CN207334006U - A kind of urea tube - Google Patents
A kind of urea tube Download PDFInfo
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- CN207334006U CN207334006U CN201721053963.3U CN201721053963U CN207334006U CN 207334006 U CN207334006 U CN 207334006U CN 201721053963 U CN201721053963 U CN 201721053963U CN 207334006 U CN207334006 U CN 207334006U
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- heating
- thermal insulation
- urea tube
- urea
- carbon fiber
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Abstract
The utility model discloses a kind of urea tube, including urea tube body, heated protective set (or being heating material and thermal insulation material shuffling body) and protection pipe and the connector for being connected with SCR other parts.The urea tube body is the pipeline for accommodating urea liquid.It is external that the heating material with thermal insulation material shuffling body is just sleeved on urea pipe sheet.The protection pipe is sleeved on outside heating and thermal insulation shuffling；Wherein, the heating and thermal insulation covers the hollow pipe band to be formed by carbon fiber cord and glass fibre cord by shuffling, the stitching composition rule shape of the carbon fiber cord, and above-mentioned regular shape is uniformly distributed on hollow pipe band.The homogeneous heating of above device, can prevent local temperature height；And electrothermal calefactive rate is fast；Overall heating effect is reliable and energy conservation and environmental protection.
Description
Technical field
The present invention relates to heating unit, particularly a kind of urea tube with heating function.
Background technology
Urea tube is automobile selective catalytic reduction system operating (Selective Catalyst Reduction, abbreviation SCR)
In be used for transmission the pipeline of urea liquid；At low ambient temperatures, urea liquid can crystallize, and urea normally can not be sprayed and flowed
It is dynamic, cause automobile SCR system to be stopped, vehicle can not normal operation, therefore the urea for occurring to make to have crystallized is melted into
The heating urea pipeline of liquid solution.
With the development of automobile, the arrangement of vehicle proposes urea tube pipeline new requirement, and heating urea pipeline is no longer
Conventional simple straight line pipeline is, it is necessary to which the sizing of shape needed for being carried out to pipeline, is installed so as to the arrangement of vehicle.Market at present
It is upper to exist with the urea tube of lower structure：It is fitted in using PTC heating tapes on urea pipe, energization realization is carried out to PTC heating tapes
Heating to urea pipe, as shown in fig. 7, there are problems with for the urea tube of the structure：
1st, PTC heating tapes and urea pipe single edge contact so that the uneven heating of urea pipe, can cause to heat from PTC
High near urea solution temperature, the urea solution temperature remote from PTC heating tapes is low, i.e., urea liquid is heated uneven；And
And for wherein close to the urea liquid of PTC heating tapes side, temperature is excessive to cause urea to go bad so that product reliability drops
It is low.2nd, also due to PTC heating tapes and urea pipe are single edge contacts so that the urea liquid programming rate in urea tube is slow.
3rd, resistance is low at low temperature for PTC heating tapes, high energy consumption during electrified regulation, not environmentally.
Carbon fibre material is high intensity, the new fiber materials of high modulus fibre of a kind of phosphorus content more than 95%.
Carbon fiber " soft outside but hard inside ", it is light high-strength, all it is important materials in defence and military and civilian aspect.It not only has carbon material
Intrinsic intrinsic property, and have both the soft machinability of textile fabric, it is reinforcing fiber of new generation.Wherein, since carbon fiber has
Have a good electrical and thermal conductivity performance, thus the above-mentioned electrical and thermal conductivity performance based on carbon fiber be made exothermic material derived it is a variety of
Commercial Application, such as carbon-fiber floor-heating, carbon-fibre electric blanket.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, the utility model provides a kind of urea tube, for solving
Certainly there is heating inequality in urea tube in the prior art, heat up slow and technical problem not environmentally.
Technical solution：To achieve the above object, the technical solution adopted in the utility model is：
A kind of urea tube, including urea tube body, heating and thermal insulation set and protection pipe, the urea tube body are receiving urea
The pipeline of solution, the heating and thermal insulation set are sleeved on outside urea tube body, and it is outer that the protection pipe is sleeved on heating and thermal insulation set；Its
In, heating and thermal insulation set is the hollow pipe formed by carbon fiber cord and glass fibre cord by shuffling, and the carbon is fine
The stitching composition rule shape of cord is tieed up, above-mentioned regular shape is uniformly distributed on hollow pipe.
The present invention has textile fabric softness machinability and good electrical and thermal conductivity performance using carbon fiber wire, by carbon
Filament and glass fiber shuffling are sleeved on outside urea tube body into hollow pipe, by equally distributed carbon fiber wire to urine
Plain tube body is evenly heated so that the urea liquid thermally equivalent in urea tube body, firing rate are fast；And carbon fiber
This is as Novel environment-friendlymaterial material, and electrical heat energy transformation efficiency is high, and energy consumption is low.Glass fiber therein has high-strength light high temperature resistant
The characteristics of, insulation can be played the role of to urea tube body, heat is reduced and dissipated to urea tube body outgoing.And due to heating
Muff is hollow tubular, therefore the fast and easy in assembling, and assembling speed is greatly improved compared to traditional PTC heating tapes；Add
Hot muff can adapt to the bending that needs produce after assembling of whole urea tube freely without shadow due to its soft characteristic
Ring the performance of heating and thermal insulation set.
Further, in the utility model, the carbon fiber heating silk quantity that is included in the carbon fiber cord according to plus
The heating power of hot thermal insulation casing determines that the high carbon fiber heating silk quantity of power is more, and the fiber-heated silk quantity of power low-carbon is few；Institute
State the glass fiber quantity included in glass fibre cord to be determined according to the outside diameter size of urea tube body, the big glass fibers of outside diameter
Dimension silk quantity is more, and the small glass fiber quantity of outside diameter is few.Therefore, the fibre in general every carbon fiber cord or glass fibre cord
Dimension amount, to differing between tens thousand of, can adjust quantity as needed thousands of.
Further, in the utility model, the cordage includes the left-handed cordage of multiply and multiply dextrorotation cordage,
The interlaced braiding of left-handed cordage and dextrorotation cordage reticulates, and forms the structure of densification.
Further, in the utility model, the carbon fiber cord is set as 5 with glass fibre cord ratio of number:1
~1:Between 20, above-mentioned tool can be determined according to the heating power of heating and thermal insulation casing and the outside diameter size synthesis of urea tube body
The ratio of body.
Further, in the utility model, in order to realize the uniform sequential distribution of carbon fiber wire, by the carbon fiber wire
Rope and glass fibre cord are evenly distributed in left-handed cordage and dextrorotation cordage.
Further, in the utility model, in any one group of rope group in left-handed rope group and dextrorotation rope group, all glass
Glass fiber cord is arranged side by side in centre, carbon fiber cord and glass fibre cord be arranged side by side in rope group side or divide equally in
The both sides of rope group.The heating and thermal insulation set formed according to the method described above, the diamond shape of stitching one interconnection of formation of carbon fiber wire,
Diamond shape central filler has glass fibre cord.
Further, in the utility model, quick coupling and injection sealed envelope head are further included；In the quick coupling
Connection end is provided with, the connection end includes urea tube body connecting portion and heating and thermal insulation set connecting portion, and urea tube sheet
Outside diameter of the body connecting portion in the end of heating and thermal insulation set connecting portion and urea tube body connecting portion is less than heating and thermal insulation set connection
Portion；The urea tube body connecting portion is set in the inner cavity of urea tube body one end, the heating and thermal insulation set connecting portion fitting
The inner wall of heating and thermal insulation set on the outside of aforementioned urea tube body one end；Heating corresponding with heating and thermal insulation set connecting portion is protected
A circle pair, which is respectively arranged with, inside and outside temperature set side wall leads copper foil tape；The double of heating and thermal insulation set lateral wall side lead copper foil tape
Metal binding belt is provided outside with banding heating and thermal insulation set connecting portion and heating and thermal insulation set；The injection sealed envelope headgear is loaded on fast
Outside the protection pipe of quick coupling and quick coupling side, and it is molded sealed envelope head at least sealed envelope and lives in quick coupling
Heating and thermal insulation set connecting portion position to the protection pipe of homonymy on.It can be achieved by heating and thermal insulation set be powered to fast quick access
The effect that head is heated.
Beneficial effect：
A kind of heating urea pipe provided by the utility model, heating and thermal insulation set therein are passed through by carbon fiber and glass fibre
Braiding into hollow bushing and is sleeved on the scheme of formation heating insulation layer outside urea tube body after processing, passes through carbon fiber heating
Silk is heated, and carbon fiber heating silk is uniformly distributed in whole heating and thermal insulation and put on by while weaving so that homogeneous heating, production
Product qualification rate is high；By quick coupling and injection sealed envelope head ensure that connected between the present apparatus and SCR miscellaneous parts can
By property；
, can be to prevent to compared to traditional PTC heating tapes heating, the heating effect of above device is more reliable, homogeneous heating
Only local temperature is high；And electrothermal calefactive rate is fast, existing urea heating tube makes the temperature of urea in pipe be raised to 5 DEG C from subzero 40 DEG C
Time needs 25-30 minutes, and the device of the invention only needs 3-10 minutes；Carbon fiber wire electrical heat energy transformation efficiency is high, therefore more
For energy conservation and environmental protection.
Brief description of the drawings
Fig. 1 is the structure diagram of the middle urea tube pipeline portions of the utility model；
Fig. 2 is left-handed schematic diagram；
Fig. 3 is dextrorotation schematic diagram；
Fig. 4 is the left-handed and braiding schematic diagram of dextrorotation；
Fig. 5 is the structure diagram of the utility model entirety；
Fig. 6 is the connection diagram between quick coupling in Fig. 5, injection sealed envelope head and urea pipe；
Fig. 7 is a kind of urea tube structure diagram of the prior art.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.
The structure of urea tube as shown in Figure 1 is made of urea tube body 1, heating insulation layer set 2, protection pipe 3.
The material of the urea tube body 1 is nylon-type tubing, and the material of protection pipe 3 is the ripple of PP classes or nylon-type
Pipe, is equipped with heating insulation layer set 2 between urea tube body 1 and protection pipe 3, and heating insulation layer set 2 is equably sleeved on urea tube
On body 1, protection pipe 3 is equably sleeved on heating insulation layer set 2.
Heating and thermal insulation set 2 is the hollow pipe formed by carbon fiber cord and glass fibre cord by shuffling, and the carbon is fine
The stitching composition rule shape of cord is tieed up, above-mentioned regular shape is uniformly distributed on hollow pipe.
The more carbon fiber heating silks of a diameter of 2-100um are first screwed up to composition carbon fiber cord side by side, then will be a diameter of
The more glass fibers of 2-100um screw up composition glass fibre cord side by side, finally by the carbon fiber cord and multiply of multiply
Glass fibre cord be woven together by certain structure, final multi-strand carbon fiber cord constitutes heating layer, the glass of multiply
Glass fiber cord constitutes insulating layer.During braiding, it need to try one's best carbon fiber cord is equal along the circumferential and axial of heating and thermal insulation set 2
It is even to be distributed on the heating insulation layer set 2 entirely formed so that homogeneous heating degree is high.
It is preferably that carbon is fine in braiding since forward-reverse spiral is all regularly uniformly distributed in circumferential direction and circumferential direction
Dimension cord is woven with glass fibre cord according to the method that forward-reverse spiral weaves.If Fig. 2 is left-handed schematic diagram, as Fig. 3 is
Dextrorotation schematic diagram, the forward-reverse spiral in Fig. 2 and Fig. 3 is intersected, and to be knitted to form as shown in Figure 4 be in netted cylinder structure.
Specifically, 2 carbon fiber cords of selection and 5 glass fibre cords, above-mentioned 7 ropes form left-handed shape side by side respectively
Formula, and 5 glass fibre cords are located at both sides respectively positioned at middle, 2 carbon fiber cords, so as to form left-handed rope group；According to
Similar method, forms dextrorotation rope group；Rope in above-mentioned left-handed rope group and dextrorotation rope group is intersected successively, and it is netted to be formed
Cylinder structure.Above-mentioned heating insulation layer covers 2 compact structures and retractility is good, can easily be sleeved on urea tube body 1.
As shown in Figure 5 and Figure 6, quick coupling 4 and injection sealed envelope first 8 are further included；It is provided with the quick coupling 4
Connection end, the connection end includes urea tube body connecting portion and heating and thermal insulation set connecting portion, and urea tube body connects
Portion is located at the end of heating and thermal insulation set connecting portion and the outside diameter of interior urea tube body connecting portion is less than heating and thermal insulation set connecting portion；Institute
State urea tube body connecting portion to be set in one end inner cavity of urea tube body 1, before the heating and thermal insulation set connecting portion fits in
State the inner wall of the heating and thermal insulation set 2 on the outside of 1 one end of urea tube body；Heating and thermal insulation corresponding with heating and thermal insulation set connecting portion
Cover and be respectively arranged with that a circle is double to lead copper foil tape inside and outside 2 side walls, wherein cover 2 lateral wall sides positioned at heating and thermal insulation double leads copper to be outer
Foil belt 6, positioned at heating and thermal insulation cover 2 madial wall sides for it is interior it is double lead copper foil tape 5, it is outer double to lead copper foil tape 6 and interior double lead copper
The position correspondence of foil belt 5；It is described it is outer it is double lead copper foil tape 6 be provided outside 7 stirrup heating and thermal insulation of metal binding belt set connecting portion with
Heating and thermal insulation set 2；The injection sealed envelope first 8 is set in outside the protection pipe 3 of 4 side of quick coupling 4 and quick coupling
Portion, and be molded the heating and thermal insulation that at least sealed envelope of sealed envelope first 8 is lived in quick coupling 4 and cover connecting portion position to the guarantor of homonymy
On pillar 3.
Above-mentioned 4 inner cavity of quick coupling is hollow through so that the urea in urea tube body 1 can flow freely, and lead to
Cross double copper foil tapes of leading and realize that heating and thermal insulation covers the heat transfer between 2 and quick coupling 4, and metal binding belt 7 is set here
To ensure that heating and thermal insulation covers 2 effects fitted closely with quick coupling 4；Finally realized again by being molded sealed envelope first 8 to fast
Sealing between quick coupling 4 and urea pipe, on the one hand prevents the urea liquid loss in joint, on the other hand strengthens connecing
Heat insulation effect at head.
Urea pipe and other parts in SCR system are connected by quick coupling 4, by heating and thermal insulation set 2
Carry out the effect that can be achieved to be heated to quick coupling 4 that is powered；And on the heating and thermal insulation set 2 formed according to the method described above
Carbon fiber heating silk is distributed more uniformly in circumferential and axial, and since carbon fiber wire heating is rapid so that urea tube body 1
No matter interior solution can obtain uniformly and effectively quickly heating in which position, the excellent performance of the product of guarantee.
The above is only the preferred embodiment of the utility model, it should be pointed out that：For the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (9)
- A kind of 1. urea tube, it is characterised in that：Including urea tube body (1), heating and thermal insulation set (2) and protection pipe (3), the urine Plain tube body (1) is accommodates the pipeline of urea liquid, and the heating and thermal insulation set (2) is sleeved on urea tube body (1) outside, the guarantor Pillar (3) is sleeved on heating and thermal insulation set (2) outside；Wherein, the heating and thermal insulation set (2) is by carbon fiber cord and glass fibre Cord passes through the hollow pipe that shuffling forms, the stitching composition rule shape of the carbon fiber cord, and above-mentioned regular shape uniformly divides It is distributed on hollow pipe.
- 2. urea tube according to claim 1, it is characterised in that：The carbon fiber cord is added by the carbon fiber of laid out in parallel Heated filament forms, and the carbon fiber heating silk quantitative levels scope that every carbon fiber cord includes is between thousands of to tens thousand of, every The diameter range of carbon fiber cord is 2-100um.
- 3. urea tube according to claim 1, it is characterised in that：The glass fibre cord by laid out in parallel glass fibers Silk composition is tieed up, the glass fiber quantitative levels scope that every glass fibre cord includes is between thousands of to tens thousand of, every The diameter range of glass fiber is in 2-100um.
- 4. urea tube according to claim 1, it is characterised in that：The heating and thermal insulation set (2) includes the left-handed fiber of multiply Rope and multiply dextrorotation cordage, the interlaced braiding of left-handed cordage and dextrorotation cordage reticulate.
- 5. urea tube according to claim 1, it is characterised in that：The carbon fiber cord and glass fibre cord quantity it Than for 5:1~1:20.
- 6. urea tube according to claim 4, it is characterised in that：All left-handed fiber cords form left-handed rope group, institute By dextrorotation fiber cord form dextrorotation rope group, the equal mean allocation of the carbon fiber cord and glass fibre cord is in left-handed rope group In dextrorotation rope group.
- 7. urea tube according to claim 6, it is characterised in that：Any one group of rope in left-handed rope group and dextrorotation rope group In group, all glass fibre cords are arranged side by side to be arranged side by side in rope group one in centre, carbon fiber cord with glass fibre cord Side is divided equally in the both sides of rope group.
- 8. urea tube according to claim 1, it is characterised in that：The protection pipe (3) is bellows.
- 9. according to the urea tube described in any one in claim 1 to 8, it is characterised in that：Further include quick coupling (4) and note Mould sealed envelope head (8)；Connection end is provided with the quick coupling (4), the connection end connects including urea tube body Socket part and heating and thermal insulation set connecting portion, and urea tube body connecting portion is in the end of heating and thermal insulation set connecting portion and urea tube sheet The outside diameter of body connecting portion is less than heating and thermal insulation set connecting portion；The urea tube body connecting portion is set in urea tube body (1) one In the inner cavity at end, the heating and thermal insulation set connecting portion fits in the heating and thermal insulation set (2) on the outside of aforementioned urea tube body (1) one end Inner wall；A circle pair, which is respectively arranged with, inside and outside heating and thermal insulation set (2) side wall corresponding with heating and thermal insulation set connecting portion leads copper Foil belt；Heating and thermal insulation set (2) the lateral wall side it is double lead copper foil tape and be provided outside metal binding belt (7) heated with banding Muff connecting portion and heating and thermal insulation set (2)；The injection sealed envelope head (8) is set in quick coupling (4) and quick coupling (4) protection pipe (3) of side is exterior, and is molded sealed envelope head (8) at least sealed envelope and lives adding in quick coupling (4) In hot muff connecting portion position to the protection pipe (3) of homonymy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721053963.3U CN207334006U (en) | 2017-08-22 | 2017-08-22 | A kind of urea tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721053963.3U CN207334006U (en) | 2017-08-22 | 2017-08-22 | A kind of urea tube |
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| Publication Number | Publication Date |
|---|---|
| CN207334006U true CN207334006U (en) | 2018-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721053963.3U Active CN207334006U (en) | 2017-08-22 | 2017-08-22 | A kind of urea tube |
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| CN (1) | CN207334006U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725917A (en) * | 2017-08-22 | 2018-02-23 | 南京好世通电气有限公司 | A kind of urea tube |
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2017
- 2017-08-22 CN CN201721053963.3U patent/CN207334006U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725917A (en) * | 2017-08-22 | 2018-02-23 | 南京好世通电气有限公司 | A kind of urea tube |
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