CN106121791A - A kind of interior heating urea tubular construction for SCR system - Google Patents
A kind of interior heating urea tubular construction for SCR system Download PDFInfo
- Publication number
- CN106121791A CN106121791A CN201610729785.5A CN201610729785A CN106121791A CN 106121791 A CN106121791 A CN 106121791A CN 201610729785 A CN201610729785 A CN 201610729785A CN 106121791 A CN106121791 A CN 106121791A
- Authority
- CN
- China
- Prior art keywords
- urea
- wire
- heating
- linkage section
- scr system
- 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.)
- Pending
Links
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 100
- 239000004202 carbamide Substances 0.000 title claims abstract description 61
- 238000010438 heat treatment Methods 0.000 title claims abstract description 54
- 238000010276 construction Methods 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 11
- 239000004809 Teflon Substances 0.000 claims description 3
- 229920006362 Teflon® Polymers 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 235000013877 carbamide Nutrition 0.000 description 39
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
- F01N3/2013—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/14—Nitrogen oxides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pipe Accessories (AREA)
- Resistance Heating (AREA)
Abstract
The invention discloses a kind of interior heating urea tubular construction for SCR system, it includes snap joint, urea pipe and heater wire, urea liquid passage it is provided with in described snap joint, and its one end is provided with linkage section, the end of described linkage section connects urea pipe, wherein, middle part in described linkage section is arranged at intervals with two-layer and cuts off, and offer wire hole on the sidewall of described linkage section, described heater wire is installed in described urea pipe, and the heater strip in described heater wire drawn by wire hole, heating wire rod in described heater strip is helically wound around on described linkage section, described heating wire rod connects wire, described wire connects heating power supply by connector.Above-mentioned heating arrangement in the interior heating urea tubular construction employing of SCR system, is not only simple in structure compact, it is simple to processing, can realize effectively production and assembling；And improve the efficiency of heating surface of pipeline.
Description
Technical field
The invention belongs to urea tube heating technique, especially relate to a kind of interior heating urea tubular construction for SCR system.
Background technology
Refer to be arranged on for selective catalytic conversion system of diesel engine SCR (SelectiveCatalystReduction)
In diesel engine automobile air exhausting system, the NOx in diesel emission is catalysed and reduced into the catalytic reduction device of N2 and O2, selects carbamide
Aqueous solution is as reducing agent.Aqueous solution of urea is ejected in the exhaustor of catalyst upstream, in EGT and the effect of air-flow
Lower hydrolysis is produced as CO2And ammonia, NOx is reduced into free of contamination nitrogen and water as reducing agent by ammonia.
Based on SCR diesel engine use carbamide be additive, the characteristic of carbamide be under ambient pressure-11 DEG C time icing, for
Guarantee northern area can normally use, it is necessary to carbamide carries out heating and thaws, ensureing the normal liquid fluidity of carbamide.
In the prior art, common Urea defrosting strategy has two kinds, heats for electrical heating and engine cooling water.Two kinds of heating
Defrosting strategy is respectively arranged with pluses and minuses, and electric heating system is arranged simple, and the efficiency of heating surface is higher, but price is much more expensive, to finished vehicle electronic
Performance requirement is the highest.For water heating system, sealing and the heating of urea tube joint are more difficult, urea pipe assembling and heating system
System is arranged more complicated, and the efficiency of heating surface is the highest, but price relatively electrical heating is the most a lot.
Summary of the invention
It is an object of the invention to provide a kind of interior heating urea tubular construction for SCR system, it has simple in construction
Compact, be easy to processing and the high feature of the efficiency of heating surface, exist when heating with the urea tube solved in prior art for SCR system
The problems referred to above.
For reaching this purpose, the present invention by the following technical solutions:
A kind of interior heating urea tubular construction for SCR system, it includes snap joint, urea pipe and heater wire, institute
Being provided with urea liquid passage in stating snap joint, and its one end is provided with linkage section, the end of described linkage section connects carbamide
Pipeline, wherein, the middle part in described linkage section is arranged at intervals with two-layer and cuts off, and offers outlet on the sidewall of described linkage section
Hole, described heater wire is installed in described urea pipe, and the heater strip in described heater wire is drawn by wire hole, described in add
Heating wire rod in heated filament is helically wound around on described linkage section, and described heating wire rod connects wire, and described wire is by connecing
Plug-in unit connects heating power supply.
Especially, described linkage section is colded pressing with described urea pipe by pagoda joint and is connected.
Especially, in described snap joint, the other end connecting urea pipe is provided with buckle.
Especially, described wire hole is in tilted layout, and " O " type that is provided with between described wire hole and described heater wire seals
Circle.
Especially, described heater wire includes internally positioned two piece heater strip and the resistant to urea being coated on outside described heater strip
Material layer, described heater strip includes that internally positioned heating wire rod, described heating wire rod are coated with high temperature resistant Teflon material
Layer, and described two heater strips use and are connected in parallel.
Especially, described linkage section is enclosed with resistant to urea material by low-pressure injection molding outside the joint of described urea pipe
Layer.
Beneficial effects of the present invention is, compared with prior art the described interior heating urea tubular construction for SCR system is adopted
Use interior heating arrangement, be not only simple in structure compact, it is simple to processing, effectively production and assembling can be realized；And improve pipe
The efficiency of heating surface on road.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the interior heating urea tubular construction for SCR system that the specific embodiment of the invention 1 provides；
Fig. 2 is the heater wire of the interior heating urea tubular construction for SCR system that the specific embodiment of the invention 1 provides
Profile.
Detailed description of the invention
Further illustrate technical scheme below in conjunction with the accompanying drawings and by detailed description of the invention.
Referring to shown in Fig. 1 and Fig. 2, in the present embodiment, a kind of interior heating urea tubular construction for SCR system includes soon
Quick coupling 1, urea pipe 2 and heater wire 3, be provided with urea liquid passage 4 in described snap joint 1, and its one end is provided with
Linkage section 5, one end of described linkage section 5 is provided with pagoda joint 6, is colded pressing even by pagoda joint 6 and described urea pipe 2
Connect.In described snap joint 1, the other end connecting urea pipe 2 being provided with buckle 7, described heater wire 3 is installed on institute
State in urea pipe 2.
Middle part in described linkage section 5 is arranged at intervals with two-layer and cuts off 8, and described two-layer is cut off 8 and acted on the original liquid of holding
While body circulation, can with the heater wire 3 in fast and easy installation pipeline, with prevent heater wire 3 directly in urea pipe 2 straight
Connected snap joint 1 internal out.Described heater wire 3 includes internally positioned two piece heater strip 9 and is coated on described heating
Resistant to urea material layer 10 outside silk 9, described heater strip 9 includes internally positioned heating wire rod 11, the outsourcing of described heating wire rod 11
Being covered with high temperature resistant Teflon material layer 12, and described two heater strips 9 use and are connected in parallel, described heating wire rod 11 connects leads
Line 13, described wire 13 connects heating power supply by connector 14.
Offering the wire hole 15 being in tilted layout on the sidewall of described linkage section 5, outlet is passed through at the two ends of described heater wire 3
Out, and heater strip 9 is drawn from wire hole 15 in hole 15, and is provided with " O " type between described wire hole 15 and described heater wire 3
Sealing ring 16, and stifled tight with plastics or other materials, prevent urea liquid from leaking.
Heater strip 9 head drawn in described wire hole 15 peels off resistant to urea material layer 10, exposes heating wire rod 11, heating
Wire rod 11 is spirally wound on linkage section 5, passes through low pressure outside the blank area that described linkage section 5 is whole with described urea pipe 2
Injection is enclosed with outer resistant to urea material layer 17.
Above example simply elaborates ultimate principle and the characteristic of the present invention, and the present invention is not limited by above-mentioned example,
Without departing from the spirit and scope, the present invention also has various change and change, and these changes and change both fall within
In scope of the claimed invention.Claimed scope is defined by appending claims and equivalent thereof.
Claims (6)
1., for an interior heating urea tubular construction for SCR system, it includes snap joint, urea pipe and heater wire, described
Being provided with urea liquid passage in snap joint, and its one end is provided with linkage section, the end of described linkage section connects urea tube
Road, it is characterised in that the middle part in described linkage section is arranged at intervals with two-layer and cuts off, and offers on the sidewall of described linkage section
Wire hole, described heater wire is installed in described urea pipe, and the heater strip in described heater wire is drawn by wire hole, institute
Stating the heating wire rod in heater strip to be helically wound around on described linkage section, described heating wire rod connects wire, and described wire leads to
Cross connector and connect heating power supply.
Interior heating urea tubular construction for SCR system the most according to claim 1, it is characterised in that described linkage section
Colded pressing with described urea pipe by pagoda joint and be connected.
Interior heating urea tubular construction for SCR system the most according to claim 1, it is characterised in that described quickly connect
In head, the other end connecting urea pipe is provided with buckle.
Interior heating urea tubular construction for SCR system the most according to claim 1, it is characterised in that described wire hole
It is in tilted layout, and " O " RunddichtringO is installed between described wire hole and described heater wire.
Interior heating urea tubular construction for SCR system the most according to claim 1, it is characterised in that described linkage section
It is enclosed with resistant to urea material layer by low-pressure injection molding with outside the joint of described urea pipe.
6. according to the interior heating urea tubular construction for SCR system described in any one of claim 1-5, it is characterised in that institute
State heater wire and include internally positioned two piece heater strip and the resistant to urea material layer being coated on outside described heater strip, described heater strip
Including internally positioned heating wire rod, described heating wire rod is coated with high temperature resistant Teflon material layer, and described two heating
Silk uses and is connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610729785.5A CN106121791A (en) | 2016-08-25 | 2016-08-25 | A kind of interior heating urea tubular construction for SCR system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610729785.5A CN106121791A (en) | 2016-08-25 | 2016-08-25 | A kind of interior heating urea tubular construction for SCR system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106121791A true CN106121791A (en) | 2016-11-16 |
Family
ID=57275309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610729785.5A Pending CN106121791A (en) | 2016-08-25 | 2016-08-25 | A kind of interior heating urea tubular construction for SCR system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106121791A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437958A (en) * | 2016-12-26 | 2017-02-22 | 北汽福田汽车股份有限公司 | Vehicle, tail gas treatment system adblue pipeline thereof and tail gas treatment control system thereof |
| CN107387216A (en) * | 2017-08-24 | 2017-11-24 | 弗兰科希管件系统（上海）有限公司 | Pipeline structure and selective catalytic reduction system operating |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010041906A1 (en) * | 2010-10-04 | 2012-04-05 | Robert Bosch Gmbh | Device for storage of ammonia, comprises a pressure vessel, in which a metal salt as the storage substance is included for ammonia, and heating elements for heating the metal salt, where the heating elements are tubular heating coils |
| CN102788207A (en) * | 2011-05-20 | 2012-11-21 | 诺马德国有限责任公司 | Connector for a heatable fluid line and heatable fluid line |
| CN102788220A (en) * | 2011-05-20 | 2012-11-21 | 诺马德国有限责任公司 | Fluid conduit |
| CN102788203A (en) * | 2011-05-20 | 2012-11-21 | 诺马德国有限责任公司 | Connector for a fluid line and fluid line |
| DE102014115445A1 (en) * | 2014-10-23 | 2016-04-28 | Rehau Ag + Co | Use of a media line |
| CN205977341U (en) * | 2016-08-25 | 2017-02-22 | 凯龙高科技股份有限公司 | A internal heating urea tubular construction for SCR system |
-
2016
- 2016-08-25 CN CN201610729785.5A patent/CN106121791A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010041906A1 (en) * | 2010-10-04 | 2012-04-05 | Robert Bosch Gmbh | Device for storage of ammonia, comprises a pressure vessel, in which a metal salt as the storage substance is included for ammonia, and heating elements for heating the metal salt, where the heating elements are tubular heating coils |
| CN102788207A (en) * | 2011-05-20 | 2012-11-21 | 诺马德国有限责任公司 | Connector for a heatable fluid line and heatable fluid line |
| CN102788220A (en) * | 2011-05-20 | 2012-11-21 | 诺马德国有限责任公司 | Fluid conduit |
| CN102788203A (en) * | 2011-05-20 | 2012-11-21 | 诺马德国有限责任公司 | Connector for a fluid line and fluid line |
| DE102014115445A1 (en) * | 2014-10-23 | 2016-04-28 | Rehau Ag + Co | Use of a media line |
| CN205977341U (en) * | 2016-08-25 | 2017-02-22 | 凯龙高科技股份有限公司 | A internal heating urea tubular construction for SCR system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437958A (en) * | 2016-12-26 | 2017-02-22 | 北汽福田汽车股份有限公司 | Vehicle, tail gas treatment system adblue pipeline thereof and tail gas treatment control system thereof |
| CN107387216A (en) * | 2017-08-24 | 2017-11-24 | 弗兰科希管件系统（上海）有限公司 | Pipeline structure and selective catalytic reduction system operating |
| CN107387216B (en) * | 2017-08-24 | 2024-01-19 | 弗兰科希管件系统（上海）有限公司 | Pipeline structure and selective catalytic reduction system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161116 |