CN202884969U - Triple-travel air preheating radiant tube nozzle heat exchanger - Google Patents
Triple-travel air preheating radiant tube nozzle heat exchanger Download PDFInfo
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- CN202884969U CN202884969U CN2012203176261U CN201220317626U CN202884969U CN 202884969 U CN202884969 U CN 202884969U CN 2012203176261 U CN2012203176261 U CN 2012203176261U CN 201220317626 U CN201220317626 U CN 201220317626U CN 202884969 U CN202884969 U CN 202884969U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model provides a triple-travel air preheating radiant tube nozzle heat exchanger which is capable of increasing the temperature of air preheating, reducing the temperature of exhaust gas, and improving temperature efficiency and heat efficiency of the heat exchanger. The triple-travel air preheating radiant tube nozzle heat exchanger comprises an end plug, an interior finned pipe, multi-hole jet pipes, baffle rings, middle ducts, an air jet pipe, a middle heat exchanging duct, an exhaust gas guiding device, an irregular flange, an outer air duct, an expansion joint, a central fin heat exchanging pipe, an outer heat exchanging pipe, an exhaust gas outlet pipe and an air inlet pipe. The heat exchanger is divided into a built-in heat exchanging area and an external heat exchanging area, wherein the built-in heat exchanging area comprises the interior finned pipe on the outmost layer, the left end and the right end are respectively connected with the middle heat exchanging duct and the end plug, a plurality of multi-hole jet pipes with different lengths are arranged on the inner side of the interior finned pipe in a matched mode, baffle rings are arranged at the two ends of each multi-hole jet pipe in a matched mode, and one middle duct is arranged in the center of the multi-hole jet pipes and is connected with the air jet pipe. The external heat exchanging area comprises the outer air duct, the outer heat exchanging pipe and the central fin heat exchanging pipe from outside to inside in sequence, the expansion joint is arranged in the middle of the external heat exchanging area which is divided into two travels, the end head, close to the outer side, of the outer heat exchanging pipe is connected with the exhaust gas outlet pipe, one end, close to the inner side, of the outer air duct is connected with the air inlet pipe, the central fin heat exchanging pipe penetrates through the irregular flange and is connected with the middle heat exchanging duct, and the exhaust gas guiding device is arranged outside the connection portion of the central fin heat exchanging pipe and the middle heat exchanging duct. The triple-travel air preheating radiant tube nozzle heat exchanger is capable of increasing the temperature of air preheating, reducing the temperature of exhaust gas, and improving temperature efficiency and heat efficiency of the heat exchanger.
Description
Technical field
The utility model relates to technical field of heat exchange devices, relates in particular to a kind of and the matching used two-pass air preheat of radiation pipe burner tip radiation pipe burner tip heat exchanger.
Background technology
In recent years, along with the on a large scale promotion and application of radiant tube heating technique in the metal heat treatmet field, also obtained effective propelling for the research and development of various types of radiation pipe heating device, waste-heat recovery device, radiant tube material, pattern.Because the requirement to product quality, pollutant emission, waste heat recovery and control accuracy improves constantly, the radiation pipe burner tip mode of heating is from adopting manual ignition to gradually transition of automatic ignition, and original finned heat exchanger also far can not satisfy the requirement of existing waste heat recovery aspect, and the emphasis of research also turns to gradually for efficient waste heat and reclaims heat exchanger exploitation, the exploitation of long-life high temperature radiant tube and improve on the radiant tube surface temperature uniformity.
The radiation pipe burner tip heat exchanger is the core apparatus of radiant tube heating, comes warm-up combustion-supporting air in radiant tube inside by the waste heat recovery to combustion product gases.In the design of heat exchanger structure, following several pattern is arranged usually: (1) adopts the heat exchanger of inside and outside twin fin structure, namely the structural shape of fin is added in and the outside inboard at heat exchanger simultaneously, or strengthens heat transfer effect in the mode that the heat exchanger tube table adds pitted skin.Usually under 1000 ℃ flue-gas temperature, this heat exchanger can be with air preheat to 400 ℃, and heat exchange efficiency is relatively poor; (2) the stroke jet structure heat exchanger such as, this heat exchanger adopt the jet flow stroke to add the fin tube structure pattern to carry out heat exchange more, and namely the heat exchanger outer tube arranges finned tube, and inner tube adopts the multiple-pass jet structure to improve heat transfer effect.Under 1000 ℃ flue-gas temperature, air can be preheating to more than 500 ℃, and exhaust gas temperature drops to below 600 ℃, and heat exchange efficiency is higher.(3) the return-flow structure heat exchanger is entrainmented in employing, and this heat exchanger entrainments reflux by adding flue gas, and flue gas is entrainmented in the combustion air, under 1000 ℃ flue-gas temperature, air preheating temperature can reach 650 ℃, and discharged nitrous oxides decrease, the thermal efficiency are very high.
Existing radiation pipe burner tip heat exchanger is on structural design, it all is the preheating of air one-stroke, and all be preheating in the radiant tube pipe, at the exhaust gas temperature of radiant tube about 500-700 ℃, still have larger waste heat recovery space, can further improve air preheating temperature fully, reduce exhaust gas temperature, improve heat exchange temperature efficient and the thermal efficiency.
Summary of the invention
Technical problem to be solved in the utility model is the deficiency for above-mentioned existence, provide a kind of band air outlet slit jet flow to entrainment structure, improve air preheating temperature, reduce exhaust gas temperature, improve the triple-travel air preheat radiation pipe burner tip heat exchanger of heat exchange temperature efficient and the thermal efficiency.
The technical scheme that its technical problem that solves the utility model adopts is:
Triple-travel air preheat radiation pipe burner tip heat exchanger, its structure includes end part plug from right to left successively, the inner fins pipe, the porous jet pipe, baffle ring, intermediate conductor, the air-spray pipe, middle heat exchange conduit, flue gas flow guiding device, the abnormity flange, the extraneous air conduit, expansion joint, the center fin heat exchange pipe, the external heat-exchanging pipe, smoke outlet tube, the air blast pipe, it is characterized in that: heat exchanger is separated into built-in heat transfer zone and external heat transfer zone by special-shaped flange and expansion joint, wherein built-in heat transfer zone includes outermost inner fins pipe, two ends, the inner fins pipe left and right sides are connected with end part plug with middle heat exchange conduit respectively, inner fins pipe inboard is furnished with a plurality of porous jet pipes of different length, each porous jet pipe two ends all is furnished with baffle ring, porous jet pipe center is provided with intermediate conductor, and intermediate conductor is connected with the air-spray pipe.Described external heat transfer zone is followed successively by extraneous air conduit, external heat-exchanging pipe and center fin heat exchange pipe from outside to inside, be provided with expansion joint in the middle of the external heat transfer zone, it is divided into two strokes, the in the outer part termination of external heat-exchanging pipe is connected with smoke outlet tube, an extraneous air conduit in the inner part end also is connected with the air blast pipe, the center fin heat exchange pipe passes special-shaped flange and is connected with middle heat exchange conduit, and is provided with flue gas flow guiding device in the outside of its connecting portion.
In such scheme, flue gas flow guiding device is heat resisting steel hot investment casting moulding, 7 smoke deflectors of outer setting, and the size of deflector and radiant tube precision-fit play the effect of supporting the weight of heat exchanger own simultaneously.
In such scheme, the porous jet pipe is numerical control fine finishining moulding, the uniform 8-10 circle of tube wall surface layering 3-4mm annular distance, and the annular distance number can be adjusted according to the jet pipe diameter.
In such scheme, the inner fins pipe is heat resisting steel hot investment casting moulding, outer fin structure design, and fin is evenly arranged along the heat exchanger tube tube wall, adjusts every circle according to the heat exchanger tube diameter and arranges that 36-54 is not waited.
In such scheme, baffle ring adopts Precision Machining moulding, the accurate location of realizing porous jet pipe and finned tube and porous jet pipe and intermediate conductor by the accurate control to internal-and external diameter.
In such scheme, end part plug adopts water conservancy diversion shape structural design, and the hot investment casting moulding is fixed with fin heat exchange pipe by the continuous sealing welding.
In such scheme, the air-spray pipe adopts numerical control fine finishining moulding, by the accurate control of preheated air outlet is guaranteed reasonably to spray flow velocity.The air-spray pipe bend passes from middle conduit, and is positioned at the RC intermediate conductor of porous jet pipe and is welded and fixed.
In such scheme, special-shaped flange adopts corrosion resistant plate machine-shaping, and special-shaped flange is provided with gripper shoe, is provided with simultaneously to be connected with radiant tube to use installing hole, and special-shaped flange and smoke tube continuous welding are fixed;
In such scheme, the extraneous air conduit adopts seamless steel pipe machine-shaping, has exhanst gas outlet pore, air air intake pore on the conduit, and air blast pipe and extraneous air conduit are welded and fixed.
In such scheme, the external heat-exchanging pipe is stainless-steel seamless pipe machine-shaping, and two ends, the left and right sides are fixed with smoke outlet tube and special-shaped flange welding respectively, and the external heat-exchanging pipe is provided with support.
In such scheme, expansion joint adopts stainless steel to press the ripple moulding, 3-4 corrugated design, and both sides and extraneous air conduit are welded and fixed.
In such scheme, the center fin heat exchange pipe is stainless steel tube and fin designs for welding structure, stainless-steel pipe outside welding 4-8 bar fin, and finned tube is provided with plug and the import of one-level preheated air near smoke outlet, and right-hand member and flue gas flow guiding device are welded and fixed.
The beneficial effects of the utility model:
1, inside and outside displacement hot zone structure design has realized the triple-travel preheating of combustion air, has significantly improved air preheating temperature, and air preheating temperature can improve nearly 150 ℃;
2, external heat transfer zone two-pass preheated air, high temp. flue is positioned at the heat exchanger core, and the heat exchange surface temperature significantly reduces, and has effectively reduced radiation loss;
3, the design of flue gas flow guiding device imports external heat transfer zone central passage with inner tube smoke, realizes the two-pass heat exchange of external heat transfer zone inside and outside wall.
Description of drawings
Fig. 1 is the structural representation that the utility model is implemented;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the structural representation that external heat transfer zone air and the heat exchange of flue gas two-pass are implemented;
Fig. 4 is the structural representation that built-in heat transfer zone porous jet pipe and finned tube are used;
Fig. 5 is and main burner and the matching used structural representation of radiant tube.
Among the figure: the 1-end part plug, 2-inner fins pipe, the 3-baffle ring, 4-porous jet pipe, the 5-intermediate conductor,
6-air-spray pipe, the 7-flue gas flow guiding device, 8-abnormity flange, the 9-expansion joint, 10-extraneous air conduit,
The 11-smoke outlet tube, 12-external heat-exchanging pipe, 13-center fin heat exchange pipe, 14-air blast pipe,
15-radiation pipe burner tip heat exchanger, 16-radiant tube, 17-master's burner.
The specific embodiment
Below in conjunction with the specific embodiment, the utility model is further described:
Referring to Fig. 1 and Fig. 2, triple-travel air preheat band flue gas water conservancy diversion and entrainment structure radiation pipe burner tip heat exchanger, heat exchanger is divided into built-in heat exchange and two parts of external heat exchange.Built-in heat transfer zone partly comprises end part plug 1, adopts water conservancy diversion shape structural design, and the hot investment casting moulding is fixing with inner fins pipe 2 by the continuous sealing welding.Inner fins pipe 2 is heat resisting steel hot investment casting moulding, outer fin structure design, and fin is evenly arranged along the heat exchanger tube tube wall, adjusts every circle according to the heat exchanger tube diameter and arranges that 36-54 is not waited.Adopt continuous sealing to be welded and fixed between the inner fins pipe 2.Porous jet pipe 4 is numerical control fine finishining moulding, the uniform 8-10 circle of tube wall surface layering 3-4mm annular distance, and the annular distance number can be adjusted according to the jet pipe diameter.Air-spray pipe 6 adopts numerical control fine finishining moulding, by the accurate control of preheated air outlet is guaranteed reasonably to spray flow velocity.Air-spray pipe 6 ports of export are threaded with flue gas flow guiding device 7, the elbow end be positioned at porous jet pipe 4 RC intermediate conductors 5 and be welded and fixed.Flue gas flow guiding device 7 is heat resisting steel hot investment casting moulding, 7 smoke deflectors of outer setting, and the size of deflector and radiant tube 16 precision-fit play the effect of supporting the weight of heat exchanger own simultaneously.
Are connected with the inner fins pipe with special-shaped flange 8 respectively and are connected in flue gas flow guiding device 7 left and right sides, heat exchanger integral body is divided into intraductal heat exchange and two parts of heat transfer outside a tube.Abnormity flange 8 adopts the stainless-steel sheet machine-shapings, and special-shaped flange 8 is provided with gripper shoe, is provided with simultaneously to be connected with radiant tube 16 to use installing hole, and special-shaped flange 8 and 10 continuous weldings of extraneous air conduit are fixed.
External heat transfer zone comprises that partly extraneous air conduit 10 adopts seamless steel pipe machine-shaping, have exhanst gas outlet pore, air air intake pore, air blast pipe 14 is fixed with 10 continuous weldings of extraneous air conduit, and smoke outlet tube 11 penetrates with external heat-exchanging pipe 12 from the 10 reservation perforates of extraneous air conduit and is welded and fixed.Air conduit 10 is provided with expansion joint 9, and expansion joint 9 adopts stainless steel to press the ripple moulding, 3-4 corrugated design, and both sides and extraneous air conduit 10 are welded and fixed.External heat-exchanging pipe 12 is stainless-steel seamless pipe machine-shaping, and two ends, the left and right sides are welded and fixed with smoke outlet tube 11 and special-shaped flange 8 respectively, and 12 are provided with support on the external heat-exchanging pipe.External heat-exchanging pipe 12 centers are provided with center fin heat exchange pipe 13 and are stainless steel tube and fin designs for welding structure, stainless-steel pipe outside welding 4-8 bar fin, finned tube is provided with plug and the import of one-level preheated air near smoke outlet tube 11 ends, and right-hand member and flue gas flow guiding device 7 are welded and fixed.
Fig. 3 has provided the structural representation of the enforcement of external heat transfer zone air and the heat exchange of flue gas two-pass.Formed the main air passage between extraneous air conduit 10 and the external heat-exchanging pipe 12, formed external exhaust gases passes between external heat-exchanging pipe 12 and the center fin heat exchange pipe 13, fin heat exchange pipe 13 inside in center have formed the secondary air passage.Combustion air enters from air blast pipe 14, carry out heat exchange along the main air passage by external heat-exchanging pipe 12 and flue gas, turn back behind arrival extraneous air conduit 10 terminations and enter the secondary air passage, and finish secondary heat exchange by center fin heat exchange pipe 13 and flue gas.Heat exchange air later enters built-in heat transfer zone along center fin heat exchange pipe 13 by flue gas flow guiding device 7 and carries out heat exchange.
Embodiment when Fig. 4 has provided the partially porous jet pipe of built-in heat transfer zone 4 and is used with inner fins pipe 2.Inner fins pipe 2 forms exhaust gases passes with radiant tube 16 inwalls, and porous jet pipe 4 forms the multi-stage heat exchanger passage by the iris action of baffle ring 3 between inner fins pipe 2 and intermediate conductor 5.Radiation burning flue gas later forms adverse current along inner fins pipe 2 outer walls and inboard air.Combustion air through external heat transfer zone preheating flows into along circumferential weld between middle heat exchange conduit 7 and the porous jet pipe 4, be subject to the obstruct of baffle ring 3, air passes through porous jet pipe 4 high velocity jet to inner fins pipe 2 inner surfaces, carry out heat exchange with inner fins pipe 2 outside flue gases, enter the next stage jet pipe after heat exchange is finished, porous jet pipe 4 is level Four altogether, length increases step by step, after heat exchange was finished, preheated air returned along intermediate conductor 5, from 6 ejections of air-spray pipe.
The embodiment of heat exchanger when Fig. 5 has provided and supported the use with main burner 17 and radiant tube 16.Heat exchanger abnormity flange 8 is connected with radiant tube 16 heat exchanger sides, and main burner 17 is connected with radiant tube 16 opposite sides by bolt.Inner fins pipe 2 forms exhaust gases passes with radiant tube 16 inwalls, and air-spray pipe 6 outer rims and radiant tube 16 outer walls form the smoke backflow passage, and main burner 17 forms combustion air and entrainments the flue gas hybrid channel with radiant tube 16 inwalls.Combustion air enters from air blast pipe 14, enter after external heat transfer zone finishes the one-level heat exchange by extraneous air conduit 10, finish secondary heat exchange by center fin heat exchange pipe 13 and flue gas, enter afterwards built-in heat transfer zone part, be ejected at a high speed inner fins pipe 2 inner surfaces after entering intermediate conductor 5 and porous jet pipe 4 gaps by flue gas flow guiding device 7, after finishing three grades of heat exchange with flue gas, process end part plug 1 returns and enters intermediate conductor 5 inflow air-spray pipes 6, and spray at a high speed by flow jeting port, enter radiant tube 16 combustion air conduits after the negative pressure that utilize to spray forms is entrainmented backflow to flue gas, and burn after finishing mixing by the air duct of combustion air conduit and main burner 17.The flue gas that produces of burning is then successively by end part plug 1, inner fins pipe 2, flue gas flow guiding device 7, center fin heat exchange pipe 13, discharges from smoke outlet tube 11 after finishing the triple-travel heat exchange with air.
The above, it only is the preferred embodiment of this utility model, be not that utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of the present utility model any simple modification, equivalent variations and modification that above embodiment does.
Claims (10)
1. triple-travel air preheat radiation pipe burner tip heat exchanger, its structure includes end part plug from right to left successively, the inner fins pipe, the porous jet pipe, baffle ring, intermediate conductor, the air-spray pipe, middle heat exchange conduit, flue gas flow guiding device, the abnormity flange, the extraneous air conduit, expansion joint, the center fin heat exchange pipe, the external heat-exchanging pipe, smoke outlet tube, the air blast pipe, it is characterized in that: heat exchanger is separated into built-in heat transfer zone and external heat transfer zone by special-shaped flange and expansion joint, wherein built-in heat transfer zone includes outermost inner fins pipe, two ends, the inner fins pipe left and right sides are connected with end part plug with middle heat exchange conduit respectively, inner fins pipe inboard is furnished with a plurality of porous jet pipes of different length, each porous jet pipe two ends all is furnished with baffle ring, porous jet pipe center is provided with intermediate conductor, intermediate conductor is connected with the air-spray pipe, described external heat transfer zone is followed successively by the extraneous air conduit from outside to inside, external heat-exchanging pipe and center fin heat exchange pipe, be provided with expansion joint in the middle of the external heat transfer zone, it is divided into two strokes, the in the outer part termination of external heat-exchanging pipe is connected with smoke outlet tube, an extraneous air conduit in the inner part end also is connected with the air blast pipe, the center fin heat exchange pipe passes special-shaped flange and is connected with middle heat exchange conduit, and is provided with flue gas flow guiding device in the outside of its connecting portion.
2. triple-travel air preheat radiation pipe burner tip heat exchanger as claimed in claim 1, it is characterized in that: flue gas flow guiding device is heat resisting steel hot investment casting moulding, many smoke deflectors of outer setting, the size of deflector and radiant tube coupling.
3. triple-travel air preheat radiation pipe burner tip heat exchanger as claimed in claim 1, it is characterized in that: the porous jet pipe is numerical control fine finishining moulding, the uniform 8-10 circle of tube wall surface layering 3-4mm annular distance.
4. triple-travel air preheat radiation pipe burner tip heat exchanger as claimed in claim 1 is characterized in that: the inner fins pipe is the outer fin structure design of heat resisting steel hot investment casting moulding, and fin is evenly arranged along the heat exchanger tube tube wall, and every circle is arranged 36-54.
5. triple-travel air preheat radiation pipe burner tip heat exchanger as claimed in claim 1, it is characterized in that: the air-spray pipe is elbow structure, and the air-spray pipe bend passes from middle conduit, and is positioned at the RC intermediate conductor of porous jet pipe and is welded and fixed.
6. triple-travel air preheat radiation pipe burner tip heat exchanger as claimed in claim 1 is characterized in that: special-shaped flange adopts stainless-steel sheet machine-shaping, and special-shaped flange is provided with gripper shoe, is provided with simultaneously to be connected with radiant tube to use installing hole.
7. triple-travel air preheat radiation pipe burner tip heat exchanger as claimed in claim 1, it is characterized in that: the extraneous air conduit adopts seamless steel pipe machine-shaping, have exhanst gas outlet pore, air air intake pore on the conduit, air blast pipe and extraneous air conduit are welded and fixed.
8. triple-travel air preheat radiation pipe burner tip heat exchanger as claimed in claim 1, it is characterized in that: the external heat-exchanging pipe is stainless-steel seamless pipe machine-shaping, two ends, the left and right sides are fixed with smoke outlet tube and special-shaped flange welding respectively, and the external heat-exchanging pipe is provided with support.
9. triple-travel air preheat radiation pipe burner tip heat exchanger as claimed in claim 1 is characterized in that: expansion joint adopts stainless steel to press ripple to be shaped to 3-4 ripple, and both sides and extraneous air conduit are welded and fixed.
10. triple-travel air preheat radiation pipe burner tip heat exchanger as claimed in claim 1, it is characterized in that: the center fin heat exchange pipe is stainless steel tube and fin designs for welding structure, stainless-steel pipe outside welding 4-8 bar fin, the center finned tube is provided with plug and the import of one-level preheated air near smoke outlet, and right-hand member and flue gas flow guiding device are welded and fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203176261U CN202884969U (en) | 2012-07-03 | 2012-07-03 | Triple-travel air preheating radiant tube nozzle heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203176261U CN202884969U (en) | 2012-07-03 | 2012-07-03 | Triple-travel air preheating radiant tube nozzle heat exchanger |
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| Publication Number | Publication Date |
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| CN202884969U true CN202884969U (en) | 2013-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203176261U Expired - Fee Related CN202884969U (en) | 2012-07-03 | 2012-07-03 | Triple-travel air preheating radiant tube nozzle heat exchanger |
Country Status (1)
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| CN (1) | CN202884969U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818268A (en) * | 2012-07-03 | 2012-12-12 | 中冶南方(武汉)威仕工业炉有限公司 | Triple-stroke air-preheating radiant tube burner heat exchanger |
| CN110864320A (en) * | 2019-10-31 | 2020-03-06 | 杭州中景科技有限公司 | Forced self-smoke-exhausting compact preheater |
-
2012
- 2012-07-03 CN CN2012203176261U patent/CN202884969U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818268A (en) * | 2012-07-03 | 2012-12-12 | 中冶南方(武汉)威仕工业炉有限公司 | Triple-stroke air-preheating radiant tube burner heat exchanger |
| CN110864320A (en) * | 2019-10-31 | 2020-03-06 | 杭州中景科技有限公司 | Forced self-smoke-exhausting compact preheater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20150703 |
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| EXPY | Termination of patent right or utility model |