Novel leak hunting device

Abstract

The utility model discloses a novel leak hunting device, which comprises a machine table and a sealing jig fixedly arranged on the machine table, the sealing jig comprises an upper jig and a lower jig which are matched with each other, the lower jig is of a hollow sealing structure, a first groove is concavely arranged in the central area of the upper surface of the lower jig, a second groove is concavely arranged in the central area of the first groove, and the upper surface of the lower jig is provided with a first through hole. A jig hole is formed in the center of the second groove; and the upper jig is arranged above the lower jig in a covering manner. The strategy device is reasonable in structural design, easy and convenient to operate and high in measurement accuracy, through the arrangement of the sealing jig, when the to-be-measured product is attached to the jig hole, the first sealing cavity is formed above the to-be-measured product, the second sealing cavity is formed below the to-be-measured product, and the measurement accuracy of the to-be-measured product is improved. The first sealing chamber is vacuumized through the vacuumizing device, and the second sealing chamber is communicated with the atmosphere, so that the gas leakage amount of the product can be determined by detecting the change of the pressure value in the first sealing chamber in unit time.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical engineering, in particular to a novel leakage detection device. Background Art

[0002] Air tightness testing is often used to test the sealing performance of products or equipment to ensure that there is no air leakage during the use of the product, thereby ensuring the quality and performance of the product. The existing airtight machines test the air permeability of products by pressurizing, without vacuum (pressure) function, and cannot meet the testing requirements of customers. Therefore, it is necessary to provide a new type of leak detection device with vacuum function. Utility Model Content

[0003] The utility model provides a new type of leak detection device, which tests the air tightness of the product by evacuating the vacuum chamber to a preset value and then testing the change in air pressure in the vacuum chamber after a period of time. The structure is reasonably designed, the operation is simple and convenient, and the test accuracy is high. The specific scheme is as follows:

[0004] A novel leak detection device, comprising:

[0005] Machine;

[0006] A sealing jig, the sealing jig includes an upper jig and a lower jig which are arranged in a matching manner. The lower jig is a hollow sealing structure, fixedly mounted on the upper surface of the machine, and a first groove is recessed in the central area of ​​its upper surface, a second groove is recessed in the central area of ​​the first groove, and a jig hole is opened in the center of the second groove; the upper jig cover is arranged above the lower jig; thereby, by attaching the product to be tested to the second groove, a first closed chamber located above the product to be tested and a second closed chamber located below the product to be tested can be formed, the first closed chamber is connected to the vacuum pumping component, and the second closed chamber is connected to the atmosphere.

[0007] Furthermore, a first boss is provided on the outer edge of the first groove, and a second boss corresponding to the first boss is provided at a corresponding position of the upper jig; thus, when the upper jig is covered on the lower jig, the first boss abuts against the second boss to form the first closed chamber.

[0008] Furthermore, a first gasket is disposed around the outer edge of the first boss; a second gasket is disposed around the outer edge of the second boss; thus, when the upper fixture cover is placed on the lower fixture, the first gasket abuts against the second gasket to perform a sealing function.

[0009] Furthermore, a vacuum joint is provided at the center of the upper fixture, and the vacuum joint is connected to the vacuum pumping component.

[0010] Furthermore, the vacuum pumping component includes a vacuum pump, a vacuum pumping pipeline and a vacuum valve arranged on the vacuum pumping pipeline, one end of the vacuum pumping pipeline is connected to the vacuum pump, and the other end is connected to the vacuum joint.

[0011] Furthermore, the leak detection device also includes a pressure gauge, which is arranged on the vacuum pipeline between the vacuum valve and the vacuum joint and is used to measure the air pressure value in the first closed chamber.

[0012] Furthermore, the leak detection device also includes a clamping mechanism, which includes two groups and are respectively arranged on two sides of the sealing jig and are used to press the upper jig onto the lower jig.

[0013] Furthermore, the second groove is provided with a plurality of positioning holes for positioning the product to be tested.

[0014] The beneficial effect of the utility model is as follows: the utility model provides a novel leak detection device, which forms a first sealed chamber above the product and a second sealed chamber below the product through the setting of a sealing fixture, and the first sealed chamber is evacuated, and the second sealed chamber is connected to the atmosphere, so that the gas leakage of the product can be determined by detecting the change in the pressure value in the first sealed chamber per unit time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the sealing fixture structure of a new type of leak detection device of the utility model;

[0016] Figure 2 It is a top view, a front view and a left view of a machine platform of a novel leak detection device of the utility model;

[0017] Numbers in the figure: 1, machine; 2, sealing fixture; 21, upper fixture; 211, second boss; 212, second gasket; 213, vacuum joint; 22, lower fixture; 221, first groove; 222, second groove; 2221, positioning hole; 223, fixture hole; 224, first boss; 225, first gasket. DETAILED DESCRIPTION

[0018] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0020] like Figure 1 , 2 As shown, the utility model provides a novel leak detection device, comprising: a machine platform 1 and a sealing fixture 2 fixedly arranged on the upper surface of the machine platform (1), the sealing fixture 2 comprising an upper fixture 21 and a lower fixture 22 which are arranged in a matching manner, the lower fixture 22 being a hollow sealing structure, preferably, the lower fixture 22 is a hollow cubic structure, the center area of ​​the upper surface of which is recessed with a first groove 221, the center area of ​​the first groove 221 is recessed with a second groove 222 for attaching a product to be tested, and the center of the second groove 222 is provided with a fixture hole 223; the upper fixture 21 is covered on the upper part of the lower fixture 22; thereby, by attaching the product to be tested on the second groove 222, a first closed chamber located above the product to be tested and a second closed chamber located below the product to be tested can be formed, the first closed chamber is connected to the vacuum pumping component, and the second closed chamber is connected to the atmosphere.

[0021] Therefore, the present application attaches the product to be tested to the fixture hole through the setting of a sealing fixture, so that a first sealed chamber is formed above the product to be tested and a second sealed chamber is formed below the product to be tested. The first sealed chamber is evacuated by a vacuum pumping device, and the second sealed chamber is connected to the atmosphere. The gas leakage amount of the product can be determined by detecting the change in the pressure value in the first sealed chamber per unit time.

[0022] Furthermore, a first boss 224 is provided around the outer edge of the first groove 221, and a second boss 221 corresponding to the first boss 224 is provided around the corresponding position of the upper fixture 21; thus, when the upper fixture 21 is covered on the lower fixture 22, the first boss 224 abuts against the second boss 221, and a first closed chamber is formed therein.

[0023] Furthermore, a first gasket 225 is disposed around the outer edge of the first boss 224 ; a second gasket 212 is disposed around the outer edge of the second boss 211 ; therefore, when the upper fixture 21 is placed on the lower fixture 22 , the first gasket 225 abuts against the second gasket 212 to perform a sealing function.

[0024] Furthermore, a vacuum joint 213 is provided at the center of the upper fixture 21, and the vacuum joint 213 is connected to the vacuum pumping component. Specifically, the vacuum pumping component includes a vacuum pump, a vacuum pumping pipeline, and a vacuum valve provided on the vacuum pumping pipeline, one end of the vacuum pumping pipeline is connected to the vacuum pump, and the other end is connected to the vacuum joint.

[0025] Furthermore, the leak detection device of the present application also includes a pressure gauge, which is arranged on the vacuum pipeline between the vacuum valve and the vacuum joint, and is used to measure the air pressure value in the first closed chamber.

[0026] Furthermore, the leak detection device of the present application also includes a clamping mechanism, which includes two groups, which are respectively arranged on two sides of the sealing jig 2 and are used to press the upper jig 21 onto the lower jig 22 .

[0027] Furthermore, a plurality of positioning holes 2221 are provided on the second groove 222 for positioning the product to be tested.

[0028] When in use, place the product to be tested on the fixture hole, cover the upper fixture, and press the clamping mechanism on the upper fixture to form a first closed chamber above the product to be tested and a second closed chamber below the product to be tested. Connect the second closed chamber to the atmosphere, and then use the vacuum device to pump the air pressure of the first closed chamber to a preset value. Use the pressure gauge to detect the pressure value of the first closed chamber per unit time to measure the gas leakage of the product to be tested. Assuming that the first closed chamber of the product to be tested is vacuumed to -50.00Kpa, after maintaining the pressure for 1 minute, the current air pressure value is read as -49.55Kpa, and the air pressure value is read again after 1 minute as -48.61Kpa, then the product leakage is 0.94Kpa.

[0029] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A novel leak detection device, characterized in that: include: Machine (1); A sealing jig (2), the sealing jig (2) comprising an upper jig (21) and a lower jig (22) which are arranged in a matching manner with each other, the lower jig (22) being a hollow sealing structure, fixedly mounted on the upper surface of the machine platform (1), and having a first groove (221) recessed in the central area of ​​its upper surface, a second groove (222) recessed in the central area of ​​the first groove (221), and a jig hole (223) opened in the center of the second groove (222); the upper jig (21) is covered on the upper part of the lower jig (22); thereby, by attaching the product to be tested to the second groove (222), a first closed chamber located above the product to be tested and a second closed chamber located below the product to be tested can be formed, the first closed chamber being connected to a vacuum pumping component, and the second closed chamber being connected to the atmosphere.

2. The leak detection device according to claim 1, characterized in that: A first boss (224) is provided around the outer edge of the first groove (221), and a second boss (211) corresponding to the first boss (224) is provided around the corresponding position of the upper jig (21); therefore, when the upper jig (21) is covered on the lower jig (22), the first boss (224) and the second boss (211) are in contact with each other to form the first closed chamber.

3. The leak detection device according to claim 2, characterized in that: A first gasket (225) is arranged around the outer edge of the first boss (224); a second gasket (212) is arranged around the outer edge of the second boss (211); therefore, when the upper fixture (21) is placed on the lower fixture (22), the first gasket (225) and the second gasket (212) abut against each other to achieve a sealing effect.

4. The leak detection device according to claim 1, characterized in that: A vacuum joint (213) is provided at the center of the upper fixture (21), and the vacuum joint (213) is connected to the vacuum extraction component.

5. The leak detection device according to claim 4, characterized in that: The vacuum pumping component comprises a vacuum pump, a vacuum pumping pipeline and a vacuum valve arranged on the vacuum pumping pipeline. One end of the vacuum pumping pipeline is connected to the vacuum pump, and the other end is connected to the vacuum joint (213).

6. The leak detection device according to claim 5, characterized in that: It also includes a pressure gauge, which is arranged on the vacuum pipeline between the vacuum valve and the vacuum joint (213) and is used to measure the air pressure value in the first closed chamber.

7. The leak detection device according to claim 1, characterized in that: It also includes a pressing mechanism, which is provided with two groups and is respectively arranged on two sides of the sealing jig (2) opposite to each other, and is used to press the upper jig (21) onto the lower jig (22).

8. The leak detection device according to claim 1, characterized in that: The second groove (222) is provided with a plurality of positioning holes (2221) for positioning the product to be tested.

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