Conversion device for pressure test of energy accumulator

Abstract

The utility model provides a conversion device for pressure test of an energy accumulator, which belongs to the technical field of energy accumulator manufacture and comprises a barrel, two axial ends of the barrel are sealed, a liquid storage cavity is arranged in the barrel, a separation plug is arranged in the liquid storage cavity in a sliding manner and divides the liquid storage cavity into a first cavity and a second cavity which are not communicated with each other, and the first cavity and the second cavity are communicated with each other. A first connector pipe and a second connector pipe are arranged on the outer side wall of the barrel, one end of the first connector pipe communicates with the first cavity, the other end of the first connector pipe is used for being connected with an energy accumulator shell, one end of the second connector pipe communicates with the second cavity, and the other end of the second connector pipe is used for being connected with pressing equipment. According to the conversion device for the pressure test of the energy accumulator, provided by the utility model, after the requirement of the liquid medium for pressing the shell of the energy accumulator is changed, the liquid medium in the hydraulic pump does not need to be replaced, so that the labor intensity of operators is reduced, the operation time is shortened, and the operation efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of accumulator manufacturing, and more specifically, relates to a conversion device for accumulator pressure testing. Background Art

[0002] The diaphragm accumulator is a common mechanical accumulator used to store fluid energy and release it when needed. The shell of the diaphragm accumulator is usually welded by two half-shells. After the shell welding is completed, it is necessary to conduct a pressure test on the shell to detect the sealing performance of the shell. In actual operations, different product purchasers have different requirements for the liquid medium used when conducting pressure tests on the accumulator shell. Some accumulator shells are required to use hydraulic oil for pressure testing, while some are required to use brake oil for pressure testing, resulting in the need for operators to frequently change the liquid medium in the pressure testing equipment, increasing the labor intensity of the operators and affecting the operation efficiency. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a conversion device for accumulator pressure testing, aiming to solve the problem that in production, the frequent replacement of the liquid medium in the pressure testing equipment leads to high labor intensity of the operators and affects the operation efficiency.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: to provide a conversion device for accumulator pressure testing, including a cylinder body, the axial ends of the cylinder body are sealed, a liquid storage cavity is arranged in the cylinder body, a partition plug is slidably arranged in the liquid storage cavity, the partition plug divides the liquid storage cavity into a first chamber and a second chamber that are not communicated with each other, a first interface pipe and a second interface pipe are arranged on the outer side wall of the cylinder body, one end of the first interface pipe communicates with the first chamber, the other end of the first interface pipe is used to connect the accumulator shell, one end of the second interface pipe communicates with the second chamber, and the other end of the second interface pipe is used to connect the pressure testing equipment.

[0005] In a possible implementation manner, the first interface pipe is connected to the accumulator shell through a pressure testing pipe, the pressure testing pipe includes a main pipe and a plurality of branch pipes connected to the main pipe, the main pipe is connected to the first interface pipe, and the branch pipes are used to connect the accumulator shell.

[0006] In a possible implementation manner, a hydraulic pressure gauge is arranged on the main pipe.

[0007] In a possible implementation manner, a switch valve is arranged on the branch pipe.

[0008] In a possible implementation manner, a stabilizing frame is connected between the main pipe and the cylinder body.

[0009] In a possible implementation, one end of the cylinder body is provided with an assembly port communicating with the liquid storage chamber. A sealing plug is arranged in the assembly port. The first chamber is arranged on the side close to the sealing plug. The sealing plug is provided with an infusion channel for communicating with the first chamber. The first interface pipe penetrates through the side wall of the cylinder body and communicates with the infusion channel.

[0010] In a possible implementation, a liquid guiding groove is arranged on the end face of the sealing plug facing the first chamber. The infusion channel is connected to the bottom of the liquid guiding groove. One end of the partition plug facing the first chamber is provided with a protruding portion adapted to the liquid guiding groove.

[0011] In a possible implementation, it further includes a base. The cylinder body is arranged on the base, and walking wheels are arranged below the base.

[0012] In a possible implementation, a positioning groove is arranged at the upper end of the base, and the cylinder body is inserted into the positioning groove.

[0013] The beneficial effect of the conversion device for accumulator pressure test provided by the present utility model is as follows: Compared with the prior art, for the conversion device for accumulator pressure test of the present utility model, when connecting the hydraulic pump to the second interface pipe, by means of the partition plug, the brake oil pre-filled in the first chamber can be driven to enter the accumulator housing through the first interface pipe for pressure test. Thus, after the requirements for the liquid medium used for pressurizing the accumulator housing change, there is no need to replace the liquid medium in the hydraulic pump anymore, thereby reducing the labor intensity of the operators, shortening the operation time, and improving the operation efficiency. Description of the Drawings

[0014] In order 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 following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1 It is the front view structural schematic diagram of the conversion device for accumulator pressure test provided by the embodiment of the present utility model;

[0016] Figure 2 It is the left view structural schematic diagram of the conversion device for accumulator pressure test provided by the embodiment of the present utility model;

[0017] Figure 3 It is the front view structural schematic diagram of the cylinder body provided by the embodiment of the present utility model.

[0018] Explanation of the reference numerals:

[0019] 1. Cylinder body; 11. Sealing plug; 12. Infusion channel; 13. Liquid guiding groove; 2. Liquid storage cavity; 21. First chamber; 22. Second chamber; 3. Partition plug; 31. Protruding part; 4. First interface pipe; 5. Second interface pipe; 6. Pressurizing pipe; 61. Main pipe; 62. Branch pipe; 7. Hydraulic pressure gauge; 8. Stabilizing frame; 9. Base; 91. Traveling wheels. Detailed implementation manners

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying 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.

[0021] 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.

[0022] It should be understood that the orientation or positional relationship indicated by the terms "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 accompanying drawings, and is only for the convenience of describing the present utility model 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, and therefore should not be construed as a limitation to the present utility model.

[0023] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating 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 utility model, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0024] Please refer to Figures 1 to 3, the conversion device for accumulator pressure test provided by the present utility model will be described hereinafter. The conversion device for accumulator pressure test includes a cylinder body 1, the axial ends of the cylinder body 1 are sealed, a liquid storage cavity 2 is arranged inside the cylinder body 1, a partition plug 3 is slidably arranged in the liquid storage cavity 2, and the partition plug 3 divides the liquid storage cavity 2 into a non-communicating first chamber 21 and a second chamber 22. A first interface pipe 4 and a second interface pipe 5 are arranged on the outer side wall of the cylinder body 1. One end of the first interface pipe 4 communicates with the first chamber 21, and the other end of the first interface pipe 4 is used for connecting to the accumulator shell. One end of the second interface pipe 5 communicates with the second chamber 22, and the other end of the second interface pipe 5 is used for connecting to a pressure boosting device.

[0025] In this example, the pressure boosting device is a hydraulic pump. A plurality of annular grooves are arranged on the circumferential side wall of the partition plug 3, and rubber sealing rings are sleeved in the annular grooves. The rubber sealing rings abut between the partition plug 3 and the cylinder body 1 to seal between the partition plug 3 and the cylinder body 1. In actual operation, a certain amount of brake oil is filled in the first chamber 21 for standby. When the accumulator shell is required to be pressure tested with hydraulic oil, the hydraulic pump is directly connected to the accumulator shell for testing. When the accumulator shell is required to be pressure tested with brake oil, the hydraulic pipeline of the hydraulic pump is connected to the second interface pipe 5 of this device, and the accumulator to be tested is connected to the second interface pipe 5 of this device. The hydraulic pump is started, and the hydraulic oil in the hydraulic pump flows into the second chamber 22, and drives the partition plug 3 to slide in the liquid storage cavity 2, pushing the brake oil in the first chamber 21 to enter the interior of the accumulator shell to be tested through the first interface pipe 4 for pressure testing.

[0026] Compared with the prior art, for the conversion device for accumulator pressure test provided by the present utility model, by connecting the hydraulic pump to the second interface pipe 5 and with the aid of the partition plug 3, the brake oil pre-filled in the first chamber 21 can be driven to enter the accumulator shell through the first interface pipe 4 for pressure testing. Thus, after the requirement for the liquid medium for pressure boosting the accumulator shell changes, there is no need to replace the liquid medium in the hydraulic pump, thereby reducing the labor intensity of the operators, shortening the operation time, and improving the operation efficiency.

[0027] In some embodiments, please refer to Figures 1 to 3 , the first interface pipe 4 is connected to the accumulator shell through a pressure boosting pipe 6. The pressure boosting pipe 6 includes a main pipe 61 and a plurality of branch pipes 62 connected to the main pipe 61. Among them, the main pipe 61 is connected to the first interface pipe 4, and the branch pipes 62 are used for connecting to the accumulator shell. Through the above arrangement, this device can test a plurality of accumulator shells simultaneously in a single pressure boosting test experiment, improving the operation efficiency.

[0028] In this embodiment, a hydraulic pressure gauge 7 is arranged at the end of the main pipe 61 far from the first interface pipe 4. The liquid pressure in the main pipe 61 can be monitored in real time through the hydraulic pressure gauge 7, improving the control ability of the operator for the pressure boosting test of the accumulator shell.

[0029] Among them, a plurality of branch pipes 62 provided on the main pipe 61 are arranged at intervals along the length direction of the main pipe 61. A switching valve (not shown in the figure) is provided on each branch pipe 62. During the pressure test, the switching valve is in an open state, and the brake fluid in the branch pipe 62 can flow into the accumulator housing. When the pressure test is not carried out, the switching valve is in a closed state, which can prevent the brake fluid from flowing out of the branch pipe 62 and causing waste.

[0030] In this embodiment, in order to improve the stability of the main pipe 61 during the pressure test, a stabilizing frame 8 is connected between the main pipe 61 and the cylinder body 1. In this embodiment, the stabilizing frame 8 is arranged at one end of the main pipe 61 away from the first interface pipe 4, and the stabilizing frame 8 is fixed to the main pipe 61 and the cylinder body 1 by bolting or welding.

[0031] In some embodiments, please refer to Figure 3 , one end of the cylinder body 1 is provided with an assembly port communicating with the liquid storage cavity 2. A sealing plug 11 is arranged in the assembly port. The first chamber 21 is arranged on one side close to the sealing plug 11. The sealing plug 11 is provided with an infusion channel 12 for communicating with the first chamber 21. The first interface pipe 4 penetrates through the side wall of the cylinder body 1 and communicates with the infusion channel 12. In actual operation, the partition plug 3 can be assembled into the liquid storage cavity 2 through the assembly port. After the partition plug 3 is installed, the assembly port is sealed by the sealing plug 11, so as to realize the sealing of one end of the assembly port of the cylinder body 1.

[0032] In this embodiment, a liquid guiding groove 13 for guiding the brake fluid to flow into the infusion channel 12 is arranged on the end face of the sealing plug 11 facing the first chamber 21. In this embodiment, the side wall of the liquid guiding groove 13 is inclined from the outside to the middle, and the infusion channel 12 is connected to the bottom of the liquid guiding groove 13. A protruding portion 31 adapted to the liquid guiding groove 13 is arranged on one end of the partition plug 3 facing the first chamber 21.

[0033] In some embodiments, please refer to Figures 1 to 2 , the conversion device for accumulator pressure test provided by the present invention preferably includes a base 9. The cylinder body 1 is arranged on the base 9. Walking wheels 91 are arranged below the base 9. Among them, a positioning groove is arranged on the upper end face of the base 9, and the length of the positioning groove is equivalent to the length of the cylinder body 1. The cylinder body 1 is inserted into the positioning groove, and the positioning groove restricts the freedom degree of the cylinder body 1 in the horizontal direction. Through the above settings, the conversion device for accumulator pressure test provided by the present invention is convenient to move.

[0034] 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 should be included in the protection scope of the present invention.

Claims

1. Conversion device for accumulator pressure test, characterized in that, It includes a cylinder body (1) with sealed axial ends. A liquid storage cavity (2) is provided inside the 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 first chamber (21) and a second chamber (22) that are not connected to each other. A first interface pipe (4) and a second interface pipe (5) are provided on the outer side wall of the cylinder body (1). One end of the first interface pipe (4) is connected to the first chamber (21), and the other end of the first interface pipe (4) is used to connect to an accumulator housing. One end of the second interface pipe (5) is connected to the second chamber (22), and the other end of the second interface pipe (5) is used to connect to a pressure boosting device.

2. The conversion device for accumulator pressure test according to claim 1, characterized in that, The first interface pipe (4) is connected to the accumulator housing through a pressure boosting pipe (6). The pressure boosting pipe (6) includes a main pipe (61) and a plurality of branch pipes (62) connected to the main pipe (61). The main pipe (61) is connected to the first interface pipe (4), and the branch pipes (62) are used to connect to the accumulator housing.

3. The conversion device for accumulator pressure test according to claim 2, characterized in that, A hydraulic pressure gauge (7) is provided on the main pipe (61).

4. The conversion device for accumulator pressure test according to claim 2, characterized in that, A switch valve is provided on the branch pipe (62).

5. The conversion device for accumulator pressure testing according to claim 2, characterized in that A stabilizing frame (8) is connected between the main pipe (61) and the cylinder body (1).

6. The conversion device for accumulator pressure test according to claim 1, wherein, One end of the cylinder body (1) is provided with an assembly port communicating with the liquid storage cavity (2). A sealing plug (11) is arranged in the assembly port. The first chamber (21) is arranged on the side close to the sealing plug (11). A liquid infusion channel (12) for communicating with the first chamber (21) is provided on the sealing plug (11). The first interface pipe (4) penetrates the side wall of the cylinder body (1) and is communicated with the liquid infusion channel (12).

7. The conversion device for accumulator pressure testing according to claim 6, characterized in that, A liquid guiding groove (13) is provided on the end face of the sealing plug (11) facing the first chamber (21). The liquid infusion channel (12) is connected to the bottom of the liquid guiding groove (13). A protruding portion (31) adapted to the liquid guiding groove (13) is provided at one end of the partition plug (3) facing the first chamber (21).

8. The conversion device for accumulator pressure test according to claim 1, characterized in that, It further includes a base (9). The cylinder body (1) is arranged on the base (9). Traveling wheels (91) are provided below the base (9).

9. The conversion device for accumulator pressure test according to claim 8, characterized in that, A positioning groove is provided at the upper end of the base (9). The cylinder body (1) is inserted into the positioning groove.

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