A test bench

Abstract

The application discloses a test bench, which comprises a filter, a solenoid valve, a pressure increasing valve, an exhaust valve, a pressure detector and a computer system, wherein the filter is used for filtering impurities and moisture in gas; the solenoid valve is arranged in a test pipeline and is used for controlling the opening and closing of the test pipeline; the pressure increasing valve is connected with the filter and the solenoid valve and is used for increasing the gas pressure entering the solenoid valve; the exhaust valve is connected with the test pipeline and is used for discharging gas in the test pipeline; the pressure detector is connected with the test pipeline and is used for detecting the gas pressure in the test pipeline; and the computer system is connected with the pressure detector, the solenoid valve and the exhaust valve and is used for controlling the opening and closing of the solenoid valve according to the pressure value detected by the pressure detector and controlling the opening and closing of the exhaust valve. The test bench can realize the automatic operation of the test pipeline cleaning and pressure maintaining test, thereby reducing the manual labor and improving the work efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipeline test, in particular to a test bench. BACKGROUND

[0002] As known, the brake system is an important system of the city car and the motor car, and relates to the running performance and the safety performance of the vehicle. The brake system test pipeline bears and transmits compressed air, and connects various components of the air brake system. If the brake system test pipeline is not cleaned and pressure maintained before the vehicle runs, the brake component failure or air leakage of the brake system during the vehicle running will cause air brake abnormality, affecting the driving safety. In the prior art, manual test is mainly used. Specifically, the valve is manually opened to supply the gas pump to deliver gas to the test pipeline for cleaning and pressure test. However, the manual test leads to complicated operation, large labor quantity, and low work efficiency. Therefore, it is necessary for the person skilled in the art to provide a test bench which is convenient to operate and has high work efficiency. SUMMARY

[0003] The purpose of the present application is to provide a test bench which can clean and pressure maintain the test pipeline, thereby reducing the labor quantity and improving the work efficiency.

[0004] To achieve the above purpose, the present application provides a test bench for cleaning and pressure maintaining the test pipeline, comprising:

[0005] A filter is connected with a gas source for supplying gas, and is used for filtering impurities and moisture in the gas;

[0006] An electromagnetic valve is arranged in the test pipeline, and is used for controlling the on-off of the test pipeline;

[0007] A pressure increasing valve is connected with the filter and the electromagnetic valve, and is used for increasing the gas pressure entering the electromagnetic valve;

[0008] An exhaust valve is connected with the test pipeline, and is used for exhausting the gas in the test pipeline to clean the test pipeline;

[0009] A pressure detector is connected with the test pipeline, and is used for detecting the gas pressure in the test pipeline;

[0010] A computer system is connected with the pressure detector, the electromagnetic valve and the exhaust valve, and is used for controlling the opening and closing of the electromagnetic valve according to the pressure value detected by the pressure detector, and is used for controlling the opening and closing of the exhaust valve.

[0011] In some embodiments, a one-way valve is further included, which is connected with the filter and the electromagnetic valve, and is used for adjusting the rising speed of the gas pressure.

[0012] In some embodiments, the computer system comprises:

[0013] The industrial computer is connected with the pressure detector, and is used for receiving the pressure value detected by the pressure detector and processing data thereof.

[0014] The control module is connected with the industrial computer, and is used for controlling the opening and closing of the electromagnetic valve according to the control instruction of the industrial computer.

[0015] In some embodiments, the industrial computer comprises:

[0016] The casing;

[0017] The display is arranged in the casing, and is used for displaying data and setting a pressure threshold value.

[0018] In some embodiments, the display is a touch display.

[0019] In some embodiments, the test bench further comprises a printing device connected with the computer system, and the printing device is used for printing a test report.

[0020] In some embodiments, the test bench further comprises a manual pressure regulating assembly connected with the test pipeline, and the manual pressure regulating assembly is used for pressure relief of the test pipeline.

[0021] In some embodiments, the test bench further comprises a filter pressure regulator connected with the filter, and the filter pressure regulator is used for filtering and regulating pressure of the gas entering the filter.

[0022] In some embodiments, the test bench further comprises a pressure regulating valve connected with the filter and the pressure increasing valve, and the pressure regulating valve is used for regulating pressure of the gas entering the pressure increasing valve.

[0023] In some embodiments, the test bench further comprises a stop valve connected with the air inlet of the filter pressure regulator.

[0024] With respect to the above background technology, the test bench provided by the embodiments of the present application is used for pipeline cleaning and pressure maintaining test, and comprises a filter, an electromagnetic valve, a pressure increasing valve, an exhaust valve, a pressure detector and a computer system, wherein the filter is connected with a gas source for providing test gas, and is used for filtering impurities and moisture in the gas; the electromagnetic valve is arranged in the test pipeline, and is used for controlling the opening and closing of the test pipeline; the pressure increasing valve is connected with the filter and the electromagnetic valve, and is used for increasing the pressure of the gas entering the electromagnetic valve; the exhaust valve is connected with the test pipeline, and is used for exhausting the gas in the test pipeline to clean the test pipeline; the pressure detector is connected with the test pipeline, and is used for detecting the pressure of the gas in the test pipeline; and the computer system is connected with the pressure detector, the electromagnetic valve and the exhaust valve, and is used for controlling the opening and closing of the electromagnetic valve according to the pressure value detected by the pressure detector, and simultaneously, the computer system is also used for controlling the opening and closing of the exhaust valve.

[0025] In this way, when the pipeline is cleaned, the electromagnetic valve is opened by the computer system control, the gas provided by the gas source enters the test bench and then is filtered by the filter and pressurized by the pressure increasing valve, and then enters the electromagnetic valve, and then the gas enters the test pipeline. After a period of gas supply or the gas pressure in the test pipeline reaches the preset value, the exhaust valve is opened by the computer system control, so that the test pipeline can be cleaned. When the pressure is maintained, the exhaust valve is closed and the electromagnetic valve is opened by the computer system control, the gas provided by the gas source enters the test bench and then is filtered by the filter and pressurized by the pressure increasing valve, and then enters the electromagnetic valve, and then the gas enters the test pipeline. The pressure of the gas in the test pipeline is detected by the pressure detector, and whether the pressure of the gas in the test pipeline changes is judged by the computer system. Compared with the traditional manual test, the test bench provided by the embodiment can realize the automatic operation of the test pipeline cleaning and pressure maintenance test, that is, the test pipeline cleaning and pressure maintenance test can be automatically performed, thereby reducing the labor intensity and improving the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0027] Figure 1 The logic control block diagram of the test bench in the embodiment of the present application;

[0028] Figure 2 The gas circuit diagram of the test bench during the test in the embodiment of the present application.

[0029] Among them:

[0030] 1-gas source, 2-shutoff valve, 3-filter pressure regulator, 4-filter, 5-pressure increasing valve, 6-one-way valve, 7-electromagnetic valve, 8-test pipeline, 9-exhaust valve, 10-pressure detector, 11-computer system, 1101-industrial computer, 1102-control module, 12-input power supply, 13-printing device, 14-manual pressure regulating assembly. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0032] In order to make the technical personnel in the technical field better understand the present application, the present application is further described in detail below with reference to the drawings and specific embodiments.

[0033] It should be noted that the "upper end, lower end, left side, right side" and other orientation words described below are defined based on the drawings of the specification.

[0034] Please refer to Figure 1 and Figure 2 , Figure 1 is the logical control block diagram of the test bench in the embodiment of the present application; Figure 2 is the gas circuit diagram when the test bench is tested in the embodiment of the present application.

[0035] The test bench provided by the embodiment of the present application is used for cleaning and pressure maintaining test of the test pipeline 8, and the test bench comprises a filter 4, an electromagnetic valve 7, a pressure increasing valve 5, an exhaust valve 9, a pressure detector 10 and a computer system 11, wherein the filter 4 is connected with a gas source 1 for providing test gas, the filter 4 is used for filtering impurities and moisture in the gas, the electromagnetic valve 7 is arranged on the test pipeline 8, the electromagnetic valve 7 is used for controlling the opening and closing of the test pipeline 8, the pressure increasing valve 5 is connected with the filter 4 and the electromagnetic valve 7, the pressure increasing valve 5 is used for increasing the gas pressure entering the electromagnetic valve 7, the exhaust valve 9 is connected with the test pipeline 8, the exhaust valve 9 is used for exhausting the gas in the test pipeline 8 to clean the test pipeline 8, the pressure detector 10 is connected with the test pipeline 8, the pressure detector 10 is used for detecting the gas pressure in the test pipeline 8, and the computer system 11 is connected with the pressure detector 10, the electromagnetic valve 7 and the exhaust valve 9, the computer system 11 is used for controlling the opening and closing of the electromagnetic valve 7 according to the pressure value detected by the pressure detector 10, and at the same time, the computer system 11 is also used for controlling the opening and closing of the exhaust valve 9.

[0036] In this way, when the pipeline is cleaned, the computer system 11 is controlled to open the electromagnetic valve 7, the gas provided by the gas source 1 enters the test bench and then successively passes through the filter 4 and the pressure increasing valve 5 to enter the electromagnetic valve 7, and then the gas enters the test pipeline 8, after a period of gas supply or when the gas pressure in the test pipeline 8 reaches a preset value, the computer system 11 is controlled to open the exhaust valve 9, so that the cleaning of the test pipeline 8 can be realized; when the pressure maintaining test is performed, the computer system 11 is controlled to close the exhaust valve 9 and open the electromagnetic valve 7, the gas provided by the gas source 1 enters the test bench and then successively passes through the filter 4 and the pressure increasing valve 5 to enter the electromagnetic valve 7, and then the gas enters the test pipeline 8, the pressure detector 10 detects the pressure of the gas in the test pipeline 8, and the computer system 11 judges whether the pressure of the gas in the test pipeline 8 changes, if not, the pressure maintaining performance of the test pipeline 8 is good.

[0037] Compared with the traditional manual test, the test bench provided by the embodiment of the application can realize the automatic operation of the test pipeline 8 cleaning and pressure maintaining test, that is, can automatically clean and maintain the pressure of the test pipeline 8, thereby reducing the labor intensity and improving the work efficiency.

[0038] In some embodiments, the test bench further comprises a one-way valve 6 connected with the filter 4 and the electromagnetic valve 7, and the one-way valve 6 is used to adjust the rising speed of the gas pressure.

[0039] That is, the one-way valve 6 is connected in parallel with the pressure booster valve 5, after the gas source 1 enters the test bench, the impurities and moisture in the air are first filtered out by the filter 4, and then pass through the one-way valve 6 and the pressure booster valve 5, the one-way valve 6 can make the rear-end pressure rise faster, and the pressure booster valve 5 can increase the pressure of the input gas passing through the pressure booster valve 5 to reach the required test air pressure, which can reach 1.0 MPa at most.

[0040] In some embodiments, the computer system 11 is connected with an input power supply 12 for supplying power to the computer system 11, and the computer system 11 comprises an industrial computer 1101 and a control module 1102, the industrial computer 1101 is connected with the pressure detector 10, and the industrial computer 1101 is used to receive the pressure value detected by the pressure detector 10 and process the data; the control module 1102 is connected with the industrial computer 1101, and the control module 1102 is used to control the opening and closing of the electromagnetic valve 7 according to the control instruction of the industrial computer 1101.

[0041] Of course, the above-mentioned control module 1102 can be a controller, such as a PLC; and the pressure detector 10 is a pressure sensor.

[0042] In this way, the pressure sensor detects the pressure value of the gas in the test pipeline 8 and transmits the pressure value to the industrial computer 1101, the industrial computer 1101 processes the data of the pressure value and judges whether the pressure value reaches the set threshold value, when the pressure value reaches the threshold value, the industrial computer 1101 transmits the control instruction to the control module 1102, so that the control module 1102 controls the electromagnetic valve 7 to be closed, thereby stopping the gas inlet.

[0043] It should be noted that the threshold value of the pressure can be set according to the actual needs and input into the industrial computer 1101.

[0044] In some embodiments, the industrial computer 1101 comprises a machine shell and a display, the display is arranged in the machine shell, and the display is used to display the data and set the pressure threshold value.

[0045] In some embodiments, the display is a touch display.

[0046] In this way, the pressure threshold value can be input through the display, and when the pressure value detected by the pressure sensor in the test pipeline 8 reaches the pressure threshold value, the electromagnetic valve 7 can be automatically closed.

[0047] In some embodiments, the test bench further comprises a printing device 13 connected to the computer system 11, and the printing device 13 is used for printing test reports.

[0048] It should be noted that the computer system 11 is compiled with special test software, and the test software automatically controls the entire test process, collects data, displays, stores and prints reports. After the test is completed, the system automatically stores the test data, and can print the test report through the printing device 13.

[0049] In some embodiments, the test bench further comprises a manual pressure regulating assembly 14, which comprises a connecting pipeline and a manual pressure regulating switch connected to the connecting pipeline. The connecting pipeline is connected to the test pipeline 8, and the manual pressure regulating switch is used to release pressure in the test pipeline 8, thereby ensuring that the gas pressure in the test pipeline 8 is maintained within a safe value range.

[0050] It can be understood that when the exhaust valve 9 cannot be fine-tuned, and there is no plug valve in the test pipeline 8 that can be fine-tuned, the exhaust is performed through the manual pressure regulating switch of the test bench to fine-tune the pressure until the working pressure is reached and the pressure holding operation is automatically performed.

[0051] In some embodiments, the test bench further comprises a filter pressure regulator 3 connected to the filter 4, and the filter pressure regulator 3 is used to filter and regulate the pressure of the gas entering the filter 4.

[0052] In this way, the gas is filtered and regulated by the filter pressure regulator 3 before entering the filter 4, and the purpose of limiting the pressure is achieved after being filtered and regulated by the filter pressure regulator 3, thereby preventing the pressure of the gas entering the filter 4 from being too high to affect the filtering effect.

[0053] In some embodiments, a pressure regulating valve can also be provided separately, which is connected with the filter 4 and the pressure booster 5, i.e. the pressure regulating valve is arranged between the filter 4 and the pressure booster 5, and is used to regulate the pressure of the gas entering the pressure booster 5. In this way, after the gas source 1 enters the test bench, the impurities and moisture in the gas are first filtered out by the filter 4, and then the purified gas passes through the pressure regulating valve, which can limit the pressure of the input gas passing through to be not greater than 0.6 MPa. The pressure regulating valve plays a pressure limiting and protection role. After the pressure regulating valve, the gas passes through the one-way valve 6 and the pressure booster 5. The one-way valve 6 can make the rear end pressure rise faster, and the pressure booster 5 can increase the pressure of the input gas passing through to reach the required test air pressure, which can be up to 1.0 MPa. After the gas passes through the one-way valve 6 and the pressure booster 5, it reaches the electromagnetic valve 7. The operator starts the test program on the computer system 11 to control the opening and closing of the electromagnetic valve 7 to make the gas enter the test pipeline 8 of the vehicle.

[0054] In some embodiments, the test bench further comprises a shut-off valve 2 arranged between the gas source 1 and the filter pressure regulator 3. The shut-off valve 2 comprises two states of full opening and full closing. In normal operation, the shut-off valve 2 is in the full opening state. When a fault occurs, the shut-off valve 2 can be switched to the full closing state, thereby protecting the test bench.

[0055] In summary, the test bench is connected with the gas source 1 and the brake pipeline of the vehicle through a hose and a quick connector. The tooling is convenient and fast to install, and the test bench can set different test parameters for pressure maintaining and cleaning tests. During the test, the test bench can automatically run after the parameters are set. The cleaning test can set the exhaust time or exhaust to a specified pressure according to the process requirements of different vehicle models to complete the cleaning. The pressure maintaining test can control the electromagnetic valve 7 and the exhaust valve 9 through the control instructions of the computer system 11 to perform the charging and exhaust. In addition, since the exhaust valve 9 cannot be adjusted in pressure, there is no plug valve in the pressure maintaining pipeline that can adjust the exhaust in pressure. The manual pressure regulating switch provided by the equipment is used for exhaust to adjust the pressure until the working pressure is reached and the pressure maintaining operation is automatically performed.

[0056] The test bench provided by the embodiments of the present application is suitable for various vehicle models such as city vehicles and motor vehicles, has high equipment utilization rate, and can automatically complete the brake pipeline cleaning and pressure maintaining operation.

[0057] It should be noted that in the present specification, relational terms such as first and second are used only to distinguish one entity from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities.

[0058] The test bench provided by the present application is described in detail above. The principle and implementation manner of the present application are described by applying specific examples, and the above description of the examples is only used to help understand the scheme of the present application and the core idea. It should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made to the present application without departing from the principle of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A test bench for testing a pipeline cleaning and pressure maintenance test, characterized in that The test bench comprises: a filter connected with a gas source for providing gas, for filtering impurities and moisture in the gas; a solenoid valve arranged in the test pipeline for controlling opening and closing of the test pipeline; a pressure increasing valve connected with the filter and the solenoid valve, for increasing the pressure of the gas entering the solenoid valve; an exhaust valve connected with the test pipeline, for exhausting the gas in the test pipeline to clean the test pipeline; a pressure detector connected with the test pipeline, for detecting the pressure of the gas in the test pipeline; a computer system connected with the pressure detector, the solenoid valve and the exhaust valve, for controlling opening and closing of the solenoid valve according to the pressure value detected by the pressure detector, and for controlling opening and closing of the exhaust valve; the test bench further comprises a check valve connected with the filter and the solenoid valve, for adjusting the rising speed of the gas pressure; the pressure increasing valve is connected in series between the filter and the solenoid valve, and is connected in parallel with the check valve, to form a double-path pressure adjusting structure; the test bench further comprises a filter pressure regulator connected with the filter, for filtering and regulating the pressure of the gas entering the filter; the test bench further comprises a pressure regulating valve connected with the filter and the pressure increasing valve, for regulating the pressure of the gas entering the pressure increasing valve.

2. The test stand of claim 1, wherein The computer system comprises: an industrial computer connected with the pressure detector, for receiving the pressure value detected by the pressure detector and processing the data; a control module connected with the industrial computer, for controlling opening and closing of the solenoid valve according to the control instruction of the industrial computer.

3. The test stand of claim 2, wherein The industrial computer comprises: a machine shell; a display arranged in the machine shell, for displaying data and setting a pressure threshold value.

4. The test stand of claim 3, wherein The display is a touch display.

5. The test stand of claim 1 wherein, The test bench further comprises a printing device connected with the computer system, for printing a test report.

6. The test stand of claim 1 wherein, The test bench further comprises a manual pressure regulating assembly connected with the test pipeline, for relieving pressure of the test pipeline.

7. The test stand of claim 1 wherein, The test bench further comprises a stop valve connected with an air inlet of the filter pressure regulator.

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