A pipeline gas tightness detection device

Abstract

The utility model relates to a kind of pipeline airtightness detection devices, belong to pipeline detection technical field, and the device includes gas supply control component, loop closure component and pressure sensing component;Gas supply control component is configured to connect gas supply device;Loop closure component is equipped with gas input part, water inlet connecting part and water outlet connecting part;Pressure sensing component is configured to monitor the air pressure in the closed gas loop consisting of gas supply assembly, loop closure assembly and the liquid path to be measured;The output end of gas supply control component is in fluid communication with gas input part;Water inlet connecting part is adaptively connected to the water inlet of the liquid path to be measured;Water outlet connecting part is sealingly connected to the water outlet of the liquid path to be measured;Loop closure component includes test base body, gas input joint, water inlet detection joint and water outlet closure joint are integrally arranged on it;The device is simple in structure, convenient to operate, can effectively detect the airtightness of pipeline, and is suitable for airtightness detection of various liquid path systems.

Description

Technical Field

[0001] This utility model relates to the field of pipeline inspection equipment, and in particular to a pipeline airtightness testing device. Background Technology

[0002] With the development of science and technology, fluid systems in various devices are widely used in industry, medical fields, and laboratories. The airtightness of fluid systems is a crucial factor in ensuring the normal operation of equipment. Leaks in fluid systems not only affect the normal operation of the equipment but can also damage internal components and even cause safety accidents. Therefore, airtightness testing of fluid systems is of great significance.

[0003] However, a common problem with existing technologies is that for liquid piping systems already installed in equipment, the airtightness is typically tested by passing water through the system and observing for leaks. This method presents significant uncontrollable risks: if a leak occurs, the liquid may seep into the equipment, causing irreversible damage to electronic components, precision instruments, etc., leading to equipment malfunction or even complete destruction. Furthermore, this detection method lacks quantitative standards, making it difficult to accurately identify even minor leaks. The results often rely on manual observation, are highly subjective, and have low reliability.

[0004] Therefore, there is an urgent need for a safe, simple, and reliable pipeline airtightness testing device that can test the sealing of equipment liquid pipelines through gas pressure testing without using liquids, thus avoiding the risk of liquid leakage damaging the equipment. It should also be easy to operate, accurate in testing, and highly applicable. Utility Model Content

[0005] To address the uncontrollable risks associated with existing technologies that rely on observing for leaks after water flow to test the airtightness of liquid pipelines, this paper proposes a pipeline airtightness testing device based on air pressure measurement. This device aims to provide a safe, simple, and reliable way to test the sealing performance of equipment's liquid pipelines.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: a pipeline airtightness testing device is provided, including a gas supply control component, a loop closure component, and a pressure sensing component. The gas supply control component is configured to be connected to a gas supply device; the loop closure component is provided with a gas input section, a water inlet connection section, and a water outlet connection section; the pressure sensing component is configured to monitor the gas pressure in the closed gas loop formed by the gas supply component, the loop closure component, and the liquid path to be tested; the output end of the gas supply control component is connected to the gas input section; the water inlet connection section is adapted to be connected to the water inlet of the liquid path to be tested; and the water outlet connection section is sealed to be connected to the water outlet of the liquid path to be tested.

[0007] Preferably, the gas supply control component includes a valve assembly, with its inlet end connected to the gas supply device and its outlet end constituting the output end.

[0008] Furthermore, the valve assembly includes a ball valve and a solenoid valve.

[0009] Preferably, the loop closure component includes a test substrate on which the following are integrated: a gas input connector, constituting the gas input section; a water inlet detection connector, constituting the water inlet connection section; and a water outlet closure connector, constituting the water outlet connection section.

[0010] Furthermore, the pressure sensing component includes a pressure sensor, the test substrate is provided with a sensing connector, and the pressure sensor is fixed to the sensing connector and connected to the gas input connector.

[0011] Preferably, the test substrate is provided with: an input detection channel connecting the gas input connector and the water inlet detection connector; and a loop closure channel connecting the water outlet closure connector.

[0012] Furthermore, the test substrate is also provided with a sensing pressure channel, which connects the input detection channel and the sensing connector.

[0013] Preferably, the outlet end of the valve assembly is connected to the gas inlet end via a flexible conduit.

[0014] The beneficial effect of this invention lies in that by using gas instead of liquid for detection, it avoids the risk of water leakage damaging internal components, which is a common problem in existing technologies that rely on observing for leaks after passing water through the pipeline. This invention's pipeline airtightness detection device has a simple structure and is easy to operate. By controlling the gas entry through a ball valve and forming a closed system, a pressure sensor monitors pressure changes, accurately determining whether a leak exists in the liquid path. This provides a safe, simple, and reliable inspection method. Compared to existing technologies, this invention eliminates the need for liquid during detection, significantly reducing risks and improving efficiency and reliability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a pipeline airtightness testing device.

[0016] Figure 2 This is a schematic diagram of the test substrate in a pipeline airtightness testing device.

[0017] Figure 3 This is a schematic diagram of the sensor connector and input detection channel in a pipeline airtightness testing device.

[0018] Figure 4 This is a schematic diagram of the closed loop channel in a pipeline airtightness testing device.

[0019] In the diagram: 100, valve assembly; 200, test substrate; 201, gas input connector; 202, water inlet detection connector; 203, water outlet sealing connector; 204, sensor connector; 205, input detection channel; 206, loop sealing channel; 207, sensing pressure channel; 300, pressure sensor; 400, flexible conduit. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0021] Please see Figures 1-4 A pipeline airtightness testing device includes an air supply control component, a circuit sealing component, and a pressure sensing component.

[0022] The gas supply control component is configured to connect to the gas supply device and is used to control the gas supply. The gas supply control component includes a valve assembly 100, which includes a ball valve and a solenoid valve. The inlet end of the valve assembly 100 is connected to the gas supply device, and the outlet end constitutes the output end of the gas supply control component. The outlet end of the valve assembly 100 is connected to the gas input section via a flexible conduit 400. The flexible conduit 400 is made of pressure-resistant rubber to ensure that it will not rupture due to excessive gas pressure during testing.

[0023] The loop-closure component includes a gas inlet, a water inlet connection, and a water outlet connection. The loop-closure component comprises a test substrate 200, on which a gas inlet connector 201, a water inlet detection connector 202, and a water outlet sealing connector 203 are integrated. The gas inlet connector 201 constitutes the gas inlet, the water inlet detection connector 202 constitutes the water inlet connection, and the water outlet sealing connector 203 constitutes the water outlet connection.

[0024] The gas inlet connector 201 is matched and connected to the flexible conduit 400.

[0025] The water inlet test connector 202 is designed to be compatible with various sizes of water inlets for the test liquid path.

[0026] The water outlet sealing connector 203 can fit tightly against the inner wall of the water outlet of the liquid circuit under test, achieving a good sealing effect.

[0027] Both the inlet testing connector 202 and the outlet sealing connector 203 are fixed to the test base 200 by a snap-fit ​​structure, which makes it easy to replace the sealing plugs of different specifications to adapt to outlets of different diameters.

[0028] The test substrate 200 is equipped with an input detection channel 205 and a loop closure channel 206. The input detection channel 205 connects the gas input connector 201 and the water inlet detection connector 202, and has a smooth inner wall to reduce airflow resistance. The loop closure channel 206 connects to the water outlet closure connector 203.

[0029] The test base 200 is also equipped with a sensor connector 204, which adopts a standard thread design to facilitate the installation of the pressure sensor 300. The test base 200 is also equipped with a sensing pressure channel 207, which connects the input detection channel 205 and the sensor connector 204 to ensure that the pressure sensor 300 can accurately measure the pressure in the gas path.

[0030] The pressure sensing component is configured to monitor the gas pressure within a closed gas circuit consisting of a gas supply assembly, a circuit closure assembly, and a liquid path to be measured. The pressure sensing component includes a pressure sensor 300, which is fixed to a sensing connector 204 and connected to a gas input connector 201. The pressure sensor 300 is a strain gauge type, capable of accurately monitoring minute pressure changes in the gas path. The pressure sensor 300 is equipped with a digital display screen for easy and intuitive reading of pressure values ​​by the operator.

[0031] During use, first connect the gas supply device to the gas inlet of the valve assembly 100, and connect the gas outlet of the valve assembly 100 to the gas input connector 201 of the test substrate 200 via the flexible conduit 400. Then, connect the water inlet detection connector 202 to the water inlet of the liquid path to be tested, and seal the water outlet connector 203 to the water outlet of the liquid path to be tested, forming a closed gas circuit.

[0032] When valve assembly 100 is opened, the gas supply device fills the closed gas circuit with gas. When the gas pressure reaches the preset value, valve assembly 100 is closed. Pressure sensor 300 begins monitoring the gas pressure changes in the closed gas circuit. If there is a leak in the liquid circuit under test, the gas pressure will gradually decrease over time; if the liquid circuit under test is airtight, the gas pressure will remain stable.

[0033] By observing the air pressure value displayed by pressure sensor 300 and its changing trend, it can be determined whether the air tightness of the liquid circuit under test is qualified. Generally, if the air pressure drop does not exceed 0.01MPa within 5 minutes, the air tightness of the liquid circuit under test is considered qualified; if the air pressure drop exceeds this value, it indicates that there is a leak in the liquid circuit under test, and further inspection and repair are required.

[0034] The pipeline airtightness testing device in this embodiment has a simple structure and is easy to operate. It can quickly and accurately detect the airtightness of various liquid pipelines and is suitable for pipeline airtightness testing.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A pipe airtightness testing device, characterized in that, include: Gas supply control component, configured to connect to gas supply device; The closed-loop component is equipped with a gas inlet, a water inlet connection, and a water outlet connection; The pressure sensing component is configured to monitor the gas pressure in a closed gas circuit consisting of the gas supply component, the circuit closure component, and the liquid path to be measured. in: The output end of the gas supply control component is connected to the gas input section; The water inlet connection is adapted to connect to the water inlet of the liquid path to be tested; The water outlet connection is sealed to the water outlet of the liquid path to be tested.

2. The pipeline airtightness testing device according to claim 1, characterized in that, The gas supply control component includes a valve assembly, the gas inlet end of which is connected to the gas supply device, and the gas outlet end of which constitutes the output end.

3. The pipeline airtightness testing device according to claim 2, characterized in that, The valve assembly includes a ball valve and a solenoid valve.

4. The pipeline airtightness testing device according to claim 1, characterized in that, The circuit closure component includes a test substrate on which the following is integrated: A gas input connector constitutes the gas input section; The water inlet detection connector constitutes the water inlet connection part; The water outlet sealing joint constitutes the water outlet connection part.

5. The pipeline airtightness testing device according to claim 4, characterized in that, The pressure sensing component includes a pressure sensor, the test substrate is provided with a sensing connector, and the pressure sensor is fixed to the sensing connector and connected to the gas input connector.

6. The pipeline airtightness testing device according to claim 4, characterized in that, The test substrate contains: The input detection channel connects the gas input connector and the water inlet detection connector. The circuit is closed, and the water outlet is connected to a closed joint.

7. The pipeline airtightness testing device according to claim 5, characterized in that, The test substrate also includes: The sensing pressure channel connects the input detection channel and the sensing connector.

8. The pipeline airtightness testing device according to claim 2, characterized in that, The outlet end of the valve assembly is connected to the gas inlet end via a flexible conduit.

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