Helium detection tool for two-way long aluminum shell explosion-proof valve

Abstract

The utility model discloses a helium detection tool for a bi-pass long aluminum shell explosion-proof valve. The helium detection tool comprises a base, side plates, a positioning plate, a sealing ring groove, an air cylinder, a mounting plate, a supporting rod, a pressing plate, lightening holes, a bearing block, a check block and mounting holes. The bearing block is rotated in the direction away from the positioning plate, the positioning plate is horizontally sleeved with the to-be-detected bi-pass long aluminum shell, then the bearing block is rotated to reset and abut against the bottom end of the to-be-detected bi-pass long aluminum shell, in other words, the to-be-detected bi-pass long aluminum shell is subjected to positioning operation before detection, and then a proper mounting hole is selected according to the size of the bi-pass long aluminum shell. The supporting rod is fixedly connected with the proper mounting hole, so that the pressing plate is always kept in the middle of the aluminum shell battery for mounting, the detection opening can correspond to the air outlet, and the situation that when the air cylinder drives the pressing plate to descend, the bi-pass long aluminum shell is warped due to uneven stress is also avoided.

Description

Technical Field

[0001] The utility model specifically relates to a helium detection tooling for a double - through long aluminum shell explosion - proof valve. Background Technique

[0002] As a type of battery, power batteries are widely used in people's daily lives. A power battery is a power source that provides power for tools and is a storage battery that powers electric vehicles, electric trains, electric bicycles, and golf carts. Power batteries are the core components of new energy vehicles and an important direction for future energy transformation. The components of a power battery housing generally include a housing and an explosion - proof valve installed on the housing. After the housing and the explosion - proof valve are assembled, it is necessary to detect the airtightness of the installation position of the explosion - proof valve. Among them, helium detection is the main leak detection method for current battery structural components.

[0003] Although the current helium detection tooling for explosion - proof valves has developed relatively maturely, there are still some defects. For example, a helium detection tooling and helium detection equipment disclosed in the patent with the publication number CN218725072U is provided with a positioning member with a fitting surface. When in use, a double - through long aluminum shell is sleeved outside the positioning member (the cover plate is placed on the fitting surface), and the position of the explosion - proof valve is controlled above the detection port to meet the airtightness detection of the double - through long aluminum shell. However, there are certain differences in the sizes of aluminum shell batteries. After the aluminum shell is sleeved on the positioning member, since the position of the pressing plate does not necessarily align with the explosion - proof valve in the middle of the aluminum shell, the aluminum shell is unevenly stressed and undergoes a certain amount of warping and displacement, which affects the subsequent helium detection. Moreover, when the size of the aluminum shell is too large, it is also easy to shift when sleeved on the positioning member. Content of the Utility Model

[0004] The purpose of the utility model is to provide a helium detection tooling for a double - through long aluminum shell explosion - proof valve to solve the problems raised in the above - mentioned background technique.

[0005] To achieve the above - mentioned purpose, the present invention provides the following technical solution: A helium detection tooling for a double - through long aluminum shell explosion - proof valve, comprising:

[0006] A base, one end of the base is provided with a side plate, and the side plate is fixedly connected to the base by bolts;

[0007] A mounting plate, the mounting plate is arranged on the base, the bottom end of the mounting plate is fixedly connected with a plurality of support rods, and a number of mounting holes are uniformly formed on the base, and the support rods are connected to the base through the mounting holes

[0008] A cylinder, the fixed end of the cylinder is fixedly connected to the mounting plate; the telescopic end of the cylinder passes through the mounting plate and is fixedly connected with a pressing plate;

[0009] A positioning plate, the positioning plate is fixedly connected to the side plate by bolts, and the positioning plate is used for sleeving a double - through long aluminum shell to be detected;

[0010] A load-bearing block, which is rotatably connected to the base through a bearing; a stop block is arranged on one side of the load-bearing block close to the side plate, and the stop block is fixedly connected to the base. The load-bearing block and the stop block are used to cooperate to abut against the double-pass long aluminum shell to be detected.

[0011] Preferably, a cavity is formed in the pressing plate, an air inlet communicating with the cavity is formed on the side wall of the pressing plate, and an air outlet communicating with the cavity is formed on the bottom wall of the pressing plate; a detection cavity is formed in the positioning plate, a detection port corresponding to the air outlet is formed at the top of the positioning plate, and the detection cavity communicates with the detection port. An air extraction port communicating with the detection cavity is further formed on the side wall of the positioning plate.

[0012] Preferably, a plurality of sealing ring grooves are uniformly formed at the top of the positioning plate, and sealing rings are arranged in the sealing ring grooves.

[0013] Preferably, the detection port is arranged in the middle of the sealing ring groove.

[0014] Preferably, a helium detector for detecting helium is arranged in the detection cavity.

[0015] Preferably, the air extraction port is connected to a device for pumping vacuum.

[0016] Preferably, a plurality of weight-reducing holes are uniformly formed on the positioning plate.

[0017] Preferably, the positioning plate is an I-beam positioning plate.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] Rotate the load-bearing block until it is horizontal with the base, horizontally sleeved the double-pass long aluminum shell to be detected on the positioning plate, so that the position of the explosion-proof valve on the aluminum shell corresponds to the sealing ring on the sealing ring groove, and then rotate the load-bearing block to reset it and make the top of the load-bearing block abut against the bottom of the double-pass long aluminum shell to be detected. Use the stop block to limit the rotation amplitude of the load-bearing block to prevent the load-bearing block from rotating excessively, that is, perform the pre-detection positioning operation on the double-pass long aluminum shell to be detected, avoid the displacement of the double-pass long aluminum shell, and then select a suitable mounting hole according to the size of the double-pass long aluminum shell, and fixedly connect the support rod to the suitable mounting hole, so that the pressing plate is always installed in the middle of the aluminum shell battery, so that the detection port and the air outlet can correspond, and it also avoids the situation that the double-pass long aluminum shell warps and displaces due to uneven force when the cylinder drives the pressing plate to descend, improving the accuracy of subsequent helium detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structural split of the present utility model;

[0021] Figure 2 This is the overall schematic diagram of the present utility model;

[0022] Figure 3 This is the overall structural schematic diagram of the present utility model;

[0023] Figure 4 This is the pressing plate schematic diagram of the present utility model;

[0024] In the figure: 1, base; 2, side plate; 3, positioning plate; 4, sealing ring groove; 5, cylinder; 6, mounting plate; 7, support rod; 8, pressing plate; 9, weight reduction hole; 10, load-bearing block; 11, bearing; 12, stop block; 13, mounting hole. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figures 1-4 , the present invention provides a technical solution: a helium leak detection tooling for a double-pass long aluminum shell explosion-proof valve, including:

[0027] Base 1, one end of the base 1 is provided with a side plate 2, and the side plate 2 is fixedly connected to the base 1 by bolts;

[0028] Mounting plate 6, the mounting plate 6 is arranged on the base 1, the bottom end of the mounting plate 6 is fixedly connected with a plurality of support rods 7, and a plurality of mounting holes 13 are evenly formed in the base 1, and the support rods 7 are cooperatively connected with the base 1 through the mounting holes 13

[0029] Cylinder 5, the fixed end of the cylinder 5 is fixedly connected to the mounting plate 6; the telescopic end of the cylinder 5 passes through the mounting plate 6 and is fixedly connected with a pressing plate 8;

[0030] Positioning plate 3, the positioning plate 3 is fixedly connected to the side plate 2 by bolts, and the positioning plate 3 is used to sleeved the double-pass long aluminum shell to be detected;

[0031] Load-bearing block 10, the load-bearing block 10 is rotatably connected to the base 1 through a bearing 11; a stop block 12 is arranged on one side of the load-bearing block 10 close to the side plate 2, and the stop block 12 is fixedly connected to the base 1, and the load-bearing block 10 and the stop block 12 are used to cooperatively abut the double-pass long aluminum shell to be detected;

[0032] It should be noted that in the present utility model, the helium detection tooling is used to position the double-pass long aluminum shell, facilitating the airtightness detection of the installation position of the explosion-proof valve on the double-pass long aluminum shell. The helium detection tooling cooperates with a helium gas cylinder, a helium gas detector, and an air pipe to perform helium detection on the double-pass long aluminum shell and the cover plate fixed on the helium detection tooling. Moreover, both ends of the double-pass long aluminum shell are through.

[0033] Rotate the load-bearing block 10 until it is level with the base 1. Horizontally sleeved the double-pass long aluminum shell to be detected on the positioning plate 3, so that the position of the explosion-proof valve on the aluminum shell corresponds to the sealing ring on the sealing ring groove 4. Then rotate the load-bearing block 10 to reset it, and make the top of the load-bearing block 10 press against the bottom of the double-pass long aluminum shell to be detected. Use the stop block 12 to limit the rotation amplitude of the load-bearing block 10 to prevent the load-bearing block 10 from rotating excessively, that is, the positioning operation before detection of the double-pass long aluminum shell to be detected is performed. Then, according to the size of the double-pass long aluminum shell, select a suitable mounting hole 13 and fixedly connect the support rod 7 to the suitable mounting hole 13, so that the pressing plate 8 is always installed in the middle of the aluminum shell battery, enabling the detection port and the air outlet to correspond, and also avoiding the situation that the double-pass long aluminum shell warps due to uneven force when the cylinder 5 drives the pressing plate 8 to descend, reducing the impact on the subsequent helium detection result.

[0034] In this embodiment, a cavity is provided inside the pressing plate 8, an air inlet communicating with the cavity is provided on the side wall of the pressing plate 8, and an air outlet communicating with the cavity is provided on the bottom wall of the pressing plate 8; a detection cavity is provided inside the positioning plate 3, a detection port corresponding to the air outlet is provided on the top of the positioning plate 3, and the detection cavity communicates with the detection port. A suction port communicating with the detection cavity is also provided on the side wall of the positioning plate 3. Drive the cylinder 5 to make the pressing plate 8 descend to press the double-pass long aluminum shell to be detected, exhaust the gas in the detection cavity through the suction port, and then connect the air inlet to a helium gas source to introduce helium gas, so that the helium gas sprays out from the air outlet, thus facilitating the detection of the detection port.

[0035] In this embodiment, a plurality of sealing ring grooves 4 are evenly provided on the top of the positioning plate 3, sealing rings are provided in the sealing ring grooves 4 respectively. And since detection ports are provided in the middle of the sealing ring grooves 4 respectively, the sealing ring grooves 4 and the detection ports can be sealed by the sealing rings, so as to perform the subsequent operation of evacuating the inside of the detection cavity. Moreover, the sealing ring grooves 4 at different positions can be used to correspond to double-pass long aluminum shells of different sizes to be detected.

[0036] As Figure 1 shown, two sealing ring grooves 4 are evenly provided on the top of the positioning plate 3, and detection ports are provided in the sealing ring grooves 4 respectively. That is, the two detection ports, the detection cavity, and the suction port can form an "F"-shaped air flow channel. During use, select a suitable sealing ring groove 4 and paste the surface of the other sealing ring groove 4 with adhesive tape for secondary sealing to prevent the redundant sealing ring groove 4 from affecting the evacuation and subsequent detection operations.

[0037] In this embodiment, a helium detector for detecting helium is arranged in the detection cavity, and the concentration of helium is detected through the arrangement of the helium detector.

[0038] In this embodiment, the air extraction port is connected with a device for pumping vacuum, and the device for pumping vacuum can be an air pump.

[0039] In this embodiment, a plurality of weight-reducing holes 9 are evenly formed in the positioning plate 3. Through the arrangement of the weight-reducing holes 9, the overall weight of the device can be effectively reduced.

[0040] In this embodiment, the positioning plate 3 is an I-beam positioning plate.

[0041] The working principle and usage process of the present invention: Rotate the load-bearing block 10 until it is level with the base 1;

[0042] Select a suitable sealing ring groove 4, stick adhesive tape on the other sealing ring grooves 4, horizontally sleeved the double-pass long aluminum shell to be detected on the positioning plate 3, so that the position of the explosion-proof valve on the aluminum shell corresponds to the sealing ring on the suitable sealing ring groove 4;

[0043] Then rotate the load-bearing block 10 to reset it, and make the top of the load-bearing block 10 abut against the bottom of the double-pass long aluminum shell to be detected. Use the stop block 12 to limit the rotation amplitude of the load-bearing block 10 to prevent the load-bearing block 10 from rotating excessively;

[0044] Select a suitable mounting hole 13, fixedly connect the support rod 7 with the suitable mounting hole 13, select the driving cylinder 5 to make the pressing plate 8 press the double-pass long aluminum shell to be detected. At this time, the explosion-proof valve is located between the detection port and the air outlet. The detection cavity is pumped to vacuum through the air extraction port, and then helium is injected into the cavity of the pressing plate 8 through the air inlet. Helium can accumulate in the cavity. If the airtightness of the explosion-proof valve does not meet the requirements, helium will overflow from the explosion-proof valve into the detection cavity and be detected, otherwise it will not.

[0045] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A helium leak detection tooling for a double-pass long aluminum shell explosion-proof valve, characterized in that, Comprising: A base (1), one end of the base (1) is provided with a side plate (2), and the side plate (2) is fixedly connected to the base (1) by bolts; A mounting plate (6), the mounting plate (6) is arranged on the base (1), the bottom end of the mounting plate (6) is fixedly connected with a plurality of support rods (7), a number of mounting holes (13) are evenly formed in the base (1), and the support rods (7) are connected to the base (1) through the mounting holes (13) in a matching manner A cylinder (5), the fixed end of the cylinder (5) is fixedly connected to the mounting plate (6); the telescopic end of the cylinder (5) passes through the mounting plate (6) and is fixedly connected with a pressing plate (8); A positioning plate (3), the positioning plate (3) is fixedly connected to the side plate (2) by bolts, and the positioning plate (3) is used for sleeving a double-pass long aluminum shell to be detected; A load-bearing block (10), the load-bearing block (10) is rotatably connected to the base (1) through a bearing (11); a stop block (12) is arranged on one side of the load-bearing block (10) close to the side plate (2), the stop block (12) is fixedly connected to the base (1), and the load-bearing block (10) and the stop block (12) are used for cooperatively abutting against the double-pass long aluminum shell to be detected.

2. The helium leak detection tooling for a double-pass long aluminum shell explosion-proof valve according to claim 1, characterized in that: A cavity is formed in the pressing plate (8), an air inlet communicating with the cavity is formed in the side wall of the pressing plate (8), and an air outlet communicating with the cavity is formed in the bottom wall of the pressing plate (8); a detection cavity is formed in the positioning plate (3), a detection port corresponding to the air outlet is formed at the top of the positioning plate (3), and the detection cavity communicates with the detection port. An air extraction port communicating with the detection cavity is further formed in the side wall of the positioning plate (3).

3. A helium leak detection tooling for a double-pass long aluminum shell explosion-proof valve according to claim 2, characterized in that: A plurality of sealing ring grooves (4) are evenly formed at the top of the positioning plate (3), and sealing rings are arranged in the sealing ring grooves (4).

4. A helium leak detection tooling for a double-pass long aluminum shell explosion-proof valve according to claim 3, characterized in that: The detection port is arranged in the middle of the sealing ring groove (4).

5. The helium leak detection tooling for a double-pass long aluminum shell explosion-proof valve according to claim 4, characterized in that: A helium detector for detecting helium is arranged in the detection cavity.

6. A helium leak detection tooling for a double-pass long aluminum shell explosion-proof valve according to claim 5, characterized in that: The air extraction port is connected to a device for pumping vacuum.

7. A helium leak detection tooling for a double-pass long aluminum shell explosion-proof valve according to claim 6, characterized in that: A number of weight-reducing holes (9) are evenly formed in the positioning plate (3).

8. A helium leak detection tooling for a double-pass long aluminum shell explosion-proof valve according to claim 7, characterized in that: The positioning plate (3) is an I-beam positioning plate.

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