An accumulator optimized weld structure

By welding connecting rings and spiral connections into the welded structure of the accumulator, combined with nickel plating of the chromium-molybdenum steel shell, the problem of weld fatigue tearing was solved, the weld reinforcement and sealing performance were improved, and the installation of the pressure vessel was facilitated.

CN224326480UActive Publication Date: 2026-06-05ROTH HYDRAULICS (TAICANG) CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ROTH HYDRAULICS (TAICANG) CO LTD
Filing Date
2025-07-08
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing accumulators suffer from weld fatigue tearing issues during the manufacturing process.

Method used

The pressure vessel body and end cap are manufactured by welding a connecting ring onto the welding table of the pressure vessel body, fixing the diaphragm to the connecting ring, and then threading and welding the gas end cap to the welding table to hide the welding marks. At the same time, the pressure vessel body and end cap are made using nickel plating of chromium-molybdenum steel shell and aluminum alloy extrusion molding technology.

Benefits of technology

It prevents weld fatigue tearing in weld structures, improves sealing performance, and facilitates the installation and fixing of pressure vessels.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of accumulator optimized weld joint, and disclose an accumulator optimized weld joint structure, including pressure vessel body, the outside surface of pressure container is opened has the welding station, the outside surface welding connection has the connecting ring of welding station, the outside surface fixed mounting of connecting ring has the diaphragm, the outside surface of diaphragm is provided with valve seat, the outside surface helical welding of pressure vessel body close to welding station has gas end cap, the outside surface of gas end cap is provided with the inflation port, this accumulator optimized weld joint structure, through the connecting ring welding on the welding station, diaphragm and connecting ring fixed connection, again with the welding station of gas end cap and thread helical connection, again carry out the welding fixed, hide to the welding trace, thereby reached the effect that prevents the weld joint structure to exist weld joint fatigue tear.
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Description

Technical Field

[0001] This utility model relates to the field of energy storage device optimized weld technology, specifically to an energy storage device optimized weld structure. Background Technology

[0002] An accumulator is an energy storage device in the hydraulic and pneumatic systems of automotive hydraulic suspension systems. It can convert the energy in the system into compressed energy or potential energy and store it at appropriate times. When the system needs it, it can convert the compressed energy or potential energy back into hydraulic or pneumatic energy and release it to replenish the system. When the system pressure increases instantaneously, it can absorb this energy to ensure the normal pressure of the entire system.

[0003] Current accumulators require the welding of diaphragms during production, and the weld structure is prone to fatigue tearing. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an optimized weld structure for accumulators, which solves the problem mentioned in the background art that current accumulators require welding of diaphragms during production, resulting in weld fatigue tearing in the weld structure.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an optimized weld structure for an accumulator, comprising a pressure vessel body, a welding platform on the outer surface of the pressure vessel, a connecting ring welded to the outer surface of the welding platform, a diaphragm fixedly installed on the outer surface of the connecting ring, a valve seat provided on the outer surface of the diaphragm, and a gas end cap spirally welded to the outer surface of the pressure vessel body near the welding platform, with an inflation port provided on the outer surface of the gas end cap.

[0006] Preferably, a liquid end cap is spirally welded to the outer surface of the pressure vessel body away from the gas end cap, and a liquid interface is provided on the outer surface of the liquid end cap. A rotating ring is rotatably connected to the outer surface of the pressure vessel body, and a connecting bracket is fixedly installed on the outer surface of the rotating ring. A plurality of mounting holes are provided on the outer surface of the connecting bracket.

[0007] Preferably, a first sealing ring is fixedly installed on the outer surface of the gas end cap, and a second sealing ring is fixedly installed on the outer surface of the liquid end cap. Both the first and second sealing rings are sealed and fitted to the outer surface of the pressure vessel body.

[0008] Preferably, the outer surface of the gas end cap is fitted and connected to the outer surface of the connecting ring, and the pressure vessel body, gas end cap, and liquid end cap are made of nickel-plated chromium-molybdenum steel shell and aluminum alloy extrusion molding technology.

[0009] Preferably, the connecting bracket is L-shaped, the outer surface of the rotating ring is provided with a connector, the outer surface of the connector is provided with a connecting bolt, and the rotating ring is fixedly connected to the pressure vessel body through the connecting bolt.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. The accumulator has an optimized weld structure. By welding the connecting ring to the welding table, the diaphragm is fixedly connected to the connecting ring, and the gas end cap is then connected to the welding table by a threaded spiral connection and then welded to fix it, thus hiding the welding marks and preventing weld fatigue tearing in the weld structure.

[0012] 2. The accumulator has an optimized weld structure. By first spirally connecting the liquid end cap and then welding it, the liquid end cap is fixedly connected to the pressure vessel body. The rotating ring is controlled to rotate on the outer surface of the pressure vessel body to adjust the appropriate installation angle. The pressure vessel body is fixed through the mounting holes, thereby achieving the effect of facilitating the installation and fixing of the pressure vessel. Attached Figure Description

[0013] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a front sectional view of the structure of this utility model;

[0015] Figure 3 This is a top sectional view of the structure of this utility model.

[0016] In the diagram: 1. Pressure vessel body; 2. Gas end cap; 3. Liquid end cap; 4. Gas inlet; 5. Liquid interface; 6. No. 1 sealing ring; 7. Rotary ring; 8. Connecting bracket; 9. Mounting hole; 10. Welding station; 11. Connecting ring; 12. Diaphragm; 13. Valve seat; 14. No. 2 sealing ring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1:

[0019] Please refer to Figures 1-3.

[0020] An optimized weld structure for an accumulator includes a pressure vessel body 1, a welding platform 10 on the outer surface of the pressure vessel, a connecting ring 11 welded to the outer surface of the welding platform 10, a diaphragm 12 fixedly installed on the outer surface of the connecting ring 11, a valve seat 13 on the outer surface of the diaphragm 12, and a gas end cap 2 spirally welded to the outer surface of the pressure vessel body 1 near the welding platform 10, with an inflation port 4 on the outer surface of the gas end cap 2.

[0021] Specifically, by welding the connecting ring 11 onto the welding table 10, fixing the diaphragm 12 to the connecting ring 11, then connecting the gas end cap 2 to the welding table 10 with a threaded spiral connection, and then welding and fixing it, the welding marks are hidden, thereby achieving the effect of preventing weld fatigue tearing in the weld structure.

[0022] In this embodiment: a first sealing ring 6 is fixedly installed on the outer surface of the gas end cap 2, and a second sealing ring 14 is fixedly installed on the outer surface of the liquid end cap 3. Both the first sealing ring 6 and the second sealing ring 14 are sealed and fitted to the outer surface of the pressure vessel body 1.

[0023] Specifically, a first sealing ring 6 is fixedly installed on the outer surface of the gas end cap 2, and a second sealing ring 14 is fixedly installed on the outer surface of the liquid end cap 3. Both the first sealing ring 6 and the second sealing ring 14 are sealed and connected to the outer surface of the pressure vessel body 1 to reinforce the seal and improve the airtightness of the pressure vessel body 1.

[0024] In the embodiment: the outer surface of the gas end cap 2 is fitted and connected to the outer surface of the connecting ring 11. The pressure vessel body 1, the gas end cap 2 and the liquid end cap 3 are made of nickel-plated chromium molybdenum steel shell and aluminum alloy extrusion molding technology.

[0025] Specifically, because the outer surface of the gas end cap 2 is attached to the outer surface of the connecting ring 11, the connecting ring 11 is pressed and fixed. At the same time, the pressure vessel body 1, the gas end cap 2 and the liquid end cap 3 are made of nickel-plated chromium molybdenum steel shell and aluminum alloy extrusion molding technology, which reduces the weight by 15% to 20% and improves the corrosion resistance by 30%.

[0026] Working principle: A welding station 10 is provided on the outer surface of the pressure vessel. A connecting ring 11 is welded to the outer surface of the welding station 10. A diaphragm 12 is fixedly installed on the outer surface of the connecting ring 11. A valve seat 13 is provided on the outer surface of the diaphragm 12. A gas end cap 2 is spirally welded to the outer surface of the pressure vessel body 1 near the welding station 10. An air inlet 4 is provided on the outer surface of the gas end cap 2. The connecting ring 11 is welded to the welding station 10, and the diaphragm 12 is fixedly connected to the connecting ring 11. The gas end cap 2 is then threadedly connected to the welding station 10 and welded to fix it. The welding marks are hidden and the weld is reinforced. Compared with related technologies, the accumulator optimized weld structure provided by this utility model has the following beneficial effects: thereby achieving the effect of preventing weld fatigue tearing in the weld structure.

[0027] Example 2:

[0028] Please refer to Figures 1-3.

[0029] A liquid end cap 3 is spirally welded to the outer surface of the pressure vessel body 1 away from the gas end cap 2. A liquid interface 5 is provided on the outer surface of the liquid end cap 3. A rotating ring 7 is rotatably connected to the outer surface of the pressure vessel body 1. A connecting bracket 8 is fixedly installed on the outer surface of the rotating ring 7. Several mounting holes 9 are opened on the outer surface of the connecting bracket 8.

[0030] Specifically, by first spirally connecting the liquid end cap 3 and then welding it, the liquid end cap 3 is fixedly connected to the pressure vessel body 1. The rotating ring 7 is controlled to rotate on the outer surface of the pressure vessel body 1 to adjust the appropriate installation angle. The pressure vessel body 1 is fixed through the mounting hole 9, thereby achieving the effect of facilitating the installation and fixing of the pressure vessel.

[0031] In this embodiment: the connecting bracket 8 is L-shaped, the outer surface of the rotating ring 7 is provided with a connector, the outer surface of the connector is provided with a connecting bolt, and the rotating ring 7 is fixedly connected to the pressure vessel body 1 through the connecting bolt.

[0032] Specifically, because the connecting bracket 8 is L-shaped, it is convenient to fix the pressure vessel body 1 at different angles. At the same time, the outer surface of the rotating ring 7 is provided with a connector, and the outer surface of the connector is provided with a connecting bolt. The rotating ring 7 is fixedly connected to the pressure vessel body 1 through the connecting bolt, thus fixing the rotating ring 7 to the outer surface of the pressure vessel body 1 and making it convenient to disassemble the rotating ring 7.

[0033] Working principle: A liquid end cap 3 is spirally welded to the outer surface of the pressure vessel body 1 away from the gas end cap 2. A liquid interface 5 is provided on the outer surface of the liquid end cap 3. A rotating ring 7 is rotatably connected to the outer surface of the pressure vessel body 1. A connecting bracket 8 is fixedly installed on the outer surface of the rotating ring 7, and several mounting holes 9 are provided on the outer surface of the connecting bracket 8. The liquid end cap 3 is first spirally connected and then welded to fix it to the pressure vessel body 1. The rotating ring 7 is controlled to rotate on the outer surface of the pressure vessel body 1 to adjust the appropriate installation angle. The pressure vessel body 1 is fixed through the mounting holes 9. Compared with related technologies, the optimized weld structure of the accumulator provided by this utility model has the following beneficial effects: it facilitates the installation and fixing of the pressure vessel.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An optimized weld structure for an energy storage device, comprising a pressure vessel body (1), characterized in that: The outer surface of the pressure vessel is provided with a welding station (10), and a connecting ring (11) is welded to the outer surface of the welding station (10). A diaphragm (12) is fixedly installed on the outer surface of the connecting ring (11), and a valve seat (13) is provided on the outer surface of the diaphragm (12). A gas end cap (2) is spirally welded to the outer surface of the pressure vessel body (1) near the welding station (10), and an air inlet (4) is provided on the outer surface of the gas end cap (2).

2. The energy storage device optimized weld structure according to claim 1, characterized in that: The pressure vessel body (1) has a liquid end cap (3) spirally welded to its outer surface away from the gas end cap (2). The outer surface of the liquid end cap (3) is provided with a liquid interface (5). The outer surface of the pressure vessel body (1) is rotatably connected with a rotating ring (7). The outer surface of the rotating ring (7) is fixedly installed with a connecting bracket (8). The outer surface of the connecting bracket (8) is provided with several mounting holes (9).

3. The energy storage device optimized weld structure according to claim 2, characterized in that: A first sealing ring (6) is fixedly installed on the outer surface of the gas end cap (2), and a second sealing ring (14) is fixedly installed on the outer surface of the liquid end cap (3). Both the first sealing ring (6) and the second sealing ring (14) are sealed and fitted to the outer surface of the pressure vessel body (1).

4. The energy storage device optimized weld structure according to claim 2, characterized in that: The outer surface of the gas end cap (2) is fitted and connected to the outer surface of the connecting ring (11). The pressure vessel body (1), gas end cap (2) and liquid end cap (3) are made of nickel-plated chromium molybdenum steel shell and aluminum alloy extrusion molding technology.

5. The energy storage device optimized weld structure according to claim 2, characterized in that: The connecting bracket (8) is L-shaped, and the outer surface of the rotating ring (7) is provided with a connector. The outer surface of the connector is provided with a connecting bolt. The rotating ring (7) is fixedly connected to the pressure vessel body (1) through the connecting bolt.