CN201060406Y - Dedicated logic control module for inching electric valves/baffles - Google Patents

Abstract

The utility model relates to an exclusive logic control module used for a point-action electrically operated valve / baffle. The utility model is characterized in that the logic control module consists of an input order processing logic circuit (1), a failure judging and processing logic circuit (2), a state processing logic circuit (3), and an output order generating logic circuit (4); the output terminal of the input order processing logic circuit (1) is connected with the input terminal of the output order generating logic circuit (4); the output terminal of the state processing logic circuit (3) is connected with one input terminal of the output order generating circuit (4) and a man / machine interface; the input terminal of the failure judging and processing logic circuit (2) is connected with the output terminal of the state processing logic circuit (3); the output terminal of the output order generating logic circuit (4) is connected with the output terminal of a controlled device. The utility model has the advantages that the standardization level is high, the interface is distinct, the programme is simplified, the expansion is convenient, and the mutual influence is small. The logic control module is suitable for various D C S systems and the rear stage standard logic control of a nuclear power station.

Description

Dedicated logic control module for inching electric valves/baffles

technical field

The utility model relates to a special logic control module for inching electric valves/baffle plates, which is suitable for the automatic logic control of the rear-stage driving mechanism of nuclear power plants. It belongs to the technical field of nuclear power plant electrical equipment.

Background technique

At present, domestic 1000MW nuclear power units are generally imported from abroad, and their logic control circuits are designed by foreign companies. The automatic logic control device of the circuit is composed of logic elements such as AND gate, OR gate, NOT gate, and memory to realize various logic control functions. However, for the design of the logic control part of the pump/fan and other post-level drive equipment, only some basic logic elements are set in the overall logic control circuit. These basic logic units adopt decentralized non-standardized design and are not targeted. It is integrated with various process logic control functions, such as permission conditions, protection functions, automatic control, etc., and does not form an independent, standardized, and standard logic function block. Therefore, it is difficult to distinguish which logic is the control logic outside the driver-level device and which is the inherent logic inside the driver-level device, making the logic control interface unclear, and there are defects such as complicated programming, poor portability, and inconvenient use. This brings difficulties to the realization of the digital control system DCS and the subsequent operation and maintenance.

Utility model content

The purpose of this utility model is to overcome the shortcomings of the existing post-stage drive control logic circuit as a decentralized structure, unclear interface and poor portability, and to provide an independent and easy-to-port inching electric valve/baffle special Logic control module.

The purpose of this utility model can be achieved through the following measures:

The special logic control module for inching electric valves/baffles has the following structural features: it is composed of an input command processing logic circuit, a fault judgment and processing logic circuit, a state processing logic circuit and an output command generation logic circuit; the input of the input command processing logic circuit The terminal is connected to the signal input port connected to external information, and the signal output terminal is connected to a signal input terminal of the output command generation logic circuit; the input terminal of the state processing logic circuit is connected to the state feedback signal of the field controlled equipment, and the signal output of the state processing logic circuit Terminals are respectively connected to an input end of the fault judgment and processing logic circuit, an input end of the output command generation logic circuit and the human/machine interface interface HMI; the signal input end of the fault judgment and processing logic circuit is connected to the output end of the state processing logic circuit, The output terminal of the output instruction generation logic circuit is connected with the output port connected with the field controlled equipment.

The purpose of this utility model can also be achieved by taking the following measures:

One embodiment of the present invention is: the input command processing logic includes RS flip-flop B1, AND gates C1-C6, OR gates D1-D4, and NOT gate E1; the S input terminal of RS flip-flop B1 is connected to the automatic button A1 and R input terminals are connected to manual button A2, its inverting output terminal is connected to one input terminal of AND gates C1 and C2, its output terminal is connected to AUTO port A16 and one input terminal of AND gates C3 and C4; the AND gate C1 One input terminal is connected with the open button A3, and one input terminal of the gate C2 is connected with the close button A4; one input terminal of the gates C3 and C4 is connected with the automatic opening/closing signal input port A5, and the output terminals of the gates C1 and C3 One input terminal of AND gate C5 is connected through OR gate D1; the output terminals of AND gate C2 and C4 are respectively connected with one input terminal of AND gate C6 through OR gate D2, and the output terminal of AND gate C5 is connected through OR gate D3 to output instruction generation An input end of the logic circuit, the output end of the AND gate C6 is connected to an input end of the output instruction generating logic circuit through the OR gate D4; each of the AND gates C5 and C6 has an input end connected to allow opening/closing signal input port A7, and the AND gate C5 has an input terminal connected to the protection opening/closing signal input terminal A6 through the NOT gate E1; each of the OR gates D3 and D4 has an input terminal connected to the protection opening/closing input signal port A6; the automatic button A1 and the manual button A2 , the open button A3 and the close button A4 are set in the controller VDU.

A kind of embodiment of the present utility model is: described fault judgment and processing logic circuit is made of AND gate C7, OR gate D5 and delayer F1; Two input ends of AND gate C7 are connected open/close state signal input A8. The output terminal is connected to an input terminal of the OR gate D5 through the delayer F1, the output terminal of the OR gate D5 is connected to the fault signal output port A11, and the other input terminal of D5 is connected to the MCC fault signal output terminal A13; the delayer F1 The output terminal is connected to the double "1" fault signal output terminal A12.

An embodiment of the present utility model is: the state processing logic circuit is composed of AND gates C8, C9 and NOT gates E2, E3; the opening/closing state signal input terminal A8 is connected to the state detection terminal of the electric door, and the AND gate C8 , The two input terminals of C9 are respectively connected to the open/close state signal input terminal A8 and connected to the open/close state signal input terminal A8 through the NOT gate E2, E3, and the output terminal of the AND gate C8 is connected to the fully open signal output terminal A10 and the OR gate An input terminal of D6 is connected, and an output terminal of the AND gate C9 is connected with the full-close signal output terminal A9 and an input terminal of the OR gate D7.

An embodiment of the present utility model is: the output instruction generating logic circuit is composed of OR gates D6~D7, RS flip-flops B2~B3, NOT gates E4~E5 and thermal relays G1~G1; The four input terminals are respectively connected to the remote control signal input terminal A17, the signal output terminal of the AND gate C8, the MCC fault signal output terminal A13, the output terminal of the OR gate D4, and the four input terminals of the OR gate D6 are respectively connected to the remote control signal input Terminal A17, the signal output terminal of the AND gate C9, the MCC fault signal output terminal A13, the output terminal of the OR gate D3; the output terminal of the OR gate D3 is connected to the fifth input terminal of the OR gate D6 through the NOT gate E2 and the thermal relay G1, The output terminal of the OR gate D4 is connected to the fifth input terminal of the OR gate D7 through the NOT gate E3 and the thermal relay G2; the output terminals of the OR gate D6 and D7 are respectively connected to the R input terminals of the RS flip-flops B2 and B3, and the RS flip-flop B2 The S input terminals of , B3 are respectively connected with the output terminals of OR gates D3, D4; the output terminals of RS flip-flops B2, B3 are connected with the electric door opening/closing control signal output terminal A14.

The beneficial effects of the utility model are:

The utility model standardizes the typical and inherent control mode and relatively fixed action logic of fully open/full close electric valves/baffles and forms a drive level standard logic block, which has the following beneficial effects: 1. High degree of standardization, control The interface is relatively clear; 2. The control logic programming work is simplified. The main work is to design variable logic and do a good job in the interface work of standard logic blocks. 3. The control logic is easy to modify and expand, and the mutual influence is small; 4. It is applicable to different hardware structures. Various DCS systems.

Description of drawings

Fig. 1 is a structural block diagram of the utility model embodiment.

Fig. 2 is the work flowchart of the utility model embodiment.

Fig. 3 is an electrical schematic diagram of a specific embodiment of the present invention.

Detailed ways

Specific embodiment 1:

With reference to Fig. 1, present embodiment is made of input instruction processing logic circuit 1, fault judgment and processing logic circuit 2, state processing logic circuit 3 and output instruction generation logic circuit 4; The signal input port is connected, and the signal output end is connected to a signal input end of the output command generation logic circuit 4; the input end of the state processing logic circuit 3 is connected to the state feedback signal of the field controlled equipment, and the signal output ends of the state processing logic circuit 3 are respectively Connect an input end of the fault judgment and processing logic circuit 2, an input end of the output instruction generation logic circuit 4, and the human/machine interface interface HMI. Three signal input ends of the fault judgment and processing logic circuit 2 are respectively input into the instruction processing logic circuit 1 The output end of the state processing logic circuit 3 and the output end of the output instruction generation logic circuit 4, the output end of the fault judgment and processing logic circuit 2 are connected to the output port connected to the field controlled equipment.

Referring to Fig. 3, the input instruction processing logic 1 includes RS flip-flop B1, AND gates C1-C6, OR gates D1-D4 and NOT gate E1; the S input terminal of RS flip-flop B1 is connected with automatic button A1, R input terminal Connect the manual button A2, its inverting output terminal is connected to one input terminal of AND gate C1 and C2, its output terminal is connected to AUTO port A16 and one input terminal of AND gate C3, C4; one input terminal of AND gate C1 is connected to the open The button A3 is connected, and one input terminal of the door C2 is connected with the closing button A4; one input terminal of the gates C3 and C4 is connected with the automatic opening/closing signal input port A5, C3 inputs the automatic opening command AOP, and C4 inputs the automatic closing command ACL , the output terminals of AND gates C1 and C3 are respectively connected to an input terminal of AND gate C5 through OR gate D1; the output terminals of AND gates C2 and C4 are respectively connected to an input terminal of AND gate C6 through OR gate D2, and the output of AND gate C5 The end is connected to an input end of the output instruction generating logic circuit 4 through the OR gate D3, and the output end of the AND gate C6 is connected to an input end of the output instruction generating logic circuit 4 through the OR gate D4; the AND gates C5 and C6 each have an input end connection The opening/closing signal input port A7 is allowed, wherein C5 and C6 respectively input the permitting opening instruction PEOP and the permitting closing instruction PECL; an input terminal of the AND gate C5 is connected with the protection opening/closing signal input terminal A6 through the NOT gate E1; or gate Each of D3 and D4 has an input terminal connected to the protection opening/closing input signal port A6, wherein D3 and D4 respectively input the protection opening command POP and the protection closing command PCL; the automatic button A1, the manual button A2, the opening button A3, A close button A4 is provided in the controller VDU.

The fault judgment and processing logic circuit 2 is composed of an AND gate C7, an OR gate D5 and a delayer F1; the two input terminals of the AND gate C7 are connected to the open/close state signal input terminal A8, and the output terminal passes through the delayer F1 Connect one input terminal of OR gate D5, the output terminal of OR gate D5 is connected to fault signal output port A11, the other input terminal of D5 is connected to MCC fault signal output terminal A13; the output terminal of delayer F1 is connected to double "1" fault signal Output A12. The fault signal output terminal A11, the MCC fault signal output terminal A13, and the double “1” fault signal output terminal A12 can be connected to a signal light or connected to a man-machine interface HMI display.

The state processing logic 3 is composed of AND gates C8, C9 and NOT gates E2, E3; the opening/closing state signal input terminal A8 is connected to the state detection terminal of the electric door, and the two input terminals of the AND gates C8 and C9 are respectively connected to open The /closed state signal input terminal A8 is connected to the open/closed state signal input terminal A8 through the NOT gates E2 and E3, the output terminal of the AND gate C8 is connected to the fully open signal output terminal A10 and an input terminal of the OR gate D6, and the AND gate C9 The output terminal of the terminal is connected to the full-off signal output terminal A9 and an input terminal of the OR gate D7. The fully open signal output terminal A10 and the fully closed signal output terminal A9 can be connected to a signal light or connected to a human-machine interface HMI display.

The output command generation logic 4 is composed of OR gates D6-D7, RS flip-flops B2-B3, NOT gates E4-E5 and thermal relays G1-G1; the four input ends of the OR gate D6 are respectively connected to the remote control signal input The terminal A17, the signal output terminal of the AND gate C8, the MCC fault signal output terminal A13, the output terminal of the OR gate D4, and the four input terminals of the OR gate D6 are respectively connected to the remote control signal input terminal A17 and the signal output terminal of the AND gate C9 , MCC fault signal output terminal A13, the output terminal of the OR gate D3; the output terminal of the OR gate D3 is connected to the fifth input terminal of the OR gate D6 through the NOT gate E2, and the thermal relay G1, and the output terminal of the OR gate D4 is connected through the NOT gate E3 1. The thermal relay G2 is connected to the fifth input terminal of the OR gate D7; the output terminals of the OR gates D6 and D7 are respectively connected to the R input terminals of the RS flip-flops B2 and B3, and the S input terminals of the RS flip-flops B2 and B3 are respectively connected to the OR gate The output terminals of D3 and D4 are connected; the output terminals of RS flip-flops B2 and B3 are connected with the electric door opening/closing control signal output terminal A14. The output terminals of RS flip-flops B2 and B3 are connected to the electric door opening/closing control signal output terminal A14, B2 outputs the opening command OD, and jog controls the opening of the electro-pneumatic valve, and B3 outputs the closing command CD, and jog controls the closing of the electric valve . The remote control input terminal A17 is displayed by the signal light A16.

Purposes of the present utility model:

1. Realize the formation of monitoring instructions. 2. Provide information for more advanced functional modules and operators. 3. It is an interface between higher-level control logic (including function group, sequential control step, HMI, etc.) and field devices.

Referring to Fig. 2, the operating principle of the present utility model is:

Input command processing logic circuit 1 performs logical processing on external field signals, other equipment contact signals, backup manual signals, etc., determines the priority level of each command, and forms a control command to the equipment level. This embodiment sets the priority of the protection input command The highest level, followed by allow command, automatic input command, button input command of the controller.

The fault judgment and processing logic circuit 2 controls the specific action process of the controlled device for the device-level control command sent by the command processing logic for each controlled device control mode, and finally converts it into a specific command signal that the controlled device can accept , and judge the correctness and error of the action process through the feedback signal of the controlled device. Such as sending a long pulse or a short pulse command signal, whether the action process is in progress or has been completed, whether to cancel or maintain the control command after the action is completed, and other logic.

The state processing logic circuit 3 processes the state signal sent by the input command processing logic circuit and the fault judgment and processing logic circuit 2, and uses display processing methods such as color changes and text instructions to display the information for operation on the HMI (human-machine interface). Personnel provides device health at the device level.

The output instruction generation logic circuit 4 controls the equipment-level control instructions sent by the input instruction processing logic circuit 1 according to the results sent by the fault judgment and processing logic circuit 2 and the status processing logic circuit 3 for each controlled device control mode. The specific action process of the controlled device is finally converted into a specific command signal that the pneumatic valve of the controlled device can accept, and the command to open/close the electric valve is output from the A14 port.

This embodiment is suitable for adjustable electric doors or actuators.

Claims (5)

1. crawl electrically operated valve/baffle plate special logic control module is characterized in that: be made of input instruction processor logic (1), fault judgement and processor logic (2), state processing logical circuit (3) and output order formation logic circuit (4); The signal input part that the input end of input instruction processor logic (1) is communicated with the signal input port that is connected external information, signal output part connects output order formation logic circuit (4); The input end of state processing logical circuit (3) connects the feedback of status signal of on-the-spot controlled device, and the signal output part of state processing logical circuit (3) connects the input end and the people/machine interface (HMI) of an input end, the output order formation logic circuit (4) of fault judgement and processor logic (2) respectively; The output terminal of the signal input part connection status processor logic (3) of fault judgement and processor logic (2), the output terminal of output order formation logic circuit (4) connects with the output port that is connected on-the-spot controlled device.

2. crawl electrically operated valve according to claim 1/baffle plate special logic control module is characterized in that: described input instruction processing logic (1) comprise rest-set flip-flop B1, with door C1～C6 or door D1～D4 and not gate E1; The S input end of rest-set flip-flop B1 connects that automatic button A1, R input end connect hand push button A2, its reversed-phase output connects with an input end, its output terminal of door C1 and C2 and is connected to AUTO port A16 and be connected and the input end of C3, C4; With input end of door C1 with open button A3 and be connected, be connected with X button A4 with the input end of door C2; Is connected with open/closed signal input port A5 automatically with input end of door C3, C4, with the output terminal of door C1, C3 respectively by or door D1 is connected and the input end of a C5; With the output terminal of door C2, C4 respectively by or door D2 is connected a input end with a C6, with the output terminal of door C5 by or door D3 is connected an input end of output order formation logic circuit (4), with the output terminal of door C6 by or a D4 be connected an input end of output order formation logic circuit (4); Respectively having an input end to be connected with door C5, C6 allows open/closed signal input port A7, has an input end to be connected with protection open/closed signal input end A6 by not gate E1 with door C5; Or door D3, D4 respectively have an input end to be connected with protection opening/closing input signal port A6; Described automatic button A1, hand push button A2, open button A3, X button A4 is arranged among the controller VDU.

3. crawl electrically operated valve according to claim 1/baffle plate special logic control module is characterized in that: described fault judgement and processor logic (2) are by constituting with door C7 or door D5 and chronotron F1; Be connected with two input ends of door C7 that opening/closing status signal input end A8, output terminal connect by chronotron F1 or the input end of door D5, or the output terminal of door D5 connects fault-signal output port A11, another input end connection MCC fault-signal output terminals A 13 of D5; The output terminal of chronotron F1 connects two " 1 " fault-signal output terminals A 12.

4. crawl electrically operated valve according to claim 1/baffle plate special logic control module is characterized in that: described state processing logic (3) is by constituting with door C8, C9 and not gate E2, E3; Opening/closing status signal input end A8 connects the state-detection end of Electrically operated gate, be connected opening/closing status signal input end A8 respectively and connect opening/closing status signal input end A8 with two input ends of door C8, C9 by not gate E2, E3, with the output terminal of door C8 and standard-sized sheet signal output part A10 with or the input end of door D6 is connected, is connected with the output terminal of door C9 complete shut-down signal output part A9 with or the input end of a D7.

5. crawl electrically operated valve according to claim 1/baffle plate special logic control module is characterized in that: described output order formation logic (4) by or door D6～D7, rest-set flip-flop B2～B3, not gate E4～E5 and electrothermal relay G1～G1 constitute; Or four input ends of door D6 be connected to respectively distant place signal input end A17, with the signal output part, MCC fault-signal output terminals A 13 of door C8 or the output terminal of door D4, or four input ends of door D6 are connected to the output terminal of distant place signal input end A17, the signal output part with door C9, MCC fault-signal output terminals A 13 or door D3 respectively; Or the output terminal of door D3 connects by not gate E2, electrothermal relay G1 or the 5th input end of door D6, or the output terminal of door D4 connects by not gate E3, electrothermal relay G2 or the 5th input end of door D7; Or the output terminal of door D6, D7 connects the R input end of rest-set flip-flop B2, B3 respectively, the S input end of rest-set flip-flop B2, B3 respectively with or the output terminal of door D3, D4 be connected; The output terminal of rest-set flip-flop B2, B3 connects Electrically operated gate opening/closing control signal output ends A14.

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