A connecting pipe joint device with automatic leak detection function

Abstract

The application discloses a connecting pipe joint device with an automatic leak detection function, which comprises a joint, a flow path arranged in the joint, a flow inlet and a filling opening arranged on the surface of the joint, and a pressure balance liquid filled into the flow path through the filling opening. The application can detect the air tightness during continuous operation and intermittent operation of the equipment, has a simple structure, does not need a leak detection device, and has high economic benefits.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of leak detection joints, in particular to a connecting pipe joint device with automatic leak detection function. BACKGROUND

[0002] At present, in the joint device air tightness leak detection methods, there are helium mass spectrometry leak detection, halogen leak detection, differential pressure leak detection, water leak detection and other leak detection methods, among which helium mass spectrometry leak detection and halogen leak detection are the most commonly used leak detection methods; But these existing leak detection measures need to stop the equipment running and then carry out air tightness leak detection, without considering air tightness leak detection under the working state of the equipment. SUMMARY

[0003] The present application mainly solves the problems existing in the prior art, and provides a joint with self-detection function for judging whether leakage occurs when the working state of the equipment leaks.

[0004] The present application is realized through the following technologies:

[0005] A connecting pipe joint device with automatic leak detection function, comprising: a joint; the joint is divided into a joint body and a fixed plate, the fixed plate is fixed outside the joint body, and the joint body is fixed on the equipment through the fixed plate.

[0006] The fixed plate is internally provided with a U-shaped flow path, and the fixed plate is externally provided with a light transmission sheet, which can observe the condition of the flow path in real time, and the light transmission sheet is further provided with a scale.

[0007] The side surface of the fixed plate is provided with a filling port, the filling port is communicated with the U-shaped flow path, and the filling port is used to fill pressure balance liquid into the flow path, so that the liquid level height of the pressure balance liquid on both sides of the U-shaped flow path is consistent on the scale; the pressure balance liquid is preferably distilled water or other non-toxic and non-volatile liquid.

[0008] The joint body is provided with a flow inlet below the fixed plate; the flow inlet is communicated with one end of the flow path, when leakage occurs, the leaked working medium will flow into the U-shaped flow path from the flow inlet, and the generated pressure will cause the liquid level height difference of the pressure balance liquid in the U-shaped flow path, so as to determine whether the air tightness is tight.

[0009] The joint body is provided with a sealing ring below the flow inlet, which is used to enhance the air tightness of the joint.

[0010] The method of using this invention is as follows: After the connector and battery heat exchange plate are installed, the filling port should face upwards; the pressure balancing fluid is added through the filling port (when adding the pressure balancing fluid, all plugs on the connector are removed to ensure that the liquid level on both sides is consistent; after the pressure balancing fluid is injected, only the plug at the pressure balancing fluid filling port is installed); when the equipment is running without working fluid leakage, the liquid levels at both ends of the pressure balancing fluid are equal (the heights at the scale positions on the light-transmitting sheet are consistent); when the equipment is running with working fluid leakage, the working fluid will generate pressure through the flow inlet on the connector, and the pressure balancing fluid stored in the connector will become unbalanced due to pressure imbalance, resulting in the liquid levels at both ends of the pressure balancing fluid not being equal (the heights at the scale positions on the light-transmitting sheet are inconsistent).

[0011] The beneficial effects of this invention are:

[0012] 1. This device is capable of airtightness testing during both continuous and intermittent operation of the equipment.

[0013] 2. This device has a simple structure, requires no leak detection equipment, and has high economic benefits. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention.

[0015] Figure 2 This is a cross-sectional view of the structural schematic diagram of the present invention.

[0016] Figure 3 This is a vertical state diagram of the flow path of the present invention.

[0017] Meaning of reference numerals in the attached diagram: 1. Connector body; 2. Fixing plate; 3. Flow path; 4. Transmitting sheet; 5. Filling port; 6. Flow inlet; 7. Sealing ring. Detailed Implementation

[0018] To make the technical solution, objectives and advantages of the present invention clearer, the present invention will be further explained and described below in conjunction with the accompanying drawings and embodiments.

[0019] like Figures 1-2 As shown, a connecting pipe joint device with automatic leak detection function includes: a joint; the joint is divided into a joint body 1 and a fixing plate 2; the fixing plate 2 is fixed on the outside of the joint body 1, dividing the joint body 2 into two sections, one section connected to the connecting pipe and the other section connected to the equipment; the joint body 1 is fixed to the equipment by the fixing plate 2.

[0020] The fixed plate 2 has a U-shaped flow path 3 inside. When the connector is installed on the equipment, the U-shaped flow path 3 is vertical. The fixed plate 2 is equipped with a light-transmitting sheet 4, which covers the surface of the flow path 3, allowing real-time observation of the flow path 3. The light-transmitting sheet 4 is also equipped with scales for judging the liquid level.

[0021] The side of the fixed plate 2 is provided with two filling openings 5, which are respectively communicated with two ends of the U-shaped flow path 3; when the U-shaped flow path 3 is in a vertical state, the opening of one of the filling openings 5 is upward; the pressure balance liquid is filled into the flow path 3 through the filling opening 5, so that the liquid level height of the pressure balance liquid on both sides in the U-shaped flow path 3 is consistent on the scale; the pressure balance liquid is preferably distilled water or other non-toxic and non-volatile liquid.

[0022] The joint body 1 is provided with a flow inlet 6 below the fixed plate 2; the flow inlet 6 is communicated with one end of the flow path 3; when leakage occurs, the leaked working medium will flow into the U-shaped flow path 3 from the flow inlet 6, and the pressure generated will make the liquid level height difference of the pressure balance liquid in the U-shaped flow path 3, so as to determine whether the gas seal is tight.

[0023] The joint body 1 is provided with a sealing ring 7 below the flow inlet 6, which is used to enhance the air tightness of the joint.

[0024] The use method of the present application is as follows: after the joint is installed with the battery heat exchange plate, the direction of the filling opening is upward; the pressure balance liquid is filled through the filling opening (when the pressure balance liquid is filled, the plug on the joint is completely removed, so that the liquid level height on both sides is consistent, and after the pressure balance liquid is filled, only the plug at the pressure balance liquid filling opening is installed); when the equipment operates without working medium leakage, the liquid level of the pressure balance liquid on both sides is flat (the scale position height of the light transmission sheet is consistent); when the equipment operates with working medium leakage, the working medium will generate pressure through the flow inlet on the joint, and the pressure balance liquid stored in the joint will be unbalanced due to pressure, so that the liquid level height on both sides of the pressure balance liquid is not flat (the scale position height of the light transmission sheet is inconsistent).

[0025] The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the essence of the present application should be covered within the protection scope of the present application.

Claims

1. A connecting pipe joint device with an automatic leak detection function, characterized by comprising: The utility model relates to a joint for a fuel tank, comprising: a joint; a flow path is arranged in the joint, and a flow inlet and a filling port are arranged on the surface of the joint; the flow inlet is communicated with the flow path, so that leaked liquid enters the flow path from the flow inlet; the filling port is communicated with the flow path, so that pressure balance liquid is filled into the flow path; the joint comprises a joint body and a fixing plate arranged outside the joint body; the flow path and the filling port are arranged on the fixing plate, and the flow inlet is arranged on the joint body; the flow path is in a U shape.

2. The connecting pipe joint apparatus with automatic leak detection function according to claim 1, characterized in that: A sealing ring is arranged on the joint body and located below the flow inlet.

3. The connecting pipe joint apparatus with automatic leak detection function according to claim 1, characterized in that: A light-transmitting sheet for observing the flow path is mounted on the fixing plate.

4. The connecting pipe joint apparatus with automatic leak detection function according to claim 3, characterized in that: A scale is arranged on the light-transmitting sheet.

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