Testing device of electromagnetic valve control equipment

Abstract

The utility model provides a testing device for electromagnetic valve control equipment, and relates to the technical field of equipment testing. The front panel is provided with a monitoring station simulation button, a liquid level alarm simulation button, a relay, a test interface, a transformer interface and a main power switch. The test interface is respectively connected in parallel with an indicating lamp of the monitoring station simulation button, an indicating lamp of the liquid level alarm simulation button and a coil of the relay. A transformer, a high-power resistor and a signal acquisition board are arranged in the box body; the transformer is connected with the standby power supply interface through the transformer interface; the high-power resistor is externally connected with an electromagnetic valve control interface, internally connected in series with a current detection interface of the signal acquisition board and connected in parallel with the relay; and the signal acquisition board is respectively connected with the monitoring station simulation button, the liquid level alarm simulation button and the relay. The rear panel is provided with a socket and a fan. According to the utility model, the integration level and usability of the testing device are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of equipment testing, in particular to a testing device for solenoid valve control equipment. Background Art

[0002] Solenoid valve control devices connect to a system using a variety of signals, including on / off signals, high-current power, and bus communication signals. Testing of these devices is a frequent requirement during their design, production, commissioning, and acceptance. This testing requires connecting to multiple peripheral devices, which is time-consuming, inefficient, and wasteful. Utility Model Content

[0003] Therefore, the technical problem to be solved by the present invention is to provide a testing device for a solenoid valve control device, which can simulate various types of signals to test the solenoid valve control device and improve the testing efficiency.

[0004] The test device for the solenoid valve control device provided by the utility model is a rectangular parallelepiped box having a front panel and a rear panel;

[0005] The front panel is provided with a monitoring console simulation button, a liquid level alarm simulation button, a relay, a test interface, a transformer interface and a main power switch;

[0006] The monitoring station simulation button is connected to the monitoring station interface, and the monitoring station simulation button is a press-type button with an indicator light;

[0007] The liquid level alarm simulation button is connected to the liquid level detection interface, and the liquid level alarm simulation button is a push-type button with an indicator light;

[0008] The relay is connected to the solenoid valve control interface;

[0009] The test interface is connected in parallel with the indicator light of the monitoring station simulation button, the indicator light of the liquid level alarm simulation button and the coil of the relay respectively;

[0010] The transformer, high-power resistor and signal acquisition board are installed in the box;

[0011] The transformer is connected to the backup power supply interface via the transformer interface;

[0012] The high-power resistor is externally connected to the solenoid valve control interface, internally connected in series with the current detection interface of the signal acquisition board, and is connected in parallel with the relay;

[0013] The signal acquisition board is externally connected to the monitoring station interface, the solenoid valve control interface and the liquid level detection interface, and is connected to the host computer CAN bus interface; internally connected to the monitoring station simulation button, the liquid level alarm simulation button and the relay;

[0014] The rear panel is provided with a socket and a fan.

[0015] On the other hand, in an embodiment of the present invention, a ventilation hood is further installed on the box body, the ventilation hood has a ventilation channel, the fan is located at the air outlet of the ventilation channel, and the high-power resistor is located in the ventilation channel.

[0016] Furthermore, the cross section of the ventilation channel is rectangular, and the center line of the ventilation channel and the center of the fan are located in the same straight line.

[0017] Furthermore, the ventilation hood has a U-shaped cross section and is fixed to the top or bottom of the box body, and the ventilation hood and the top or bottom of the box body form a ventilation channel.

[0018] Furthermore, the diameter of the air outlet of the ventilation channel gradually expands.

[0019] Furthermore, the maximum diameter of the air outlet of the ventilation channel is larger than the outer contour of the fan.

[0020] Furthermore, the test interface adopts a banana socket.

[0021] Furthermore, the socket on the rear panel is an aviation socket.

[0022] Beneficial effects:

[0023] The test device provided by the utility model adopts an integrated design, integrates various devices, can simulate various types of signals, does not need to actually connect to peripheral devices, and at the same time reduces the volume and improves the integration of the device.

[0024] The signal acquisition board collects the current value of the high-power resistor through the current detection interface and can test the maximum current output of a single channel.

[0025] A ventilation cover is installed and the high-power resistor is installed in the ventilation channel to ensure the heat dissipation of the high-power resistor, thereby improving the reliability of the test device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0027] Figure 1 This is a three-dimensional diagram of the appearance of the box body of Example 1 of the present utility model;

[0028] Figure 2 This is a front view of the front panel of Example 1 of the present utility model;

[0029] Figure 3 This is a schematic diagram of the connection of the components of Example 1 of the present utility model;

[0030] Figure 4 This is a schematic diagram of the air duct flow direction in the box of Example 2 of the utility model;

[0031] Figure 5 This is a schematic diagram of heat dissipation of a high-power resistor in Example 2 of the utility model.

[0032] In the figure: 1- cabinet, 2- front panel, 3- rear panel, 4- fan, 5- high power resistor, 6- ventilation cover DETAILED DESCRIPTION

[0033] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. The principles and features of the present invention will be described below in conjunction with the accompanying drawings. It should be noted that the embodiments and features of the embodiments in this application may be combined with each other unless there is a conflict. The embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention.

[0034] The utility model provides a testing device for solenoid valve control equipment, which provides peripheral circuits such as power supply, load, and signal display for the solenoid valve control equipment. It is used to test the function and reliability of the solenoid valve control equipment and is widely used in equipment design, production, debugging, acceptance and other links.

[0035] The solenoid valve control system receives signals such as on / off signals, high current power, and bus communication signals. Testing with actual connected peripheral devices requires multiple devices. The test device of this utility model can simulate multiple signal types. This device utilizes an integrated design that integrates the relevant signals of each device for simulation. It can also test the maximum current output of a single channel, maximizing the testing of device functions and performance, and reproducing actual usage without materials.

[0036] Example 1

[0037] like Figures 1 to 3 As shown, the test device of this embodiment is an integrated design, and all devices are integrated and installed through a rectangular box 1. The box 1 has a front panel 2 and a rear panel 3. Various power devices are installed inside the box 1, and the frame of the box 1 can be an aluminum alloy frame.

[0038] The solenoid valve control device is the device under test. This embodiment specifically shows a solenoid valve control box, which features a monitoring console interface, a liquid level detection interface, a solenoid valve control interface, and a backup power supply interface. The front panel 2 is the operating area, housing a monitoring console simulation button, a liquid level alarm simulation button, a relay, a test interface, a transformer interface, and a main power switch. These interfaces correspond to the various interfaces of the device under test and to external voltage measurement devices such as a multimeter.

[0039] The monitoring console's analog button is connected to the monitoring console interface of the device under test. A push-button with an indicator light is used to simulate the monitoring console sending a switch command to the solenoid valve control box. When the push-button is pressed, the test device sends a solenoid valve start signal to the device under test. When the push-button is in the released position, the test device sends a solenoid valve stop signal to the device under test. An indicator light is used to receive and display the feedback signal from the device under test regarding this operation. If the corresponding green indicator light is lit when the button is pressed, it indicates that the device under test has received the signal and provided feedback. If the green indicator light is off at this time, it indicates that the device under test has failed and did not receive the signal.

[0040] The liquid level alarm simulation button is externally connected to the liquid level detection interface of the device under test. This button is also a push-button with an indicator light. It is used to simulate the liquid level alarm signal and send it to the device under test. The device under test will give a feedback signal after responding. The indicator light is used to receive and display the feedback signal of the device under test. If the button is pressed and the corresponding red indicator light is on, it indicates that the device under test has received the signal and provided a feedback signal. If the red indicator light is off at this time, it means that the device under test is faulty and has not received this signal.

[0041] The relay is externally connected to the solenoid valve control interface of the device under test, internally connected in parallel with the high-power resistor 5, and serially connected to the current detection interface of the signal acquisition board; when the device under test issues a solenoid valve opening command, power is supplied to the relay and the high-power resistor 5 through the solenoid valve control interface, and the mechanical indicator on the relay is used to show whether this command has been received.

[0042] The test interface is internally connected in parallel with the indicator lights of each illuminated button and the coil of the relay, and uses a banana socket to provide an interface for external voltage measuring equipment such as a multimeter to measure whether the accuracy of the feedback signal voltage value meets the design requirements of the device under test.

[0043] The transformer interface is connected to the backup power interface of the device under test to provide an external power supply for the device under test.

[0044] The main power switch is the power switch of the test equipment in this embodiment.

[0045] The transformer, high-power resistor 5 and signal acquisition board are installed in the box 1.

[0046] The transformer is externally connected to the standby power supply interface of the device under test and is used to provide an external power supply when checking the standby voltage function of the device under test.

[0047] High-power resistor 5 is connected externally to the solenoid valve control interface of the device under test and internally in parallel with the relay. The circuit is connected in series with the current detection interface of the signal acquisition board. High-power resistor 5 simulates the actual power consumption of an actual solenoid valve and verifies whether the solenoid valve control interface of the device under test meets the high-power requirements.

[0048] The signal acquisition board is connected to the CAN bus interface of the host computer for communication, and is connected to the solenoid valve control interface, monitoring console interface, and liquid level detection interface of the device under test. It is internally connected to various analog buttons and relays to collect the status of various switch signals.

[0049] In particular, by connecting it in series with the high-power resistor 5 and collecting the current value when the resistor is working, the maximum current output of a single channel can be tested, thereby testing the function and performance of the device to the maximum extent.

[0050] The MCU of the board collects and aggregates the collected information and sends the collected test point status, current value, etc. to the host computer via the CAN bus.

[0051] The rear panel 3 is provided with a socket and a fan 4. The socket can be an aviation socket and is an external connection interface. The fan 4 dissipates heat for the power devices in the box 1.

[0052] The signal acquisition board of this embodiment uses an existing public data acquisition board, which can easily realize various signal acquisitions and send the acquired information. The contribution of the utility model does not lie in how to design the signal acquisition board, but in the overall integrated design.

[0053] The test device of the embodiment of the utility model improves the integration of the device, reduces the volume, takes into account multiple configurations, and improves the test efficiency and reliability.

[0054] Example 2

[0055] On the other hand, the present invention has made further improvements based on the technical solution disclosed in Example 1.

[0056] The high-power resistor 5 simulates the actual power consumption of an actual solenoid valve and generates severe heat during use. This embodiment improves the heat dissipation structure of the box 1 and focuses on solving the heat dissipation problem of the high-power resistor 5.

[0057] like Figure 3 、 Figure 4As shown, the idea of this embodiment to solve the heat dissipation problem is to separate the high-power resistor 5 from other components and set up a separate air duct for the high-power resistor 5. A ventilation cover 6 is added to the box 1, and the ventilation cover 6 has a ventilation channel. The fan 4 is set at the air outlet of the ventilation channel, and the high-power resistor 5 is placed in the ventilation channel.

[0058] The ventilation channel cross section of the ventilation hood 6 is rectangular, the center line of the ventilation channel is on the same straight line as the center of the fan 4 , the air inlet of the ventilation channel of the ventilation hood 6 is close to the front panel 2 , and the air outlet is close to the rear panel 3 .

[0059] Specifically, the ventilation hood 6 can be U-shaped in cross section and fixed to the top of the box body 1. The ventilation hood 6 forms a ventilation channel together with the top of the box body 1. Similarly, the U-shape can be inverted to form a ventilation channel with the bottom of the box body 1.

[0060] As a preferred embodiment, the diameter of the ventilation channel outlet of the ventilation hood 6 gradually expands to form a trumpet shape to form a narrow channel in the middle of the ventilation channel. The high-power resistor 5 is placed in the narrow channel, the wind flow rate is faster, and the heat dissipation effect is better.

[0061] In particular, the maximum diameter of the air outlet of the ventilation channel is larger than the outer contour of the fan 4, so that the air drawn by the fan 4 can be better applied to the ventilation channel.

[0062] It is understandable that the use of a fan 4 with a large air volume is also conducive to heat dissipation. The present invention uses an 8025 fan 4 to form an air duct flowing from front to back inside the sheet metal cavity.

[0063] The test device provided by this utility model not only reduces its size, integrating previously scattered components into a single device, improving ease of use and portability, but also uses a signal acquisition card to provide data acquisition and host computer communication functions for the device, increasing data traceability. Furthermore, the use of an air duct design effectively improves the heat dissipation capacity of the power device and enhances the stability of the entire device.

[0064] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0065] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0066] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0067] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0068] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A test device for a solenoid valve control device, wherein the solenoid valve control device is a device to be tested and has a monitoring station interface, a liquid level detection interface, a solenoid valve control interface, and a backup power supply interface, characterized in that: The testing device is a rectangular parallelepiped box (1), and the box (1) has a front panel (2) and a rear panel (3); The front panel (2) is provided with a monitoring station simulation button, a liquid level alarm simulation button, a relay, a test interface, a transformer interface and a main power switch; The monitoring station simulation button is connected to the monitoring station interface, and the monitoring station simulation button is a press-type button with an indicator light; The liquid level alarm simulation button is connected to the liquid level detection interface, and the liquid level alarm simulation button is a push-type button with an indicator light; The relay is connected to the solenoid valve control interface; The test interface is connected in parallel with the indicator light of the monitoring station simulation button, the indicator light of the liquid level alarm simulation button and the coil of the relay respectively; A transformer, a high-power resistor (5) and a signal acquisition board are installed in the box (1); The transformer is connected to the backup power supply interface via the transformer interface; The high-power resistor (5) is externally connected to the solenoid valve control interface, internally connected in series with the current detection interface of the signal acquisition board, and connected in parallel with the relay; The signal acquisition board is externally connected to the monitoring station interface, the solenoid valve control interface and the liquid level detection interface, and is connected to the host computer CAN bus interface; internally connected to the monitoring station simulation button, the liquid level alarm simulation button and the relay; The rear panel is provided with a socket and a fan.

2. The testing device according to claim 1, wherein: A ventilation hood (6) is installed on the box body (1), the ventilation hood (6) has a ventilation channel, the fan (4) is located at the air outlet of the ventilation channel, and the high-power resistor (5) is located in the ventilation channel.

3. The testing device according to claim 2, characterized in that The cross section of the ventilation channel is rectangular, and the center line of the ventilation channel and the center of the fan (4) are located on the same straight line.

4. The testing device according to claim 3, characterized in that: The ventilation hood has a U-shaped cross section and is fixed to the top or bottom of the box body (1). The ventilation hood (6) and the top or bottom of the box body (1) form a ventilation channel.

5. The testing device according to claim 3, characterized in that: The diameter of the air outlet of the ventilation channel gradually expands.

6. The testing device according to claim 5, characterized in that: The maximum diameter of the air outlet of the ventilation channel is larger than the outer contour of the fan (4).

7. The testing device according to any one of claims 1 to 6, characterized in that: The test interface adopts a banana socket.

8. The testing device according to any one of claims 1 to 6, characterized in that: The socket of the rear panel (3) is an aviation socket.

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