat treatment needs to be carried out after the vacuum electron beam welding, the temperature of the vacuum heat treatment is 150-200 degrees, the heat preservation time is 1-2 hours, and the stress is eliminated.
Compared with the prior art, the utility model provides a long-life and high-reliability gas cylinder structure, which has the following beneficial effects:
1. this high reliable gas cylinder structure of long-life through selecting the aluminium alloy material that has good toughness and plasticity, carries out stress relief thermal treatment to seamless gas cylinder after the welding, and simultaneously, the higher titanium steel metal composite of intensity is chooseed for use to inferior inlayer, prevents the ductile fracture condition from appearing, and inferior skin adopts carbon-fibre composite, through the not equidirectional winding, effectively prevents the inefficacy of fibre winding gas cylinder winding layer.
2. This high reliable gas cylinder structure of long-life, bottle structure adopt slick and sly to contain the strengthening rib, effectively prevent fatigue failure, increased the design life of gas cylinder, gas cylinder connects the design and considers connecting the sealing performance, adopts seal gasket, screw thread and the mode that the welding combined together, sealed effect of multistage reinforcing.
Drawings
Fig. 1 is a schematic structural view of the gas cylinder body of the utility model.
Wherein: 1. a gas cylinder connector; 2. sealing gaskets; 3. a first inner container; 4. a secondary inner container; 5. a secondary outer layer; 6. and (4) coating.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a long-life and highly reliable gas cylinder structure includes a first inner container 3 and a gas cylinder body, the inside of the first inner container 3 is connected with the gas cylinder body, a secondary inner container 4 is arranged outside the first inner container 3, a secondary outer layer 5 is arranged outside the secondary inner container 4, and a coating 6 is arranged outside the secondary outer layer 5.
Through the technical scheme, the gas cylinder comprises five layers, wherein the first layer is the first inner container 3, the used material is aluminum alloy, the thinnest wall thickness is more than 2mm, the inner structure of the first inner container 3 comprises four reinforcing ribs which are uniformly distributed along the circumferential direction or the axial direction and can contribute to increasing the mechanical strength, the upper end and the lower end of the cylinder body adopt smooth structures, the second layer is the secondary inner container 4 which is a composite material of stainless steel and titanium alloy metal, the inner layer is stainless steel, the outer layer is titanium alloy, titanium has good structural strength due to excellent corrosion resistance, the steel has good structural strength, the corrosion resistance and the structural strength can be obviously enhanced, the third layer is the secondary outer layer 5 which is a composite material of non-metal composite material carbon fiber and epoxy resin, the specific strength and the specific modulus of the composite material are several times larger than those of the inner layer, and the gas cylinder also has excellent chemical stability, wear resistance, heat resistance, fatigue resistance, creep resistance and electric insulativity, the secondary outer layer 5 is made of carbon fiber and epoxy resin composite materials, the winding is wound along the cylinder ring, the number of layers is larger than two, the angle of the first layer is +80 to +90 degrees, the angle of the second layer is-80 to-90 degrees, and each layer is wound in a direction crossed with the previous layer. Then spiral winding is carried out, the number of layers is larger than two, the angle of the first layer is +30 to +40 degrees, the angle of the second layer is-30 to-40 degrees, each layer is wound with the previous layer in a crossed mode, and the fourth layer is a coating 6 to prevent external corrosive media from entering.
Specifically, a sealing gasket 2 is arranged on one side of the gas cylinder, a gas cylinder connector 1 is arranged on one side of the sealing gasket 2, and the gas cylinder connector 1 is screwed with the gas cylinder body through threads.
Through the technical scheme, the gas cylinder connector 1 is connected with the gas cylinder body through threads, then the gas cylinder connector is connected in a vacuum electron beam welding mode, heat treatment needs to be carried out after the vacuum electron beam welding, the temperature of the vacuum heat treatment is 150-200 degrees, the heat preservation time is 1-2 hours, stress is eliminated, the gas cylinder connector 1 and the gas cylinder are sealed through the sealing gasket 2, and the gasket material is rubber or polytetrafluoroethylene, nylon and other materials.
When using, this high reliable gas cylinder structure of long-life through selecting the aluminium alloy material that has good toughness and plasticity, carries out stress relief thermal treatment to seamless gas cylinder after the welding, and simultaneously, the higher titanium steel metal composite of intensity is chooseed for use to inferior inlayer, prevents the ductility fracture condition, and inferior outer 5 adopts carbon-fibre composite, through the not equidirectional winding, effectively prevents the inefficacy of fibre winding gas cylinder winding layer.
This high reliable gas cylinder structure of long-life, bottle structure adopt slick and sly to contain the strengthening rib, effectively prevent fatigue failure, increased the design life of gas cylinder, gas cylinder connects the design and considers connecting sealing performance, adopts seal gasket 2, screw thread and the mode that the welding combined together, sealed effect of multistage reinforcing.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. The utility model provides a high reliable gas cylinder structure of long-life, includes first inner bag (3) and gas cylinder body, its characterized in that: the gas cylinder is characterized in that the inside of the first inner container (3) is connected with the gas cylinder body, the secondary inner container (4) is arranged outside the first inner container (3), the secondary outer layer (5) is arranged outside the secondary inner container (4), and the coating (6) is arranged outside the secondary outer layer (5).
2. A long-life highly reliable gas cylinder structure according to claim 1, characterized in that: one side of the gas cylinder is provided with a sealing gasket (2), one side of the sealing gasket (2) is provided with a gas cylinder connector (1), and the gas cylinder connector (1) is screwed with the gas cylinder body in a threaded manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122904811.2U CN216243533U (en) | 2021-11-25 | 2021-11-25 | Long-life highly reliable gas cylinder structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122904811.2U CN216243533U (en) | 2021-11-25 | 2021-11-25 | Long-life highly reliable gas cylinder structure |
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| Publication Number | Publication Date |
|---|---|
| CN216243533U true CN216243533U (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122904811.2U Active CN216243533U (en) | 2021-11-25 | 2021-11-25 | Long-life highly reliable gas cylinder structure |
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| CN (1) | CN216243533U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116972327A (en) * | 2022-04-24 | 2023-10-31 | 江苏申强特种设备有限公司 | Inside and outside acid-alkali-resistant wear-resistant air storage tank and processing method |
| CN117548990A (en) * | 2023-11-07 | 2024-02-13 | 沈阳欧施盾新材料科技有限公司 | Processing method of carbon fiber reinforced aluminum matrix composite high-pressure gas cylinder nozzle sleeve |
-
2021
- 2021-11-25 CN CN202122904811.2U patent/CN216243533U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116972327A (en) * | 2022-04-24 | 2023-10-31 | 江苏申强特种设备有限公司 | Inside and outside acid-alkali-resistant wear-resistant air storage tank and processing method |
| CN117548990A (en) * | 2023-11-07 | 2024-02-13 | 沈阳欧施盾新材料科技有限公司 | Processing method of carbon fiber reinforced aluminum matrix composite high-pressure gas cylinder nozzle sleeve |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220623 Address after: 100000 floor 4, building 24, yard 68, Beiqing Road, Haidian District, Beijing 0009 Patentee after: Sky sky (Beijing) Space Technology Co.,Ltd. Address before: 100000 No. 1222, 1st floor, building 4, No. 75, Suzhou street, Haidian District, Beijing Patentee before: Beijing Yuhang Tianchi Power Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |