CN106680128B - A thermal shock test system for detecting the life of air intercooler - Google Patents

Abstract

The invention relates to a cold and hot impact testing system for detecting the service life of an air intercooler, which comprises an air compressor, wherein the air compressor is connected with an inlet of an air storage tank, an outlet of the air storage tank is connected with an inlet of a test piece through a high-temperature loop, a low-temperature loop and a heat storage bypass for circularly supplying heat to the interior of a heat storage water tank are also connected in parallel on the high-temperature loop, a fan is also arranged on the high-temperature loop, and an outlet of the test piece is also connected with a heat exchanger through a test pipeline. The invention has simple structure and convenient use, only one air compressor is needed to provide a high-pressure air source, the number of the test samples is not limited by even numbers, the input cost of the air compressor, the pipeline, the valve and other parts is saved, the heat energy recovery is realized by arranging the Roots blower and the heat storage water tank in the high-temperature loop, and meanwhile, the energy consumption in the test process can be saved by the preheating water tank, thereby being beneficial to energy conservation and emission reduction. The invention reduces the number of devices, reduces the failure rate of the whole test system and is convenient to maintain.

Description

A cold and heat shock test system for testing the life of air intercooler

technical field

The invention relates to the field of test equipment, in particular to a thermal shock test system for detecting the fatigue life of an air intercooler under the impact of thermal alternating stress.

Background technique

At present, the existing test systems for testing the fatigue life of air intercoolers under alternating thermal stress all need to be equipped with two sets of high-cost air compressors to provide high-pressure air sources, and two sets of high-temperature and low-temperature air compressors are respectively configured in the systems. loops, and it requires an even number of test samples to be evenly distributed among the high or low temperature loops. The above test system needs to be equipped with two sets of test equipment. The increase of air compressors, pipelines, auxiliary valves and other components in each test equipment will increase the cost of equipment investment, and the increase in the number of equipment will reduce the stability of the system. Increased chance of equipment failure. In addition, the number of test samples in the above test system is an even number, which is not conducive to saving energy consumption.

Contents of the invention

In view of the above existing problems, the applicant has carried out research and improvement, and provides a thermal shock test system for detecting the service life of the intercooler in the air,

The technical scheme adopted in the present invention is as follows:

A cold and heat shock test system for testing the life of an air intercooler, including an air compressor, the air compressor is connected to the inlet of an air storage tank through a pneumatic triple piece, and the outlet of the air storage tank passes through a first The test pipeline is connected to the first passage of the first air-operated three-way ball valve, and the second passage of the first air-operated three-way ball valve is connected to the first passage of the second air-operated three-way ball valve through the second test pipeline, An extension pipeline extending into the inside of the heat storage tank is provided on the second test pipeline; the second channel of the second air-controlled three-way ball valve is connected to the fan through the pipeline, and the second air-controlled The third passage of the three-way ball valve is connected to the first passage of the third air-operated three-way ball valve through the third test pipeline and the heater, and the second passage of the third air-operated three-way ball valve passes through the fifth test pipeline and the test piece The inlet connection of the test piece, the outlet of the test piece is connected to the heat exchanger through the fourth test pipeline; the third channel of the first air-operated three-way ball valve is also connected to one end of the first branch pipeline, and the first branch pipeline The other end of the pipeline is connected to the fifth test pipeline, and the third channel of the third air-operated three-way ball valve is also connected to the second branch pipeline, and the second branch pipeline is also provided with an extension extending into the inside of the heat storage tank. pipeline.

Its further technical scheme is:

The fan, the second air-operated three-way ball valve, the heater, the third test pipeline, the third air-operated three-way ball valve, and the second branch pipeline are connected to form a heating bypass for continuously providing heat energy for the heat storage tank;

The blower is a Roots blower;

The heat storage tank is also connected to the pool through a water valve and a pipeline, and a third temperature sensor is also connected to the heat storage tank;

A first throttling valve and a flow meter are respectively set on the first test pipeline, a first pressure sensor and a first temperature sensor are set on the fifth test pipeline, and a second temperature sensor and a second pressure sensor are set on the fourth test pipeline. sensor and second throttle valve;

A first muffler is also set outside the heat exchanger, and a second muffler is set outside the heat storage tank;

A pressure gauge and a safety valve are also arranged on the gas storage tank.

The beneficial effects of the present invention are as follows:

The invention is simple in structure and easy to use. It only needs to configure a set of air compressors to provide high-pressure air sources, and the number of test samples is not limited to an even number, which saves the input cost of air compressors, pipelines, valves and other components. , Heat energy recovery is achieved by installing a Roots fan and a hot water storage tank in the high temperature circuit. At the same time, the preheating hot water tank can also save energy consumption during the test process, which is beneficial to energy saving and emission reduction. The invention reduces the number of equipment, reduces the failure rate of the whole test system, and is convenient for maintenance.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Among them: 1. Pressure gauge; 2. Safety valve; 3. Gas storage tank; 4. The first throttle valve; 5. Flow meter; 6. The first air-controlled three-way ball valve; 7. The first branch pipeline; 8. The second air-controlled three-way ball valve; 9. Heater; 10. The third air-controlled three-way ball valve; 11. The first pressure sensor; 12. The first temperature sensor; 13. Test piece; 14. The second temperature sensor; 15 , the second pressure sensor; 16, the second throttle valve; 17, the first muffler; 18, the heat exchanger; 191, the first test pipeline; 192, the second test pipeline; 193, the third test pipeline ; 194, the fourth test pipeline; 195, the fifth test pipeline; 20, the fan; 21, the second branch pipeline; 22, the heat storage tank; 23, the second silencer; 24, the water valve; 25, the pool ; 26, pneumatic triple piece; 27, air compressor; 28, the third temperature sensor.

Detailed ways

Specific embodiments of the present invention will be described below.

As shown in Figure 1, a kind of thermal shock test system that is used to detect the service life of air intercooler comprises air compressor 27, and air compressor 27 is connected with the inlet of air storage tank 3 through pneumatic triple piece 26, and air storage tank 3 is provided with a pressure gauge 1 and a safety valve 2, and the outlet of the gas storage tank 3 is connected to the first channel of the first air-controlled three-way ball valve 6 through the first test pipeline 191, and the first channel of the first air-operated three-way ball valve 6 The two passages are connected with the first passage of the second air-controlled three-way ball valve 8 through the second test pipeline 192, and the second test pipeline 192 is provided with an extension pipeline stretching into the inside of the heat storage tank 22; The second channel of the air-operated three-way ball valve 8 is connected to the fan 20 through a pipeline, and the third channel of the second air-operated three-way ball valve 8 is connected to the third air-operated three-way ball valve through the third test pipeline 193 and the heater 9 10 The first channel, the second channel of the third air-controlled three-way ball valve 10 is connected to the inlet of the test piece 13 through the fifth test pipeline 195, and the outlet of the test piece 13 is connected to the heat exchanger 18 through the fourth test pipeline 194; The third passage of the first air-controlled three-way ball valve 6 is also connected to one end of the first branch pipeline 7, and the other end of the first branch pipeline 7 is connected to the fifth test pipeline 195, and at the third air-controlled three-way ball valve 10 The third channel is also connected to the second branch pipeline 21 , and the second branch pipeline 21 is also provided with an extension pipeline extending into the inside of the heat storage tank 22 . The fan 20, the second air-operated three-way ball valve 8, the heater 9, the third test pipeline 193, the third air-operated three-way ball valve 10, and the second branch pipeline 21 are connected to form a continuous supply for the heat storage tank 22. Heating bypass for thermal energy.

In the present invention, the blower 20 is a Roots blower. The heat storage tank 22 is also connected to the pool 25 through a water valve 24 and a pipeline, and a third temperature sensor 28 is also connected to the heat storage tank 22 . A first throttle valve 4 and a flow meter 5 are respectively arranged on the above-mentioned first test pipeline 191, a first pressure sensor 11 and a first temperature sensor 12 are arranged on the fifth test pipeline 195, and the fourth test pipeline 194 is provided with a second temperature sensor 14 , a second pressure sensor 15 and a second throttle valve 16 . A first muffler 17 is provided outside the heat exchanger 18 , and a second muffler 23 is provided outside the heat storage tank 22 .

Concrete work process of the present invention is as follows:

As shown in Figure 1, in the cold cycle process, the gas compressed by the air compressor 27 enters the gas storage tank 3 through the pneumatic triple piece 26 and the pipeline, and the gas pressure value in the gas storage tank 3 is observed by the pressure gauge 1, The gas flow rate is controlled by the first throttle valve 4, and the low-temperature gas is switched to the third channel by the first air-operated three-way ball valve 6, and enters the inside of the test piece 13 through the first branch pipeline 7 and the fifth test pipeline 195. The fourth test pipeline 194 is discharged to the external environment; when the cold cycle state is switched to the heat cycle state, the gas compressed by the air compressor 27 enters the gas storage tank 3 through the pneumatic triple piece 26 and the pipeline, in order to ensure that the low temperature gas can quickly When the temperature of the high-temperature gas required by the test piece 13 is reached, the inlet valve and exhaust valve of the heater 9 are opened, and at the same time the second air-controlled three-way ball valve 8 switches the second channel, the fan 20 works and the external air passes through the pipeline through the first The second air-controlled three-way ball valve 8 switches the third channel again and is heated by the third test pipeline 193 and the heater 9 to form high-temperature gas, and then the third air-controlled three-way ball valve 10 switches the third channel so that the gas enters the second branch pipeline 21 When the gas in the second branch pipeline 21 passes through the extended pipeline, the thermal energy in the high-temperature gas is absorbed and stored in the water tank by the hot water storage tank 22, thereby achieving the purpose of saving energy consumption. The gas that has absorbed heat energy is then discharged. As shown in Figure 1, when the low-temperature gas is switched to the second channel through the first air-operated three-way ball valve 6 and passes through the second test pipeline 192, the low-temperature gas passes through the extended section of the second test pipeline 192 through heat storage The water tank 22 is heated for the first time, and then the second air-operated three-way ball valve 8 and the third test pipeline 193 enter the heater 9 to heat for the second time, so that the gas is quickly heated to the specified temperature, and the temperature increase process stable, then the third air-operated three-way ball valve 10 switches the second channel and enters the test piece 13 through the fifth test pipeline 195, and is discharged to the external environment through the fourth test pipeline 194 after the test.

During the above-mentioned working process, the above-mentioned heating bypass keeps the heater 9 in the working state all the time. After research, it is found that once the heater 9 is turned off or needs to be restarted, it will cause the problem of poor time response, which will cause the test piece 13 to be in the test process. Among them, the waveform curve cannot meet the test requirements.

The above description is an explanation of the present invention, not a limitation of the invention. For the limited scope of the present invention, refer to the claims. The present invention can be modified in any form without departing from the basic structure of the present invention.

Claims (7)

1. A cold and thermal shock test system for detecting the life of an intercooler in the air, comprising an air compressor (27), the air compressor (27) passing through a pneumatic triple piece (26) and an air storage tank (3) The inlet is connected to the outlet of the gas storage tank (3) through the first test pipeline (191) and the first channel of the first air-controlled three-way ball valve (6), which is characterized in that: the first air-controlled The second passage of the three-way ball valve (6) is connected with the first passage of the second air-operated three-way ball valve (8) through the second test pipeline (192), and the second test pipeline (192) is provided with The extended pipeline extending into the inside of the heat storage tank (22); the second channel of the second air-controlled three-way ball valve (8) is connected with the fan (20) through the pipeline, and the second air-controlled three-way ball valve (8) The third passage of the ball valve (8) is connected to the first passage of the third air-controlled three-way ball valve (10) through the third test pipeline (193) and the heater (9), and the third air-controlled three-way ball valve (10) ) is connected to the inlet of the test piece (13) by the fifth test pipeline (195), and the outlet of the test piece (13) is connected to the heat exchanger (18) by the fourth test pipeline (194); The third passage of the first air-controlled three-way ball valve (6) is also connected to one end of the first branch pipeline (7), and the other end of the first branch pipeline (7) is connected to the fifth test pipeline (195 ), the third passage of the third air-controlled three-way ball valve (10) is also connected to the second branch pipeline (21), and the second branch pipeline (21) is also provided with a heat storage tank (22 ) internal extension piping. 2. A kind of thermal shock test system for detecting the service life of air intercooler as claimed in claim 1, characterized in that: the blower fan (20), the second air-controlled three-way ball valve (8), the heater (9), the third test pipeline (193), the third air-controlled three-way ball valve (10), and the second branch pipeline (21) are connected to form a heating bypass for continuously providing heat energy to the heat storage tank (22) . 3. A thermal shock test system for testing the life of an air intercooler according to claim 1, characterized in that: the blower (20) is a Roots blower. 4. A kind of thermal shock test system for detecting the service life of air intercooler as claimed in claim 1, characterized in that: the water valve (24), pipe The road is connected to the pool (25), and the third temperature sensor (28) is also connected to the heat storage tank (22). 5. A kind of thermal shock test system for detecting the service life of an air intercooler as claimed in claim 1, characterized in that: a first throttle valve (4) is respectively set on the first test pipeline (191) ) and flowmeter (5), the first pressure sensor (11) and the first temperature sensor (12) are set on the fifth test pipeline (195), and the second temperature sensor is set on the fourth test pipeline (194) (14), the second pressure sensor (15) and the second throttle valve (16). 6. A kind of thermal shock test system for detecting the service life of air intercooler as claimed in claim 1, characterized in that: a first muffler (17) is also arranged outside the heat exchanger (18) , a second muffler (23) is also provided outside the heat storage tank (22). 7. A kind of thermal shock test system for detecting the service life of air intercooler as claimed in claim 1, characterized in that: a pressure gauge (1) and a safety valve are also arranged on the air storage tank (3) (2).

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