CN108062065A - The control method and device of pulverizing process - Google Patents
The control method and device of pulverizing process Download PDFInfo
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- CN108062065A CN108062065A CN201711395344.7A CN201711395344A CN108062065A CN 108062065 A CN108062065 A CN 108062065A CN 201711395344 A CN201711395344 A CN 201711395344A CN 108062065 A CN108062065 A CN 108062065A
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- feeder
- pressure signal
- control system
- threshold value
- overheating protection
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/048—Monitoring; Safety
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
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Abstract
The embodiment of the invention discloses a kind of control method and device of pulverizing process, for preventing scaling loss of the hot wind to feeder feed belt.Present invention method includes：Control system obtains the pressure signal inside feeder；Whether the control system judges the pressure signal less than predetermined threshold value；If so, the control system performs overheating protection action, the overheating protection acts that the hot wind of coal pulverizer is prevented to enter feeder.Since the pressure signal inside feeder can directly feed back the pressure condition inside feeder, using the pressure signal inside feeder as the basis for estimation for performing overheating protection action, it can prevent scaling loss of the hot wind to feeder feed belt.
Description
Technical field
The present invention relates to coal electro-technical fields, and in particular to the control method and control device of a kind of pulverizing process, calculating
Machine device, the computer program product comprising instruction.
Background technology
In thermal power plant, coal-fired power plant is the thermal energy for generating coal combustion, and heat-setting water generation high temperature and pressure is steamed
Vapour is converted into electric energy by steam turbine generator device.
In the prior art, in the coal furnace pulverizing process of coal-fired power plant, the coal in run coal bin is entered by raw coal bucket
The feeding mouth of feeder, feeder are sent discharge port of the raw coal continuously through feeder by the feed belt inside feeder
Toward coal pulverizer.Coal pulverizer is to crush the raw coal that feeder discharge port is sent out and wear into the machinery of coal dust, on the one hand grinds raw coal
On the one hand Cheng Fen is dried raw coal using hot wind, coal is dried and sends out coal dust by hot wind.Feeder is continuously uninterruptedly given
During coal, raw coal is gathered in raw coal bucket, makes with feeder extraneous air to completely cut off at feeder feeding mouth, so as to protect inside feeder
Hold the environment of opposing seal.
However, when run coal bin occur hanging or hole capital after selling all securities cause feeder break coal when, feeder feed belt occurs unloaded, leads
It causes to communicate with feeder extraneous air at feeder feeding mouth, so that feeder air pressure inside reduces, and then in coal pulverizer
Hot wind entered by feeder discharge outlet inside feeder, since hot blast temperature is higher, the biography inside hot wind and feeder
After sending belt contacts scaling loss can be generated to feed belt.
The content of the invention
An embodiment of the present invention provides the control method and control device of a kind of pulverizing process, computer installation, include finger
The computer program product of order, for preventing scaling loss of the hot wind to feeder feed belt.
An embodiment of the present invention provides a kind of control method of pulverizing process, including：
Control system obtains the pressure signal inside feeder；
Whether the control system judges the pressure signal less than predetermined threshold value；
If so, the control system performs overheating protection action, which acts that hot wind is prevented to enter to coal
Machine.
Optionally, which is the pressure signal of feeder internal gas.
Optionally, which is the pressure signal of feed belt inside feeder.
Optionally, which performs alarm and protection action and includes：The control system closes the feeder discharge port lock
Door.
Optionally, which performs alarm and protection action and includes：The control system closes the feeder feeding mouth lock
Door.
Optionally, which performs alarm and protection action and includes：The control system closes the hot wind of coal pulverizer.
An embodiment of the present invention provides a kind of control device of pulverizing process, including：
Acquiring unit, for obtaining the pressure signal inside feeder；
Judging unit, for judging the pressure signal whether less than predetermined threshold value；
Execution unit, for when whether the judging unit determines the pressure signal less than predetermined threshold value, performing overheat and protecting
Shield acts, which acts that hot wind is prevented to enter feeder.
Optionally, which is the pressure signal of feeder internal gas.
An embodiment of the present invention provides a kind of control device of pulverizing process, including：
Processor, memory, input-output equipment and bus；
The processor, memory, input-output equipment are connected respectively at the bus；
The processor is used to perform following steps：
Obtain the pressure signal inside feeder；
Judge the pressure signal whether less than predetermined threshold value；
When whether the processor determines the pressure signal less than predetermined threshold value, overheating protection action is performed, which protects
Shield acts that hot wind is prevented to enter feeder.
An embodiment of the present invention provides it is a kind of comprising instruction computer program product, when run on a computer,
So that the computer performs the control method of foregoing pulverizing process and the program designed by the method for embodiment.
As can be seen from the above technical solutions, the embodiment of the present invention has the following advantages：
In pulverizing process, control system obtains real-time pressure signal inside feeder, when the control system determines this
Pressure signal be less than predetermined threshold value when, i.e., run coal bin generation hanging or hole capital after selling all securities caused by feeder break coal when, which holds
Row overheating protection acts, which acts that hot wind is prevented to enter feeder.Due to the pressure signal inside feeder
The pressure condition inside feeder can be directly fed back, therefore, is protected using the pressure signal inside feeder as overheat is performed
The basis for estimation of shield action, can prevent scaling loss of the hot wind to feeder feed belt.
Description of the drawings
Fig. 1 is a schematic diagram of the control method of pulverizing process in the embodiment of the present invention；
Fig. 2 is another schematic diagram of the control method of pulverizing process in the embodiment of the present invention；
Fig. 3 is a schematic diagram of the control device of pulverizing process in the embodiment of the present invention；
Fig. 4 is another schematic diagram of the control device of pulverizing process in the embodiment of the present invention.
Specific embodiment
An embodiment of the present invention provides the control method and control device of a kind of pulverizing process, computer installation, include finger
The computer program product of order, for preventing scaling loss of the hot wind to feeder feed belt.
In order to which those skilled in the art is made to more fully understand the present invention program, below in conjunction in the embodiment of the present invention
The technical solution in the embodiment of the present invention is clearly and completely described in attached drawing, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's all other embodiments obtained without making creative work should all belong to the model that the present invention protects
It encloses.
Term " first ", " second ", " the 3rd " in description and claims of this specification and above-mentioned attached drawing, "
Four " etc. be the object for distinguishing similar, without being used to describe specific order or precedence.It should be appreciated that it so uses
Data can exchange in the appropriate case, so that the embodiments described herein can be in except illustrating or describing herein
Order beyond appearance is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that covering is non-exclusive
Include, be not necessarily limited to clearly arrange for example, containing the process of series of steps or unit, method, system, product or equipment
Those steps or unit gone out, but may include not list clearly or consolidate for these processes, method, product or equipment
The other steps or unit having.
In order to make it easy to understand, the idiographic flow in the embodiment of the present invention is described below, referring to Fig. 1, of the invention
One embodiment of the control method of pulverizing process includes in embodiment：
101st, control system obtains the pressure signal inside feeder；
Control system obtains real-time pressure signal inside feeder incessantly, wherein, which is used to indicate
Pressure inside feeder.
In the present embodiment, control system can self-contained device for pressure measurement detect to obtain pressure inside feeder
Signal can also receive the pressure signal inside the feeder that other systems are detected by device for pressure measurement, also may be used
To be that other manner acquires pressure signal, do not limit herein specifically.
In addition, the pressure signal, which can be device for pressure measurement, detects the electric signal being converted to after pressure parameter,
It can be the pressure parameter in the present embodiment measured by device for pressure measurement, can also be the pressure signal of other forms, specifically
It does not limit herein.
102nd, whether the control system judges the pressure signal less than predetermined threshold value, if so, step 103 is performed,
If it is not, then perform step 101；
The pressure signal that control system acquires step 101 and default pressure signal threshold value comparison height, if should
Pressure signal is less than the predetermined threshold value, then performs step 103；If the pressure signal is higher than in the predetermined threshold value, step is performed
101。
In the present embodiment, control system preset pressure signal threshold value under original operating state, the threshold value be used to indicate to
The pressure condition of coal machine；When the pressure signal that step 101 acquires is higher than the threshold value, feeder normal work；Work as step
When 101 pressure signals acquired are less than the threshold value, feeder occurs abnormal.
103rd, the control system performs overheating protection action.
When the pressure signal that control system verification step 101 acquires is less than predetermined threshold value, control system performed
Thermal protection acts, which acts that hot wind is prevented to enter inside feeder.
In the present embodiment, when the pressure signal that control system verification step 101 acquires is less than predetermined threshold value, that is, give
There is exception in coal machine, is acted at this point, the control system performs overheating protection according to preset condition, hot wind is prevented to enter in feeder
Portion is in contact with feed belt.
In the present embodiment, control system obtains real-time pressure signal inside feeder, when the control system determines the pressure
When force signal is less than predetermined threshold value, i.e., run coal bin hanging or hole capital after selling all securities occurs caused by feeder break coal when, control system execution
Overheating protection acts, which acts that hot wind is prevented to enter feeder.Since the pressure signal inside feeder can
Directly to feed back the pressure condition inside feeder, therefore, using the pressure signal inside feeder as execution overheating protection
The basis for estimation of action can prevent scaling loss of the hot wind to feeder feed belt.
In the embodiment of the present application, pressure signal can be the pressure signal of feeder internal gas, or feeder
The pressure signal of internal feed belt, or other pressure signals for simply feeder internal pressure situation, specifically
It does not limit herein.
Wherein, when feeder works normally, i.e., when feeder transmits raw coal for coal pulverizer incessantly, since raw coal gathers
Collect in raw coal bucket, make with feeder extraneous air to completely cut off at feeder feeding mouth, so as to keep opposing seal inside feeder
Environment, at this point, the pressure of feeder internal gas is higher, feed belt is subject to the pressure of raw coal larger inside feeder.When
When feeder is abnormal, i.e., run coal bin occur hanging or hole capital after selling all securities cause feeder break coal when, break at feeder feeding mouth
Coal causes feeder inner air and the contact air outside feeder, at this point, the pressure of feeder internal gas declines, by
In disconnected coal, the pressure that feeder inside feed belt receives raw coal also declines therewith.Therefore, the pressure letter of feeder internal gas
Number and feeder inside the pressure signal of feed belt may be used to indicate the working condition of feeder.
The present embodiment and following embodiment are only using the pressure signal of feeder internal gas as the pressure inside feeder
The example of signal illustrates, and in practical applications, can also be the pressure signal inside the feeder of other forms, it is specific this
Place does not limit.
Referring to Fig. 2, another embodiment of the control method of pulverizing process includes in the embodiment of the present application：
201st, control system obtains the pressure signal of feeder internal gas；
Control system obtains the real-time pressure signal of feeder internal gas incessantly.
In the present embodiment, control system can self-contained gas pressure measurement device detect to obtain gas inside feeder
The pressure signal of body can also receive the feeder internal gas that other systems are detected by gas pressure measurement device
Pressure signal or other manner acquire the pressure signal of feeder internal gas, do not limit herein specifically.
In addition, the pressure signal can be the telecommunications that gas pressure measurement device detection gas pressure is converted to afterwards
Number, or the gas pressure in the present embodiment measured by device for pressure measurement can also be the pressure signal of other forms,
It does not limit herein specifically.
202nd, the control system judges whether the pressure signal of the gas is less than predetermined threshold value, if so, performing step
Rapid 203, if it is not, then performing step 201；
The pressure signal that control system acquires step 201 and default pressure signal threshold value comparison height, if should
Pressure signal is less than the predetermined threshold value, then performs step 203；If the pressure signal is higher than in the predetermined threshold value, step is performed
201。
In the present embodiment, control system pre-set gas pressure signal threshold value under original operating state, the threshold value is used to refer to
Show the gas pressure situation of feeder；When the gas pressure signal that step 201 acquires is higher than the threshold value, feeder is normal
Work；When the gas pressure signal that step 201 acquires is less than the threshold value, feeder occurs abnormal.
203rd, the control system performs overheating protection action.
When the pressure signal that control system verification step 201 acquires is less than predetermined threshold value, control system performed
Thermal protection acts, which acts that hot wind is prevented to enter inside feeder.
In the present embodiment, when the pressure signal that control system verification step 201 acquires is less than predetermined threshold value, that is, give
There is exception in coal machine, is acted at this point, the control system performs overheating protection according to preset condition, hot wind is prevented to enter in feeder
Portion is in contact with feed belt.
Specifically, overheating protection action can be to close feeder discharging port strobe, due to the hot wind master in coal pulverizer
It is gathered in outside feeder discharge port, by coin of the realm feeder discharging port strobe hot wind can be prevented to enter by the discharge port to coal
Inside machine.In addition, in actual use, due to equipment aging the problems such as, the port strobe that causes to discharge can not completely cut off completely
Hot wind enters feeder, and therefore, overheating protection action can also include closing feeder pan feeding port strobe so that in feeder
Portion's air relative closure, so as to which hot wind be prevented to enter inside feeder.
In actual use, there is a situation where during disconnected coal, service personnel needs to open the inspection of feeder side door for feeder
It repaiies passage and enters inside feeder and overhauled, therefore, to avoid accidentally injuring service personnel, overheating protection action can also include
Close the air-heater of coal pulverizer.
In addition, in the present embodiment, being additionally provided with self-test update, prevent from damaging due to line short, open circuit, close to switch
Bad, signal caused by module point scaling loss reports the false judgment for causing program by mistake.And routine test system is formulated, it is used according to equipment
The frequency monthly or repeatedly carries out logic judgment experiment, to prevent from due to each on-off model mistake in scene feeder being caused to be jumped
Lock.
In the present embodiment, control system obtains the real-time pressure signal of feeder internal gas, when the control system determines
The gas pressure signal be less than predetermined threshold value when, i.e., run coal bin generation hanging or hole capital after selling all securities caused by feeder break coal when, the control
System performs overheating protection action, which acts that hot wind is prevented to enter feeder.Due to feeder internal gas
Pressure signal can directly feed back gas pressure situation inside feeder, therefore, with the pressure of feeder internal gas
Signal can prevent scaling loss of the hot wind to feeder feed belt as the basis for estimation for performing overheating protection action.
Referring to Fig. 3, the control device of pulverizing process includes in the embodiment of the present application：
Acquiring unit 301, for obtaining the pressure signal inside feeder；
Judging unit 302, for judging the pressure signal whether less than predetermined threshold value；
Execution unit 303, for when whether the judging unit determines the pressure signal less than predetermined threshold value, performing
Overheating protection acts, and the overheating protection acts that hot wind is prevented to enter feeder.
Optionally, in some embodiments of the control device of pulverizing process, when the judging unit determines the pressure
When whether signal is less than predetermined threshold value, execution unit 303 can be specifically used for：
Close the discharging port strobe of the feeder.
Optionally, in some embodiments of the control device of pulverizing process, when the judging unit determines the pressure
When whether signal is less than predetermined threshold value, execution unit 303 can be specifically used for：
Close the pan feeding port strobe of the feeder.
Optionally, in some embodiments of the control device of pulverizing process, when the judging unit determines the pressure
When whether signal is less than predetermined threshold value, execution unit 303 can be specifically used for：
Close the air-heater of the coal pulverizer.
In addition, in the present embodiment, the control device of the pulverizing process is additionally provided with self-test update, prevents since circuit is short
Road, open circuit report the false judgment for causing program by mistake close to signal caused by switching damage, module point scaling loss.And formulate periodically examination
System is tested, logic judgment experiment monthly or is repeatedly carried out according to equipment frequency of usage, to prevent due to each switching value in scene
Signal error causes feeder to trip.
The control device of pulverizing process can perform the controlling party of pulverizing process in preceding method embodiment in the present embodiment
The technical solution that method performs, implementing principle and technical effect are similar, and details are not described herein again.
In the present embodiment, acquiring unit 301 obtains the real-time pressure signal of feeder internal gas, when judging unit 302
Determine the gas pressure signal be less than predetermined threshold value when, i.e., run coal bin generation hanging or hole capital after selling all securities caused by feeder break coal when, hold
Row unit 303 performs overheating protection action, which acts that hot wind is prevented to enter feeder.Inside feeder
The pressure signal of gas can directly feed back the gas pressure situation inside feeder, therefore, with feeder internal gas
Pressure signal can prevent scaling loss of the hot wind to feeder feed belt as the basis for estimation for performing overheating protection action.
Referring to Fig. 4, another embodiment of the control device of pulverizing process includes in the embodiment of the present application：
The control device 400 can generate bigger difference due to configuration or different performance, can include one or one
It more than central processing unit (centralprocessing units, CPU) 401 (for example, one or more processors) and deposits
Reservoir 405 is stored with one or more application program or data in the memory 405.
Wherein, memory 405 can be volatile storage or persistent storage.Being stored in the program of memory 405 can wrap
One or more modules are included, each module can include operating the series of instructions in server.Further, in
Central processor 401 could be provided as communicating with memory 405, and a series of fingers in memory 405 are performed on control device 400
Order operation.
Control device 400 can also include one or more power supplys 402, one or more wired or wireless nets
Network interface 403, one or more input/output interfaces 404 and/or, one or more operating systems, such as
Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM etc..
Method flow described in the flow and previous embodiment performed by central processing unit 401 in 400 in the present embodiment
The step of middle execution, is similar, and details are not described herein again.It is apparent to those skilled in the art that the convenience for description
With it is succinct, the specific work process of the system, apparatus, and unit of foregoing description may be referred to the correspondence in preceding method embodiment
Process, details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
Division is only a kind of division of logic function, can there is other dividing mode, such as multiple units or component in actual implementation
It may be combined or can be integrated into another system or some features can be ignored or does not perform.It is another, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be the indirect coupling by some interfaces, device or unit
It closes or communicates to connect, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separate, be shown as unit
The component shown may or may not be physical location, you can be located at a place or can also be distributed to multiple
In network element.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
That unit is individually physically present, can also two or more units integrate in a unit.Above-mentioned integrated list
The form that hardware had both may be employed in member is realized, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and is independent production marketing or use
When, it can be stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially
The part to contribute in other words to the prior art or all or part of the technical solution can be in the form of software products
It embodies, which is stored in a storage medium, is used including some instructions so that a computer
Equipment (can be personal computer, server or the network equipment etc.) performs the complete of each embodiment the method for the present invention
Portion or part steps.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to before
Embodiment is stated the present invention is described in detail, it will be understood by those of ordinary skill in the art that：It still can be to preceding
The technical solution recorded in each embodiment is stated to modify or carry out equivalent substitution to which part technical characteristic；And these
Modification is replaced, and the essence of appropriate technical solution is not made to depart from the spirit and scope of various embodiments of the present invention technical solution.
Claims (10)
1. a kind of control method of pulverizing process, which is characterized in that including：
Control system obtains the pressure signal inside feeder；
Whether the control system judges the pressure signal less than predetermined threshold value；
If so, the control system performs overheating protection action, the overheating protection acts to prevent the hot wind of coal pulverizer
Into feeder.
2. according to the method described in claim 1, it is characterized in that, the pressure signal is the pressure of the feeder internal gas
Force signal.
3. according to the method described in claim 1, it is characterized in that, the pressure signal is feed belt inside the feeder
Pressure signal.
4. method according to any one of claims 1 to 3, which is characterized in that the control system performs overheating protection and moves
Work includes：
The control system closes the discharging port strobe of the feeder.
5. according to the method described in claim 4, it is characterized in that, control system execution overheating protection action includes：
The control system closes the pan feeding port strobe of the feeder.
6. according to the method described in claim 4, it is characterized in that, control system execution overheating protection action includes：
The control system closes the air-heater of the coal pulverizer.
7. a kind of control device of pulverizing process, which is characterized in that including：
Acquiring unit, for obtaining the pressure signal inside feeder；
Judging unit, for judging the pressure signal whether less than predetermined threshold value；
Execution unit, for when whether the judging unit determines the pressure signal less than predetermined threshold value, performing overheat and protecting
Shield acts, and the overheating protection acts that hot wind is prevented to enter feeder.
8. control device according to claim 7, which is characterized in that the pressure signal is the pressure of feeder internal gas
Force signal.
9. a kind of computer installation, which is characterized in that including：
Processor, memory, input-output equipment and bus；
The processor, memory, input-output equipment are connected respectively with the bus；
The processor is used to perform following steps：
Obtain the pressure signal inside feeder；
Judge the pressure signal whether less than predetermined threshold value；
When whether the processor determines the pressure signal less than predetermined threshold value, overheating protection action, the overheat are performed
Protection act is used to that hot wind to be prevented to enter feeder.
10. a kind of computer program product for including instruction, which is characterized in that when run on a computer so that described
Computer performs such as claim 1 to 6 any one of them method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711395344.7A CN108062065A (en) | 2017-12-21 | 2017-12-21 | The control method and device of pulverizing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711395344.7A CN108062065A (en) | 2017-12-21 | 2017-12-21 | The control method and device of pulverizing process |
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| Publication Number | Publication Date |
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| CN108062065A true CN108062065A (en) | 2018-05-22 |
Family
ID=62139682
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711395344.7A Pending CN108062065A (en) | 2017-12-21 | 2017-12-21 | The control method and device of pulverizing process |
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Cited By (1)
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| CN109283912A (en) * | 2018-08-07 | 2019-01-29 | 浙江大学 | A kind of distributed sound coordination with the synthesis monitoring method towards intelligent power plant's large size Thermal generation unit pulverized coal preparation system |
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Application publication date: 20180522 |