CN202993189U - Efficient combustion device of pulverized coal boiler - Google Patents

Efficient combustion device of pulverized coal boiler Download PDF

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Publication number
CN202993189U
CN202993189U CN 201220618351 CN201220618351U CN202993189U CN 202993189 U CN202993189 U CN 202993189U CN 201220618351 CN201220618351 CN 201220618351 CN 201220618351 U CN201220618351 U CN 201220618351U CN 202993189 U CN202993189 U CN 202993189U
Authority
CN
China
Prior art keywords
blade assembly
secondary air
assembly
sprayer nozzle
flame
Prior art date
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.)
Expired - Fee Related
Application number
CN 201220618351
Other languages
Chinese (zh)
Inventor
崔旭东
李圣文
孙英莉
朱玉华
董冬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Limited liability company of the Shandong energy heavy equipment manufacturing group
Original Assignee
Shandong Energy Machinery Group
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shandong Energy Machinery Group filed Critical Shandong Energy Machinery Group
Priority to CN 201220618351 priority Critical patent/CN202993189U/en
Application granted granted Critical
Publication of CN202993189U publication Critical patent/CN202993189U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses an efficient combustion device of a pulverized coal boiler. The efficient combustion device comprises a sprayer nozzle assembly, a secondary fan blade assembly, an igniting device, a casing tube and an assisting device. The igniting device is arranged on the lateral surface of the sprayer nozzle assembly and arranged at the center of the secondary fan blade assembly; the secondary fan blade assembly is arranged in the casing tube; the length of the sprayer nozzle of the sprayer nozzle assembly is 2000-2200cm, and a hood is arranged in front of the sprayer nozzle assembly to increase backflow back flushing; and 18 spiral blade assemblies which can swing flexibly are arranged on the secondary fan blade assembly, and the quantity and angle of secondary air can be adjusted through swinging of the spiral blade assemblies. Secondary air can obliquely enter along the tangential direction through blades and advances spirally along the blade direction, so that the rotating effect of outlet air can be strengthened. The quantity and rotational flow angle of blade groups can be set according to requirements, so that flame entering a pre-combustion chamber can be rotational flame, the rotational flame can be effectively lengthened, and combustion can be full and even.

Description

The pulverized-coal fired boiler high efficient combustion device
Technical field
The utility model relates to a kind of burner, particularly about a kind of coal powder burner that is suitable for using in small and medium-sized industrial coal powder boilers.
Background technology
Existing middle-size and small-size industry coal-boiler all adopts traditional burner as grate firing boiler, reciprocating boiler, chain furnace etc., and these all traditional burner be not suitable for combusting coal fines.Be used at present the coal powder burner of station boiler, its volume structure generally is only applicable to the huge station boiler of burner hearth and uses, and can not be directly used in small and medium-sized industrial coal powder boilers.Therefore, the coal powder burner of a kind of suitable small and medium-sized industrial coal powder boilers use of development is very necessary.
The utility model content
The purpose of this utility model is to provide a kind of coal powder burner of suitable small and medium-sized industrial coal powder boilers use.
The technical scheme that the utility model is taked is:
A kind of pulverized-coal fired boiler high efficient combustion device, it comprises nozzle component, Secondary Air blade assembly, igniter, cover cylinder and servicing unit; It is characterized in that:
Described igniter is arranged at the side of nozzle component, and is in Secondary Air blade assembly center;
Within described Secondary Air blade assembly is arranged at the cover cylinder;
The jet pipe length of described nozzle component is 2000-2200mm, and is provided with blast cap before nozzle component, makes it increase the backflow blowback.
Described Secondary Air blade assembly is provided with 18 helical blade assemblies that swing flexibly, regulates by the swing of helical blade assembly air quantity and the angle that Secondary Air enters.
When the utility model is installed, jet pipe is connected to the coal dust carrier pipe with air pressure, the Secondary Air blade assembly is connected to pressure air or blower fan, and burner outer cover of the present utility model and cover cylinder are inserted together and be connected on the precombustion chamber of Horizontal industrial coal dust boiler device.
When the utility model uses, at first start gas (oil) pump, with the nozzle ejection of fuel oil by gas (oil) pipe, and lighted by ignitor.By after being lighted for 10 seconds, open a pressure fan and drive coal dust and sprayed by jet pipe, and the combustion gas of having been burnt lights, open simultaneously Secondary Air and promote coal dust firing.Lighted and after 10 seconds, closed air pump with the fuel oil cofiring at coal dust, being cut off combustion gas, fully by coal dust firing.Can change the air quantity ratio of wind, Secondary Air in the fired coal combustion process, also can change flame at the burning position of pulverized-coal fired boiler precombustion chamber, make the position of flame combustion fully adjustable.The flame of coal dust firing can spray into the flame rotation depths of boiler precombustion chamber under the promotion of a wind that rotates into, Secondary Air, reach the purpose of rotation, steady combustion.
Because coal dust enters precombustion chamber by nozzle component, be added with a blast cap before its jet pipe, make coal dust knock blast cap in the blast cap exit and rebound, then be blown into the precombustion chamber surrounding by the Secondary Air by blade and evenly spray, make the ejection coal dust more even.
Enter because Secondary Air prolongs tangential tilt by vane group, prolong direction blade and advance in the shape of a spiral, strengthened the rotate effect of air-out.Vane group is comprised of 18 helical blades, and its magnitude setting and eddy flow angle can arrange according to demand, the flame that enters the boiler precombustion chamber is become revolve flame, and effectively elongate the length of revolving flame, makes burning more fully, evenly.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the blade assembly schematic diagram;
Fig. 3 is the nozzle component schematic diagram.
Marginal data, 1-covers cylinder, 2-Secondary Air blade assembly, 3-igniter, 4-nozzle component, 5-precombustion chamber, 6-blast cap, 7-helical blade, 8-blast cap head, 9-blast cap pipe.
The specific embodiment
As shown in Figure 1, a kind of pulverized-coal fired boiler high efficient combustion device, it comprises nozzle component 4, Secondary Air blade assembly 2, igniter 3, exterior cover pipeline 1 and servicing unit; Wherein:
Described igniter 3 is arranged at the side of nozzle component 4, and is in Secondary Air blade assembly 2 centers;
Within described Secondary Air blade assembly 2 is arranged at exterior cover pipeline 1;
The jet pipe length of described nozzle component 4 is 2000-2200mm, and is provided with blast cap 6 before nozzle component 4, makes it increase the backflow blowback.The structure of blast cap 6 as shown in Figure 3, it is that a blast cap head 8 is installed on blast cap pipe 9, the section configuration of blast cap head 8 is that a conical surface is arranged.
Described Secondary Air blade assembly 2 as shown in Figure 2, it is provided with 18 helical blades 7, and helical blade 7 can swing flexibly, air quantity and angle that its adjustable second wind is entered.
When the utility model is installed, nozzle component 4 is connected to the coal dust carrier pipe with air pressure, Secondary Air blade assembly 2 is connected to pressure air or blower fan, and burner outer cover of the present utility model and cover cylinder 1 are inserted together and be connected on the precombustion chamber of Horizontal industrial coal dust boiler device.

Claims (1)

1. pulverized-coal fired boiler high efficient combustion device, it comprises nozzle component, Secondary Air blade assembly, igniter, cover cylinder and servicing unit; It is characterized in that: described igniter is arranged at the side of nozzle component, and is in Secondary Air blade assembly center; Within described Secondary Air blade assembly is arranged at the cover cylinder; The jet pipe length of described nozzle component is 2000-2200mm, and is provided with blast cap before nozzle component, makes it increase the backflow blowback; Described Secondary Air blade assembly is provided with 18 helical blade assemblies that swing flexibly, regulates by the swing of helical blade assembly air quantity and the angle that Secondary Air enters.
CN 201220618351 2012-11-21 2012-11-21 Efficient combustion device of pulverized coal boiler Expired - Fee Related CN202993189U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220618351 CN202993189U (en) 2012-11-21 2012-11-21 Efficient combustion device of pulverized coal boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220618351 CN202993189U (en) 2012-11-21 2012-11-21 Efficient combustion device of pulverized coal boiler

Publications (1)

Publication Number Publication Date
CN202993189U true CN202993189U (en) 2013-06-12

Family

ID=48564366

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220618351 Expired - Fee Related CN202993189U (en) 2012-11-21 2012-11-21 Efficient combustion device of pulverized coal boiler

Country Status (1)

Country Link
CN (1) CN202993189U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106196042A (en) * 2016-08-29 2016-12-07 煤科院节能技术有限公司 A kind of strong swirl jet burner
CN114110582A (en) * 2022-01-25 2022-03-01 烟台市大昌燃气器具有限责任公司 Combustion-supporting combustor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106196042A (en) * 2016-08-29 2016-12-07 煤科院节能技术有限公司 A kind of strong swirl jet burner
CN114110582A (en) * 2022-01-25 2022-03-01 烟台市大昌燃气器具有限责任公司 Combustion-supporting combustor

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee

Owner name: SHANDONG ENERGY HEAVY EQUIPMENT MANUFACTURING GROU

Free format text: FORMER NAME: SHANDONG ENERGY MACHINERY GROUP CO., LTD.

CP03 Change of name, title or address

Address after: 271200 Shandong city of Xintai province Tai'an City Xindong town new road three

Patentee after: Limited liability company of the Shandong energy heavy equipment manufacturing group

Address before: 271200 Shandong city of Tai'an province Xintai Xinwen road two new Xinwen Mining Group Shandong energy Machinery Group Co. Ltd.

Patentee before: Shandong Energy Machinery Group Co., Ltd.

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130612

Termination date: 20161121

CF01 Termination of patent right due to non-payment of annual fee