CN204402628U - A kind of circulating water cooling type urea injection device for SCR exhaust gas aftertreatment system - Google Patents
A kind of circulating water cooling type urea injection device for SCR exhaust gas aftertreatment system Download PDFInfo
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- CN204402628U CN204402628U CN201420813421.1U CN201420813421U CN204402628U CN 204402628 U CN204402628 U CN 204402628U CN 201420813421 U CN201420813421 U CN 201420813421U CN 204402628 U CN204402628 U CN 204402628U
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Abstract
The utility model relates to a kind of circulating water cooling type urea injection device for SCR exhaust gas aftertreatment system, comprises urea injection device, heat-proof device and circulating water cooling device; The structures shape of the utility model urea injection device nozzle is easy to change and install more; Heat shield, heat shield have carried out effective obstruct to the thermal radiation from outlet pipe, reduce thermal radiation to the direct effect of this circulating water cooling type urea injection device; The cooling water that described circulating water cooling device uses takes from cycle of engine cooling water intake front end branch road; Cooling water can well to be taken away on circulating water cooling type urea injection device and to come from the heat of nozzle interior, reduces nozzle interior temperature, ensure that nozzle reliability of operation, extends nozzle working life.
Description
Technical field
The utility model relates to Purification of IC Exhaustive Gas processing technology field, particularly relates to a kind of self-loopa cooling type urea injection device for SCR (Selective Catalytic Reduction selective catalytic reduction technology) exhaust gas aftertreatment system.
Background technique
In prior art, containing a large amount of particulate matters in the exhaust of internal-combustion engine especially diesel engine, (PM, Particulate Matter refers to the solid in air or liquid particles shape material) and nitrogen oxide, cause severe contamination to atmosphere environment; This does not meet the regulation of environmental protection relevant laws and regulations that is existing and that will promulgate from now on.
In prior art, there is a shortcoming in the method for I. C. engine exhaust process, namely cannot realize the purified treatment of PM and nitrogen oxide simultaneously, mutually conflict therebetween; Such as, adopt gas recirculation system (EGR, Exhaust Gas Recycle, in the gas that internal-combustion engine is discharged after combustion, oxygen content is extremely low or even do not have, oxygen concentration in air-breathing can be made after this Exhaust Gas mixes with air-breathing to reduce, therefore following phenomenon can be produced: the oxygen content lower than air (the highest) temperature when burning can reduce, and can suppress the generation of nitrogen oxide (NOx); When combustion temperature reduces, the heat energy of cylinder and combustion chamber wall surface, piston face is dispersed and can be reduced, and the loss caused because of thermal dissociation in addition also has and slightly reduces; In order to provide the amount of oxygen of equivalent (in order to obtain exerting oneself of same axle) during its sub load of fuel oil engine non-EGR inherent for cylinder, therefore need throttle to be opened greatly, oil suction (throttle) loss during result air-breathing is lower, rate of fuel consumption rate can improve) technology purified treatment I. C. engine exhaust, although the content that can realize nox in exhaust significantly reduces, but the content of PM raises on the contrary in exhaust, and fuel cost improves; Adopt high compression injection techniques purified treatment I. C. engine exhaust, be conducive to the content reducing PM in exhaust, but often make the content of nox in exhaust raise.
In recent years, technician starts again to pay close attention to internal-combustion engine HCCI (HomogeneousCharge Compression Ignition homogeneous charge compression ignite technology, the technical pattern more complicated than general motor (comparing those " classics " motors) of the motor of equipment HCCI technology, at the end of the compression stroke of petrol engine is fast, gasoline is by straight oil injecting nozzle spirt cylinder, hcci engine compression ratio is higher than common petrol engine, so the little oil droplet of ejection forms uniform distribution if having time when compression stroke completes in cylinder, at this moment the pressure of cylinder enough makes the automatic compression ignite of equally distributed oil droplet, all fuel is lighted all at one time, so improve fuel oil utilization efficiency (traditional gasoline and diesel engine be all spreading type heterogeneous burning, the energy of part is wasted while diffusion) and because its adopts the cause of compressing ignition, quite thin mixed gas can be adopted, therefore can according to the mode of rotten adjustment, directly by regulating fuel injection quantity to regulate moment of torsion, do not need closure, the combustion temperature of hcci engine is low, very low to the heat transfer of chamber wall, photothermal transmission can be reduced, significantly can also reduce the formation of oxynitrides), wish the content simultaneously reducing PM and nitrogen oxide in internal-combustion engine, but the condition range that HCCI technology is suitable for is limited, engine mode switching controls is complicated, and reduces the DeGrain of PM and amount of nitrogen oxides in exhaust.
Along with the enhancing that the mankind realize atmosphere protection, the environmental protection relevant laws and regulations of promulgating successively both at home and abroad are progressively tending towards severization, and to this, technician has to adopt post-processing technology to carry out purified treatment internal combustion exhaust.
The basic principle of SCR post-processing technology is injected fuel or add reducing agent in addition in internal combustion engine exhaust, utilize suitable catalyzer to impel reducing agent and nitrogen oxide generation chemical reaction to generate nitrogen (N2), suppress the non-selective oxidation of reducing agent and oxygen to react simultaneously; Such as, during the SCR post-processing technology process being reducing agent with ammonia (NH3) exhaust, the main chemical reactions of generation is as follows:
4NH3+4NO+O2→4N2+6H2O；
2NH3+NO+NO2→2N2+3H2O；
8NH3+6NO2→7N2+12H2O；
2NO2+2NH3→NH4NO3+N2+H2O。
Because ammonia has higher corrosivity, storage and the transport of liquefied ammonia and ammoniacal liquor are all very difficult, and thus ammonia can not be directly used in vehicle-mounted SCR after-treatment system.
For the above-mentioned defect of ammonia as reducing agent, technician adopts aqueous solution of urea to provide reducing agent usually; Practice shows, concentration be 32.5% aqueous solution of urea there is minimum solidifying point, its solidifying point is-11 DEG C, therefore the aqueous solution of urea that generally employing concentration is 32.5% in the world provides the reducing agent of SCR post-processing technology, and by its called after AdBlue, (diesel engine vent gas treatment fluid, is domesticly commonly called as automobile urea, urea for vehicle, automobile environment-protection urea is the article of consumption must used in SCR technology; Its constituent is high-purity urea of 32.5% and the deionized water of 67.5%).
Adopt SCR post-processing technology purified treatment I. C. engine exhaust, if adopt aqueous solution of urea to provide reducing agent, need aqueous solution of urea to spray to exhaust; When spraying aqueous solution of urea in exhaust, need to consider the factors such as the leakage rate of the concentration of nitrogen oxide, the working condition of catalyzer and ammonia; Particularly, when spraying aqueous solution of urea in exhaust, need the requirement of the emitted dose accurately controlling aqueous solution of urea, make ammonia the highest 25ppm of being no more than of leakage rate, be on average no more than 10ppm condition under, the transformation efficiency of nitrogen oxide is the highest.
Therefore, concerning SCR post-processing technology, the cooling of the accurate measurement and urea injection device that how to realize aqueous solution of urea becomes technician's technical problem urgently to be resolved hurrily.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of circulating water cooling type urea injection device for SCR exhaust gas aftertreatment system, and the structures shape of its urea injection device nozzle is easy to change and install more; Urea liquid chamber can reduce the impact of the pressure in injection line to nozzle interior; Heat shield, heat shield have carried out effective obstruct to the thermal radiation from outlet pipe, reduce thermal radiation to the direct effect of this circulating water cooling type urea injection device; The heat-insulation chamber that heat shield and nozzle carrier protuberance are formed serves further heat-blocking action; The jetburner of half shading type effectively reduces the exposed area of nozzle ejection end in high-temperature exhaust air, then reduces high-temperature exhaust air and scorches degree to nozzle ejection end, extend the working life of nozzle and the reliability of whole injecting systems; The cooling water that described circulating water cooling device uses takes from cycle of engine cooling water intake front end branch road; Cooling water can well to be taken away on circulating water cooling type urea injection device and to come from the heat of nozzle interior, reduces nozzle interior temperature, ensure that nozzle reliability of operation, extends nozzle working life.
For solving the problems of the technologies described above, the utility model adopts following technical proposals: a kind of circulating water cooling type urea injection device for SCR exhaust gas aftertreatment system, and described self-loopa cooling type urea injection device comprises urea injection device, heat-proof device and circulating water cooling device;
Described urea injection device comprises nozzle carrier, nozzle, cap of spraying nozzle and urea liquid chamber; Nozzle is fixed in nozzle carrier, and is sealed by the inwall of the first jet O-ring seals that carries and nozzle heat resistant joint ring and nozzle carrier, forms cooling chamber; Described cap of spraying nozzle installs fixed nozzle seat top, and upper end of nozzle is inserted in cap of spraying nozzle, and nozzle is sealed with the inside of cap of spraying nozzle by the second nozzle O-ring seals carried, formation urea liquid chamber;
Described heat-proof device comprises the jetburner of heat shield, heat shield, heat-insulation chamber and half shading type; Described heat shield is fixed on the flange plate upper surface at nozzle carrier back; Described heat shield is enclosed within the lower protuberance of nozzle carrier, and is welded and fixed at the position contacted with nozzle carrier, forms the heat-insulation chamber of semitight under heat shield and nozzle carrier between protuberance; The jetburner of described half shading type is formed by nozzle carrier lower end and heat shield lower end, and the jetburner of half shading type is inner towards outlet pipe;
Described circulating water cooling device comprises nozzle carrier, the first rapid pipe joint, the second rapid pipe joint, cooling chamber, cooling water liquid inlet channel, the first cooling water flow conduits, cooling water backflow road, the second cooling water flow conduits, the first rapid pipe joint O shape rubber seal and the second rapid pipe joint O shape rubber seal; Described first rapid pipe joint and the second rapid pipe joint are fixed on nozzle carrier respectively, first rapid pipe joint seals fixing by the first rapid pipe joint O shape rubber seal and nozzle carrier, the second rapid pipe joint seals fixing by the second rapid pipe joint O shape rubber seal and nozzle carrier; Described cooling water liquid inlet channel is positioned at the first rapid pipe joint, and cooling water backflow road is positioned at the second rapid pipe joint, and the first cooling water flow conduits, the second cooling water flow conduits are positioned at nozzle carrier, is communicated with cooling water liquid inlet channel, cooling water backflow road and cooling chamber respectively.
Described heat-proof device also comprises high temperature resistant heat insulation seal washer, and described high temperature resistant heat insulation seal washer is placed on nozzle carrier lower plane.
Described heat-proof device also comprises heat insulating coat, and described heat insulating coat brushing is on the outer surface of heat shield.
The utility model has following beneficial effect:
The urea injection device of described circulating water cooling type urea injection device includes nozzle carrier, nozzle, cap of spraying nozzle, urea liquid chamber, and the assembling mode of three determines nozzle and is more easy to change and install; Urea liquid chamber can reduce the impact of the pressure in injection line to nozzle interior;
Described heat-proof device includes the jetburner of heat shield, heat shield, heat-insulation chamber, heat insulating coat, high temperature resistant heat insulation seal washer and half shading type; Heat shield, heat shield have carried out effective obstruct to the thermal radiation from outlet pipe, reduce thermal radiation to the direct effect of this circulating water cooling type urea injection device; Brushing has well intercepted from the thermal radiation of high-temperature exhaust air to heat shield at the heat insulating coat of heat shield outer surface; The heat-insulation chamber that heat shield and nozzle carrier protuberance are formed serves further heat-blocking action; High temperature resistant heat insulation packing ring intercepts effectively, reduce the direct heat transfer of outlet pipe to this circulating water cooling type urea injection device; The jetburner of half shading type effectively reduces the exposed area of nozzle ejection end in high-temperature exhaust air, then reduce high-temperature exhaust air and degree is scorched to nozzle ejection end, generally speaking, insulating portion has carried out good thermal insulation protection to this circulating water cooling type urea injection device, extends the working life of nozzle and the reliability of whole injecting systems;
Described circulating water cooling device is implemented in nozzle carrier inside, and use rapid pipe joint to be connected with exterior line, it has cooling chamber and two cooling water flow conduits, and rapid pipe joint uses O shape rubber seal and nozzle carrier to carry out effective sealing; Its cooling water used takes from cycle of engine cooling water intake front end branch road; Cooling water can well to be taken away on circulating water cooling type urea injection device and to come from the heat of nozzle interior, reduces nozzle interior temperature, ensure that nozzle reliability of operation, extends nozzle working life.
Accompanying drawing explanation
Fig. 1 illustrates the main TV structure schematic diagram of the utility model;
Fig. 2 illustrates that the A-A of the utility model Fig. 1 is to plan structure schematic diagram;
Fig. 3 illustrates that the B-B of the utility model Fig. 1 is to sectional structure schematic diagram;
Fig. 4 illustrates that the C-C of the utility model Fig. 2 is to sectional structure schematic diagram;
Fig. 5 illustrates that the D-D of the utility model Fig. 2 is to sectional structure schematic diagram;
Fig. 6 illustrates the utility model overall structure schematic diagram;
Fig. 7 illustrates utility model works theory structure schematic diagram 1;
Fig. 8 illustrates utility model works theory structure schematic diagram 2.
Embodiment
Embodiment 1
Shown in Fig. 1-Fig. 6, a kind of circulating water cooling type urea injection device for SCR exhaust gas aftertreatment system, described self-loopa cooling type urea injection device comprises urea injection device 10, heat-proof device 20 and circulating water cooling device 30;
Described urea injection device 10 comprises nozzle carrier 101, nozzle 102, cap of spraying nozzle 103 and urea liquid chamber 104; Nozzle 102 is fixed in nozzle carrier 101, and is sealed with the inwall of nozzle carrier 101 by the first jet O-ring seals 1021 that carries and nozzle heat resistant joint ring 1022, forms cooling chamber; Described cap of spraying nozzle 103 installs fixed nozzle seat 101 top, and nozzle 102 upper end is inserted in cap of spraying nozzle 103, and nozzle 102 is sealed with the inside of cap of spraying nozzle 103 by the second nozzle O-ring seals 1023 carried, and forms urea liquid chamber 104;
Described heat-proof device 20 comprises the jetburner 204 of heat shield 201, heat shield 202, heat-insulation chamber 203 and half shading type; Described heat shield 201 is fixed on flange plate 1011 upper surface at nozzle carrier 101 back; Described heat shield 202 is enclosed within the lower protuberance 1012 of nozzle carrier 101, and is welded and fixed at the position contacted with nozzle carrier 101, forms the heat-insulation chamber 203 of semitight between heat shield 202 and nozzle carrier 101 times protuberances 1012; The jetburner 204 of described half shading type is formed by nozzle carrier 101 lower end and heat shield 202 lower end;
Described circulating water cooling device 30 comprises nozzle carrier 101, first rapid pipe joint 301, second rapid pipe joint 302, cooling chamber 303, cooling water liquid inlet channel 304, first cooling water flow conduits 305, cooling water backflow road 306, second cooling water flow conduits 307, first rapid pipe joint O shape rubber seal 308 and the second rapid pipe joint O shape rubber seal 309; Described first rapid pipe joint 301 and the second rapid pipe joint 302 are fixed on nozzle carrier 101 respectively, first rapid pipe joint 301 seals fixing by the first rapid pipe joint O shape rubber seal 308 and nozzle carrier 101, and the second rapid pipe joint 302 seals fixing by the second rapid pipe joint O shape rubber seal 309 and nozzle carrier 101; Described cooling water liquid inlet channel 304 is positioned at the first rapid pipe joint 301, cooling water backflow road 306 is positioned at the second rapid pipe joint 302, first cooling water flow conduits 305, second cooling water flow conduits 307 is positioned at nozzle carrier 101, is communicated with cooling water liquid inlet channel 304, cooling water backflow road 306 and cooling chamber 303 respectively.
Described heat-proof device 20 also comprises high temperature resistant heat insulation seal washer 205, and described high temperature resistant heat insulation seal washer 205 is placed on nozzle carrier 101 lower plane.
Described heat-proof device 20 also comprises heat insulating coat 206, and described heat insulating coat 206 is brushed on the outer surface of heat shield 202.
Working principle
Shown in Fig. 1-Fig. 8, a kind of circulating water cooling type urea injection device for SCR exhaust gas aftertreatment system is fixed between SCR catalyst 80 front end and engine exhaust port 40, and on the gas exhaust piping of engine exhaust port 40 one end, the lower protuberance of this self-loopa cooling type urea injection device is deep into the injection arm 401 be positioned in Engine exhaust pipeline, and jetburner 204 is inner towards outlet pipe;
When SCR system is opened, the cooling water liquid inlet channel 304 being positioned at the first rapid pipe joint 301 is entered by cooling water intake II from being positioned at the intake cooling water of import front end branch road of cycle of engine cooling water system 50, cooling chamber 303 is injected by the first cooling water flow conduits 305, flow into the cooling water backflow road 306 being positioned at the second rapid pipe joint 302 via the second cooling water flow conduits 307 after filling cooling chamber 303, and flow out from coolant outlet III, be back to cycle of engine cooling water system 50 to intake inlet ductwork, complete primary cooling water cyclic process; To inject via urea liquid import I from the urea liquid of urea pump 60 and seal by cap of spraying nozzle 103 and nozzle 102 the urea liquid chamber 104 formed, and urea liquid chamber 104 and nozzle 102 inside are filled;
Be installed on the heat shield 201 at nozzle carrier 101 back for stopping from engine exhaust pipe scorching circulating water cooling type urea injection device; The heat shield 202 being enclosed within nozzle carrier 101 times protuberances is welded and fixed by the position that contacts with nozzle carrier 101 the heat-insulation chamber 203 defining a half airtight, in order to stop high-temperature exhaust air the scorching protuberance under circulating water cooling type urea injection device from injection arm 401 inside be positioned in Engine exhaust pipeline, evenly the heat insulating coat 206 of brushing on heat shield 202 outer surface is in order to reduce the heat transfer of high-temperature exhaust air to heat shield 202; Be placed in high temperature resistant heat insulation seal washer 205 on flange plate 1011 lower plane of nozzle carrier 101 for circulating water cooling type urea injection device and spraying the sealing between the adpting flange on arm, prevent from being vented the high temperature revealed and intercept self-injection arm; Nozzle carrier 101 lower end and heat shield 202 lower end define the jetburner 204 of half shading type, reduce the exposed area of nozzle 102 ejection end in high-temperature exhaust air, then reduce high-temperature exhaust air and scorch degree to nozzle 102 ejection end;
When system runs without interruption, from the cooling being positioned at cooling water that cycle of engine cooling water system 50 intakes import front end branch road and continuing circulating water cooling type urea injection device, when injection line internal pressure rises to setting pressure, external control system 70 opens nozzle 102, carries out urea injection action by nozzle 102 ejection end of jetburner 204 inside being positioned at half shading type to Engine exhaust pipeline inside.
As mentioned above; a kind of circulating water cooling type urea injection device for SCR exhaust gas aftertreatment system of the utility model; described embodiment and figure; the just good implementation result of the utility model; be not be confined to the utility model; approximate, the identical person such as structure every and of the present utility model, feature, all should belong to the scope of the utility model protection.
Claims (3)
1., for a circulating water cooling type urea injection device for SCR exhaust gas aftertreatment system, described self-loopa cooling type urea injection device comprises urea injection device (10), heat-proof device (20) and circulating water cooling device (30); It is characterized in that:
Described urea injection device (10) comprises nozzle carrier (101), nozzle (102), cap of spraying nozzle (103) and urea liquid chamber (104); Nozzle (102) is fixed in nozzle carrier (101), and sealed with the inwall of nozzle carrier (101) by the first jet O-ring seals (1021) that carries and nozzle heat resistant joint ring (1022), form cooling chamber; Described cap of spraying nozzle (103) installs fixed nozzle seat (101) top, nozzle (102) upper end is inserted in cap of spraying nozzle (103), nozzle (102) is sealed with the inside of cap of spraying nozzle (103) by the second nozzle O-ring seals (1023) carried, and forms urea liquid chamber (104);
Described heat-proof device (20) comprises the jetburner (204) of heat shield (201), heat shield (202), heat-insulation chamber (203) and half shading type; Described heat shield (201) is fixed on flange plate (1011) upper surface at nozzle carrier (101) back; Described heat shield (202) is enclosed within the lower protuberance (1012) of nozzle carrier (101), and be welded and fixed at the position contacted with nozzle carrier (101), form the heat-insulation chamber (203) of semitight under heat shield (202) and nozzle carrier (101) between protuberance (1012); The jetburner (204) of described half shading type is formed by nozzle carrier (101) lower end and heat shield (202) lower end;
Described circulating water cooling device (30) comprises nozzle carrier (101), the first rapid pipe joint (301), the second rapid pipe joint (302), cooling chamber (303), cooling water liquid inlet channel (304), the first cooling water flow conduits (305), cooling water backflow road (306), the second cooling water flow conduits (307), the first rapid pipe joint O shape rubber seal (308) and the second rapid pipe joint O shape rubber seal (309); Described first rapid pipe joint (301) and the second rapid pipe joint (302) are fixed on nozzle carrier (101) respectively, first rapid pipe joint (301) seals fixing by the first rapid pipe joint O shape rubber seal (308) and nozzle carrier (101), the second rapid pipe joint (302) seals fixing by the second rapid pipe joint O shape rubber seal (309) and nozzle carrier (101); Described cooling water liquid inlet channel (304) is positioned at the first rapid pipe joint (301), cooling water backflow road (306) is positioned at the second rapid pipe joint (302), first cooling water flow conduits (305), the second cooling water flow conduits (307) are positioned at nozzle carrier (101), are communicated with cooling water liquid inlet channel (304), cooling water backflow road (306) and cooling chamber (303) respectively.
2. a kind of circulating water cooling type urea injection device for SCR exhaust gas aftertreatment system according to claim 1, it is characterized in that: described heat-proof device (20) also comprises high temperature resistant heat insulation seal washer (205), described high temperature resistant heat insulation seal washer (205) is placed on nozzle carrier (101) lower plane.
3. a kind of circulating water cooling type urea injection device for SCR exhaust gas aftertreatment system according to claim 1, it is characterized in that: described heat-proof device (20) also comprises heat insulating coat (206), described heat insulating coat (206) brushing is on the outer surface of heat shield (202).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420813421.1U CN204402628U (en) | 2014-10-22 | 2014-12-18 | A kind of circulating water cooling type urea injection device for SCR exhaust gas aftertreatment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2014206144774 | 2014-10-22 | ||
| CN201420614477 | 2014-10-22 | ||
| CN201420813421.1U CN204402628U (en) | 2014-10-22 | 2014-12-18 | A kind of circulating water cooling type urea injection device for SCR exhaust gas aftertreatment system |
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| Publication Number | Publication Date |
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| CN204402628U true CN204402628U (en) | 2015-06-17 |
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| CN201420813421.1U Expired - Fee Related CN204402628U (en) | 2014-10-22 | 2014-12-18 | A kind of circulating water cooling type urea injection device for SCR exhaust gas aftertreatment system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065094A (en) * | 2015-08-12 | 2015-11-18 | 清华大学苏州汽车研究院（吴江） | SCR urea nozzle cooling and fixing device |
| CN106168150A (en) * | 2016-09-14 | 2016-11-30 | 无锡威孚高科技集团股份有限公司 | Nozzle coolant jacket structure |
| GB2539888A (en) * | 2015-06-29 | 2017-01-04 | Delphi Int Operations Luxembourg Sarl | Reductant injector cooling system |
| CN107701271A (en) * | 2017-10-31 | 2018-02-16 | 凯龙高科技股份有限公司 | A kind of metering injector of the spliced cooling jacket of band |
| CN108194171A (en) * | 2017-12-28 | 2018-06-22 | 广西卡迪亚科技有限公司 | A kind of urea measures valve assembly |
| CN114060126A (en) * | 2021-11-08 | 2022-02-18 | 凯龙高科技股份有限公司 | Urea metering and spraying device |
-
2014
- 2014-12-18 CN CN201420813421.1U patent/CN204402628U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2539888A (en) * | 2015-06-29 | 2017-01-04 | Delphi Int Operations Luxembourg Sarl | Reductant injector cooling system |
| CN105065094A (en) * | 2015-08-12 | 2015-11-18 | 清华大学苏州汽车研究院（吴江） | SCR urea nozzle cooling and fixing device |
| CN106168150A (en) * | 2016-09-14 | 2016-11-30 | 无锡威孚高科技集团股份有限公司 | Nozzle coolant jacket structure |
| CN107701271A (en) * | 2017-10-31 | 2018-02-16 | 凯龙高科技股份有限公司 | A kind of metering injector of the spliced cooling jacket of band |
| CN108194171A (en) * | 2017-12-28 | 2018-06-22 | 广西卡迪亚科技有限公司 | A kind of urea measures valve assembly |
| CN114060126A (en) * | 2021-11-08 | 2022-02-18 | 凯龙高科技股份有限公司 | Urea metering and spraying device |
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Effective date of registration: 20151119 Address after: 075000 Zhangjiakou City, Hebei Province Xishan industry cluster zone Konglu Shen North Patentee after: Zhangjiakou Baitong Environmental & Technology Co., Ltd. Patentee after: Zhangjiakou General Machinery Co., Ltd. Address before: 075000 Zhangjiakou City, Hebei Province Xishan industry cluster zone Konglu Shen North Patentee before: Zhangjiakou Baitong Environmental & Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150617 Termination date: 20181218 |
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| CF01 | Termination of patent right due to non-payment of annual fee |