CN110296255B - Priority control device and control method suitable for fully-sealed electric valve - Google Patents
Priority control device and control method suitable for fully-sealed electric valve Download PDFInfo
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- CN110296255B CN110296255B CN201910570505.4A CN201910570505A CN110296255B CN 110296255 B CN110296255 B CN 110296255B CN 201910570505 A CN201910570505 A CN 201910570505A CN 110296255 B CN110296255 B CN 110296255B
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- 238000007789 sealing Methods 0.000 claims abstract description 43
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- 230000000875 corresponding effect Effects 0.000 claims description 5
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/05—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor specially adapted for operating hand-operated valves or for combined motor and hand operation
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/20—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits characterised by logic function, e.g. AND, OR, NOR, NOT circuits
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Abstract
The invention discloses a priority control device and a control method suitable for a full-sealing electric valve, the device comprises a switch module, a control module, a feedback module, a processing module and a driving module, wherein the switch module is used for selecting the working mode of the full-sealing electric valve, the control module is used for inputting a control command for controlling the full-sealing electric valve, the feedback module is used for acquiring the working state of the full-sealing electric valve and generating a feedback signal, the processing module is used for generating an action signal based on the priority sequence of a preset control command, the working mode and the logical judgment of the feedback signal, and the driving module is used for receiving the action signal and controlling the opening and closing state of the full-sealing electric valve through the action signal. The priority control device and the control method suitable for the fully-closed electric valve provided by the invention realize the priority selection function and the electric control function of the fully-closed electric valve at different control parts, and ensure the normal operation of a nuclear power device.
Description
Technical Field
The invention relates to the field of process control of nuclear power devices, in particular to a priority control device and a control method suitable for a fully-closed electric valve.
Background
In a process control system of a nuclear power plant, the control places of a full-closed electric valve comprise an automatic control instruction sent by an automatic control device, a manual control instruction of a backup disc, a system-level manual control instruction of an emergency shutdown disc and a protection control instruction sent by a protection system. The system-level manual control command and the protection control command only control the safety action of the fully-sealed electric valve and do not participate in non-safety related control, and the automatic control command and the manual control command control both the safety action and the non-safety action. The fully-closed electric valve has the following effects in the process flow: if the valve opening tends to be safe, the safe action indicates the valve opening action, and the unsafe action indicates the valve closing action; if the valve is closed and tends to be safe, the safe action refers to the valve closing action, and the non-safe action refers to the valve opening action. The fully-closed electric valve has a valve opening and closing instruction and a point closing instruction, particularly has a bypass closing limit protection function after the fully-closed electric valve is closed to a closing limit, and further closes the electric valve in a point moving mode so as to ensure that no leakage is generated after the fully-closed electric valve is closed, and the point closing function belongs to non-safety related control, so that only automatic control and manual control comprise the point closing control instruction.
Therefore, the fully-closed electric valve not only receives control commands of automatic, manual, system-level manual and protected safe actions and non-safe actions, but also receives control commands of automatic and manual point closing, wherein the priority order of each control place is as follows: the protection control instruction > system-level manual control instruction > automatic control instruction, and meanwhile, for different types of control instructions, the protection control instruction also has priority: the safety level action control instruction > the non-safety level action instruction > the point-close control instruction. Different modes have different priorities for controlling the fully-closed electric valve, and in order to ensure that a control command with high priority can not be influenced by a control command with low priority, a priority selection device is required to perform priority processing on all commands of the fully-closed electric valve.
At present, the fully-enclosed electric valve is not used in a land nuclear power plant and is only applied to a marine nuclear power plant, but the marine nuclear power plant does not have a device for multi-priority control of the fully-enclosed electric valve at present, and in order to realize priority control of the fully-enclosed electric valve, a priority control device and a priority control method are needed, so that priority control of full opening, full closing and point closing is realized.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a priority control device and a control method suitable for a full-seal electric valve, so that the priority selection function and the electric control function of the full-seal electric valve at different control parts are realized, and the normal operation of a nuclear power device is ensured.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
the switch module is used for selecting the working mode of the full-sealing electric valve;
the control module is used for inputting a control command for controlling the full-sealing electric valve;
the feedback module is used for acquiring the operation state of the fully-closed electric valve and generating a feedback signal according to the operation state of the fully-closed electric valve;
the processing module is used for identifying the working mode selected by the switch module, receiving the control instruction and the feedback signal, carrying out logic judgment on the control instruction based on the priority sequence of the preset control instruction, the working mode and the feedback signal, and generating action signals, wherein the action signals comprise priority action signals and non-priority action signals;
and the driving module is used for receiving the action signal and controlling the opening and closing state of the full-sealing electric valve through the action signal.
On the basis of the technical scheme, the working modes of the switch module comprise two modes of valve opening instruction priority and valve closing instruction priority.
On the basis of the technical scheme, the control module comprises a manual control point, an automatic control point, a protection control point and a system-level manual control point, wherein the manual control point is used for generating a manual priority control instruction, a manual non-priority control instruction and a manual point-closing control instruction, the automatic control point is used for generating an automatic priority control instruction, an automatic non-priority control instruction and an automatic point-closing control instruction, the protection control point is used for generating a protection priority control instruction, and the system-level manual control point is used for generating a system-level manual priority control instruction.
On the basis of the above technical solution, the feedback signal includes a priority operation state feedback signal and a non-priority operation state feedback signal.
On the basis of the technical scheme, when the working mode of the switch module is a valve opening instruction priority mode:
when the processing module receives any one of a manual priority control instruction, an automatic priority control instruction, a protection priority control instruction and a system-level manual priority control instruction, if a priority action state feedback signal is not received at the same time, the processing module sends a priority action signal, the driving module controls the full-sealing electric valve to perform priority action through the priority action signal, and if the processing module receives the priority action state feedback signal at the same time, the action signal is not output;
when the processing module receives any one of a manual non-priority control instruction and an automatic non-priority control instruction, if a non-priority action state feedback signal is not received at the same time, the processing module sends a non-priority action signal, the driving module controls the full-sealing electric valve to perform non-priority action through the non-priority action signal, and if the processing module receives the non-priority action state feedback signal at the same time, the signal output is not performed;
the processing module does not receive any one of a manual priority control instruction, an automatic priority control instruction, a protection priority control instruction, a system level manual priority control instruction, a manual non-priority control instruction and an automatic non-priority control instruction, but when a point-close instruction is received, if a non-priority action state feedback signal is received at the same time, the processing module sends a non-priority action signal, the driving module controls the full-sealed electric valve to perform non-priority action through the non-priority action signal, and if the processing module does not receive the non-priority action state feedback signal at the same time, the processing module does not output the instruction.
On the basis of the technical scheme, when the working mode of the switch module is a valve closing instruction priority mode:
when the processing module receives any one of a manual priority control instruction, an automatic priority control instruction, a protection priority control instruction and a system-level manual priority control instruction, if a priority action state feedback signal is not received at the same time, the processing module sends a priority action signal, the driving module controls the full-sealing electric valve to perform priority action through the priority action signal, and if the processing module receives the priority action state feedback signal at the same time, the signal output is not performed;
when the processing module receives any one of a manual non-priority control instruction and an automatic non-priority control instruction, the processing module sends a non-priority action signal, the driving module controls the full-sealing electric valve to perform non-priority action through the non-priority action signal, and if the processing module receives a non-priority action state feedback signal at the same time, no signal output is performed;
the processing module does not receive any one of a manual priority control instruction, an automatic priority control instruction, a protection priority control instruction, a system-level manual priority control instruction, a manual non-priority control instruction and an automatic non-priority control instruction, but when a point-close instruction is received, if a priority action state feedback signal is received at the same time, the processing module sends a priority action signal, the driving module controls the full-sealing electric valve to perform priority action through the priority action signal, and if the processing module does not receive the priority action state feedback signal at the same time, signal output is not performed.
On the basis of the technical scheme, the processing module comprises a plurality of OR gates and AND gate circuits, and the OR gates and the AND gate circuits are used for carrying out logic judgment on the control instructions according to the priority order of the preset control instructions, the working mode and the feedback signals and outputting corresponding action signals.
On the basis of the technical scheme, the priority control device further comprises an input interface module and an output interface module, wherein the input interface module is used for acquiring the working mode selected by the switch module, receiving the control instruction and the feedback signal, transmitting the working mode, the control instruction and the feedback signal to the processing module, and the output interface module is used for receiving the action signal of the processing module and transmitting the action signal to the driving module.
On the basis of the above technical solution, the priority control device further includes a display module, and the display module is configured to display the signal receiving conditions of the input interface module and the output interface module.
The invention also provides a control method of the priority control device suitable for the full-sealing electric valve, which comprises the following steps:
selecting a working mode of the full-sealing electric valve, inputting a control instruction for controlling the full-sealing electric valve, simultaneously acquiring an operation state of the full-sealing electric valve, and generating a feedback signal according to the operation state;
collecting the control instruction, the feedback signal and the working mode, and transmitting the control instruction, the feedback signal and the working mode to a processing module;
based on the priority sequence of a preset control instruction, the working mode and a feedback signal, carrying out logic judgment on the control instruction by using a processing module to generate action signals, wherein the action signals comprise a priority action signal and a non-priority action signal;
and outputting the action signal to a driving module, and controlling the opening and closing state of the full-sealing electric valve through the action signal.
Compared with the prior art, the invention has the advantages that:
(1) when control commands of a plurality of control places of a control module are received, priority logic judgment is carried out according to the priority sequence of the control commands of the preset requirements and a feedback signal generated according to the operation state of the fully-sealed electric valve under a switch mode selected by the priority control device, the control commands with high priority are ensured not to be influenced by other control commands with low priority, and the reliability and the safety of control of the fully-sealed electric valve are improved.
(2) The priority control device suitable for the fully-sealed electric valve provided by the invention realizes the function of priority control in an automatic control mode through the switch module, the feedback module and the processing module, improves the integral automation level, reduces the workload of an operator, and reduces the probability of human error.
Drawings
Fig. 1 is a structural diagram of a priority control device of a full-sealing electric valve in an embodiment of the invention;
fig. 2 is a circuit connection diagram of processing modules of a priority control device of a totally-enclosed electric valve according to an embodiment of the present invention.
In the figure: the system comprises a switch module 1, a control module 2, a feedback module 3, a processing module 4, a driving module 5, an input interface module 6, an output interface module 7 and a display module 8.
Detailed Description
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of the present invention provides a priority control apparatus suitable for a fully-enclosed electric valve, which sequentially includes a switch module 1, a control module 2, a feedback module 3, a processing module 4, and a driving module 5, where the switch module 1 is configured to select a working mode of the fully-enclosed electric valve, and mainly includes two modes, namely a valve-opening instruction priority mode and a valve-closing instruction priority mode; the control module 2 is used for inputting a control command for controlling the fully-closed electric valve, the control module 2 comprises a plurality of control places, and each control place can send a corresponding control command to control the opening and closing state of the fully-closed electric valve; the feedback module 3 is used for acquiring the operation state of the fully-closed electric valve after each time of the fully-closed electric valve performs the priority action, and generating a feedback signal according to the acquired operation state of the fully-closed electric valve, wherein the feedback signal comprises a priority action state feedback signal and a non-priority action state feedback signal; the processing module 4 is used for identifying the working mode selected by the switch module 1, receiving the control instruction and the feedback signal, and performing logic judgment on the control instruction based on the priority sequence of the preset control instruction, the selected working mode and the feedback signal, namely selecting the control instruction with high priority, ignoring the control instruction with low priority, and finally outputting a corresponding action signal, wherein the action signal comprises a priority action signal and a non-priority action signal; the driving module 5 is used for receiving the action signal and controlling the opening and closing state of the full-sealing electric valve through the received action signal, so that the purpose of controlling the priority of the full-sealing electric valve is achieved.
Referring to fig. 1, the priority control device further includes an input interface module 6 and an output interface module 7, one side of the input interface module 6 is sequentially connected to the switch module 1, the control module 2 and the feedback module 3, respectively, and the other side is connected to the processing module 4, the input interface module 6 is mainly used for collecting the working mode selected by the switch module 1, receiving the control instruction and the feedback signal respectively sent by the control module 2 and the feedback module 3, and then transmitting the working mode, the control instruction and the feedback signal to the processing module 4. One side of the output interface module 7 is connected with the processing module 4, and the other side is connected with the driving module 5, and is mainly used for receiving the action signal of the processing module 4, isolating the action signal and transmitting the action signal to the driving module 5. In addition, the priority control device further comprises a display module 8, and the display module 8 is respectively connected with the input interface module 6 and the output interface module 7, and is used for displaying the signal receiving conditions of the input interface module 6 and the output interface module 7. Specifically, the display module 8 includes a plurality of display lamps, and the display condition of the display lamps is used for displaying the receiving condition of each control instruction, feedback signal and working mode, so as to facilitate the viewing of the operator.
Further, the control module 2 includes four control points, which are a manual control point, an automatic control point, a protection control point, and a system-level manual control point. The manual control point and the automatic control point can send out a priority control instruction, a non-priority control instruction and a point-closing control instruction, and the protection control point and the system-level manual control point can only send out a priority control instruction. Specifically, the manual control point is used for generating a manual priority control instruction, a manual non-priority control instruction and a manual point closing control instruction, the automatic control point is used for generating an automatic priority control instruction, an automatic non-priority control instruction and an automatic point closing control instruction, the protection control point is used for generating a protection priority control instruction, and the system-level manual control point is used for generating a system-level manual priority control instruction.
When the working mode selected by the switch module 1 is that the valve opening instruction takes priority, the priority control instruction is a valve opening instruction, the priority action signal is a valve opening action signal, the priority action state feedback signal is a valve opening feedback signal, the non-priority instruction is a valve closing instruction, the non-priority action signal is a valve closing action signal, and the non-priority action state feedback signal is a valve closing feedback signal; when the operation mode selected by the switch module 1 is the priority of the valve closing instruction, the priority control instruction is the valve closing instruction, the priority action signal is the valve closing action signal, the priority action state feedback signal is the valve closing feedback signal, the non-priority instruction is the valve opening instruction, the non-priority action signal is the valve opening action signal, and the non-priority action state feedback signal is the valve opening feedback signal.
Specifically, when the operation mode of the switch module 1 is the valve-opening instruction priority mode:
when the processing module 4 receives any one of a manual priority control instruction, an automatic priority control instruction, a protection priority control instruction and a system-level manual priority control instruction, if a priority action state feedback signal is not received at the same time, the processing module 4 outputs a priority action signal and shields and outputs a non-priority action signal, the driving module 5 controls the full-sealed electric valve to perform priority action through the priority action signal, and if the processing module 4 receives the priority action state feedback signal at the same time, the action signal is not output; when the processing module 4 receives any one of a manual non-priority control instruction and an automatic non-priority control instruction, if a non-priority action state feedback signal is not received at the same time, the processing module 4 sends out a non-priority action signal and shields and outputs a priority action signal, the driving module 5 controls the full-sealing electric valve to perform non-priority action through the non-priority action signal, and if the processing module 4 receives the non-priority action state feedback signal at the same time, the signal output is not performed; the processing module 4 does not receive any one of a manual priority control instruction, an automatic priority control instruction, a protection priority control instruction, a system level manual priority control instruction, a manual non-priority control instruction and an automatic non-priority control instruction, but when a point-close instruction is received, if a non-priority action state feedback signal is received at the same time, the processing module 4 sends a non-priority action signal and shields and outputs the priority action signal, the driving module 5 controls the full-sealing electric valve to perform non-priority action through the non-priority action signal, and if the processing module 4 does not receive the non-priority action state feedback signal at the same time, the instruction is not output.
Specifically, when the working mode of the switch module 1 is the valve-closing instruction priority mode:
when the processing module 4 receives any one of a manual priority control instruction, an automatic priority control instruction, a protection priority control instruction and a system-level manual priority control instruction, if a priority action state feedback signal is not received at the same time, the processing module 4 outputs a priority action signal and shields and outputs a non-priority action signal, the driving module 5 controls the full-sealed electric valve to perform priority action through the priority action signal, and if the processing module 4 receives the priority action state feedback signal at the same time, the signal output is not performed; when the processing module 4 receives any one of a manual non-priority control instruction and an automatic non-priority control instruction, the processing module 4 outputs a non-priority action signal and shields the output of a priority action signal, the driving module 5 controls the full-closed electric valve to perform non-priority action through the non-priority action signal, and if the processing module 4 receives a non-priority action state feedback signal at the same time, the signal output is not performed; the processing module 4 does not receive any one of a manual priority control instruction, an automatic priority control instruction, a protection priority control instruction, a system-level manual priority control instruction, a manual non-priority control instruction and an automatic non-priority control instruction, but when the processing module receives a point-close instruction, if priority action state feedback signals are received at the same time, the processing module 4 outputs a priority action signal and shields and outputs a non-priority action signal, the driving module 5 controls the full-sealed electric valve to perform priority action through the priority action signal, and if the processing module 4 does not receive the priority action state feedback signals at the same time, the processing module does not output signals.
Further, the input interface module 6 is active at a high level when receiving the priority of the valve opening instruction, the control instruction and the feedback signal, and the input interface module 6 is active at a low level when receiving the priority of the valve closing instruction.
Referring to fig. 2, the processing module 4 includes a plurality of or gates and gate circuits, and the or gates and the and gate circuits are all configured to perform logic judgment on the control instruction according to the predetermined priority order, the working mode and the feedback signal of the control instruction, and output corresponding action signals. Specifically, the processing module 4 comprises 5 or gate circuits and 7 and gate circuits, wherein the or gate circuits 1, 2 and 3 form a first level, are directly connected with the control module 2 and are connected with the control command in parallel; the AND gate circuits 4, 5, 6, 7 and 8 form a second level and are respectively connected with the feedback module 3 and the circuit positioned at the first level; and-gate circuits 9 and 10 constitute a third level connected to and-gate circuits 5, 7 and 8, respectively, located at the second level; or gates 11 and 12 constitute a fourth hierarchy and are connected to circuits at the second and third hierarchies, respectively.
Specifically, when the or gate circuit 1 receives any one of the high level signals of the manual priority control instruction, the automatic priority control instruction, the protection priority control instruction and the system-level manual priority control instruction, the or gate circuit outputs the priority control instruction;
when the OR gate circuit 2 receives any one path of high level signal in the manual non-priority control instruction and the automatic non-priority control instruction, the non-priority control instruction is output;
when the OR gate circuit 3 receives any one path of high level signal in the manual point-closing control instruction and the automatic point-closing control instruction, the point-closing control instruction is output;
when the and circuit 4 does not receive the priority action state feedback signal, that is, the priority action state feedback signal is at a low level, and the priority control instruction output by the or gate circuit 1 is at a high level, the and circuit 4 outputs the priority control instruction;
when the working mode selected by the switch module 1 is in the valve-closing instruction priority position, namely the switch module 1 is at a low level, and the and circuit 5 receives the priority action state feedback signal, namely the priority action state feedback signal is at a high level, the and circuit 5 outputs a point-closing permission instruction;
when the and circuit 6 does not receive the non-priority operation state feedback signal, that is, the non-priority operation state feedback signal is at a low level, and the priority control instruction output by the or gate circuit 1 is at a low level, and when the non-priority control instruction output by the or gate circuit 2 is at a high level, the and circuit 6 outputs the non-priority control instruction;
when the working mode selected by the switch module 1 is in the valve opening instruction priority position, namely the switch module 1 is at a high level, and the and circuit 7 receives the non-priority action state feedback signal, namely the non-priority action state feedback signal is at the high level, the and circuit 7 outputs a point closing permission instruction;
when the priority control command output by the or gate circuit 1 is at a low level, the non-priority control command output by the or gate circuit 2 is at a low level, and the point-off control command output by the or gate circuit 3 is at a high level, the and gate circuit 8 outputs a point-off operation command;
when the point-off permission instruction output by the and circuit 5 is at a high level and the point-off action instruction output by the and circuit 8 is also at a high level, the and circuit 9 outputs a point-off instruction;
when the point-off permission instruction output by the and circuit 7 is at a high level and the point-off action instruction output by the and circuit 8 is also at a high level, the and circuit 10 outputs a point-off instruction;
when the priority control command output from the and circuit 4 is at a high level and the turn-off command output from the and circuit 9 is at a high level, the or circuit 11 outputs a priority operation signal;
when the non-priority control command output from the and circuit 6 is at a high level and the dot-off command output from the and circuit 10 is at a high level, the or circuit 12 outputs a non-priority operation signal.
Specifically, the driving module 5 receives an action signal output by the or gate circuit 11 or 12 located at the fourth level, and controls the actions of components such as a relay and a contactor in the module correspondingly through the action signal, so as to control the open/close state of the fully-enclosed electric valve, realize the function of controlling the priority of the fully-enclosed electric valve in an automatic control mode, and improve the overall automation level. The control module 2 comprises control equipment such as an automatic control device, a backup disc, an emergency shutdown platform, a reactor protection device and the like, wherein the automatic control device is an automatic control point and sends out an automatic control instruction, the backup disc is a manual control point and sends out a manual control instruction, the emergency shutdown platform is a system-level manual control point and sends out a system-level manual control instruction, and the protection device is a protection control point and sends out a protection control instruction. The feedback module 3 is mainly a limit switch of a full-closed electric valve.
Furthermore, the signals received and output by the input interface module 6 and the output interface module 7 can adopt passive signals and active signals, and the signals are isolated from each other and do not interfere with each other.
Furthermore, the priority control device adopts a plug-in design mode, and the size of the plug-in is not more than 30mm multiplied by 233mm multiplied by 160 mm.
The priority control device performs priority logic judgment according to the priority sequence of the control commands of the preset requirements and the feedback signal generated according to the working state of the full-sealing electric valve under the switching mode selected by the priority control device, ensures that the control commands with high priority are not influenced by other control commands with low priority, and improves the reliability and the safety of the control of the full-sealing electric valve. In addition, the function of priority control is realized in an automatic control mode through the switch module, the feedback module and the processing module, the integral automation level is improved, the workload of an operator is reduced, and the probability of human error is reduced.
The invention also provides a control method of the priority control device suitable for the full-sealing electric valve, which comprises the following steps: firstly, selecting a working mode of the full-sealing electric valve, inputting a control instruction for controlling the full-sealing electric valve, simultaneously acquiring the operating state of the full-sealing electric valve, and generating a feedback signal according to the operating state; then, collecting a control instruction, a feedback signal and a working mode, and transmitting the control instruction, the feedback signal and the working mode to a processing module; based on the priority sequence, the working mode and the feedback signal of the preset control instruction, the processing module is used for carrying out logic judgment on the control instruction to generate action signals, wherein the action signals comprise priority action signals and non-priority action signals; and finally, outputting the action signal to a driving module, and controlling the opening and closing state of the full-sealing electric valve through the action signal.
Specifically, when the operation mode of the switch module 1 is selected as the valve-opening instruction priority mode:
when the processing module 4 receives any one of the manual priority control instruction, the automatic priority control instruction, the protection priority control instruction and the system-level manual priority control instruction, if a priority action state feedback signal is not received at the same time, the processing module 4 outputs a priority action signal and shields and outputs a non-priority action signal, the driving module 5 controls the full-sealed electric valve to perform priority action through the priority action signal, and if the processing module 4 receives the priority action state feedback signal at the same time, the action signal is not output.
When the processing module 4 receives any one of the manual non-priority control instruction and the automatic non-priority control instruction, if the non-priority action state feedback signal is not received at the same time, the processing module 4 sends the non-priority action signal and shields and outputs the priority action signal, the driving module 5 controls the full-sealing electric valve to perform non-priority action through the non-priority action signal, and if the processing module 4 receives the non-priority action state feedback signal at the same time, the signal output is not performed.
The processing module 4 does not receive any one of a manual priority control instruction, an automatic priority control instruction, a protection priority control instruction, a system level manual priority control instruction, a manual non-priority control instruction and an automatic non-priority control instruction, but when a point-close instruction is received, if a non-priority action state feedback signal is received at the same time, the processing module 4 sends a non-priority action signal and shields and outputs the priority action signal, the driving module 5 controls the full-sealing electric valve to perform non-priority action through the non-priority action signal, and if the processing module 4 does not receive the non-priority action state feedback signal at the same time, the instruction is not output.
When the working mode of the switch module 1 is the valve closing instruction priority mode:
when the processing module 4 receives any one of the manual priority control instruction, the automatic priority control instruction, the protection priority control instruction and the system-level manual priority control instruction, if a priority action state feedback signal is not received at the same time, the processing module 4 outputs a priority action signal and shields and outputs a non-priority action signal, the driving module 5 controls the full-sealed electric valve to perform priority action through the priority action signal, and if the processing module 4 receives the priority action state feedback signal at the same time, the signal output is not performed.
When the processing module 4 receives any one of the manual non-priority control instruction and the automatic non-priority control instruction, the processing module 4 outputs a non-priority action signal and shields the output of the priority action signal, the driving module 5 controls the full-closed electric valve to perform non-priority action through the non-priority action signal, and if the processing module 4 simultaneously receives a non-priority action state feedback signal, the signal is not output.
The processing module 4 does not receive any one of a manual priority control instruction, an automatic priority control instruction, a protection priority control instruction, a system-level manual priority control instruction, a manual non-priority control instruction and an automatic non-priority control instruction, but when the processing module receives a point-close instruction, if priority action state feedback signals are received at the same time, the processing module 4 outputs a priority action signal and shields and outputs a non-priority action signal, the driving module 5 controls the full-sealed electric valve to perform priority action through the priority action signal, and if the processing module 4 does not receive the priority action state feedback signals at the same time, the processing module does not output signals.
When the input interface module 6 and the output interface module 7 receive different signal inputs or send out a priority action signal or a non-priority action signal, the display lamps matched with the different types of signals are lightened to display the receiving and sending conditions of the signals.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone with the teaching of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as the present invention, are within the protection scope.
Claims (6)
1. A priority control apparatus for a fully-enclosed electrically operated valve, comprising:
the switch module (1) is used for selecting the working mode of the full-sealing electric valve, and the working mode of the switch module (1) comprises two modes of valve opening instruction priority and valve closing instruction priority;
the control module (2) is used for inputting a control instruction for controlling the fully-enclosed electric valve, the control module (2) comprises a manual control point, an automatic control point, a protection control point and a system-level manual control point, the manual control point is used for generating a manual priority control instruction, a manual non-priority control instruction and a manual point-closing control instruction, the automatic control point is used for generating an automatic priority control instruction, an automatic non-priority control instruction and an automatic point-closing control instruction, the protection control point is used for generating a protection priority control instruction, and the system-level manual control point is used for generating a system-level manual priority control instruction;
a feedback module (3) for acquiring the operation state of the full-sealing electric valve and generating a feedback signal from the operation state of the full-sealing electric valve, wherein the feedback signal comprises a priority action state feedback signal and a non-priority action state feedback signal;
the processing module (4) is used for identifying the working mode selected by the switch module (1), receiving the control instruction and a feedback signal, carrying out logic judgment on the control instruction based on the priority order of the preset control instruction, the working mode and the feedback signal, and generating action signals, wherein the action signals comprise priority action signals and non-priority action signals;
the driving module (5) is used for receiving the action signal and controlling the opening and closing state of the full-sealing electric valve through the action signal; wherein,
when the working mode of the switch module (1) is a valve opening instruction priority mode:
when the processing module (4) receives any one of a manual priority control instruction, an automatic priority control instruction, a protection priority control instruction and a system-level manual priority control instruction, if a priority action state feedback signal is not received at the same time, the processing module (4) sends a priority action signal, the driving module (5) controls the full-sealed electric valve to perform priority action through the priority action signal, and if the processing module (4) receives the priority action state feedback signal at the same time, the action signal is not output;
when the processing module (4) receives any one of a manual non-priority control instruction and an automatic non-priority control instruction, if a non-priority action state feedback signal is not received at the same time, the processing module (4) sends a non-priority action signal, the driving module (5) controls the full-sealing electric valve to perform non-priority action through the non-priority action signal, and if the processing module (4) receives the non-priority action state feedback signal at the same time, the signal output is not performed;
the processing module (4) does not receive any one of a manual priority control instruction, an automatic priority control instruction, a protection priority control instruction, a system-level manual priority control instruction, a manual non-priority control instruction and an automatic non-priority control instruction, but when a point-close instruction is received, if a non-priority action state feedback signal is received at the same time, the processing module (4) sends a non-priority action signal, the driving module (5) controls the full-sealed electric valve to perform non-priority action through the non-priority action signal, and if the processing module (4) does not receive the non-priority action state feedback signal at the same time, no instruction output is performed.
2. The priority control device for the full close electric valve as claimed in claim 1, wherein when the operation mode of the switch module (1) is the valve close command priority mode:
when the processing module (4) receives any one of a manual priority control instruction, an automatic priority control instruction, a protection priority control instruction and a system-level manual priority control instruction, if a priority action state feedback signal is not received at the same time, the processing module (4) sends a priority action signal, the driving module (5) controls the full-sealed electric valve to perform priority action through the priority action signal, and if the processing module (4) receives the priority action state feedback signal at the same time, no signal is output;
when the processing module (4) receives any one of a manual non-priority control instruction and an automatic non-priority control instruction, the processing module (4) sends a non-priority action signal, the driving module (5) controls the full-sealing electric valve to perform non-priority action through the non-priority action signal, and if the processing module (4) simultaneously receives a non-priority action state feedback signal, no signal output is performed;
the processing module (4) does not receive any one of a manual priority control instruction, an automatic priority control instruction, a protection priority control instruction, a system-level manual priority control instruction, a manual non-priority control instruction and an automatic non-priority control instruction, but when a point-close instruction is received, if a priority action state feedback signal is received at the same time, the processing module (4) sends a priority action signal, the driving module (5) controls the full-sealing electric valve to perform priority action through the priority action signal, and if the processing module (4) does not receive the priority action state feedback signal at the same time, the signal is not output.
3. A priority control device for a fully-enclosed electrically operated valve as claimed in claim 2, wherein: the processing module (4) comprises a plurality of OR gates and AND gate circuits, and the OR gates and the AND gate circuits are used for carrying out logic judgment on the control instructions according to the preset priority order of the control instructions, the working modes and the feedback signals and outputting corresponding action signals.
4. A priority control device for a fully-enclosed electrically operated valve as claimed in claim 1, wherein: the priority control device further comprises an input interface module (6) and an output interface module (7), wherein the input interface module (6) is used for collecting the working mode selected by the switch module (1), receiving the control command and the feedback signal, transmitting the working mode, the control command and the feedback signal to the processing module (4), and the output interface module (7) is used for receiving the action signal of the processing module (4) and transmitting the action signal to the driving module (5).
5. The priority control device for the fully-enclosed electric valve as claimed in claim 4, wherein: the priority control device also comprises a display module (8), and the display module (8) is used for displaying the signal receiving conditions of the input interface module (6) and the output interface module (7).
6. A method for controlling a priority control device for a full shut electric valve as claimed in claim 1, comprising the steps of:
selecting a working mode of the full-sealing electric valve, inputting a control instruction for controlling the full-sealing electric valve, simultaneously acquiring an operation state of the full-sealing electric valve, and generating a feedback signal according to the operation state;
collecting the control instruction, the feedback signal and the working mode, and transmitting the control instruction, the feedback signal and the working mode to a processing module;
based on the priority sequence of a preset control instruction, the working mode and a feedback signal, carrying out logic judgment on the control instruction by using a processing module to generate action signals, wherein the action signals comprise a priority action signal and a non-priority action signal;
and outputting the action signal to a driving module, and controlling the opening and closing state of the full-sealing electric valve through the action signal.
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