Leak detection device for sealed container components based on flow method

Abstract

The utility model discloses a sealed container part leak detection device based on flow method, including detection gas path, detection gas path includes detection gas source, pressure controller, first valve, first frock, second valve and gas flowmeter that connect gradually, detection gas source is used for providing detection gas, pressure controller is used for controlling detection gas path in detection gas pressure and keeps constant, first frock is used for fixedly waiting for the product of detection, and makes the air inlet end of waiting for the product of detection with the air outlet end intercommunication of first valve, the air inlet end of waiting for the product of detection with gas flowmeter intercommunication. The utility model discloses through setting high accuracy flowmeter and carrying out flow detection, can improve detection accuracy and the reliability of detection result greatly.

Description

Technical Field

[0001] This utility model relates to the field of detection device technology, and in particular to a leak detection device for sealed container components based on the flow method. Background Technology

[0002] The sealing requirements for general containers are not high; they only need to achieve an airtight seal to prevent the fluid inside from leaking out. However, many sealed containers need to achieve a certain level of pressure resistance and sealing performance to ensure the safety of the fluid inside during filling, transportation, and storage. Existing leak detection devices have poor detection accuracy. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a leak detection device for sealed container components based on the flow method.

[0004] The objective of this utility model is achieved through the following technical solution: A leak detection device for sealed container components based on flow rate method includes a detection gas path, wherein the detection gas path includes a detection gas source, a pressure controller, a first valve, a first tooling, a second valve, and a gas flow meter connected in sequence. The detection gas source is used to provide the detection gas; The pressure controller is used to maintain a constant pressure of the detection gas in the detection gas path; The first fixture is used to fix the product to be tested and to connect the air inlet of the product to the air outlet of the first valve. The air inlet of the product to be tested is connected to the gas flow meter.

[0005] Furthermore, it also includes a detection branch, the inlet of which is connected to the outlet of the pressure controller, and the outlet of which is connected to the inlet of the gas flow meter. The detection branch includes a third valve, a second tooling, and a fourth valve connected in sequence.

[0006] Furthermore, the first tooling includes a first half-mold and a second half-mold, and a receiving cavity adapted to the product to be tested is formed between the first half-mold and the second half-mold. The first half-mold is connected to the first valve, and the second half-mold is connected to the second valve.

[0007] Furthermore, an air inlet is provided on the side of the first half-mold away from the second half-mold, and the air inlet is connected to the air outlet of the first valve; The second half of the mold has an air outlet on the side away from the first half of the mold, and the air outlet is connected to the air inlet of the second valve.

[0008] Furthermore, the first half-mold is fixedly set, while the second half-mold is movably set, and the second half-mold is driven to move closer to or away from the first half-mold by a driving mechanism.

[0009] Furthermore, the driving mechanism is a cylinder or an electric telescopic rod.

[0010] Furthermore, a filter is provided between the detection gas source and the pressure controller.

[0011] Furthermore, pressure sensors are respectively provided between the filter and the pressure controller, between the first valve and the first clamp, and between the third valve and the second clamp.

[0012] Furthermore, the detection gas is nitrogen.

[0013] The beneficial effects of this utility model are: 1) This utility model can greatly improve the detection accuracy and reliability of the detection results by setting a high-precision flow meter for flow detection.

[0014] 2) By setting up a second tooling to form a detection branch, the equipment utilization rate can be improved and the operating cost can be reduced. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the leak detection device for sealed container components based on the flow method in this embodiment of the present invention. Figure 2 This is a three-dimensional view of the first tooling; Figure 3 This is a top view of the first tooling; In the diagram, 1. Gas source for detection; 2. Pressure controller; 3. First valve; 4. First tooling; 5. Second valve; 6. Gas flow meter; 7. Third valve; 8. Second tooling; 9. Fourth valve; 10. First half mold; 11. Second half mold; 12. Air inlet; 13. Air outlet; 14. Filter; 15. Pressure sensor. Detailed Implementation

[0016] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] See Figures 1-3 This utility model provides a technical solution: Example: like Figures 1-3As shown, a leak detection device for a sealed container component based on the flow method includes a detection gas path, which includes a detection gas source 1 (the detection gas is nitrogen), a pressure controller 2, a first valve 3, a first tooling 4, a second valve 5 and a gas flow meter 6 connected in sequence. A filter 14 is provided between the detection gas source 1 and the pressure controller 2. The detection gas source 1 is used to provide the detection gas; The pressure controller 2 is used to control the pressure of the detection gas in the detection gas path to remain constant; The first fixture 4 is used to fix the product to be tested and to connect the air inlet end of the product to be tested with the air outlet end of the first valve 3. The air inlet end of the product to be tested is connected to the gas flow meter 6.

[0018] It also includes a detection branch, the inlet of which is connected to the outlet of the pressure controller 2, and the outlet of which is connected to the inlet of the gas flow meter 6. The detection branch includes a third valve 7, a second tooling 8, and a fourth valve 9 connected in sequence.

[0019] The second tooling 8 has the same structure as the first tooling 4, such as... Figure 2 and Figure 3 As shown, the first tooling 4 includes a first half mold 10 and a second half mold 11, and a receiving cavity adapted to the product to be tested is formed between the first half mold 10 and the second half mold 11. In this embodiment, the receiving cavity is set inside the second half mold 11, and the first half mold 10 plays the role of sealing the second half mold 11 and allowing air to enter. Of course, the receiving cavity can also be set in half in the first half mold 10 and the second half mold 11 respectively.

[0020] The first half-mold 10 is connected to the first valve 3, and the second half-mold 11 is connected to the second valve 5.

[0021] The first half-mold 10 has an air inlet 12 on the side away from the second half-mold 11, and the air inlet 12 is connected to the air outlet of the first valve 3. The second half mold 11 has an air outlet 13 on the side away from the first half mold 10. The air outlet 13 is connected to the air inlet end of the second valve 5. The air inlet 12 and the air outlet 13 are respectively connected to the accommodating cavity.

[0022] The first half-mold 10 is fixedly set, and the second half-mold 11 is movably set. The second half-mold 11 is driven to move closer to or away from the first half-mold 10 by a driving mechanism.

[0023] The driving mechanism is a cylinder or an electric telescopic rod.

[0024] Pressure sensors 15 are respectively provided between the filter 14 and the pressure controller 2, between the first valve 3 and the first clamp, and between the third valve 7 and the second clamp.

[0025] The pressure controller 2 and the gas flow meter 6 are existing technologies (such as patents with publication numbers CN218924593U and CN218795708U), and their specific structures and working principles will not be elaborated here.

[0026] Working principle: The second half mold 11 is opened by the drive mechanism, separating it from the first half mold 10 to expose the receiving cavity. The product to be tested is placed into the receiving cavity, and the drive mechanism moves the second half mold 11 toward the first half mold 10 and closes them, thus sealing the receiving cavity.

[0027] Then open the detection gas source 1 and the first valve 3 and the second valve 5 (the third valve 7 and the fourth valve 9 are kept closed). The detection gas source 1 is introduced into the gas path. At this time, the gas path pressure is adjusted by the pressure controller 2 and the gas path pressure is kept constant (e.g., 0.2 MPa).

[0028] Set a detection standard for the flow meter (a threshold such as 0.2 ml / min). If the flow meter's detection value exceeds the detection standard within a fixed time, it indicates that the product has a leak and is unqualified; otherwise, it is qualified.

[0029] The detection branch can be used by closing the first valve 3 and the second valve 5 and opening the third valve 7 and the fourth valve 9 when the main line detection ends, thereby achieving continuous detection and improving detection efficiency.

[0030] This invention improves the accuracy and reliability of flow detection by using a high-precision flow meter.

[0031] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A leak detection device for sealed container components based on the flow rate method, characterized in that: It includes a detection gas path, which includes a detection gas source, a pressure controller, a first valve, a first tooling, a second valve, and a gas flow meter connected in sequence. The detection gas source is used to provide the detection gas; The pressure controller is used to maintain a constant pressure of the detection gas in the detection gas path; The first fixture is used to fix the product to be tested and to connect the air inlet of the product to the air outlet of the first valve. The air inlet of the product to be tested is connected to the gas flow meter.

2. The leak detection device for sealed container components based on the flow method according to claim 1, characterized in that: It also includes a detection branch, the inlet of which is connected to the outlet of the pressure controller, and the outlet of which is connected to the inlet of the gas flow meter. The detection branch includes a third valve, a second tooling, and a fourth valve connected in sequence.

3. The leak detection device for sealed container components based on the flow method according to claim 2, characterized in that: The first tooling includes a first half-mold and a second half-mold, and a receiving cavity adapted to the product to be tested is formed between the first half-mold and the second half-mold. The first half-mold is connected to the first valve, and the second half-mold is connected to the second valve.

4. The leak detection device for sealed container components based on the flow method according to claim 3, characterized in that: An air inlet is provided on the side of the first half-mold away from the second half-mold, and the air inlet is connected to the air outlet of the first valve; The second half of the mold has an air outlet on the side away from the first half of the mold, and the air outlet is connected to the air inlet of the second valve.

5. The leak detection device for sealed container components based on the flow method according to claim 4, characterized in that: The first half-mold is fixed, and the second half-mold is movable. The second half-mold is driven to move closer to or away from the first half-mold by a drive mechanism.

6. The leak detection device for sealed container components based on the flow method according to claim 5, characterized in that: The driving mechanism is a cylinder or an electric telescopic rod.

7. The leak detection device for sealed container components based on the flow method according to claim 2, characterized in that: A filter is provided between the detection gas source and the pressure controller.

8. The leak detection device for sealed container components based on the flow method according to claim 7, characterized in that: Pressure sensors are respectively installed between the filter and the pressure controller, between the first valve and the first clamp, and between the third valve and the second clamp.

9. The leak detection device for sealed container components based on the flow method according to claim 1, characterized in that: The detection gas is nitrogen.

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