Valve test platform

Abstract

The utility model relates to a valve test platform, which comprises a box body, the box body is a hollow square structure, the upper end face of the box body is provided with an HMI module, the HMI module is in communication connection with a PLC controller, the PLC controller is arranged in the box body, the PLC controller is electrically connected with an output board card, the output board card is arranged in the box body, and the output board card is electrically connected with the HMI module. The other end of the output board card is electrically connected with a wiring terminal, and the wiring terminal is arranged outside the box body; a power supply is further arranged in the box body, and the PLC and the HMI module are electrically connected with the power supply to form a loop; a box door is hinged to the back of the box body. According to the utility model, the HMI module sends a detection instruction, the PLC controller simulates a work instruction and sends an electric signal, and the output board card and the wiring terminal are electrically connected with the valve, thereby providing a hardware basis for off-line detection of the valve.

Description

Technical Field

[0001] The utility model relates to the field of valve detection, in particular to a valve testing platform. Background Art

[0002] In the petrochemical industry, there are many control valves such as on-off valves, pulse valves, and regulating valves used on site. During operation, the opening and closing of the valves are controlled to control the flow and blocking of various media in the petrochemical process flow, and to control the liquid level, pressure, flow, etc. in the process flow. However, after the valve fails and is repaired offline, it is impossible to test whether its action performance and action linearity are good. If an unrepaired valve is installed in the system, it will waste a lot of time to disassemble and repair it.

[0003] In addition, the positioner of the control valve is an indispensable control component for controlling the control valve. The opening of the control valve can be changed through the positioner. However, due to the limitations of process conditions, the full stroke adjustment of the valve cannot be achieved during the online maintenance of the control valve, and it is impossible to determine whether the positioner and the valve can achieve linear switching.

[0004] Therefore, there is an urgent need for a valve testing platform to provide a hardware foundation for valve offline detection. Summary of the invention

[0005] The utility model provides a valve testing platform to solve the problem that there is no offline testing equipment for testing after the existing valve is repaired. The utility model sends a testing instruction through an HMI module, simulates a working instruction and sends an electrical signal through a PLC controller, and electrically connects the valve through an output board and a wiring terminal, thereby providing a hardware basis for offline valve testing.

[0006] In order to solve the above problems, the utility model proposes a valve test platform, including a box body, the box body is a square structure with a hollow interior, an HMI module is arranged on the upper end surface of the box body, the HMI module is communicatively connected with a PLC controller, the PLC controller is arranged inside the box body, the PLC controller is electrically connected with an output board card, the output board card is arranged inside the box body, the other end of the output board card is electrically connected with a wiring terminal, the wiring terminal is arranged outside the box body;

[0007] A power supply is also provided inside the box, and the PLC controller and the HMI module are respectively electrically connected to the power supply to form a loop;

[0008] A door is hinged on the back of the box.

[0009] The coil and positioner of the valve under test are electrically connected to the wiring terminals, and the human-machine interaction is completed through the HMI module. The PLC controller outputs electrical signals through the output board and wiring terminals to the coil or positioner of the valve under test, thereby driving the valve to move. For staff to make judgments.

[0010] Furthermore, a communication cable is provided between the HMI module and the PLC controller, and the communication cable includes an RS232 interface module and an RS485 interface module.

[0011] Furthermore, a square groove is provided inwardly in the middle of the upper end surface of the box body, the HMI module is arranged in the square groove and fits with the corners of the square groove, a wire hole is provided on the side wall of the square groove corresponding to the communication cable, a baffle is provided at the upper end of the square groove, and the baffle is detachably connected to the box body by bolts;

[0012] The HMI module is arranged between the baffle plate and the square groove.

[0013] Furthermore, the baffle is a U-shaped structure, and the side of the baffle is in contact with the side of the HMI module.

[0014] A square groove and a baffle are provided to position and protect the HMI module.

[0015] Furthermore, a side groove is provided on the side of the box body, and the side groove is a square groove, and a cover is hingedly connected to the side groove with a hinge.

[0016] The side groove is provided to cooperate with the cover for storing wiring tools.

[0017] Through the above technical solution, the beneficial effects of the utility model are:

[0018] 1. The utility model realizes offline valve detection, and sets an HMI module. The HMI module is communicatively connected to a PLC controller, and the PLC controller is arranged inside a box. The PLC controller is electrically connected to an output board, and the output board is arranged inside a box. The other end of the output board is electrically connected to a wiring terminal. The HMI module realizes human-computer interaction, and the HMI module is communicatively connected to the PLC controller, providing a hardware basis for sending instructions and displaying feedback instructions from the PLC controller. The PLC controller outputs an electrical signal to drive the valve action through the output board and the wiring terminal. The staff determines whether the valve action meets the work requirements.

[0019] 2. The utility model has a simple structure and is easy to carry, and the components are easy to disassemble and assemble, and it is easy to use and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an electrical wiring diagram of a valve test platform of the utility model;

[0021] Figure 2 This is one of the structural schematic diagrams of a valve testing platform of the utility model;

[0022] Figure 3This is the second structural schematic diagram of a valve testing platform of the utility model.

[0023] The numbers in the attached drawings are: 1 is the box body, 2 is the HMI module, 3 is the controller, 4 is the output board, 5 is the wiring terminal, 6 is the power supply, 7 is the box door, 8 is the communication cable, 9 is the baffle, and 10 is the cover. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0025] Example 1

[0026] like Figures 1 to 3 As shown, a valve test platform comprises a box body 1, the box body 1 is a square structure with a hollow interior, an HMI module 2 is arranged on the upper end surface of the box body 1, the HMI module 2 is communicatively connected to a PLC controller 3, the PLC controller 3 is arranged inside the box body 1, the PLC controller 3 is electrically connected to an output board 4, the output board 4 is arranged inside the box body 1, the other end of the output board 4 is electrically connected to a wiring terminal 5, the wiring terminal 5 is arranged outside the box body 1;

[0027] The box 1 is also provided with a power supply 6, and the PLC controller 3 and the HMI module 2 are respectively electrically connected to the power supply 6 to form a loop;

[0028] A door 7 is hingedly connected to the back of the box body 1 .

[0029] Preferably, a communication cable 8 is provided between the HMI module 2 and the PLC controller 3 , and the communication cable 8 includes an RS232 interface module and an RS485 interface module.

[0030] The RS232 interface enables communication between the PLC controller 3 and the HMI module 2. The RS485 interface is set up to facilitate communication between the PLC controller 3 and the HMI module 2 and the host computer.

[0031] In this embodiment, the PLC controller 3 adopts the Hollysys LE5108 PLC, the output board 4 adopts the Hollysys K-DOR01 board, and the HMI module 2 selects the Buke HMI2.0 module.

[0032] Preferably, a square groove is provided inwardly in the middle of the upper end surface of the box body 1, the HMI module 2 is arranged in the square groove and fits with the corners of the square groove, the side wall of the square groove is provided with a wire hole corresponding to the communication cable 8, and a baffle 9 is provided at the upper end of the square groove, and the baffle 9 is detachably connected to the box body 1 by bolts;

[0033] The HMI module 2 is disposed between the baffle 9 and the square groove.

[0034] Preferably, the baffle plate 9 is a U-shaped structure, and the side of the baffle plate 9 is in contact with the side of the HMI module 2 .

[0035] Preferably, a side groove is opened on the side of the box body 1, and the side groove is a square groove. The side groove is hinged with a cover 10 through a hinge.

[0036] During operation, the cover 10 is opened, the operating tools and wires are taken out from the side grooves, and the valve is connected to the wiring terminal 5. Then the HMI module 2 is operated to send a test instruction to the PLC controller 3, and the test instruction is an electrical signal. The PLC controller 3 outputs a drive signal, and the drive signal reaches the valve through the output board 4 and the wiring terminal 5. After sending the test instruction, the inspection personnel observe whether the valve is actuated.

[0037] Example 2

[0038] Based on the hardware part of the above embodiment 1, in order to facilitate operation, an operation interface is set on the HMI module 2 in embodiment 2, and the detection type can be selected corresponding to the type of valve in the operation interface. In order to more clearly illustrate the operation process of the utility model, a switch valve and a regulating valve are selected as examples in this embodiment.

[0039] (1) Switch valve: The switch valve needs to detect whether the valve will move after the coil is energized. Select switch control in the operation interface of HMI module 2, the output end of PLC controller 3 outputs an electrical signal, the coil of the switch valve is energized, and the staff observes whether the valve port of the switch valve moves.

[0040] (2) Control valve: The control valve needs to detect the positioner. Select the positioner detection in the operation interface of the HMI module 2. The PLC controller 3 outputs an electrical signal to open the valve of the control valve in different proportions. The staff observes whether the valve port of the control valve is moving.

[0041] The preferred implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings; however, the present invention is not limited to the above-mentioned embodiments. Without violating the spirit of the present invention, i.e., the disclosure scope, any multiple equivalent or equivalent deformations or replacements of the technical solutions of the invention shall fall within the protection scope of the present invention.

Claims

1. A valve testing platform, It is characterized in that The invention comprises a box (1), wherein the box (1) is a square structure with a hollow interior, an HMI module (2) is arranged on the upper end surface of the box (1), the HMI module (2) is communicatively connected to a PLC controller (3), the PLC controller (3) is arranged inside the box (1), the PLC controller (3) is electrically connected to an output board (4), the output board (4) is arranged inside the box (1), the other end of the output board (4) is electrically connected to a wiring terminal (5), the wiring terminal (5) is arranged outside the box (1); A power supply (6) is also provided inside the box (1), and the PLC controller (3) and the HMI module (2) are respectively electrically connected to the power supply (6) to form a loop; A door (7) is hingedly connected to the back of the box body (1).

2. A valve testing platform according to claim 1, It is characterized in that A communication cable (8) is provided between the HMI module (2) and the PLC controller (3), and the communication cable (8) comprises an RS232 interface module and an RS485 interface module.

3. A valve testing platform according to claim 2, It is characterized in that A square groove is provided inwardly at the middle of the upper end surface of the box body (1); the HMI module (2) is arranged in the square groove and fits in with the corners of the square groove; a wire hole is provided on the side wall of the square groove corresponding to the communication cable (8); a baffle (9) is provided at the upper end of the square groove; the baffle (9) is detachably connected to the box body (1) by bolts; The HMI module (2) is arranged between the baffle (9) and the square groove.

4. A valve testing platform according to claim 3, It is characterized in that The baffle (9) is a U-shaped structure, and the side edge of the baffle (9) is in contact with the side edge of the HMI module (2).

5. A valve testing platform according to claim 3, It is characterized in that The box body (1) has a side groove on its side, the side groove being a square groove, and a cover (10) is hingedly connected to the side groove through a hinge.

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