CN110207146A - A kind of high-precision Industrial Boiler Temperature-controlled appliance - Google Patents
A kind of high-precision Industrial Boiler Temperature-controlled appliance Download PDFInfo
- Publication number
- CN110207146A CN110207146A CN201910488264.9A CN201910488264A CN110207146A CN 110207146 A CN110207146 A CN 110207146A CN 201910488264 A CN201910488264 A CN 201910488264A CN 110207146 A CN110207146 A CN 110207146A
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- China
- Prior art keywords
- shell
- admission line
- boiler
- controlled appliance
- flour mill
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air supply
- F23N1/025—Regulating fuel supply conjointly with air supply using electrical or electromechanical means
Abstract
The present invention relates to field of boilers, and disclose a kind of high-precision Industrial Boiler Temperature-controlled appliance, including flour mill, the top of the flour mill is connect with feed hopper, the flour mill is connected to by feed pipe with the shell of cavity structure, driving motor is provided with above the shell, the inside of the shell is equipped with screw rod, the top of the screw rod passes through the top surface of shell and is fixedly connected with the shaft for being located at driving motor lower end, the inside bottom of the shell is equipped with the discharge port of funnel-shaped structure, the bottom end of the shell is connected to admission line, the admission line and be located at shell on the right side of corresponding position be provided with gas flowmeter, the admission line and corresponding position in left side for being located at shell is provided with poweder flowmeter, the left end of the admission line is connected to the inside of boiler.By the supply amount of control coal dust or oxygen, i.e., the amount for the thermal energy that controllable coal dust firing generates, and then realize and the high-precision of boiler temperature is regulated and controled.
Description
Technical field
The present invention relates to field of boilers, specially a kind of high-precision Industrial Boiler Temperature-controlled appliance.
Background technique
Industrial Boiler includes steam boiler, coal-burning boiler and gas fired-boiler, and current Industrial Boiler is still with coal-fired pot
Furnace is in the great majority, and in boiler system, the device for controlling boiler temperature is of crucial importance, such as in the hair of Thermal generation unit
In electric process, the coal of burning, which heats water, generates steam, will be so that water quickly generates steaming if the heat that coal combustion generates is excessive
Vapour and steam maintain that the higher temperature time is longer, this meeting so that the metallic conduit of guidance steam flowing intensity decline, seriously
Can even burn the temperature end of superheater, bring hidden danger to safety in production.
The product that patent document CN108800102A is provided at the steam end of boiler by being arranged for detecting vapor (steam) temperature
Device, and estimate temperature by look-ahead device preset algorithm, but the generation of steam is to have at detection device to being moved to
Certain distance, it is therefore desirable to a period of time, and it is also to need that the heat that coal combustion generates, which makes water generate the steam of excessive temperature,
The time is wanted, therefore is adjusted again after predictive algorithm has estimated temperature, is there are a time difference, this will lead to adjust
It is whole not prompt enough, in addition, inhibit vapor (steam) temperature by way of desuperheating water is added into boiler after estimating temperature raising,
Although effect can be reached, can also make water temperature drop, in a period of time, water is vaporized into steam conversion ratio can under
Drop, and then cause the power generation of generating set to be affected, therefore this cooling method is worthless.
Summary of the invention
In view of the above-mentioned problems, the purpose of the present invention is to provide a kind of high-precision Industrial Boiler Temperature-controlled appliance, solution
The device of the control boiler temperature certainly proposed in background technique, it is biggish that temperature adjusts not prompt enough and cooling method defect
Problem.
The present invention is to realize that technical purpose adopts the following technical scheme that
A kind of high-precision Industrial Boiler Temperature-controlled appliance, including flour mill, the top of the flour mill and feed hopper
Connection, the flour mill are connected to by feed pipe with the shell of cavity structure, are provided with driving motor above the shell,
The inside of the shell is equipped with screw rod, and the top of the screw rod passes through the top surface of shell and turns with positioned at driving motor lower end
Axis is fixedly connected, and the inside bottom of the shell is equipped with the discharge port of funnel-shaped structure, the bottom end of the shell and admission line
Connection, the admission line and the corresponding position being located on the right side of shell are provided with gas flowmeter, the admission line and are located at
The corresponding position in the left side of shell is provided with poweder flowmeter, and the left end of the admission line is connected to the inside of boiler, described
Part between admission line and boiler is provided with heating tube.
Preferably, the admission line uses heat resistant and wear resistant material.
Preferably, the admission line and boiler outside is provided with air extractor.
Preferably, thermal insulation layer is enclosed on the outside of the heating tube.
The present invention have it is following the utility model has the advantages that
The high-precision Industrial Boiler Temperature-controlled appliance is converted to water by the thermal energy for generating coal dust firing in boiler
After the conversion ratio of the interior energy of steam determines, warm of the coal dust before kindling is put into outside furnace and is carried out, warm is avoided to inhale
The heat in furnace is received, therefore the thermal energy that coal dust firing generates in furnace is by (extraneous environment is identical, heat in the ratio according to conversion ratio
The natural loss of amount is constant) be converted to vapor it is interior can, therefore the raising of steam temperature depend on coal dust full combustion production
Raw thermal energy increases, then by the supply amount of control coal dust or oxygen, i.e., the amount for the thermal energy that controllable coal dust firing generates,
And then it realizes and the high-precision of boiler temperature is regulated and controled.
Detailed description of the invention
Fig. 1 is the schematic diagram of each device connection relationship of the present invention；
Fig. 2 is the schematic diagram of internal structure of shell in the present invention；
Fig. 3 is one of the connection relationship diagram of admission line in another embodiment；
Fig. 4 is two of the connection relationship diagram of admission line in another embodiment.
In figure: 1, flour mill；2, feed hopper；3, feed pipe；4, shell；5, driving motor；6, screw rod；7, discharge port；
8, admission line；9, gas flowmeter；10, poweder flowmeter；11, heating tube；12, air extractor；13, heat exchanger tube；14, first
Escape pipe；15, the second escape pipe；16, third escape pipe；17, control valve.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
A kind of high-precision Industrial Boiler Temperature-controlled appliance that embodiment according to the present invention provides referring to FIG. 1-2,
Including flour mill 1 (brand: sensible, model: 1510, the granularity of finished product can be adjusted arbitrarily within the scope of 100-1250 mesh), milling
The top of machine 1 is connect with feed hopper 2, and flour mill 1 is connected to by feed pipe 3 with the shell 4 of cavity structure, the top of shell 4
It is provided with driving motor 5 (brand: three open up, model: GW90W, peak torque 410N/M), the inside of shell 4 is equipped with screw rod 6,
The top of screw rod 6 passes through the top surface of shell 4 and is fixedly connected with the shaft for being located at 5 lower end of driving motor, the inside bottom of shell 4
The bottom end of discharge port 7 equipped with funnel-shaped structure, shell 4 is connected to admission line 8, admission line 8 and is located at the right side of shell 4
Corresponding position is provided with gas flowmeter 9, and (title: turbine flowmeter, scale of precision ± 0.5%R carry lithium battery power supply, adopt
Transmitted with two-wire system signal, degree of protection IP65), the admission line 8 and corresponding position in left side for being located at shell 4 is provided with powder
Flowmeter 10 (brand: Hua Delin, model: HDLDG-06, working principle: measuring principle is to be based on Faraday's electromagnetic induction law,
The non-magnetic alloy short tube of the measurement pipe insulation liner material of flowmeter, electrode are fixed on measurement pipe along caliber direction break-through tube wall
On, electrode is substantially flush with lining inner surface, magnet exciting coil by both party wave impulse excitation when, will be vertical with measurement pipe axis
Direction on the magnetic density that generates be B operating fields.At this point, if fluid flows through measurement pipe.By cutting magnetic line with
Electromotive force E is induced, magnetic density B is inversely proportional to, how much magnetic density is just inversely proportional with the powder for flowing through measurement pipe at this time,
And it directlys proportional to internal diameter d to the product of mean flow rate v.Electromotive force E (flow signal) detected by electrode and pass through cable send to turn
Parallel operation.Converter can show fluid flow, and can export pulse for after flow signal enhanced processing, the signals such as analog current),
The left end of admission line 8 is connected to the inside of boiler, and the part between admission line 8 and boiler is provided with heating tube 11.
Wherein, admission line 8 uses heat resistant and wear resistant material.
Wherein, admission line 8 and boiler outside is provided with air extractor 12.
Wherein, the outside of heating tube 11 is enclosed with thermal insulation layer.
Working principle: in general, burning of the coal dust in burner hearth is broadly divided into three phases:
1) preparation stage before catching fire: need to be preheating to the temperature of ignition point before coal powder ignition, this is an endothermic phase；
2) combustion phases: when coal dust temperature reaches ignition point, and coal powder density is suitable, initial burning burning, and it is right
Coke directly heats, therefore coke also burns at high temperature, this stage is the very exothermic stage；
3) the after-flame stage: uncombusted a small amount of carbon burns away until after-flame, this stage is also exothermic phase.
It follows that other stages are heat release other than preparation stage of the coal dust before kindling is endothermic phase, and it is single
The heat that position coal dust completely burned generates is constant, is carried out if the process for absorbing heat before coal powder ignition is put into outside furnace,
It is it is believed that and the heat generated that burns is converted to that so using how many coal dust, completely burned, which generates how many heat, in furnace
The conversion ratio of the interior energy of vapor can be determined according to boiler, therefore, in order to avoid ascending to heaven occurs in the temperature of vapor
Abnormal conditions, as long as the heat that control coal dust full combustion generates can be realized.Coal cinder is worn into properly by flour mill 1 first
The coal dust of partial size, then coal dust is transported to inside shell 4 by feed pipe 3, due to the effect of air extractor 12, so that air inlet
It is in negative pressure state at the right end and discharge port 7 of pipeline 8, to avoid coal dust passive type from sucking, causes pulverized coal consumption can not
Control, therefore feed is squeezed using screw rod 6, the cavity inside shell 4 is blocked during pressurization, avoids coal dust quilt
Dynamic sucking is realized and is actively fed, while gas flowmeter 9 is used to measure the infeed amount of oxygen, avoids oxygen supply is very few from causing
Not exclusively, the infeed amount of the further precise measurement coal dust of poweder flowmeter 10 guarantees that the infeed amount of coal dust is in optimal for reaction, when
When coal dust reaches 11 position of heating tube, heating tube 11 carries out preceding preheating of catching fire to coal dust, is blown into furnace finally by air extractor 12
It can directly burn when body, the accurate control of vapor (steam) temperature can be realized by the amount of feeding of control coal dust and oxygen.
Referring to Fig. 3, in another embodiment, for saving heat energy, while realizing the cooling to boiler discharge exhaust gas, also
It can be arranged with a heat exchanger tube 13 on admission line 8 between poweder flowmeter 10 and air extractor 12, be used from boiler
It is connected in the first escape pipe 14 of discharge high-temp waste gas with the left end of heat exchanger tube 13, the right end of the second escape pipe 15 and heat exchanger tube 13
Connection, high-temperature gas transfers heat to during flowing through heat exchanger tube 13 inside admission line 8, for the preheating of coal dust,
Realize the recycling of thermal energy.
Referring to Fig. 4, in another embodiment, the utilization rate of the high-temperature gas of boiler discharge can also be further increased,
Third escape pipe 16 is provided on first escape pipe 14, third escape pipe 16 is directly connected to admission line 8, and is connected to and is located at powder
Between later and decadent stage of a school of thought meter 10 and air extractor 12, control valve 17 is additionally provided on third escape pipe 16, for controlling third escape pipe 16
Circulation so that part high-temperature gas is directly entered inside admission line 8, under conditions of guaranteeing that oxygen supply is sufficient, coal
The pre-heat effect of powder is more preferable.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. a kind of high-precision Industrial Boiler Temperature-controlled appliance, including flour mill, it is characterised in that: the top of the flour mill
It is connect with feed hopper, the flour mill is connected to by feed pipe with the shell of cavity structure, is provided with above the shell
Driving motor, the inside of the shell are equipped with screw rod, and the top of the screw rod passes through the top surface of shell and drives electricity with being located at
The shaft of machine lower end is fixedly connected, and the inside bottom of the shell is equipped with the discharge port of funnel-shaped structure, the bottom end of the shell
Be connected to admission line, the admission line and be located at shell on the right side of corresponding position be provided with gas flowmeter, the air inlet
The pipeline and corresponding position in left side for being located at shell is provided with poweder flowmeter, the left end of the admission line and the inside of boiler
Connection, the part between the admission line and boiler is provided with heating tube.
2. a kind of high-precision Industrial Boiler Temperature-controlled appliance according to claim 1, it is characterised in that: the air inlet
Pipeline uses heat resistant and wear resistant material.
3. a kind of high-precision Industrial Boiler Temperature-controlled appliance according to claim 1, it is characterised in that: the air inlet
Pipeline and boiler outside is provided with air extractor.
4. a kind of high-precision Industrial Boiler Temperature-controlled appliance according to claim 1, it is characterised in that: the heating
Thermal insulation layer is enclosed on the outside of pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910488264.9A CN110207146A (en) | 2019-06-05 | 2019-06-05 | A kind of high-precision Industrial Boiler Temperature-controlled appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910488264.9A CN110207146A (en) | 2019-06-05 | 2019-06-05 | A kind of high-precision Industrial Boiler Temperature-controlled appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110207146A true CN110207146A (en) | 2019-09-06 |
Family
ID=67791164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910488264.9A Withdrawn CN110207146A (en) | 2019-06-05 | 2019-06-05 | A kind of high-precision Industrial Boiler Temperature-controlled appliance |
Country Status (1)
| Country | Link |
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| CN (1) | CN110207146A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2480059Y (en) * | 2001-04-13 | 2002-03-06 | 任炳志 | Positive/negative pressure conveying type low power consumption powder mill |
| CN201078698Y (en) * | 2007-08-24 | 2008-06-25 | 邰钦召 | Industry furnace coal dust firing system apparatus |
| CN201443753U (en) * | 2009-08-28 | 2010-04-28 | 宿长恕 | Boiler system for burning coal powder |
| CN102032590A (en) * | 2010-12-31 | 2011-04-27 | 北京华电天仁电力控制技术有限公司 | Boiler combustion optimizing control system and optimizing control method based on accurate measurement system |
| CN201823583U (en) * | 2010-09-26 | 2011-05-11 | 安徽晋煤中能化工股份有限公司 | Coal mill dehumidification device |
| CN103075741A (en) * | 2013-01-31 | 2013-05-01 | 佛山市沛沣科技有限公司 | Negative pressure delivery powder combustion system |
| JP2014074570A (en) * | 2012-10-05 | 2014-04-24 | Nippon Steel & Sumitomo Metal | Pulverization plant exhaust gas control device, pulverization plant exhaust gas controlling method and computer program |
| CN206746693U (en) * | 2017-05-16 | 2017-12-15 | 湖南洛普节能技术服务有限公司 | A kind of coordination control conveying device of coal-grinding machine-made egg-shaped or honey-comb coal briquets amount |
-
2019
- 2019-06-05 CN CN201910488264.9A patent/CN110207146A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2480059Y (en) * | 2001-04-13 | 2002-03-06 | 任炳志 | Positive/negative pressure conveying type low power consumption powder mill |
| CN201078698Y (en) * | 2007-08-24 | 2008-06-25 | 邰钦召 | Industry furnace coal dust firing system apparatus |
| CN201443753U (en) * | 2009-08-28 | 2010-04-28 | 宿长恕 | Boiler system for burning coal powder |
| CN201823583U (en) * | 2010-09-26 | 2011-05-11 | 安徽晋煤中能化工股份有限公司 | Coal mill dehumidification device |
| CN102032590A (en) * | 2010-12-31 | 2011-04-27 | 北京华电天仁电力控制技术有限公司 | Boiler combustion optimizing control system and optimizing control method based on accurate measurement system |
| JP2014074570A (en) * | 2012-10-05 | 2014-04-24 | Nippon Steel & Sumitomo Metal | Pulverization plant exhaust gas control device, pulverization plant exhaust gas controlling method and computer program |
| CN103075741A (en) * | 2013-01-31 | 2013-05-01 | 佛山市沛沣科技有限公司 | Negative pressure delivery powder combustion system |
| CN206746693U (en) * | 2017-05-16 | 2017-12-15 | 湖南洛普节能技术服务有限公司 | A kind of coordination control conveying device of coal-grinding machine-made egg-shaped or honey-comb coal briquets amount |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190906 |
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| WW01 | Invention patent application withdrawn after publication |