A tracer liquid test method leak detection device

Abstract

This utility model belongs to the field of sealing and leak detection technology, specifically disclosing a sealing and leak detection device using a tracer liquid test method. It includes a barrel and a top cover. Several connecting components are arranged on the side of the barrel, and an adjusting component that cooperates with the connecting components is arranged on the side of the top cover. A sealing groove is formed below the top cover, and a sealing strip is connected within the sealing groove. A digital pressure gauge, an inlet / outlet valve assembly, a safety valve, and handles are installed on the top cover. The digital pressure gauge and the inlet / outlet valve assembly are located near the side of the top cover, and the safety valve is located near the center of the top cover. Handles are symmetrically arranged on both sides of the safety valve. The adjusting component connects to the connecting components, and the distance between the top cover and the barrel is adjusted by the adjusting component. This allows the top cover and the barrel to compress the sealing strip, thereby adjusting the sealing performance. The inlet / outlet valve assembly allows for air intake and exhaust. The safety valve automatically opens to release pressure when the pressure inside the barrel exceeds a set pressure, ensuring system safety.

Description

Technical Field

[0001] This utility model relates to the field of sealing and leak detection technology, specifically a sealing and leak detection device using a tracer liquid test method. Background Technology

[0002] The principle of the tracer test is to apply a pressure difference between the inside and outside of the packaging. Under the action of the pressure difference, the tracer enters the sample or overflows from the sample (the tracer diffuses or overflows in the leakage path). The sealing performance of the packaging system is judged by visually inspecting or using instruments to detect the leaked tracer.

[0003] The tracer test method indicates the presence of a leak and provides a measurement of the relative size of the leak. This method is used for offline product testing and can detect or locate potential leaks in non-porous packaging (including rigid, semi-rigid, and flexible packaging). It is compatible with various product testing modes, provided the packaging contents do not obstruct the leak path.

[0004] A sealed container with vacuum and / or positive pressure for holding test liquids and test samples, pneumatically connected to a vacuum or pressure source, and equipped with pressure monitors and control devices. Appropriate clamps are typically required to limit the expansion of flexible packaging or the movement of non-fixed components when differential pressure is exposed. The clamps should minimize pressure on the flexible packaging, ensuring stable differential pressure conditions along the leakage path throughout the testing process. However, some devices use fixed sealing structures, such as bolted connections, making it difficult to adjust the pressure seal between the device and the top cover as needed, leading to incomplete sealing or excessive compression that damages the sample. Utility Model Content

[0005] The purpose of this invention is to provide a tracer liquid test method for leak detection, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tracer liquid test method for leak detection, comprising a barrel and a top cover mounted on top of the barrel. Several connecting components are arranged on the side of the barrel, and an adjusting component that cooperates with the connecting components is arranged on the side of the top cover. A sealing groove is formed below the top cover, and a sealing strip is connected within the sealing groove. A digital pressure gauge, an inlet / outlet valve assembly, a safety valve, and a handle are mounted on top of the top cover. The digital pressure gauge and the inlet / outlet valve assembly are located near the side of the top cover, the safety valve is located near the center of the top cover, and the handles are symmetrically arranged on both sides of the safety valve. The adjusting component connects to the connecting components, and the distance between the top cover and the barrel is adjusted by the adjusting component, thereby using the top cover and the barrel to compress the sealing strip, thus adjusting the leak detection. The inlet / outlet valve assembly enables air intake and exhaust. The safety valve automatically opens to release pressure when the pressure inside the barrel exceeds a set pressure, ensuring system safety. The digital pressure gauge facilitates real-time observation of pressure changes inside the barrel. The handles are mainly for easy removal of the top cover.

[0007] As a preferred embodiment of this invention, the barrel is provided with a drain outlet near the bottom, and a drain valve is provided on the drain outlet to facilitate the discharge of the tracer liquid.

[0008] In a preferred embodiment of this invention, the connecting assembly includes a fixing plate, screws, a pin, and a cotter pin. The fixing plate is connected to the barrel body, the pin is vertically positioned inside the fixing plate, the pin passes through the screw and the fixing plate, and the end of the pin is fixed by a cotter pin. Fixing the screw with the pin and cotter pin facilitates assembly and disassembly.

[0009] In a preferred embodiment of this invention, the adjusting assembly includes a nut pressure plate and a wing nut disposed inside the nut pressure plate, the wing nut being threaded onto the screw. Tightening the wing nut shortens the distance between the top cover and the barrel body, compressing the sealing strip to achieve an internal seal within the barrel.

[0010] In a preferred embodiment of this invention, the inlet and outlet valve assembly includes an inlet valve, an outlet valve, and a connection port. The connection port is connected to the top cover. The inlet valve is installed on the side of the connection port, and the outlet valve is installed above the connection port. The inlet valve is used to introduce an external air source, and the outlet valve is used for final exhaust, thereby balancing the pressure inside and outside the tank.

[0011] As a preferred embodiment of this invention, the intake valve end is connected to a pagoda connector, which is used to connect to an external air source.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention utilizes an adjustable structure with a wing nut and sealing strip to avoid uneven sealing or sample damage caused by traditional bolted connections. A digital pressure gauge provides accurate pressure monitoring, and combined with an automatic pressure relief valve, it prevents overpressure risks. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the front structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the exploded structure of this utility model.

[0016] In the diagram: 1. Barrel body; 101. Drain outlet; 1011. Drain valve; 2. Top cover; 201. Sealing groove; 3. Connecting assembly; 301. Fixing plate; 302. Screw; 303. Pin; 304. Cotter pin; 4. Adjusting assembly; 401. Nut pressure plate; 402. Wing nut; 5. Sealing strip; 6. Digital pressure gauge; 7. Inlet and outlet valve assembly; 701. Inlet valve; 7011. Pyramid connector; 702. Exhaust valve; 703. Connection port; 8. Safety valve; 9. Handle. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] Please see Figure 1-2 This utility model provides a technical solution: a tracer liquid test method for leak detection, including a barrel 1 and an upper cover 2 disposed on the top of the barrel 1. Several connecting components 3 are disposed on the side of the barrel 1, and an adjusting component 4 that cooperates with the connecting components 3 is disposed on the side of the upper cover 2. A sealing groove 201 is opened below the upper cover 2, and a sealing strip 5 is connected in the sealing groove 201. A digital pressure gauge 6, an inlet / outlet valve assembly 7, a safety valve 8 and a handle 9 are installed on the top of the upper cover 2. The digital pressure gauge 6 and the inlet / outlet valve assembly 7 are located near the side of the upper cover 2, the safety valve 8 is located near the middle of the upper cover 2, and the handles 9 are symmetrically disposed on both sides of the safety valve 8.

[0021] The adjusting component 4 is connected to the connecting component 3, and the adjusting component 4 adjusts the distance between the top cover 2 and the barrel 1, thereby using the top cover 2 and the barrel 1 to compress the sealing strip 5, thus adjusting the sealing performance. Air intake and exhaust are achieved through the inlet and outlet valve assembly 7. The safety valve 8 automatically opens to release pressure when the pressure inside the barrel exceeds the set pressure, ensuring system safety. The digital pressure gauge 6 facilitates real-time monitoring of pressure changes inside the barrel. A handle 9 is provided for easy removal of the top cover 2.

[0022] Furthermore, the barrel 1 is provided with a drain outlet 101 near the bottom, and a drain valve 1011 is provided on the drain outlet 101 to facilitate the discharge of tracer liquid.

[0023] Furthermore, the connecting assembly 3 includes a fixing plate 301, a screw 302, a pin 303, and a cotter pin 304. The fixing plate 301 is connected to the barrel body 1. The pin is vertically positioned inside the fixing plate 301. The pin 303 passes through the screw 302 and the fixing plate 301, and its end is fixed by the cotter pin 304. Fixing the screw 302 with the pin 303 and cotter pin 304 facilitates assembly and disassembly.

[0024] Furthermore, the adjusting assembly 4 includes a nut plate 401 and a wing nut 402 disposed inside the nut plate 401, the wing nut 402 being threaded onto the screw 302. By tightening the wing nut 402, the distance between the upper cover 2 and the barrel 1 is shortened, compressing the sealing strip 5 to achieve an internal seal in the barrel 1.

[0025] Furthermore, the inlet and outlet valve assembly 7 includes an inlet valve 701, an outlet valve 702, and a connection port 703. The connection port 703 is connected to the upper cover 2. The inlet valve 701 is installed on the side of the connection port 703, and the outlet valve 702 is installed above the connection port 703. The inlet valve 701 is used to introduce an external air source, and the outlet valve 702 is used for final exhaust, so as to balance the pressure inside and outside the barrel 1.

[0026] Furthermore, the intake valve 701 is connected to a pagoda connector 7011 at its end, which is used to connect to an external air source.

[0027] In summary, this device uses the threaded engagement of the wing nut 402 and the screw 302 to adjust the distance between the upper cover 2 and the barrel 1, and compresses the sealing strip 5 to achieve dynamic sealing, adapting to samples of different sizes. During use, a digital pressure gauge 6 is provided on the upper surface of the upper cover 2 for real-time observation of pressure changes inside the barrel. The upper cover 2 is equipped with a safety valve 8, which automatically opens to release pressure when the pressure inside the barrel exceeds the set pressure, ensuring system safety. The sample to be tested is placed in the barrel, and the top cover 2 is fixed to the barrel body 1 with the wing nut 402. The external air source is connected to the pagoda connector 7011, the air inlet valve 701 is opened, and the air outlet valve 702 is closed. The pressure inside the barrel is observed through the digital pressure gauge 6. When the pressure inside the barrel changes to the required pressure, the air inlet valve 701 is closed to maintain the pressure inside the barrel, so that a pressure difference is formed between the inside of the sample and the inside of the barrel. If there is a leak in the sample packaging, the tracer liquid will diffuse into the packaging through the leak path. After a certain period of time, the air outlet valve 702 is opened to balance the pressure inside and outside the barrel body 1. Then the wing nut 402 is opened, the sample is taken out, and the packaging can be visually observed to see if there is a leak.

[0028] It is worth noting that the entire device is controlled by a master control button. Since the device matched with the control button is a common device and belongs to existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tracer liquid test method for leak detection, characterized in that: The container includes a barrel body (1) and a top cover (2) on top of the barrel body (1). Several connecting components (3) are provided on the side of the barrel body (1). An adjusting component (4) that cooperates with the connecting components (3) is provided on the side of the top cover (2). A sealing groove (201) is provided below the top cover (2). A sealing strip (5) is connected in the sealing groove (201). A digital pressure gauge (6), an inlet / outlet valve assembly (7), a safety valve (8) and a handle (9) are installed on the top cover (2). The digital pressure gauge (6) and the inlet / outlet valve assembly (7) are located near the side of the top cover (2). The safety valve (8) is located near the middle of the top cover (2). The handle (9) is symmetrically arranged on both sides of the safety valve (8).

2. The tracer liquid test method for leak detection device according to claim 1, characterized in that: The barrel (1) has a drain outlet (101) near the bottom, and a drain valve (1011) is provided on the drain outlet (101).

3. The tracer liquid test method for leak detection device according to claim 1, characterized in that: The connecting assembly (3) includes a fixing plate (301), a screw (302), a pin (303), and a cotter pin (304). The fixing plate (301) is connected to the barrel body (1). The pin is vertically arranged inside the fixing plate (301). The pin (303) passes through the screw (302) and the fixing plate (301), and the end of the pin (303) is fixed by the cotter pin (304).

4. The tracer liquid test method for leak detection device according to claim 1, characterized in that: The adjustment assembly (4) includes a nut plate (401) and a wing nut (402) disposed inside the nut plate (401), the wing nut (402) being threaded onto the screw (302).

5. The tracer liquid test method for leak detection device according to claim 1, characterized in that: The inlet and outlet valve assembly (7) includes an inlet valve (701), an outlet valve (702) and a connection port (703). The connection port (703) is connected to the top cover (2). The inlet valve (701) is installed on the side of the connection port (703), and the outlet valve (702) is installed above the connection port (703).

6. The tracer liquid test method for leak detection device according to claim 5, characterized in that: The intake valve (701) is connected to a pagoda connector (7011) at its end.

Images