High pressure welding cylinder

Abstract

The application discloses a high-pressure welding gas cylinder and belongs to the technical field of pressure containers, and has the technical scheme as follows: an upper shell, a lower shell connected with the upper shell, an inner liner body matched with the inside of the upper shell, a flexible film connected with the inner liner body, a joint assembly installed and connected with the upper shell and the inner liner body, the joint assembly comprising a joint seat, a fastening nut and a sealing element, the sealing element being arranged between the fastening nut and the inner liner body, and the fastening nut being threadedly connected with the joint seat, a nozzle arranged on the lower shell, wherein the joint seat is provided with an expansion part arranged between the upper shell and the inner liner body. The application has higher structural stability and sealing performance between the joint seat and the inner liner body and the outer shell.

Description

Technical Field

[0001] This application belongs to the field of pressure vessel technology, and in particular relates to a high-pressure welded gas cylinder. Background Technology

[0002] Currently, high-pressure gas cylinders are widely used in various sectors of the national economy, including industrial and mining production, construction, transportation, marine, aviation, medical, and military industries. The capacity, wall thickness, manufacturing process, and materials of a high-pressure gas cylinder all affect its performance.

[0003] Typically, gas storage containers are needed to store inert gases such as nitrogen and to release the stored gas as needed. However, these gas cylinders generally use composite tanks formed by a plastic liner and a metal body, thus requiring improvements to the joints and the connection structure between the inner and outer layers. Utility Model Content

[0004] The purpose of this application is to address the aforementioned technical problems by providing a high-pressure welded gas cylinder that provides high structural stability and sealing between the connector seat, the inner liner, and the outer shell.

[0005] This application provides a high-pressure welded gas cylinder, comprising: Upper casing; The lower housing is connected to the upper housing. The inner liner is adapted to the interior of the upper shell; A flexible membrane is connected to the inner liner. A connector assembly is installed and connected to the upper housing and the inner liner. The connector assembly includes a connector seat, a fastening nut, and a seal. The seal is placed between the fastening nut and the inner liner. The fastening nut and the connector seat are threaded together. The nozzle is located on the lower housing; The connector seat is provided with an extension portion, which is located between the upper shell and the inner liner.

[0006] The upper and lower shells are welded together, and both are made of stainless steel, aluminum alloy, or other metals, providing high strength for the gas cylinder as a whole. The inner liner is made of plastic, resin, or other materials and fits inside the upper shell. The flexible membrane is made of rubber, and the ends of the flexible membrane and the inner liner are joined by laser welding, hot melt welding, ultrasonic welding, or bonding, forming a storage cavity. A connector assembly connects the inner liner to the outer shell, facilitating gas delivery. The connector seat is fixed to the upper shell via an extension. The upper shell and the inner liner are fastened together by a fastening nut. The sealing performance between the inner liner and the connector is improved by a sealing element, such as a rubber sealing ring. The connector and the upper shell are connected by welding or thread. When a threaded connection is used, the upper shell and the connector are sealed by a rubber sealing ring. The nozzle and the lower shell are connected by welding or thread. When the lower shell and the nozzle are threaded, the lower shell and the nozzle are sealed by a rubber sealing ring. The nozzle facilitates the discharge of gas from the other side of the flexible membrane when the gas cylinder is filled or released.

[0007] Furthermore, the liner body includes: The protrusion is located on the outer side of the inner liner and is adapted to the connector seat.

[0008] Furthermore, it also includes: The fastener is ring-shaped, and the inner liner and flexible membrane are placed between the fastener and the upper shell.

[0009] Furthermore, the fastener is provided with a groove, and the inner liner is provided with a first U-shaped protrusion that corresponds to the groove and protrudes inward.

[0010] Furthermore, the upper housing is provided with a second U-shaped protrusion that mates with the first U-shaped protrusion.

[0011] Furthermore, the seal includes: The insertion part is integrally connected with the seal; The connector seat and the inner liner are provided with a plug groove corresponding to the plug part.

[0012] Furthermore, the connector seat includes: The outer tube extends from the extension to the outside of the upper housing, and the outer tube is provided with a threaded portion.

[0013] Furthermore, a weld is provided between the upper shell and the lower shell.

[0014] The beneficial effects of this application are: 1. A storage cavity can be formed by the inner liner and the flexible membrane for storing gas.

[0015] 2. The connector seat is connected to the inner liner by a fastening nut, and the sealing performance between the inner liner and the connector seat is improved by a sealing element.

[0016] 3. The connection stability between the connector seat and the inner liner is improved by the extension and protrusion, and the structural stability between the connector seat and the upper shell is further improved by welding between the connector seat and the upper shell. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the gas cylinder of this application; Figure 2 This is a cross-sectional structural diagram of the gas cylinder of this application; Figure 3 For the purposes of this application Figure 2 A magnified view of point A; Figure 4 For the purposes of this application Figure 2 A magnified view of point B; In the figure, the reference numerals are as follows: 100, upper shell; 110, second U-shaped protrusion; 200, lower shell; 300, inner liner; 310, protrusion; 320, first U-shaped protrusion; 330, insertion groove; 400, flexible membrane; 500, connector assembly; 510, connector seat; 511, extension; 512, outer tube; 513, threaded part; 520, fastening nut; 530, seal; 531, insertion part; 600, nozzle; 700, fixing part; 710, groove; 800, weld. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0019] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0020] The embodiments of this application are described in detail below with reference to the accompanying drawings, through specific examples and application scenarios.

[0021] Example 1: like Figures 1-4 As shown in the figure, this application provides a high-pressure welded gas cylinder, including: Upper shell 100; The lower housing 200 is connected to the upper housing 100; The inner liner 300 is adapted to the interior of the upper shell 100; The flexible membrane 400 is connected to the inner liner 300; The connector assembly 500 is installed and connected to the upper housing 100 and the inner liner 300. The connector assembly 500 includes a connector seat 510, a fastening nut 520, and a sealing element 530. The sealing element 530 is placed between the fastening nut 520 and the inner liner 300. The fastening nut 520 and the connector seat 510 are threadedly connected. Nozzle 600 is placed on the lower housing 200; The connector seat 510 is provided with an extension part 511, which is located between the upper housing 100 and the inner liner 300.

[0022] The upper shell 100 and the lower shell 200 are welded together. The upper shell 100 and the lower shell 200 are made of stainless steel, aluminum alloy, or other metal materials, providing high strength for the gas cylinder as a whole. The inner liner is made of plastic, resin, or other materials and fits inside the upper shell 100. The flexible membrane 400 is made of rubber. The ends of the flexible membrane 400 and the ends of the inner liner are connected by laser welding, hot-melt welding, ultrasonic welding, or bonding, allowing the inner liner and the flexible membrane 400 to form a storage cavity. The inner liner 300 is connected to the outer shell of the upper shell 100 via a connector assembly 500, facilitating the inflow and outflow of gas. The connector seat 510 is fixed to the upper shell 100 via an extension part 511. The connector seat 510 and the inner liner are fastened together by a fastening nut 520. The sealing performance between the inner liner and the connector seat 510 is improved by a sealing element 530, which is made of rubber sealing rings, etc. The connector seat 510 is welded or threaded to the upper housing 100. When a threaded connection is used, the upper housing 100 and the connector seat 510 are sealed by a rubber sealing ring. The nozzle 600 and the lower housing 200 are welded or threaded together. When the lower housing 200 and the nozzle 600 are threaded together, the lower housing 200 and the nozzle 600 are sealed by a rubber sealing ring. The nozzle 600 facilitates the discharge of gas from the other side of the flexible membrane 400 when the gas cylinder is filled with gas.

[0023] Example 2: like Figure 2 , Figure 4As shown, this application embodiment provides a high-pressure welded gas cylinder, which, in addition to including the above-mentioned technical features, further includes the following: the inner liner 300 includes: The protrusion 310 is located on the outer side of the inner liner 300 and is adapted to the connector seat 510.

[0024] The protrusion 310 is integrally connected to the outer side of the inner liner 300. The protrusion 310 cooperates with the connector seat 510 to further improve the structural stability of the inner liner 300 and the connector seat 510.

[0025] Furthermore, the seal 530 includes: The insertion part 531 is integrally connected with the sealing element 530; The connector seat 510 and the inner liner 300 are provided with a plug groove 330 corresponding to the plug part 531.

[0026] The insertion part 531 is integrally formed and connected to the sealing element 530. The insertion part 531 cooperates with the insertion groove 330 to improve the sealing performance between the inner liner 300 and the connector seat 510. The sealing element 530 abuts against the connector seat 510 and the inner liner 300 on both sides of the insertion groove 330, and has high sealing performance.

[0027] Example 3: like Figure 2 , Figure 3 As shown, this application embodiment provides a high-pressure welded gas cylinder, which, in addition to the above-mentioned technical features, further includes: The fastener 700 is ring-shaped, and the inner liner 300 and the flexible membrane 400 are placed between the fastener 700 and the upper shell 100.

[0028] The fastener 700 is installed on the inner side of the inner liner 300 and the outer side of the flexible membrane 400, thereby further improving the structural stability between the inner liner 300, the flexible membrane 400 and the upper shell 100.

[0029] Furthermore, the fastener 700 is provided with a groove 710, and the inner liner 300 is provided with a first U-shaped protrusion 320 that corresponds to the groove 710 and protrudes inward.

[0030] By engaging the first U-shaped protrusion 310 with the groove 710, the movement of the fixing member 700 along the axial direction is restricted, which further improves the structural stability of the fixing member 700 to the inner liner 300, the flexible membrane 400 and the upper shell 100, and at the same time facilitates installation and positioning. The inner liner 300 and the first U-shaped protrusion 320 are integrally formed and connected.

[0031] Furthermore, the upper housing 100 is provided with a second U-shaped protrusion 110 that mates with the first U-shaped protrusion 320.

[0032] The second U-shaped protrusion 110 is integrally formed and connected to the upper shell 100. The second U-shaped protrusion 110 cooperates with the first U-shaped protrusion 320 to restrict the relative movement between the upper shell 100 and the inner liner in the axial direction, thereby further improving the structural stability between the upper shell 100 and the inner liner. When the inner liner is installed, it is pressed into the upper shell 100 by pressure. When pressed in, the second U-shaped protrusion 110 undergoes slight deformation.

[0033] Example 3: like Figure 1 , Figure 2 As shown, this application embodiment provides a high-pressure welded gas cylinder, which, in addition to the above-mentioned technical features, further includes the following: the connector 510 includes: The outer tube portion 512 extends from the extension portion 511 to the outside of the upper housing 100, and the outer tube portion 512 is provided with a threaded portion 513.

[0034] The outer tube 512 is integrally connected to the connector 510. The outer tube 512 facilitates connection with gas components. The threaded part 513 is provided on the outer or inner side of the outer tube 512. The specific position of the threaded part 513 is generally set according to the requirements.

[0035] Furthermore, a weld 800 is provided between the upper housing 100 and the lower housing 200.

[0036] The upper shell 100 and the lower shell 200 are connected by welding to form a weld 800. The end of the inner liner 300 is placed inside the upper shell 100 and does not exceed the weld 800.

[0037] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0038] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A high-pressure welded gas cylinder, characterized in that, include: Upper shell (100); The lower housing (200) is connected to the upper housing (100); The inner liner (300) is adapted to the interior of the upper shell (100); A flexible membrane (400) is connected to an inner liner (300); A connector assembly (500) is installed and connected to the upper housing (100) and the inner liner (300). The connector assembly (500) includes a connector seat (510), a fastening nut (520), and a seal (530). The seal (530) is placed between the fastening nut (520) and the inner liner (300). The fastening nut (520) is threadedly connected to the connector seat (510). The nozzle (600) is placed on the lower housing (200); The connector seat (510) is provided with an extension (511), which is located between the upper housing (100) and the inner liner (300).

2. The high-pressure welded gas cylinder according to claim 1, characterized in that, The liner (300) includes: The protrusion (310) is placed on the outer side of the inner liner (300) and is adapted to the connector seat (510).

3. The high-pressure welded gas cylinder according to claim 1, characterized in that, Also includes: The fastener (700) is annular, and the inner liner (300) and the flexible membrane (400) are placed between the fastener (700) and the upper shell (100).

4. The high-pressure welded gas cylinder according to claim 3, characterized in that, The fastener (700) is provided with a groove (710), and the inner liner (300) is provided with a first U-shaped protrusion (320) that corresponds to the groove (710) and protrudes inward.

5. The high-pressure welded gas cylinder according to claim 4, characterized in that, The upper housing (100) is provided with a second U-shaped protrusion (110) that cooperates with the first U-shaped protrusion (320).

6. The high-pressure welded gas cylinder according to claim 1, characterized in that, The seal (530) includes: The insertion part (531) is integrally connected with the sealing element (530); The connector seat (510) and the inner liner (300) are provided with a plug groove (330) corresponding to the plug part (531).

7. The high-pressure welded gas cylinder according to claim 1, characterized in that, The connector (510) includes: The outer tube (512) extends from the extension (511) to the outside of the upper housing (100), and the outer tube (512) is provided with a threaded portion (513).

8. The high-pressure welded gas cylinder according to claim 1, characterized in that, A weld (800) is provided between the upper shell (100) and the lower shell (200).

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