CN105022421B - A kind of Large-scale fire-electricity unit subsidiary engine cooling water system filling valve level controlling system - Google Patents
A kind of Large-scale fire-electricity unit subsidiary engine cooling water system filling valve level controlling system Download PDFInfo
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- CN105022421B CN105022421B CN201410177607.7A CN201410177607A CN105022421B CN 105022421 B CN105022421 B CN 105022421B CN 201410177607 A CN201410177607 A CN 201410177607A CN 105022421 B CN105022421 B CN 105022421B
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Abstract
The present invention provides a kind of filling valve level controlling systems of Large-scale fire-electricity unit subsidiary engine cooling water system, using the switching value time delay module in Distributed Control System, analog quantity time delay module, with module, pulse module, rest-set flip-flop module, subtraction block, high level monitoring module, the water-filling control of valve position real-time online optimizer being built into switching value handover module, intervention subsidiary engine cooling water system has in water-filling control system, form an independent filling valve level controlling system, it solves liquid-level switch in existing control system water filling process to send out by mistake, cooling water inlet pressure declines too fast etc. technical problems, improve subsidiary engine cooling water system water-filling work efficiency.
Description
Technical field
The present invention relates to automatic control systems, and in particular to a kind of Large-scale fire-electricity unit subsidiary engine cooling water system filling valve position
Control system.
Background technology
The purpose of water-filling control system is the needs run according to subsidiary engine cooling system, each cooling sector is carried out corresponding
Water-filling.Each cooling sector integrates relevant cooling triangle element and its corresponding water inlet pipe, outlet pipe and tapping pipe, they
It arranges and works independently parallel, therefore have the water-filling control system of 4 same water-filling control cooling sectors.
Program closes transmission pump drainage side motor-driven valve and spilling water valve by control logic and opens transmission pump priming side motor-driven valve,
Start 1 operation transmission pump, close cooling sector drain valve and cooling sector Inlet and outlet water communicating valve, point operation control opens cooling fan
Section inlet valve and cooling sector outlet valve, and fully open cooling sector rushes nitrogen inlet valve.Waiting cooling sector water-filling about
After 8min, if cooling sector discharge duct liquid-level switch is closed, and expansion tank stops 1 operation transmission for ordinary water level
Pump, closes transmission pump priming side motor-driven valve and cooling sector rushes nitrogen inlet valve.
But in actual water filling process, liquid fluctuating can be such that liquid-level switch sends out by mistake；Secondly, inlet/outlet valve is opened in water filling process
Door is too fast to make the decline of cooling water inlet pressure too fast, and water circulating pump is caused to export decompression.
The content of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of filling valve position of Large-scale fire-electricity unit subsidiary engine cooling water system
Control system can solve liquid-level switch in existing control system water filling process and send out by mistake, and cooling water inlet pressure declines too fast
Problem.
(2) technical solution
In order to reach object above, the present invention is achieved by the following technical programs：
A kind of filling valve level controlling system of Large-scale fire-electricity unit subsidiary engine cooling water system, the system include：First and mould
Block, second report module, the 3rd high report module, first switch amount time delay module, second with module, the first high report module, the second height
Switching value time delay module, height report module, switching value selecting module, analog quantity time delay module, subtraction block, pulse module or
Module and rest-set flip-flop module；
Wherein, the first input end of the instruction input first and module of cooling sector inlet valve or outlet valve, valve position are opened
The input terminal of the first high report module of signal input, the output terminal of the first high report module and first and the second input terminal company of module
It connects, first is connected with the output terminal of module with the first input end of rest-set flip-flop module；Level switch signal inputs first simultaneously
The input terminal of switch time delay module and second switch time delay module, output terminal and the switch selecting module of first switch time delay module
First input end connection, the output terminal of second switch time delay module is connected with the second input terminal of switch selecting module, valve position
Signal input height reports the input terminal of module, and height reports the output terminal of module to be connected with switching the 3rd input terminal of selecting module,
Switch the output terminal of selecting module with or the first input end of module be connected；Pressure signal inputs analog quantity time delay module simultaneously
Second input terminal of input terminal and subtraction block, the output terminal of analog quantity time delay module and the first input end of subtraction block connect
It connects, the output terminal of subtraction block be connected with the input terminal of the second high report module, the second high output terminal for reporting module and second and mould
The first input end connection of block, the input terminal of the 3rd high report module of valve position signal input, the output terminal of the 3rd high report module and the
Two are connected with the second input terminal of module, and second is connected with the output terminal of module and the input terminal of pulse module, pulse module
Output terminal with or the second input terminal of module be connected or the output terminal of module is connected with the second input terminal of rest-set flip-flop module,
The output terminal of rest-set flip-flop module is connected with valve switch.
Preferably, the valve position signal is generated by valve position transmitter, and the pressure signal is generated by pressure transmitter.
(3) advantageous effect
The present invention at least has the advantages that：
The present invention provides a kind of Large-scale fire-electricity unit subsidiary engine cooling water system filling valve level controlling system, by cooling
The judgement of the high lower bound of hydraulic pressure force signal, valve position signal is built into filling valve level controlling system using rest-set flip-flop module etc. and exists in real time
Line optimizer realizes subsidiary engine cooling water system water-filling control of valve position, solves liquid level in existing water-filling control system water filling process and opens
The problems such as hair is sent out by mistake, and cooling water inlet pressure declines, and improve subsidiary engine cooling water system water-filling work efficiency.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these figures.
Fig. 1 is a kind of knot of Large-scale fire-electricity unit subsidiary engine cooling water system filling valve level controlling system of the embodiment of the present invention
Structure schematic diagram；
Fig. 2 is the characteristic of each module of system of the embodiment of the present invention.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment belongs to the scope of protection of the invention.
As shown in Figure 1, a kind of filling valve position of Large-scale fire-electricity unit subsidiary engine cooling water system provided in an embodiment of the present invention
Control system, the system include：First reports module with module M1, second and module M12, the first high report module M3, the second height
M11, the 3rd high report module M14, first switch amount time delay module M4, second switch amount time delay module M5, height are reported module M8, are opened
Pass amount selecting module M6, analog quantity time delay module M9, subtraction block M10, pulse module M13 or module M7 and rest-set flip-flop
Module M2.
Wherein, the first input end of the instruction input first and module M1 of cooling sector inlet valve or outlet valve, valve are opened
The input terminal of the first high report module M3 of position signal input, the output terminal of the first high report module M3 are defeated with the second of module M1 with first
Enter end connection, first is connected with the output terminal of module M1 with the first input end of rest-set flip-flop module M2；Level switch signal is same
When input first switch time delay module M4 and second switch time delay module M5 input terminal, the output of first switch time delay module M4
It holds and is connected with switching the first input end of selecting module M6, output terminal and the switch selecting module M6 of second switch time delay module M5
The connection of the second input terminal, the input terminal of valve position signal input height report module M8, height reports the output terminal and switch of module M8
The 3rd input terminal connection of selecting module M6, the output terminal of switch selecting module M6 with or the first input end of module M7 be connected,
Pressure signal inputs the input terminal of analog quantity time delay module M9 and the second input terminal of subtraction block M10, analog quantity delay simultaneously
The output terminal of module M9 is connected with the first input end of subtraction block M10, the output terminal of subtraction block M10 and the second high report module
The input terminal connection of M11, the output terminal of the second high report module M11 are connected with second with the first input end of module M12, valve position letter
The input terminal of number the 3rd high report module M14 of input, the output terminal of the 3rd high report module M14 are defeated with the second of module M12 with second
Enter end connection, second is connected with the output terminal of module M12 with the input terminal of pulse module M13, the output terminal of pulse module M13 and
Or the second input terminal connection of module M7 or the output terminal of module M7 are connected with the second input terminal of rest-set flip-flop module M2.
Wherein, the valve position signal is generated by valve position transmitter, and the pressure signal is generated by pressure transmitter.
Subtraction block, switching value selecting module in the system of the embodiment of the present invention, with module, switching value time delay module,
Analog quantity time delay module, pulse module, rest-set flip-flop module and height report the modular character of module as shown in Figure 2.Wherein, switching value
The input terminal s of selecting module M6 is connect by the valve position signal ZT that valve position transmitter is sent up by output O5 after height report module M8
Enter；First switch amount delay time const is different from second switch amount delay time const, can be set according to actual conditions each
From delay time；The parameter const of the delay τ of analogue quantity switch module, the threshold value hisp of high report module and pulse module are equal
It is set according to actual conditions.
Valve position signal ZT is respectively fed to the first high report module M3, the high report modules of height report module M8 and the 3rd in the system
M14, with set threshold value comparison so as to carrying out the judgement of the high lower bound of valve position signal；Level switch signal LT passes through access the
After one switching value time delay module M4 and second switch amount time delay module M5, input switch amount selecting switch M6 can solve water-filling
The problem of liquid level exploitation is sent out by mistake in the process；And subtraction block M10 is accessed after pressure signal P T access analog quantity time delay modules M9, into
One step subtracts output with pressure signal P T-phase so that by the judgement to cooling water pressure force signal, so as to solve cooling water inlet pressure
The problem of power declines.
Preferably, first switch amount time delay module, second switch amount time delay module, the first high report module, the second high report mould
Block, the 3rd high report module, height report module and the parameter of analog quantity time delay module according to actual conditions on-line optimization.
An embodiment of the present invention provides a kind of Large-scale fire-electricity unit subsidiary engine cooling water system filling valve level controlling systems, pass through
Judgement to cooling water pressure force signal, the high lower bound of valve position signal is simultaneously built into water-filling control of valve position system using rest-set flip-flop module etc.
System real-time online optimizer, intervention subsidiary engine cooling water system have in water-filling control system, form an independent filling valve position
Control system, solving liquid level exploitation in existing water-filling control system water filling process, hair, cooling water inlet pressure decline etc. is asked by mistake
Topic, and improve subsidiary engine cooling water system water-filling work efficiency.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
The present invention is described in detail, it will be understood by those of ordinary skill in the art that；It still can be to foregoing each implementation
Technical solution recorded in example modifies or carries out equivalent substitution to which part technical characteristic；And these modification or
It replaces, the essence of appropriate technical solution is not made to depart from the spirit and scope of various embodiments of the present invention technical solution.
Claims (2)
1. a kind of filling valve level controlling system of Large-scale fire-electricity unit subsidiary engine cooling water system, which is characterized in that the system includes：
First reports module, first switch amount delay mould with module, second and module, the first height report module, the second high report module, the 3rd height
Block, second switch amount time delay module, height report module, switching value selecting module, analog quantity time delay module, subtraction block, pulse
Module or module and rest-set flip-flop module；
Wherein, the first input end of the instruction input first and module of cooling sector inlet valve or outlet valve, valve position signal are opened
The input terminal of the high report module of input first, the output terminal of the first high report module are connected with first with the second input terminal of module, the
One is connected with the output terminal of module with the first input end of rest-set flip-flop module；Level switch signal inputs first switch amount simultaneously
The input terminal of time delay module and second switch amount time delay module, output terminal and the switching value of first switch amount time delay module select mould
The first input end connection of block, the output terminal of second switch amount time delay module connect with the second input terminal of switching value selecting module
Connect, valve position signal input height reports the input terminal of module, height report module output terminal and switching value selecting module it is the 3rd defeated
Enter end connection, the output terminal of switching value selecting module with or the first input end of module be connected；Pressure signal inputs simulation simultaneously
Measure the input terminal of time delay module and the second input terminal of subtraction block, the of the output terminal of analog quantity time delay module and subtraction block
One input terminal connects, and the output terminal of subtraction block is connected with the input terminal of the second high report module, the output terminal of the second high report module
It is connected with second with the first input end of module, the input terminal of the 3rd high report module of valve position signal input, the 3rd high report module
Output terminal is connected with second with the second input terminal of module, and second is connected with the output terminal of module and the input terminal of pulse module,
The output terminal of pulse module with or module the second input terminal be connected or the output terminal of module and rest-set flip-flop module it is second defeated
Enter end connection, the output terminal of rest-set flip-flop module is connected with valve switch.
2. system according to claim 1, which is characterized in that the valve position signal is generated by valve position transmitter, the pressure
Force signal is generated by pressure transmitter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410177607.7A CN105022421B (en) | 2014-04-29 | 2014-04-29 | A kind of Large-scale fire-electricity unit subsidiary engine cooling water system filling valve level controlling system |
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| CN201410177607.7A CN105022421B (en) | 2014-04-29 | 2014-04-29 | A kind of Large-scale fire-electricity unit subsidiary engine cooling water system filling valve level controlling system |
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| CN105022421A CN105022421A (en) | 2015-11-04 |
| CN105022421B true CN105022421B (en) | 2018-05-25 |
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