CN109709832B - Control system and method for drain box of marine nuclear power platform - Google Patents
Control system and method for drain box of marine nuclear power platform Download PDFInfo
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- CN109709832B CN109709832B CN201711008393.0A CN201711008393A CN109709832B CN 109709832 B CN109709832 B CN 109709832B CN 201711008393 A CN201711008393 A CN 201711008393A CN 109709832 B CN109709832 B CN 109709832B
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Abstract
The invention discloses a drain tank control system of an ocean nuclear power platform, which relates to the technical field of ocean nuclear power devices and comprises a parameter measuring device, a selection switch device, a drain control device and an execution device, wherein a water level regulating valve control mode selection switch receives the control operation of an operator and sends out a mode control signal for enabling the drain tank control system of the ocean nuclear power platform to be in an automatic control mode or a manual control mode according to the control operation of the operator, a water level regulating valve opening degree selection switch receives the control operation of the operator and sends out an opening degree control signal for enabling a water level regulating valve of a drain tank to be arranged at different opening degrees according to the control operation of the operator to the water level regulating valve execution device, therefore, the drain box control system with the automatic control mode and the manual control mode is realized, the stability of the drain box control system is ensured, and the labor cost is saved.
Description
Technical Field
The invention relates to the technical field of marine nuclear power devices, in particular to a control system and method for a drain tank of a marine nuclear power platform.
Background
The drainage system is an important component of the two-loop system of the marine nuclear power platform nuclear power device, and can drain and collect condensed water of each important device in the two-loop system, prevent steam leakage and further ensure the stable operation of the two-loop system. At present, the existing drainage control system is mostly used for industrial or onshore large-scale nuclear power stations, the space arrangement and the environmental conditions of the drainage control system can not meet the requirements of an ocean nuclear power platform, and the drainage system for a steam power ship generally adopts a manual direct discharge mode, so that a great amount of waste is caused. And the related technology of the existing water drainage system does not have the functions of automatic control and fault alarm, wastes the labor cost and lacks the economical efficiency and the maintainability.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a drain box control system and method for an ocean nuclear power platform, which have an automatic control mode and a manual control mode, ensure the stability of the drain box control system and save the labor cost.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: a marine nuclear power platform drain tank control system, comprising: parameter measurement device, selection switch device, hydrophobic controlling means and final controlling element, wherein:
the parameter measuring device is used for acquiring a water level pressure signal in the drain tank, converting the water level pressure signal in the drain tank into an analog quantity measuring signal and sending the analog quantity measuring signal to the drain control device;
the control system comprises a selection switch device, a control mode selection switch and a water level regulating valve state selection switch, wherein the selection switch device is used for providing an interactive interface controlled by an operator, the interactive interface comprises the control mode selection switch and the water level regulating valve state selection switch, the control mode selection switch is used for receiving the control operation of the operator and sending a mode control signal for enabling the drain tank control system of the marine nuclear power platform to be in an automatic control mode or a manual control mode according to the control operation of the operator, and the water level regulating valve opening degree selection switch is used for receiving the control operation of the operator and sending an opening degree control signal for enabling the water level regulating valve of the drain tank to be arranged at different opening degrees according to the control operation of the operator to the execution device;
the drainage control device is used for receiving the mode control signal sent by the control mode selection switch and the analog quantity measuring signal sent by the parameter measuring device, and judging the mode control signal and the analog quantity measuring signal: when the mode control signal is in an automatic control mode, if the analog quantity measuring signal is lower than the lower limit of the water level, outputting a control instruction for reducing the opening of the water level regulating valve to the execution device; if the analog quantity measuring signal is higher than the upper limit of the water level, outputting a control instruction of increasing the opening of the water level regulating valve to the execution device; when the mode control signal is in a manual control mode, a control instruction is not output to the execution device;
and the execution device is used for receiving the control instruction sent by the drainage control device and the opening control signal sent by the opening selection switch of the water level regulating valve and regulating the opening of the water level regulating valve according to the control instruction sent by the drainage control device or the opening control signal sent by the opening selection switch of the water level regulating valve.
On the basis of the technical scheme, the drain tank control system further comprises a collecting and transmitting device and a display device, wherein the collecting and transmitting device is used for collecting the mode control signal, the analog quantity measurement signal and the control instruction output by the drain control device and sending the mode control signal, the analog quantity measurement signal and the control instruction to the display device, and the display device is used for displaying the mode control signal, the analog quantity measurement signal and the control instruction sent by the drain control device.
On the basis of the technical scheme, the drain tank control system further comprises an alarm device, the parameter measuring device is further used for converting the analog quantity measuring signal into an alarm signal, and the alarm device is used for receiving the alarm signal sent by the parameter measuring device and sending an alarm.
On the basis of the above technical solution, the parameter measuring apparatus includes:
the differential pressure transmitting module is used for acquiring a water level pressure signal in the drain tank and converting the water level pressure signal into an analog quantity measuring signal which is in a linear relation with the water level of the drain tank;
the isolation module is used for isolating the analog quantity measurement signal output by the acquisition module;
the data conversion module is used for conditioning the analog quantity measurement signal output by the isolation module and converting the analog quantity measurement signal into a digital signal;
and the intelligent processing module is used for processing the digital signals output by the data conversion module and outputting the final analog quantity measurement signals.
On the basis of the technical scheme, the parameter measuring device further comprises a fixed value comparison module, wherein the fixed value comparison module is used for comparing the analog quantity measuring signal output by the intelligent processing module with a set value and outputting an alarm signal according to a comparison result.
On the basis of the above technical solution, the hydrophobic control device includes:
the digital quantity input module is used for receiving a mode control signal sent by the control mode selection switch and outputting the mode control signal to the controller;
the analog quantity input module is used for receiving the measurement signal sent by the parameter measurement device and outputting the measurement signal to the controller;
the controller judges the mode control signal and the measurement signal and outputs a control instruction according to a judgment result;
the communication module is used for uploading the control instruction output by the controller to the acquisition and transmission device;
and the analog quantity output module is used for converting the control instruction output by the controller into an analog quantity form for output.
On the basis of the technical scheme, the execution device is also used for acquiring a water level regulating valve opening signal of the water level regulating valve and sending the water level regulating valve opening signal to the analog quantity input module, and the analog quantity input module is also used for receiving the water level regulating valve opening signal output by the execution device.
On the basis of the technical scheme, the measurement signal is the water level of the drain tank.
The invention also discloses a control method of the drain tank of the marine nuclear power platform, which comprises the following steps:
s1, acquiring a water level pressure signal in the drain tank through the parameter measuring device, converting the water level pressure signal in the drain tank into an analog quantity measuring signal and sending the analog quantity measuring signal to the drain control device;
s2, the control mode selection switch receives the control operation of the operator and sends out a mode control signal which makes the drain tank control system of the marine nuclear power platform be in an automatic control mode or a manual control mode according to the control operation; when the mode control signal is the automatic control mode, the process proceeds to step S3, and when the mode control signal is the manual control mode, the process proceeds to step S5;
and S3, the drainage control device receives the mode control signal sent by the control mode selection switch and the analog quantity measurement signal sent by the parameter measurement device, and judges the mode control signal and the analog quantity measurement signal: if the analog quantity measurement signal is lower than the lower limit of the water level, outputting a control instruction for reducing the opening of the water level regulating valve to the execution device; if the analog quantity measuring signal is higher than the upper limit of the water level, outputting a control instruction of increasing the opening of the water level regulating valve to the execution device;
s4, the executive device is used for receiving the control instruction sent by the drainage control device, adjusting the opening of the water level adjusting valve according to the control instruction sent by the drainage control device and ending;
s5, the water level regulating valve opening degree selection switch receives the control operation of the operator and sends out an opening degree control signal which enables the water level regulating valve of the drain tank to be set at different opening degrees to the execution device according to the control operation of the operator;
and S6, the execution device is used for receiving the opening control signal sent by the opening selection switch of the water level regulating valve, regulating the opening of the water level regulating valve according to the opening control signal sent by the opening selection switch of the water level regulating valve, and ending.
Compared with the prior art, the invention has the advantages that:
the drain tank control system comprises a parameter measuring device, a selection switch device, a drain control device and an execution device, wherein a water level regulating valve control mode selection switch receives control operation of an operator and sends out a mode control signal for enabling the drain tank control system of the marine nuclear power platform to be in an automatic control mode or a manual control mode according to the control operation of the operator, and a water level regulating valve opening degree selection switch receives the control operation of the operator and sends out an opening degree control signal for enabling a water level regulating valve of a drain tank to be arranged at different opening degrees according to the control operation of the operator to the water level regulating valve execution device, so that the drain tank control system with the automatic control mode and the manual control mode is realized, the stability of the drain tank control system is ensured, and meanwhile, the labor cost is saved.
Drawings
FIG. 1 is a schematic structural diagram of a steam trap control system of an ocean nuclear power platform according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a control method of a drain tank of the marine nuclear power platform in 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, an embodiment of the present invention provides a control system for a drain tank of an ocean nuclear power platform, including: parameter measurement device, selection switch device, hydrophobic controlling means and final controlling element, wherein:
the parameter measuring device is used for acquiring a water level pressure signal in the drain tank, converting the water level pressure signal in the drain tank into an analog quantity measuring signal and sending the analog quantity measuring signal to the drain control device;
the system comprises a selection switch device, a control module, a water level regulating valve state selection switch, a control module and an execution device, wherein the selection switch device is used for providing an interactive interface controlled by an operator, the interactive interface comprises the control module selection switch and the water level regulating valve state selection switch, the control module selection switch is used for receiving the control operation of the operator and sending out a mode control signal for enabling a drain tank control system of the marine nuclear power platform to be in an automatic control mode or a manual control mode according to the control operation of the operator, and the water level regulating valve opening degree selection switch is used for receiving the control operation of the operator and sending out an opening degree control signal for enabling the water level regulating valve of the drain tank to be arranged at different opening degrees according to the control operation of the operator to the execution device; the steam trap tank comprises a 1# steam trap tank and a 2# steam trap tank. The control mode selection switch includes a # 1 drain tank control mode selection switch and a # 2 drain tank control mode selection switch. The water level regulating valve opening selecting switch comprises a No. 1 drain tank water level regulating valve opening selecting switch and a No. 2 drain tank water level regulating valve opening selecting switch.
The drainage control device is used for receiving the mode control signal sent by the control mode selection switch and the analog quantity measuring signal sent by the parameter measuring device, and judging the mode control signal and the analog quantity measuring signal: when the mode control signal is in an automatic control mode, if the analog quantity measuring signal is lower than the lower limit of the water level, outputting a control instruction of reducing the opening of the water level regulating valve to an execution device; if the analog quantity measuring signal is higher than the upper limit of the water level, outputting a control instruction of increasing the opening of the water level regulating valve to an execution device; when the mode control signal is in the manual control mode, the control instruction is not output to the execution device;
and the execution device is used for receiving the control instruction sent by the drainage control device and the opening control signal sent by the water level regulating valve opening selection switch and regulating the opening of the water level regulating valve according to the control instruction sent by the drainage control device or the opening control signal sent by the water level regulating valve opening selection switch. The actuating device comprises a 1# steam trap actuating device and a 2# steam trap actuating device.
The drain box control system can realize automatic control and manual control, the drain control system always works in an automatic control mode during normal operation, and the normal operation of the drain box control system can be ensured in a manual control mode under the condition of emergency or failure of a drain box control device, so that the operation reliability of the drain box control system is improved, the stability of the drain box control system is ensured, and the labor cost is saved.
The drain tank control system further comprises a collecting and transmitting device and a display device, the collecting and transmitting device is used for collecting mode control signals, analog quantity measuring signals and control instructions output by the drain tank control device, the mode control signals, the analog quantity measuring signals and the control instructions are sent to the display device, and the display device is used for displaying the mode control signals, the analog quantity measuring signals and the control instructions sent by the drain tank control device, so that the information of the drain tank control system is stored, displayed and inquired.
The drain tank control system further comprises an alarm device, the parameter measuring device is also used for converting the analog quantity measuring signal into an alarm signal, and the alarm device is used for receiving the alarm signal sent by the parameter measuring device and sending an alarm for providing an alarm instruction for an operator.
The parameter measuring device includes:
the differential pressure transmitting module is used for acquiring a water level pressure signal in the drain tank and converting the water level pressure signal into an analog quantity measuring signal which is in a linear relation with the water level of the drain tank; the analog quantity measurement signal is a current signal of 4 mA-20 mA.
The isolation module is used for isolating the analog quantity measurement signal output by the acquisition module;
the data conversion module is used for conditioning the analog quantity measurement signal output by the isolation module and converting the analog quantity measurement signal into a digital signal;
and the intelligent processing module is used for processing the digital signals output by the data conversion module and outputting the final analog quantity measurement signals.
The parameter measuring device also comprises a fixed value comparison module, wherein the fixed value comparison module is used for comparing the analog quantity measuring signal output by the intelligent processing module with a set value and outputting an alarm signal according to the comparison result.
The drainage control device includes:
the digital quantity input module is used for receiving the mode control signal sent by the control mode selection switch and outputting the mode control signal to the controller;
the analog quantity input module is used for receiving the measurement signal sent by the parameter measurement device and outputting the measurement signal to the controller;
the controller judges the mode control signal and the measurement signal and outputs a control instruction according to a judgment result;
the communication module is used for uploading the control instruction output by the controller to the acquisition and transmission device;
and the analog quantity output module is used for converting the control instruction output by the controller into an analog quantity form for output.
The execution device is also used for acquiring a water level regulating valve opening signal of the water level regulating valve and sending the water level regulating valve opening signal to the analog quantity input module, and the analog quantity input module is also used for receiving the water level regulating valve opening signal output by the execution device, so that closed-loop automatic control is formed, and the accuracy of system control is improved.
The bottom of the drain box control system is provided with the shock absorber, the circuit board in the system is coated with the three-proofing paint, and the size of the drain box control system equipment is not more than 1800mm multiplied by 600mm multiplied by 700mm, so that the marine environment and space requirements of the platform are met.
The embodiment of the invention also discloses a control method of the drain tank of the marine nuclear power platform, which comprises the following steps:
s1, acquiring a water level pressure signal in the drain tank through the parameter measuring device, converting the acquired water level pressure signal in the drain tank into an analog quantity measuring signal and sending the analog quantity measuring signal to the drain control device;
s2, the control mode selection switch receives the control operation of the operator and sends out a mode control signal which makes the drain tank control system of the marine nuclear power platform be in an automatic control mode or a manual control mode according to the control operation; when the mode control signal is the automatic control mode, the process proceeds to step S3, and when the mode control signal is the manual control mode, the process proceeds to step S5;
and S3, the drainage control device receives the mode control signal sent by the control mode selection switch and the analog quantity measurement signal sent by the parameter measurement device, and judges the mode control signal and the analog quantity measurement signal: if the analog quantity measuring signal is lower than the lower limit of the water level, outputting a control instruction of reducing the opening of the water level regulating valve to an execution device; if the analog quantity measuring signal is higher than the upper limit of the water level, outputting a control instruction of increasing the opening of the water level regulating valve to an execution device;
s4, the execution device is used for receiving the control instruction sent by the drainage control device, adjusting the opening of the water level adjusting valve according to the control instruction sent by the drainage control device and ending;
s5, the water level regulating valve opening selecting switch receives the control operation of the operator and sends out an opening control signal to the execution device according to the control operation to make the water level regulating valve of the drain tank set at different openings;
and S6, the executive device is used for receiving the opening control signal sent by the opening selection switch of the water level regulating valve, regulating the opening of the water level regulating valve according to the opening control signal sent by the opening selection switch of the water level regulating valve, and ending.
The present invention is not limited to the above-described embodiments, and it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements are also considered to be within the scope of the present invention. Those not described in detail in this specification are within the skill of the art.
Claims (6)
1. The utility model provides an ocean nuclear power platform drain trap control system which characterized in that includes: parameter measurement device, selection switch device, hydrophobic controlling means and final controlling element, wherein:
the parameter measuring device is used for acquiring a water level pressure signal in the drain tank, converting the water level pressure signal in the drain tank into an analog quantity measuring signal and sending the analog quantity measuring signal to the drain control device;
the control system comprises a selection switch device, a control mode selection switch and a water level regulating valve state selection switch, wherein the selection switch device is used for providing an interactive interface controlled by an operator, the interactive interface comprises the control mode selection switch and the water level regulating valve state selection switch, the control mode selection switch is used for receiving the control operation of the operator and sending a mode control signal for enabling the drain tank control system of the marine nuclear power platform to be in an automatic control mode or a manual control mode according to the control operation of the operator, and the water level regulating valve opening degree selection switch is used for receiving the control operation of the operator and sending an opening degree control signal for enabling the water level regulating valve of the drain tank to be arranged at different opening degrees according to the control operation of the operator to the execution device;
the drainage control device is used for receiving the mode control signal sent by the control mode selection switch and the analog quantity measuring signal sent by the parameter measuring device, and judging the mode control signal and the analog quantity measuring signal: when the mode control signal is in an automatic control mode, if the analog quantity measuring signal is lower than the lower limit of the water level, outputting a control instruction for reducing the opening of the water level regulating valve to the execution device; if the analog quantity measuring signal is higher than the upper limit of the water level, outputting a control instruction of increasing the opening of the water level regulating valve to the execution device; when the mode control signal is in a manual control mode, a control instruction is not output to the execution device;
the execution device is used for receiving a control instruction sent by the drainage control device and an opening control signal sent by the water level regulating valve opening selection switch and regulating the opening of the water level regulating valve according to the control instruction sent by the drainage control device or the opening control signal sent by the water level regulating valve opening selection switch;
the drain tank control system also comprises an alarm device, the parameter measuring device is also used for converting the analog quantity measuring signal into an alarm signal, and the alarm device is used for receiving the alarm signal sent by the parameter measuring device and sending an alarm;
the parameter measuring device includes:
the differential pressure transmitting module is used for acquiring a water level pressure signal in the drain tank and converting the water level pressure signal into an analog quantity measuring signal which is in a linear relation with the water level of the drain tank;
the isolation module is used for isolating the analog quantity measurement signal output by the acquisition module;
the data conversion module is used for conditioning the analog quantity measurement signal output by the isolation module and converting the analog quantity measurement signal into a digital signal;
the intelligent processing module is used for processing the digital signals output by the data conversion module and outputting final analog quantity measurement signals;
the drain control apparatus includes:
the digital quantity input module is used for receiving a mode control signal sent by the control mode selection switch and outputting the mode control signal to the controller;
the analog quantity input module is used for receiving the measurement signal sent by the parameter measurement device and outputting the measurement signal to the controller;
the controller judges the mode control signal and the measurement signal and outputs a control instruction according to a judgment result;
the communication module is used for uploading the control instruction output by the controller to the acquisition and transmission device;
and the analog quantity output module is used for converting the control instruction output by the controller into an analog quantity form for output.
2. The marine nuclear power platform steam trap control system of claim 1, wherein: the drain trap control system further comprises a collecting and transmitting device and a display device, wherein the collecting and transmitting device is used for collecting the mode control signal, the analog quantity measuring signal and the control instruction output by the drain control device, and sending the mode control signal, the analog quantity measuring signal and the control instruction to the display device, and the display device is used for displaying the mode control signal, the analog quantity measuring signal and the control instruction sent by the drain control device.
3. The marine nuclear power platform steam trap control system of claim 1, wherein: the parameter measuring device also comprises a fixed value comparison module, wherein the fixed value comparison module is used for comparing the analog quantity measuring signal output by the intelligent processing module with a set value and outputting an alarm signal according to the comparison result.
4. The marine nuclear power platform steam trap control system of claim 1, wherein: the execution device is also used for acquiring a water level regulating valve opening signal of the water level regulating valve and sending the water level regulating valve opening signal to the analog quantity input module, and the analog quantity input module is also used for receiving the water level regulating valve opening signal output by the execution device.
5. The marine nuclear power platform steam trap control system of claim 1, wherein: the measuring signal is the water level of the drain tank.
6. A method of controlling the marine nuclear power platform trap control system of claim 1, comprising the steps of:
s1, acquiring a water level pressure signal in the drain tank through the parameter measuring device, converting the water level pressure signal in the drain tank into an analog quantity measuring signal and sending the analog quantity measuring signal to the drain control device;
s2, the control mode selection switch receives the control operation of the operator and sends out a mode control signal which makes the drain tank control system of the marine nuclear power platform be in an automatic control mode or a manual control mode according to the control operation; when the mode control signal is the automatic control mode, the process proceeds to step S3, and when the mode control signal is the manual control mode, the process proceeds to step S5;
and S3, the drainage control device receives the mode control signal sent by the control mode selection switch and the analog quantity measurement signal sent by the parameter measurement device, and judges the mode control signal and the analog quantity measurement signal: if the analog quantity measurement signal is lower than the lower limit of the water level, outputting a control instruction for reducing the opening of the water level regulating valve to the execution device; if the analog quantity measuring signal is higher than the upper limit of the water level, outputting a control instruction of increasing the opening of the water level regulating valve to the execution device;
s4, the executive device is used for receiving the control instruction sent by the drainage control device, adjusting the opening of the water level adjusting valve according to the control instruction sent by the drainage control device and ending;
s5, the water level regulating valve opening degree selection switch receives the control operation of the operator and sends out an opening degree control signal which enables the water level regulating valve of the drain tank to be set at different opening degrees to the execution device according to the control operation of the operator;
and S6, the execution device is used for receiving the opening control signal sent by the opening selection switch of the water level regulating valve, regulating the opening of the water level regulating valve according to the opening control signal sent by the opening selection switch of the water level regulating valve, and ending.
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| CN110320939A (en) * | 2019-07-24 | 2019-10-11 | 中广核工程有限公司 | A kind of nuclear power station GSS system drain tank tank level control system and method |
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| JP2010121890A (en) * | 2008-11-20 | 2010-06-03 | Hitachi Ltd | Tank water level control system |
| CN101560967B (en) * | 2009-05-31 | 2011-06-22 | 中国电力工程顾问集团西南电力设计院 | Drainage system of feed pump turbine arranged at low position |
| CN201884077U (en) * | 2010-11-12 | 2011-06-29 | 汇胜集团股份有限公司 | Drainage box water feeding device |
| CN203880386U (en) * | 2014-06-19 | 2014-10-15 | 大唐苏州热电有限责任公司 | Automatic drain tank with middle baffle plate |
| CN206234808U (en) * | 2016-12-01 | 2017-06-09 | 国电蓬莱发电有限公司 | A kind of Boiler Air Heater's draining system |
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