CN103471418A - Noise control device for air outlet of large machine ventilation cooling tower - Google Patents
Noise control device for air outlet of large machine ventilation cooling tower Download PDFInfo
- Publication number
- CN103471418A CN103471418A CN2013104353597A CN201310435359A CN103471418A CN 103471418 A CN103471418 A CN 103471418A CN 2013104353597 A CN2013104353597 A CN 2013104353597A CN 201310435359 A CN201310435359 A CN 201310435359A CN 103471418 A CN103471418 A CN 103471418A
- Authority
- CN
- China
- Prior art keywords
- keel
- cooling tower
- exhaust outlet
- perforated plate
- purlin
- 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.)
- Granted
Links
Images
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention relates to a noise control device for an air outlet of a large machine ventilation cooling tower, which has the advantages of good noise control effect, little resistance loss, convenience in installation and maintenance. The noise control device comprises an exhaust flow guide cylinder. The exhaust flow guide cylinder is positioned above the air outlet of the machine ventilation cooling tower and comprises a color steel pressure plate, fireproof noise absorption cloth, a compression perforated plate, purlines and a keel frame, wherein the color steel pressure plate is arranged on the outermost side of the exhaust flow guide cylinder and is fixed on the purlines; the keel frame is arranged between the purlines; the compression perforated plate is arranged on the innermost side of the exhaust flow guide cylinder; the fireproof noise absorption cloth is arranged on the outer side of the compression perforated plate. The exhaust flow guide cylinder also comprises an air cavity, porous fiber noise absorption cotton and light noise insulation plates, wherein the air cavity is formed between the color steel pressure plate and the light noise insulation plates; a plurality of light noise insulation plates are arranged on the keel frame; the keel frame is internally filled with the porous fiber noise absorption cotton.
Description
Technical field
The present invention relates to a kind of oise damping means, particularly relate to a kind of oise damping means for the induced cooling tower exhaust outlet.
Background technology
In recent years, properly handle large-scale induced cooling tower running noises and the problem that affects of surrounding environment is progressively become to the common recognition of the whole society, along with the in-depth of environmental consciousness and renovation dynamics, large-scale induced cooling tower running noises pollutes is just becoming current new problem urgently to be resolved hurrily.The measure commonly used of present stage is as disclosed a kind of cooling tower noise eliminating silencer in Chinese utility model patent invention book CN202793069, comprise cooling tower, pond, cooling tower bottom, the outside, described pond is provided with isolated footing, be provided with some noise elimination flow deflectors by some columns and cross beam frame on isolated footing, the upper end of noise elimination flow deflector is provided with lamina tecti, the noise elimination flow deflector, lamina tecti and isolated footing form a continuous enclosed construction of " 7 " font, the noise elimination flow deflector includes compound sound absorption body, the external acoustic absorption nonwoven fabrics that is enclosed with of compound sound absorption, acoustic absorption nonwoven fabrics is provided with perforated plate outward, two ends are provided with the wind-guiding head.Lamina tecti is compound Felt, and compound Felt is synthesized by outside plate color steel, interior filled composite sound absorption body, the combination of inner panel perforated plate, and inside is fixed with reinforcement.
Generally, large-scale induced cooling tower exhaust outlet often causes the clean air draft area of exhaust outlet significantly to reduce after noise eliminating silencer is installed, and causes that wind speed increases, thereby produces the larger pressure loss, and then reduce the operational efficiency of cooling tower.And the equipment complexity, installation and maintenance difficulties are relatively large.Therefore, be badly in need of a kind ofly can controlling the exhaust outlet noise, the lower pressure loss is arranged again, relatively easy novel oise damping means is installed simultaneously.
Summary of the invention
The technical problem to be solved in the present invention is to provide and a kind ofly controls that noise effects is good, drag losses is little, equipment is installed and the oise damping means for large-scale induced cooling tower exhaust outlet easy to maintenance.
A kind of large-scale induced cooling tower exhaust outlet oise damping means of the present invention, comprise the air draft guide shell, described air draft guide shell is positioned at induced cooling tower exhaust outlet top, comprise color corrugated sheet steel, fire prevention sound absorption cloth, die mould perforated plate, purlin and keel frame, air draft guide shell outermost is color corrugated sheet steel, described color corrugated sheet steel is fixed on purlin, keel frame is installed between purlin, the air draft guide shell is the most inboard is the die mould perforated plate, described die mould perforated plate is fixed on purlin, and the die mould perforated plate outside is lined with fire prevention sound absorption cloth.Described air draft guide shell also comprises air chamber, porous fibre sound absorption cotton and light sound-insulation plate, form an air chamber between described color corrugated sheet steel and light sound-insulation plate, described some layers of light sound-insulation plate are arranged on keel frame, be filled with the porous fibre sound absorption in described keel frame cotton, described air draft guide shell and horizontal plane angle are between 45 °-135 °.
A kind of large-scale induced cooling tower exhaust outlet oise damping means of the present invention, wherein said light sound-insulation plate is calcium silicate board, plasterboard, cement pressure plate or damping sheet, the number of plies is in 1-4 layer scope, thickness, between 6-12mm, adopts fissure of displacement connecting method to install between described adjacent two layers light sound-insulation plate.
A kind of large-scale induced cooling tower exhaust outlet oise damping means of the present invention, its medium-pressure type perforated plate is fixed together by self threading pin and purlin, described light sound-insulation plate is fixed on keel frame by self threading pin, between described color corrugated sheet steel and purlin, by self threading pin, connect, wherein said self threading pin centre-to-centre spacing is less than or equal to 350mm, the edge pitch of nails is less than or equal to 300mm, and the gap between described light sound-insulation plate and purlin and adjacent light sound-insulation plate all seal with the filleting gypsum in assembled gap mutually.
A kind of large-scale induced cooling tower exhaust outlet oise damping means of the present invention, wherein said keel frame comprises along the top keel, along end keel, centre keel and stull keel, described centre keel upper end with along the top keel, be connected, lower end with along end keel, be connected, described centre keel is between the purlin two ends, described light sound-insulation plate is fixed on the stull keel, described stull keel are fixed between adjacent two centre keels, described along the top keel with lay respectively at the upper lower limb of keel frame along end keel, described centre keel spacing is not more than 600mm, can not be greater than 1200mm along top keel and the spacing along end keel.
A kind of large-scale induced cooling tower exhaust outlet oise damping means of the present invention, wherein said porous fibre sound absorption cotton is mineral wool or rock wool, the number of plies in 1-4 layer scope, thickness between 50-150mm, mineral wool unit weight scope 32-60kg/m wherein
3, rock wool unit weight scope 60-100kg/m
3.
A kind of large-scale induced cooling tower exhaust outlet oise damping means of the present invention, wherein said die mould perforated plate is aluminium sheet or galvanized sheet, thickness between 0.5-1.2mm, punching rate scope 20%-30%.
A kind of large-scale induced cooling tower exhaust outlet oise damping means of the present invention, wherein said fire prevention sound absorption cloth is hydrophobic glass silk cloth, and described hydrophobic glass silk cloth is laid between porous fibre sound absorption cotton and die mould perforated plate, and its edge sticks on the die mould perforated plate.
A kind of large-scale induced cooling tower exhaust outlet oise damping means difference from prior art of the present invention is that a kind of large-scale induced cooling tower exhaust outlet oise damping means of the present invention is equipped with the air draft guide shell above the induced cooling tower exhaust outlet, be formed with air chamber between color corrugated sheet steel and light sound-insulation plate, can effectively alleviate and absorption of noise, alleviate the overall weight of barrier simultaneously; The highdensity light sound-insulation plate of some layers is installed between air chamber and keel frame, can significantly intercepts noise, successful, the oise insulation factor R of air draft guide shell
wbetween 20～50dB, the sound-absorbing material acoustic absorptivity is more than or equal to 0.85; Be filled with porous fibre sound absorption in keel frame cotton, be mainly used to absorption of noise, also there is insulation and antiseptic effect simultaneously, can protect its inboard light sound-insulation plate not corroded, extension device service life; The installation angle of air draft guide shell and horizontal plane is between 45 °-135 °, and air draft guide shell overall structure is simple, is arranged on the position that certain distance is arranged apart from the exhaust outlet top, is convenient to staff's installation and maintenance.
Below in conjunction with accompanying drawing, a kind of large-scale induced cooling tower exhaust outlet oise damping means of the present invention is described further.
The accompanying drawing explanation
The structural representation that Fig. 1 is a kind of large-scale induced cooling tower exhaust outlet oise damping means of the present invention;
The facade that Fig. 2 is a kind of large-scale induced cooling tower exhaust outlet oise damping means of the present invention is arranged schematic diagram.
The specific embodiment
As shown in Figure 2, a kind of large-scale induced cooling tower exhaust outlet oise damping means of the present invention is arranged on the top of induced cooling tower exhaust outlet.
As shown in Figure 1, air draft guide shell 1 and horizontal plane angle between 45 °-135 °, its oise insulation factor R
wbetween 20～50dB, the sound-absorbing material acoustic absorptivity is more than or equal to 0.85.Air draft guide shell 1 comprises light sound-insulation plate 2, the sound absorption of the color corrugated sheet steel 4 of aluminizing, porous fibre is cotton 5, fire prevention sound absorption cloth 6, die mould perforated plate 7, purlin 8 and keel frame, keel frame comprises centre keel 9, stull keel 10, along top keel 13 with along end keel 14, centre keel Shang Xia 9 two ends respectively with along top keel 13 with along end keel 14, be connected, stull keel 10 are connected between adjacent two centre keels 9.The color corrugated sheet steel 4 of aluminizing is positioned at air draft guide shell 1 outermost, aluminize between color corrugated sheet steel 4 and its inboard light sound-insulation plate 2 and form an air chamber 11, wherein light sound-insulation plate 2 is two-layer, select high density silicic acid calcium plate, thickness is between 6-12mm, two-ply adopts fissure of displacement connecting method to install, smooth while requiring plate dock with plate during installation, align, and when the assurance plate docks, gap is as far as possible little.Light sound-insulation plate 2 also can be selected plasterboard, cement pressure plate or damping sheet in addition, and the number of plies is in 1-4 layer scope, and thickness is between 6-12mm.Light sound-insulation plate 2 installed inside have centre keel 9, be filled with porous fibre sound absorption cotton 5 between centre keel 9 and the most inboard die mould perforated plate 7, its center keel 9 spacings are not more than 600mm, mineral wool is selected in porous fibre sound absorption cotton 5, the number of plies is between the 1-4 layer, thickness between 50-150mm, unit weight scope 12-60kg/m
3, die mould perforated plate 7 is selected perforated plate in zinc-plated die mould, thickness between 0.5-1.2mm, punching rate scope 20%-30%.In addition, porous fibre sound absorption cotton 5 also can be selected rock wool, unit weight scope 60-100kg/m
3, die mould perforated plate 7 also can be selected aluminium sheet.Be provided with fire prevention sound absorption cloth 6 between porous fibre sound absorption cotton 5 and die mould perforated plate 7, fire prevention sound absorption cloth 6 is selected hydrophobic glass silk cloth, tiling is installed between die mould perforated plate 7 and porous fibre sound absorption cotton 5, fire prevention sound absorption cloth 6 must be laid smooth, edge paste with die mould perforated plate 7 on, do not allow to occur the phenomenons such as overlapping accumulation, porous fibre sound absorption cotton 5 be exposed.Die mould perforated plate 7 is fixed together by self threading pin 12 and purlin 8, light sound-insulation plate 2 is fixed on centre keel 9 by self threading pin 12, aluminize and connect by self threading pin 12 between color corrugated sheet steel 4 and purlin 8, wherein self threading pin 12 centre-to-centre spacing are less than or equal to 350mm, and the edge pitch of nails is less than or equal to 300mm.Between light sound-insulation plate 2 and purlin 8 and between light sound-insulation plate 2 mutually assembled gap by the sealing of filleting gypsum.On sound absorbing-insulating barrier 1 lower limb use respectively along top keel 13 with along end keel 14, be connected, along top keel 13 with can not be greater than 1200mm along end keel 14 spacings.
Operation principle of the present invention is as follows: air draft guide shell 1 is the sound absorption faces that die mould perforated plate 7 and porous fibre sound absorption cotton 5 form towards sound source one side, the exhaust outlet noise is from induced cooling tower exhaust outlet 3 is discharged, in air draft guide shell 1 outside communication process, the sound absorption mask has the sqouynd absorption lowering noise effect; Noise is when air draft guide shell 1 top diffraction propagation, and air draft guide shell 1 has diffraction decay Noise Reduction; Noise is led the sensing high altitude discharge through air draft guide shell 1, has the directive property factor that declines.Sqouynd absorption lowering noise, diffraction decay noise reduction and directive property decay noise reduction are the main Principles of Acoustics of air draft guide shell 1 noise reduction.
Simultaneously, because air draft guide shell 1 design top mark height is relatively high, the blower fan air draft is subject to the impact of air-flow hot drawing effect, and the cooling tower air draft is produced to actively impact, has reduced the pressure loss of air draft.
Above-described embodiment is described the preferred embodiment of the present invention; not scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that those of ordinary skills make technical scheme of the present invention, all should fall in the definite protection domain of the claims in the present invention book.
Claims (7)
1. one kind large-scale induced cooling tower exhaust outlet oise damping means, comprise the air draft guide shell, described air draft guide shell is positioned at induced cooling tower exhaust outlet top, comprise color corrugated sheet steel, fire prevention sound absorption cloth, the die mould perforated plate, purlin and keel frame, air draft guide shell outermost is color corrugated sheet steel, described color corrugated sheet steel is fixed on purlin, keel frame is installed between purlin, the air draft guide shell is the most inboard is the die mould perforated plate, described die mould perforated plate is fixed on purlin, the die mould perforated plate outside is lined with fire prevention sound absorption cloth, it is characterized in that: described air draft guide shell also comprises air chamber, porous fibre sound absorption cotton and light sound-insulation plate, form an air chamber between described color corrugated sheet steel and light sound-insulation plate, described some layers of light sound-insulation plate are arranged on keel frame, be filled with the porous fibre sound absorption in described keel frame cotton, described air draft guide shell and horizontal plane angle are between 45 °-135 °.
2. a kind of large-scale induced cooling tower exhaust outlet oise damping means according to claim 1, it is characterized in that: described light sound-insulation plate is calcium silicate board, plasterboard, cement pressure plate or damping sheet, the number of plies is in 1-4 layer scope, thickness, between 6-12mm, adopts fissure of displacement connecting method to install and connects between described adjacent two layers light sound-insulation plate.
3. a kind of large-scale induced cooling tower exhaust outlet oise damping means according to claim 1, it is characterized in that: the die mould perforated plate is fixed together by self threading pin and purlin, described light sound-insulation plate is fixed on keel frame by self threading pin, between described color corrugated sheet steel and purlin, by self threading pin, connect, wherein said self threading pin centre-to-centre spacing is less than or equal to 350mm, the edge pitch of nails is less than or equal to 300mm, and the gap between described light sound-insulation plate and purlin and adjacent light sound-insulation plate all seal with the filleting gypsum in assembled gap mutually.
4. a kind of large-scale induced cooling tower exhaust outlet oise damping means according to claim 3, it is characterized in that: described keel frame comprises along the top keel, along end keel, centre keel and stull keel, described centre keel upper end with along the top keel, be connected, lower end with along end keel, be connected, described centre keel is between the purlin two ends, described light sound-insulation plate is fixed on the stull keel, described stull keel are fixed between adjacent two centre keels, described along the top keel with lay respectively at the upper lower limb of keel frame along end keel, described centre keel spacing is not more than 600mm, can not be greater than 1200mm along top keel and the spacing along end keel.
5. a kind of large-scale induced cooling tower exhaust outlet oise damping means according to claim 1, it is characterized in that: described porous fibre sound absorption is cotton is mineral wool or rock wool, the number of plies in 1-4 layer scope, thickness between 50-150mm, mineral wool unit weight scope 32-60kg/m wherein
3, rock wool unit weight scope 60-100kg/m
3.
6. a kind of large-scale induced cooling tower exhaust outlet oise damping means according to claim 1, it is characterized in that: described die mould perforated plate is aluminium sheet or galvanized sheet, thickness between 0.5-1.2mm, punching rate scope 20%-30%.
7. a kind of large-scale induced cooling tower exhaust outlet oise damping means according to claim 1, it is characterized in that: described fire prevention sound absorption cloth is hydrophobic glass silk cloth, described hydrophobic glass silk cloth is laid between porous fibre sound absorption cotton and die mould perforated plate, and its edge sticks on the die mould perforated plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310435359.7A CN103471418B (en) | 2013-09-23 | 2013-09-23 | Noise control device for air outlet of large machine ventilation cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310435359.7A CN103471418B (en) | 2013-09-23 | 2013-09-23 | Noise control device for air outlet of large machine ventilation cooling tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103471418A true CN103471418A (en) | 2013-12-25 |
| CN103471418B CN103471418B (en) | 2015-04-29 |
Family
ID=49796373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310435359.7A Expired - Fee Related CN103471418B (en) | 2013-09-23 | 2013-09-23 | Noise control device for air outlet of large machine ventilation cooling tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103471418B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104008748A (en) * | 2014-05-06 | 2014-08-27 | 北京绿创声学工程设计研究院有限公司 | Shuttle type sheet silencer |
| CN104064173A (en) * | 2014-05-08 | 2014-09-24 | 浙江浙能嘉兴发电有限公司 | Noise reduction device for boiler plant of power station |
| CN106767117A (en) * | 2016-12-05 | 2017-05-31 | 中建钢构有限公司 | A kind of protector of steel structure cooling tower |
| CN107356129A (en) * | 2017-07-28 | 2017-11-17 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of denoising device of mechanical-draft cooling tower |
| CN108282111A (en) * | 2018-02-28 | 2018-07-13 | 中国建筑第八工程局有限公司 | Noise piezoelectric power generation system and its electricity-generating method for electromechanical equipment case |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3304387A1 (en) * | 1983-02-09 | 1984-08-09 | Gerb Akustik Consult GmbH, 4300 Essen | Device for absorbing noises in cooling towers and large blowers |
| JPH07167572A (en) * | 1993-12-16 | 1995-07-04 | Mitsubishi Heavy Ind Ltd | Sound insulation equipment for cooling tower |
| CN201184670Y (en) * | 2007-11-29 | 2009-01-21 | 北京绿创声学工程股份有限公司 | Mechanical-draft cooling tower silencing device |
| CN101377388A (en) * | 2008-09-11 | 2009-03-04 | 金坛市塑料厂 | Special sound-absorbing noise-reducing plate for noise-reducing anti-freezing device of cooling tower |
| CN201311202Y (en) * | 2008-11-27 | 2009-09-16 | 管印贵 | Silencing device of cooling tower |
| CN102607294A (en) * | 2011-09-16 | 2012-07-25 | 厦门嘉达环保建造工程有限公司 | Cooling tower silencing structure |
-
2013
- 2013-09-23 CN CN201310435359.7A patent/CN103471418B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3304387A1 (en) * | 1983-02-09 | 1984-08-09 | Gerb Akustik Consult GmbH, 4300 Essen | Device for absorbing noises in cooling towers and large blowers |
| JPH07167572A (en) * | 1993-12-16 | 1995-07-04 | Mitsubishi Heavy Ind Ltd | Sound insulation equipment for cooling tower |
| CN201184670Y (en) * | 2007-11-29 | 2009-01-21 | 北京绿创声学工程股份有限公司 | Mechanical-draft cooling tower silencing device |
| CN101377388A (en) * | 2008-09-11 | 2009-03-04 | 金坛市塑料厂 | Special sound-absorbing noise-reducing plate for noise-reducing anti-freezing device of cooling tower |
| CN201311202Y (en) * | 2008-11-27 | 2009-09-16 | 管印贵 | Silencing device of cooling tower |
| CN102607294A (en) * | 2011-09-16 | 2012-07-25 | 厦门嘉达环保建造工程有限公司 | Cooling tower silencing structure |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104008748A (en) * | 2014-05-06 | 2014-08-27 | 北京绿创声学工程设计研究院有限公司 | Shuttle type sheet silencer |
| CN104064173A (en) * | 2014-05-08 | 2014-09-24 | 浙江浙能嘉兴发电有限公司 | Noise reduction device for boiler plant of power station |
| CN106767117A (en) * | 2016-12-05 | 2017-05-31 | 中建钢构有限公司 | A kind of protector of steel structure cooling tower |
| CN106767117B (en) * | 2016-12-05 | 2019-07-12 | 中建钢构有限公司 | A kind of protective device of steel structure cooling tower |
| CN107356129A (en) * | 2017-07-28 | 2017-11-17 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of denoising device of mechanical-draft cooling tower |
| CN108282111A (en) * | 2018-02-28 | 2018-07-13 | 中国建筑第八工程局有限公司 | Noise piezoelectric power generation system and its electricity-generating method for electromechanical equipment case |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103471418B (en) | 2015-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103471418B (en) | Noise control device for air outlet of large machine ventilation cooling tower | |
| CN202249622U (en) | Ventilating noise-elimination window for transformer station | |
| CN103471419A (en) | Directional exhaust noise attenuation system of large machine ventilation cooling tower | |
| CN204511651U (en) | The sound-deadening and noise-reducing device of heavy duty generator set | |
| CN101581122B (en) | Cast-in-place hollow floor with hidden protecting fume exhaust ductwork | |
| CN103711338B (en) | A kind of super-silent diesel generating set machine room noise control method | |
| CN103471420B (en) | Noise control device for air inlet of large machine ventilation cooling tower | |
| CN107356129A (en) | A kind of denoising device of mechanical-draft cooling tower | |
| CN209817186U (en) | Sound insulation and absorption partition wall | |
| CN110714539A (en) | Rock wool board thin plastering external wall heat preservation system | |
| CN207686039U (en) | A kind of light steel room sound-proofing insulation board | |
| CN201705737U (en) | Small landing air blower acoustic hood | |
| CN203248029U (en) | Double-track double-curtain type steel composite thermal insulation fireproof rolling blind | |
| CN202509634U (en) | Connecting structure for cement wood-wool slab and wall | |
| CN109162466A (en) | Room level units formula curtain wall installing structure and method | |
| CN205369569U (en) | Can assembled large -scale room ventilation sound -proof housing of repeated dismantlement | |
| CN209674921U (en) | A kind of rail traffic high fire-retardance fire resisting Water-proof mouse ant DC soft cable | |
| CN208167795U (en) | Three layers of class rectangle Urban Underground Complex for having both sqouynd absorption lowering noise, collecting airway dysfunction | |
| CN201416225Y (en) | Cast-in-situ open web building roof with hidden protection exhaustsmoke conduit system | |
| CN100469976C (en) | Magnetic suspension tunnel internal partitioned form | |
| CN102587526A (en) | Cement wood-wool plate and wall connecting structure and construction method | |
| CN220550928U (en) | Prefabricated cabin structure for arranging offshore hydrogen production equipment | |
| CN221298278U (en) | Machine room capable of reducing noise | |
| CN210507895U (en) | Sound insulation wall | |
| CN208623459U (en) | Ventilation and heat sound insulation and noise reduction system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Luo Xiaoqiang Inventor before: Luo Qiang |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LUO QIANG TO: LUO XIAOQIANG |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161019 Address after: North Fourth Ring Road 100083 Beijing Haidian District City 229 Haitai Building No. 725 Patentee after: Beijing sunward Energy Technology Co., Ltd. Address before: 100101, room 1306, Zhong Sheng building, 168 Beiyuan Road, Beijing, Chaoyang District Patentee before: Beijing Zhongya Kangyuan Environmental Protection Engineering Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20170923 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |