High performance accumulator and its cup

Abstract

The application relates to the technical field of hydraulic accumulators, in particular to a high-performance accumulator and a skin bowl of the accumulator, wherein the skin bowl comprises a skin bowl elastomer, and a framework which is integrally injection molded with the skin bowl elastomer and is located at a position where the skin bowl elastomer contacts a large-diameter oil inlet hole of the accumulator. The application has the advantages of solving the problem of cutting of the large-diameter oil inlet hole.

Description

Technical Field

[0001] This application relates to the technical field of hydraulic accumulators, and particularly to a high-performance accumulator and its piston cup. Background Technology

[0002] In hydraulic energy storage systems, the energy storage cup is the core sealing and energy transfer component, and its performance directly affects the sealing performance, service life, and system stability of the energy storage device.

[0003] Currently, traditional hydraulic accumulator cups are mostly single-elastomer structures, such as those made of rubber. In practical applications, space constraints can lead to design flaws in the oil inlet, especially in some hydraulic equipment such as small hydraulic power units and compact actuators. Due to overall structural size limitations, the installation space for the accumulator's oil inlet is extremely small, making it impossible to manufacture multiple small-diameter oil inlets as per conventional designs. Instead, a single large-diameter oil inlet must be used to meet flow requirements, thus reducing the risk of damage to the accumulator cup.

[0004] As the size of the oil inlet increases, the lip of the lip cup will deform under pressure. When the traditional single elastomer lip cup comes into contact with such a large-diameter oil inlet, the lip is easily scratched by the sharp edge, or local wear and tear may occur under the impact of the flow rate, resulting in seal failure. The average service life is only 40%-60% of that in normal scenarios, which seriously affects the reliability of the hydraulic system. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides a high-performance energy accumulator and its diaphragm.

[0006] On the one hand, the high-performance accumulator cup provided in this application adopts the following technical solution: A high-performance accumulator cup, comprising: Elastomers for leather cups, and The skeleton is integrally injection molded with the cup elastomer and is located at the position where the cup elastomer contacts the large-diameter oil inlet of the accumulator.

[0007] In one embodiment: the skeleton is entirely encased within the elastic body of the leather cup.

[0008] In one embodiment: the skeleton is provided with a plurality of fitting through holes along the axial direction, and the cup elastomer is injection molded into the fitting through holes to form radial reinforcing ribs.

[0009] In one embodiment: one end of the skeleton is integrally connected to a transition support, and an annular groove is formed between the transition support and the skeleton.

[0010] In one embodiment, the diameter of the skeleton is smaller than the diameter of the transition support.

[0011] In one embodiment: the end face of the transition support facing the large-diameter oil inlet is exposed outside the elastic body of the cup, and an oil drain groove is provided on the end face.

[0012] In one embodiment: the drain groove includes an annular groove and a cross-shaped groove, the cross-shaped groove being located inside the annular groove and communicating with the annular groove.

[0013] In one embodiment, the center of the cross-shaped groove is provided with an oil drain hole.

[0014] In one embodiment, the opening end of the cup elastomer adopts a double-lip structure.

[0015] On the other hand, the high-performance energy storage device provided in this application adopts the following technical solution: A high-performance energy storage device, comprising the aforementioned diaphragm.

[0016] In summary, this application has the following beneficial effects: 1. Suitable for installation in small spaces: The integrated structure requires no additional assembly space. The fusion design of the frame and the elastomer of the cup can minimize the overall size of the cup, meeting the requirements of use in small installation spaces. Compared with the traditional split structure, the installation space occupied is reduced by 15%-20%. 2. Improved sealing and structural stability: The radial reinforcing ribs of the skeleton enhance the deformation capacity of the cup elastomer, and the double-lip design of the cup elastomer improves the sealing performance. Within the working pressure range of 10-31.5MPa, the sealing leakage is ≤0.1mL / min, which meets the sealing requirements of the hydraulic system. 3. Solving the problem of large-diameter oil inlet cuts: By having the skeleton directly contact the oil inlet, physical protection is formed for the elastomer of the leather cup, avoiding the sharp edge of the oil inlet from scratching the elastomer of the leather cup. Tests have shown that the service life of the leather cup in the case of large-diameter oil inlets is increased to 2.5-3 times that of traditional leather cups. 4. Simple process and controllable cost: The integrated injection molding process eliminates the need for subsequent assembly, increasing production efficiency by 30%; the material costs of engineering plastics and rubber are similar to those of traditional leather cups, without adding any extra cost burden. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the high-performance energy storage device in this embodiment; Figure 2 This is a schematic diagram of the high-performance accumulator cup in this embodiment; Figure 3 This is a schematic diagram of the skeleton structure in the high-performance accumulator cup of this embodiment; Figure 4 This is a front sectional view of the skeleton in the high-performance accumulator cup of this embodiment; Figure 5 This is a bottom view of the skeleton in the high-performance accumulator cup of this embodiment.

[0018] In the figure, 10 is the accumulator body; 11 is the large-diameter oil inlet; 20 is the diaphragm cup; 100 is the diaphragm cup elastomer; 110 is the radial reinforcing rib; 120 is the double-lip structure; 200 is the skeleton; 210 is the fitting through hole; 220 is the annular groove; 300 is the transition support; 310 is the oil drain groove; 311 is the annular groove; 312 is the cross-shaped groove; and 313 is the oil drain hole. Detailed Implementation

[0019] The present application will be further described in detail below with reference to the accompanying drawings.

[0020] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0021] A high-performance energy storage device, such as Figure 1 As shown, there is an accumulator body 10 and a diaphragm cup 20 installed inside the accumulator body 10. The bottom of the accumulator body 10 is provided with a large-diameter oil inlet 11.

[0022] like Figure 2 As shown, the leather cup 20 includes a leather cup elastomer 100 and a skeleton 200. The leather cup elastomer 100 has a U-shaped structure. The elastic opening end of the leather cup 20 adopts a double lip structure 120. The double lip structure 120 achieves an excellent sealing effect on both the inner and outer sides of the elastic opening end of the leather cup 20.

[0023] The skeleton 200 is located at the bottom where the cup elastomer 100 contacts the large-diameter oil inlet of the accumulator. The skeleton 200 is made of PA66 glass fiber. The cup elastomer 100 is formed by an integrated injection molding process, which makes the cup elastomer 100 and the skeleton 200 form an integral structure.

[0024] During injection molding, the injection temperature is 180-220℃, and the holding pressure time is 20-40s.

[0025] The skeleton 200 is completely enclosed within the elastomer 100.

[0026] Combined with appendix Figure 3 The skeleton 200 is disc-shaped, and multiple fitting through holes 210 are provided on the skeleton 200 along the axial direction. Preferably, there are 4-6 fitting through holes 210, which are evenly distributed around the circumference of the skeleton 200. In this embodiment, four fitting through holes 210 are used as an example.

[0027] The elastomer 100 of the cup is injection molded into the fitting through hole 210 to form radial reinforcing ribs 110.

[0028] Reference Figure 4 One end of the skeleton 200 is integrally connected to a transition support 300. The diameter of the skeleton 200 is smaller than the diameter of the transition support 300. An annular groove 220 is formed between the transition support 300 and the skeleton 200.

[0029] Reference Figure 5 The end face of the transition support 300 facing the large-diameter oil inlet hole is exposed outside the rubber cup elastomer 100, and an oil drain groove 310 is provided on the end face.

[0030] The oil drain groove 310 includes an annular groove 311 and a cross-shaped groove 312. The cross-shaped groove 312 is located inside the annular groove 311 and communicates with the annular groove 311. An oil drain hole 313 is provided at the center of the cross-shaped groove 312.

[0031] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-performance accumulator cup, characterized in that, include: The elastomer (100) and the cup elastomer The skeleton (200) is integrally injection molded with the cup elastomer (100) and is located at the position where the cup elastomer (100) contacts the large-diameter oil inlet of the accumulator.

2. The high-performance accumulator cup according to claim 1, characterized in that: The skeleton (200) is entirely enclosed within the cup elastomer (100).

3. A high-performance accumulator cup according to claim 1 or 2, characterized in that: The skeleton (200) is provided with a plurality of fitting through holes (210) along the axial direction, and the cup elastomer (100) is injection molded with radial reinforcing ribs (110) in the fitting through holes (210).

4. The high-performance accumulator cup according to claim 3, characterized in that: One end of the frame (200) is integrally connected to a transition support (300), and an annular groove (220) is formed between the transition support (300) and the frame (200).

5. A high-performance accumulator cup according to claim 4, characterized in that: The diameter of the skeleton (200) is smaller than the diameter of the transition support (300).

6. A high-performance accumulator cup according to claim 5, characterized in that: The end face of the transition support (300) facing the large-diameter oil inlet hole is exposed outside the cup elastomer (100), and an oil drain groove (310) is provided on the end face.

7. A high-performance accumulator cup according to claim 6, characterized in that: The oil drain groove (310) includes an annular groove (311) and a cross-shaped groove (312), wherein the cross-shaped groove (312) is located inside the annular groove (311) and communicates with the annular groove (311).

8. A high-performance accumulator cup according to claim 7, characterized in that: The center of the cross-shaped groove (312) is provided with an oil drain hole (313).

9. A high-performance accumulator cup according to claim 1, characterized in that: The opening end of the cup elastomer (100) adopts a double-lip structure (120).

10. A high-performance energy storage device, characterized in that: It includes the leather bowl as described in any one of claims 1-9.

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