CN217426807U

CN217426807U - Testing device

Info

Publication number: CN217426807U
Application number: CN202221291688.XU
Authority: CN
Inventors: 刘云梅; 王雪娥; 王栋; 宋宗晏; 方贝
Original assignee: Spic Hydrogen Energy Technology Development Co Ltd
Current assignee: Spic Hydrogen Energy Technology Development Co Ltd
Priority date: 2022-05-20
Filing date: 2022-05-20
Publication date: 2022-09-13
Anticipated expiration: 2032-05-20

Abstract

The utility model provides a testing device, include: a body; the first test loop is arranged on the machine body, and a cavity of the first test loop is used for circulating airflow; the air filter, the air compressor, the intercooler, the backpressure valve and the silencer are sequentially arranged on the first test loop along the flowing direction of the airflow, and the air filter, the air compressor, the intercooler, the backpressure valve and the silencer are respectively tested through the first test loop; the second test loop is arranged on the machine body, located on the side of the first test loop and used for circulating the first cooling medium, and the second test loop is used for installing the air compressor controller so as to test the air compressor controller through the second test loop. The utility model provides a testing arrangement among the prior art can't carry out capability test's problem respectively to each part in the air current circulation circuit.

Description

Testing device

Technical Field

The utility model relates to a fuel cell air way part test technical field particularly, relates to a testing arrangement.

Background

When the fuel cell stack is used for electrochemical reaction, the inlet air of the stack, the reaction pressure and the reaction flow of hydrogen and the flow and the pressure of a coolant need to be strictly controlled, and according to the nernst equation, when the pressure and the concentration of reactants of the fuel cell stack are increased, the reversible voltage and the output voltage of the stack reaction are favorably improved.

In the prior art, different devices are often required to be separately arranged for performing performance tests on the components, so that time is wasted, test cost is increased, and efficiency of performing the performance tests on the components is reduced.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a testing apparatus for testing the performance of each component in an air flow circuit of a test apparatus in the prior art.

In order to achieve the above object, the utility model provides a testing device, include: a body; the first test loop is arranged on the machine body, and a cavity of the first test loop is used for circulating airflow; the air filter, the air compressor, the intercooler, the backpressure valve and the silencer are sequentially arranged on the first test loop along the flowing direction of the airflow, and the air filter, the air compressor, the intercooler, the backpressure valve and the silencer are respectively tested through the first test loop; the second test loop is arranged on the machine body, located on the side of the first test loop and used for circulating the first cooling medium, and the second test loop is used for installing the air compressor controller so as to test the air compressor controller through the second test loop.

Further, the test device further comprises: a first flow meter; and the first flowmeter and the second flowmeter are sequentially arranged on the first test loop along the circulation direction of air and are positioned between the air filter and the air compressor.

Further, the test device further comprises: a first pressure sensor disposed on the first test circuit, the first pressure sensor being located between the air filter and the first flow meter.

Further, the test device further comprises: a second pressure sensor; the first temperature sensor, the second pressure sensor and the first temperature sensor are sequentially arranged on the first testing loop along the circulation direction of air flow in the first testing loop, and the second pressure sensor and the first temperature sensor are located between the second flowmeter and the air compressor.

Further, the test device further comprises: a third pressure sensor; and the third pressure sensor and the second temperature sensor are positioned between the air compressor and the intercooler.

Further, the test device further comprises: a fourth pressure sensor; and the fourth pressure sensor and the third temperature sensor are positioned between the intercooler and the backpressure valve.

Further, the test device further comprises: and a ninth pressure sensor disposed on the first test circuit, the ninth pressure sensor being located between the backpressure valve and the muffler.

Further, the test apparatus further comprises: the third flowmeter is arranged on the second test loop and is positioned at the outlet end of the first cooling medium of the air compressor controller; a fifth pressure sensor; and the fourth temperature sensor, the fifth pressure sensor and the fourth temperature sensor are sequentially arranged on the second test loop along the flowing direction of the first cooling medium, and the fourth temperature sensor is positioned at the inlet end of the first cooling medium of the air compressor controller.

Further, the test device further comprises: a sixth pressure sensor; and the sixth pressure sensor and the fifth temperature sensor are positioned between the air compressor controller and the third flow meter.

Further, the test device further comprises: and the cooling loop is arranged on the machine body and communicated with the intercooler, and a second cooling medium is used for circulating in the cooling loop so as to cool the intercooler.

Further, the test device further comprises: a seventh pressure sensor; and the sixth temperature sensor, the sixth temperature sensor and the seventh pressure sensor are sequentially arranged on the cooling circuit along the circulation direction of the second cooling medium, and the sixth temperature sensor and the seventh pressure sensor are positioned on the inlet side of the second cooling medium of the intercooler.

Further, the test device further comprises: an eighth pressure sensor; and the eighth pressure sensor and the seventh temperature sensor are positioned on the outlet side of the second cooling medium of the intercooler.

Further, the test device further comprises: the second pressure regulating valve is arranged on the cooling circuit and communicated with the cooling circuit; and the fourth flowmeter is arranged on the cooling circuit and communicated with the cooling circuit, and the fourth flowmeter is positioned on the second cooling medium outlet side of the intercooler.

By applying the technical scheme of the utility model, the testing device comprises a machine body, a first testing loop and a second testing loop which are arranged on the machine body, wherein the cavity of the first testing loop is used for circulating air flow; the air filter, the air compressor, the intercooler, the backpressure valve and the silencer are sequentially arranged on the first test loop along the flowing direction of the airflow, and the air filter, the air compressor, the intercooler, the backpressure valve and the silencer are respectively tested through the first test loop; the second test loop is located the side of first test loop and is used for circulating first coolant, and the second test loop is used for installing the air compressor machine controller to test the air compressor machine controller through the second test loop. Through setting up a organism like this, can test different spare parts respectively, need not to set up different test equipment respectively alone to every spare part, integrate first test return circuit and second test return circuit, improved testing arrangement's commonality.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the scope of the invention. In the drawings:

fig. 1 shows a schematic structural diagram of an embodiment of a testing device according to the present invention.

Wherein the figures include the following reference numerals:

100. a first test loop; 101. an air filter; 102. an air compressor; 103. an intercooler; 104. a back pressure valve; 105. a muffler; 11. a first pressure sensor; 12. a second pressure sensor; 13. a third pressure sensor; 14. a fourth pressure sensor; 15. a fifth pressure sensor; 16. a sixth pressure sensor; 17. a seventh pressure sensor; 18. an eighth pressure sensor; 19. a ninth pressure sensor;

200. a second test loop; 201. an air compressor controller; 21. a first temperature sensor; 22. a second temperature sensor; 23. a third temperature sensor; 24. a fourth temperature sensor; 25. a fifth temperature sensor; 26. a sixth temperature sensor; 27. a seventh temperature sensor; 202. a first pressure regulating valve; 203. a first drain valve; 204. a first heat sink; 205. a first water pump;

3. a first flow meter; 4. a second flow meter; 5. a third flow meter; 300. a cooling circuit; 302. a fourth flow meter; 303. a second pressure regulating valve; 304. a second drain valve; 305. a second heat sink; 306. and a second water pump.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1, the present invention provides a testing apparatus, including: a body; the first test circuit 100 is arranged on the machine body, and a cavity of the first test circuit 100 is used for circulating air flow; along the flowing direction of the airflow, an air filter 101, an air compressor 102, an intercooler 103, a back pressure valve 104 and a silencer 105 are sequentially arranged on the first test loop 100, and the air filter 101, the air compressor 102, the intercooler 103, the back pressure valve 104 and the silencer 105 are respectively tested through the first test loop 100; and the second test circuit 200 is arranged on the machine body and positioned on the side of the first test circuit 100 and used for circulating the first cooling medium, and the second test circuit 200 is used for installing the air compressor controller 201 so as to test the air compressor controller 201 through the second test circuit 200.

According to the utility model provides a testing device, including the organism and setting up first test loop 100 and second test loop 200 on the organism, the cavity of first test loop 100 is used for circulating the air current; along the flowing direction of the airflow, an air filter 101, an air compressor 102, an intercooler 103, a back pressure valve 104 and a silencer 105 are sequentially arranged on the first test loop 100, and the air filter 101, the air compressor 102, the intercooler 103, the back pressure valve 104 and the silencer 105 are respectively tested through the first test loop 100; the second test circuit 200 is located at a side of the first test circuit 100 for circulating the first cooling medium, and the second test circuit 200 is used for installing the air compressor controller 201, so as to test the air compressor controller 201 through the second test circuit 200. By arranging the machine body, different parts can be tested respectively, different testing devices do not need to be arranged on each part separately, the first testing loop 100 and the second testing loop 200 are integrated, and the universality of the testing device is improved.

Specifically, the test apparatus further includes: a first flow meter 3; the second flow meter 4, the first flow meter 3 and the second flow meter 4 are sequentially arranged on the first test circuit 100 along the circulation direction of air, and the first flow meter 3 and the second flow meter 4 are positioned between the air filter 101 and the air compressor 102. In the testing process, the first flowmeter 3 is calibrated, and the second flowmeter 4 is adjusted in the testing process by taking the first flowmeter 3 as a reference.

Further, the test device further comprises: and a first pressure sensor 11 disposed on the first test circuit 100, the first pressure sensor 11 being located between the air filter 101 and the first flow meter 3. The pressure of the air filter 101 is monitored by the first pressure sensor 11.

Wherein, testing arrangement still includes: a second pressure sensor 12; the first temperature sensor 21, the second pressure sensor 12 and the first temperature sensor 21 are sequentially arranged on the first test circuit 100 along the circulation direction of the air flow in the first test circuit 100, and the second pressure sensor 12 and the first temperature sensor 21 are located between the second flowmeter 4 and the air compressor 102. The pressure and temperature at the inlet of the air compressor 102 are monitored by the second pressure sensor 12 and the first temperature sensor 21, respectively.

Further, the test apparatus further comprises: a third pressure sensor 13; the second temperature sensor 22, the third pressure sensor 13 and the second temperature sensor 22 are sequentially arranged on the first test circuit 100 along the circulation direction of air, and the third pressure sensor 13 and the second temperature sensor 22 are positioned between the air compressor 102 and the intercooler 103. The air pressure outlet pressure and temperature are monitored by a third pressure sensor 13 and a second temperature sensor 22, respectively.

Further, the test device further comprises: a fourth pressure sensor 14; the third temperature sensor 23, the fourth pressure sensor 14 and the third temperature sensor 23 are sequentially disposed on the first test circuit 100 in the circulating direction of the air flow in the first test circuit 100, and the fourth pressure sensor 14 and the third temperature sensor 23 are located between the intercooler 103 and the back pressure valve 104. The outlet pressure and temperature of the intercooler 103 are monitored by the fourth pressure sensor 14 and the third temperature sensor 23, respectively.

The test device further comprises: and a ninth pressure sensor 19 provided on the first test circuit 100, the ninth pressure sensor 19 being located between the back pressure valve 104 and the muffler 105. The outlet pressure of back pressure valve 104 is monitored with ninth pressure sensor 19.

In the embodiment provided by the utility model, testing arrangement still includes: a third flowmeter 5 disposed on the second test loop 200 and located at the outlet end of the first cooling medium of the air compressor controller 201; a fifth pressure sensor 15; a fourth temperature sensor 24, a fifth pressure sensor 15, and a fourth temperature sensor 24 are sequentially provided on the second test circuit 200 in the flow direction of the first cooling medium, and the fourth temperature sensor 24 is located at the inlet end of the first cooling medium of the air compressor controller 201. The pressure and temperature at the inlet of the air compressor controller 201 are monitored by the fifth pressure sensor 15 and the fourth temperature sensor 24, respectively. Wherein a first water pump 205 is provided on the inlet side of the air compressor controller 201, and a fifth pressure sensor 15 and a fourth temperature sensor 24 are provided between the first water pump 205 and the air compressor controller 201.

Further, the test device further comprises: a sixth pressure sensor 16; a fifth temperature sensor 25, a sixth pressure sensor 16, and a fifth temperature sensor 25 are provided in the second test circuit 200 in this order in the flow direction of the first cooling medium, and the sixth pressure sensor 16 and the fifth temperature sensor 25 are located between the air compressor controller 201 and the third flow meter 5. A first radiator 204 is provided on the outlet side of the third flow meter 5, and a first pressure regulating valve 202 is provided on the first cooling medium outlet side of the first radiator 204 and the first cooling medium inlet side of the first water pump 205. Preferably, the second test circuit 200 is provided with a first drain branch, and the first drain branch is provided with a first drain valve 203.

In the embodiment provided by the utility model, testing arrangement still includes: and a cooling circuit 300 disposed on the machine body and communicated with the intercooler 103, wherein a second cooling medium is circulated in the cooling circuit 300 to cool the intercooler 103.

Further, the test device further comprises: a seventh pressure sensor 17; the sixth temperature sensor 26, and the seventh pressure sensor 17 are provided in the cooling circuit 300 in this order in the flow direction of the second cooling medium, and the sixth temperature sensor 26 and the seventh pressure sensor 17 are located on the second cooling medium inlet side of the intercooler 103. The pressure and temperature on the inlet side of the intercooler 103 are monitored by the seventh pressure sensor 17 and the sixth temperature sensor 26, respectively.

The test device further comprises: an eighth pressure sensor 18; the seventh temperature sensor 27, the eighth pressure sensor 18, and the seventh temperature sensor 27 are provided in the cooling circuit 300 in this order in the direction of circulation of the second cooling medium, and the eighth pressure sensor 18 and the seventh temperature sensor 27 are located on the second cooling medium outlet side of the intercooler 103. The pressure and temperature on the outlet side of the intercooler 103 are monitored with the eighth pressure sensor 18 and the seventh temperature sensor 27, respectively.

The test device further comprises: a second pressure regulating valve 303 provided on the cooling circuit 300 and communicating with the cooling circuit 300; and a fourth flow meter 302 provided on the cooling circuit 300 and communicating with the cooling circuit 300, the fourth flow meter 302 being located on the second cooling medium outlet side of the intercooler 103. The outlet side of the fourth flowmeter 302 is sequentially provided with a second water pump 306 and a second radiator 305, the cooling circuit 300 is provided with a second liquid discharge branch, and the second liquid discharge branch is provided with a second liquid discharge valve 304.

In the actual use process, when the flow resistance characteristic curve of the air filter is tested:

adjusting the rotating speed of the air compressor and the opening of the back pressure valve to enable the air compressor to work in an allowed interval, enabling the air compressor to run for a period of time to ensure that the air compressor runs stably, then reading the reading of the air flow meter and the reading of the first pressure sensor 11, wherein the pressure difference of the first pressure sensor 11 at the atmospheric pressure is the flow resistance of the air filter at the current flow, adjusting the rotation speed of the air compressor and the opening of the back pressure valve 104 to enable the reading of the air flow meter to be from small to large until the nominal flow of the air filter 101 is covered, and recording the flow resistance data at the corresponding flow to test the flow resistance characteristic curve of the air filter.

When the performance of the air compressor is tested:

opening the first water pump 205, the first radiator 204, the second water pump 306 and the second radiator 305 to proper rotating speeds to meet the heat dissipation requirements of the air compressor 102 and the air compressor controller 201 and the intercooler 103, before opening the air compressor 102, adjusting the opening degree of the back pressure valve 104 to be fully opened, then setting the rotating speed of the air compressor 102 to be the lowest rotating speed, after waiting for the stable operation of the air compressor 102, reading and recording the pressure P2, the temperature T1 and the flow rate of the inlet of the air compressor 102, the pressure P3 and the temperature T2 of the outlet of the air compressor 102, after the recording is finished, gradually adjusting the opening degree of the back pressure valve 104, repeating the operations until when the opening degree of the back pressure valve 104 is adjusted to be small, the outlet pressure P3 of the air compressor 102 rises, but the flow rate entering the air compressor 102 is greatly reduced, and when the air compressor 102 gives out abnormal sound, judging that the air compressor 102 has surged, recording the pressure P2, the temperature T1 and the flow rate of the inlet of the air compressor 102 at the moment, after the surge point is detected, the flow-pressure characteristic curve of the air compressor at the rotating speed is detected, the rotating speed of the air compressor can be increased, the characteristic curve of the air compressor at each rotating speed is detected according to the method, and therefore test data of the air compressor at different rotating speeds are obtained.

A data processing section: the ratio of the value of the air compressor outlet pressure P3 to the air compressor inlet pressure P2 is the pressure ratio of the air compressor, and the power consumption of the air compressor at each working point can be calculated according to the current and voltage fed back by the air compressor controller, so that MAP (MAP of flow-pressure ratio) and flow-power consumption MAP of the air compressor at different rotating speeds can be obtained.

When testing the flow resistance and the heat exchange capacity of the air compressor controller 201:

turning on the first water pump 205, the first radiator 204, the second water pump 306 and the second radiator 305 to appropriate rotation speeds to meet the heat dissipation requirements of the air compressor 102 and the air compressor controller 201 and the intercooler 103, adjusting the opening degree of the back pressure valve 104 to full opening before turning on the air compressor 102, then setting the rotation speed of the air compressor 102 to a target rotation speed, after the air compressor 102 operates stably for a predetermined time, and at the same time, after the readings of the fifth pressure sensor 15, the fourth temperature sensor 24, the sixth pressure sensor 16, the fifth temperature sensor 25 and the third flow meter 5 are stabilized, reading and recording the reading P5 of the fifth pressure sensor 15, the reading T4 of the fourth temperature sensor 24, the reading P6 of the sixth pressure sensor 16, the reading T5 of the fifth temperature sensor 25, then adjusting the rotation speed of the first water pump 205 and the opening degree of the first pressure regulating valve 202, repeating the above data until the reading of the third flow meter 5 reaches the maximum or minimum, test data of the air compressor controller 201 at different flow rates and temperatures are obtained.

A data processing section: the difference value between the P5 and the P6 is the flow resistance corresponding to the cooling flow of the air compressor controller under the reading of the corresponding third flowmeter 5; the flow resistance curves of the air compressor controller 201 at different flow rates are plotted to obtain the flow resistance data of the air compressor controller 201. When the air compressor operates stably and the readings of the T4, the T5 and the third flow meter 5 are stable, the heat exchange amount of the air compressor controller 201 at the moment can be calculated according to the temperature difference between the T4 and the T5, the flow data under the corresponding reading of the third flow meter 5 and the specific heat capacity of the used first cooling medium.

When testing the flow resistance and the heat exchange capacity of the intercooler 103:

turning on the first water pump 205, the first radiator 204, the second water pump 306 and the second radiator 305 to appropriate rotation speeds to meet the heat dissipation requirements of the air compressor 102 and the air compressor controller 201 and the intercooler 103, adjusting the opening degree of the back pressure valve 104 to be fully opened before turning on the air compressor 102, then setting the rotation speed of the air compressor 102 to a target rotation speed, operating the air compressor 102 stably after a predetermined time of operation, and reading the third pressure sensor 13, the second temperature sensor 22, the fourth pressure sensor 14, the third temperature sensor 23, the seventh pressure sensor 17, the sixth temperature sensor 26, the eighth pressure sensor 18, the seventh temperature sensor 27 and the fourth flow meter 302 stably, and then reading and recording the reading P3 of the third pressure sensor 13, the reading T2 of the second temperature sensor 22, the reading P4 of the fourth pressure sensor 14 and the reading T3 of the third temperature sensor 23, reading P7 of the seventh pressure sensor 17, reading T6 of the sixth temperature sensor 26, reading P8 of the eighth pressure sensor 18, reading T7 of the seventh temperature sensor 27 and reading of the fourth flow meter 302, then adjusting the rotating speed of the air compressor 102 and the opening degree of the back pressure valve 104 to enable the reading of the air flow meter to cover the maximum value and the minimum value, adjusting the rotating speed of the second water pump 306 and the opening degree of the second pressure regulating valve 303 at the same time until the reading of the fourth flow meter 302 reaches the maximum value or the minimum value, and recording data reaching stable after each adjustment, so that test data of the intercooler 103 under different flow rates and temperatures are obtained.

A data processing section: the difference between P3 and P4 is the flow resistance of the air path corresponding to the air flow of the intercooler 103 at the reading of the air flow meter, and the flow resistance of the intercooler air path corresponding to different flow rates is plotted, i.e. the flow resistance of the intercooler air path is obtained. The difference between P7 and P8 is the flow resistance of the cooling path corresponding to the cooling flow of the intercooler under the reading of the fourth flow meter 302, and the flow resistance of the cooling path of the intercooler corresponding to different flows is plotted, i.e. the flow resistance of the cooling path of the intercooler is obtained. According to the air flow of the air compressor at different working points (specific flow and specific pressure ratio), the difference value of T2 and T3 and the specific heat capacity of the air at the current atmospheric pressure and temperature, the heat exchange quantity of the air circuit of the intercooler at the current working point can be calculated. According to the difference value between T6 and T7 when the air compressor is at different working points (specific flow and specific pressure ratio), the reading of the fourth flowmeter 302 and the specific heat capacity of the coolant, the heat exchange quantity of the cooling circuit of the intercooler at the current working point can be calculated. According to the method, the heat exchange amount of the intercooler at different working condition points can be obtained.

When testing the heat exchange efficiency of the intercooler at different temperatures:

turning on the first water pump 205, the first radiator 204, the second water pump 306 and the second radiator 305 to appropriate rotation speeds to meet the heat dissipation requirements of the air compressor 102 and the air compressor controller 201 and the intercooler 103, adjusting the opening degree of the back pressure valve 104 to be fully opened before turning on the air compressor 102, then setting the rotation speed of the air compressor 102 to a target rotation speed, operating the air compressor 102 stably after a predetermined time of operation, and reading the third pressure sensor 13, the second temperature sensor 22, the fourth pressure sensor 14, the third temperature sensor 23, the seventh pressure sensor 17, the sixth temperature sensor 26, the eighth pressure sensor 18, the seventh temperature sensor 27 and the fourth flow meter 302 stably, and then reading and recording the reading P3 of the third pressure sensor 13, the reading T2 of the second temperature sensor 22, the reading P4 of the fourth pressure sensor 14 and the reading T3 of the third temperature sensor 23, reading P7 of the seventh pressure sensor 17, reading T6 of the sixth temperature sensor 26, reading P8 of the eighth pressure sensor 18, reading T7 of the seventh temperature sensor 27 and reading of the fourth flow meter 302, then increasing the temperature of the constant-temperature water tank in the cooling circuit and the rotating speed of the second water pump 306, and recording each data after each component is operated stably; the operation is repeated until the reading of the fourth flowmeter 302 reaches the maximum, but the heat dissipation requirement of the intercooler 103 is not met (namely the outlet temperature T3 of the intercooler 103 exceeds an allowable value), the rotating speeds of the throttle valve and the air compressor and the opening degree of the back pressure valve 104 are adjusted, the operation is repeated until the highest rotating speed and the highest pressure of the air compressor 102 are reached, and the heat exchange efficiency of the intercooler under different working conditions can be obtained through the method, so that whether the design of the intercooler meets the requirement or not can be evaluated.

When testing the minimum flow required by the intercooler when operating on a fuel cell system:

the first water pump 205, the first radiator 204, the second water pump 306 and the second radiator 305 are started to be at proper rotating speeds to meet the heat dissipation requirements of the air compressor 102, the air compressor controller 201 and the intercooler 103, after the rotating speed of the air compressor 102 and the angle of the backpressure valve 104 are adjusted to enable the airflow flow and the airflow pressure to reach the requirements of the operating point, whether the value of the air flow temperature T3 at the outlet of the intercooler 103 is less than 85 c or not, if so, indicating that the flow rate of the second cooling medium flowing through the intercooler 103 is sufficient, the second pressure regulating valve 303 is continuously closed or the rotation speed of the second water pump 306 is reduced, so that the flow rate flowing through the cooling path of the intercooler is reduced, and simultaneously observing whether the value of the air temperature T3 at the outlet of the intercooler is lower than 85 ℃, repeating the above steps until the temperature T3 is observed to be 85 ℃, the reading of the fourth flow meter 302 at this time is recorded, which is the minimum flow required by the intercooler at the current operating point. After the minimum flow required by the intercooler under all working condition points is measured according to the method, the minimum flow can be used as the cooling flow requirement of the intercooler of the cooling system of the fuel cell system, and the cooling design is simulated and corrected, so that the design of the cooling circuit meets the cooling requirement of the fuel cell system.

When the flow-reduction of the back pressure valve 104 at different angles is tested:

opening a first water pump 205, a first radiator 204, a second water pump 306 and a second radiator 305 to proper rotating speeds to meet the heat dissipation requirements of the air compressor 102, the air compressor controller 201 and the intercooler 103, setting the angle of a backpressure valve 104 to be the maximum value, setting the rotating speed of the air compressor 102 to be the minimum value, recording airflow flow, intercooler 103 outlet pressure P4 and backpressure valve 104 outlet pressure P9 after the air compressor is stabilized, wherein the difference value of P4 and P9 is the current opening degree of the backpressure valve, and the corresponding pressure drop is obtained when the airflow is indicated by a flow meter (the opening degree and the flow of the backpressure valve influence the indication number of flow resistance, and each flow resistance value has corresponding flow and backpressure valve opening degree); and increasing the rotating speed of the air compressor, recording corresponding data after the rotating speed of the air compressor is stabilized, finishing recording the data point of the maximum opening of the back pressure valve until the rotating speed of the air compressor reaches the maximum value, reducing the angle of the back pressure valve, setting the rotating speed of the air compressor as the minimum value, and repeating the steps to obtain the angle-flow-pressure drop diagram of the back pressure valve.

When testing the noise reduction effect of the silencer:

the first water pump 205, the first radiator 204, the second water pump 306 and the second radiator 305 are started to reach proper rotating speeds so as to meet the heat dissipation requirements of the air compressor 102, the air compressor controller 201 and the intercooler 103, background noise is recorded before an experiment, and in the experiment process, the background noise is ensured to be unchanged. During the experiment, the rotating speed of the air compressor and the opening degree of the back pressure valve are adjusted to enable the air flow and the pressure to reach the target values of the working condition points, and then the noise is detected and recorded at 3 fixed positions by using a calibrated noise meter; then the rotating speed of the air compressor and the opening degree of the backpressure valve are adjusted to meet the requirements of the working condition points, and then the steps are repeated, so that the noise condition of the silencer under different working condition points can be obtained. On the same machine body, the noise data measured in the same way can be compared with the noise reduction effect of different silencers.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A test apparatus, comprising:

a body;

a first test circuit (100) arranged on the machine body, a cavity of the first test circuit (100) being used for circulating an air flow;

the air filter (101), the air compressor (102), the intercooler (103), the back pressure valve (104) and the silencer (105) are sequentially arranged on the first test loop (100) along the flowing direction of the air flow, and the air filter (101), the air compressor (102), the intercooler (103), the back pressure valve (104) and the silencer (105) are respectively tested through the first test loop (100);

the second test loop (200) is arranged on the machine body and located on the side of the first test loop (100) and used for circulating a first cooling medium, and the second test loop (200) is used for installing an air compressor controller (201) so as to test the air compressor controller (201) through the second test loop (200).

2. The testing device of claim 1, further comprising:

a first flow meter (3);

and the first flowmeter (3) and the second flowmeter (4) are sequentially arranged on the first test circuit (100) along the circulation direction of air, and the first flowmeter (3) and the second flowmeter (4) are positioned between the air filter (101) and the air compressor (102).

3. The testing device of claim 2, further comprising:

a first pressure sensor (11) disposed on the first test circuit (100), the first pressure sensor (11) being located between the air filter (101) and the first flow meter (3).

4. The testing device of claim 2, further comprising:

a second pressure sensor (12);

the first temperature sensor (21), the second pressure sensor (12) and the first temperature sensor (21) set gradually on first test loop (100) along the circulation direction of the air current in first test loop (100), second pressure sensor (12) with first temperature sensor (21) are located second flowmeter (4) with between air compressor machine (102).

5. The testing device of claim 1, further comprising:

a third pressure sensor (13);

the second temperature sensor (22), the third pressure sensor (13) and the second temperature sensor (22) set gradually on first test circuit (100) along the circulation direction of air, third pressure sensor (13) and second temperature sensor (22) are located air compressor machine (102) with between intercooler (103).

6. The test device of claim 1, further comprising:

a fourth pressure sensor (14);

and the third temperature sensor (23), the fourth pressure sensor (14) and the third temperature sensor (23) are sequentially arranged on the first test circuit (100) along the circulation direction of the airflow in the first test circuit (100), and the fourth pressure sensor (14) and the third temperature sensor (23) are positioned between the intercooler (103) and the back pressure valve (104).

7. The testing device of claim 1, further comprising:

a ninth pressure sensor (19) provided on the first test circuit (100), the ninth pressure sensor (19) being located between the back pressure valve (104) and the muffler (105).

8. The testing device of claim 1, further comprising:

a third flow meter (5) arranged on the second test loop (200) and positioned at the outlet end of the first cooling medium of the air compressor controller (201);

a fifth pressure sensor (15);

and a fourth temperature sensor (24), wherein the fifth pressure sensor (15) and the fourth temperature sensor (24) are sequentially arranged on the second test circuit (200) along the flowing direction of the first cooling medium, and the fourth temperature sensor (24) is positioned at the inlet end of the first cooling medium of the air compressor controller (201).

9. The testing device of claim 8, further comprising:

a sixth pressure sensor (16);

a fifth temperature sensor (25), wherein the sixth pressure sensor (16) and the fifth temperature sensor (25) are sequentially arranged on the second test circuit (200) along the flow direction of the first cooling medium, and the sixth pressure sensor (16) and the fifth temperature sensor (25) are positioned between the air compressor controller (201) and the third flow meter (5).

10. The testing device of claim 1, further comprising:

and the cooling circuit (300) is arranged on the machine body and communicated with the intercooler (103), and a second cooling medium is circulated in the cooling circuit (300) so as to cool the intercooler (103).

11. The testing device of claim 10, further comprising:

a seventh pressure sensor (17);

a sixth temperature sensor (26), the sixth temperature sensor (26) and the seventh pressure sensor (17) being disposed in this order on the cooling circuit (300) in the direction of circulation of the second cooling medium, the sixth temperature sensor (26) and the seventh pressure sensor (17) being located on the second cooling medium inlet side of the intercooler (103).

12. The testing device of claim 10, further comprising:

an eighth pressure sensor (18);

a seventh temperature sensor (27), the eighth pressure sensor (18) and the seventh temperature sensor (27) being disposed in the cooling circuit (300) in this order along the direction of circulation of the second cooling medium, the eighth pressure sensor (18) and the seventh temperature sensor (27) being located on the second cooling medium outlet side of the intercooler (103).

13. The testing device of claim 10, further comprising:

a second pressure regulating valve (303) provided on the cooling circuit (300) and communicating with the cooling circuit (300);

a fourth flow meter (302) provided on the cooling circuit (300) and communicating with the cooling circuit (300), the fourth flow meter (302) being located on a second cooling medium outlet side of the intercooler (103).