CN114115367B - Control method and device for water supply flow of direct-current furnace - Google Patents
Control method and device for water supply flow of direct-current furnace Download PDFInfo
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- CN114115367B CN114115367B CN202111405886.4A CN202111405886A CN114115367B CN 114115367 B CN114115367 B CN 114115367B CN 202111405886 A CN202111405886 A CN 202111405886A CN 114115367 B CN114115367 B CN 114115367B
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- 230000001105 regulatory effect Effects 0.000 claims description 15
- 230000001276 controlling effect Effects 0.000 claims description 10
- 101150109471 PID2 gene Proteins 0.000 description 6
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- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/06—Control of flow characterised by the use of electric means
- G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
- G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
- G05D7/0635—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on throttling means
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Abstract
The application discloses a control method and a device for water supply flow of a direct current furnace, wherein the method comprises the following steps: under the condition that the running state of the middle point controller of the water supply control system is a manual state, acquiring a first flow value input from the outside; outputting the first flow value to a mid-point regulator of the feedwater control system, instructing the mid-point regulator to regulate the feedwater flow of the direct current furnace to the first flow value.
Description
Technical Field
The application relates to the technical field of boiler control of thermal power plants, in particular to a method and a device for controlling water supply flow of a direct-current boiler.
Background
The automatic control of water supply is an important loop in the control of the supercritical once-through furnace, and plays a role in the safe and economic operation of the boiler.
The automatic control of water supply is not good, so that the steam quality is greatly influenced, and even the water interruption of a boiler, the ultra-temperature pipe wall and the pipe explosion are caused, so that the safety and the economical operation of a unit are greatly endangered. In the existing automatic water supply control system, the set value of the steam pump control system in the water supply control system is generally a set value of water supply flow generated by correcting and outputting the water ratio and the middle point, when the automatic water supply control system is operated in a wet state, the set value of the water supply flow is a set value of the water ratio and the manual output value of the middle point control circuit at the moment, the function output of the water ratio is continuously changed along with the fuel quantity due to the continuous change of the fuel quantity in the load-lifting stage, and the water supply flow is unchanged when the automatic water supply control is in the wet state, so that shutdown accidents caused by poor automatic water supply control and improper operation are easy to occur.
Disclosure of Invention
The application discloses a control method and a device for water supply flow of a direct current furnace, which are used for solving the problem that the water supply flow of the traditional unit cannot be adjusted in a wet running state.
In order to solve the problems, the application adopts the following technical scheme:
In a first aspect, an embodiment of the present application discloses a method for controlling a feedwater flow of a direct current furnace, including: under the condition that the running state of the middle point controller of the water supply control system is a manual state, acquiring a first flow value input from the outside; outputting the first flow value to a mid-point regulator of the feedwater control system, instructing the mid-point regulator to regulate the feedwater flow of the direct current furnace to the first flow value.
In a second aspect, an embodiment of the present application discloses a control device for a water supply flow rate of a direct current furnace, including: the manual setting module of intermediate regulation module and feedwater flow, the intermediate regulation module includes: the middle adjusting module is used for acquiring a first flow value input from the outside under the condition that the running state of a middle point controller of the water supply control system is a manual state; outputting the first flow value to a mid-point regulator of the feedwater control system, instructing the mid-point regulator to regulate the feedwater flow of the direct current furnace to the first flow value; the feedwater flow manual setting module is used for receiving the first flow value input from the outside.
In a third aspect, embodiments of the present application provide a readable storage medium having stored thereon a program or instructions which when executed by a processor perform the steps of the method according to the first aspect.
In a fourth aspect, an embodiment of the present application provides a chip, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being configured to execute a program or instructions to implement the steps of the method according to the first aspect.
The technical scheme adopted by the application can achieve the following beneficial effects:
The embodiment of the application discloses a control method of water supply flow of a direct current furnace, which is characterized in that under the condition that the operation state of a middle point controller of a water supply control system is a manual state, an externally input first flow value is obtained, the first flow value is output to the middle point regulator of the water supply control system, the middle point regulator is instructed to regulate the water supply flow of the direct current furnace to the first flow value, so that under the condition that the middle point controller is in the manual state, the water supply flow of the direct current furnace can be manually set, the manually set first flow value is input to the middle point regulator, the middle point regulator can regulate the water supply flow of the direct current furnace to the first flow value, and thus, under the condition of wet operation, the set value of the water supply flow of the direct current furnace can be regulated, and the operation of the water supply flow can be maintained. That is, the control method of the water supply flow of the direct current furnace disclosed by the embodiment of the application can solve the problem that the water supply flow of the traditional unit cannot be adjusted in a wet running state.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a schematic flow chart of a method for controlling the water supply flow of a direct current furnace according to an embodiment of the present application;
FIG. 2 is a schematic flow chart of another method for controlling the water supply flow of a direct current furnace according to an embodiment of the present application;
FIG. 3 is a schematic control diagram of a control system for water supply flow of a direct current furnace according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a control device for water supply flow of a direct current furnace according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
The method and the device for controlling the water supply flow of the direct current furnace provided by the embodiment of the application are described in detail by specific embodiments and application scenes thereof with reference to the accompanying drawings.
Fig. 1 shows a flow diagram of a control method of water supply flow of a direct current furnace, and as shown in fig. 1, an embodiment of the application discloses a control method of water supply flow of a direct current furnace, which comprises the following steps:
s110: when the operation state of the intermediate point controller of the water supply control system is a manual state, a first flow value input from the outside is acquired.
Under the condition that the running state of the intermediate point controller is a manual state, the first flow value input from the outside can be acquired, and the first flow value can be manually set by an operator according to the actual working condition of the water supply control system.
S120: outputting the first flow value to a mid-point regulator of the feedwater control system, instructing the mid-point regulator to regulate the feedwater flow of the direct current furnace to the first flow value.
When the intermediate point regulator of the water supply control system receives the first flow value, the water supply flow of the direct-current furnace can be regulated through the intermediate point regulator, and the water supply flow of the direct-current furnace is regulated to the first flow value.
It should be noted that the control method of the water supply flow of the direct current furnace disclosed by the embodiment of the application is applied to the working condition that the water supply control system runs in a wet state.
The embodiment of the application discloses a control method of water supply flow of a direct current furnace, which is characterized in that under the condition that the operation state of a middle point controller of a water supply control system is a manual state, an externally input first flow value is obtained, the first flow value is output to the middle point regulator of the water supply control system, the middle point regulator is instructed to regulate the water supply flow of the direct current furnace to the first flow value, so that under the condition that the middle point controller is in the manual state, the water supply flow of the direct current furnace can be manually set, the manually set first flow value is input to the middle point regulator, the middle point regulator can regulate the water supply flow of the direct current furnace to the first flow value, and thus, under the condition of wet operation, the set value of the water supply flow of the direct current furnace can be regulated, and the operation of the water supply flow can be maintained. That is, the control method of the water supply flow of the direct current furnace disclosed by the embodiment of the application can solve the problem that the water supply flow of the traditional unit cannot be adjusted in a wet running state.
For example, a manual feedwater flow setting module and an intermediate adjustment module may be provided in the feedwater control system, and the intermediate adjustment module may include: the switching value and the switching block can receive the first flow value input from the outside through the water supply flow manual setting module when the switching value detects that the running state of the intermediate point controller is a manual state, and can acquire the first flow value input from the outside through the switching block and output the first flow value to the intermediate point regulator of the water supply control system, so that the intermediate point regulator can be instructed to regulate the water supply flow of the direct current furnace, the water supply flow of the direct current furnace can be regulated to the first flow value, and the regulation of the water supply flow of the direct current furnace under wet running can be realized. When the water supply flow of the direct current furnace is adjusted to be a first flow value, and the water supply controller in the water supply control system is in an automatic state, the middle point regulator can transmit the adjusted water supply flow value to the water supply controller of the water supply control system, so that the water supply controller can send a water supply main control instruction to the direct current furnace based on the adjusted water supply flow value, and the water supply flow value of the direct current furnace can be the first flow value.
In one implementation, fig. 2 shows a schematic flow chart of another method for supplying water to a direct current furnace, and as shown in fig. 2, the method may further include the following steps:
s210: and under the condition that the running state of the intermediate point controller is an automatic state, acquiring a second flow value output by an adding block of the water supply control system.
S220: outputting the second flow value to a mid-point regulator of the feedwater control system, instructing the mid-point regulator to regulate the feedwater flow of the direct current furnace to the second flow value.
In this way, when the operation state of the intermediate point controller is an automatic state, the water supply flow rate can be adjusted by the intermediate point adjuster, so that the water supply flow rate can be adjusted to the second flow rate value output by the adding block, and the water supply flow rate can be adjusted when the operation state of the intermediate point controller is an automatic state.
For example, a manual feedwater flow setting module and an intermediate adjustment module may be provided in a feedwater control system, the intermediate adjustment module may include: the system comprises a switching value and a switching block, wherein the switching value can be used for detecting the running state of the intermediate point controller, the switching block can be used for acquiring a second flow value output by an addition block of the water supply control system under the condition that the running state of the intermediate point controller is in an automatic state, the sum of the output value of the intermediate point controller and the output value of a coal water ratio function block in the water supply control system can be used as the second flow value output by the addition block, the output value of the intermediate point controller under the condition that the intermediate point controller is in the automatic state can be a value output by a water supply flow regulator in the water supply control system according to the measured value of the intermediate point temperature and the intermediate point, and the intermediate point regulator can be used for regulating the water supply flow under the condition that the second flow value output by the switching block is received, so that the water supply flow of the direct-current furnace is regulated to the second flow value, and the water supply flow can be regulated. When the intermediate point regulator regulates the water supply flow rate to the second flow rate value, and the water supply controller of the water supply control system is in an automatic state, the intermediate point regulator can transmit the regulated water supply flow rate value to the water supply controller, so that the water supply controller can send a water supply main control instruction to the direct current furnace based on the regulated water supply flow rate value, and the water supply flow rate value of the direct current furnace can be the second flow rate value.
In one implementation, when the operation state of the intermediate point controller of the feedwater control system is a manual state, the method may include the steps of:
Step 1: and outputting a first value to a switching block by the switching value under the condition that the operation state of the intermediate point controller is detected to be the manual state, wherein the first value indicates that the operation state of the intermediate point controller is the manual state.
When the operation state of the intermediate point controller is detected to be the manual state, the switching value outputs a first value to the switching block, and at this time, the first value may be "0", and when the output value of the switching value is "0", the operation state of the intermediate point controller is detected to be the manual state. It should be noted that, the signal of the intermediate point controller may be transmitted to the switching value through the signal transmission line, so that the switching value may output a corresponding value according to the received signal transmitted by the intermediate point controller, and the output value is sent to the switching block, so that the switching block may perform a related operation according to the value sent by the switching value.
Step 2: the switching block outputs the first flow value input by a feedwater flow manual setting module of the feedwater control system to the midpoint regulator upon receiving the first value from the switching value, wherein the feedwater flow manual setting module is for receiving an external input.
When the switching block receives the first value transmitted by the switching value, that is, when the first value is "0", the switching block outputs the first flow value to the intermediate point regulator, so that the feedwater flow can be regulated. In this way, when the on-off output is 0, the unit can switch the output value of the switching block into the first flow value set by the manual feed water flow setting module, so that the feed water flow set value is the first flow value, the intermediate point regulator can regulate the feed water flow according to the first flow value, and the regulated feed water flow is sent to the feed water controller of the feed water control system, so that an operator can send a feed water main control instruction to the direct-current furnace through the feed water controller, and the feed water flow value of the direct-current furnace is the first flow value. In this way, the regulation of the feedwater flow can be achieved with the intermediate point controller in a manual state.
In one implementation, when the operation state of the intermediate point controller of the feedwater control system is an automatic state, the method for obtaining the second flow value output by the adding block of the feedwater control system may include the following steps:
Step 1: and outputting a second value to a switching block by the switching value under the condition that the running state of the intermediate point controller is detected to be the automatic state, wherein the second value indicates that the running state of the intermediate point controller is the automatic state.
The switching value may be "1" when the switching value is detected to be "1", and the switching value may be "1" when the operation state of the intermediate point controller is detected to be the automatic state, and the second value may be transmitted to the switching block, so that the switching block may perform the related operation according to the second value.
Step 2: the switching block outputs the second flow value input by the addition block to the intermediate point regulator in the case where the second value is received from the switching value.
When the switching block receives the second value transmitted by the switching value, that is, when the second value is "1", the switching block outputs the second flow value to the intermediate point regulator, so that the feedwater flow can be regulated. In this way, when the switching value output is "1", the unit can switch the output value of the switching block to the second flow value output by the adding block, and the water supply flow set value is the second flow value at this time, so that the intermediate point regulator can regulate the water supply flow according to the second flow value, and send the regulated water supply flow value to the water supply controller of the water supply control system, so that a user can send a water supply main control instruction to the direct current furnace through the water supply controller, and the water supply flow value of the direct current furnace is the second flow value. In this way, the regulation of the feedwater flow can be achieved with the intermediate point controller in an automatic state.
In one implementation, the method may further include: in the case where the operation state of the intermediate point controller is switched from the manual state to the automatic state, the second flow value initially output by the addition block is controlled to be the same as the first flow value externally input in the manual state.
When the operation state of the intermediate point controller is switched from the manual state to the automatic state, in order to ensure that the water supply control system can perform undisturbed switching when the intermediate point controller is put into the automatic state, the second flow value initially output by the adding block can be controlled to be the same as the first flow value externally input in the manual state, namely, the second flow value output by the adding block can be controlled to track the first flow value output by the water supply flow manual setting module. In this way, a water break of the boiler at the time of switching the intermediate point controller from the manual state to the automatic state can be avoided.
In one implementation, the method may further include: and when the operation state of the intermediate point controller is switched from the automatic state to the manual state, controlling the first flow value initially output by the water supply flow manual setting module of the water supply control system to be the same as the second flow value output by the adding block in the automatic state.
In order to ensure that the feedwater control system can perform undisturbed switching when the intermediate point controller is in an automatic state, the first flow value output by the feedwater flow manual setting module can be controlled to be the same as the second flow value output by the adding block in the automatic state under the condition that the operation state of the intermediate point controller is switched from the automatic state to the manual state, and then the output value of the feedwater flow manual setting module can be controlled to track the output value of the adding block. In this way, accidents occurring when the intermediate point controller is released from the automatic state can be avoided.
In a specific embodiment, as shown in fig. 3, fig. 3 shows a control logic diagram of a control system for a feedwater flow of a direct current furnace, in fig. 3, in a state that a unit is in wet operation, an operation state of MA1 (i.e., the above-mentioned intermediate point controller) may be detected through D1 (i.e., the above-mentioned switch value), in a case that the operation state of MA1 is detected as a manual state, TR1 (i.e., the above-mentioned switch block) outputs an N-terminal value, i.e., a first flow value outputted by ML1 (i.e., the above-mentioned feedwater flow manual setting module), i.e., a feedwater flow set value at this time is the first flow value, and the first flow value is sent to PID2 (i.e., the above-mentioned intermediate point regulator), so that the PID2 may adjust the feedwater flow to the first flow value, in a case that MA2 (i.e., the above-mentioned feedwater controller) is in an automatic state, the PID2 may send the adjusted feedwater flow value to MA2, and the MA2 may send the adjusted feedwater flow value to the direct current furnace as a first flow instruction according to the adjusted feedwater flow.
In the case that the operation state of MA1 is detected to be an automatic state, TR1 outputs a Y end value, that is, a second flow value output by SUM1 (that is, the above-described addition block), that is, the feedwater flow set value at this time is a second flow value, the second flow value is a SUM of an output value of MA1 and an f (x) value (that is, a value output by the above-described coal water ratio function block), and at this time, the output value of MA1 is an output value of PID1 (and the above-described feedwater flow regulator), the output value of PID1 is an output value obtained from the intermediate point set value and the intermediate point measurement value, and the f (x) value is a value obtained from a boiler main control command. The second flow value output by the Y end of TR1 is sent to PID2 (i.e., the above-described intermediate point regulator), so that PID2 can adjust the feedwater flow to the second flow value, and in the case where MA2 is in an automatic state, PID2 can send the adjusted feedwater flow value to MA2, and MA2 can send a feedwater master control instruction to the direct current furnace according to the adjusted feedwater flow value, so as to indicate that the feedwater flow of the direct current furnace is the second flow value.
In order to ensure undisturbed switching of the water supply control system when MA1 is put into automation, the second flow value output by SUM1 tracks the first flow value output by ML1, the output value of MA1 tracks the output value of SUM1, and the output value of SUM1 is the SUM of the f (x) values of the output value of MA1, so that at the moment, MA1 outputs a difference value between the output of trace ML1 and the f (x) value; in order to ensure undisturbed switching of the feedwater control system when MA1 excision is automatic, the output value of ML1 may track the output value of SUM 1.
By the mode, the water supply flow can be manually set under the wet running state of the conventional unit, the stable running of the water supply flow is maintained, and the water supply flow can be directly set according to actual requirements during accident handling by dividing the module into an automatic mode and a manual mode, so that the difficulty and the risk of water supply system control during accident handling can be reduced.
Based on the above-mentioned control method for the water supply flow rate of the direct current furnace, an embodiment of the present application discloses a control device 400 for the water supply flow rate of the direct current furnace, as shown in fig. 4, the device may include: a feedwater flow manual setting module 410 and an intermediate adjustment module 420, the intermediate adjustment module 420 comprising: switching value and a switching block, wherein,
The feedwater flow manual setting module 410 is configured to receive an externally input first flow value.
The middle adjusting module 420 is configured to obtain a first flow value input from the outside when the operation state of the middle point controller of the feedwater control system is a manual state; outputting the first flow value to a mid-point regulator of the feedwater control system, instructing the mid-point regulator to regulate the feedwater flow of the direct current furnace to the first flow value.
In an implementation manner, the intermediate adjusting module 420 is further configured to obtain a second flow value output by the adding block of the feedwater control system when the running state of the intermediate point controller is an automatic state; outputting the second flow value to a mid-point regulator of the feedwater control system, instructing the mid-point regulator to regulate the feedwater flow of the direct current furnace to the second flow value.
In one implementation, the intermediate adjustment module 420 obtains a first flow value of an external input when the operation state of the intermediate point controller of the feedwater control system is a manual state, including: outputting a first value to a switching block by the switching value under the condition that the running state of the intermediate point controller is detected to be a manual state, wherein the first value indicates that the running state of the intermediate point controller is the manual state; upon receiving the first value from the switching value, the switching block outputs the first flow value input by a feedwater flow manual setting module 410 of the feedwater control system to the midpoint regulator.
In one implementation, the intermediate adjustment module 420 obtains a second flow value output by the adding block of the feedwater control system when the operation state of the intermediate point controller is an automatic state, including: outputting a second value to a switching block by the switching value under the condition that the running state of the intermediate point controller is detected to be the automatic state, wherein the second value indicates that the running state of the intermediate point controller is the automatic state; the switching block outputs the second flow value input by the addition block to the intermediate point regulator in the case where the second value is received from the switching value.
In one implementation, the apparatus may further include:
And a first control module for controlling the second flow value initially output by the addition block to be the same as the first flow value externally input in the manual state in the case where the operation state of the intermediate point controller is switched from the manual state to the automatic state.
In one implementation, the apparatus may further include:
And the second control module is used for controlling the first flow value initially output by the manual feed water flow setting module of the feed water control system to be the same as the second flow value output by the adding block in the automatic state under the condition that the operation state of the intermediate point controller is switched from the automatic state to the manual state.
The control device for the water supply flow of the direct current furnace provided by the embodiment of the application can realize each process realized in the method embodiment of fig. 1-2, and in order to avoid repetition, the description is omitted here.
The embodiment of the application also provides a control system of the water supply flow of the direct current furnace, namely the water supply control system, which comprises the control device of the water supply flow of the direct current furnace, the middle point controller, the middle point regulator, the water supply flow regulator, the coal water ratio function block, the addition block and the water supply controller, wherein each process of the embodiment of the water supply flow control method of the direct current furnace can be implemented in the control system, the same technical effect can be achieved, and the repetition is avoided, and the description is omitted.
The embodiment of the application also provides a readable storage medium, and the readable storage medium stores a program or an instruction, which when executed by a processor, realizes each process of the above-mentioned control method embodiment of the water supply flow of the direct current furnace, and can achieve the same technical effect, so that repetition is avoided, and no description is repeated here.
The processor is a processor in the electronic device described in the above embodiment. Readable storage media include computer readable storage media such as Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic or optical disks, and the like.
The embodiment of the application provides a chip, which comprises a processor and a communication interface, wherein the communication interface is coupled with the processor, the processor is used for running programs or instructions, the processes of the embodiment of the control method of the water supply flow of the direct current furnace can be realized, the same technical effects can be achieved, and the repetition is avoided, so that the description is omitted.
It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, chip systems, or system-on-chip chips, etc.
The foregoing embodiments of the present application mainly describe differences between the embodiments, and as long as there is no contradiction between different optimization features of the embodiments, the embodiments may be combined to form a better embodiment, and in view of brevity of line text, no further description is provided herein.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.
Claims (8)
1. A method for controlling feed water flow rate of a direct current furnace, comprising:
Under the condition that the running state of the middle point controller of the water supply control system is a manual state, acquiring a first flow value input from the outside;
outputting the first flow value to a mid-point regulator of the feedwater control system, instructing the mid-point regulator to regulate the feedwater flow of the direct current furnace to the first flow value;
The method further comprises the steps of:
Under the condition that the running state of the intermediate point controller is an automatic state, acquiring a second flow value output by an addition block of the water supply control system;
Outputting the second flow value to a mid-point regulator of the feedwater control system, instructing the mid-point regulator to regulate the feedwater flow of the direct current furnace to the second flow value.
2. The method of claim 1, wherein, in the event that the operational state of the intermediate point controller of the feedwater control system is a manual state, obtaining the externally input first flow value comprises:
Outputting a first value to a switching block by the switching value under the condition that the running state of the intermediate point controller is detected to be a manual state, wherein the first value indicates that the running state of the intermediate point controller is the manual state;
The switching block outputs the first flow value input by a feedwater flow manual setting module of the feedwater control system to the midpoint regulator upon receiving the first value from the switching value, wherein the feedwater flow manual setting module is for receiving an external input.
3. The method of claim 1, wherein obtaining the second flow value output by the feedwater control system summing block if the operational state of the intermediate point controller of the feedwater control system is an automatic state, comprises:
Outputting a second value to a switching block by the switching value under the condition that the running state of the intermediate point controller is detected to be the automatic state, wherein the second value indicates that the running state of the intermediate point controller is the automatic state;
The switching block outputs the second flow value input by the addition block to the intermediate point regulator in the case where the second value is received from the switching value.
4. The method according to claim 1, wherein the method further comprises:
In the case where the operation state of the intermediate point controller is switched from the manual state to the automatic state, the second flow value initially output by the addition block is controlled to be the same as the first flow value externally input in the manual state.
5. The method according to claim 1, wherein the method further comprises:
and when the operation state of the intermediate point controller is switched from the automatic state to the manual state, controlling the first flow value initially output by the water supply flow manual setting module of the water supply control system to be the same as the second flow value output by the adding block in the automatic state.
6. A control device for a water supply flow rate of a direct current furnace, comprising: the manual setting module of feedwater flow and intermediate regulation module, intermediate regulation module includes: switching value and a switching block, wherein,
The water supply flow manual setting module is used for receiving a first flow value input from the outside;
The middle adjusting module is used for acquiring the first flow value under the condition that the running state of the middle point controller of the water supply control system is a manual state; outputting the first flow value to a mid-point regulator of the feedwater control system, instructing the mid-point regulator to regulate the feedwater flow of the direct current furnace to the first flow value;
the intermediate regulating module is further used for obtaining a second flow value output by the adding block of the water supply control system under the condition that the running state of the intermediate point controller is an automatic state; outputting the second flow value to a mid-point regulator of the feedwater control system, instructing the mid-point regulator to regulate the feedwater flow of the direct current furnace to the second flow value.
7. The apparatus of claim 6, wherein the intermediate adjustment module obtains the externally input first flow value if the operational state of the intermediate point controller of the feedwater control system is a manual state, comprising:
The switching value outputs a first value to the switching block when the operation state of the intermediate point controller is detected to be a manual state, wherein the first value indicates that the operation state of the intermediate point controller is the manual state; the switching block outputs the first flow value input by a feedwater flow manual setting module of the feedwater control system to the midpoint regulator when the first value is received from the switching value.
8. The apparatus of claim 6, wherein the intermediate adjustment module obtains a second flow value output by the summing block of the feedwater control system if the operating state of the intermediate point controller is an automatic state, comprising:
The switching value outputs a second value to the switching block when the running state of the intermediate point controller is detected to be an automatic state, wherein the second value indicates that the running state of the intermediate point controller is an automatic state; the switching block outputs the second flow value input by the addition block to the intermediate point regulator in the case where the second value is received from the switching value.
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