CN209109379U - Pulverizer outlet temperature control system based on fineness of pulverized coal on-line tuning - Google Patents
Pulverizer outlet temperature control system based on fineness of pulverized coal on-line tuning Download PDFInfo
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- CN209109379U CN209109379U CN201821523666.5U CN201821523666U CN209109379U CN 209109379 U CN209109379 U CN 209109379U CN 201821523666 U CN201821523666 U CN 201821523666U CN 209109379 U CN209109379 U CN 209109379U
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Abstract
The utility model provides a kind of pulverizer outlet temperature control system based on fineness of pulverized coal on-line tuning, which includes dynamic separator rotation-speed measuring device, coal analysis instrument, outlet temperature measuring device, regulating device of air door and PID regulator.Its control principle is as follows: by dynamic separator rotation-speed measuring device, coal analysis instrument and pulverizer outlet temperature measuring device, dynamic separator rotary speed parameter, coal quality parameter and outlet temperature parameter are measured and obtained to dynamic separator revolving speed, coal quality and outlet temperature as control parameter is sent to PID regulator, the coal numerical quantity that PID regulator is obtained according to online coal quantity measurement device adjusts door to hot wind, cold wind adjusts door and First air adjusts door and is adjusted, so that pulverizer outlet temperature be made to stablize the target temperature in setting.Therefore the control precision of the utility model is high, and control method is flexible.
Description
Technical field
The utility model relates to steam power plant technical fields, more specifically, in particular to a kind of thin based on coal dust
Spend the pulverizer outlet temperature control system of on-line tuning.
Background technique
Combusting coal fines are that large thermal power plant is the important means for improving efficiency of fire coal, so coal pulverizer is for general power plant
It is very important for effect.Carrying out pulverized coal grinding using coal pulverizer will cause combustion if coal dust is injected directly into combustion chamber
Room temperature cataclysm is burnt, the stability of burning is influenced, also therefore needs to heat up to coal dust using thermal current.
Referring to FIG. 1, Fig. 1 is a kind of typical pulverizer outlet temperature control system schematic diagram in the prior art.
Manual adjustment and automatic adjustment are broadly divided into for the control of temperature at coal pulverizer outlet a at present, in which: artificial
It adjusts mainly by primary air flow and hot and cold wind ratio is adjusted and realizes, when needing reduces pulverizer outlet temperature, then turn down heat
Air door opens big cold-air flap, and pulverizer outlet temperature is down to desired value in the case where maintaining air quantity constant；Automatic adjustment then needs
Automatic regulating system is wanted to realize, in automatic regulating system, (hot air disperser c) goes out to control coal pulverizer by adjusting cold-air flap b
Mouthful temperature, while air quantity needed for maintaining coal pulverizer by adjusting hot air disperser (cold-air flap).
For automatic regulating system, need to obtain control parameter i.e. coal pulverizer outlet actual temperature, for coal pulverizer
The measurement for exporting actual temperature, generally takes three temperature points, takes the intermediate value of three temperature point measured values as measuring
Actual temperature.The actual temperature measured is compared with the temperature of setting, is just adjusted if there is deviation.
Automatic regulating system is the deviation of the actual temperature value and setting value according to measurement, is formed and is controlled by PID regulator d
System instruction realizes that pulverizer outlet temperature is stablized in setting value by the aperture of damper e.This institute in unit operation
The pulverizer outlet temperature control method generallyd use is guarded and blindness, and occasionally there are biggish safety is abundant for the temperature kept
Amount.
Utility model content
The purpose of this utility model is to provide it is a kind of can flexible modulation pulverizer outlet temperature control system.
To achieve the goals above, the utility model provides the following technical solutions:
A kind of pulverizer outlet temperature control system based on fineness of pulverized coal on-line tuning, includes for Dynamic Separation
The dynamic separator rotation-speed measuring device that device revolving speed measures and the coal analysis instrument for being detected to coal quality,
It thes improvement is that,
Further include have outlet temperature measuring device for being detected to coal dust output temperature, for throttle opening into
The regulating device of air door that row is adjusted and the PID regulator with control function；
The regulating device of air door includes that hot wind adjusts door, cold wind adjusts door and First air adjusts door；
The dynamic separator rotation-speed measuring device, the coal analysis instrument and the outlet temperature measuring device with
PID regulator signal connection, the hot wind adjusts door, the cold wind adjusts door and the First air adjust door with it is described
PID regulator control connection.
Preferably, in above-mentioned control system,
The outlet temperature measuring device is provided at least three, in whole outlet temperature measuring devices, three
A outlet temperature measuring device be obtain outlet temperature parameter main pulverizer outlet temperature measuring device, other be redundancy
Pulverizer outlet temperature measuring device.
Preferably, in above-mentioned control system, the utility model further includes having to be examined for coal amount in opposite grinding coal machine
The online coal quantity measurement device of survey, the online coal quantity measurement device are connect with the PID regulator signal.
Preferably, in above-mentioned control system, the utility model further includes having coal mill system, and the coal mill system includes
There is coal scuttle, the coal scuttle is connected by feeder with coal pulverizer technique, and First air is provided on the coal pulverizer to interface, in institute
It states and is provided with dynamic separator on coal pulverizer, the dynamic separator is provided with coal dust output channel；
The coal analysis instrument is set between the coal scuttle and feeder；
The hot wind adjusts door and the cold wind is adjusted door and connect using parallel way with First air adjusting door, institute
First air adjusting door is stated to connect interface with the First air；
The dynamic separator rotation-speed measuring device is provided on the dynamic separator；
The outlet temperature measuring device is set in the coal dust output channel.
Preferably, the application also provides a kind of pulverizer outlet temperature control method based on fineness of pulverized coal on-line tuning,
It is improved in that
The revolving speed of dynamic separator on coal pulverizer is obtained as dynamic separator rotary speed parameter, obtains and coal cinder is exported by coal scuttle
Coal cinder quality as coal quality parameter, obtain coal pulverizer output coal dust temperature and be used as outlet temperature parameter, by dynamic separator turn
Fast parameter, coal quality parameter and outlet temperature parameter adjust door to the hot wind of coal pulverizer as control parameter, cold wind adjusts door and/
Or First air adjusts door and is adjusted, and outlet temperature is maintained in given threshold.
Preferably, in above-mentioned control method,
The measurement of the outlet temperature parameter uses multiple spot redundance type measurement method, it may be assumed that chooses and is no less than three point conducts
Then measurement point takes the average of wherein three points as outlet temperature parameter.
Preferably, in above-mentioned control method,
The numerical value for obtaining three measurement points takes the numerical value obtained after intermediate value by lead-lag controlling unit as outlet temperature
Spend parameter.
Preferably, in above-mentioned control method,
In primary air flow, constant and First air pressure, temperature are constant, and coal quality is constant with coal-supplying amount, and fineness of pulverized coal is constant,
In the state that pulverizer outlet temperature is constant, the adjusting of pulverizer capacity, according to first increase when increasing and contributing coal amount after air quantity,
The method for reducing checking amount after first subtracting coal amount when contributing.
Preferably, in above-mentioned control method,
Door is adjusted for hot wind, cold wind adjusts door and First air to adjust the adjusting of door includes to manually adjust and automatically
It adjusts；
Joined by suitable coal-air ratio using air quantity parameter as control in manual adjustment mode according to coal-supplying amount parameter
Several pairs of hot winds adjust door and are adjusted, and outlet temperature parameter is adjusted door aperture as cold wind of the control parameter to coal pulverizer and is carried out
It adjusts；
In automatic adjustment mode, using air quantity parameter, coal-supplying amount parameter, coal-air ratio parameter as control parameter to hot wind tune
Section door is adjusted, using dynamic separator rotary speed parameter, coal quality parameter and outlet temperature parameter as control parameter to coal-grinding
The aperture that the cold wind of machine adjusts door is adjusted.
The utility model provides a kind of pulverizer outlet temperature control system based on fineness of pulverized coal on-line tuning, and
Based on the control system, the utility model provides a kind of pulverizer outlet temperature control based on fineness of pulverized coal on-line tuning again
Method.In the pulverizer outlet temperature control system provided by the utility model based on fineness of pulverized coal on-line tuning, setting
There are dynamic separator rotation-speed measuring device, coal analysis instrument, outlet temperature measuring device, regulating device of air door and PID tune
Save device.The basic control principle of the utility model is as follows: by dynamic separator rotation-speed measuring device, coal analysis instrument and mill
Coal machine outlet temperature measuring device, measures dynamic separator revolving speed, coal quality and outlet temperature and obtains Dynamic Separation
Device rotary speed parameter, coal quality parameter and outlet temperature parameter are sent to PID regulator as control parameter, PID regulator root again
The coal numerical quantity obtained according to online coal quantity measurement device adjusts door to hot wind, cold wind adjusts door and First air adjusts door and is adjusted,
To make pulverizer outlet temperature stablize the target temperature in setting.The utility model is combined using multi-parameter adjusts hot wind
Door, cold wind adjust door and First air adjusts door and is adjusted, due to joined dynamic separator rotary speed parameter, coal quality parameter,
Therefore the control precision of the utility model is high, and can also realize the flexible control of the utility model.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical
Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.
Wherein:
Fig. 1 is a kind of typical pulverizer outlet temperature control system schematic diagram in the prior art；
In Fig. 1, the corresponding relationship of component names and appended drawing reference are as follows:
Coal pulverizer exports a, cold-air flap b, hot air disperser c, PID regulator d, air door e.
Fig. 2 is that the pulverizer outlet temperature in a kind of embodiment of the utility model based on fineness of pulverized coal on-line tuning controls system
The system structure schematic diagram of system；
Fig. 3 is that the pulverizer outlet temperature in a kind of embodiment of the utility model based on fineness of pulverized coal on-line tuning controls system
The structure schematic diagram of system；
In Fig. 2 and Fig. 3, the corresponding relationship of component names and appended drawing reference are as follows:
Dynamic separator rotation-speed measuring device 1, coal analysis instrument 2, outlet temperature measuring device 3, PID regulator 4, heat
Wind adjusts door 5, cold wind adjusts door 6, First air adjusts door 7, coal scuttle 8, feeder 9.
Specific embodiment
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.Each example passes through the utility model
The mode of explanation provide rather than limit the utility model.In fact, those skilled in the art will be clear that, this reality is not being departed from
In the case where with novel range or spirit, it can modify in the present invention and modification.For example, being illustrated or described as one
The feature of a part of a embodiment can be used for another embodiment, to generate another embodiment.Thus, it may be desirable to
The utility model includes the such modifications and variations being included into the range of the following claims and their equivalents.
In the description of the present invention, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "top", "bottom" is to be based on the orientation or positional relationship shown in the drawings,
It is merely for convenience of description the utility model rather than requires the utility model that must be constructed and operated in a specific orientation, therefore
It should not be understood as limiting the present invention.Term used in the utility model " connected ", " connection " shall be understood in a broad sense,
For example, it may be being fixedly connected, may be a detachable connection；It can be directly connected, it can also be indirect by intermediate member
It is connected, for the ordinary skill in the art, can understands the concrete meaning of above-mentioned term as the case may be.
Please refer to Fig. 2 and Fig. 3, wherein Fig. 2 is in a kind of embodiment of the utility model based on fineness of pulverized coal on-line tuning
The system structure schematic diagram of pulverizer outlet temperature control system；Fig. 3 is thin based on coal dust in a kind of embodiment of the utility model
Spend the structure schematic diagram of the pulverizer outlet temperature control system of on-line tuning.
The utility model provides a kind of pulverizer outlet temperature control system based on fineness of pulverized coal on-line tuning, at this
In one embodiment of utility model, being somebody's turn to do the pulverizer outlet temperature control system based on fineness of pulverized coal on-line tuning includes
Following device:
1, coal mill system
Coal mill system includes coal scuttle 8, and coal scuttle 8 is held in the mouth for loading lump coal, coal scuttle 8 by feeder 9 and coal pulverizer technique
It connects, the lump coal in coal scuttle 8 can be sent in coal pulverizer by feeder 9, and then coal cinder is ground into coal dust by coal pulverizer.
First air is provided on coal pulverizer to interface, for realizing being blown into for First air.
In being provided with dynamic separator on coal pulverizer, dynamic separator is provided with coal dust output channel, and dynamic separator is
Ancillary equipment on coal pulverizer, for realizing the separation between coal dust and the insufficient coal cinder of grinding, the coal cinder isolated after
Continuous grinding, and coal dust then passes through the output of coal dust output channel and participates in burning.
2, dynamic separator rotation-speed measuring device
Dynamic separator rotation-speed measuring device 1 is the equipment on dynamic separator, is used for the revolving speed to dynamic separator
It measures.
3, coal analysis instrument
Coal analysis instrument 2 for being detected to coal quality, coal analysis instrument 2 be set to coal scuttle 8 and feeder 9 it
Between.
In the present invention, the effect of coal analysis instrument 2 is mainly as follows: passing through the measurement skill of coal analysis instrument 2
Art obtains coal quality parameter in real time, eventually by the coal quality parameter (population parameter in adaptation coal quality database) of acquisition, matches phase
Corresponding pulverizer outlet temperature upper lower limit value.The technology being relatively suitably applied in the utility model at present includes near-infrared
Spectral analysis technique: Chemical Measurement is used with near-infrared model by the near infrared spectrum of current coal on acquisition belt
Method analyzes spectrum, can be obtained ash content, the calorific value, moisture equal size information of the coal.In addition, various have acquisition in real time
The technology of coal parameter function, such as nuclear technology can preset coal applied to the utility model by obtaining coal parameter adaptation
In.
The workflow of coal analysis instrument 2 is as follows: the number for being detected first and obtaining data → and then being obtained
According to being matched, database preset value is provided by coal as received assay system, can realize that data are transmitted automatically by data-interface,
It can be using manual typing → finally export matching result.
4, outlet temperature measuring device
For outlet temperature measuring device 3 for detecting to coal dust output temperature, outlet temperature measuring device 3 is set to coal
In powder output channel.
Specifically, outlet temperature measuring device 3 is provided at least three, in whole outlet temperature measuring devices 3, with
Three outlet temperature measuring devices 3 therein be obtain outlet temperature parameter main pulverizer outlet temperature measuring device, other
For redundancy pulverizer outlet temperature measuring device.
5, regulating device of air door
Regulating device of air door is for being adjusted throttle opening, and specifically, regulating device of air door includes that hot wind is adjusted
Door 5, cold wind adjust door 6 and First air adjusts door 7.Regulating device of air door has MANUAL CONTROL mode and automatically controls mould
Formula.
In the present invention, hot wind adjust door 5 and cold wind adjust door 6 using after parallel way connection again with First air
It adjusts door 7 to connect, First air adjusts door 7 and First air and connects interface.
6, PID regulator
PID regulator 4 has control function, dynamic separator rotation-speed measuring device 1, coal analysis instrument 2 and outlet
Temperature measuring device 3 is connect with 4 signal of PID regulator, hot wind adjusts door 5, cold wind adjust door 6 and First air adjust door 7 with
The control connection of PID regulator 4.
In the present invention, PID regulator 4 is the adjustment module that can be realized PID regulatory function, according to using field
The difference of scape, can be set multiple, and each PID regulator 4 can work independently.
7, online coal quantity measurement device
Online coal quantity measurement device is for detecting the coal amount in coal pulverizer, online coal quantity measurement device and 4 signal of PID regulator
Connection.
Based on above system, the utility model additionally provides a kind of coal pulverizer outlet temperature based on fineness of pulverized coal on-line tuning
Spend control method.
In the control method, the revolving speed of dynamic separator is joined as dynamic separator revolving speed on acquisition coal pulverizer first
Number obtains and exports coal-fired coal quality parameter by coal scuttle 8, obtains coal pulverizer output coal dust temperature as outlet temperature parameter, will move
State separator rotary speed parameter, coal quality parameter and outlet temperature parameter adjust door 5, cold to the hot wind of coal pulverizer as control parameter
Wind adjusts door 6 and/or First air adjusts door 7 and is adjusted, and outlet temperature is maintained in given threshold.
The measurement of outlet temperature parameter uses multiple spot redundance type measurement method, it may be assumed that chooses no less than three points as measurement
Then point takes the average of wherein three points as outlet temperature parameter.Obtain three measurement points numerical value take after intermediate value by
The numerical value that lead-lag controlling unit obtains is as outlet temperature parameter.
In the present invention, pressure constant in primary air flow and First air, temperature are constant, and coal quality and coal-supplying amount are permanent
Fixed, fineness of pulverized coal is constant, and under the constant stable state of pulverizer outlet temperature, the adjusting of pulverizer capacity is adjusted as follows:
First subtract checking amount after coal amount when increasing coal amount after first increasing air quantity when contributing, reducing power output.
Door 5 is adjusted for hot wind, cold wind adjust door 6 and First air adjust door 7 adjusting include manually adjust and
Automatic adjustment；Joined by suitable coal-air ratio using air quantity parameter as control in manual adjustment mode according to coal-supplying amount parameter
Several pairs of hot winds adjust doors 5 and are adjusted, using outlet temperature parameter as control parameter to cold wind adjusting 6 aperture of door of coal pulverizer into
Row is adjusted；In automatic adjustment mode, using air quantity parameter, coal-supplying amount parameter, coal-air ratio parameter as control parameter to hot wind tune
Section door 5 is adjusted, using dynamic separator rotary speed parameter, coal quality parameter and outlet temperature parameter as control parameter to coal-grinding
The aperture that the cold wind of machine adjusts door 6 is adjusted.
Pulverizer outlet temperature control method provided by the utility model is made by adjusting coal pulverizer inlet throttle opening
Grind coal amount in its (coal pulverizer inlet throttle opening) and coal pulverizer is adapted, and its object is to keep pulverizer outlet temperature steady
It is scheduled on the target temperature of setting.
Pulverizer outlet temperature control system provided by the utility model based on fineness of pulverized coal on-line tuning, suitable for matching
There is the control of the fineness of pulverized coal pulverizer outlet temperature of the cold First air pressurized direct pulverizing coal system of adjustable medium-speed pulverizer online
System.
In the present invention, the pulverizer outlet temperature control method disclosed in applies also for various coal pulverizer outlets
Temperature control system, it is numerous to list herein.In addition, it is necessary to explanation: the utility model can also be in scattered control system
It is applied in DCS, field bus control system FCS.
In an embodiment of the utility model, the control system is by dynamic separator rotation-speed measuring device 1, coal quality
Analysis meter 2, regulating device of air door, pulverizer outlet temperature measuring device 3, online coal quantity measurement device and 4 groups of PID regulator
At regulating device of air door has specifically included hot wind and adjusted door 5, cold wind adjusting door 6 and First air adjusting door 7.Based on above-mentioned dress
Set, equipment, the basic control principle of the utility model such as instrument it is as follows: by dynamic separator rotation-speed measuring device 1, coal analysis
Instrument 2 and pulverizer outlet temperature measuring device 3, measure simultaneously dynamic separator revolving speed, coal quality and outlet temperature
Dynamic separator rotary speed parameter, coal quality parameter and outlet temperature parameter are obtained as control parameter and is sent to PID regulator 4,
PID regulator 4 adjusts door 5 to hot wind further according to the coal numerical quantity that online coal quantity measurement device obtains, cold wind adjusts door 6 and First air
It adjusts door 7 to be adjusted, so that pulverizer outlet temperature be made to stablize the target temperature in setting.
In the present invention, the measurement of pulverizer outlet temperature uses multiple spot redundance type measurement method, that is, chooses many
In three points as measurement point, then take the average of wherein three points as outlet temperature parameter.
Specifically, three pulverizer outlet temperature measuring devices 3 are selected as the main coal pulverizer for obtaining outlet temperature parameter
Outlet temperature measuring device, other are redundancy pulverizer outlet temperature measuring device.Main pulverizer outlet temperature measuring device obtains
Three temperature signals taken are set as T1, T2, T3, and process three takes intermediate value and (lead-lag controls by lead-lag control
Realize that the control of the acquisition number of samples before and after trigger point, lag anticipatory control are combined using preset counter and postposition counter
The advantages of correction or lag and anticipatory control, can improve the mapping and steady-state performance of system simultaneously, that is, have quick response spy concurrently
Property and good stable state accuracy.) value (input as PID adjustment module) after link, it is denoted as: pulverizer outlet temperature measured value
TP.In PID regulator 4, TP is compared with the setting value TS in PID regulator 4, (is greater than dead if there is deviation delta t
Area, the built-in function of PID regulator 4), then output signal occurs after 4 operation of PID regulator(in formula, e (t) is deviation, and y (t) is output valve, and t is the time, Kp be than
Example coefficient, Ti is integration time constant, and Td is derivative time constant.In function adjustable parameter include ratio, the time of integration,
Derivative time completes parameter tuning in actual application).
In PID regulator 4, measured value (dynamic separator rotary speed parameter, coal quality parameter and outlet temperature parameter) with
Given value (dynamic separator rotary speed threshold value, coal quality threshold value and outlet temperature threshold value) deviation carries out PID arithmetic, and output control refers to
It enables.If in regulating device of air door, hot and cold baffle is all switched to MANUAL CONTROL mode, then control instruction tracking cold air damper is opened
Degree.
The utility model can be automatic adjustment for the adjusting of regulating device of air door, be also possible to manually adjust.It is controlling
In the case that parameter acquisition processed is more improved, regulating device of air door is automatic adjustment, based on signal quality judgement, if control ginseng
Number acquisition is not perfect, then switching is forced to manually control.Specifically, during warm mill, it is 10% that cold wind, which adjusts 6 control instruction of door,；
During warm mill, it is 10% that hot wind, which adjusts 5 control instruction of door,；Design has hot wind to adjust 5 control instruction of door and hot-air damper aperture
Signal comparing element, if its deviation is more than 10%, outlet temperature control is forced to cut manually.Design has cold wind to adjust the control of door 6
Instruction and cold air damper opening amount signal comparing element, if its deviation is more than 10%, outlet temperature control is forced to cut manually.Certainly
When dynamic control mode, coal pulverizer outlet temperature is controlled by the coordination of the cold air damper, hot-air damper of regulating device of air door
Degree, coal pulverizer outlet wind powder mixture temperature change act cold-air flap first, the aperture of the aperture tracking cold-air flap of hot air disperser
And change.
In primary air flow, constant and First air pressure, temperature are constant, and coal quality is constant with coal-supplying amount, and fineness of pulverized coal is constant,
In the state that pulverizer outlet temperature is constant (stable state), the adjusting of pulverizer capacity, after first increasing air quantity when increasing and contributing
Coal amount, the method for reducing checking amount after first subtracting coal amount when contributing.
Generating set is connected to the instruction of load down, be transformed into this system be exactly hot wind adjustment door position feedback disturbance,
Cold wind adjustment door linkage, the result of adjustment are transferred to by adder are as follows: no matter hot air disperser position feedback reduces how many not shadows
Ring the stabilization of pulverizer outlet temperature.
The characteristics of the utility model, is: in coal varitation, using fineness of pulverized coal and dynamic separator revolving speed as
Control parameter controls outlet temperature.
In the utility model, realized under normal circumstances using general technological means in system, design parameter therein
It is then to be determined for some specific application scenarios, some adjustment is had for the data that different systems specifically uses, but
Though these data how value, the utility model will all retain using technological means such as manual tracking, override control.
Pulverizer outlet temperature is limited in a temperature range, to avoid low temperature moisture condensation and high temperature kindling.
It is first converted into and increases primary air flow instruction, coal-supplying amount is using the output measurement result of primary air flow as coal-supplying amount
Instruction.Before coal-supplying amount does not change, increase hot wind, cold wind are uncomfortable, and pulverizer outlet temperature is caused to increase；Increase in primary air flow
Afterwards, coal-supplying amount increases, and pulverizer outlet temperature is caused to decline.Control system attempts setting pulverizer outlet temperature stabilization
Value, therefore has occurred the coupling adjustment process of hot wind, cold wind, and economic adjustment process is that increase hot wind, cold wind constant but practical
First time temperature adjusting after upper air volume increase is to reduce cold wind aperture by increasing hot wind aperture since air quantity demand increases
Maintain pulverizer outlet temperature.
The above is only the preferred embodiments of the utility model, are not intended to limit the utility model, for the skill of this field
For art personnel, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model, made
Any modification, equivalent substitution, improvement and etc., should be included within the scope of protection of this utility model.
Claims (4)
1. a kind of pulverizer outlet temperature control system based on fineness of pulverized coal on-line tuning, includes for dynamic separator
The dynamic separator rotation-speed measuring device (1) that revolving speed measures and the coal analysis instrument for being detected to coal quality
(2), which is characterized in that
Further include have outlet temperature measuring device (3) for being detected to coal dust output temperature, for throttle opening into
The regulating device of air door that row is adjusted and the PID regulator (4) with control function；
The regulating device of air door includes that hot wind adjusts door (5), cold wind adjusts door (6) and First air adjusts door (7)；
The dynamic separator rotation-speed measuring device, the coal analysis instrument and the outlet temperature measuring device with it is described
The connection of PID regulator signal, the hot wind adjusts door, the cold wind adjusts door and the First air adjusts door and the PID
Adjuster control connection.
2. the pulverizer outlet temperature control system according to claim 1 based on fineness of pulverized coal on-line tuning, feature
It is,
The outlet temperature measuring device is provided at least three, in whole outlet temperature measuring devices, three institutes
State outlet temperature measuring device be obtain outlet temperature parameter main pulverizer outlet temperature measuring device, other be redundancy coal-grinding
Machine outlet temperature measuring device.
3. the pulverizer outlet temperature control system according to claim 1 or 2 based on fineness of pulverized coal on-line tuning, special
Sign is,
Further include the online coal quantity measurement device having for coal amount to be detected in opposite grinding coal machine, the online coal quantity measurement device with it is described
The connection of PID regulator signal.
4. the pulverizer outlet temperature control system according to claim 1 based on fineness of pulverized coal on-line tuning, feature
It is,
It further include having coal mill system, the coal mill system includes coal scuttle (8), and the coal scuttle passes through feeder (9) and coal pulverizer
Technique linking is provided with First air on the coal pulverizer to interface, is provided with dynamic separator on Yu Suoshu coal pulverizer, described dynamic
State separator is provided with coal dust output channel；
The coal analysis instrument is set between the coal scuttle and feeder；
The hot wind adjusts door and the cold wind is adjusted door and connect using parallel way with First air adjusting door, and described one
Secondary wind adjusts door and connect with the First air to interface；
The dynamic separator rotation-speed measuring device is provided on the dynamic separator；
The outlet temperature measuring device is set in the coal dust output channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821523666.5U CN209109379U (en) | 2018-09-18 | 2018-09-18 | Pulverizer outlet temperature control system based on fineness of pulverized coal on-line tuning |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821523666.5U CN209109379U (en) | 2018-09-18 | 2018-09-18 | Pulverizer outlet temperature control system based on fineness of pulverized coal on-line tuning |
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| CN209109379U true CN209109379U (en) | 2019-07-16 |
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ID=67198805
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| CN201821523666.5U Active CN209109379U (en) | 2018-09-18 | 2018-09-18 | Pulverizer outlet temperature control system based on fineness of pulverized coal on-line tuning |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109174423A (en) * | 2018-09-18 | 2019-01-11 | 国电龙源节能技术有限公司 | Pulverizer outlet temperature control system and method based on fineness of pulverized coal on-line tuning |
| CN116116554A (en) * | 2023-02-10 | 2023-05-16 | 华能曲阜热电有限公司 | Automatic purging system and method for accumulated powder of cooling air pipe |
-
2018
- 2018-09-18 CN CN201821523666.5U patent/CN209109379U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109174423A (en) * | 2018-09-18 | 2019-01-11 | 国电龙源节能技术有限公司 | Pulverizer outlet temperature control system and method based on fineness of pulverized coal on-line tuning |
| CN109174423B (en) * | 2018-09-18 | 2023-08-11 | 国能龙源蓝天节能技术有限公司 | Coal mill outlet temperature control system and method based on-line adjustment of pulverized coal fineness |
| CN116116554A (en) * | 2023-02-10 | 2023-05-16 | 华能曲阜热电有限公司 | Automatic purging system and method for accumulated powder of cooling air pipe |
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