CN101650250B - Hot water pressure test leak-detecting device of heat exchanger - Google Patents

Abstract

A hot water pressure test leak detection device for a heat exchanger. The cylinder of the pneumatic sealing system is connected to the tooling. One end of the cylinder is connected to a pneumatic piston rod. source; in the hot water system, a hot water pipe joint is connected to both sides of the piston pipe joint, and one end of the hot water pipe joint is connected to the hot water tank; the mouth of the other end is respectively connected with the first tubular elastic seal and the second Two tubular elastic seals. The pneumatic piston rod is set on the vertical bisector of the line connecting the centers of the nozzles of the two hot water pipes to ensure that the connecting parts of the piston pipe head are balanced in force and move forward and backward in parallel to achieve an ideal sealing effect. The invention has the advantages of simple structure, convenient operation, good effect of pressure test and leak detection, and high efficiency.

Description

A heat exchanger hot water pressure test leak detection device

technical field

The invention relates to a hot water pressure test leak detection device used in the manufacturing process of a heat exchanger. It can be used for hot water leak detection test of automobile air conditioner heat exchanger.

Background technique

The hot water leak test must be carried out before the heat exchanger leaves the factory to ensure the product quality of the heat exchanger and prevent leakage during actual use. However, at present, the leak detection method of heat exchanger manufacturers generally adopts manual detection, single and manual operation, and hot water with a certain pressure is input into the heat exchanger pipe for manual leak detection test. Due to the poor sealing conditions, the pressure during the pressure test The changes at any time make the test results inaccurate, not only the production efficiency is low, the cost is high, but also the product quality is difficult to guarantee, and the hot water leakage of the heat exchanger occurs from time to time. In order to adapt to the rapid development of the automobile manufacturing industry, there is an urgent need for a mechanized and standardized hot water pressure test and leak detection equipment for heat exchangers.

Contents of the invention

In order to overcome the above disadvantages, the invention discloses a hot water pressure test leak detection device for a heat exchanger. The device of the present invention is completely mechanized, and is performed according to leak detection requirements, which not only saves time and labor, but also has good airtightness between the pressure test leak detection device and the heat exchanger, and the pressure reaches the standard, so that the detection quality is greatly improved.

A hot water pressure test leak detection device for a heat exchanger, including a pneumatic sealing system and a hot water system, characterized in that:

1) The pneumatic sealing system: the cylinder is connected with the tooling, the cylinder is connected with a pneumatic piston rod, the pneumatic piston rod and the piston pipe head are connected by bolts, and the air source of the cylinder is provided by a compressed air source;

2) The hot water system described above: a hot water pipe joint is connected to both sides of the piston pipe head connector, one end of the hot water pipe joint is connected to the hot water tank, and the mouth of the other end is respectively connected to a first tubular elastic seal and a second tubular elastic seal.

The pneumatic piston rod is arranged on the perpendicular bisector of the line connecting the centers of the nozzles of the two hot water pipes, so as to ensure that the connecting parts of the piston pipe heads are balanced in force, advance and retreat in parallel, and achieve an ideal sealing effect.

The connection between the piston pipe head connector and the two hot water pipe joints is to open a hole on the piston pipe head connector, and the hot water pipe passes through the hole to realize the docking with the hot water interface.

During detection, the pneumatic piston rod is driven by the cylinder gas to drive the plug pipe head connector to advance in parallel, thereby driving the two hot water pipe joints to realize the docking with the hot water interface.

In the present invention, two layers of tubular elastic seals with better elasticity are used at the interface of the hot water pipe, so that the sealing performance of the interface connecting the water inlet of the heat exchanger under test and the hot water pipeline is greatly improved, thereby ensuring the entire testing process The pressure balance is stable and no fluid leakage occurs, which solves the problem of difficult connection between the heat exchanger and the test system, and greatly improves the test quality.

The invention has the advantages of simple structure, convenient operation, accurate pressure test and leak detection, and high production efficiency.

Description of drawings

Fig. 1 is the front view of the hot water pressure test leak detection device of the heat exchanger of the present invention;

Fig. 2 is a top view of the hot water pressure test and leak detection device for the heat exchanger of the present invention.

1. Heat exchanger under test, 2. First tubular elastic seal, 3. Second tubular elastic seal, 4. Bolt, 5. Pneumatic piston rod, 6. Hot water pipe joint, 7. Hot water interface, 8 . Pneumatic piston and pipe joint connection piece, 9. Tooling.

Detailed ways

A heat exchanger hot water pressure test leak detection device, including a pneumatic sealing system and a hot water system, as shown in Figure 1 and Figure 2. The pneumatic piston rod 5 of the pneumatic sealing system is connected with the tooling 9, the pneumatic piston rod and the piston pipe head connecting piece 8 are fixed through the bolt 4, and the air source of the cylinder is provided by the compressed air source; the pneumatic piston and the pipe joint connecting piece 8 are connected on both sides There is a hot water pipe joint 6, one end of the hot water pipe joint is connected with the hot water tank, and the first tubular elastic seal 2 and the second tubular elastic seal 3 are respectively connected at the nozzle of the other end. The pneumatic piston rod 5 is arranged on the vertical bisector of the connection between the centers of the nozzles of the two hot water pipe joints 6, so as to ensure the force balance of the pneumatic piston pipe head connector 8, advance and retreat in parallel, and achieve an ideal sealing effect.

After the preparatory work, the test begins: the pneumatic seal is activated first. The pneumatic solenoid valve is energized, the piston is driven by air pressure, and the pneumatic piston rod 5 is driven to automatically realize the connection between the first tubular elastic seal 2 and the second tubular elastic seal 3 at the end of the hot water pipe joint and the hot water interface 7 of the heat exchanger under test. Docking and sealing. At this time, the first tubular seal 2 is close to the hot water interface 7, and the second tubular seal 3 plays a role of strengthening the seal. After the pressure reaches the set value, the water system starts to work, and the hot water with a certain pressure , enter the heat exchanger pipeline through the hot water pipe joint 6, and start to leak check the heat exchanger. After the test work is completed, the pneumatic solenoid valve is de-energized, the cylinder moves, and the connection between the tested heat exchanger and the device of the present invention is automatically released. At this time, the tested heat exchanger can be taken out to enter the next test.

Claims (3)

1. a hot water pressure test leak-detecting device of heat exchanger comprises pneumostop system and hot-water heating system, it is characterized in that:

1) described pneumostop system: cylinder is connected with frock, is connected with pneumatic piston rod in the cylinder, and pneumatic piston rod and piston tube head connecting piece are affixed by bolt, and the cylinder source of the gas is provided by compressed air source;

2) described hot-water heating system: piston tube head connecting piece both sides respectively are connected with a pipe joint of hot water, and hot-water line one end is connected with boiler, and the mouth of pipe place of the other end is connected with the first tubulose elastic sealing element and the second tubulose elastic sealing element respectively.

2. a kind of hot water pressure test leak-detecting device of heat exchanger according to claim 1 is characterized in that: described pneumatic piston rod is arranged on the perpendicular bisector of two hot-water line mouth of pipe lines of centres.

3. a kind of hot water pressure test leak-detecting device of heat exchanger according to claim 1, it is characterized in that: described piston tube head connecting piece is connected with two pipe joint of hot water, be perforate on the piston tube head connecting piece, hot-water line passes this hole, and realization is docked with interface of hot water.

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