CN207936047U - The control device of outer steam cooler heat regenerative system - Google Patents
The control device of outer steam cooler heat regenerative system Download PDFInfo
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- CN207936047U CN207936047U CN201721651466.3U CN201721651466U CN207936047U CN 207936047 U CN207936047 U CN 207936047U CN 201721651466 U CN201721651466 U CN 201721651466U CN 207936047 U CN207936047 U CN 207936047U
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- 230000001172 regenerating effect Effects 0.000 title claims abstract description 40
- 239000007788 liquid Substances 0.000 claims abstract description 111
- 230000001105 regulatory effect Effects 0.000 claims abstract description 43
- 230000001360 synchronised effect Effects 0.000 claims abstract description 12
- 230000002209 hydrophobic effect Effects 0.000 abstract description 32
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a kind of control devices of outer steam cooler heat regenerative system.The outer steam cooler heat regenerative system adds configuration using biserial height, outer steam cooler liquid level LWAdd A hydrophobic to outer steam cooler regulating valve V by #1 highW1AAdd B hydrophobic to outer steam cooler regulating valve V with #1 highW1BJoint, synchronous control.Outer steam cooler liquid level LWThe difference of setting value and value of feedback is sent into PID regulator, and when actual motion, operations staff can be according to different situations, artificial setting biasing, calculate output control instruction carry out averagely after and meanwhile send to #1 high and add A hydrophobic to outer steam cooler regulating valve VW1AAdd B hydrophobic to outer steam cooler regulating valve with #1 highVW1B, two valves, which receive, to be instructed unanimously, is kept strokes so that two valves are in control same parameters " outer steam cooler liquid level LW" when, joint, synchronous control are simple, accurate.
Description
Technical field
The utility model is related to field of thermal power, more particularly to the control of a kind of outer steam cooler heat regenerative system fills
It sets.
Background technology
Outer steam cooler heat regenerative system is exactly the high degree of superheat steam extraction heating HP heater drainage using steam turbine, hydrophobic
After being vaporized by heating, the steam of generation is for heating water supply.Fig. 1 is the structural representation of the outer steam cooler heat regenerative system
Figure.As shown in Figure 1, the outer steam cooler heat regenerative system, which is biserial height, adds configuration, the outer steam cooler heat regenerative system
Including：Outer steam cooler, #1 high-pressure heater A and #1 high-pressure heaters B.
The outer steam cooler heat regenerative system significantly reduces equipment and piping while improving thermodynamic system efficiency
Cost improves the benefit of unit, and the program is just gradually applied to thermal power plant, and has had certain applications case.
The existing control program of the outer steam cooler heat regenerative system, as shown in Figure 2.#1 high-pressure heaters A is hydrophobic
To outer steam cooler regulating valve VW1AAdd B hydrophobic to outer steam cooler regulating valve V with #1 highW1BJointly control external steaming
Vapour cooler liquid level LW, the instruction of two regulating valves is independently of each other.In addition, #1 high-pressure heater A liquid levels are hydrophobic by #1 high-pressure heaters A
Regulating valve V1AIt adjusts, #1 high-pressure heater A Liquid level figures are as shown in Figure 3.#1 high adds B liquid levels hydrophobic by #1 high-pressure heaters B
Regulating valve V1BIt adjusts, control mode is identical as #1 high-pressure heaters A, and control figure is omited.
By practice summary, there is problems in the prior art：
1) #1 high adds A hydrophobic to outer steam cooler regulating valve VW1AAdd B hydrophobic to outer steam cooler tune with #1 high
Save valve VW1BWhen controlling outer steam cooler liquid level LW, two valves are mutual indepedent so that are easy to interfere between each other so that
Outer steam cooler liquid level LW adjusts fluctuation greatly, and stability is poor.
2) #1 high-pressure heaters A Liquid levels only depend on #1 high-pressure heater A drain regulating valves V1AIt adjusts so that hydrophobic to outer
Setting the shunting of steam condenser cannot be tracked in real time, outer steam cooler liquid level LWTo #1 high-pressure heater A liquid levels
L1AInfluence cannot instruct #1 high-pressure heater A drain regulating valves V1AAction so that #1 high-pressure heater A liquid levels L1AControl
System there are it is prodigious lag and it is unstable.
3) this outer steam cooler heat regenerative system is that biserial height adds configuration, for the balance of system, needs efficiently to protect
What card biserial height added synchronizes consistent operation, this just high to two plus water level synchronous balance control is put forward higher requirements, and existing skill
Art scheme does not have the measure of this aspect.
Invention content
The purpose of this utility model is to provide a kind of control devices of outer steam cooler heat regenerative system, for solving
Control outer steam cooler liquid level and high-pressure heater liquid level are difficult to be uniformly coordinated and the high liquid feeding position equilibrium problem of biserial.
In order to solve the above technical problems, the embodiment of the utility model discloses a kind of outer steam cooler backheat system
The control device of system, the outer steam cooler heat regenerative system include：Outer steam cooler, #1 high-pressure heaters A and #1 high
Pressure heater B, the control device include：First feedback unit, the first subtracter, the first PID regulator, divider and first
Control unit；
The output end of first feedback unit is connect with the input terminal of first subtracter, first subtracter
Output end is connect with the input terminal of first PID regulator, output end and the divider of first PID regulator
Input terminal connects, and the output end of the divider is connect with the input terminal of first control unit, first control unit
Output end respectively with the #1 high-pressure heaters A to outer steam cooler regulating valve VW1AWith the #1 high-pressure heaters B
To outer steam cooler regulating valve VW1BConnection；
First feedback unit, for generating the outer steam cooler according to the outer steam cooler liquid level
The value of feedback of liquid level, and export to first subtracter；
First subtracter, the setting value and the external steam for calculating the outer steam cooler liquid level are cold
But the difference of the value of feedback of device liquid level is exported as the first difference, and by first difference to first PID regulator；
First PID regulator for first difference to be carried out PID control, and exports the first PID control knot
Fruit gives the divider；
The divider for the first PID control result to be divided into two parts, and exports result to described first
Control unit；
First control unit, for generating the outer steam cooler liquid according to the output result of the divider
Position control instruction, and #1 high-pressure heaters A described in synchronous control respectively is instructed according to the outer steam cooler Liquid level
To outer steam cooler regulating valve VW1AWith the #1 high-pressure heaters B to outer steam cooler regulating valve VW1B, to control
Make the outer steam cooler liquid level.
Compared with prior art, the main distinction and its effect are the embodiment of the utility model：
#1 high-pressure heaters A is hydrophobic to outer steam cooler regulating valve VW1AIt is hydrophobic to external with #1 high-pressure heaters B
Steam condenser regulating valve VW1B, two valves reception control instruction is consistent, keeps strokes so that two valves are " external in control same parameters
Steam condenser liquid level LW" when, joint, synchronous control are simple, accurate.
Further, #1 high-pressure heaters A drain regulating valves V1AAdjust #1 high-pressure heater A liquid levels L1AIt introduces based on outer
The hydrophobic shunt influence for setting the variation of steam condenser liquid level had not only ensured the operational efficiency and stabilization of heat regenerative system, but also has made control
Mutually coordinated, the stability and high efficiency executed.
Further, consistent operation is synchronized for guarantee biserial high-pressure heater, two hyperbaric heatings is introduced in control program
The control of device level imbalance so that system balancing is steadily run.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of outer steam cooler heat regenerative system；
Fig. 2 is a kind of schematic diagram of the control program of outer steam cooler heat regenerative system in the prior art；
Fig. 3 is a kind of control program of outer steam cooler heat regenerative system mesohigh heater liquid level in the prior art
Schematic diagram；
Fig. 4 be the utility model embodiment in a kind of outer steam cooler heat regenerative system control program signal
Figure；
Fig. 5 be the utility model embodiment in a kind of outer steam cooler heat regenerative system mesohigh heater liquid level
Control program schematic diagram；
Fig. 6 be the utility model embodiment in a kind of structure of the control device of outer steam cooler heat regenerative system
Schematic diagram；
Fig. 7 be the utility model embodiment in a kind of outer steam cooler heat regenerative system mesohigh heater liquid level
Control device structural schematic diagram.
Specific implementation mode
In the following description, in order to make the reader understand this application better, many technical details are proposed.But this
The those of ordinary skill in field is appreciated that even if without these technical details and many variations based on the following respective embodiments
And modification, each claim of the application technical solution claimed can also be realized.
It is new to this practicality below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
The embodiment of type is described in further detail.
The embodiment of the utility model is related to a kind of control device of outer steam cooler heat regenerative system.Fig. 6 is this
The structural schematic diagram of the control device of outer steam cooler heat regenerative system, Fig. 7 are # in the outer steam cooler heat regenerative system
The structural schematic diagram of the control device of 1 high-pressure heater A liquid levels.
As shown in Figure 1, the outer steam cooler heat regenerative system includes：Outer steam cooler, #1 high-pressure heaters A
With #1 high-pressure heaters B.
Specifically, as shown in fig. 6, the control device of the outer steam cooler heat regenerative system includes：
First feedback unit, the first subtracter, the first PID regulator, divider and the first control unit；
The output end of first feedback unit is connect with the input terminal of the first subtracter, the output end of the first subtracter and first
The input terminal of PID regulator connects, and the output end of the first PID regulator and the input terminal of divider connect, the output of divider
End is connect with the input terminal of the first control unit, the output end of the first control unit respectively with #1 high-pressure heaters A to external steaming
Vapour cooler regulating valve VW1AWith #1 high-pressure heaters B to outer steam cooler regulating valve VW1BConnection；
First feedback unit, for generating the anti-of the outer steam cooler liquid level according to outer steam cooler liquid level
Feedback value, and export to the first subtracter；
It should be noted that in the embodiments of the present invention, it is preferable that feedback unit can be advanced or stagnant by having
The module of function is realized afterwards.
First subtracter, for calculating the anti-of the setting value of outer steam cooler liquid level and outer steam cooler liquid level
The difference of feedback value is exported as the first difference, and by the first difference to the first PID regulator；
First PID regulator for the first difference to be carried out PID control, and exports the first PID control result to division
Device；
Divider for the first PID control result to be divided into two parts, and exports result to the first control unit；
First control unit, for generating the instruction of outer steam cooler Liquid level according to the output result of divider,
And instruct difference synchronous control #1 high-pressure heaters A to outer steam cooler tune according to outer steam cooler Liquid level
Save valve VW1AWith #1 high-pressure heaters B to outer steam cooler regulating valve VW1B, to control outer steam cooler liquid level.
In the present embodiment, it is preferable that further include：First adder, the input terminal of the first adder and the first PID
The output end of adjuster connects, and the output end of the first adder and the input terminal of divider connect；
First adder, for the first PID control result to be added with preset first bias, and will add up
As a result it exports to divider；
Divider, for the output result of first adder to be divided into two parts, and it is single to the first control to export result
Member.
As shown in figure 4, outer steam cooler liquid level LWThe difference of setting value and value of feedback is sent into PID regulator, practical to transport
When row, biasing can be arranged according to different situations in operations staff, and the control instruction for calculating output is carried out averagely rear while being sent to #1
Height plus A are hydrophobic to outer steam cooler regulating valve VW1AAdd B hydrophobic to outer steam cooler regulating valve V with #1 highW1B, two
Valve receives instruction unanimously, keeps strokes so that two valves are in control same parameters " outer steam cooler liquid level LW" when, joint,
Synchronous control is simple, accurate.
Further, it is preferable to which ground, in the present embodiment, the control device of the outer steam cooler heat regenerative system also wrap
It includes：The control device of the control device and #1 high-pressure heater B liquid levels of #1 high-pressure heater A liquid levels.
Specifically, as shown in fig. 7, the control device of #1 high-pressure heater A liquid levels includes：Second feedback unit A, second
Subtracter A, the second PID regulator A, third subtracter A and the second control unit A；
The output end of second feedback unit A is connect with the input terminal of the second subtracter A, the output end of the second subtracter A with
The input terminal of second PID regulator A connects, and the output end of the second PID regulator A is connect with the input terminal of third subtracter A, the
The output end of three subtracter A is connect with the input terminal of the second control unit A, and output end and the #1 high pressures of the second control unit A add
The drain regulating valve V of hot device A1AConnection；
Second feedback unit A, for according to #1 high-pressure heater A liquid levels L1AGenerate #1 high-pressure heater A liquid levels L1AIt is anti-
Feedback value, and export to the second subtracter A；
Second subtracter A, for calculating #1 high-pressure heater A liquid levels L1ASetting value and #1 high-pressure heater A liquid levels L1A
Value of feedback difference, exported to the second PID regulator A as the second difference A, and by the second difference A；
Second PID regulator A for the second difference A to be carried out PID control, and export the 2nd PID control results A to the
Three subtracter A；
Third subtracter A changes factor to affect for calculating the second PID control result A with outer steam cooler liquid level
Difference, exported to the second control unit A as third difference A, and by third difference A；
Second control unit A, for generating the instruction of #1 high-pressure heater A Liquid levels according to third difference A, and according to #1
The drain regulating valve V of high-pressure heater A Liquid levels instruction control #1 high-pressure heaters A1A, to #1 high-pressure heater A liquid levels
L1A。
As shown in figure 5, the difference of high-pressure heater level set value and value of feedback is sent into PID regulator, PID regulator
Hydrophobic shunting is made in output.By taking #1 high-pressure heaters A as an example, outer steam cooler liquid level is considered here and is changed and corresponding #1
Height plus the hydrophobic hydrophobic shunt volumes to outer steam cooler of A, since #1 high adds A hydrophobic to outer steam cooler regulating valve
VW1AAdd B hydrophobic to outer steam cooler regulating valve V with #1 highW1BUsing joint, synchronous control so that external steam is cold here
But the variation of device liquid level, which calculates corresponding shunt volume, becomes simple, accurate.It only needs to change liquid level to correspond to flow value and be averaged and be used as
The influence of hydrophobic shunting.The influence of hydrophobic shunting is introduced at this so that #1 high adds A liquid levels L1AControl can early introduce shunting
Influence acceleration-controlled system the corresponding time, meanwhile, also effectively eliminate system disturbance caused by hydrophobic shunting.
In addition, in the present embodiment, it is preferable that further include：Judging unit A and second adder A；
The output end of judging unit A is connect with second adder A, and the input terminal of second adder A is with third subtracter A's
Output end connects, and the output end of second adder A is connect with the input terminal of the second control unit A；
Judging unit A, for judging #1 high-pressure heater A liquid levels L1AWith #1 high-pressure heater B liquid levels L1BDifference it is whether big
In first threshold.That is shown in Fig. 5, judge L1A-L1B﹥=setting value；
When judging #1 high-pressure heater A liquid levels L1AWith the #1 high-pressure heaters B liquid levels L1BDifference be more than first threshold
When, judging unit A sends triggering command to second adder A.
Second adder A, for after the triggering command for receiving judging unit A, by third difference with it is preset
Second bias A is added, and the result that will add up is exported to the second control unit A.
Then, the second control unit A, according to the output of second adder A as a result, generating #1 high-pressure heater A liquid level controls
System instruction, and the drain regulating valve V for controlling #1 high-pressure heaters A is instructed according to #1 high-pressure heater A Liquid levels1A, to #1
High-pressure heater A liquid levels L1A。
This outer steam cooler heat regenerative system is that biserial height adds configuration, for the balance of system, needs efficiently to ensure
What biserial height added synchronizes consistent operation, therefore for HP heater drainage, i.e., to keep the synchronization of the two.For this purpose, the controlling party
Two high plus level imbalance decision conditions are introduced in case can take setting to bias when the two level imbalance is more than setting value
Mode adjusts two valves, it is made to restore synchronous operation.
Similarly, the control device of #1 high-pressure heaters B liquid levels includes：Second feedback unit B, the second subtracter B, second
PID regulator B, third subtracter B and the second control unit B；
The output end of second feedback unit B is connect with the input terminal of the second subtracter B, the output end of the second subtracter B with
The input terminal of second PID regulator B connects, and the output end of the second PID regulator B is connect with the input terminal of third subtracter B, the
The output end of three subtracter B is connect with the input terminal of the second control unit B, and output end and the #1 high pressures of the second control unit B add
The drain regulating valve V of hot device B1BConnection；
Second feedback unit B, for according to #1 high-pressure heater B liquid levels L1BGenerate #1 high-pressure heater B liquid levels L1BIt is anti-
Feedback value, and export to the second subtracter B；
Second subtracter B, for calculating #1 high-pressure heater B liquid levels L1BSetting value and #1 high-pressure heater B liquid levels L1B
Value of feedback difference, exported to the second PID regulator B as the second difference B, and by the second difference B；
Second PID regulator B for the second difference B to be carried out PID control, and export the 2nd PID control results B to the
Three subtracter B；
Third subtracter B changes factor to affect for calculating the second PID control result B with outer steam cooler liquid level
Difference, exported to the second control unit B as third difference B, and by third difference B；
Second control unit B is instructed for generating the #1 high-pressure heaters B Liquid levels according to third difference B, and root
The drain regulating valve V of control #1 high-pressure heaters B is instructed according to the #1 high-pressure heaters B Liquid levels1B, to which #1 high pressures add
Hot device B liquid levels L1B。
In addition, in the present embodiment, it is preferable that further include：Judging unit B and second adder B；
The output end of judging unit B is connect with second adder B, and the input terminal of second adder B is with third subtracter B's
Output end connects, and the output end of second adder B is connect with the input terminal of the second control unit B；
Judging unit B, for judging #1 high-pressure heater A liquid levels L1AWith #1 high-pressure heater B liquid levels L1BDifference it is whether big
In first threshold；
When judging #1 high-pressure heater A liquid levels L1AWith the #1 high-pressure heaters B liquid levels L1BDifference be more than first threshold
When, judging unit B sends triggering command to second adder B.
Second adder B, for after the triggering command for receiving judging unit B, by third difference with it is preset
Second bias B is added, and the result that will add up is exported to the second control unit B.
Then, the second control unit B, according to the output of second adder B as a result, generating #1 high-pressure heater B liquid level controls
System instruction, and the drain regulating valve V for controlling #1 high-pressure heaters B is instructed according to #1 high-pressure heater B Liquid levels1B, to #1
High-pressure heater B liquid levels L1B。
#1 high adds A hydrophobic to outer steam cooler regulating valve VW1AAdd B hydrophobic with #1 high to adjust to outer steam cooler
Valve VW1BSynchronous control outer steam cooler liquid level LW, two valves, which receive, to be instructed unanimously, is kept strokes so that two valves are same in control
One parameter " outer steam cooler liquid level LW" when, it is simple, accurate.This control program makes #1 high add hydrophobic to the external steam of A
Cooler regulating valve VW1AAdd B hydrophobic to outer steam cooler regulating valve V with #1 highW1BTwo valves have the effect of " integrated bivalve ",
It is mutually coordinated difficult when body controls to solve the problems, such as that same controlled parameter is executed by two.
In order to preferably play the system effectiveness of the outer steam cooler heat regenerative system, this control program takes with height
Add the hydrophobic thinking led to outer steam cooler amount head, enough, suitably height adds to ensure to make full use of steam extraction heat
Hydrophobic amount excludes the high liquid feeding position variation that the hydrophobic amount influences, watches duty by HP heater drainage valve, this kind design both ensures heat regenerative system
Operational efficiency and stabilization, and make control execute mutually coordinated, stability and high efficiency.
The biserial height of the outer steam cooler heat regenerative system adds allocation plan to propose the synchronous operation that biserial height adds to want
It asks, this control program introduces the control means that biserial height adds level imbalance so that system balancing is steadily run.
It should be noted that the utility model needs to be protected to be by the first feedback unit, the first subtracter, the first PID
The control of the outer steam cooler heat regenerative system of the compositions such as adjuster, first adder, divider and the first control unit fills
This entirety is set, which can reach realization beneficial effect.Also, the first feedback unit, the first subtracter, first
Each units modules such as PID regulator, first adder, divider and the first control unit are all ripe skills in the prior art
Art is no longer expanded on further herein.
It should be noted that each unit mentioned in each device embodiments of the utility model is all logic unit, in object
In reason, a logic unit can be a physical unit, can also be a part for a physical unit, can also be with multiple
The combination of physical unit realizes that the Physical realization of these logic units itself is not most important, these logic units
The combination for the function of being realized is only the key for solving the technical issues of the utility model is proposed.In addition, in order to protrude this reality
With novel innovative part, the above-mentioned each device embodiments of the utility model there is no by with solve what the utility model was proposed
The less close unit of technical problem relationship introduces, this does not indicate above equipment embodiment and there is no other units.
It should be noted that in the claim and specification of this patent, such as first and second or the like relationship
Term is only used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying
There are any actual relationship or orders between these entities or operation.Moreover, the terms "include", "comprise" or its
Any other variant is intended to non-exclusive inclusion so that including the processes of a series of elements, method, article or
Equipment includes not only those elements, but also includes other elements that are not explicitly listed, or further include for this process,
Method, article or the intrinsic element of equipment.In the absence of more restrictions, being wanted by what sentence " including one " limited
Element, it is not excluded that there is also other identical elements in the process, method, article or apparatus that includes the element.
Although by referring to certain preferred embodiments of the utility model, the utility model has been shown and
Description, but it will be understood by those skilled in the art that can to it, various changes can be made in the form and details, without inclined
Spirit and scope from the utility model.
Claims (6)
1. a kind of control device of outer steam cooler heat regenerative system, the outer steam cooler heat regenerative system include：It is external
Steam condenser, #1 high-pressure heater A and #1 high-pressure heaters B, which is characterized in that the control device includes：First feedback
Unit, the first subtracter, the first PID regulator, divider and the first control unit；
The output end of first feedback unit is connect with the input terminal of first subtracter, the output of first subtracter
End is connect with the input terminal of first PID regulator, the input of the output end and the divider of first PID regulator
End connection, the output end of the divider connect with the input terminal of first control unit, first control unit it is defeated
Outlet respectively with the #1 high-pressure heaters A to outer steam cooler regulating valve VW1AWith the #1 high-pressure heaters B to external
Steam condenser regulating valve VW1BConnection；
First feedback unit, for generating the outer steam cooler liquid level according to the outer steam cooler liquid level
Value of feedback, and export to first subtracter；
First subtracter, the setting value for calculating the outer steam cooler liquid level and the outer steam cooler
The difference of the value of feedback of liquid level is exported as the first difference, and by first difference to first PID regulator；
First PID regulator for first difference to be carried out PID control, and exports the first PID control result to institute
State divider；
The divider for the first PID control result to be divided into two parts, and exports result and is controlled to described first
Unit；
First control unit, for generating the outer steam cooler liquid level control according to the output result of the divider
System instruction, and according to the outer steam cooler Liquid level instruct respectively #1 high-pressure heaters A described in synchronous control to outer
Set steam condenser regulating valve VW1AWith the #1 high-pressure heaters B to outer steam cooler regulating valve VW1B, to control
State outer steam cooler liquid level.
2. the control device of outer steam cooler heat regenerative system according to claim 1, which is characterized in that further include：
Second feedback unit A, the second subtracter A, the second PID regulator A, third subtracter A and the second control unit A；
The output end of the second feedback unit A is connect with the input terminal of the second subtracter A, the second subtracter A's
Output end is connect with the input terminal of the second PID regulator A, and the output end of the second PID regulator A subtracts with the third
The input terminal of musical instruments used in a Buddhist or Taoist mass A connects, and the output end of the third subtracter A is connect with the input terminal of the second control unit A, described
The drain regulating valve V of the output end of second control unit A and the #1 high-pressure heaters A1AConnection；
The second feedback unit A, for generating the #1 high-pressure heaters A liquid levels according to the #1 high-pressure heaters A liquid levels
Value of feedback, and export to the second subtracter A；
The second subtracter A, the setting value for calculating the #1 high-pressure heaters A liquid levels and the #1 high-pressure heaters A
The difference of the value of feedback of liquid level is exported as the second difference A, and by the second difference A to the second PID regulator A；
The second PID regulator A for the second difference A to be carried out PID control, and exports the second PID control result A
To the third subtracter A；
The third subtracter A changes for calculating the second PID control result A with the outer steam cooler liquid level
The difference of factor to affect is exported as third difference A, and by the third difference A to the second control unit A；
The second control unit A is instructed for generating the #1 high-pressure heaters A Liquid levels according to the third difference A,
And the drain regulating valve of the #1 high-pressure heaters A is controlled according to #1 high-pressure heaters A Liquid levels instruction, to institute
State #1 high-pressure heater A liquid levels.
3. the control device of outer steam cooler heat regenerative system according to claim 1, which is characterized in that further include：
Second feedback unit B, the second subtracter B, the second PID regulator B, third subtracter B and the second control unit B；
The output end of the second feedback unit B is connect with the input terminal of the second subtracter B, the second subtracter B's
Output end is connect with the input terminal of the second PID regulator B, and the output end of the second PID regulator B subtracts with the third
The input terminal of musical instruments used in a Buddhist or Taoist mass B connects, and the output end of the third subtracter B is connect with the input terminal of the second control unit B, described
The drain regulating valve V of the output end of second control unit B and the #1 high-pressure heaters B1BConnection；
The second feedback unit B, for generating the #1 high-pressure heaters B liquid levels according to the #1 high-pressure heaters B liquid levels
Value of feedback, and export to the second subtracter B；
The second subtracter B, the setting value for calculating the #1 high-pressure heaters B liquid levels and the #1 high-pressure heaters B
The difference of the value of feedback of liquid level is exported as the second difference B, and by the second difference B to the second PID regulator B；
The second PID regulator B for the second difference B to be carried out PID control, and exports the second PID control result B
To the third subtracter B；
The third subtracter B changes for calculating the second PID control result B with the outer steam cooler liquid level
The difference of factor to affect is exported as third difference B, and by the third difference B to the second control unit B；
The second control unit B is instructed for generating the #1 high-pressure heaters B Liquid levels according to the third difference B,
And the drain regulating valve of the #1 high-pressure heaters B is controlled according to #1 high-pressure heaters B Liquid levels instruction, to institute
State #1 high-pressure heater B liquid levels.
4. the control device of outer steam cooler heat regenerative system according to claim 2 or 3, which is characterized in that also wrap
It includes：First adder, the input terminal of the first adder are connect with the output end of first PID regulator, first addition
The output end of device is connect with the input terminal of the divider；
The first adder, for the first PID control result to be added with preset first bias, and by phase
The result added is exported to the divider；
The divider for the output result of the first adder to be divided into two parts, and exports result to described the
One control unit.
5. the control device of outer steam cooler heat regenerative system according to claim 4, which is characterized in that further include：
Judging unit A and second adder A；
The output end of the judging unit A is connect with the second adder A, the input terminal of the second adder A with it is described
The output end of third subtracter A connects, and the output end of the second adder A and the input terminal of the second control unit A connect
It connects；
The judging unit A, for judging that the difference of the #1 high-pressure heaters A liquid levels and the #1 high-pressure heaters B liquid levels is
It is no to be more than first threshold；
It is described when judging that the difference of the #1 high-pressure heaters A liquid levels and the #1 high-pressure heaters B liquid levels is more than first threshold
Judging unit A sends triggering command to the second adder A；
The second adder A, for after the triggering command for receiving the judging unit A, by the third difference with it is pre-
The the second bias A first set is added, and the result that will add up is exported to the second control unit A.
6. the control device of outer steam cooler heat regenerative system according to claim 5, which is characterized in that further include：
Judging unit B and second adder B；
The output end of the judging unit B is connect with the second adder B, the input terminal of the second adder B with it is described
The output end of third subtracter B connects, and the output end of the second adder B and the input terminal of the second control unit B connect
It connects；
The judging unit B, for judging that the difference of the #1 high-pressure heaters A liquid levels and the #1 high-pressure heaters B liquid levels is
It is no to be more than first threshold；
It is described when judging that the difference of the #1 high-pressure heaters A liquid levels and the #1 high-pressure heaters B liquid levels is more than first threshold
Judging unit B sends triggering command to the second adder B；
The second adder B, for after the triggering command for receiving the judging unit B, by the third difference with it is pre-
The the second bias B first set is added, and the result that will add up is exported to the second control unit B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721651466.3U CN207936047U (en) | 2017-12-01 | 2017-12-01 | The control device of outer steam cooler heat regenerative system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721651466.3U CN207936047U (en) | 2017-12-01 | 2017-12-01 | The control device of outer steam cooler heat regenerative system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207936047U true CN207936047U (en) | 2018-10-02 |
Family
ID=63645862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721651466.3U Withdrawn - After Issue CN207936047U (en) | 2017-12-01 | 2017-12-01 | The control device of outer steam cooler heat regenerative system |
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| Country | Link |
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| CN (1) | CN207936047U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869708A (en) * | 2017-12-01 | 2019-06-11 | 中国电力工程顾问集团华东电力设计院有限公司 | The control method and its device of outer steam cooler heat regenerative system |
-
2017
- 2017-12-01 CN CN201721651466.3U patent/CN207936047U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869708A (en) * | 2017-12-01 | 2019-06-11 | 中国电力工程顾问集团华东电力设计院有限公司 | The control method and its device of outer steam cooler heat regenerative system |
| CN109869708B (en) * | 2017-12-01 | 2023-12-15 | 中国电力工程顾问集团华东电力设计院有限公司 | Control method and device for heat regeneration system of external steam cooler |
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