CN201739195U - Converter gas dry process axial flow fan device - Google Patents
Converter gas dry process axial flow fan device Download PDFInfo
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- CN201739195U CN201739195U CN2010201952771U CN201020195277U CN201739195U CN 201739195 U CN201739195 U CN 201739195U CN 2010201952771 U CN2010201952771 U CN 2010201952771U CN 201020195277 U CN201020195277 U CN 201020195277U CN 201739195 U CN201739195 U CN 201739195U
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Abstract
The utility model relates to a converter gas dry process axial flow fan device, which comprises a fan shell, a motor and a coupling, a main shaft and a gas inlet chamber which are connected with the motor, a front guide vane located between the gas inlet chamber and the fan shell, an impeller located in the fan shell, a rear guide vane located at the gas outlet side of the impeller and welded between outer barrel and the inner barrel of the fan shell, a diffuser and a cooling fan. The axial flow fan device also comprises a built-in front guide vane and a flow collector which forms an integral structure with the front vane and makes inlet airflow converged and accelerated; the flow collector is located between the fan gas inlet chamber and the fan shell; the shell is in a cone shape; the inner barrel is cylindrical; and the coflow cross section is gradually decreased along the airflow direction. The flow fan device has high dedusting purification efficiency, and the dust concentration can be directly reduced to 10mg/Nm<3> or under through an electric deduster; the flow fan device does not generate the secondary pollution and has small system drag loss and high gas recovery rate; recovered dust can be directly utilized, and thereby, the energy sources are saved; the system is simplified, occupies small area and is convenient for management and maintenance.
Description
Technical field
The utility model relates to a kind of dry method dust field, and is concrete, and the utility model relates to a kind of converter gas dry method axial-flow blower device, and described converter gas dry method axial-flow blower device is used for the converter coal gas purification of Iron And Steel Plant and the dry method dust of reclaiming system.
Background technique
The traditional wet dedusting technology (OG method) of the many employings of the converter coal gas purification of the existing Iron And Steel Plant of China and reclaiming system, automatic control level is low, and the coal-gas recovering amount is lower, and it is 8360kJ/m that a general ton steel on average reclaims calorific value
3Coal gas 70～80m
3Dust content of gas after the purification still reaches 100mg/m
3, go out gas cabinet after, need carry out wet-esp, the reclaiming system energy consumption is bigger.The ton steel process energy consumption of converter current steel-making is a 23.6kg mark coal.
The ton steel coal-gas recovering amount of dry dedusting technology (LT method) is 100m
3(calorific value of gas is 8360kJ/m
3), dust content of gas 10mg/m
3, steel-making ton steel process energy consumption only is 10kg mark coal.Therefore, the converter gas dry dedusting technology is acknowledged as developing direction from now on.Domestic and international many enterprises are using the converter gas dry method dust collecting process.
For example, German LURGI and Di Sen steel mill have developed jointly dry dedusting technology (LT method) last century.China's Laigang steel works has the converter of 3 120t top and bottom compound blow formulas, year design output 5,000,000 t, and three blow three productions, and the Annual output of real border reaches 3,000,000 t, all adopts dry dedusting technology.Baosteel is introduced converter gas dry-dedusting system in last century Mo.
Converter gas dry method dust collecting process flow process is after converter gas passes through movable gas hood, heat recovering device and gasification cooling stack, temperature is 800-1000 ℃, enter into devaporizer, adopt two medium atomization nozzles in the devaporizer, with high pressure steam make water fogging the back cooled flue gas, at this moment the sedimentation of under the effect of water smoke, reuniting of coarse grained dust, the meal dirt of formation by the cinder transporting system to the cinder feed bin; Cooled smoke enters the cylinder type electric cleaner by pipeline, temperature is 150-180 ℃, and electric cleaner is established four electric fields, adopts high-voltage dc pulse power, capture remaining fine dust, it is arrived thin grey feed bin by the chain conveyor under the electric cleaner, thin grey transporting system; The dust content of process electric cleaner is at 10mg/Nm
3Below, final qualified flue gas cools to 70 ℃ through gas cooler and enters gas cabinet, and defective flue gas diffuses.Slightly, thin ash directly is transported to sintering plant by automobile and utilizes as raw materials for sintering again, the processing range of dry dedusting technology enters devaporizer from flue gas to begin mainly to be made up of equipment such as devaporizer, cylinder electrical precipitator, axial-flow blower, switching station, gas coolers till the gas cooler.
Yet there is following shortcoming in the blower fan that converter gas dry method dust collecting process flow process in the past and system adopt:
1. the draught fan impeller diameter is big, rotary inertia is big, is not suitable for frequent speed governing working condition requirement;
2. blower fan stable operation zone is narrow, and pressure coefficient is little, is difficult to satisfy the system stable operation requirement;
3. air-flow needs through repeatedly break-in at the centrifugal blower runner, and the unobstructed property of runner is poor, can not satisfy quick venting of dust explosion requirement, and causes device damage easily.
The axial flow fan pressure coefficient is less, can not satisfy the dry-dedusting system parameter request.
Then, cause following problems:
The lubricated shakiness of bearing, bearing is short working life; There are secondary pollution and sewage treatment; System's resistance is decreased greatly, the coal-gas recovering amount is not high enough, and it is poor that the recovery dust directly utilizes, unfavorable energy saving; Administer and maintain inconvenience.
The model utility content
For overcoming the problems referred to above, the purpose of this utility model is: a kind of converter gas dry method axial-flow blower device is provided, and described converter gas dry method axial-flow blower device is used for the converter coal gas purification of iron and steel enterprise and the dry method dust of reclaiming system.
Converter gas dry method axial-flow blower device udst separation efficient height described in the utility model can directly be reduced to 10mg/Nm with dust concentration by electric cleaner
3Below; There are not secondary pollution and sewage treatment; Little, coal-gas recovering amount height is decreased in system's resistance, reclaims dust and can directly utilize energy saving; System simplification, floor space is little, is convenient to administer and maintain.
Converter gas dry method axial-flow blower device technique scheme of the present utility model is as follows:
A kind of converter gas dry method axial-flow blower device is the axial-flow blower device that a stator blade variable speed is regulated, and comprising: coupling, main shaft, the inlet box of axial-flow blower housing, motor and connection motor; Preceding stator between inlet box and Blower Housing; Be positioned at the impeller of Blower Housing inside, in Blower Housing impeller give vent to anger side, be welded on the rear guide vane sheet between Blower Housing urceolus and the inner core, Diffuser and be arranged at the cooling blower of Diffuser one end, it is characterized in that described axial-flow blower also comprises built-in preceding stator and the slip ring that is structure as a whole, makes the inlet air flow convergence to quicken with described preceding stator; Described slip ring is between blower fan inlet box and Blower Housing, and shell is a cone shape, and inner core is cylindrical, reduces gradually along airflow direction with flow section.
According to the utility model, because described slip ring and built-in preceding stator thereof be between blower fan inlet box and Blower Housing, and be welded into as a wholely with inlet box, therefore reduced dielectric leakage.In addition, inlet box is that 30-32 ° the oblique side plate and the coaming plate of circular arc type are formed by the inclination angle, and is provided with water conservancy diversion resistance rotating plate at vertical split, vertical diameter can be become pure axial flow to the air-flow that enters blower fan, make air-flow enter preceding stator more swimmingly, reduced eddy current loss.
According to converter gas dry method axial-flow blower device of the present utility model, it is characterized in that described preceding guide vane structure is three-dimensional twisted plank frame.
Preceding stator is one of this blower fan core component.Should before stator adopt Theory of Three-dimensional Flowing carry out the design of leading blade profile line, its structure is three-dimensional twisted plank frame, makes the inlet air flow angle of attack of the different anchor rings of impeller blade all reach the optimum value of theoretical calculation.
According to converter gas dry method axial-flow blower device of the present utility model, it is characterized in that described impeller blade is three-dimensional twisted board-like blade profile, its wheel hub molded lines leading portion adopts the meridian accelerating structure, that is, meridian accelerating sections wheel hub is the awl cambered surface, and passage section reduces along airflow direction, the cylindrical end hub diameter is constant, cross-sectional flow area is identical along airflow direction, and promptly back segment is cylindrical, the outlet end hub ratio, be impeller outlet place hub diameter and the ratio of impeller outer diameter is 0.75-0.85, preferably 0.8.
Impeller, be the most crucial parts of blower fan, also be the independent blade profile newly developed of the inventor, because blade is three-dimensional twisted, board-like blade profile, wheel hub molded lines leading portion adopts the meridian accelerating structure, back segment is cylindrical, and impeller outlet place hub diameter is 0.75-0.85 with the ratio of impeller outer diameter, preferably 0.8, thus, increase blade convex surface airflow kinetic energy, postponed airflow breakaway.
According to converter gas dry method axial-flow blower device of the present utility model, it is characterized in that described impeller blade is long and short blade, have the leaf design of gusset open style, that is, there is certain interval the deviated splitter vane joint;
According to converter gas dry method axial-flow blower device of the present utility model, it is characterized in that the specific speed scope of blower fan stable work area is 66-75.
Because adopt leaf design of gusset open style and long and short blade structure, the short blade established angle that is arranged in outlet end is adjustable, performance is wideer, and Applicable scope is wider.In addition, the specific speed scope of blower fan stable work area is between the 66-75, has broken through original in single-stage axial-flow blower application area understanding (specific speed is not less than 85).
According to converter gas dry method axial-flow blower device of the present utility model, it is characterized in that described blower fan adopts the segmented main shaft, flange connects and the seam location, that is and, the impeller section main shaft can be dismantled separately; Two sections main shafts connect by forging flange plate, and pairing flange connecting dish is processed with corresponding boss, pit and air vent respectively.
Thus, be convenient to maintenance, the replacing of the draught fan impeller of converter gas dry method axial-flow blower device of the present utility model.The reliability of connection and the convenience of dismounting have been guaranteed.
According to converter gas dry method axial-flow blower device of the present utility model, it is characterized in that described rear guide vane adopts single circular arc plank frame.
Because rear guide vane adopts single circular arc plank frame, can carry out rectification to the impeller outlet air-flow easily, simultaneously, play the support rotor effect, this structural design has reduced the loss of streaming of supplemental support in the runner and air-flow.
According to converter gas dry method axial-flow blower device of the present utility model, it is characterized in that described Diffuser is positioned at the Blower Housing air side, the side that the Diffuser diameter is little links to each other with Blower Housing, and the side that the Diffuser diameter is big links to each other with exhaust outlet side pipe road.
Described Diffuser reduces the air-flow that the blower fan outlet has high flow velocities gradually its dynamic pressure energy, improves its static energy, to overcome the resistance of fan outlet tube road and equipment.
According to converter gas dry method axial-flow blower device of the present utility model, it is characterized in that, the expansion ratio of described Diffuser, the outer subtended angle degree of promptly drawing together depressor is the 9-11 degree.
According to converter gas dry method axial-flow blower device of the present utility model, it is characterized in that, the expansion ratio of described Diffuser, the outer subtended angle degree of promptly drawing together depressor is 10 degree.
Thus, suitable expansion ratio design helps reducing diffusion loss, improves the static energy of blower fan.
According to converter gas dry method axial-flow blower device of the present utility model, it is characterized in that described axial-flow blower is provided with bearing and the bearing support that is positioned at the housing inboard, described bearing adopts thin oil lubricant, forced air cooling, described hull outside is provided with oil-filling device and oil level indicator.
Because the rotation speed of fan height, bearing adopts thin oil lubricant, and forced air cooling is positioned at the bearing support of housing inboard, and oil-filling device and oil level indicator all cause hull outside.Novel band oil ring and oil circuit design can guarantee that bearing lubrication is more reliable, and cooling effect is better.
Thus, the air-flow that the blower fan outlet is had high flow velocities reduces its dynamic pressure energy gradually, improves its static energy, to overcome the resistance of fan outlet tube road and equipment.
According to converter gas dry method axial-flow blower device of the present utility model, this axial-flow blower device is used for the converter dry method dust and the gas recovery system of Iron And Steel Plant, udst separation efficient height; This system does not exist secondary pollution and sewage treatment; Little, coal-gas recovering amount height is decreased in system's resistance, reclaims dust and can directly utilize energy saving; System simplification, floor space is little, is convenient to administer and maintain.
Description of drawings
Fig. 1 is a converter gas dry method axial-flow blower device schematic representation of the present utility model.
Fig. 2 is stator one a routine stereogram before the converter gas dry method axial-flow blower device of the present utility model.
Fig. 3 is another routine stereogram of stator before the converter gas dry method axial-flow blower device of the present utility model.
Fig. 4 is a converter gas dry method axial-flow blower device impeller stereogram of the present utility model.
Fig. 5 is converter gas dry method axial-flow blower device rear guide vane one an illustration intention of the present utility model.
Fig. 6 is a converter gas dry method axial-flow blower device main shaft schematic representation of the present utility model.
Fig. 7 is a converter gas dry method axial-flow blower device impeller sectional view of the present utility model.
Fig. 8 is a converter gas dry method axial-flow blower device Diffuser schematic representation of the present utility model.
Among the figure, 1 is motor, and 2 is coupling, and 3 is bearing support, 4 is inlet box, and 5 is preceding stator, and 6 is main shaft, 7 is impeller, and 8 is Blower Housing, and 8a is a rear guide vane, 9 is Diffuser, and 10 is cooling blower, and 11 is preceding stator blade, 12 is impeller blade, and 13 is slip ring, 14,15 are respectively the long and short blade of impeller, and 16 is flange connections, and 17 is seam screens place.
Embodiment
Below, ginseng is made accompanying drawing, specifies converter gas dry method axial-flow blower device of the present utility model.
Embodiment 1
A kind of converter gas dry method axial-flow blower device comprises: coupling, main shaft, the inlet box of axial-flow blower housing, motor and connection motor; Preceding stator between inlet box and Blower Housing; Be positioned at the impeller of Blower Housing inside, in Blower Housing impeller give vent to anger side, be welded on the rear guide vane sheet between Blower Housing urceolus and the inner core, Diffuser and be arranged at the cooling blower of Diffuser one end.Described axial-flow blower also comprises built-in preceding stator and the slip ring that is structure as a whole, makes the inlet air flow convergence to quicken with described preceding stator.
Motor adopts the flame-proof converter motor, is in the flammable explosive gas environment for blower fan provides this blower fan of efficient cause, and the adapted coupling adopts the explosion-proof type coupling.
Described slip ring is between blower fan inlet box and Blower Housing, and shell is a cone shape, and inner core is cylindrical, reduces gradually along airflow direction with flow section.Described slip ring and built-in preceding stator thereof and are welded into as a wholely with inlet box between blower fan inlet box and Blower Housing, have therefore reduced dielectric leakage.Inlet box is that 30-32 ° the oblique side plate and the coaming plate of circular arc type are formed by the inclination angle, and be provided with water conservancy diversion resistance rotating plate at vertical split, vertical diameter can be become pure axial flow to the air-flow that enters blower fan, make air-flow enter preceding stator more swimmingly, reduce eddy current loss.
In the present embodiment, preceding stator adopts Theory of Three-dimensional Flowing to carry out the design of leading blade profile line, and its structure is three-dimensional twisted plank frame, makes the inlet air flow angle of attack of the different anchor rings of impeller blade all reach the optimum value of theoretical calculation.
Equally, impeller is the most crucial parts of blower fan, also be the independent blade profile newly developed of the inventor, in the present embodiment, described impeller blade is three-dimensional twisted board-like blade profile, its wheel hub molded lines leading portion adopts the meridian accelerating structure, that is, meridian accelerating sections wheel hub is the awl cambered surface, passage section reduces along airflow direction, the cylindrical end hub diameter is constant, and cross-sectional flow area is identical along airflow direction, and promptly back segment is cylindrical, the outlet end hub ratio, promptly impeller outlet place hub diameter is 0.8 with the ratio of impeller outer diameter.Thus, increase blade convex surface airflow kinetic energy, postponed airflow breakaway.
In the present embodiment, described impeller blade is long and short blade, has the leaf design of gusset open style, that is, there is certain interval the deviated splitter vane joint.
In the present embodiment, owing to adopt leaf design of gusset open style and long and short blade structure, the short blade established angle that is arranged in outlet end is adjustable, and performance is wideer, and Applicable scope is wider.In addition, the specific speed scope of blower fan stable work area is between the 66-75, has broken through original in single-stage axial-flow blower application area understanding (specific speed is not less than 85).
In the present embodiment, described blower fan adopts the segmented main shaft, and the impeller section main shaft can be dismantled separately; Two sections main shafts pass through to forge flange plate and connect, and pairing flange connecting dish is processed with corresponding boss, pit and air vent respectively, has guaranteed the reliability of connection and the convenience of dismounting.
Rear guide vane adopts single circular arc plank frame, can carry out rectification to the impeller outlet air-flow easily, simultaneously, play the support rotor effect, and this structural design has reduced the loss of streaming of supplemental support in the runner and air-flow.
In the present embodiment, described Diffuser is positioned at the Blower Housing air side, and the side that the Diffuser diameter is little links to each other with Blower Housing, and the side that the Diffuser diameter is big links to each other with exhaust outlet side pipe road.And, the expansion ratio of described Diffuser, promptly the expansion angle of Diffuser is 10 degree.Thus, described Diffuser reduces the air-flow that the blower fan outlet has high flow velocities gradually its dynamic pressure energy, improves its static energy, to overcome the resistance of fan outlet tube road and equipment.
In the present embodiment, because the rotation speed of fan height, bearing adopts thin oil lubricant, and forced air cooling is positioned at the bearing support of housing inboard, and oil-filling device and oil level indicator all cause hull outside.Novel band oil ring and oil circuit design can guarantee that bearing lubrication is more reliable, and cooling effect is better.Cooling blower provides cooling air for the bearing support that is positioned at housing, promotes gas flow and heat exchange in the core tube, and retainer shaft acknowledgement of consignment row is reliable.
According to converter gas dry method axial-flow blower device of the present utility model, this axial-flow blower device is used for the converter dry method dust and the gas recovery system of Iron And Steel Plant, major advantage is: udst separation efficient height, can directly dust concentration be reduced to 10mg/Nm by electric cleaner
3Below; Blower fan stable work area field width, the pressure coefficient height can satisfy the system stable operation requirement; Rotor good rigidly, blade strength height can satisfy frequent speed governing needs; Relative centrifugal blower, this blower fan rotary inertia is little, and is corresponding fast when rotating speed is adjusted; Relative centrifugal blower, runner is unobstructed, and the gas explosion in the electric cleaner can in time be unloaded, and can not cause device damage; Lubricating of bearing is more reliable, the bearing long service life.
In addition, this system does not exist secondary pollution and sewage treatment; Little, coal-gas recovering amount height is decreased in system's resistance, reclaims dust and can directly utilize energy saving; System simplification, floor space is little, is convenient to administer and maintain.
Claims (10)
1. a converter gas dry method axial-flow blower device is the axial-flow blower device that a stator blade variable speed is regulated, and comprising: coupling, main shaft, the inlet box of axial-flow blower housing, motor and connection motor; Preceding stator between inlet box and Blower Housing; Be positioned at the impeller of Blower Housing inside, in Blower Housing impeller give vent to anger side, be welded on the rear guide vane between Blower Housing urceolus and the inner core, Diffuser and be arranged at the cooling blower in the Diffuser outside, it is characterized in that described axial-flow blower also comprises built-in preceding stator and the slip ring that is structure as a whole, makes the inlet air flow convergence to quicken with described preceding stator; Described slip ring is between blower fan inlet box and Blower Housing, and shell is a cone shape, and inner core is cylindrical, reduces gradually along airflow direction with flow section.
2. converter gas dry method axial-flow blower device as claimed in claim 1 is characterized in that, described preceding guide vane structure is three-dimensional twisted plank frame.
3. converter gas dry method axial-flow blower device as claimed in claim 1, it is characterized in that, described impeller blade is three-dimensional twisted board-like blade profile, its wheel hub molded lines leading portion adopts the meridian accelerating structure, that is, meridian accelerating sections wheel hub is the awl cambered surface, passage section reduces along airflow direction, the cylindrical end hub diameter is constant, and cross-sectional flow area is identical along airflow direction, and promptly back segment is cylindrical.
4. converter gas dry method axial-flow blower device as claimed in claim 1 is characterized in that, described impeller outlet end hub ratio, and promptly impeller outlet place hub diameter is 0.75-0.85 with the ratio of impeller outer diameter.
5. converter gas dry method axial-flow blower device as claimed in claim 1 is characterized in that, described impeller outlet end hub ratio, and promptly impeller outlet place hub diameter is 0.8 with the ratio of impeller outer diameter.
6. converter gas dry method axial-flow blower device as claimed in claim 1 is characterized in that described impeller blade is long and short blade, has the leaf design of gusset open style, that is, there is certain interval the deviated splitter vane joint.
7. converter gas dry method axial-flow blower device as claimed in claim 1 is characterized in that, described blower fan adopts the segmented main shaft, and flange connects and the seam location, that is, the impeller section main shaft can be dismantled separately; Two sections main shafts connect by forging flange plate, and pairing flange connecting dish is processed with corresponding boss, pit and air vent respectively.
8. converter gas dry method axial-flow blower device as claimed in claim 1 is characterized in that described rear guide vane blade adopts single circular arc plank frame.
9. converter gas dry method axial-flow blower device as claimed in claim 1 is characterized in that described Diffuser is positioned at the Blower Housing air side, and the side that the Diffuser diameter is little links to each other with Blower Housing, and the side that the Diffuser diameter is big links to each other with exhaust outlet side pipe road.
10. converter gas dry method axial-flow blower device as claimed in claim 1 is characterized in that, the expansion ratio of described Diffuser, and the outer subtended angle degree of promptly drawing together depressor is between the 9-11 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201952771U CN201739195U (en) | 2010-05-18 | 2010-05-18 | Converter gas dry process axial flow fan device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201952771U CN201739195U (en) | 2010-05-18 | 2010-05-18 | Converter gas dry process axial flow fan device |
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| Publication Number | Publication Date |
|---|---|
| CN201739195U true CN201739195U (en) | 2011-02-09 |
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ID=43554471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201952771U Expired - Fee Related CN201739195U (en) | 2010-05-18 | 2010-05-18 | Converter gas dry process axial flow fan device |
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| CN (1) | CN201739195U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345623A (en) * | 2011-07-20 | 2012-02-08 | 浙江义乌星耀风机有限公司 | Coal gas axial flow fan provided with anti-explosion stator structure and manufacturing method thereof |
| CN107795514A (en) * | 2017-11-29 | 2018-03-13 | 莱克电气股份有限公司 | A kind of centrifugal blower with blade wheel structure |
| CN108105155A (en) * | 2018-01-31 | 2018-06-01 | 浙江元达机电有限公司 | A kind of screw impeller |
| CN108731016A (en) * | 2018-08-03 | 2018-11-02 | 海宁马桥大都市热电有限公司 | A kind of boiler plant with flue gas ash removal, desulfurization and denitrification apparatus |
| CN108869342A (en) * | 2018-08-03 | 2018-11-23 | 海宁马桥大都市热电有限公司 | A kind of energy-efficient air-introduced machine applying to boiler |
-
2010
- 2010-05-18 CN CN2010201952771U patent/CN201739195U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345623A (en) * | 2011-07-20 | 2012-02-08 | 浙江义乌星耀风机有限公司 | Coal gas axial flow fan provided with anti-explosion stator structure and manufacturing method thereof |
| CN107795514A (en) * | 2017-11-29 | 2018-03-13 | 莱克电气股份有限公司 | A kind of centrifugal blower with blade wheel structure |
| CN107795514B (en) * | 2017-11-29 | 2024-03-26 | 莱克电气股份有限公司 | Centrifugal fan with impeller structure |
| CN108105155A (en) * | 2018-01-31 | 2018-06-01 | 浙江元达机电有限公司 | A kind of screw impeller |
| CN108105155B (en) * | 2018-01-31 | 2024-04-05 | 安徽新沪屏蔽泵有限责任公司 | Spiral impeller |
| CN108731016A (en) * | 2018-08-03 | 2018-11-02 | 海宁马桥大都市热电有限公司 | A kind of boiler plant with flue gas ash removal, desulfurization and denitrification apparatus |
| CN108869342A (en) * | 2018-08-03 | 2018-11-23 | 海宁马桥大都市热电有限公司 | A kind of energy-efficient air-introduced machine applying to boiler |
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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: JIANGSU JINTONGLING FLUID MACHINERY TECHNOLOGY CO. Free format text: FORMER NAME: JIANGSU JINTONGLING FAN CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 226001, No. 666, Zhong Xiu Dong Lu, Jiangsu, Nantong Patentee after: Jiangsu Jintongling Fluid Machinery Technology Co., Ltd. Address before: 226001, three or four floor, Baihua science and technology building, Zhong Xiu Zhong Road, Jiangsu, Nantong Patentee before: Jiangsu Jintongling Blower Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20160518 |
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| CF01 | Termination of patent right due to non-payment of annual fee |