CN200949838Y

CN200949838Y - Boiler whirlwind oilless lighting start device

Info

Publication number: CN200949838Y
Application number: CN 200620012357
Authority: CN
Inventors: 王满家
Original assignee: BEIJING GUODIAN HUAYUAN CONTROL TECHNOLOGY Co Ltd
Current assignee: BEIJING GUODIAN HUAYUAN CONTROL TECHNOLOGY Co Ltd
Priority date: 2006-04-14
Filing date: 2006-04-14
Publication date: 2007-09-19
Anticipated expiration: 2016-04-14

Abstract

The utility model provides a boiler whirlwind-type non-oil ignition starter, which comprises a combustor and a controller; wherein, the combustor is a reverse cylindrical shape, the wall of the cylinder is classified into an outer layer, a central layer and an inner layer; the upper cavity of the cylinder is a muffle area, and the middle and lower cavity is a whirlwind combustion area; the muffle area is provided with at least one electrical bar and the whirlwind combustion area is provided with a secondary wind nozzle and a primary wind nozzle in order in different layers; the primary wind nozzle is arranged at the upper part of the inner layer of the combustor, the secondary wind nozzle is arranged at the upper part of the outer layer of the combustor, the secondary wind is flowing along the central layer, and an outlet at the bottom of the combustor is connected to a main muffle burner of the boiler; the controller a primary wind adjusting signal, a secondary wind adjusting signal and the electric power adjusting signal according to the temperature and flame inspection signal to control the combustion temperature inside the cylinder. Adopting the pulverized coal to ignite the pulverized coal, the utility model is capable of saving a great number of crude oil; adopting the electric heating ignition method, the equipment of the utility model has simple structure, which is easy to maintain; the utility model has small starting energy and low operation cost, which is capable of realizing the non-oil ignition starting of large boilers.

Description

Boiler cyclone type non-oil ignition starter

Technical field

The utility model relates to a kind of boiler ignition start device, especially cyclone type non-oil ignition starter.

Background technology

Early stage pulverized-coal fired boiler starts operation and does not adopt oil gun to light a fire, but adopts a kind of Muffle furnace sparking mode, directly comes firing coal-dust with coal, and this kind method uses the fifties latter stage.Owing to reasons such as the continuous expansions of boiler capacity, the mode that starts boiler operatiopn with Muffle furnace was eliminated, then adopted grease gun igniting to start boiler afterwards, and this kind method is used till today always.A large-sized boiler, once igniting will fuel consumption tens tons more than, for the ignition trigger facility has but consumed the huge and non-renewable energy like this, in today of oil shortage, is worth our self-examination really.If we use for reference non-oil ignition mode in the past and carry out brand-new design, can realize the requirement that current large-sized boiler non-oil ignition starts fully, not only substantial oil can be saved, but also the required auxiliary facility of oil supply system can be saved.

Summary of the invention

The purpose of this utility model provides a kind of boiler cyclone type non-oil ignition starter, and it can realize that the large-sized boiler non-oil ignition starts.

The purpose of this utility model is achieved by the following technical solution.Design a kind of boiler cyclone type non-oil ignition starter, it comprises: burner and controller; Described burner is the handstand cylindrical shape, and barrel is divided into skin, interlayer and internal layer successively; The cylindrical shell epicoele is that horse is not distinguished, in, cavity of resorption is the cyclone firing district; Be provided with an above electrical bar in horse is not distinguished, the cyclone firing district from top to bottom successively layering be provided with overfire air jet, a wind nozzle; The internal layer top of described burner is provided with the wind nozzle one time, and outer top is provided with overfire air jet, and secondary wind flows along interlayer, and the outlet at bottom of burner connects boiler main jet burner; Described controller is according to temperature detection and the control of flame detection signal wind conditioning signal, secondary wind conditioning signal and an electrical power conditioning signal, with the ignition temperature of control inner barrel.

The boiler cyclone type non-oil ignition starter of utility model has the following advantages compared with prior art:

1. this device adopts the coal dust firing coal-dust, can save substantial oil.For the unit of a 600MW, the igniting oil consumption is up to 9000 tons, so fuel-economizing value is considerable during the test run.

This device with horse not the theory of combustion and cyclone firing principle combine, use the electrical heating ignition method, the basic fundamental maturation, device structure is simple, safeguards easily.Light the about 20KW/h of coal dust power consumption per ton, it is little to start energy, and operating cost is low, can need not drop into other fuel to boiler from cold start up to main jet burner input.

3. this device makes Power Plant Fuel management unification, need not to set up auxiliary equipment such as oil depot, oil pipeline, has saved capital expenditure, has also reduced power plant's administrative expenses.

4. this device can manufacture the standardized product of different thermal powers, for the different model boiler, can supportingly use.

5. this device is an external, as long as this device is introduced in the wind and the secondary air channel road of former boiler, and the equipment simple installation, little to on-the-spot retrofit work amount, so apply easily.

6. this device can be made the usefulness of low-load combustion-stabilizing, can save the low-load combustion-stabilizing input.

Description of drawings

Fig. 1 is the structural representation of boiler cyclone type non-oil ignition starter;

Fig. 2 is the profile of burner in the cyclone firing district.

The specific embodiment

Below in conjunction with drawings and Examples, further describe structure of the present utility model and operation principle.

With reference to Fig. 1, boiler cyclone type non-oil ignition starter of the present utility model comprises: burner 1 and controller 2.Described burner 1 is the handstand cylindrical shape, adopts fire-resistant steel to be welded; Barrel is divided into skin 3, interlayer 4 and internal layer 5 successively, and outer 3 is heat-insulation layers, scribbles insulation material, to prevent radiation loss; The centre is an interlayer 4; Internal layer 5 is flame retardant coatings, scribbles refractory material, with high temperature resistance.The cylindrical shell epicoele is that horse not distinguishes 6, in, cavity of resorption is cyclone firing district 7.Horse is not distinguished and is provided with an above electrical bar 8 in 6, as figure 2 electrical bars can be set, and horse is not distinguished 6 space and is heated to more than the ignition temperature of coal about 1000 ℃.Cyclone firing district 7 from top to bottom successively layering be provided with overfire air jet 9, a wind nozzle 10; Internal layer 5 tops of burner 1 are provided with wind nozzle 11 one time, and outer top is provided with overfire air jet 12, and preferably nozzle is arranged on

top

13,14 as shown in the figure; Secondary wind passes through from interlayer 4, again in tangential mode, sprays into cyclone firing district 7 from a plurality of nozzles 9, and secondary wind has been brought into play cooling metal sheets and strengthened the effect of burning.The outlet at bottom 15 of burner 1 connects boiler main jet burner 16.Described controller 2 is according to temperature detection and the control of flame detection signal wind conditioning signal 24, secondary wind conditioning signal 25 and an electrical power conditioning signal 26, with the ignition temperature of control inner barrel.Controller 2 can not be distinguished 6 from horse and extract this district's temperature detection signal 18 and

flame detection signal

19,7 extract this district's temperature detection signal 20 and flame detection signal 21 from the cyclone firing district, from interlayer 4, extract secondary air temperature degree detection signal 22, extract outlet cigarette temperature detection signal 23 from outlet at bottom 15.

In the such scheme, cyclone firing district 7 is provided with 1-8 floor overfire air jet 9, wind nozzles 10 of 1-8 layer such as A, B, C from top to bottom successively.

In the such scheme, overfire air jet 9 and a wind nozzle 10 in the cyclone firing district 7, both are arranged alternately.

The overfire air jet 9 in cyclone firing district 7 radially is provided with, and one time wind nozzle 10 tangentially is provided with, and tangentially rotates air intake as shown in Figure 2.

With reference to Fig. 2, every layer of overfire air jet 9 is 2-8, and every layer of wind nozzle 10 is 2-8.

Operation principle of the present utility model is: have a wind of coal dust, sub-fraction wherein axially sprays into a Nei Mafu district 6 from top jet nozzle 11, and most of middle and lower part from cylindrical shell tangentially sprays into cyclone firing district 7.The coal dust that axially enters, at first not distinguishing 6 horse is ignited by high temperature, flow to the A floor in cyclone firing district 7, the ignite coal dust of A layer, the A layer that goes down the successively B layer that ignites, the B layer C layer that ignites, the rest may be inferred to final layer, take the positive feedback mode that ignites step by step, make that a single spark can start a prairie fire, reach energy with minimum maximum coal dust that ignites.In order to control the burning of starter, need to detect temperature and the flame that horse is not distinguished, the temperature in cyclone firing district and flame, secondary air temperature, exhaust gas temperature, barrel temperature, with these detection signals, send into controller, controller sends conditioning signal, goes regulating shaft to advancing the allocation proportion that coal and each layer of ABC tangentially advance coal, regulate the power of secondary air flow and electrical bar, ignition temperature in the control cylindrical shell makes coal dust obtain smooth combustion in cylindrical shell, prevents that coking from guaranteeing flameholding and security of operation, whole combustion process is being carried out under the control automatically, spray temperature at last and reach thermal-flame more than 1000 ℃, light main jet burner 16, thereby reach the purpose that starts boiler operatiopn.When this burner moves at boiler at low load, also can put into operation, to guarantee low-load combustion-stabilizing.

The basic principle that horse is not burnt is to make fuel a limited high-temperature space burning, and the principle of cyclone firing is to make fuel make rotary combustion at a circular space, produces strong disturbance and improves combustion reaction intensity.The utility model combines the two theory of combustion, just can easily coal dust be lighted, and forms the power generator of a smooth combustion, so the boiler main burner that ignites go into the stove coal dust.

Claims

1, a kind of boiler cyclone type non-oil ignition starter is characterized in that it comprises: burner and controller; Described burner is the handstand cylindrical shape, and barrel is divided into skin, interlayer and internal layer successively; The cylindrical shell epicoele is that horse is not distinguished, in, cavity of resorption is the cyclone firing district; Be provided with an above electrical bar in horse is not distinguished, the cyclone firing district from top to bottom successively layering be provided with overfire air jet, a wind nozzle; The internal layer top of described burner is provided with the wind nozzle one time, and outer top is provided with overfire air jet, and secondary wind flows along interlayer, and the outlet at bottom of burner connects boiler main jet burner; Described controller is according to temperature detection and the control of flame detection signal wind conditioning signal, secondary wind conditioning signal and an electrical power conditioning signal.

2, boiler cyclone type non-oil ignition starter according to claim 1 is characterized in that the skin of described barrel is a heat-insulation layer, and internal layer is a flame retardant coating.

3, boiler cyclone type non-oil ignition starter according to claim 1 is characterized in that, described cyclone firing district is provided with 1-8 floor overfire air jet, wind nozzle of 1-8 floor from top to bottom successively.

4, boiler cyclone type non-oil ignition starter according to claim 3 is characterized in that, overfire air jet and a wind nozzle are arranged alternately in the described cyclone firing district.

5, according to claim 1,3 or 4 described boiler cyclone type non-oil ignition starters, it is characterized in that the overfire air jet in described cyclone firing district radially is provided with, one time the wind nozzle tangentially is provided with.

6, boiler cyclone type non-oil ignition starter according to claim 5 is characterized in that, every layer of overfire air jet is 2-8, and every layer of wind nozzle is 2-8.

7, according to the described boiler cyclone type of the arbitrary claim of claim 1 to 4 non-oil ignition starter, it is characterized in that, described controller is not distinguished from horse and is extracted this district's temperature detection and flame detection signal, extract this district's temperature detection and flame detection signal from the cyclone firing district, extract secondary air temperature degree detection signal from interlayer, extract outlet cigarette temperature detection signal from outlet at bottom.