Automatic test system and method for stop valve director

Abstract

The invention provides an automatic test system and method for a stop valve director, and the system comprises a human-computer interaction interface module which is used for the input of a control instruction and the monitoring of an operation state; the PLC control module is connected with the human-computer interaction interface module, and the PLC control module adopts a PLC as a logic control program, is responsible for control logic processing of the whole system and outputs a control instruction; the gas circuit control module is used for converting the control instruction sent by the PLC control module into an electromagnetic valve action and driving a corresponding execution mechanism; and the mechanical execution module is used for converting the gas pressure transmitted by the gas path control module into a pressing action of a mechanical fixing device and driving an execution mechanism to complete operation on various buttons of the stop valve director. The automatic test system and method provided by the invention realize one-key full automation and thoroughly solve the problem of long-time fatigue work of personnel test, and meanwhile, the reliability problem of manual recording is solved by automatically recording the test times.

Description

Technical Field

[0001] The present invention relates to the field of automatic testing technology, and in particular to an automatic testing system and method for a cut-off valve controller. Background Art

[0002] The main function of the cut-off valve is to cut off natural gas, combustion air, cold air and flue gas, etc. It is widely used in pipeline systems in the petroleum, chemical, water treatment, electric power and other industries, playing an important role in controlling fluid flow, protecting equipment and safe operation. The pilot of the cut-off valve, as its core part, plays an important role in ensuring that the cut-off valve can accurately and reliably perform the cut-off action.

[0003] However, the commander needs to undergo a lot of tests, especially life tests, to ensure its performance, so the commander test task consumes a lot of manpower and energy. Life tests require manual operation without the help of equipment, which has the following defects: 1. The test requires manual repeated pressing of mechanical button switches to operate, which can easily cause personnel fatigue; 2. The main content of manual test operation is to press mechanical buttons of different functions in sequence by manpower, and each time several actions are regarded as a set of operation procedures. The process must be repeated dozens of times as a group. A total of several groups must be done each time to complete a complete test. The whole process relies on manual recording of the number of times, which has loopholes. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention proposes an automatic testing system and method for a shut-off valve controller. The automatic testing system provided by the present invention can completely solve the long-term fatigue work of personnel during testing with one click, and can also solve the reliability problem of manual recording by automatically recording the number of tests.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An automatic testing system for a cut-off valve pilot comprises:

[0007] Human-computer interaction interface module, used for inputting control instructions and monitoring the operating status;

[0008] A PLC control module is connected to the human-machine interaction interface module. The PLC control module uses PLC as a logic control program, is responsible for the control logic processing of the entire system, and outputs control instructions;

[0009] The gas circuit control module is used to convert the control instructions issued by the PLC control module into solenoid valve actions to drive the corresponding actuators;

[0010] The mechanical execution module is used to convert the gas pressure transmitted by the gas circuit control module into the pressing action of the mechanical fixing device, and drive the actuator to complete the operation of various buttons of the shut-off valve controller.

[0011] Preferably, the human-machine interaction interface module uses a touch screen as an operating terminal of the human-machine interaction interface.

[0012] Preferably, the control instructions include settings for running, pausing, stopping and the number of running cycles, and the monitoring information is a record of whether the system is currently running and the current number of running times.

[0013] Preferably, the air circuit control module adopts pneumatic control, including air pipes and control valves connected and arranged as required.

[0014] Preferably, the mechanical execution module is composed of a cylinder and a customized installation mechanism, and the cylinder drives the customized installation mechanism to complete the corresponding operations on various buttons of the shut-off valve commander.

[0015] Furthermore, the present invention also provides an automatic testing method for a cut-off valve pilot, comprising the following steps:

[0016] Enter the number of test cycles through the human-computer interaction interface and select the start command;

[0017] The control logic processing is completed through the PLC control module, the sequential action instructions are output, and the counting function as well as the pause, stop and emergency stop protection logic are completed at the same time;

[0018] The control instructions issued by the PLC control module are converted into gas pressure-controlled transmission through the gas circuit control module, and the corresponding actuators are driven;

[0019] The gas pressure transmitted by the gas circuit control module is converted into a pressing action of the mechanical fixing device through the mechanical execution module, thereby replacing manual pressing to realize the full automation of the test process of the shut-off valve pilot.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The automatic test system of the cut-off valve pilot of the present invention can completely solve the fatigue of long-term testing by one-button automatic testing, and also achieve the stability and uniformity of the test time;

[0022] 2. The present invention solves the reliability problem of manual recording by automatically recording the number of tests, and can leave a basis for the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0024] Figure 1 It is a structural block diagram of the automatic test system of the cut-off valve pilot of the present invention;

[0025] Figure 2 It is a flowchart of the automatic testing method of the cut-off valve pilot of the present invention;

[0026] Figure 3 It is a detailed flow chart of the automatic testing method of the cut-off valve pilot of the present invention. DETAILED DESCRIPTION

[0027] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0028] The present invention aims to replace the original large amount of repetitive manual labor with an automated test system for a shut-off valve pilot. The automatic test system for a shut-off valve pilot of the present invention is mainly composed of an electrical control system and a mechanical execution system. Specifically, Figure 1 As shown, the system is divided into four modules. The first module is a human-machine interaction interface module using a touch screen as a human-machine interaction interface, the second module is a PLC control module using a PLC as a logic control program, the third module is an air circuit control module using an air circuit system as a transmission means, and the fourth module is a mechanical execution module that completes the final action through a mechanical execution system.

[0029] The human-machine interaction interface module is used as the operation terminal, and is responsible for inputting control instructions and monitoring the operation status. The control instructions include setting the operation, pause, stop and the number of operation cycles. The monitoring information is the current operation and the current operation number record.

[0030] The PLC control module is responsible for the control logic processing of the entire system, including sequential and appropriately spaced control actions, cycle count recording, and logic priority processing of various safety protections, etc. It is the control center of the automatic test system of the entire shut-off valve controller.

[0031] The air circuit control module adopts pneumatic control, including air pipes and control valves connected and arranged as required, which are used to convert the control instructions issued by the PLC control module into solenoid valve actions to drive the corresponding actuators.

[0032] The mechanical execution module consists of a cylinder and a customized installation mechanism, which is used to convert the gas pressure transmitted in the gas circuit control module into a pressing action of the cylinder push rod. The cylinder drives the customized installation mechanism to complete the corresponding operations of various buttons of the shut-off valve controller.

[0033] The automatic test system of the shut-off valve controller of the present invention forms an independent test system from the front end to the back end as a whole, realizes a fully automatic test process, thereby replacing manual operation, and its working process is: first, input the number of test cycles and select the start command through the human-computer interaction interface; the PLC control module completes the control logic processing, outputs the sequential action command, and simultaneously completes the counting function and the pause, stop, and emergency stop protection logic; the solenoid valve switches to transmit appropriate air pressure in an interval sequence according to the PLC control logic, and finally drives the actuator to complete the operation of various buttons of the shut-off valve controller, thereby realizing the automatic test of the shut-off valve controller.

[0034] Furthermore, if Figure 2 and Figure 3 As shown, the present invention also provides an automatic testing method for a cut-off valve pilot, the method comprising the following steps:

[0035] S1: Input the number of test cycles through the human-computer interaction interface and select the start command;

[0036] S2: Complete control logic processing through the PLC control module, output sequential action instructions, and simultaneously complete the counting function as well as pause, stop, and emergency stop protection logic;

[0037] S3: The control command issued by the PLC control module is converted into a gas pressure-controlled transmission through the gas circuit control module, and the corresponding actuator is driven;

[0038] S4: The gas pressure transmitted by the gas circuit control module is converted into a pressing action of the mechanical fixing device through the mechanical execution module, thereby replacing manual pressing to realize the full automation of the test process of the shut-off valve pilot.

[0039] In summary, the automated testing system of the shut-off valve controller of the present invention can completely solve the long-term fatigue work of personnel in testing with one click, and at the same time, it can solve the reliability problem of manual recording by automatically recording the number of tests, and can leave a basis for the test.

[0040] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. An automatic test system for a cut-off valve pilot, characterized in that: The system comprises: Human-computer interaction interface module, used for inputting control instructions and monitoring the operating status; A PLC control module is connected to the human-machine interaction interface module. The PLC control module uses PLC as a logic control program, is responsible for the control logic processing of the entire system, and outputs control instructions; The gas circuit control module is used to convert the control instructions issued by the PLC control module into solenoid valve actions to drive the corresponding actuators; The mechanical execution module is used to convert the gas pressure transmitted by the gas circuit control module into the pressing action of the mechanical fixing device, and drive the actuator to complete the operation of various buttons of the shut-off valve controller.

2. The automatic test system for the cut-off valve pilot according to claim 1, characterized in that: The human-machine interaction interface module uses a touch screen as an operating terminal of the human-machine interaction interface.

3. The automatic test system for the cut-off valve pilot according to claim 1, characterized in that: The control instructions include the settings of run, pause, stop and the number of run cycles, and the monitoring information is a record of whether the system is currently running and the current number of runs.

4. The automatic test system for the cut-off valve pilot according to claim 1, characterized in that: The air circuit control module adopts pneumatic control, including air pipes and control valves connected and arranged as required.

5. The automatic test system for the cut-off valve pilot according to claim 1, characterized in that: The mechanical execution module is composed of a cylinder and a customized installation mechanism, and the cylinder drives the customized installation mechanism to complete the corresponding operations on various buttons of the cut-off valve commander.

6. An automatic testing method for a cut-off valve pilot, characterized in that: The method comprises the following steps: Enter the number of test cycles through the human-computer interaction interface and select the start command; The control logic processing is completed through the PLC control module, the sequential action instructions are output, and the counting function as well as the pause, stop and emergency stop protection logic are completed at the same time; The control instructions issued by the PLC control module are converted into gas pressure-controlled transmission through the gas circuit control module, and the corresponding actuators are driven; The gas pressure transmitted by the gas circuit control module is converted into a pressing action of the mechanical fixing device through the mechanical execution module, thereby replacing manual pressing to realize the full automation of the test process of the shut-off valve pilot.

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