CN205977341U - A internal heating urea tubular construction for SCR system - Google Patents

A internal heating urea tubular construction for SCR system Download PDF

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Publication number
CN205977341U
CN205977341U CN201620945300.1U CN201620945300U CN205977341U CN 205977341 U CN205977341 U CN 205977341U CN 201620945300 U CN201620945300 U CN 201620945300U CN 205977341 U CN205977341 U CN 205977341U
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China
Prior art keywords
urea
wire
heating
scr system
tubular construction
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CN201620945300.1U
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Chinese (zh)
Inventor
臧志成
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Kailong High Technology Co Ltd
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Kailong High Technology Co Ltd
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Priority to CN201620945300.1U priority Critical patent/CN205977341U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

Abstract

The utility model discloses an internal heating urea tubular construction for SCR system, it includes quick -operation joint, urea pipeline and heater wire, be provided with the urea solution passageway in the quick -operation joint, and its one end is provided with the linkage segment, the end connection urea pipeline of linkage segment, wherein, middle part interval in the linkage segment is provided with two -layer wall, just the wire hole has been seted up on the lateral wall of linkage segment, the heater wire install in in the urea pipeline, just heater strip in the heater wire is drawn forth through the wire hole, heating wire rod spiral winding in the heater strip in on the linkage segment, the heating wire rod is connected with the wire, the wire passes through the connector and connects heating power supply. Heating structure in above -mentioned an internal heating urea tubular construction for SCR system adopts, not only simple structure is compact, and the handling ease can realize very effectual production and equipment, and the heating efficiency of pipeline has been improved.

Description

A kind of interior heating urea tubular construction for SCR system
Technical field
This utility model belongs to urea tube heating technique, especially relates to a kind of interior heating urea pipe for SCR system Structure.
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 the effect of EGT and air-flow Lower hydrolysis is produced as CO2And ammonia, NOx is reduced into free of contamination nitrogen and water as reducing agent by ammonia.
Using carbamide based on SCR diesel engine is additive, freezes, be when the characteristic of carbamide is for -11 DEG C under ambient pressure Guarantee northern area can normally thaw using it is necessary to carbamide carried out with heating, to ensure the normal liquid fluidity of carbamide. In the prior art, common Urea defrosting strategy has two kinds, is electrical heating and engine cooling water heating.Two kinds of heating Defrosting strategy respectively has pluses and minuses, and electric heating system arrangement is simple, and the efficiency of heating surface is higher, but price is very expensive, to finished vehicle electronic Performance requirement is very high.For water heating system, the sealing of urea tube joint and heating are more difficult, and urea pipe assembling and heating are System arrangement is more complicated, and the efficiency of heating surface is not high, but price is cheaply a lot of compared with electrical heating.
Utility model content
The purpose of this utility model is to provide a kind of interior heating urea tubular construction for SCR system, and it has structure Simply compact, be easy to process and the high feature of the efficiency of heating surface, when heating with the urea tube solving to be used for SCR system in prior art The problems referred to above existing.
For reaching this purpose, this utility model employs 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 State and in snap joint, be provided with urea liquid passage, 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 cut-off, and offers outlet on the side wall 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 plus Heating wire rod in heated filament is helically wound around on described linkage section, and described heating wire rod is connected with wire, and described wire passes through to connect 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 is provided with the sealing of " O " type between described wire hole and described heater wire 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 internally positioned heating wire rod, and described heating wire rod is coated with high temperature resistant Teflon material Layer, and described two heater strips are using being connected in parallel.
Especially, outside described linkage section and the joint of described urea pipe, resistant to urea material is enclosed with by low-pressure injection molding Layer.
The beneficial effects of the utility model are that compared with prior art the described interior heating urea pipe for SCR system is tied Structure adopts interior heating arrangement, is not only simple in structure compact, is easy to process, and enables effectively production and assembling;And improve The efficiency of heating surface of pipeline.
Brief description
Fig. 1 is the signal of the interior heating urea tubular construction for SCR system that this utility model specific embodiment 1 provides Figure;
Fig. 2 is the heating of the interior heating urea tubular construction for SCR system that this utility model specific embodiment 1 provides The profile of line.
Specific embodiment
Further illustrate the technical solution of the utility model below in conjunction with the accompanying drawings and by specific embodiment.
Refer 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, are provided with urea liquid passage 4 in described snap joint 1, and its one end are 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 is 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 cut-off 8, and described two-layer cut-off 8 acts on the original liquid of holding While body circulation, can be with the heater wire 3 in fast and easy installation pipeline, to prevent heater wire 3 directly straight in urea pipe 2 Connected inside snap joint 1 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, described heating wire rod 11 outsourcing It is covered with high temperature resistant Teflon material layer 12, and described two heater strips 9 are using being connected in parallel, described heating wire rod 11 is connected with leads Line 13, described wire 13 connects heating power supply by connector 14.
The wire hole 15 being in tilted layout is offered on the side wall 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 blocked up 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 described linkage section 5 blank area whole with described urea pipe 2 Injection is enclosed with outer resistant to urea material layer 17.
Above example simply elaborates ultimate principle of the present utility model and characteristic, and this utility model is not subject to above-mentioned example Limit, on the premise of without departing from this utility model spirit and scope, this utility model also has various change and change, these changes Change and change and both fall within the range of claimed this utility model.This utility model claims scope will by appended right Ask book and its equivalent thereof.

Claims (6)

1. a kind of interior heating urea tubular construction for SCR system, it includes snap joint, urea pipe and heater wire, described It is 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 is it is characterised in that the middle part in described linkage section is arranged at intervals with two-layer cut-off, and offers on the side wall 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 State the heating wire rod in heater strip to be helically wound around on described linkage section, described heating wire rod is connected with wire, and described wire leads to Cross connector and connect heating power supply.
2. the interior heating urea tubular construction for SCR system according to claim 1 is it is characterised in that described linkage section Colded pressing with described urea pipe by pagoda joint and be connected.
3. the interior heating urea tubular construction for SCR system according to claim 1 is it is characterised in that described quickly connect In head, the other end connecting urea pipe is provided with buckle.
4. the interior heating urea tubular construction for SCR system according to claim 1 is it is characterised in that described wire hole It is in tilted layout, and " O " type sealing ring is installed between described wire hole and described heater wire.
5. the interior heating urea tubular construction for SCR system according to claim 1 is it is characterised in that described linkage section With outside the joint of described urea pipe, resistant to urea material layer is enclosed with by low-pressure injection molding.
6. the interior heating urea tubular construction for SCR system according to any one of claim 1-5 is 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 is using being connected in parallel.
CN201620945300.1U 2016-08-25 2016-08-25 A internal heating urea tubular construction for SCR system Active CN205977341U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620945300.1U CN205977341U (en) 2016-08-25 2016-08-25 A internal heating urea tubular construction for SCR system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620945300.1U CN205977341U (en) 2016-08-25 2016-08-25 A internal heating urea tubular construction for SCR system

Publications (1)

Publication Number Publication Date
CN205977341U true CN205977341U (en) 2017-02-22

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CN201620945300.1U Active CN205977341U (en) 2016-08-25 2016-08-25 A internal heating urea tubular construction for SCR system

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106121791A (en) * 2016-08-25 2016-11-16 凯龙高科技股份有限公司 A kind of interior heating urea tubular construction for SCR system
CN113167163A (en) * 2018-11-15 2021-07-23 纬湃科技有限责任公司 Module for metering a reducing agent with an elastic thermal bridge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106121791A (en) * 2016-08-25 2016-11-16 凯龙高科技股份有限公司 A kind of interior heating urea tubular construction for SCR system
CN113167163A (en) * 2018-11-15 2021-07-23 纬湃科技有限责任公司 Module for metering a reducing agent with an elastic thermal bridge

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