CN109839862B - Ocean nuclear power platform electromagnetic valve control circuit, control device and control method - Google Patents
Ocean nuclear power platform electromagnetic valve control circuit, control device and control method Download PDFInfo
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- CN109839862B CN109839862B CN201711223444.1A CN201711223444A CN109839862B CN 109839862 B CN109839862 B CN 109839862B CN 201711223444 A CN201711223444 A CN 201711223444A CN 109839862 B CN109839862 B CN 109839862B
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Abstract
The invention discloses an electromagnetic valve control circuit of a ocean nuclear power platform, which relates to the field of automatic control and comprises a contactor, a first circuit and a second circuit, wherein the first circuit comprises an electromagnetic valve, one end of the electromagnetic valve is connected with a power supply system, and the other end of the electromagnetic valve is connected with the power supply system after being connected with a normally open contact of the contactor in series; the second circuit comprises a first switch, a first relay K1, a second relay K2 and a third relay K3, wherein the first switch is provided with a first contact and a second contact, the first contact is connected with a coil of a contactor in series, the second contact is sequentially connected with a parallel branch and a coil of the contactor in series, the parallel branch is formed by connecting the first branch and the second branch in parallel, the first branch comprises a normally open contact of the second relay K2 and a normally open contact of the third relay K3 which are connected in series, and the second branch comprises a normally open contact of the first relay K1 and a normally closed contact of the third relay K3 which are connected in series. The electromagnetic valve control circuit provided by the invention has the advantages of strong anti-interference capability, good stability and wide application range.
Description
Technical Field
The invention relates to the field of nuclear power device instruments and control, in particular to an electromagnetic valve control circuit, a control device and a control method of an ocean nuclear power platform.
Background
For safety reasons, a plurality of process control systems are usually arranged on the ocean nuclear power platform, various operations of the platform are correspondingly controlled through electromagnetic valves, the common process control systems comprise a backup disc, a main control console, an automatic control cabinet and the like, the backup disc is mainly used for controlling the platform in an emergency, the main control console is used for controlling the platform to operate in a manual intervention mode, the automatic control cabinet is used for controlling the platform through the control cabinet under the condition that no person directly participates in, the priority of the backup disc is higher than that of the main control console, and the priority of the main control console is higher than that of the automatic control cabinet so as to better control the electromagnetic valves. Therefore, in actual use, priority selection control is required for various types of process control systems.
In the prior art, embedded platform development is adopted, the priority of a process control system is controlled by directly receiving a bus instruction or a switch operation instruction, and as disclosed in patent number CN200910188851.2, the electromagnetic valve control device comprises an instruction processing module and a logic operation module, wherein the instruction processing module is used for acquiring external instruction information, including a manual instruction, an automatic instruction and a protection instruction, the logic operation module selects a current instruction from the manual instruction, the automatic instruction and the protection instruction according to the order of the priority from small to large, and generates a control instruction for controlling the action of an electromagnetic valve according to the current instruction and an allowable condition, so that the priority of the process control system is controlled by the bus instruction.
However, the above control of the priority of the process control system depends on the embedded platform, and the embedded platform has a problem of insufficient anti-interference performance, and after being subjected to strong interference, the program is out of control, so that the priority control of the process control system is lost, and the normal use of the electromagnetic valve of the ocean nuclear power platform is affected.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the electromagnetic valve control circuit of the ocean nuclear power platform, which can control the action of the electromagnetic valve according to the priority order, has strong anti-interference capability of circuit devices, ensures that the whole control circuit has good stability and wide application range.
In order to achieve the above purpose, the invention adopts the following technical scheme:
an ocean nuclear power platform solenoid valve control circuit for controlling solenoid valve action, comprising:
a contactor;
the first circuit comprises an electromagnetic valve, one end of the electromagnetic valve is connected with the power supply system, and the other end of the electromagnetic valve is connected with the normally open contact of the contactor in series and then connected with the power supply system;
the second circuit comprises a first switch, a first relay K1, a second relay K2 and a third relay K3, wherein the first switch is provided with a first contact and a second contact, the first contact is connected with a coil of a contactor in series, the second contact is sequentially connected with a parallel branch and a coil of the contactor in series, the parallel branch is formed by connecting the first branch with the second branch in parallel, the first branch comprises a normally open contact of the second relay K2 and a normally open contact of the third relay K3 which are connected in series, the second branch comprises a normally open contact of the first relay K1 and a normally closed contact of the third relay K3 which are connected in series, and the coils of the first switch and the contactor are connected with a power supply system.
On the basis of the technical scheme, the first switch is further provided with a third contact which is arranged in an opening mode.
On the basis of the technical scheme, the first switch is a change-over switch.
On the basis of the technical scheme, the first circuit further comprises a second switch, and the second switch is used for controlling the on-off of the first circuit.
On the basis of the technical scheme, the second circuit further comprises a fuse, and the fuse is arranged between the coil of the contactor and the power supply system.
The embodiment of the invention also provides a solenoid valve control device for the ocean nuclear power platform, which comprises a backup disc, a main control platform and an automatic controller, wherein the solenoid valve control circuit for the ocean nuclear power platform is arranged on the ocean nuclear power platform, the first switch is arranged on the backup disc, the first relay K1 is arranged on the automatic controller, and the second relay K2 and the third relay K3 are both arranged in the main control platform.
On the basis of the technical scheme, the automatic controller comprises a first microprocessor and a first digital quantity output module, wherein the first microprocessor is used for automatically giving a first control instruction for opening or closing the electromagnetic valve according to the acquired signal, the first digital quantity output module is used for outputting the first control instruction to the first relay K1, and the first relay K1 performs corresponding operation according to the received first control instruction.
On the basis of the technical scheme, the main control console comprises a control screen, a second microprocessor and a second digital quantity output module, wherein the control screen is used for inputting a second control instruction for opening or closing the electromagnetic valve manually, the second microprocessor is used for converting the second control instruction into a digital quantity signal, and the second digital quantity output module is used for outputting the second control instruction to the corresponding second relay K2 or third relay K3.
On the basis of the technical scheme, the first circuit further comprises a second switch used for controlling the first circuit to be turned on or off.
The invention also provides a control method of the electromagnetic valve of the ocean nuclear power platform, and the electromagnetic valve is controlled to act by using the electromagnetic valve control device of the ocean nuclear power platform.
Compared with the prior art, the invention has the advantages that:
(1) The electromagnetic valve control circuit of the ocean nuclear power platform can control the action of the electromagnetic valve according to the priority order, and has strong anti-interference capability of circuit devices, so that the whole control circuit has good stability and wide application range.
(2) The first switch is also provided with a third contact which is arranged in a disconnection way, the second circuit can be completely disconnected through the third contact, the priority of the first switch is highest, the absolute control of the first switch on the electromagnetic valve is realized, and the use is very convenient.
(3) The first circuit of the invention also comprises a second switch which is used for controlling the switch of the first circuit to be turned off, and when the first switch is switched to the second contact position, the first circuit can be turned off through the second switch to close the electromagnetic valve, so that the application range is wider.
(4) The electromagnetic valve control device for the ocean nuclear power platform can control the action of the electromagnetic valve according to the sequence from high priority to low priority of the backup disc, the main control platform and the automatic controller, has strong anti-interference capability of circuit devices, ensures that the whole control device has good stability and wide application range, has a simple structure, is convenient to operate a relay, and is economical and applicable.
Drawings
FIG. 1 is a schematic diagram of a first circuit in a solenoid valve control circuit for a ocean nuclear power platform in an embodiment of the invention;
fig. 2 is a schematic diagram of a second circuit in the electromagnetic valve control circuit of the ocean nuclear power platform according to the embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Referring to fig. 1 and 2, an embodiment of the present invention provides a solenoid valve control circuit for a ocean nuclear power platform, which is used for controlling a solenoid valve Y to act, and includes a contactor, a first circuit and a second circuit.
The first circuit comprises an electromagnetic valve Y, one end of the electromagnetic valve Y is connected with the power supply system, and the other end of the electromagnetic valve Y is connected with the power supply system after being connected with a normally open contact of the contactor in series; the second circuit comprises a first switch SA, a first relay K1, a second relay K2 and a third relay K3, wherein the first switch SA is provided with a first contact SA1 and a second contact SA2, the first contact SA1 is connected with a coil KM-2 of a contactor in series, the second contact SA2 is sequentially connected with a parallel branch and the coil KM-2 of the contactor in series, the parallel branch is formed by connecting the first branch with the second branch in parallel, the first branch comprises a normally open contact K2-1 of the second relay K2 and a normally open contact K3-1 of the third relay K3 which are connected in series, the second branch comprises a normally open contact K1-1 of the first relay K1 and a normally closed contact K3-2 of the third relay K3 which are connected in series, and the first switch SA and the coil KM-2 of the contactor are connected with a power supply system.
Further, the first switch SA is further provided with a third contact SA3 which is arranged in a disconnected mode, the second circuit can be completely disconnected through the third contact SA3, at the moment, the electromagnetic valve Y can be closed only through the first switch SA without being controlled by the first relay K1, the second relay K2 and the third relay K3, the first switch SA has the highest priority, absolute control of the first switch SA on the electromagnetic valve Y is realized, and the use is very convenient. Preferably, the first switch SA is a transfer switch.
Further, the first circuit further includes a second switch QF, where the second switch QF is used to control the switch of the first circuit to be turned off, and when the first switch SA is switched to the position of the second contact SA2, if control of the first relay K1, the second relay K2 and the third relay K3 is not needed, the first circuit can be turned off through the second switch QF, so that the electromagnetic valve Y is turned off, and the application range is wider. Preferably, the second switch QF is a load switch.
Further, the second circuit further comprises a fuse which is arranged between the coil KM-2 of the contactor and the power supply system, when the current passing through the contactor exceeds a certain limit, the fuse can be fused, and the connection between the coil KM-2 of the contactor and the power supply system is disconnected, so that the circuit can be well protected.
The working principle of the electromagnetic valve Y control circuit of the ocean nuclear power platform provided by the embodiment of the invention is as follows: the priority of the first switch SA is highest, when the first switch SA is switched to the position of the first contact SA1, the contactor coil KM-2 is electrified, the contactor contact KM-1 is closed, and the electromagnetic valve Y is opened; when the first switch SA is switched to the second contact SA2, if the third relay K3 is electrified, the normally open contact K3-1 of the third relay K3 is closed, the normally closed contact K3-2 of the third relay K3 is opened, at the moment, only the operation of the second relay K2 is effective, after the second relay K2 is electrified, the normally open contact K2-1 of the second relay K2 is closed, the contactor coil KM-2 is electrified, the contactor contact KM-1 is closed, the electromagnetic valve Y is opened, and after the second relay K2 is powered off, the electromagnetic valve Y is closed; if the third relay K3 is powered off, a normally open contact K3-1 of the third relay K3 is opened, a normally closed contact K3-2 of the third relay K3 is closed, only the operation of the first relay K1 is effective at the moment, after the first relay K1 is powered on, a normally open contact K1-1 of the first relay K1 is closed, a contactor coil KM-2 is powered on, a contactor contact KM-1 is closed, an electromagnetic valve Y is opened, and after the first relay K1 is powered off, the electromagnetic valve Y is closed; when the first switch SA is switched to the third contact SA3, the second circuit is completely disconnected, the contactor coil KM-2 is powered off, the contactor contact KM-1 is opened, and the electromagnetic valve Y is closed.
The electromagnetic valve control circuit of the ocean nuclear power platform can control the action of the electromagnetic valve according to the priority order, and has strong anti-interference capability of circuit devices, so that the whole control circuit has good stability and wide application range.
The embodiment of the invention also provides a solenoid valve control device for the ocean nuclear power platform, which comprises a backup disc, a main control platform and an automatic controller, wherein the solenoid valve Y control circuit for the ocean nuclear power platform is arranged on the ocean nuclear power platform, a first switch SA is arranged on the backup disc, a first relay K1 is arranged on the automatic controller, and a second relay K2 and a third relay K3 are both arranged in the main control platform.
The automatic controller comprises a first microprocessor and a first digital quantity output module, the first microprocessor is used for automatically giving out a first control instruction for opening or closing the electromagnetic valve Y according to the acquired signal, the first digital quantity output module is used for outputting the first control instruction to the first relay K1, and the first relay K1 carries out corresponding operation according to the received first control instruction.
The main control console comprises a control screen, a second microprocessor and a second digital quantity output module, the control screen is used for inputting a second control instruction for opening or closing the electromagnetic valve Y manually, the second microprocessor is used for converting the second control instruction into a digital quantity signal, and the second digital quantity output module is used for outputting the second control instruction to a corresponding second relay K2 or third relay K3. In actual use, a bus transceiver is further arranged between the control screen and the second microprocessor, and is used for receiving a second control instruction sent by the control screen and outputting the second control instruction to the second microprocessor for processing.
In this embodiment, there are two virtual switches on the control screen for controlling the second relay K2 and the third relay K3, respectively, and the corresponding control instruction can be sent to the corresponding relay by clicking the virtual switch with a mouse, and the virtual switch has two keys corresponding to the on or off state of the relay, when clicking the on key of the virtual switch, the relay can be controlled to be turned on, and when clicking the off key of the virtual switch, the relay can be controlled to be turned off.
The electromagnetic valve control device for the ocean nuclear power platform further comprises a valve control cabinet, the first circuit further comprises a second switch QF for controlling the first circuit to be turned on or off, the second switch QF and the contactor KM are arranged in the valve control cabinet, when the first switch SA is switched to the position of the second contact SA2, if control of a backup disc, an automatic controller and a main control console is not needed, the first circuit can be turned off through the second switch QF, the electromagnetic valve Y is closed, and the application range is wider.
The electromagnetic valve control device for the ocean nuclear power platform can control the action of the electromagnetic valve according to the sequence from high priority to low priority of the backup disc, the main control platform and the automatic controller, has strong anti-interference capability of circuit devices, ensures that the whole control device has good stability and wide application range, has a simple structure, is convenient to operate a relay, and is economical and applicable.
The embodiment of the invention also provides a control method for the electromagnetic valve of the ocean nuclear power platform, which uses the electromagnetic valve control device of the ocean nuclear power platform to control the action of the electromagnetic valve, and comprises the following steps:
closing the second switch QF, wherein when the second switch QF is closed, the first circuit has the condition of the action of the electromagnetic valve Y;
operating a first switch SA of the backup disc, when the first switch SA is switched to the position of a first contact SA1, namely an 'on' gear, energizing a contactor coil KM-2, closing a contactor contact KM-1, and opening an electromagnetic valve Y;
when the first switch SA is switched to the third contact SA3, namely the off gear, the second circuit is completely disconnected, the contactor coil KM-2 is powered off, the contactor contact KM-1 is opened, the electromagnetic valve Y is closed, at the moment, when the first relay K1, the second relay K2 and the third relay K3 act, the opening or closing of the electromagnetic valve Y is not influenced, and the operation priority of the first switch SA of the backup disc is highest;
when the first switch SA is switched to the second contact SA2, namely a 'switching' gear, clicking a virtual switch corresponding to the third relay K3 on a control screen of the main control desk, sending a corresponding operation instruction to the third relay K3, controlling the third relay K3 to be electrified, controlling the normally open contact K3-1 of the third relay K3 to be closed, and controlling the normally closed contact K3-2 of the third relay K3 to be opened, wherein only the operation of the second relay K2 is effective at the moment, clicking a virtual switch corresponding to the second relay K2 on the control screen of the main control desk, controlling the second relay K2 to be electrified, the normally open contact K2-1 of the second relay K2 to be closed, electrifying the contactor coil KM-2, closing the contactor contact KM-1, opening the electromagnetic valve Y, and correspondingly, when the electromagnetic valve Y is required to be closed, clicking the corresponding virtual switch, controlling the second relay K2 to be closed, closing the electromagnetic valve Y at the moment, enabling the first relay K1 to act, and having no influence on the opening or closing of the electromagnetic valve Y, wherein the priority of the operation of the main control desk is higher than that of the automatic controller;
if the third relay K3 is powered off, the normally open contact K3-1 of the third relay K3 is opened, the normally closed contact K3-2 of the third relay K3 is closed, only the operation of the first relay K1 is effective at this time, after the first relay K1 is powered on, the normally open contact K1-1 of the first relay K1 is closed, the contactor coil KM-2 is powered on, the contactor contact KM-1 is closed, the electromagnetic valve Y is opened, after the first relay K1 is powered off, the electromagnetic valve Y is closed, and at this time, the priority of the automatic controller is lowest.
The invention is not limited to the embodiments described above, but a number of modifications and adaptations can be made by a person skilled in the art without departing from the principle of the invention, which modifications and adaptations are also considered to be within the scope of the invention. What is not described in detail in this specification is prior art known to those skilled in the art.
Claims (10)
1. An ocean nuclear power platform solenoid valve control circuit for controlling solenoid valve action, characterized by comprising:
a contactor;
the first circuit comprises an electromagnetic valve, one end of the electromagnetic valve is connected with the power supply system, and the other end of the electromagnetic valve is connected with the normally open contact of the contactor in series and then connected with the power supply system;
the second circuit comprises a first switch, a first relay K1, a second relay K2 and a third relay K3, wherein the first switch is provided with a first contact and a second contact, the first contact is connected with a coil of a contactor in series, the second contact is sequentially connected with a parallel branch and a coil of the contactor in series, the parallel branch is formed by connecting the first branch with the second branch in parallel, the first branch comprises a normally open contact of the second relay K2 and a normally open contact of the third relay K3 which are connected in series, the second branch comprises a normally open contact of the first relay K1 and a normally closed contact of the third relay K3 which are connected in series, and the coils of the first switch and the contactor are connected with a power supply system.
2. The ocean nuclear power platform solenoid valve control circuit of claim 1, wherein: the first switch also has a third contact that is open.
3. The ocean nuclear power platform solenoid valve control circuit of claim 2, wherein: the first switch is a transfer switch.
4. The ocean nuclear power platform solenoid valve control circuit of claim 1, wherein: the first circuit further comprises a second switch, and the second switch is used for controlling the on-off of the first circuit.
5. The ocean nuclear power platform solenoid valve control circuit of claim 1, wherein: the second circuit further comprises a fuse, and the fuse is arranged between the coil of the contactor and the power supply system.
6. The utility model provides a ocean nuclear power platform solenoid valve controlling means, includes backup disc, master control stand and automatic control ware, its characterized in that: the ocean nuclear power platform electromagnetic valve control circuit according to any one of claims 1 to 5 is installed on the ocean nuclear power platform, the first switch is arranged on the backup disc, the first relay K1 is arranged on the automatic controller, and the second relay K2 and the third relay K3 are both arranged in the main control console.
7. The electromagnetic valve control device for the ocean nuclear power platform according to claim 6, wherein the automatic controller comprises a first microprocessor and a first digital quantity output module, the first microprocessor is used for automatically giving a first control instruction for opening or closing the electromagnetic valve according to the acquired signal, the first digital quantity output module is used for outputting the first control instruction to the first relay K1, and the first relay K1 performs corresponding operation according to the received first control instruction.
8. The electromagnetic valve control device for the ocean nuclear power platform according to claim 6, wherein the main control platform comprises a control screen, a second microprocessor and a second digital quantity output module, the control screen is used for inputting a second control instruction for opening or closing the electromagnetic valve manually, the second microprocessor is used for converting the second control instruction into a digital quantity signal, and the second digital quantity output module is used for outputting the second control instruction to the corresponding second relay K2 or third relay K3.
9. The ocean nuclear power platform solenoid valve control apparatus of claim 6, wherein: the first circuit further comprises a second switch for controlling the first circuit to be turned on or off.
10. A control method of an electromagnetic valve of a marine nuclear power platform is characterized by comprising the following steps of: the electromagnetic valve control device for the ocean nuclear power platform according to claim 6 is used for controlling the action of the electromagnetic valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711223444.1A CN109839862B (en) | 2017-11-29 | 2017-11-29 | Ocean nuclear power platform electromagnetic valve control circuit, control device and control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711223444.1A CN109839862B (en) | 2017-11-29 | 2017-11-29 | Ocean nuclear power platform electromagnetic valve control circuit, control device and control method |
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| CN109839862A CN109839862A (en) | 2019-06-04 |
| CN109839862B true CN109839862B (en) | 2024-02-13 |
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| CN114046374B (en) * | 2021-10-28 | 2024-02-13 | 苏州热工研究院有限公司 | Nuclear power unit power supply system based on electromagnetic valve and pneumatic electromagnetic valve |
| CN116182499A (en) * | 2023-01-09 | 2023-05-30 | 珠海格力电器股份有限公司 | Control panel, control method thereof and refrigerator |
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