A functional air compressor test system structure

Abstract

The utility model relates to a functionally complete air compressor test system structure, comprising an air storage heat exchange unit, a pressure regulating unit and a test room connected to each other; specifically comprising an air storage tank connected to an external compressed air source, one end of which is connected in series with a first shut-off valve, a check valve and a heat exchanger in sequence through a pipeline, an input port of the heat exchanger is connected to the pressure regulating unit, a cooling water outlet and a cooling water inlet are provided on the heat exchanger, a flow regulating valve is installed in the pipeline of the cooling water outlet, and a first thermal resistor is installed between the flow regulating valve and the check valve; also comprising a recovery three-way valve connected to the heat exchanger through a pipeline, one way of which is connected to a venting silencer, another way of which is connected in series with a recovery pressure regulating valve, a standard orifice plate and an air compressor to be tested, and another way of which is connected to the air storage tank through a pipeline, and a second pressure transmitter is installed on the pipeline; a third pressure transmitter, a humidity transmitter, a third thermal resistor and a power meter are installed in sequence in the test room, so that the test is convenient and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressor test systems, in particular to an air compressor test system structure with complete functions. Background Art

[0002] The working principle of an air compressor is to increase the movement speed of gas molecules so that the kinetic energy of gas molecules is converted into the pressure energy of the gas, thereby increasing the pressure of the compressed air.

[0003] The manufactured air compressor needs to undergo performance testing and pass the test before it can leave the factory. The test process is to start the air compressor, adjust the speed of the air compressor, the temperature and pressure of the compressed air produced to the design parameters, and then test the air production and power consumption of the air compressor to verify whether the performance of the air compressor reaches the design value. In the existing air compressor test system, the compressed air generated during the test has a pressure of more than 0.6MPa and a temperature of about 150℃, which is directly discharged into the atmosphere, causing energy waste, noise pollution and heat pollution. Utility Model Content

[0004] In view of the shortcomings in the above-mentioned existing production technology, the applicant provides a functional air compressor test system structure. Under the premise of ensuring normal testing functions, the original compressed air that is directly discharged is changed to organized recycling and utilization, and the compressed air with a pressure greater than 0.6MPa and a temperature of about 150°C is stored for use by enterprises as factory compressed air, thereby reducing the energy consumption of enterprises in manufacturing factory compressed air, and making effective use of the part of compressed air that is wasted by discharge, which not only improves the economic benefits of the enterprise, but also reduces noise pollution and heat pollution to the environment, thereby achieving the purpose of energy conservation and emission reduction.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A fully functional air compressor test system structure includes an air storage and heat exchange unit, a pressure regulating unit and a test room which are interconnected;

[0007] The system structure of the air storage heat exchange unit is as follows: it includes an air storage tank connected to an external compressed air source, one end of the air storage tank is connected in series with a first shut-off valve, a check valve and a heat exchanger through a pipeline, the input port of the heat exchanger is connected to a pressure regulating unit, a cooling water outlet and a cooling water inlet are provided on the heat exchanger, a flow regulating valve is installed on the pipeline of the cooling water outlet, and a first thermal resistor is installed between the flow regulating valve and the check valve;

[0008] The system structure of the pressure regulating unit is as follows: it includes a recovery three-way valve connected to the heat exchanger through a pipeline, one path of the recovery three-way valve is connected to the venting silencer, and the other path of the recovery three-way valve is connected in series with a recovery pressure regulating valve, a standard orifice plate and an air compressor to be tested in sequence, a first safety valve and a first pressure transmitter are installed on the pipeline between the standard orifice plate and the air compressor to be tested, an orifice plate inlet and outlet pressure differential transmitter is provided on the standard orifice plate, a venting pressure regulating valve is also installed at the outlet of the standard orifice plate through a pipeline, and the venting pressure regulating valve is connected to the venting silencer at the same time, and the recovery pressure regulating valve is connected to the first pressure transmitter through a branch pipeline; the recovery three-way valve is also connected to the gas storage tank through a pipeline, and a second pressure transmitter is installed on the pipeline;

[0009] The third pressure transmitter, humidity transmitter, third thermal resistor and power meter are installed in the test room in sequence.

[0010] As a further improvement of the above technical solution:

[0011] A second shut-off valve is installed on the pipeline between the air storage tank and the external compressed air source.

[0012] A second safety valve is installed on the top surface of the gas storage tank.

[0013] A drain valve is installed at the bottom of the gas storage tank.

[0014] A second thermal resistor is installed on the pipeline between the standard orifice plate and the venting pressure regulating valve.

[0015] The beneficial effects of the utility model are as follows:

[0016] The overall system of the utility model has a compact structure, complete functions, and convenient operation. It can selectively realize the recovery of compressed air above the specified pressure. When the compressed air produced by the air compressor is lower than the specified pressure, the compressed air produced is directly vented; when the compressed air produced by the air compressor is greater than or equal to the specified pressure, the compressed air produced is recovered through the air storage tank; by setting a recovery three-way valve, the recovered compressed air can be partially or completely vented after the pressure of the air storage tank is higher than the set value to prevent the air storage tank from overpressure; a heat exchanger is set at the inlet section of the air storage tank to reduce the temperature of the compressed air to the temperature required for the factory compressed air. The design of the utility model system fully meets the requirements of the performance test of the air compressor. Through the control system, the pressure, temperature, humidity, power and other measured values ​​during the test are read; the opening of the venting pressure regulating valve, the recovery pressure regulating valve, the recovery three-way valve, and the flow regulating valve are automatically controlled; the entire test process is fully automated; the recovery of compressed air is automatically realized during the test, and it has its own protection measures to prevent the recovered compressed air from overpressure. The utility model has no effect on the performance test of the air compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a system structure diagram of the utility model.

[0018] Figure 2 This is a partial system structure diagram of the utility model (I).

[0019] Figure 3 This is a partial system structure diagram (II) of the utility model.

[0020] Among them: 1. First safety valve; 2. Standard orifice plate; 3. Vent pressure regulating valve; 4. Recovery pressure regulating valve; 5. Recovery three-way valve; 6. Heat exchanger; 7. Check valve; 8. First shut-off valve; 9. Gas storage tank; 10. Second shut-off valve; 11. Second safety valve; 12. Drain valve; 13. Vent silencer; 14. First pressure transmitter; 15. Orifice inlet and outlet pressure differential transmitter; 16. Second thermal resistor; 17. Second pressure transmitter; 18. First thermal resistor; 19. Flow control valve; 20. Third pressure transmitter; 21. Humidity transmitter; 22. Third thermal resistor; 23. Power meter. DETAILED DESCRIPTION

[0021] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0022] like Figure 1-Figure 3 As shown, the fully functional air compressor test system structure of this embodiment includes an air storage and heat exchange unit, a pressure regulating unit and a test room connected to each other;

[0023] The system structure of the air storage heat exchange unit is as follows: it includes an air storage tank 9 connected to an external compressed air source, one end of the air storage tank 9 is connected in series with a first shut-off valve 8, a check valve 7 and a heat exchanger 6 through a pipeline, the input port of the heat exchanger 6 is connected to a pressure regulating unit, a cooling water outlet and a cooling water inlet are provided on the heat exchanger 6, a flow regulating valve 19 is installed in the pipeline of the cooling water outlet, and a first thermal resistor 18 is installed between the flow regulating valve 19 and the check valve 7;

[0024] The system structure of the pressure regulating unit is as follows: it includes a recovery three-way valve 5 connected to the heat exchanger 6 through a pipeline, one path of the recovery three-way valve 5 is connected to the venting silencer 13, and the other path of the recovery three-way valve 5 is connected in series with the recovery pressure regulating valve 4, the standard orifice plate 2 and the air compressor to be tested. The first safety valve 1 and the first pressure transmitter 14 are installed on the pipeline between the standard orifice plate 2 and the air compressor to be tested, and the standard orifice plate 2 is provided with an orifice inlet and outlet pressure differential transmitter 15. The outlet of the standard orifice plate 2 is also installed with a venting pressure regulating valve 3 through a pipeline, and the venting pressure regulating valve 3 is connected to the venting silencer 13 at the same time, and the recovery pressure regulating valve 4 is connected to the first pressure transmitter 14 through a branch pipeline; the recovery three-way valve 5 is also connected to the gas storage tank 9 through a pipeline, and a second pressure transmitter 17 is installed on the pipeline.

[0025] A third pressure transmitter 20, a humidity transmitter 21, a third thermal resistor 22 and a power meter 23 are sequentially installed in the test room.

[0026] A second shut-off valve 10 is installed on the pipeline between the air storage tank 9 and the external compressed air source.

[0027] A second safety valve 11 is installed on the top surface of the gas storage tank 9 .

[0028] A drain valve 12 is installed at the bottom of the gas storage tank 9.

[0029] A second thermal resistor 16 is installed on the pipeline between the standard orifice plate 2 and the venting pressure regulating valve 3 .

[0030] The specific structure and function of the air compressor test system with recyclable compressed air described in the utility model are as follows:

[0031] It mainly includes a standard orifice plate 2, a venting pressure regulating valve 3, a recovery pressure regulating valve 4, a recovery three-way valve 5, a heat exchanger 6, a gas storage tank 9, a venting silencer 13, a flow regulating valve 19, etc.

[0032] The outlet of the air compressor to be tested is connected to the inlet of the standard orifice plate 2 through a pipeline, and the first safety valve 1 and the first pressure transmitter 14 are arranged on the pipeline.

[0033] The standard orifice plate 2 is provided with an orifice plate inlet and outlet pressure differential transmitter 15 .

[0034] The outlet of the standard orifice plate 2 is connected to the inlet of the venting pressure regulating valve 3 through a pipeline, a second thermal resistor 16 is arranged on the pipeline section, and a bypass is arranged on the pipeline section, and the bypass is connected to the inlet of the recovery pressure regulating valve 4 through a pipeline.

[0035] The outlet of the venting pressure regulating valve 3 is connected to the inlet of the venting silencer 13 through a pipeline. At the same time, a bypass is provided in this section of the pipeline, and the bypass is connected to the outlet B of the recovery three-way valve 5 through a pipeline.

[0036] The outlet of the recovery pressure regulating valve 4 is connected to the inlet A of the recovery three-way valve 5 through a pipeline, the outlet C of the recovery three-way valve 5 is connected to the inlet of the heat exchanger 6 through a pipeline, and the outlet of the heat exchanger 6 is connected to the inlet of the gas storage tank 9 through a pipeline. A check valve 7, a first shut-off valve 8, and a first thermal resistor 18 are arranged on this section of the pipeline.

[0037] A flow regulating valve 19 is provided on the cooling water return pipe of the heat exchanger 6 .

[0038] The gas storage tank 9 is provided with a second safety valve 11 , a drain valve 12 , and a second pressure transmitter 17 .

[0039] The outlet of the gas storage tank 9 is connected to an external gas consumption point through a pipeline, and a second shut-off valve 10 is provided on the pipeline.

[0040] A third pressure transmitter 20, a humidity transmitter 21, a third thermal resistor 22, and a power meter 23 for measuring environmental conditions are arranged in the test room.

[0041] In actual working process:

[0042] A performance test was conducted on an air compressor with a designed exhaust pressure of 1.0 MPa, and compressed air with a pressure greater than or equal to 0.60 MPa was recovered during the test.

[0043] First, start the air compressor to be tested, set the air compressor speed to 50% of the rated speed, warm it up, set the first pressure transmitter 14 to 0.4MPa, set the recovery pressure regulating valve 4 to 0, and adjust the opening of the vent pressure regulating valve 3 from 100% by PID until the measured value of the first pressure transmitter 14 reaches the set value. When the measured value of the exhaust temperature second thermal resistor 16 increases to 120°C, the compressed air generated during this period is discharged to the atmosphere through the vent silencer 13.

[0044] Then the air compressor speed is increased to the rated speed, and the first pressure transmitter 14 is set to 1.0MPa. In the process of increasing the pressure, when the measured value of the first pressure transmitter 14 is less than 0.6MPa, the exhaust pressure of the air compressor is adjusted through the venting pressure regulating valve 3, and the compressed air is discharged to the atmosphere through the venting silencer 13. When the measured value of the first pressure transmitter 14 is greater than or equal to 0.6MPa, the opening of the recovery pressure regulating valve 4 is set to 100%, the opening of the venting pressure regulating valve 3 is set to 0, and the recovery pressure regulating valve 4 is PID-regulated from the opening of 100% until the measured value of the first pressure transmitter 14 reaches 1.0MPa. The opening of the recovery three-way valve 5 is set to 0, and the recovery three-way valve 5 is fully open from the pipe port A to the pipe port C. The compressed air is cooled by the heat exchanger, and the valve opening of the flow regulating valve 19 is PID-regulated until the measured value of the first thermal resistor 18 reaches 60°C; the compressed air is sent to the air storage tank 9 for use as compressed air for production. A second pressure transmitter 17 is provided on the gas storage tank 9. When the measured value of the second pressure transmitter 17 is greater than or equal to 0.9 MPa, the recovery three-way valve 5 starts PID adjustment from the opening degree of 0 until the measured value of the second pressure transmitter 17 reaches 0.9 MPa. The compressed air discharged from the pipe port B of the recovery three-way valve 5 is discharged to the atmosphere through the venting silencer 13.

[0045] Finally, when the exhaust pressure of the air compressor reaches the rated value and the exhaust temperature reaches the rated value, the flow rate is measured and calculated. The measured value of the first pressure transmitter 14 reaches 1.0MPa, and the measured value of the second thermal resistor 16 reaches 150°C. The control system automatically records the measured values ​​of the first pressure transmitter 14, the orifice plate inlet and outlet pressure differential transmitter 15, the second thermal resistor 16, the third pressure transmitter 20, the humidity transmitter 21, the third thermal resistor 22, and the power meter 23. These measurements are used to calculate the flow rate of compressed air and ultimately determine whether the performance and energy consumption of the unit meet the standards.

[0046] The utility model is provided with two-way compressed air pressure regulating valves for switching between venting and recycling during the compressed air measurement process.

[0047] The utility model is provided with a recovery pressure regulating valve 4 to ensure that the pressure in the gas storage tank after recovery will not be over-pressured, and the gas storage tank is automatically switched to be filled with gas or emptied according to the pressure of the gas storage tank 9.

[0048] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. A fully functional air compressor test system structure, characterized by: It includes a gas storage and heat exchange unit, a pressure regulating unit and a test room which are interconnected; The system structure of the air storage heat exchange unit is as follows: it includes an air storage tank (9) connected to an external compressed air source, one end of the air storage tank (9) is connected in series with a first shut-off valve (8), a check valve (7) and a heat exchanger (6) through a pipeline, the input port of the heat exchanger (6) is connected to a pressure regulating unit, the heat exchanger (6) is provided with a cooling water outlet and a cooling water inlet, a flow regulating valve (19) is installed in the pipeline of the cooling water outlet, and a first thermal resistor (18) is installed between the flow regulating valve (19) and the check valve (7); the system structure of the pressure regulating unit is as follows: it includes a recovery three-way valve (5) connected to the heat exchanger (6) through a pipeline, one path of the recovery three-way valve (5) is connected to the venting silencer (13), and the other path of the recovery three-way valve (5) is connected in series with a recovery pressure regulating valve (4), A standard orifice plate (2) and an air compressor to be tested are provided. A first safety valve (1) and a first pressure transmitter (14) are installed on the pipeline between the standard orifice plate (2) and the air compressor to be tested. An orifice plate inlet and outlet pressure differential transmitter (15) is provided on the standard orifice plate (2). A venting pressure regulating valve (3) is also installed at the outlet of the standard orifice plate (2) through a pipeline. The venting pressure regulating valve (3) is connected to a venting silencer (13). The recovery pressure regulating valve (4) is connected to the first pressure transmitter (14) through a branch pipeline. The recovery three-way valve (5) is also connected to an air storage tank (9) through a pipeline. A second pressure transmitter (17) is installed on the pipeline. A third pressure transmitter (20), a humidity transmitter (21), a third thermal resistor (22) and a power meter (23) are installed in sequence in the test room.

2. A fully functional air compressor test system structure as claimed in claim 1, characterized in that: A second shut-off valve (10) is installed on the pipeline between the air storage tank (9) and the external compressed air source.

3. A fully functional air compressor test system structure as claimed in claim 1, characterized in that: A second safety valve (11) is installed on the top surface of the gas storage tank (9).

4. A fully functional air compressor test system structure as claimed in claim 1, characterized in that: A drain valve (12) is installed at the bottom of the gas storage tank (9).

5. A fully functional air compressor test system structure as claimed in claim 1, characterized in that: A second thermal resistor (16) is installed on the pipeline between the standard orifice plate (2) and the venting pressure regulating valve (3).

Images