CN111457601A - Automatic start-stop control method and device for gas-fired boiler - Google Patents
Automatic start-stop control method and device for gas-fired boiler Download PDFInfo
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- CN111457601A CN111457601A CN202010264873.9A CN202010264873A CN111457601A CN 111457601 A CN111457601 A CN 111457601A CN 202010264873 A CN202010264873 A CN 202010264873A CN 111457601 A CN111457601 A CN 111457601A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
Abstract
The invention provides a self-starting and stopping control method and a self-starting and stopping control device for a gas-fired boiler, wherein the method comprises the following steps: receiving a starting instruction of starting a boiler by using gas; controlling a water feeding pump of the gas starting boiler to feed water to the gas starting boiler according to the starting instruction; when a normal liquid level signal of an upper barrel of the gas starting boiler is received and a low liquid level signal of the upper barrel disappears, a request signal for preparing ignition of the gas starting boiler is sent; controlling a blower of the gas-fired boiler to perform front purging according to the request signal; and after the front purging is finished, controlling the gas to start the ignition of the boiler. The method realizes the automatic start of the gas starting boiler, greatly reduces the labor capacity of operators, thereby reducing the misoperation rate and the occurrence of accidents.
Description
Technical Field
The invention relates to the technical field of thermal power generation, in particular to a self-starting and stopping control method and device for a gas-fired boiler.
Background
The fuel of starting boiler in the thermal power plant generally divides coal, oil, gas 3 kinds, along with the country to the continuous attention of environmental protection, the starting furnace that uses the gas is more and more now. At present, the gas-fired boiler is generally started or stopped manually by operators.
The manual start-stop operation needs operators with rich experience to spend a long time to complete, and once the operation is in error, unpredictable damage is caused to human bodies and equipment. The starting and stopping frequency of the gas-fired boiler is continuously enhanced along with the higher and higher requirements on peak regulation and frequency modulation of the power plant, so that the workload of operators is greatly increased, and the times of misoperation are continuously increased; and the operating personnel of the power plant start and stop the boiler for a long time, the labor capacity is large, and a large amount of equipment is operated in a short time, so that misoperation is easily caused, and the personal safety or the equipment is seriously damaged.
Disclosure of Invention
The embodiment of the invention provides a self-starting and stopping control method of a gas starting boiler, which is used for greatly reducing the labor capacity of operators, reducing the misoperation rate and shortening the starting and stopping operation time of a gas starting boiler unit, and comprises the following steps:
receiving a starting instruction of starting a boiler by using gas;
controlling a water feeding pump of the gas starting boiler to feed water to the gas starting boiler according to the starting instruction;
when the normal liquid level signal of the upper cylinder of the gas starting boiler is received and the low liquid level signal of the upper cylinder disappears, sending a request signal for preparing ignition of the gas starting boiler;
controlling a blower of the gas-fired boiler to perform front purging according to the request signal;
and after the front purging is finished, controlling the gas to start the ignition of the boiler.
The embodiment of the invention also provides an automatic start-stop control device of the gas starting boiler, which is used for greatly reducing the labor capacity of operators, reducing the misoperation rate and shortening the start-stop operation time of a gas starting boiler unit, and comprises the following components:
the instruction receiving module is used for receiving a starting instruction of starting the boiler by using the gas;
the water feeding control module is used for controlling a water feeding pump of the gas starting boiler to feed water to the gas starting boiler according to the starting instruction;
the ignition signal sending module is used for sending a request signal for preparing ignition of the gas starting boiler when the normal liquid level signal of the upper barrel of the gas starting boiler is received and the received low liquid level signal of the upper barrel disappears;
the front purging control module is used for controlling a blower of the gas-fired boiler to perform front purging according to the request signal;
and the ignition control module is used for controlling the gas starting boiler to ignite after the front purging is finished.
The embodiment of the invention also provides computer equipment which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor realizes the self-starting and stopping control method of the gas-fired boiler when executing the computer program.
Embodiments of the present invention also provide a computer-readable storage medium storing a computer program for executing the above-mentioned method for controlling the automatic start-up and shut-down of the gas-fired boiler.
In the embodiment of the invention, the starting instruction of the boiler is started by receiving the gas; controlling a water feeding pump of the gas starting boiler to feed water to the gas starting boiler according to the starting instruction; when a normal liquid level signal of an upper barrel of the gas starting boiler is received and a low liquid level signal of the upper barrel disappears, a request signal for preparing ignition of the gas starting boiler is sent; controlling a blower of the gas-fired boiler to perform front purging according to the request signal; after the front purging is finished, controlling gas to start the boiler to ignite; the method has the advantages that the automatic starting of the gas-starting boiler is realized, the labor amount of operators is greatly reduced, the misoperation rate and the accident are reduced, compared with the manual operation in the prior art, the starting and stopping operation time of the unit is shortened, the quick peak-adjusting and frequency-adjusting capacity of the unit is increased in the peak period of power utilization, and the benefit of a power generation enterprise is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of a self-start-stop control method of a gas-fired boiler in an embodiment of the invention.
FIG. 2 is a schematic view of a gas fired boiler system embodying one embodiment of the present invention.
Fig. 3 is a schematic diagram of an automatic start-stop control device of a gas-fired boiler in the embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a self-starting and stopping control method of a gas starting boiler, which is used for greatly reducing the labor capacity of operators, reducing the misoperation rate and shortening the starting and stopping operation time of a gas starting boiler unit, and as shown in figure 1, the method comprises the following steps:
step 101: receiving a starting instruction of starting a boiler by using gas;
step 102: controlling a water feeding pump of the gas starting boiler to feed water to the gas starting boiler according to the starting instruction;
step 103: when a normal liquid level signal of an upper barrel of the gas starting boiler is received and a low liquid level signal of the upper barrel disappears, a request signal for preparing ignition of the gas starting boiler is sent;
step 104: controlling a blower of the gas-fired boiler to perform front purging according to the request signal;
step 105: and after the front purging is finished, controlling the gas to start the ignition of the boiler.
As can be known from the flow shown in fig. 1, in the embodiment of the present invention, the start instruction of the boiler is started by receiving the gas; controlling a water feeding pump of the gas starting boiler to feed water to the gas starting boiler according to the starting instruction; when a normal liquid level signal of an upper barrel of the gas starting boiler is received and a low liquid level signal of the upper barrel disappears, a request signal for preparing ignition of the gas starting boiler is sent; controlling a blower of the gas-fired boiler to perform front purging according to the request signal; after the front purging is finished, controlling gas to start the boiler to ignite; the method has the advantages that the automatic starting of the gas-starting boiler is realized, the labor amount of operators is greatly reduced, the misoperation rate and the accident are reduced, compared with the manual operation in the prior art, the starting and stopping operation time of the unit is shortened, the quick peak-adjusting and frequency-adjusting capacity of the unit is increased in the peak period of power utilization, and the benefit of a power generation enterprise is improved.
When the method is implemented specifically, firstly, a starting instruction of starting the boiler by using gas is received.
And after receiving the opening instruction, controlling a water feeding pump of the gas starting boiler to feed water to the gas starting boiler according to the opening instruction. In the specific embodiment, after receiving the opening instruction, the operating state of the deaerator water inlet regulating valve, the operating state of the feed pump and the operating state of the feed regulating valve of the gas-fired boiler need to be acquired, and if the operating state of the deaerator water inlet regulating valve, the operating state of the feed pump and the operating state of the feed regulating valve are normal, the feed pump of the gas-fired boiler is controlled to feed water to the gas-fired boiler according to the opening instruction. Specifically, controlling a feed pump of a gas start-up boiler to feed water to the gas start-up boiler comprises:
acquiring the liquid level of a deaerator of a gas starting boiler;
if the liquid level of the deaerator is higher than a first preset value, controlling a feed pump of a gas starting boiler to start after waiting for a first preset time;
and after the recirculation regulating valve of the water feeding pump reaches a first set opening degree and the water feeding regulating valve of the gas starting boiler reaches a second set opening degree, controlling the water feeding pump to feed water to the gas starting boiler.
In a specific embodiment, the first preset value may be 400mm, the first predetermined time may be 60s, the first set opening may be 100%, and the second set opening may be 100%.
After a water feeding pump of the gas starting boiler is controlled to feed water to the gas starting boiler, a request signal for preparing ignition of the gas starting boiler is sent when a normal signal of the liquid level of an upper barrel of the gas starting boiler is received and a low signal of the liquid level of the upper barrel is received and disappears. In a specific embodiment, when the received upper barrel liquid level low signal disappears, the DCS logic automatically sends a signal for requesting gas to start the boiler to be ignited, and the signal is sent to the HMI man-machine exchange interface to wait for manual confirmation of operators. And after the operator confirms manually, continuing to execute the subsequent steps.
And after a request signal for preparing ignition of the gas-fired boiler is sent, controlling a blower of the gas-fired boiler to perform front blowing according to the sent request signal. In the specific embodiment, a gas leakage test needs to be performed on the burner of the gas-fired boiler, and when the gas leakage test result of the burner of the gas-fired boiler is that the gas leakage test result is not leaked, the blower of the gas-fired boiler is controlled to perform front purging according to a signal sent out to request the gas-fired boiler to prepare for ignition. The specific process comprises the following steps: controlling a burner damper of the gas-fired boiler to reach a third set opening, which may be 40% for example; after the gas regulating valve of the burner of the gas start boiler is completely closed, the blower of the gas start boiler is controlled to perform front purging according to the preset time length of the set front purging, and the preset time length of the front purging can be set to 120s, for example.
Specifically, the gas leakage test includes the steps of:
closing a second main gas valve of the burner of the gas starting boiler, and closing an emptying valve of the burner of the gas starting boiler;
automatically opening a first main gas valve of a burner of the gas starting boiler, and after 2.5S delay, automatically closing the first main gas valve of the burner of the gas starting boiler;
after waiting for 30S, if the gas starting boiler leakage detection switch signal is not sent, the gas leakage test is proved to pass.
And after the front purging is finished, controlling the gas to start the ignition of the boiler. The specific process comprises the following steps:
controlling a gas quick-closing valve of the gas starting boiler to open, controlling a burner damper of the gas starting boiler to reach a fourth set opening, for example, 5% in a specific embodiment, and controlling a gas regulating valve of the gas starting boiler to reach a fifth set opening of an ignition position, for example, 10%;
controlling an ignition transformer of the gas-fired boiler to open an ignition valve after a second preset time period, and closing the ignition transformer after a third preset time period, so as to perform small fire ignition, wherein the second preset time period can be 2s for example, and the third preset time period can be 8s for example;
after the pilot fire is successfully ignited, controlling a first main gas valve and a second main gas valve of a burner of the gas starting boiler to be opened, and after delaying for a fourth preset time, controlling the burner of the gas starting boiler to be closed, wherein the fourth preset time can be 10s for example;
the damper of the burner of the gas start-up boiler is controlled to a sixth set opening, for example 7%, and the gas regulating valve of the gas start-up boiler is controlled to a seventh set opening, for example 10%.
The embodiment of the invention also comprises an automatic stop control method for starting the boiler by gas, which comprises the following specific processes:
receiving a stop instruction of starting a boiler by using gas;
according to the stop instruction, controlling a first main gas valve and a second main gas valve of a burner of the gas-fired boiler to be closed, controlling an ignition transformer of the gas-fired boiler to be closed, and controlling an ignition valve and a gas quick-closing valve of the gas-fired boiler to be closed;
controlling an adjusting air door of a burner of the gas starting boiler to be opened to an eighth set opening degree, for example, 40%, and controlling a gas regulating valve of the gas starting boiler to be closed;
after delaying for a fifth predetermined time (for example, 120s in a specific embodiment), controlling the gas-fired boiler to perform ventilation purging, and completing the stopping of the gas-fired boiler.
It can be understood that the set opening and the predetermined time are examples, and those skilled in the art can understand that the rest values are not described herein again.
A specific example is given below to illustrate how embodiments of the present invention perform self-start-stop control of a gas fired boiler. This example applies to a gas start-up boiler system as shown in figure 2.
The gas-fired boiler system shown in FIG. 2 is divided into two parts: steam-water system, flue gas fuel system. The steam-water system mainly comprises a demineralized water supply adjusting door, a deaerator heater adjusting door, a deaerator, a water supply pump, a water supply adjusting door and the like. The smoke and air fuel system mainly comprises a blower, a gas starting boiler ignition valve, a gas starting boiler exhaust valve, a gas starting boiler main air valve 1, a gas starting boiler main air valve 2, a gas starting boiler burner gas regulating valve, a gas starting boiler ignition transformer, a gas starting boiler burner air door and the like.
The automatic starting process of the gas-fired boiler is divided into two parts, namely the water feeding program control of the gas-fired boiler and the starting program control of the gas-fired boiler.
The water feeding program control of the gas starting boiler realizes the logic as follows:
water supply program control starting permission conditions (AND) of the gas starting boiler:
(1) the water inlet regulating valve of the deaerator of the gas starting boiler has no fault;
(2) the water feeding pump of the gas starting boiler is normal without failure;
(3) the feed water regulating valve of the gas starting boiler has no fault.
The water feeding process of the gas starting boiler is controlled as a first step:
(1) the automatic state of the water inlet adjusting door of the automatic feeding deaerator is realized;
(2) automatically setting a fixed value of the liquid level of the deaerator, wherein the fixed value needs to be larger than 400 mm.
The second step of water feeding program control of the gas starting boiler:
(1) if the liquid level of the deaerator is larger than 400mm, delaying 60S to automatically start a feed pump of a gas starting boiler;
(2) automatically starting a water feeding pump recirculation regulating valve of a gas starting boiler to a certain opening degree;
(3) the water supply regulating valve of the gas starting boiler is automatically opened for a certain opening degree.
The third step of water feeding program control of the gas-fired boiler:
(1) waiting for the normal signal of the liquid level of the upper barrel of the gas-fired boiler to be sent out and the low signal of the liquid level of the upper barrel to disappear;
(2) and the DCS logic automatically sends a request signal for starting the boiler to prepare for ignition of the gas, and the request signal is sent to the HMI man-machine exchange interface to wait for manual confirmation of operators. After the manual confirmation is sent, the starting program control of the gas boiler is automatically started.
The starting program control of the gas starting boiler is realized by the following logic:
the method comprises the following steps of:
(1) automatic input gas leakage sub-program control
Wherein, the fuel gas leakage sub-program control step:
the first step is as follows: closing a main gas valve 2 of a gas starting boiler burner and closing an exhaust valve of the boiler burner;
the second step is that: automatically opening a main steam valve 1 of the burner, and automatically closing after 2.5 seconds of delay;
the third step: after waiting for 30S, if the leakage detection switch signal is not sent, the gas leakage test is passed.
The second step of starting the boiler by gas:
starting the blower of the gas-fired boiler, and automatically resetting the start program control of the gas-fired boiler if the blower fails to start.
The third step of starting the boiler by gas:
(1) automatically set the front purge 120S (which may be manually modified online);
(2) starting a regulating damper of a boiler burner to open by 40 percent;
(3) and (4) starting a gas adjusting door of the burner of the furnace after the furnace is completely closed, and starting to purge before the furnace is started.
The fourth step of starting the boiler by gas: the ignition program of the gas boiler is automatically put into the program control.
The ignition sub program control step of the gas boiler comprises the following steps:
the first step is as follows: opening a gas quick-closing valve of a gas starting boiler, opening a gas starting boiler regulating damper to 5%, and opening a starting boiler gas regulating valve to an ignition position of 10%;
the second step is that: starting an ignition transformer of the gas starting boiler, starting an ignition valve after 2S, and closing the ignition transformer after 8S, wherein small fire is successfully ignited;
the third step: after the ignition is finished, opening a main gas valve 1 and a main gas valve 2 of the combustor, delaying for 10S, and closing an ignition valve;
the fourth step: and opening a burner air door of the gas starting boiler to 7%, opening a gas regulating valve of the starting boiler to 10%, and successfully igniting the big fire.
The stop program control of the gas starting boiler comprises the following steps:
the stop program-controlled automatic starting conditions of the gas starting boiler are as follows:
(1) when the starting program control of the gas-fired boiler is executed, the ignition program control of the gas-fired boiler fails, and the boiler stopping program control is automatically executed; or
(2) At any time, when the gas-fired boiler generates MFT main protection action, the stop program control of the gas-fired boiler is automatically executed; or
(3) At any moment, an operator manually clicks the HMI exchange interface program stop control button to start executing the program stop control of the gas starting boiler.
The first step of the gas starting boiler stop program control:
(1) closing a main gas valve 1 and a main gas valve 2 of a burner of the gas starting boiler;
(2) turning off an ignition transformer of the gas starting boiler;
(3) closing an ignition valve of the gas starting boiler;
(4) and closing a gas quick-closing valve for starting the gas boiler.
The second step of the gas starting boiler stop program control:
(1) opening a burner adjusting air door of the gas starting boiler to 40%;
(2) and closing a gas regulating valve of the gas starting boiler to 0%.
The third step of the gas starting boiler stop program control:
after delaying 120S, the gas starts the boiler to start ventilation and purging, and purging time is freely set by operators.
The implementation of the above specific application is only an example, and the rest of the embodiments are not described in detail.
Based on the same inventive concept, embodiments of the present invention further provide an automatic start-stop control device for a gas-fired boiler, and because the principle of the problem solved by the automatic start-stop control device for a gas-fired boiler is similar to that of the automatic start-stop control method for a gas-fired boiler, the implementation of the automatic start-stop control device for a gas-fired boiler can refer to the implementation of the automatic start-stop control method for a gas-fired boiler, and the repeated parts are not repeated, and the specific structure is as shown in fig. 3:
the instruction receiving module 301 is used for receiving a starting instruction of starting the boiler by using gas;
the water feeding control module 302 is used for controlling a water feeding pump of the gas-fired boiler to feed water to the gas-fired boiler according to the starting instruction;
the ignition signal sending module 303 is configured to send a request signal for gas starting of the boiler to prepare for ignition when the received signal indicating that the liquid level of the upper drum of the gas starting boiler is normal and the received signal indicating that the liquid level of the upper drum is low disappears;
a front purging control module 304, configured to control a blower of the gas-fired boiler to perform front purging according to the request signal;
and the ignition control module 305 is used for controlling the ignition of the gas-fired boiler after the front purging is finished.
In a specific embodiment, the water feeding control module 302 is specifically configured to:
according to the opening instruction, before controlling the feed pump that the gas starts the boiler to give the gas start boiler water feeding, still include:
acquiring the working state of a deaerator water inlet regulating valve, a feed pump and a feed regulating valve of a gas starting boiler;
if the working state of the deaerator water inlet regulating valve, the working state of the feed pump and the working state of the feed regulating valve are normal, acquiring the deaerator liquid level of the gas starting boiler according to the opening instruction; if the liquid level of the deaerator is higher than a first preset value, controlling a feed pump of a gas starting boiler to start after waiting for a first preset time; and after the recirculation regulating valve of the water feeding pump reaches a first set opening degree and the water feeding regulating valve of the gas starting boiler reaches a second set opening degree, controlling the water feeding pump to feed water to the gas starting boiler.
The front purge control module 304 is specifically configured to: controlling a burner damper of the gas-fired boiler to reach a third set opening;
and after the gas regulating valve of the burner of the gas starting boiler is completely closed, controlling a blower of the gas starting boiler to carry out front purging according to the preset time length of the set front purging.
The ignition control module 305 is specifically configured to:
controlling a gas quick-closing valve of the gas starting boiler to open, controlling a burner damper of the gas starting boiler to reach a fourth set opening degree, and controlling a gas regulating valve of the gas starting boiler to reach a fifth set opening degree of an ignition position;
controlling an ignition transformer of the gas starting boiler to open an ignition valve after a second preset time, and closing the ignition transformer after a third preset time to perform small fire ignition;
after the small fire is ignited successfully, controlling a first main gas valve and a second main gas valve of a burner of the gas starting boiler to be opened, and after delaying for a fourth preset time, controlling the burner of the gas starting boiler to be closed to an ignition valve;
and controlling an air door of a burner of the gas starting boiler to reach a sixth set opening degree, and controlling a gas regulating valve of the gas starting boiler to reach a seventh set opening degree.
The automatic start-stop control device of the gas starting boiler in the embodiment of the invention further comprises:
a self-stop module to:
receiving a stop instruction of starting a boiler by using gas;
according to the stop instruction, controlling a first main gas valve and a second main gas valve of a burner of the gas-fired boiler to be closed, controlling an ignition transformer of the gas-fired boiler to be closed, and controlling an ignition valve and a gas quick-closing valve of the gas-fired boiler to be closed;
controlling an adjusting air door of a burner of the gas starting boiler to be opened to an eighth set opening degree, and controlling a gas regulating valve of the gas starting boiler to be closed;
and after delaying for a fifth preset time, controlling the gas to start the boiler for ventilation and purging.
The embodiment of the invention also provides computer equipment which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor realizes the self-starting and stopping control method of the gas-fired boiler when executing the computer program.
The embodiment of the invention also provides a computer readable storage medium, which stores a computer program for executing the automatic start-up and stop control method of the gas-fired boiler.
In summary, the self-start-stop control method and device for the gas-fired boiler provided by the embodiment of the invention have the following advantages:
starting a boiler by receiving a starting instruction for starting gas; controlling a water feeding pump of the gas starting boiler to feed water to the gas starting boiler according to the starting instruction; when a normal liquid level signal of an upper barrel of the gas starting boiler is received and a low liquid level signal of the upper barrel disappears, a signal requesting the gas starting boiler to prepare for ignition is sent out; controlling a blower of the gas-fired boiler to perform front purging according to a signal which is sent out to request the gas-fired boiler to be ignited; after the front purging is finished, controlling gas to start the boiler to ignite; the method has the advantages that the automatic starting of the gas-starting boiler is realized, the labor amount of operators is greatly reduced, the misoperation rate and the accident are reduced, compared with the manual operation in the prior art, the starting and stopping operation time of the unit is shortened, the quick peak-adjusting and frequency-adjusting capacity of the unit is increased in the peak period of power utilization, and the benefit of a power generation enterprise is improved.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the embodiment of the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a gas starts automatic start-up and stop control method of boiler which characterized in that includes:
receiving a starting instruction of starting a boiler by using gas;
controlling a water feeding pump of the gas starting boiler to feed water to the gas starting boiler according to the starting instruction;
when the normal liquid level signal of the upper cylinder of the gas starting boiler is received and the low liquid level signal of the upper cylinder disappears, sending a request signal for preparing ignition of the gas starting boiler;
controlling a blower of the gas-fired boiler to perform front purging according to the request signal;
and after the front purging is finished, controlling the gas to start the ignition of the boiler.
2. The method of claim 1, wherein prior to controlling a feedwater pump of the gas-fired boiler to feed water to the gas-fired boiler based on the turn-on command, further comprising:
acquiring the working state of a deaerator water inlet regulating valve, a water supply pump and a water supply regulating valve of the gas starting boiler;
according to the opening instruction, controlling a water feeding pump of the gas starting boiler to feed water to the gas starting boiler, and the method comprises the following steps:
and if the working state of the deaerator water inlet regulating valve, the working state of the water supply pump and the working state of the water supply regulating valve are normal, controlling the water supply pump of the gas starting boiler to supply water to the gas starting boiler according to the opening instruction.
3. The method of claim 1, wherein controlling a feedwater pump of the gas start-up boiler to feed water to the gas start-up boiler comprises:
acquiring the liquid level of a deaerator of the gas starting boiler;
if the liquid level of the deaerator is higher than a first preset value, controlling a feed pump of the gas-fired boiler to start after waiting for a first preset time;
and after the recirculation regulating valve of the water feeding pump reaches a first set opening degree and the water feeding regulating valve of the gas starting boiler reaches a second set opening degree, controlling the water feeding pump to feed water to the gas starting boiler.
4. The method of claim 1, wherein controlling a blower of the gas fired boiler to perform a front purge in response to the request signal comprises:
and under the condition that the gas leakage test result of the burner of the gas starting boiler is that the gas is not leaked, controlling a blower of the gas starting boiler to perform front purging according to the request signal.
5. The method of claim 1, wherein controlling a blower of the gas fired boiler to perform a front purge in response to the request signal comprises:
controlling a burner damper of the gas starting boiler to reach a third set opening;
and after the gas regulating valve of the burner of the gas starting boiler is completely closed, controlling the blower of the gas starting boiler to carry out front purging according to the preset time length of the set front purging.
6. The method of claim 1, wherein controlling the gas-fired boiler ignition comprises:
controlling a gas quick-closing valve of the gas starting boiler to open, controlling a burner damper of the gas starting boiler to reach a fourth set opening degree, and controlling a gas regulating valve of the gas starting boiler to reach a fifth set opening degree of an ignition position;
controlling an ignition transformer of the gas starting boiler to open an ignition valve after a second preset time, and closing the ignition transformer after a third preset time to perform small fire ignition;
after the small fire is ignited successfully, controlling a first main gas valve and a second main gas valve of a burner of the gas-fired boiler to be opened, and after delaying for a fourth preset time, controlling the burner of the gas-fired boiler to be closed to an ignition valve;
and controlling an air door of a combustor of the gas starting boiler to reach a sixth set opening degree, and controlling a gas regulating valve of the gas starting boiler to reach a seventh set opening degree.
7. The method of claim 1, further comprising:
receiving a stop instruction of starting a boiler by using gas;
according to the stop instruction, controlling a first main gas valve and a second main gas valve of a burner of the gas-fired boiler to be closed, controlling an ignition transformer of the gas-fired boiler to be closed, and controlling an ignition valve and a gas quick-closing valve of the gas-fired boiler to be closed;
controlling an adjusting air door of a burner of the gas starting boiler to be opened to an eighth set opening degree, and controlling a gas regulating valve of the gas starting boiler to be closed;
and after delaying for a fifth preset time, controlling the gas-fired boiler to start the ventilation and purging.
8. The utility model provides a gas starts automatic start-stop controlling means of boiler which characterized in that includes:
the instruction receiving module is used for receiving a starting instruction of starting the boiler by using the gas;
the water feeding control module is used for controlling a water feeding pump of the gas starting boiler to feed water to the gas starting boiler according to the starting instruction;
the ignition signal sending module is used for sending a request signal for preparing ignition of the gas starting boiler when the normal liquid level signal of the upper barrel of the gas starting boiler is received and the received low liquid level signal of the upper barrel disappears;
the front purging control module is used for controlling a blower of the gas-fired boiler to perform front purging according to the request signal;
and the ignition control module is used for controlling the gas starting boiler to ignite after the front purging is finished.
9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for executing the method of any one of claims 1 to 7.
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| CN112902137A (en) * | 2021-02-01 | 2021-06-04 | 中国神华能源股份有限公司国华电力分公司 | Automatic starting method and device for starting boiler |
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