CN204554806U - With centre wind sleeve and the pulverized coal channel assembly of dilatation joint - Google Patents
With centre wind sleeve and the pulverized coal channel assembly of dilatation joint Download PDFInfo
- Publication number
- CN204554806U CN204554806U CN201520257588.9U CN201520257588U CN204554806U CN 204554806 U CN204554806 U CN 204554806U CN 201520257588 U CN201520257588 U CN 201520257588U CN 204554806 U CN204554806 U CN 204554806U
- Authority
- CN
- China
- Prior art keywords
- dilatation joint
- tube
- wind
- jet pipe
- central
- 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.)
- Active
Links
Abstract
With centre wind sleeve and the pulverized coal channel assembly of dilatation joint, it relates to a kind of coal-fired boiler in power plant low NO centre wind sleeve and pulverized coal channel assembly.To solve centre wind sleeve and the pulverized coal channel assembly of coal burner in prior art, inside is not wear-resisting, one, Secondary Air mixing too early and air duct distal portion because of inequality and the localized hyperthermia of being heated, cause the problem that air duct distal portion gross distortion damages, entrance tube connector, taper reducer pipe, pulverized coal channel tube connector and coal dust jet pipe are communicated with, central air hose is fixed in pulverized coal channel tube connector, central wind-tube is communicated with central air hose, coal dust jet pipe is high temperature resistant stainless steel jet pipe, central wind-tube is high temperature resistant stainless steel air duct, pulverized coal channel tube connector is provided with centre wind inlet tube, centre wind inlet tube is communicated with central air hose, central air hose lateral wall is connected with wear resistant ceramic chip.The utility model is used for coal dust mixed airflow and mixes with secondary combustion-supporting wind.
Description
Technical field
The utility model relates to a kind of coal-fired boiler in power plant low NO centre wind sleeve and pulverized coal channel assembly.
Background technology
Coal dust efficient burning technology and low-NO_x combustion technology are two kinds of technology of contradiction each other.Reduce NO_x formation and be that the temperature in control combustion region can not be too high with discharge at all, but low-temperature burning affects again the combustion rate of coal dust, it is object that the application coordinating these two technology makes it to reach comprehensive optimum efficiency, in fact just requires to be controlled the overall process of coal dust firing.The stability of coal powder ignition can either be ensured, have again lower ignition temperature have ensure coal dust after-flame burning time sufficiently long and at a certain temperature simultaneously.
Centre wind sleeve and pulverized coal channel assembly are the coal burner most critical positions of coal-fired boiler in power plant, are related to the problem of the aspects such as the safe operation of system, heat utilization efficiency and environmental protection.Current burner all reaches production engineering specifications in efficiency of combustion, steady combustion, low emission etc.Shortcoming is exactly that burner pulverized coal channel inside is not wear-resisting, and there is recirculating zone at burner outlet place, and the starting point of recirculating zone is inner in recirculating zone, and the high-temperature flue gas that recirculating zone is entrainmented easily makes burner nozzle slagging scorification burn out distortion.Primary and secondary air mixing in advance, is unfavorable for the generation suppressing nitrogen oxide.Centre wind sleeve and pulverized coal channel element end are stainless steel cylinders, because fire box temperature is up to 1300 DEG C, contact with burner hearth stainless steel circle air duct due to from high-temperature region apart from different, the axial temperature of stainless steel air duct is also different, lower from the spot temperature away from burner hearth, from the position meeting hot-spot close to burner hearth, make the bulk temperature of air duct uneven, therefore, thermal expansion deformation differs greatly.When particularly shutting down, due to cavity temperature and pressure higher, wind overpressure is lower; flame can return string in pulverized coal channel assembly airduct; localized hyperthermia makes the serious thermal deformation of air duct distal portion damage, and causes the whole service life of burner to shorten, and then affects the use of burner.
Utility model content
The purpose of this utility model is to provide a kind of centre wind sleeve with dilatation joint and pulverized coal channel assembly, to solve centre wind sleeve and the pulverized coal channel assembly of coal burner in prior art, inside is not wear-resisting, primary and secondary air mixing too early and air duct distal portion because of inequality and the localized hyperthermia of being heated, cause the problem that air duct distal portion gross distortion damages.
The utility model is the technical scheme taked that solves the problem: the described centre wind sleeve with dilatation joint of the present utility model and pulverized coal channel assembly comprise coal dust jet pipe, central wind-tube, pulverized coal channel tube connector, centre wind inlet tube, central air hose, wear-resistant ceramic cone, taper reducer pipe, entrance tube connector, fan shape baffle and some pieces of wear resistant ceramic chips, entrance tube connector, taper reducer pipe, pulverized coal channel tube connector and coal dust jet pipe are communicated with affixed successively, central air hose is fixed in pulverized coal channel tube connector, central wind-tube is fixed in coal dust jet pipe, central wind-tube and coal dust jet pipe are coaxially arranged, the air intake of central wind-tube is communicated with the outlet air end of central air hose, the outlet air end of central wind-tube is arranged at inside the outlet air end of coal dust jet pipe, coal dust jet pipe is heat resistant and wear resistant cast steel jet pipe, central wind-tube is high temperature resistant stainless steel air duct, pulverized coal channel tube connector lateral wall is provided with centre wind inlet tube, centre wind inlet tube is communicated with central air hose, central air hose lateral wall is connected with wear resistant ceramic chip, entrance tube connector inwall, taper reducer pipe inwall and pulverized coal channel tube connector inwall are all connected with wear resistant ceramic chip, the outer end of entrance tube connector offers air inlet, fan shape baffle is provided with in entrance tube connector, fan shape baffle is fixed in the air inlet of entrance tube connector and correspondingly with centre wind inlet tube arranges, fan shape baffle surface is connected with wear resistant ceramic chip, the air intake outer face of central air hose is connected with wear-resistant ceramic cone, wear-resistant ceramic cone is arranged in taper reducer pipe,
The outlet air end of coal dust jet pipe offers several long dilatation joint gap and several short dilatation joint gap, and the long dilatation joint gap of coal dust jet pipe and the short dilatation joint gap of coal dust jet pipe replace the circumference uniform distribution along the outlet air end of coal dust jet pipe successively,
The outlet air end inwall of coal dust jet pipe is connected with some block length dilatation joint gap cover plates and some pieces short dilatation joint gap cover plates, the long dilatation joint gap cover plate of coal dust jet pipe and the long dilatation joint gap one_to_one corresponding of coal dust jet pipe are arranged, the short dilatation joint gap cover plate of coal dust jet pipe and the short dilatation joint gap one_to_one corresponding of coal dust jet pipe are arranged
The outlet air end of central wind-tube offers several long dilatation joint gap and several short dilatation joint gap, the long dilatation joint gap of central wind-tube and the short dilatation joint gap of central wind-tube replace the circumference uniform distribution of the centrally outlet air end of air duct successively, the outlet air end inwall of central wind-tube is connected with some block length dilatation joint gap cover plates and some pieces short dilatation joint gap cover plates, the long dilatation joint gap cover plate of central wind-tube and the long dilatation joint gap one_to_one corresponding of central wind-tube are arranged, and the short dilatation joint gap cover plate of central wind-tube and the short dilatation joint gap one_to_one corresponding of central wind-tube are arranged.
The utility model compared with prior art has following beneficial effect:
1, wear resistant ceramic chip 20 has that hardness is high, anti-wear performance good and the premium properties such as resistance to chemical attack.
2, coal dust jet pipe 01 is high temperature resistant stainless steel jet pipe, and central wind-tube 02 is high temperature resistant stainless steel air duct, overcomes when inserted potsherd runs into anxious thermal condition under burner high temperature district running status and broken shortcoming more easily occurs.
3, long dilatation joint gap cover plate 33 and short dilatation joint gap cover plate 34, coal dust jet pipe 01 and the central wind-tube 02 of offsetting close burner hearth cross thermal expansion production extrusion stress, prevent coal dust jet pipe 01 and central wind-tube 02 overheating deforming.
4, make coal dust mixed airflow and secondary combustion-supporting wind reach the outer dense interior light circumferential separating effect of coal dust gaseous mixture inside the outlet air end that the outlet air end of central wind-tube 02 is arranged at coal dust jet pipe 01, and prevent the Secondary Air from mixing too early, effectively suppress the generation of nitrogen oxide.
5, fan shape baffle 18 is fixed in the air inlet of entrance tube connector 16 and correspondingly with centre wind inlet tube 07 arranges, and the breeze airflow in centre wind inlet tube 07 front shelters from by fan shape baffle 18, prevents breeze airflow to centre wind inlet tube 07 erosive wear.
6, taper reducer pipe 15 both saved space, and corresponding manufacture raw material, ensured that coal dust mixed airflow passes through smoothly simultaneously.
After using assembly of the present utility model, the whole service life of burner extends 30% relatively.
Accompanying drawing illustrates,
Fig. 1 is assembling sectional plan view of the present utility model, Fig. 2 is the left view of Fig. 1, Fig. 3 is the sectional plan view of central wind-tube 02, Fig. 4 is the sectional plan view of coal dust jet pipe 01, Fig. 5 is the right view of Fig. 4, Fig. 6 is the P place enlarged drawing of Fig. 5, and Fig. 7 is the assembling plan view of central air hose 09, central wind-tube 02, centre wind inlet tube 07 and ship type anti-return extension board group 71, and Fig. 8 is the front view of Fig. 7.
Detailed description of the invention
Detailed description of the invention one: composition graphs 1 to Fig. 8 illustrates, the described centre wind sleeve with dilatation joint of present embodiment and pulverized coal channel assembly comprise coal dust jet pipe 01, central wind-tube 02, pulverized coal channel tube connector 06, centre wind inlet tube 07, central air hose 09, wear-resistant ceramic cone 12, taper reducer pipe 15, entrance tube connector 16, fan shape baffle 18 and some pieces of wear resistant ceramic chips 20, entrance tube connector 16, taper reducer pipe 15, pulverized coal channel tube connector 06 and coal dust jet pipe 01 are communicated with affixed successively, central air hose 09 is fixed in pulverized coal channel tube connector 06, central wind-tube 02 is fixed in coal dust jet pipe 01, central wind-tube 02 and coal dust jet pipe 01 are coaxially arranged, the air intake of central wind-tube 02 is communicated with the outlet air end of central air hose 09, the outlet air end of central wind-tube 02 is arranged at inside the outlet air end of coal dust jet pipe 01, coal dust jet pipe 01 is heat resistant and wear resistant cast steel jet pipe, central wind-tube 02 is high temperature resistant stainless steel air duct, pulverized coal channel tube connector 06 lateral wall is provided with centre wind inlet tube 07, centre wind inlet tube 07 is communicated with central air hose 09, central air hose 09 lateral wall is connected with wear resistant ceramic chip 20, entrance tube connector 16 inwall, taper reducer pipe 15 inwall and pulverized coal channel tube connector 06 inwall are all connected with wear resistant ceramic chip 20, the outer end of entrance tube connector 16 offers air inlet, fan shape baffle 18 is provided with in entrance tube connector 16, fan shape baffle 18 is fixed in the air inlet of entrance tube connector 16 and correspondingly with centre wind inlet tube 07 arranges, fan shape baffle 18 surface is connected with wear resistant ceramic chip 20, the air intake outer face of central air hose 09 is connected with wear-resistant ceramic cone 12, wear-resistant ceramic cone 12 is arranged in taper reducer pipe 15,
The outlet air end of coal dust jet pipe 01 offers several long dilatation joint gap 31 and several short dilatation joint gap 32, the long dilatation joint gap 31 of coal dust jet pipe 01 and the short dilatation joint gap 32 of coal dust jet pipe 01 are successively alternately along the circumference uniform distribution of the outlet air end of coal dust jet pipe 01
The outlet air end inwall of coal dust jet pipe 01 is connected with some block length dilatation joint gap cover plates 33 and some pieces short dilatation joint gap cover plates 34, the long dilatation joint gap cover plate 33 of coal dust jet pipe 01 is arranged with long dilatation joint gap 31 one_to_one corresponding of coal dust jet pipe 01, the short dilatation joint gap cover plate 34 of coal dust jet pipe 01 is arranged with short dilatation joint gap 32 one_to_one corresponding of coal dust jet pipe 01
The outlet air end of central wind-tube 02 offers several long dilatation joint gap 31 and several short dilatation joint gap 32, the long dilatation joint gap 31 of central wind-tube 02 replaces the circumference uniform distribution of the centrally outlet air end of air duct 02 successively with the short dilatation joint gap 32 of central wind-tube 02, the outlet air end inwall of central wind-tube 02 is connected with some block length dilatation joint gap cover plates 33 and some pieces short dilatation joint gap cover plates 34, the long dilatation joint gap cover plate 33 of central wind-tube 02 is arranged with long dilatation joint gap 31 one_to_one corresponding of central wind-tube 02, the short dilatation joint gap cover plate 34 of central wind-tube 02 is arranged with short dilatation joint gap 32 one_to_one corresponding of central wind-tube 02.
Detailed description of the invention two: composition graphs 1 to Fig. 8 illustrates, the described centre wind sleeve with dilatation joint of present embodiment and pulverized coal channel assembly also comprise outer connecting ring 05 and interior connecting ring 04, pulverized coal channel tube connector 06 outlet air end and outer connecting ring 05 are welded and fixed, outer connecting ring 05 is welded and fixed with coal dust jet pipe 01, outlet air end and the interior connecting ring 04 of central air hose 09 are welded and fixed, and interior connecting ring 04 is welded and fixed with central wind-tube 02.
In present embodiment, undocumented technical characteristic is identical with detailed description of the invention one.
Detailed description of the invention three: composition graphs 1 to Fig. 8 illustrates, the outlet air end of the centre wind inlet tube 07 of present embodiment is connected with deflector 08.
In present embodiment, undocumented technical characteristic is identical with detailed description of the invention one or two.
Detailed description of the invention four: composition graphs 1 to Fig. 8 illustrates, the described centre wind sleeve with dilatation joint of present embodiment and pulverized coal channel assembly also comprise ship type anti-return extension board group 71 and gripper shoe 19, the bottom surface of ship type anti-return extension board group 71 respectively with central air hose 09 and central wind-tube 02 Joint, the end face of ship type anti-return extension board group 71 respectively with pulverized coal channel tube connector 06 and coal dust jet pipe 01 Joint, the large end of ship type anti-return extension board group 71 and centre wind inlet tube 07 outer wall Joint, gripper shoe 19 one end and coal dust jet pipe 01 Joint, the other end of gripper shoe 19 and central wind-tube 02 Joint.
If there is no ship type anti-return extension board group 71, when coal dust intermixture high velocity air is by centre wind inlet tube 07, low-pressure area can be formed at centre wind inlet tube 07 rear, and then form eddy current, cause larger resistance, affect the overall flame rod effect of burner; Also can form backflow at nozzle, flame can produce Partial ablation to spout local for a long time, affects the service life of spout.
In present embodiment, undocumented technical characteristic is identical with detailed description of the invention three.
Detailed description of the invention five: composition graphs 1 to Fig. 8 illustrates, the described centre wind sleeve with dilatation joint of present embodiment and pulverized coal channel assembly also comprise ceramic cap 21 and nut 14, the air intake outer face of central air hose 09 is connected with centre wind pipe end closure plate 11, centre wind pipe end closure plate 11 outer surface is connected with ceramic cone fixed bar 13, through hole is offered along wear-resistant ceramic cone 12 axis, wear-resistant ceramic cone 12 is set on ceramic cone fixed bar 13 by described through hole, nut 14 and ceramic cone fixed bar 13 outer end are connected, ceramic cap 21 is fixed on nut 14.
In present embodiment, undocumented technical characteristic is identical with detailed description of the invention four.
Detailed description of the invention six: composition graphs 1 to Fig. 8 illustrates, the described centre wind sleeve with dilatation joint of present embodiment and pulverized coal channel assembly also comprise two pieces of connecting plates 10, the inwall of pulverized coal channel tube connector 06 and two pieces of connecting plate 10 Joints, two pieces of connecting plates 10 and central air hose 09 Joint, entrance tube connector 16 outer end is connected with outside adpting flange 17.
In present embodiment, undocumented technical characteristic is identical with detailed description of the invention five.
Detailed description of the invention seven: composition graphs 1 to Fig. 8 illustrates, the quantity of the long dilatation joint gap 31 of the central wind-tube 02 of present embodiment and the short dilatation joint gap 32 of central wind-tube 02 is four, the quantity of the long dilatation joint gap 31 of coal dust jet pipe 01 and the short dilatation joint gap 32 of coal dust jet pipe 01 is four, the width of the long dilatation joint gap 31 of central wind-tube 02 and the short dilatation joint gap 32 of central wind-tube 02 is 2mm to 3mm, the width of the long dilatation joint gap 31 of coal dust jet pipe 01 and the short dilatation joint gap 32 of coal dust jet pipe 01 is 2mm to 3mm, the length of the long dilatation joint gap 31 of central wind-tube 02 is 80mm to 100mm, the length of the short dilatation joint gap 32 of central wind-tube 02 is 50mm to 70mm, the length of the long dilatation joint gap 31 of coal dust jet pipe 01 is 80mm to 100mm, the length of the short dilatation joint gap 32 of coal dust jet pipe 01 is 50mm to 70mm.
In present embodiment, undocumented technical characteristic is identical with detailed description of the invention six.
Detailed description of the invention eight: composition graphs 1 to Fig. 8 illustrates, entrance tube connector 16 inwall of present embodiment, taper reducer pipe 15 inwall and pulverized coal channel tube connector 06 inwall are wear resistant ceramic chip inwall, and the outer wall of central air hose 09 is wear resistant ceramic chip outer wall.
In present embodiment, undocumented technical characteristic is identical with detailed description of the invention seven.
Detailed description of the invention nine: composition graphs 1 to Fig. 8 illustrates, the coal dust jet pipe 01 of present embodiment is 40Cr25Ni20,5Cr28Ni48W5 or 3Cr24Ni7SiN heat resisting cast steel jet pipe.
In present embodiment, undocumented technical characteristic is identical with detailed description of the invention one.
Operation principle
Illustrate see Fig. 1, coal dust mixed airflow enters in assembly of the present utility model from entrance tube connector 16 air inlet, the breeze airflow in centre wind inlet tube 07 front shelters from by fan shape baffle 18, prevent breeze airflow from corroding centre wind inlet tube 07, secondary combustion-supporting wind enters in coal dust jet pipe 01 by centre wind inlet tube 07 simultaneously, secondary combustion-supporting wind mixes at coal dust jet pipe 01 outlet air end inner face place with coal dust mixed airflow, and enters in burner hearth.
Claims (9)
1. the centre wind sleeve with dilatation joint and pulverized coal channel assembly, it is characterized in that: the described centre wind sleeve with dilatation joint and pulverized coal channel assembly comprise coal dust jet pipe (01), central wind-tube (02), pulverized coal channel tube connector (06), centre wind inlet tube (07), central air hose (09), wear-resistant ceramic cone (12), taper reducer pipe (15), entrance tube connector (16), fan shape baffle (18) and some pieces of wear resistant ceramic chips (20), entrance tube connector (16), taper reducer pipe (15), pulverized coal channel tube connector (06) and coal dust jet pipe (01) are communicated with affixed successively, central air hose (09) is fixed in pulverized coal channel tube connector (06), central wind-tube (02) is fixed in coal dust jet pipe (01), central wind-tube (02) and coal dust jet pipe (01) are coaxially arranged, the air intake of central wind-tube (02) is communicated with the outlet air end of central air hose (09), the outlet air end of central wind-tube (02) is arranged at inside the outlet air end of coal dust jet pipe (01), coal dust jet pipe (01) is heat resistant and wear resistant cast steel jet pipe, central wind-tube (02) is high temperature resistant stainless steel air duct, pulverized coal channel tube connector (06) lateral wall is provided with centre wind inlet tube (07), centre wind inlet tube (07) is communicated with central air hose (09), central air hose (09) lateral wall is connected with wear resistant ceramic chip (20), entrance tube connector (16) inwall, taper reducer pipe (15) inwall and pulverized coal channel tube connector (06) inwall are all connected with wear resistant ceramic chip (20), the outer end of entrance tube connector (16) offers air inlet, fan shape baffle (18) is provided with in entrance tube connector (16), fan shape baffle (18) is fixed in the air inlet of entrance tube connector (16) and correspondingly with centre wind inlet tube (07) arranges, fan shape baffle (18) surface is connected with wear resistant ceramic chip (20), the air intake outer face of central air hose (09) is connected with wear-resistant ceramic cone (12), wear-resistant ceramic cone (12) is arranged in taper reducer pipe (15),
The outlet air end of coal dust jet pipe (01) offers several long dilatation joint gap (31) and several short dilatation joint gap (32), the long dilatation joint gap (31) of coal dust jet pipe (01) and the short dilatation joint gap (32) of coal dust jet pipe (01) are successively alternately along the circumference uniform distribution of the outlet air end of coal dust jet pipe (01)
The outlet air end inwall of coal dust jet pipe (01) is connected with some block length dilatation joint gap cover plate (33) and some pieces short dilatation joint gap cover plates (34), the long dilatation joint gap cover plate (33) of coal dust jet pipe (01) and long dilatation joint gap (31) one_to_one corresponding of coal dust jet pipe (01) are arranged, the short dilatation joint gap cover plate (34) of coal dust jet pipe (01) and short dilatation joint gap (32) one_to_one corresponding of coal dust jet pipe (01) are arranged
The outlet air end of central wind-tube (02) offers several long dilatation joint gap (31) and several short dilatation joint gap (32), the long dilatation joint gap (31) of central wind-tube (02) and the short dilatation joint gap (32) of central wind-tube (02) replace the circumference uniform distribution of the centrally outlet air end of air duct (02) successively, the outlet air end inwall of central wind-tube (02) is connected with some block length dilatation joint gap cover plate (33) and some pieces short dilatation joint gap cover plates (34), the long dilatation joint gap cover plate (33) of central wind-tube (02) and long dilatation joint gap (31) one_to_one corresponding of central wind-tube (02) are arranged, the short dilatation joint gap cover plate (34) of central wind-tube (02) and short dilatation joint gap (32) one_to_one corresponding of central wind-tube (02) are arranged.
2. the centre wind sleeve with dilatation joint according to claim 1 and pulverized coal channel assembly, it is characterized in that: the described centre wind sleeve with dilatation joint and pulverized coal channel assembly also comprise outer connecting ring (05) and interior connecting ring (04), pulverized coal channel tube connector (06) outlet air end and outer connecting ring (05) are welded and fixed, outer connecting ring (05) and coal dust jet pipe (01) are welded and fixed, outlet air end and the interior connecting ring (04) of central air hose (09) are welded and fixed, and interior connecting ring (04) and central wind-tube (02) are welded and fixed.
3. the centre wind sleeve with dilatation joint according to claim 1 and 2 and pulverized coal channel assembly, is characterized in that: the outlet air end of centre wind inlet tube (07) is connected with deflector (08).
4. the centre wind sleeve with dilatation joint according to claim 3 and pulverized coal channel assembly, is characterized in that: the described centre wind sleeve with dilatation joint and pulverized coal channel assembly also comprise ship type anti-return extension board group (71) and gripper shoe
(19), the bottom surface of ship type anti-return extension board group (71) respectively with central air hose (09) and central wind-tube (02) Joint, the end face of ship type anti-return extension board group (71) respectively with pulverized coal channel tube connector (06) and coal dust jet pipe (01) Joint, the large end of ship type anti-return extension board group (71) and centre wind inlet tube (07) outer wall Joint, gripper shoe (19) one end and coal dust jet pipe (01) Joint, the other end of gripper shoe (19) and central wind-tube (02) Joint.
5. the centre wind sleeve with dilatation joint according to claim 4 and pulverized coal channel assembly, it is characterized in that: the described centre wind sleeve with dilatation joint and pulverized coal channel assembly also comprise ceramic cap (21) and nut (14), the air intake outer face of central air hose (09) is connected with centre wind pipe end closure plate (11), centre wind pipe end closure plate (11) outer surface is connected with ceramic cone fixed bar (13), through hole is offered along wear-resistant ceramic cone (12) axis, wear-resistant ceramic cone (12) is set on ceramic cone fixed bar (13) by described through hole, nut (14) and ceramic cone fixed bar (13) outer end are connected, ceramic cap (21) is fixed on nut (14).
6. the centre wind sleeve with dilatation joint according to claim 5 and pulverized coal channel assembly, it is characterized in that: the described centre wind sleeve with dilatation joint and pulverized coal channel assembly also comprise two pieces of connecting plates (10), the inwall of pulverized coal channel tube connector (06) and two pieces of connecting plate (10) Joints, two pieces of connecting plates (10) and central air hose (09) Joint, entrance tube connector (16) outer end is connected with outside adpting flange (17).
7. the centre wind sleeve with dilatation joint according to claim 6 and pulverized coal channel assembly, it is characterized in that: the quantity of the long dilatation joint gap (31) of central wind-tube (02) and the short dilatation joint gap (32) of central wind-tube (02) is four, the quantity of the long dilatation joint gap (31) of coal dust jet pipe (01) and the short dilatation joint gap (32) of coal dust jet pipe (01) is four, the width of the long dilatation joint gap (31) of central wind-tube (02) and the short dilatation joint gap (32) of central wind-tube (02) is 2mm to 3mm, the width of the long dilatation joint gap (31) of coal dust jet pipe (01) and the short dilatation joint gap (32) of coal dust jet pipe (01) is 2mm to 3mm, the length of the long dilatation joint gap (31) of central wind-tube (02) is 80mm to 100mm, the length of the short dilatation joint gap (32) of central wind-tube (02) is 50mm to 70mm, the length of the long dilatation joint gap (31) of coal dust jet pipe (01) is 80mm to 100mm, the length of the short dilatation joint gap (32) of coal dust jet pipe (01) is 50mm to 70mm.
8. the centre wind sleeve with dilatation joint according to claim 7 and pulverized coal channel assembly, it is characterized in that: entrance tube connector (16) inwall, taper reducer pipe (15) inwall and pulverized coal channel tube connector (06) inwall are wear resistant ceramic chip inwall, the outer wall of central air hose (09) is wear resistant ceramic chip outer wall.
9. the centre wind sleeve with dilatation joint according to claim 1 and pulverized coal channel assembly, is characterized in that: coal dust jet pipe (01) is 40Cr25Ni20,5Cr28Ni48W5 or 3Cr24Ni7SiN heat resisting cast steel jet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520257588.9U CN204554806U (en) | 2015-04-24 | 2015-04-24 | With centre wind sleeve and the pulverized coal channel assembly of dilatation joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520257588.9U CN204554806U (en) | 2015-04-24 | 2015-04-24 | With centre wind sleeve and the pulverized coal channel assembly of dilatation joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204554806U true CN204554806U (en) | 2015-08-12 |
Family
ID=53829911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520257588.9U Active CN204554806U (en) | 2015-04-24 | 2015-04-24 | With centre wind sleeve and the pulverized coal channel assembly of dilatation joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204554806U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112050199A (en) * | 2020-08-21 | 2020-12-08 | 北京巴布科克·威尔科克斯有限公司 | Burner and W flame boiler |
-
2015
- 2015-04-24 CN CN201520257588.9U patent/CN204554806U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112050199A (en) * | 2020-08-21 | 2020-12-08 | 北京巴布科克·威尔科克斯有限公司 | Burner and W flame boiler |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101725969B (en) | Low-NOx pulverized coal burner | |
| CN103791494B (en) | A kind of air-cooled coal dust low NO and using method thereof | |
| CN204678328U (en) | combustion powder industrial boiler | |
| CN101324334B (en) | Low NOx liquid state slag-off double-eddy flow coal-powder combustor | |
| CN205690401U (en) | The strong mixing multi fuel mixing burner of direct current | |
| CN204554806U (en) | With centre wind sleeve and the pulverized coal channel assembly of dilatation joint | |
| CN102818270A (en) | Mixed combustion gun and mixed combustion method | |
| CN103062773A (en) | Dual-purpose burner applicable to high-temperature gas and heavy oil | |
| CN101629718A (en) | Low-nitrogen-oxide multi-tube axial eddy pulverized-coal burner | |
| CN208418734U (en) | A kind of low-NOx combustor for natural gas and coal dust | |
| CN204987008U (en) | Bispin STREAMING low heat value gas combustion ware | |
| CN204554805U (en) | A kind of micro-oily oxygen enriched powdered coal burner | |
| CN203464270U (en) | Novel two-cyclone oxygen-rich micro-oil ignition stable combustion coal powder combustor | |
| CN202792006U (en) | Head assembly of high-thrust and double-rotational-flow coal dust burner | |
| CN108397774A (en) | It is a kind of to be used for natural gas and the coal dust individually burner of burning or multifuel combustion | |
| CN206001454U (en) | A kind of coal burner | |
| CN102734796A (en) | Low-quality coal burner | |
| CN103411215A (en) | Multi-directional jet-type cyclone pulverized coal burner | |
| CN102944014A (en) | Industrial boiler burner and industrial boiler with same | |
| CN204358725U (en) | Fuel burner nozzle | |
| CN104121595B (en) | Rapid cooling type smoke mixing chamber device | |
| CN105953225B (en) | Pulverized coal burner | |
| CN202902271U (en) | Industrial boiler burner and industrial boiler with the same | |
| CN204534591U (en) | Domestic waste incineration oil-gas two-way type burner | |
| CN202792005U (en) | Pulverized coal boiler weak breath ignition device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |