CN209302869U - Coal pulverizer automatic regulating system - Google Patents
Coal pulverizer automatic regulating system Download PDFInfo
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- CN209302869U CN209302869U CN201821591357.1U CN201821591357U CN209302869U CN 209302869 U CN209302869 U CN 209302869U CN 201821591357 U CN201821591357 U CN 201821591357U CN 209302869 U CN209302869 U CN 209302869U
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- coal
- coal pulverizer
- pulverizer
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Abstract
The utility model provides a kind of coal pulverizer automatic regulating system, the coal pulverizer automatic regulating system is ground coal cinder using the coal pulverizer Automatic adjustment method, in the present invention, which is made of coal scuttle, feeder, coal pulverizer and separator.Wherein, feeder is provided with online coal quantity measurement device, can measure to coal conveying capacity；Coal pulverizer additionally provides load apparatus for adjusting force using variable loading force formula coal pulverizer structure design, and the loading force by loading apparatus for adjusting force opposite grinding coal machine is adjusted；Separator then carries out separative efficiency control by speed setting unit.In this way, the utility model enables to coal pulverizer automatic regulating system to automatically adjust the amount of delivering coal according to the operation conditions of thermal power generation unit using coal pulverizer Automatic adjustment method carry out system obtained of controlling database, control mode is flexible.
Description
Technical field
The utility model relates to steam power plant technical fields, and more specifically, in particular to a kind of coal pulverizer is automatic
Regulating system.
Background technique
In China, large-scale thermal power machine group faces energy-saving and emission-reduction and the unit flexibility dual-pressure effect of high request
Under lead to the downslide of unit economy, large-size thermal power plant all starts with all kinds of energy-conserving and emission-cutting technologies and improves unit spirit
Active technologies are transformed large-scale thermal power machine group.
In thermal power plant, each system coordination control of full process stream journey and optimisation strategy are insufficient, fail performance system
The energy-saving potential of facility.In addition, the scarce capacity of unit depth peak regulation, Economical Operation of Light-Loaded Units decline is obvious, and AGC is not
It is able to achieve full load investment.
In addition, constitute the equipment of large-scale thermal power machine group there is also certain technological deficiency, for example, it is traditional fixed
Grinding roller loading system (i.e. in the unit time, cannot guarantee certain fineness of pulverized coal item with pulverizer capacity due to grinding roller loading force
Under part, raw coal amount that coal pulverizer can be ground) variation and change, this is easy for pulverizer capacity is caused to reduce, power consumption increase etc.
A series of problems.
To solve the above-mentioned problems, the prior art increases a set of variable loading system on the basis of traditional coal pulverizer, increases
If variable loading system although solve the problems, such as that conventional fixed-type grinding roller loading system exists, extend equipment life, reduce
Power consumption, but its do not grasp in the case of different fineness of pulverized coal grinding roller loading force, dynamic separator revolving speed and pulverizer capacity it
Between rule, also without regulating system adaptable therewith, the adjustment of loading force is blindness.It is solving both at home and abroad to adding at present
The relationship carried between power, dynamic separator revolving speed and pulverizer capacity lacks research and application.
In conclusion how to solve the problems, such as that the existing regulation flexibility of traditional thermal power generation unit is poor, become this
Field technical staff's urgent problem to be solved.
Utility model content
The purpose of this utility model is to provide it is a kind of can flexible modulation thermal power generation unit coal-supply system.
To achieve the goals above, the utility model provides the following technical solutions:
A kind of coal pulverizer automatic regulating system includes to be connected for the coal scuttle of coal cinder output and with the coal scuttle technique
Feeder, the feeder is provided with online coal quantity measurement device.
Based on said structure design, coal pulverizer automatic regulating system provided by the utility model further include:
The coal pulverizer being connected with the feeder technique, the coal pulverizer are variable loading force formula coal pulverizer, the coal-grinding
Machine includes organic frame, is equipped with grinding roller by variable loading system in Yu Suoshu rack, is connected with the variable loading system signal
Load apparatus for adjusting force；
The separator being connected with the coal pulverizer technique, the separator are dynamic separator, and the separator includes
Rotating electric machine is separated, is connected with speed setting unit with the rotating electric machine signal that separates；
The coal dust output pipe being connect with the separator.
Preferably, the utility model further includes having master controller, and the master controller and the feeder, the coal measure
Measure device, the coal pulverizer, the load apparatus for adjusting force, the dynamic separator, speed setting unit signal connection.
Preferably, the coal scuttle is funnel-form, and the bottom of Yu Suoshu coal scuttle offers coal scuttle outlet.
Preferably, conveying measuring belt is equipped with inside the feeder, equipped with electricity below the conveying measuring belt
Sub- weighing device, the electronic weighing device include belted electronic balance, weighing sensor and velocity sensor.
Preferably, coal-grinding room is provided in Yu Suoshu rack, be provided in Yu Suoshu coal-grinding room mill and with the mill
The grinding roller of disk cooperation.
The utility model additionally provides a kind of coal pulverizer Automatic adjustment method, in the coal pulverizer Automatic adjustment method,
Include:
Step 1: the dynamic separator in the case of obtaining different pulverizer capacities using test method(s) is applicable in revolving speed, and conduct
The control signal of pulverizer capacity is spare, determines the loading force in the case of different pulverizer capacities using test method(s), and as adding
The control signal for carrying regulating device is spare, is believed according to the control of the control signal and loading adjusting device that obtain pulverizer capacity
Number association dynamic separator revolving speed, coal-supplying amount and loading force and being formed are controlled database；
Step 2: according to it is established it is described control database, utilize coal pulverizer automatic regulating system pair as described above
The operating status of coal pulverizer is controlled.
Preferably, in said step 1, coal is selected first, after selecting coal, is existed according to different coal-supplying amounts
In 10%~100% power output section, tested in batches with 10% for a constant interval, in test process each time
In, empirically ventilation quantity is to wind, by test determine fineness of pulverized coal meet the requirements and the loading force of different power consumptions.
The utility model provides a kind of coal pulverizer automatic regulating system and a kind of coal pulverizer Automatic adjustment method, the mill
Coal machine automatic regulating system is ground coal cinder using the coal pulverizer Automatic adjustment method, in the present invention, should
Coal pulverizer automatic regulating system is made of coal scuttle, feeder, coal pulverizer and separator.Wherein, feeder is provided with coal measurement
Measure device, can coal conveying capacity measure；Coal pulverizer is additionally provided using variable loading force formula coal pulverizer structure design
Apparatus for adjusting force is loaded, the loading force by loading apparatus for adjusting force opposite grinding coal machine is adjusted；Separator then passes through revolving speed tune
Regulating device carries out separative efficiency control.In this way, the utility model utilizes coal pulverizer Automatic adjustment method control data obtained
Library carries out system, and coal pulverizer automatic regulating system is enabled to be delivered coal according to the automatic adjustment of the operation conditions of thermal power generation unit
Amount, control mode are flexible.
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 the structural representation block diagram of coal pulverizer automatic regulating system in an embodiment of the present invention.
Description of symbols:
Coal scuttle 1, feeder 2, online coal quantity measurement device 3, coal pulverizer 4, load apparatus for adjusting force 5,
Separator 6, speed setting unit 7.
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.
Referring to FIG. 1, Fig. 1 is the structural representation box of coal pulverizer automatic regulating system in an embodiment of the present invention
Figure.
The utility model provides a kind of coal pulverizer automatic regulating system, which includes: to be used for
The coal scuttle 1 of coal cinder output；The feeder 2 being connected with 1 technique of coal scuttle, feeder 2 are provided with online coal quantity measurement device 3；With feeder 2
The coal pulverizer 4 of technique linking, coal pulverizer 4 are variable loading force formula coal pulverizer 4, and coal pulverizer 4 includes organic frame, in passing through in rack
Variable loading system is equipped with grinding roller, is connected with load apparatus for adjusting force 5 with variable loading system signal；It is connected with 4 technique of coal pulverizer
Separator 6, separator 6 be dynamic separator, separator 6 includes separation rotating electric machine, with separate rotating electric machine signal connect
It is connected to speed setting unit 7；The coal dust output pipe being connect with separator 6.
In said structure design, coal scuttle 1 is connect with coal bunker, is provided with gate on the link position of coal bunker and coal scuttle 1,
By gate the coal cinder in coal bunker is entered in coal scuttle 1.Coal scuttle 1 is designed using funnel-shaped structure, in the bottom of coal scuttle 1
Coal scuttle outlet is offered, in this way, coal cinder can be fallen under gravity on feeder 2 after coal scuttle outlet is opened.Feeder
2 be a kind of mechanical equipment that coal pulverizer coal-supplying amount can be accurately adjusted according to burden requirement.Feeder 2 is using electronic control skin
Belt coal briquette conveying device.Coal cinder in coal scuttle 1 drops on feeder 2, continuous by the conveying measuring belt inside feeder 2
Uniformly in conveying coal pulverizer 4, electronic weighing device is housed below conveying measuring belt, the electronic weighing device is mainly by height
The belted electronic balance of precision forms, and weighing sensor generates an electric signal proportional to the weight of coal and velocity sensor inspection
The belt speed signal measured, while it being sent into integrator, instantaneous flow and cumulative amount are obtained after integrating.Coal pulverizer 4 is a kind of
By coal crusher and the mechanical equipment of coal dust can be worn into, in the present invention, coal pulverizer 4 is variable loading force formula coal-grinding
Machine.Coal pulverizer 4 includes organic frame, and coal-grinding room is provided in rack, and mill is provided in coal-grinding room and is cooperated with mill
Grinding roller, grinding roller is mounted on the rack by variable loading system.Specifically, variable loading system can be hydraulic variable loading system,
It may be spring variable loading system.
Above-mentioned grinding roller is mounted on the rack by variable loading system, structure type is as follows: grinding roller and rack can
Flexible connection form is taken, variable loading system is hydraulic system, and variable loading system is arranged below grinding roller, passes through what is pushed up upwards
Mode jacks up grinding roller from lower part, forms adjustable reaction force, or variable loading system is arranged above grinding roller, pass through to
The mode of pushing compresses grinding roller from top, forms adjustable positive force.
In coal pulverizer 4, the preparation of coal dust is completion of milling of being pressurizeed in mill by grinding roller, and variable loading system passes through
Proportional pressure control valve pressure size is adjusted, to change the oil pressure of accumulator and oil cylinder to realize hydraulic loaded oil pressure with coal pulverizer
4 power output variation, this makes it possible to reach optimal milling efficiency.
Coal cinder becomes coal dust under the action of coal pulverizer 4, and then coal dust is separated by dynamic separator.Dynamic separator
It is a kind of mechanical equipment that can carry out thickness separation to coal dust, directly affects the finger such as power output, fineness of pulverized coal of coal pulverizer 4
Mark.The characteristics of dynamic separator, is as follows: being suitable for various bituminous coal, meager coal and each power coal, also, dynamic separator can be with
Substitution static separation device completely.Using dynamic separator, fineness of pulverized coal can be improved, unburned carbon in flue dust is reduced, to improve combustion
Efficiency is burnt, environmental protection is conducive to.Meanwhile coal pulverizer 4 can also be promoted under conditions of identical fineness of pulverized coal using dynamic separator
Power output, reduce the fineness that coal pulverizer 4 exports coal dust, and the power consumption of coal pulverizer 4 can be reduced.
The utility model is suitable for the cold direct-firing system of First air positive pressure equipped with fineness of pulverized coal adjustable medium-speed pulverizer 4 online
The automatic control of the coal pulverizer 4 of powder system is mainly characterized in that 4 loading force of coal pulverizer and dynamic separator revolving speed can bases
Load automatic adjustment.The composition of system is as follows in the utility model: equipped with intelligence instrument and can provide the skin of coal-supplying amount signal
Belt electronic weighing type coal feeder 2 and by become loading force change contribute and have the adjustable dynamic separator of frequency conversion medium-speed pulverizer
Coal machine 4.The work flow of the utility model is as follows: the coal-fired of thermal power plant enters feeder 2 from coal scuttle 1, is transmitted to mill through belt
Coal machine 4, the coal dust that coal pulverizer 4 is ground become the coal dust that can be delivered to boiler combustion after separator 6.Wherein, feeder
2 coal amount generates characterization coal-supplying amount standard signal by online coal quantity measurement device 3, and dynamic separator is turned by can provide dynamic separator
The dynamic separator speed setting unit 7 of fast signal controls.In coal pulverizer 4, the coal pulverizer 4 equipped with changeable grinding pressure is loaded
Apparatus for adjusting force 5.
In order to realize the automatic control of coal pulverizer automatic regulating system, the utility model additionally provides master controller, master control
Device processed and feeder 2, online coal quantity measurement device 3, coal pulverizer 4, load apparatus for adjusting force 5, dynamic separator, speed setting unit 7
Signal connection.
The utility model additionally provides a kind of coal pulverizer Automatic adjustment method, which includes:
Step 1: the dynamic separator in the case of obtaining different pulverizer capacities using test method(s) is applicable in revolving speed, and conduct
The control signal of pulverizer capacity is spare, the optimal loading force in the case of different pulverizer capacities is determined using test method(s), and make
It is spare for the control signal of loading adjusting device, according to the control signal and the control of loading adjusting device for obtaining pulverizer capacity
Signal processed is associated with dynamic separator revolving speed, coal-supplying amount and loading force and is formed and controlled database；
Step 2: being controlled database according to established, using such as above-mentioned coal pulverizer automatic regulating system to coal pulverizer 4
Operating status controlled.
Specifically, in step 1, coal is selected first, after selecting coal, according to different coal-supplying amounts 10%
In~100% power output section, is tested with 10% for a constant interval, during test each time, pressed in batches
According to experience ventilation quantity to wind, by test determine fineness of pulverized coal meet the requirements and the loading force of different power consumptions.
The basic data source of the utility model is as follows: it is coal-fired to enter the weighing of feeder 2 from coal scuttle 1, obtain coal-supplying amount letter
Number, the signal as pulverizer capacity uses；Determine that the dynamic separator in the case of different pulverizer capacities is suitable using test method(s)
With revolving speed, inputs and instruct as dynamic separator frequency converter；Test method(s) determines the optimal load in the case of different pulverizer capacities
Power, the input as loading adjusting device instruct.Test process: to a certain specific coal, (such as: 10% according to different coal-supplying amounts
~100% power output section, with 10% for a constant interval), empirically (technical staff formulates ventilation quantity, generally takes wind powder
Proportion relation is empirical value), test determine fineness of pulverized coal meet the requirements from the loading force of different power consumptions, thus obtain control data
Library.
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 (5)
1. a kind of coal pulverizer automatic regulating system includes to be connected for the coal scuttle (1) of coal cinder output and with the coal scuttle (1)
Feeder (2), the feeder is provided with online coal quantity measurement device (3), which is characterized in that further include:
The coal pulverizer (4) being connected with the feeder technique, the coal pulverizer are variable loading force formula coal pulverizer, the coal pulverizer
Including organic frame, grinding roller is equipped with by variable loading system in Yu Suoshu rack, is connected with and adds with the variable loading system signal
It carries apparatus for adjusting force (5)；
The separator (6) being connected with the coal pulverizer technique, the separator are dynamic separator, and the separator includes point
From rotating electric machine, speed setting unit (7) are connected with the rotating electric machine signal that separates；
The coal dust output pipe being connect with the separator.
2. coal pulverizer automatic regulating system according to claim 1, which is characterized in that
It further include having master controller, the master controller and the feeder, the online coal quantity measurement device, the coal pulverizer, institute
State load apparatus for adjusting force, the dynamic separator, speed setting unit signal connection.
3. coal pulverizer automatic regulating system according to claim 1, which is characterized in that
The coal scuttle is funnel-form, and the bottom of Yu Suoshu coal scuttle offers coal scuttle outlet.
4. coal pulverizer automatic regulating system according to claim 1, which is characterized in that
It is equipped with conveying measuring belt inside the feeder, electronic weighing device is housed below the conveying measuring belt,
The electronic weighing device includes belted electronic balance, weighing sensor and velocity sensor.
5. coal pulverizer automatic regulating system according to claim 1, which is characterized in that
In being provided with coal-grinding room in the rack, be provided in Yu Suoshu coal-grinding room mill and with the mill cooperation described in
Grinding roller.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821591357.1U CN209302869U (en) | 2018-09-28 | 2018-09-28 | Coal pulverizer automatic regulating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821591357.1U CN209302869U (en) | 2018-09-28 | 2018-09-28 | Coal pulverizer automatic regulating system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109174321A (en) * | 2018-09-28 | 2019-01-11 | 国电龙源节能技术有限公司 | Coal pulverizer automatic regulating system and coal pulverizer Automatic adjustment method |
| CN112871429A (en) * | 2021-02-02 | 2021-06-01 | 浙江浙能技术研究院有限公司 | Rare earth motor control method of coal mill |
| CN114950635A (en) * | 2022-06-08 | 2022-08-30 | 辽宁五寰特种材料与智能装备产业技术研究院有限公司 | Feeding method of high-pressure roller mill capable of automatically stabilizing material level |
-
2018
- 2018-09-28 CN CN201821591357.1U patent/CN209302869U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109174321A (en) * | 2018-09-28 | 2019-01-11 | 国电龙源节能技术有限公司 | Coal pulverizer automatic regulating system and coal pulverizer Automatic adjustment method |
| CN112871429A (en) * | 2021-02-02 | 2021-06-01 | 浙江浙能技术研究院有限公司 | Rare earth motor control method of coal mill |
| CN112871429B (en) * | 2021-02-02 | 2022-05-31 | 浙江浙能技术研究院有限公司 | Rare earth motor control method of coal mill |
| CN114950635A (en) * | 2022-06-08 | 2022-08-30 | 辽宁五寰特种材料与智能装备产业技术研究院有限公司 | Feeding method of high-pressure roller mill capable of automatically stabilizing material level |
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Address after: 102200 room 5413, building 305, Guodian New Energy Technology Research Institute, future science city, Beiqijia Town, Changping District, Beijing Patentee after: Guoneng Longyuan Lantian Energy Saving Technology Co.,Ltd. Address before: Room 1205, building 1, courtyard 16, Middle West Fourth Ring Road, Haidian District, Beijing 100039 Patentee before: GUODIAN LONGYUAN ENERGY SAVING TECHNOLOGY Co.,Ltd. |