Fatigue testing device for energy accumulator

Abstract

The utility model provides a fatigue testing device for an energy accumulator, which belongs to the technical field of energy accumulator production and manufacturing and comprises a first barrel, a liquid storage cavity is arranged in the first barrel, a separating plug is slidably arranged in the liquid storage cavity and divides the liquid storage cavity into a first cavity and a second cavity which are not communicated with each other, the first cavity is used for containing brake oil, and the second cavity is used for containing brake oil. The second cavity is used for containing hydraulic oil, a first connector pipe and a second connector pipe are arranged at the two axial ends of the first barrel respectively, the first connector pipe is communicated with the first cavity and used for being connected with an energy accumulator, and the second connector pipe is communicated with the second cavity and used for being connected with a hydraulic system of a hydraulic pump. A heat dissipation assembly corresponding to the liquid storage cavity is arranged on the outer side wall of the first barrel. According to the fatigue testing device for the energy accumulator provided by the utility model, brake oil does not need to be added into the hydraulic pump for operation, so that the operation environment of the hydraulic pump is improved, and the hydraulic pump is not easy to damage.

Description

Technical Field

[0001] The utility model belongs to the technical field of accumulator production and manufacturing, and more specifically, relates to an accumulator fatigue test device. Background Art

[0002] The diaphragm accumulator is a common mechanical accumulator used to store fluid energy and release it when needed. The diaphragm accumulator includes a housing, and a rubber diaphragm is provided inside the housing. After the diaphragm accumulator is assembled, it is usually necessary to conduct a fatigue test on the rubber diaphragm inside the housing. In order to ensure little damage to the rubber diaphragm during the fatigue test, during the fatigue test, brake oil is used to squeeze the rubber diaphragm, and a hydraulic pump is used as the power source for the fatigue test. Therefore, during the test, the liquid medium in the hydraulic pump needs to be replaced with brake oil. In actual applications, after multiple fatigue tests, due to the poor lubrication effect of the brake oil, the wear rate of the internal components of the hydraulic pump is relatively high, and the hydraulic pump is easily damaged, resulting in economic losses. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an accumulator fatigue test device, aiming to solve the problem that the fatigue test operation of the accumulator easily causes damage to the hydraulic pump.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: to provide an accumulator fatigue test device, including a first cylinder body. A liquid storage cavity is provided inside the first cylinder body. A partition plug is slidably provided in the liquid storage cavity. The partition plug divides the liquid storage cavity into a first chamber and a second chamber that are not connected to each other. The first chamber is used to hold brake oil, and the second chamber is used to hold hydraulic oil. Axial ends of the first cylinder body are respectively provided with a first interface pipe and a second interface pipe. The first interface pipe is communicated with the first chamber and is used to connect an accumulator. The second interface pipe is communicated with the second chamber and is used to connect the hydraulic system of a hydraulic pump. A heat dissipation component is provided on the outer side wall of the first cylinder body corresponding to the liquid storage cavity.

[0005] In a possible implementation manner, the heat dissipation component includes a second cylinder body. The second cylinder body is sleeved on the first cylinder body. A heat dissipation cavity is provided between the first cylinder body and the second cylinder body. Water inlet pipes and water outlet pipes are respectively provided at axial ends of the second cylinder body. Both the water inlet pipe and the water outlet pipe are communicated with the heat dissipation cavity.

[0006] In a possible implementation manner, a plurality of heat dissipation fins are provided on the side wall of the first cylinder body. The heat dissipation fins are located in the heat dissipation cavity.

[0007] In a possible implementation manner, the heat dissipation fins extend along the axial direction of the first cylinder body, and a plurality of the heat dissipation fins surround the first cylinder body in the circumferential direction.

[0008] In a possible implementation, the heat dissipation fins are arranged around the circumference of the first cylinder body, and a plurality of the heat dissipation fins are arranged at intervals along the axial direction of the first cylinder body.

[0009] In a possible implementation, the heat dissipation fins are arranged perpendicular to the first cylinder body.

[0010] In a possible implementation, an isolation belt is arranged in the heat dissipation cavity. The isolation belt is spirally wound between the first cylinder body and the second cylinder body and extends along the axial direction of the first cylinder body to form a spiral water channel in the heat dissipation cavity. Both the water inlet pipe and the water outlet pipe are communicated with the spiral water channel.

[0011] In a possible implementation, the caliber of the water inlet pipe is larger than that of the water outlet pipe.

[0012] In a possible implementation, a first sealing plug and a second sealing plug are respectively arranged at two axial ends of the first cylinder body. The liquid storage cavity is arranged between the first sealing plug and the second sealing plug. The first interface pipe is arranged on the first sealing plug, and the second interface pipe is arranged on the second sealing plug.

[0013] In a possible implementation, a first communication hole is penetrated through the middle of the first sealing plug. The first interface pipe is connected to the outer end of the first communication hole. A liquid guiding section is arranged at the inner end of the first communication hole, and the cross-sectional area of the liquid guiding section gradually decreases from outside to inside.

[0014] The beneficial effect of the accumulator fatigue test device provided by the present utility model lies in that: compared with the prior art, in the accumulator fatigue test device of the present utility model, when performing a fatigue test on the diaphragm device, brake oil is injected into the first chamber, the diaphragm device to be tested is connected to the first interface pipe, and then the second interface pipe is connected to the hydraulic system of the hydraulic pump. By starting the hydraulic pump, hydraulic oil is filled into the second chamber, and by changing the volume of the hydraulic oil in the second chamber, the partition plug is driven to slide reciprocally, so as to repeatedly squeeze the brake oil in the first chamber against the diaphragm in the diaphragm device. And the first cylinder body is cooled by the heat dissipation assembly to prevent its temperature from being too high and damaging the partition plug. By using the accumulator fatigue test device provided by the present utility model, it is no longer necessary to add brake oil to the hydraulic pump for operation, thereby improving the operating environment of the hydraulic pump and making the hydraulic pump not easily damaged. Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 The left view structural schematic diagram of the accumulator fatigue test device provided in the first embodiment of the present utility model;

[0017] Figure 2 For along Figure 1 The sectional view along line A-A in

[0018] Figure 3 The front view sectional structural schematic diagram of the accumulator fatigue test device provided in the second embodiment of the present utility model;

[0019] Figure 4 For along Figure 3 The sectional view along line B-B in

[0020] Figure 5 The front view sectional structural schematic diagram of the accumulator fatigue test device provided in the third embodiment of the present utility model;

[0021] Figure 6 For along Figure 5 The sectional view along line C-C in

[0022] Figure 7 The front view partial sectional structural schematic diagram of the accumulator fatigue test device provided in the fourth embodiment of the present utility model.

[0023] Explanation of reference numerals:

[0024] 1. First cylinder; 11. Second sealing plug; 12. First interface pipe; 2. Liquid storage cavity; 21. First chamber; 22. Second chamber; 3. Partition plug; 4. First sealing plug; 41. First communication hole; 411. Liquid guiding section; 5. Second interface pipe; 51. Second communication hole; 6. Second cylinder; 61. Heat dissipation cavity; 62. Heat dissipation fins; 63. Isolation belt; 7. Water inlet pipe; 8. Water outlet pipe. Detailed implementation manners

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model more clearly understood, the following further details the present utility model in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0026] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0027] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0028] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0029] Please refer to Figures 1 to 2 , and now the accumulator fatigue test device provided by the present invention will be described. The accumulator fatigue test device includes a first cylinder body 1. A liquid storage cavity 2 is provided inside the first cylinder body 1. A partition plug 3 is slidably provided in the liquid storage cavity 2. The partition plug 3 divides the liquid storage cavity 2 into a non-communicating first chamber 21 and a second chamber 22. The first chamber 21 is used to contain brake fluid, and the second chamber 22 is used to contain hydraulic oil. First interface pipes 12 are respectively provided at both axial ends of the first cylinder body 1. The first interface pipe 12 communicates with the first chamber 21 and is used to connect an accumulator. The second interface pipe 5 communicates with the second chamber 22 and is used to connect a hydraulic system of a hydraulic pump. A heat dissipation assembly is provided on the outer side wall of the first cylinder body 1 corresponding to the liquid storage cavity 2.

[0030] The accumulator fatigue test device provided by the present utility model, compared with the prior art, when performing a fatigue test on the diaphragm device, brake oil is injected into the first chamber 21, the diaphragm device to be tested is connected to the first interface pipe 12, and then the second interface pipe 5 is connected to the hydraulic system of the hydraulic pump. By starting the hydraulic pump, hydraulic oil is filled into the second chamber 22, and by changing the volume of the hydraulic oil in the second chamber 22, the partition plug 3 is driven to slide reciprocally, so as to repeatedly squeeze the brake oil in the first chamber 21 against the diaphragm in the diaphragm device. And the first cylinder 1 is cooled by the heat dissipation component to prevent its temperature from being too high and damaging the partition plug 3. When using the accumulator fatigue test device provided by the present utility model, there is no need to add brake oil to the hydraulic pump for operation, thereby improving the working environment of the hydraulic pump and making the hydraulic pump not easily damaged.

[0031] In some embodiments, please refer to Figures 1 to 2 , both axial ends of the first cylinder 1 are provided with fitting ports, and a first sealing plug 4 and a second sealing plug 11 are respectively connected to the two fitting ports. Among them, both the first sealing plug 4 and the second sealing plug 11 are fixedly welded or bolted to the first cylinder 1. The liquid storage cavity 2 is arranged between the first sealing plug 4 and the second sealing plug 11. The partition plug 3 is slidably arranged in the liquid storage cavity 2 and is located between the first sealing plug 4 and the second sealing plug 11. Among them, the first chamber 21 is formed between the first sealing plug 4 and the partition plug 3, and the second chamber 22 is formed between the second sealing plug 11 and the partition plug 3. When the partition plug 3 slides, the volumes of the first chamber 21 and the second chamber 22 will change in opposite directions simultaneously.

[0032] In this embodiment, the first interface pipe 12 is connected to the first sealing plug 4, and the second interface pipe 5 is connected to the second sealing plug 11. A first communication hole 41 is axially penetrated through the middle of the first sealing plug 4. The outer end of the first communication hole 41 is fixedly connected to the first interface pipe 12 by welding or screwing. The inner end of the first communication hole 41 is provided with a liquid guiding section 411 communicating with the first chamber 21. In this embodiment, the cross-sectional area of the liquid guiding section 411 gradually decreases from the outside to the inside, that is, from one side of the first chamber 21 to the other side, so as to facilitate guiding the brake oil in the first chamber 21 into the first interface pipe 12. A second communication hole 51 is axially penetrated through the middle of the second sealing plug 11. The outer end of the second communication hole 51 is fixedly connected to the second interface pipe 5 by welding or screwing. The inner end of the first communication hole 41 communicates with the second chamber 22.

[0033] In some embodiments, please refer to Figures 1 to 2, the above-mentioned heat dissipation component includes a second cylinder body 6, the second cylinder body 6 is sleeved on the first cylinder body 1, a heat dissipation cavity 61 is provided between the first cylinder body 1 and the second cylinder body 6, and a water inlet pipe 7 and a water outlet pipe 8 are respectively arranged at both axial ends of the second cylinder body 6, and both the water inlet pipe 7 and the water outlet pipe 8 are communicated with the heat dissipation cavity 61. During the fatigue test, the partition plug 3 repeatedly squeezes the brake oil in the first chamber 21, and the first cylinder body 1 generates heat by friction with the brake oil, and it is necessary to cool it down. By connecting the water inlet pipe 7 to a water supply source, cooling water can be filled into the heat dissipation cavity 61 for heat exchange with the first cylinder body 1, and then the cooling water is discharged through the water outlet pipe 8, so that the temperature of the first cylinder body 1 can be kept stable and the partition plug 3 can be prevented from being damaged due to excessive temperature.

[0034] Furthermore, in this embodiment, the diameter of the water inlet pipe 7 is larger than that of the water outlet pipe 8. With such a setting, the water inflow is greater than the water outflow, so that the cooling water in the heat dissipation cavity 61 can be kept full, and the heat dissipation effect is good.

[0035] In some embodiments, please refer to Figures 3 to 6 , a plurality of heat dissipation fins 62 are provided on the side wall of the first cylinder body 1. The plurality of heat dissipation fins 62 are located in the heat dissipation cavity 61 and are vertically arranged with respect to the first cylinder body 1. By providing the heat dissipation fins, the heat dissipation area of the first cylinder body 1 is increased, and the heat exchange efficiency between the first cylinder body 1 and the cooling water is improved by means of the heat dissipation fins.

[0036] Optionally, please refer to Figures 3 to 4 , the heat dissipation fins 62 surround the circumference of the first cylinder body 1, and the plurality of heat dissipation fins 62 are arranged at intervals along the axial direction of the first cylinder body 1.

[0037] Optionally, please refer to Figures 5 to 6 , the heat dissipation fins 62 extend along the axial direction of the first cylinder body 1, and the plurality of heat dissipation fins 62 surround the circumference of the first cylinder body 1.

[0038] In some embodiments, please refer to Figure 7 , an isolation belt 63 is provided in the heat dissipation cavity 61. The isolation belt 63 is spirally wound between the first cylinder body 1 and the second cylinder body 6 and extends along the axial direction of the first cylinder body 1 to form a spiral water channel in the heat dissipation cavity 61. Both the water inlet pipe 7 and the water outlet pipe 8 are communicated with the spiral water channel. By providing the spiral water channel, the cooling water can be guided to flow in the heat dissipation cavity 61 along a certain path, so that the heat exchange between the cooling water and the first cylinder body 1 is uniform, and at the same time, the flow resistance of the cooling water is reduced.

[0039] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Energy storage fatigue test device, characterized in that, It includes a first cylinder body (1), a liquid storage cavity (2) is arranged inside the first cylinder body (1), a partition plug (3) is slidably arranged in the liquid storage cavity (2), the partition plug (3) divides the liquid storage cavity (2) into a non-communicating first chamber (21) and a second chamber (22), the first chamber (21) is used for containing brake fluid, the second chamber (22) is used for containing hydraulic oil, the axial two ends of the first cylinder body (1) are respectively provided with a first interface pipe (12) and a second interface pipe (5), the first interface pipe (12) communicates with the first chamber (21) and is used for connecting an accumulator, the second interface pipe (5) communicates with the second chamber (22) and is used for connecting a hydraulic system of a hydraulic pump, and a heat dissipation assembly is arranged on the outer side wall of the first cylinder body (1) corresponding to the liquid storage cavity (2).

2. The accumulator fatigue test device according to claim 1, characterized in that, The heat dissipation assembly includes a second cylinder body (6), the second cylinder body (6) is sleeved on the first cylinder body (1), a heat dissipation cavity (61) is formed between the first cylinder body (1) and the second cylinder body (6), the axial two ends of the second cylinder body (6) are respectively provided with a water inlet pipe (7) and a water outlet pipe (8), and both the water inlet pipe (7) and the water outlet pipe (8) communicate with the heat dissipation cavity (61).

3. The accumulator fatigue test device according to claim 2, wherein A plurality of heat dissipation fins (62) are arranged on the side wall of the first cylinder body (1), and the heat dissipation fins (62) are located in the heat dissipation cavity (61).

4. The accumulator fatigue test device according to claim 3, wherein The heat dissipation fins (62) extend along the axial direction of the first cylinder body (1), and a plurality of the heat dissipation fins (62) surround the first cylinder body (1) in the circumferential direction.

5. The accumulator fatigue test device according to claim 3, wherein The heat dissipation fins (62) surround the first cylinder body (1) in the circumferential direction, and a plurality of the heat dissipation fins (62) are arranged at intervals along the axial direction of the first cylinder body (1).

6. The accumulator fatigue test device according to claim 3, wherein The heat dissipation fins (62) are perpendicular to the first cylinder body (1).

7. The accumulator fatigue test device according to claim 2, characterized in that, An isolation belt (63) is arranged in the heat dissipation cavity (61), the isolation belt (63) is spirally wound between the first cylinder body (1) and the second cylinder body (6) and extends along the axial direction of the first cylinder body (1) to form a spiral water channel in the heat dissipation cavity (61), and both the water inlet pipe (7) and the water outlet pipe (8) communicate with the spiral water channel.

8. The accumulator fatigue test device according to claim 2, characterized in that, The caliber of the water inlet pipe (7) is larger than that of the water outlet pipe (8).

9. The accumulator fatigue test device according to claim 1, wherein, A first sealing plug (4) and a second sealing plug (11) are respectively arranged at the axial two ends of the first cylinder body (1), the liquid storage cavity (2) is arranged between the first sealing plug (4) and the second sealing plug (11), the first interface pipe (12) is arranged on the first sealing plug (4), and the second interface pipe (5) is arranged on the second sealing plug (11).

10. The accumulator fatigue test device according to claim 9, characterized in that, A first communication hole (41) penetrates through the middle of the first sealing plug (4), the first interface pipe (12) is connected to the outer end of the first communication hole (41), a liquid guiding section (411) is arranged at the inner end of the first communication hole (41), and the cross-sectional area of the liquid guiding section (411) gradually decreases from outside to inside.

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