Comprehensive detection test bed for railway vacuum excrement collection system

Abstract

The utility model discloses a comprehensive detection test bed for a railway vacuum excrement collection system, which comprises an external bedpan test piece, a bedpan test electromagnetic valve, a vacuum generator and a vacuumizing electromagnetic valve, and the side end of the external bedpan test piece is communicated with a simulation sewage box through the bedpan test electromagnetic valve. A simulated sewage tank vacuum meter and a simulated sewage tank liquid level meter are mounted on the simulated sewage tank, the simulated sewage tank is communicated with a vacuum generator through a vacuumizing electromagnetic valve, and the simulated sewage tank is communicated with a to-be-tested vacuum switch 1 and a to-be-tested vacuum switch 2 through a vacuum switch testing electromagnetic valve; the simulated sewage box is communicated with an external air-water control panel through an external vacuumizing electromagnetic valve, and the external air-water control panel is communicated with a filtering pressure reducing valve 1. The utility model relates to a comprehensive detection test bed for a railway vacuum excrement collection system, which realizes the purpose of detection test through the structural arrangement.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage conveying and discharging systems dedicated to railway products, in particular to a comprehensive detection test bench for railway vacuum feces collection systems. Background Art

[0002] The toilets on railway passenger trains have been transformed from full direct discharge to the installation of toilet collectors, which collect the toilet sewage during the operation of the passenger train and temporarily store it in the sewage box. The vacuum toilet collector is an important part of the railway energy-saving and environmental protection system. It has a sewage discharge function and plays a very important role in improving the environment along the train. With the rapid development of the railway transportation industry, the application of vacuum feces collection systems in railway vehicles is becoming more and more extensive. However, the existing vacuum feces collection system detection equipment has a single function and complex operation, and cannot meet the comprehensive detection needs of multiple performance indicators. Therefore, the development of a new type of railway vacuum feces collection system multifunctional comprehensive detection test bench to improve detection efficiency and accuracy has become an urgent problem to be solved. Utility Model Content

[0003] The purpose of the utility model is to provide a comprehensive detection test bench for a railway vacuum feces collection system to solve the problems raised in the above background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solutions: a railway vacuum feces collection system comprehensive detection test bench, comprising an external bedpan test piece, a bedpan test solenoid valve, a vacuum generator, and a vacuum extraction solenoid valve; a side end of the external bedpan test piece is connected to a simulated waste tank via the bedpan test solenoid valve; a simulated waste tank vacuum gauge and a simulated waste tank liquid level gauge are mounted on the simulated waste tank; and the simulated waste tank is further connected to a vacuum generator via the vacuum extraction solenoid valve;

[0005] The simulated dirt tank is connected to a vacuum switch 1 to be tested and a vacuum switch 2 to be tested through a vacuum switch test solenoid valve. The simulated dirt tank is connected to an external air-water control panel through an external vacuum solenoid valve. The external air-water control panel is connected to a filter pressure reducing valve 1. The filter pressure reducing valve 1 is connected to a water tank through a water supply solenoid valve. A water tank level gauge is installed on the water tank. The water tank is connected to a circulating water solenoid valve through a circulating water pump.

[0006] Specifically, the circulating water solenoid valve is connected to a simulated dirt tank, and the external air-water control panel is connected to the simulated dirt tank via an external vacuum solenoid valve.

[0007] Specifically, the external air-water control panel is connected to an external dirt box via an external dirt box solenoid valve, and an external dirt box vacuum gauge is installed on the external dirt box.

[0008] Specifically, the air source is connected to the filter pressure reducing valve 1, and the air source is connected to an electronic pressure regulating valve through the filter pressure reducing valve 2. The electronic pressure regulating valve is connected to a display meter of a pressure switch to be tested through a display meter of a water boosting device to be tested, and the display meter of the pressure switch to be tested is connected to pressure switch 1 to be tested and pressure switch 2 to be tested.

[0009] Specifically, the electronic pressure regulating valve is also connected to a display meter of a water boosting device to be tested through a water boosting device test solenoid valve, and the display meter of the water boosting device to be tested is connected to an external water boosting device.

[0010] Specifically, the gas source is connected to a filter pressure reducing valve 3 .

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The present invention has diversified functions: it covers the detection of multiple key performance indicators of the vacuum feces collection system, improving the detection efficiency and accuracy; it is easy to operate: through the coordinated use of the automatic control module and the human-computer interaction module, it simplifies the operation process and reduces the difficulty of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the main body of the utility model.

[0014] In the picture: 1-External bedpan test piece 2-Bedpan test solenoid valve

[0015] 3- Vacuum generator 4- Vacuum solenoid valve

[0016] 5-Simulated dirt tank 6-Simulated dirt tank vacuum gauge

[0017] 7-Simulated sewage tank level gauge 8-Water tank level gauge

[0018] 9- Water tank 10- Circulating water pump

[0019] 11- Water supply solenoid valve 12- External vacuum solenoid valve

[0020] 13- External air and water control panel 14- External dirt tank solenoid valve

[0021] 15- External dirt box vacuum gauge 16- External dirt box

[0022] 17-Filter pressure reducing valve 1 18-Vacuum switch test solenoid valve

[0023] 19- Vacuum switch 1 to be tested 20- Vacuum switch 2 to be tested

[0024] 21-Pressure switch 1 to be tested 22-Pressure switch 2 to be tested

[0025] 23-Test pressure switch display meter 24-Pressure switch test solenoid valve

[0026] 25- Display meter of water booster device to be tested 26- Solenoid valve for testing water booster device

[0027] 27-External water booster device 28-Electronic pressure regulating valve

[0028] 29-Filter pressure reducing valve 2 30-Filter pressure reducing valve 3

[0029] 31-Circulating water solenoid valve. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] See also Figure 1 The utility model provides a technical solution: a comprehensive detection test bench for railway vacuum feces collection system. The multifunctional comprehensive test bench for feces collection is a performance test bench for unified vacuum feces collection device system and toilet bowl components, soda tray components, and electrical control panel components. It includes an operating table, feces collection system and component rack, ice maker, vacuum pump, water pump, gas storage tank, water tank, simulated sewage box, vacuum meter, measuring cup, computer control system, and data acquisition system.

[0032] 1) Test station: The test bench is equipped with the overall factory test positions for toilet components, air and water tray, electric control panel and toilet collection system.

[0033] 2) Ice maker: It is used to meet the temperature requirements of 3℃ and 8℃ required for the factory inspection of the feces collection device. First, cool the temperature to below 3℃, put the sensor into the constant temperature bath to check whether the heating indicator light starts to light up.

[0034] 3) Vacuum pump: used to simulate the vacuum degree in the dirt box reaching -25kPa to test the sealing of the entire system.

[0035] 4) Water pump: This scheme has a total of 1 water pump: used for water circulation between the simulated sewage tank and the small water tank in the test bench, because the flushing water of the toilet comes from the small water tank, which is equipped with a liquid level gauge. When the water is insufficient, the pneumatic water pump draws water from the simulated sewage tank to replenish it, and the water after the toilet is flushed will flow back to the simulated sewage tank.

[0036] 5) Computer control system: It consists of a PLC controller, an industrial all-in-one machine and electrical circuits, which realizes human-computer interaction and all motion control of the test bench.

[0037] 6) Simulated waste tank: A sealed metal box with a volume of about 100L configured to simulate the tooling state of a waste tank.

[0038] 7) Data acquisition system: collects and monitors key parameters of vacuum pressure maintenance during routine tests to determine whether the test results are qualified.

[0039] 8) Vacuum gauge: When the feces collection device is inspected at the factory, it is necessary to reach a specified vacuum degree and test the change in the pressure value after maintaining the pressure for 20 minutes. The vacuum gauge is used to provide data support.

[0040] 9) Test platform main frame: mainly used to support the frame of simulated dirt box, test gas circuit, PLC electric control cabinet, operating table, etc.

[0041] The test bench is designed with three main sections: a main console, a collection system, and a factory test station. The console is equipped with power-on, power-off, and emergency stop buttons. A warning light and an integrated control panel are installed on the top of the test bench. The sides of the test bench feature power and gas inlets, a circuit breaker, a grounding post, a pressure regulating valve, a fan, and an SCE network interface.

[0042] The integrated multifunctional test bench is controlled through a combination of a PLC and host computer software. The PLC is responsible for gas circuit control, electrical signal simulation, and data acquisition, while the host computer software is responsible for human-computer interaction, test data analysis, and report generation. The human-computer interface is an industrial all-in-one computer or industrial personal computer. The pipeline solenoid valves are suitable models of imported brands such as SMC and FESTO. The pressure sensors use high-performance precision sensors to fully guarantee the quality and test stability of the test bench.

[0043] The test bench itself can meet the testing requirements of air-water tray components, electric control panel components, toilet components, water booster devices, temperature switches, pressure switches, vacuum switches, and button components. When combined with an external waste tank, it can meet the performance testing requirements of the feces collection system.

[0044] The integrated multifunctional test bench is designed as a conventional single-sided desktop operation test bench. The operation test bench and test stations can be flexibly arranged according to the installation location conditions on site.

[0045] The test bench is sturdy and aesthetically pleasing, with all materials treated for corrosion. The frame is constructed of sheet metal with a plastic-sprayed finish. The test bench features an open-door design, facilitating subsequent commissioning and maintenance. The equipment features universal casters with brakes, making it easy to maneuver and position anywhere.

[0046] The overall equipment structure conforms to ergonomics, and the operator can operate it conveniently while sitting or standing. At the same time, the equipment is equipped with a display screen and a retractable keyboard and mouse, which makes it convenient for the operator to operate and observe the detection status.

[0047] The multifunctional, integrated test bench for toilet collection is used during the production phase. Routine testing provides information for monitoring the production process and assessing whether the product meets relevant technical requirements. The test bench can cover factory inspection of toilet collection devices, rational testing of toilet components, and routine testing of electronic control panel components.

[0048] To prevent water from splashing onto the workshop floor during toilet testing, a water trough is provided at the bottom of the workstation for easy collection and cleaning.

[0049] The overall equipment structure is ergonomic and is equipped with a display screen and a retractable keyboard and mouse to facilitate operators to operate and observe the detection status.

[0050] Since the toilet collection system component testing primarily focuses on the air and water tray and electronic control, the test bench was designed with this compatibility in mind. A platform is included on the left side of the operating surface to accommodate both squat and seated toilets. The air and water tray is placed on a tilted surface and features support fixtures and quick-release fixtures for quick removal. The electronic control panel is placed flat on the operating surface and is covered with a wear-resistant anti-static rubber surface.

[0051] In order to improve the efficiency of wiring, a special combing row is made.

[0052] It includes an air system, a water system and a simulated vacuum toilet system. The simulated vacuum toilet system includes an external sewage tank test module, an external flush button test module, an external bedpan test module, an external air and water control panel test module, and an external control module test module.

[0053] The water tank and water pump are used to provide flushing test water for the flushing test, and the air system is used to provide compressed air for vacuum testing, flushing testing and pneumatic components of the test bench.

[0054] The multifunctional comprehensive detection test bench of this embodiment also includes an integrated host computer and a PLC controller. The integrated host computer is responsible for sending instructions and receiving and storing data; the PLC controller is used to execute the instructions sent by the integrated host computer and control the corresponding solenoid valve actions. Each sensor sends the parameters collected during the test to the acquisition module of the PLC controller through the bus, and sends the data to the integrated host computer through the PLC controller. This embodiment uses the PLC controller as the control center of the entire system, which effectively improves the anti-interference performance of signal transmission in scenarios with large interference or long-line digital I / O applications.

[0055] like Figure 1As shown, the input of filter-pressure reducing valve 17 is connected to the air source, and the output is connected to the air-water control panel under test (DUT) 13. It provides 1000 kPa compressed air to supply the air source to the DUT. The input of filter-pressure reducing valve 29 is connected to the air source, and the output is connected to the input of electronic pressure regulating valve 28, which also provides 1100 kPa compressed air. The output of electronic pressure regulating valve 28 is divided into two channels, connected to the inputs of pressure switch test solenoid valve 24 H7 and water booster test solenoid valve 26 H8, respectively. The output of pressure switch test solenoid valve 24 H7 is connected to the pressure switch test port of the test bench for incoming inspection of pressure switch components. The output of water booster test solenoid valve 26 H8 is connected to the water booster test port of the test bench for incoming inspection of water booster components. Pressure gauges 23 and 25 are installed on the output pipelines of pressure switch test solenoid valve 24 H7 and water booster test solenoid valve 26 H8, respectively, to display the pressure of the corresponding pipelines. 30 Filter pressure reducing valve 3, the input end is connected to the air source, and the output end is connected to the solenoid valves H1-H5, H7-H8, and the vacuum generator, providing a 600KPa compressed air source for the above devices.

[0056] like Figure 1 As shown, the simulated waste tank (5) is equipped with a vacuum gauge (6) and a liquid level gauge (7) to display the simulated waste tank's vacuum level and liquid level in real time. The input of the circulating water solenoid valve (31) H3 is connected to the simulated waste tank, and its output is connected to the input of the circulating water pump (10), whose output is connected to the water tank (9). The water tank is equipped with a liquid level gauge (8) to display the tank's real-time liquid level. When the water tank is insufficient for the flushing test, the circulating water solenoid valve is controlled to open, and the circulating water pump is activated to pump water from the simulated waste tank into the water tank for recycling, thereby conserving water. One end of the water tank is connected to the input of the water supply solenoid valve (12) H4, and its output is connected to the test port of the test component of the air-water control panel (13), providing the water required for the flushing test. The vacuum switch test solenoid valve (18) H5 is connected to the simulated waste tank at one end and the vacuum switch test port of the test bench at the other end. This is used for incoming inspection of vacuum switch components. 2. One end of the toilet test solenoid valve H1 is connected to the simulated waste tank inside the test bench, and the other end is connected to the test bench toilet test port, which is used for factory testing of toilet components. 4. One end of the vacuum solenoid valve H2 is connected to the simulated waste tank, and the other end is connected to the vacuum generator, which is used to generate vacuum for the simulated waste tank. At the same time, in order to perform corresponding tests on the actual waste tank, the test bench also provides corresponding interfaces. 14. One end of the external waste tank solenoid valve is connected to the test bench, and the other end is connected to the waste tank test port, which is used to perform pressure maintenance tests on the waste tank under test 16. Among them, 15. The vacuum gauge 2 is installed on the waste tank pipeline to display the real-time vacuum level of the waste tank under test.

[0057] When the air and water control panel assembly needs to be tested, first connect the air and water control panel to the Figure 1 At the external air and water control panel 13, connect the air source and water source, and connect it to the simulated dirt box. Then the system controls the vacuum solenoid valve to open, the vacuum generator starts working, and the system starts to vacuum. When the set vacuum degree is reached, the system stops and the system automatically performs water flushing test and pressure holding test on the test piece of the air and water control panel.

[0058] When the dirt box needs to be tested, first connect the dirt box to Figure 1 At the external dirt box in 16, connect the vacuum port and the dirt box inlet, then the system controls the vacuum solenoid valve to open, the vacuum generator starts working, and the system starts vacuuming. When the set vacuum degree is reached, the system stops and the system automatically performs a pressure-maintaining test on the dirt box to be tested.

[0059] When it is necessary to test the vacuum switch components, first connect the vacuum switch to be tested. Figure 1 In the figure, locate the vacuum switch 1 to be tested at 19 and the vacuum switch 2 to be tested at 20, and connect the corresponding leads to the test port of the test bench. Then the system controls the vacuum solenoid valve to open, the vacuum generator starts to work, and the system starts to vacuum. When the set vacuum degree is reached, the system stops. The system automatically determines whether the vacuum switch is actuated and records it.

[0060] When the toilet assembly needs to be tested, first connect the pressure switch to Figure 1 At the external toilet test piece in middle 1, connect the corresponding water source and air source, then the system controls the vacuum solenoid valve to open, the vacuum generator starts working, and the system starts to vacuum. When the set vacuum degree is reached, the system stops, and the system automatically performs pressure maintenance test and flushing test on the toilet component to be tested, and records them.

[0061] When it is necessary to test the pressure switch components, first connect the toilet component to be tested. Figure 1 In the middle, the pressure switch 1 to be tested 21 and the pressure switch 2 to be tested 22 are located, and the corresponding leads are connected to the test port of the test bench. Then the system controls the electronic pressure regulating valve 28 to the appropriate pressure and opens the pressure switch test solenoid valve 24. The system automatically determines whether the pressure switch is actuated and records it.

[0062] When testing the water booster assembly, first connect the toilet assembly to the Figure 1 At the external water booster device 27, the system then controls the electronic pressure regulating valve 28 to the appropriate pressure, and opens the water booster device test solenoid valve 26. By observing whether there is any air leakage, it is determined whether the water booster is normal and recorded.

[0063] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A comprehensive test bench for railway vacuum feces collection system, characterized by: The device comprises an external bedpan test piece (1), a bedpan test solenoid valve (2), a vacuum generator (3) and a vacuum pumping solenoid valve (4); a side end of the external bedpan test piece (1) is connected to a simulated waste tank (5) via the bedpan test solenoid valve (2); a simulated waste tank vacuum gauge (6) and a simulated waste tank liquid level gauge (7) are installed on the simulated waste tank (5); and the simulated waste tank (5) is also connected to the vacuum generator (3) via the vacuum pumping solenoid valve (4); The simulated dirt box (5) is connected to a vacuum switch 1 (19) to be tested and a vacuum switch 2 (20) to be tested via a vacuum switch test solenoid valve (18). The simulated dirt box (5) is connected to an external air-water control panel (13) via an external vacuum pumping solenoid valve (12). The external air-water control panel (13) is connected to a filter pressure reducing valve 1 (17). The filter pressure reducing valve 1 (17) is connected to a water tank (9) via a water supply solenoid valve (11). A water tank level gauge (8) is installed on the water tank (9). The water tank (9) is connected to a circulating water solenoid valve (31) via a circulating water pump (10).

2. A railway vacuum feces collection system comprehensive detection test bench according to claim 1, characterized in that: The circulating water electromagnetic valve (31) is connected to a simulated dirt tank (5), and the external air-water control panel (13) is connected to the simulated dirt tank (5) via an external vacuum electromagnetic valve (12).

3. The railway vacuum feces collection system comprehensive detection test bench according to claim 2 is characterized by: The external air and water control panel (13) is connected to an external dirt box (16) via an external dirt box solenoid valve (14), and an external dirt box vacuum gauge (15) is installed on the external dirt box (16).

4. A railway vacuum feces collection system comprehensive testing bench according to claim 3, characterized in that: The air source is connected to the filter pressure reducing valve 1 (17), and the air source is connected to an electronic pressure regulating valve (28) through the filter pressure reducing valve 2 (29). The electronic pressure regulating valve (28) is connected to a pressure switch display meter (23) to be tested through a water boosting device display meter (25). The pressure switch display meter (23) to be tested is connected to a pressure switch 1 (21) to be tested and a pressure switch 2 (22) to be tested.

5. The railway vacuum feces collection system comprehensive testing bench according to claim 4 is characterized by: The electronic pressure regulating valve (28) is also connected to a water pressure boosting device display meter (25) to be tested via a water pressure boosting device test solenoid valve (26), and the water pressure boosting device display meter (25) to be tested is connected to an external water pressure boosting device (27).

6. A comprehensive testing platform for railway vacuum feces collection system according to claim 5, characterized in that: The gas source is connected to a filter pressure reducing valve 3 (30).

Images