CN115013725A

CN115013725A - Inner container of gas pressure container

Info

Publication number: CN115013725A
Application number: CN202210797120.3A
Authority: CN
Inventors: 徐存新; 唐元清; 仲小宇; 夏明�; 董怀庆
Original assignee: Changzhou Shenying Carbon Fiber Composites Co ltd
Current assignee: Changzhou Shenying Carbon Fiber Composites Co ltd
Priority date: 2022-07-08
Filing date: 2022-07-08
Publication date: 2022-09-06

Abstract

The invention relates to the technical field of gas container equipment, in particular to a gas pressure container liner which is applied to gas container equipment and is provided with a container cylinder body and end covers arranged at two ends of the container cylinder body, wherein the end covers are fixed at two ends of the container cylinder body; the invention can ensure that the metal material has better sealing performance, less leakage risk and lower pressure bearing by the arranged metal connecting piece and the metal sealing element, and simultaneously, the container cylinder body is formed by blow molding of HDPE and is wound by carbon fiber, so that the container liner has anti-seepage capability, high-low temperature resistance and impact resistance.

Description

Inner container of gas pressure container

Technical Field

The invention relates to the technical field of containers, in particular to an inner container of a gas pressure container.

Background

1. Technical problem to be solved

At present, the materials of the cylinder body of the high-pressure gas cylinder are all metals. Some of the specialty gases can attack the metal causing a reduction in the plasticity and strength of the material and, consequently, cracking or delayed brittle failure.

At present, many enterprises develop a container with a plastic inner container to solve the corrosion phenomenon. And the carbon fiber is wound outside to ensure that the integral strength meets the use requirement. Aiming at the problems in the prior art, the invention aims to provide a novel inner container of a gas pressure container, which has the advantages of anti-seepage capability, high-low temperature impact resistance, excellent mechanical property, excellent heat conduction property, composite material layer interface bonding capability and excellent hot-forming property.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

The utility model provides a gas pressure vessel inner bag, is applied to on the gas container equipment, and this container inner bag has the vessel and sets up the end cover at the vessel both ends, the end cover is fixed at the vessel both ends, the one end inner wall of end cover is provided with pre-buried injection molding, pre-buried injection molding inboard is provided with metal seal, the metal seal outer wall is provided with metal connecting piece, just metal connecting piece sets up the top at pre-buried injection molding, the inlet port has been seted up at metal seal's middle part, an installation section of thick bamboo is installed to the lateral wall of vessel, the vessel is made by the HDPE material.

Optionally, an annular groove is formed in the end face, connected with the embedded injection molding piece, of one end of the end cover, and the cross section of the annular groove is triangular.

Optionally, the metal connecting piece is fixedly connected to the top of the embedded injection molding piece, a thread groove is formed in the inner wall of the metal connecting piece, and the metal connecting piece is installed on the outer wall of the metal sealing piece through the thread groove of the inner wall in a matched mode.

Optionally, a sealing ring is installed on one side of the outer wall of the embedded injection molding part, and the sealing ring is embedded in the inner wall of the metal connecting piece.

Optionally, the outer wall of the metal sealing element is inlaid with a first sealing ring and a second sealing ring, and the outer walls of the first sealing ring and the second sealing ring are both supported on the inner wall of the embedded injection molding element.

Optionally, the end caps are fixedly connected to two ends of the container barrel in an injection molding and integral forming manner.

Optionally, the container barrel is made of HDPE material by blow molding.

Optionally, the outer wall of the container barrel is wound with carbon fibers.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme can guarantee to adopt metal material to possess the sealing performance of preferred through the metal connecting piece and the metal seal spare that set up, it is less to reveal the risk, the pressure-bearing is lower, and the container barrel adopts HDPE blow molding simultaneously, then twine through the carbon fiber, carry out the atmospheric pressure test after the completion again, require inside atmospheric pressure to reach 1.5MPA, can keep not releasing pressure, make this container inner bag possess prevention of seepage and penetrate the ability, anti high low temperature shock-resistant ability, excellent mechanical properties, excellent heat conductivity, combined material layer interface bonding ability, excellent hot-forming formability.

(2) The container barrel body is made of HDPE materials, and the HDPE materials are adopted, so that the container barrel body made of metal materials is prevented from being corroded by part of special gas;

(3) the sealing ring ensures that the connection sealing performance between the embedded injection molding part and the metal connecting part is better, and simultaneously further strengthens the connection strength between the embedded injection molding part and the metal connecting part.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, without inventive work, other drawings can be obtained from the drawings

FIG. 1 is a schematic structural view of an inner container of a gas pressure container according to the present invention;

FIG. 2 is a front view of the inner container of the gas pressure container of the present invention;

FIG. 3 is a schematic view of an end cap structure of an inner container of a gas pressure container according to the present invention;

FIG. 4 is a cross-sectional view of the inner container of the gas pressure container according to the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4;

fig. 6 is a schematic cross-sectional view of the metal seal of the present invention.

The reference numbers in the figures illustrate:

1. a vessel cylinder; 2. an end cap; 3. embedding an injection molding part; 4. a metal connecting member; 5. a metal seal; 6. a first seal ring; 7. a second seal ring; 8. an air inlet; 9. and (6) mounting the cylinder.

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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a gas pressure container liner, which is applied to a gas container device, the container liner includes a container cylinder 1 and end caps 2 disposed at both ends of the container cylinder 1, the gas pressure container liner is formed by combining the end caps 2 and the container cylinder 1, the end caps 2 are fixed at both ends of the container cylinder 1, an embedded injection molding member 3 is disposed on an inner wall of one end of each end cap 2, a metal sealing member 5 is disposed on an inner side of the embedded injection molding member 3, a metal connecting member 4 is disposed on an outer wall of each metal sealing member 5, the metal connecting member 4 is disposed on a top of the embedded injection molding member 3, the metal connecting member 4 and the metal sealing member 5 are arranged to ensure that the metal material has good sealing performance, the leakage risk is small, the bearing pressure is low, the metal connecting member 4 is fixedly connected to the top of the embedded injection molding member 3, the inner wall of the metal connecting member 4 is provided with a thread groove, and metal connecting piece 4 matches the thread groove of installing at metal seal 5's outer wall through the inner wall, metal connecting piece 4 is connected with metal sealing piece 5 through threaded connection's mode, consequently, metal sealing piece 5 can realize dismantling and fastening installation with metal connecting piece 4, be convenient for follow-up operation uses, inlet port 8 has been seted up at metal sealing piece 5's middle part, can bulge into the air in the gas pressure container inner bag through inlet port 8, installation section of thick bamboo 9 is installed to the lateral wall of container barrel 1, through the lateral wall installation section of thick bamboo 9 at container barrel 1, conveniently use this gas pressure container inner bag, container barrel 1 is made by the HDPE material, it can corrode the container barrel 1 that the metal material was made to have avoided partial special gas to adopt the HDPE material.

In some embodiments, referring to fig. 5 and 6, an annular groove is formed in an end face, connected with the embedded injection molding part 3, of one end of the end cover 2, and the cross section of the annular groove is triangular; the end face of the end cover 2 is provided with the annular groove, so that the connection between the embedded injection molding part 3 formed by injection molding and the end cover 2 is firmer.

In some embodiments, referring to fig. 5 and 6, a sealing ring is installed on one side of the outer wall of the embedded injection molding part 3, and the sealing ring is embedded in the inner wall of the metal connecting part 4; the sealing ring that guarantees through the installation is connected the leakproofness better between pre-buried injection molding 3 and the metal connecting piece 4, and has further strengthened the joint strength between pre-buried injection molding 3 and the metal connecting piece 4 simultaneously.

In some embodiments, referring to fig. 5 and 6, a first sealing ring 6 and a second sealing ring 7 are embedded in the outer wall of the metal sealing element 5, and the outer walls of the first sealing ring 6 and the second sealing ring 7 are supported on the inner wall of the pre-buried injection molding element 3; the connection tightness between the metal sealing element 5 and the embedded injection molding element 3 is ensured through the installation of the first sealing ring 6 and the second sealing ring 7, and the material adopted by the first sealing ring 6 and the second sealing ring 7 can be one of NBR nitrile rubber, HNBR hydrogenated nitrile rubber, SIL silicone rubber, VITON fluorine rubber, FLS fluorine silicon rubber, EPDM ethylene propylene diene monomer rubber, CR chloroprene rubber, IIR butyl rubber, ACM acrylate rubber, NR natural rubber, PU polyurethane rubber and the like;

wherein, NBR nitrile rubber seal ring: it is suitable for use in medium such as petroleum-based hydraulic oil, glycol-based hydraulic oil, diester-based lubricating oil, gasoline, water, silicon grease, and silicone oil. The rubber sealing element is the most widely used rubber sealing element with the lowest cost at present. The general use temperature range is-40 to 120 ℃;

HNBR hydrogenated nitrile rubber seal ring: has better characteristics of corrosion resistance, tear resistance and compression deformation resistance, and better ozone resistance, sunlight resistance and weather resistance. Has better abrasion resistance than nitrile rubber. It is not recommended to use in solutions of alcohols, esters or aromatics. The general use temperature range is-40 to 150 ℃;

SIL silicone rubber seal ring: has better heat resistance, cold resistance, ozone resistance and atmospheric aging resistance. Has good insulating property. But the tensile strength is inferior to that of general rubbers and the oil resistance is not good. It is also suitable for various articles which are in contact with human body, such as water jug, drinking machine, etc. It is not recommended to use in most concentrated solvents, oils, concentrated acids and sodium hydroxide. The general use temperature range is-55 to 250 ℃;

VITON fluorine rubber seal ring: the high temperature resistance is better than that of silicon rubber, and the high temperature resistant silicon rubber has better weather resistance, ozone resistance and chemical resistance, and the cold resistance is poor. Has resistance to most of oil products and solvents, especially acids, aliphatic hydrocarbons, aromatic hydrocarbons and animal and vegetable oils. The use of ketones, low molecular weight esters and mixtures containing nitro groups is not recommended. The general use temperature range is-20 to 250 ℃;

FLS fluorosilicone rubber seal ring: its performance has the advantages of both fluorine rubber and silicon rubber, and it is resistant to oil, solvent, fuel oil and high and low temp. Can resist the corrosion of oxygen-containing compounds, aromatic hydrocarbon-containing solvents and chlorine-containing solvents. Exposure to ketones and brake fluid is not recommended. The general use temperature range is-50 to 200 ℃;

EPDM ethylene propylene diene monomer rubber sealing ring: has good weather resistance, ozone resistance, water resistance and chemical resistance. Can be used for alcohols and ketones, and can also be used for sealing in high-temperature water vapor environment. It is not recommended for food use or exposure to mineral oil. The general use temperature range is-55 to 150 ℃;

CR neoprene seal ring: the sunlight resistance and the weather resistance are particularly good. The lubricating oil is resistant to dilute acid and silicone grease, and has a large expansion amount in mineral oil with a low aniline point. It is easily crystallized and hardened at low temperature. The use of strong acids, nitrohydrocarbons, esters, chloroform and ketones is not recommended. The general use temperature range is-55 to 120 ℃;

IIR butyl rubber sealing ring: the air tightness is particularly good, the heat resistance, the sunlight resistance and the ozone resistance are good, and the insulating property is good: can be exposed to animal and vegetable oils or oxidates. The use with white spirit, kerosene or aromatics is not recommended. The general use temperature range is-50 to 110 ℃;

ACM acrylate rubber seal ring: the product has good G resistance to oil products, good high temperature resistance and weather resistance, but slightly poor mechanical strength, compression deformation rate and water resistance. Is not suitable for hot water, brake fluid and phosphate. The general use temperature range is-25 to 170 ℃;

NR natural rubber seal ring: has good wear resistance, elasticity, breaking strength and elongation. But is easy to age in air, becomes sticky when heated, is easy to expand and dissolve in mineral oil or gasoline, and is alkali-resistant but not strong acid-resistant. The general use temperature range is-20 to 100 ℃;

PU polyurethane rubber seal ring: the mechanical property of the polyurethane rubber is very good, and the wear resistance and the high pressure resistance of the polyurethane rubber are far superior to those of other rubbers. Aging resistance, ozone resistance and oil resistance are also quite good, but hydrolysis is easy at high temperature. The general use temperature range is-45 to 90 ℃.

In some embodiments, referring to fig. 1, fig. 2, fig. 3, and fig. 4, the end caps 2 are fixedly connected to two ends of the container barrel 1 by injection molding, so as to ensure that the end caps 2 and the container barrel 1 are an integral structure, which has better stability, prevents air leakage, and has higher integral strength.

In some embodiments, the container barrel 1 is made of HDPE material by blow molding, and the outer wall of the container barrel 1 is wound with carbon fiber; the container barrel body 1 is formed by HDPE blow molding, then is wound through carbon fibers, and then is subjected to air pressure test after the completion, the internal air pressure is required to reach 1.5MPA, and the pressure can be kept not to be released, so that the container liner has anti-permeability, high and low temperature impact resistance, excellent mechanical property, excellent heat conduction property, composite material layer interface bonding ability and excellent hot-forming property.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a gas pressure vessel inner bag, is applied to gas container equipment, and this container inner bag has vessel barrel (1) and sets up end cover (2) at vessel barrel (1) both ends, end cover (2) are fixed at vessel barrel (1) both ends, its characterized in that, the one end inner wall of end cover (2) is provided with pre-buried injection molding (3), pre-buried injection molding (3) inboard is provided with metal seal (5), metal seal (5) outer wall is provided with metal connecting piece (4), just metal connecting piece (4) set up the top at pre-buried injection molding (3), inlet port (8) have been seted up at the middle part of metal seal (5), installation section of thick bamboo (9) are installed to the lateral wall of vessel barrel (1), vessel barrel (1) is made by the HDPE material.

2. A gas pressure container liner according to claim 1, wherein: the end face, connected with the embedded injection molding piece (3), of one end of the end cover (2) is provided with an annular groove, and the cross section of the annular groove is triangular.

3. A gas pressure container liner according to claim 1, wherein: the metal connecting piece (4) is fixedly connected to the top of the embedded injection molding piece (3), a thread groove is formed in the inner wall of the metal connecting piece (4), and the metal connecting piece (4) is installed on the outer wall of the metal sealing piece (5) through the thread groove of the inner wall in a matched mode.

4. A gas pressure container liner according to claim 1, wherein: the sealing ring is installed on one side of the outer wall of the embedded injection molding part (3), and the sealing ring is embedded in the inner wall of the metal connecting part (4).

5. A gas pressure container liner according to claim 1, wherein: the outer wall of metal seal spare (5) is inlayed and is had first sealing washer (6) and second sealing washer (7), just the inner wall at pre-buried injection molding (3) is all supported to the outer wall of first sealing washer (6) and second sealing washer (7).

6. A gas pressure container liner according to claim 1, wherein: the end covers (2) are fixedly connected to two ends of the container barrel body (1) in an injection molding and integral forming mode.

7. A gas pressure container liner according to claim 1, wherein: the container barrel body (1) is made of HDPE materials through blow molding.

8. A gas pressure container liner according to claim 1, wherein: the outer wall of the container barrel (1) is wound with carbon fibers.