CN204327245U - Urea pipe joint - Google Patents
Urea pipe joint Download PDFInfo
- Publication number
- CN204327245U CN204327245U CN201420686335.9U CN201420686335U CN204327245U CN 204327245 U CN204327245 U CN 204327245U CN 201420686335 U CN201420686335 U CN 201420686335U CN 204327245 U CN204327245 U CN 204327245U
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- Prior art keywords
- pipe joint
- heating
- water cavity
- heating water
- urea
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Abstract
The utility model discloses a kind of urea pipe joint, left and right pipe joint includes inside and outside tube wall, it is heating water cavity between inside and outside tube wall, heating water cavity is communicated with cooling water pipeline, the inwall of heating water cavity is provided with electric heating layer, thus realizes water power and heat liquid in pipe simultaneously, improves the efficiency of heating surface, can solve after pipe joint urea freezes and melt problem slowly, the phenomenon of again condensing when effectively preventing cold area urea tube flow low; When engine coolant temperature is lower, adopts electric heating, after coolant water temperature reaches certain value, can electric heating be stopped, only adopting water heating, realize energy-conservation; Heating water cavity adopts helix structure, when water enters in water cavity, is uniformly distributed in whole water cavity, increases heating area, ensures homogeneous heating.And the utility model structure is simple, heating effect is good.
Description
Technical field
The utility model relates to a kind of urea pipe joint.
Background technique
For meeting Abgasgesetz, selective catalytic reduction technology is present mainstream technology route, and the standard urea aqueous solution of use at high temperature can decomposite NH
3, SCR system utilizes NH
3by the NO in engine exhaust
x, be reduced into N
2, to reduce NO
xdischarge.But urea liquid, freezing lower than starting when-11 DEG C, causes pipeline blockage, urea nozzle cannot normal injection, affects the discharge of motor.Thus at low ambient temperatures, the pipeline that must connect urea and urea injection system and urea carries out heating and thaws, to ensure proper flow and the injection of urea liquid.Conventional mode of heating is wound around resistive heater on the pipeline of flow of urea warp, and generated heat by resistive heater electrified regulation resistance wire, melt the ice cube of urea pipe, but the joint part of pipeline is the part of the most difficult thawing.Joint blocking can cause whole heating unsuccessful, is necessary butt joint strengthening heating.Existing joint is connected by the mode of inserting mode with pipeline grafting, this part does not normally have heating function, joint part is caused to be easier to freeze, when heating and melting, can only by be heated in pipeline and the heat trnasfer of the urea liquid melted realizes, now urea liquid is immobilising, and heat trnasfer is slower, this will cause urea to melt slowly, reduce the efficiency of heating surface.In cold area, when urea liquid flow velocity is lower, because joint part does not heat, phenomenon of again condensing may be there is.
Model utility content
The technical problems to be solved in the utility model is for above-mentioned defect, provides a kind of pipe interface portion and can heat, can solve the urea pipe joint melting slow problem after pipe joint urea freezes.
In order to solve the problems of the technologies described above, the right pipe joint that the utility model comprises left pipe joint and coordinates with left pipe joint, one end of described left pipe joint is provided with the left cutting graftage part coordinated with right pipe joint, one end of right pipe joint is provided with corresponding with left cutting graftage part and integrated with right pipe joint right cutting graftage part, its structural feature is: described left pipe joint comprises left inside wall and left outside wall, it is left heating water cavity between described inside and outside wall, the inwall of described left heating water cavity is provided with left electric heating layer, the outer wall of described left heating water cavity is provided with left thermal insulation layer, described left cutting graftage part is provided with the water intake and water outlet that are communicated with left heating water cavity, between described left cutting graftage part and right cutting graftage part, seal arrangement and locker are installed.
Described right pipe joint comprises right inside wall and right outside wall, it is right heating water cavity between described inside and outside wall, the inwall of described right heating water cavity is provided with right electric heating layer, the outer wall of described right heating water cavity is provided with right thermal insulation layer, and described right pipe joint is provided with the water intake and water outlet that are communicated with right heating water cavity.
Described seal arrangement comprises two, the left and right O RunddichtringO being disposed on left cutting graftage part internal surface, is provided with inner shield ring, is provided with outer back-up ring between described locker and right side O RunddichtringO between described two O RunddichtringOs.
Described locker comprises oval-shaped shell, and an end of shell contacts with outer back-up ring, and the internal surface of described shell is provided with snap close barb, and described right outside wall is provided with the snap close corresponding with snap close barb.
The other end of described shell is arranged with along the both sides in its major diameter direction and pulls out holder button.
Described left heating water cavity and right heating water cavity are helical.
Compared with prior art the utility model has the following advantages: left and right pipe joint includes inside and outside tube wall, it is heating water cavity between inside and outside tube wall, heating water cavity is communicated with cooling water pipeline, the inwall of heating water cavity is provided with electric heating layer, thus realize the Hybrid Heating of liquid in pipe, improve the efficiency of heating surface, can solve after pipe joint urea freezes and melt problem slowly, the phenomenon of again condensing when effectively preventing cold area urea tube flow low; When engine coolant temperature is lower, adopts electric heating, after coolant water temperature reaches certain value, can electric heating be stopped, only adopting water heating, realize energy-conservation; Heating water cavity adopts helix structure, when water enters in water cavity, is uniformly distributed in whole water cavity, increases heating area, ensures homogeneous heating.And the utility model structure is simple, heating effect is good.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail:
Fig. 1 is the structural representation of left pipe joint;
Fig. 2 is the structural representation of right pipe joint;
The structural representation of Fig. 3 locker.
Embodiment
With reference to accompanying drawing, the right pipe joint 2 that this urea pipe joint comprises left pipe joint 1 and coordinates with left pipe joint 1, one end of left pipe joint 1 is provided with the left cutting graftage part 11 coordinated with right pipe joint 2, one end of right pipe joint 2 is provided with corresponding with left cutting graftage part 11 and integrated with right pipe joint 2 right cutting graftage part 21, left pipe joint 1 comprises left inside wall 12 and left outside wall 13, it is left heating water cavity 14 between inside and outside wall, the inwall of left heating water cavity 14 is provided with left electric heating layer 15, the outer wall of left heating water cavity 14 is provided with left thermal insulation layer 16, left cutting graftage part 11 is provided with the water intake 4 and water outlet 5 that are communicated with left heating water cavity 14, intake-outlet is connected with cooling water pipeline respectively, between left cutting graftage part 11 and right cutting graftage part 21, seal arrangement and locker are installed.With reference to accompanying drawing 2, right pipe joint 2 comprises right inside wall 22 and right outside wall 23, it is right heating water cavity 24 between inside and outside wall, the inwall of right heating water cavity 24 is provided with right electric heating layer 25, the outer wall of right heating water cavity 24 is provided with right thermal insulation layer 26, right pipe joint 2 is provided with the water intake 6 and water outlet 7 that are communicated with right heating water cavity 24, and intake-outlet is connected with cooling water pipeline respectively.Left electric heating layer 15 in the present embodiment and right electric heating layer 25 all use PTC electric heating piece to realize heating function, the outside of left and right pipe joint is provided with the electrical connector be electrically connected with PTC electric heating piece, electrical connector is connected with power supply, thus realize the power supply of electric heating layer, the power supply mode of electric heating layer is prior art, does not repeat them here.PTC electric heating piece two sides is with isolation layer, and have that thickness is thin, rate of heating is fast, heat conduction is fast, automatically can control the features such as heating power with Current Temperatures, therefore can preheat pipe joint when firm ato unit, in the present embodiment, left heating water cavity 14 and right heating water cavity 24 are helical, heating water cavity in left and right is connected with the cooling line of cooling urea nozzle respectively, when water enters in water cavity, whole water cavity can be uniformly distributed, and ensures water homogeneous heating.Left and right thermal insulation layer is pasted onto on the outer wall of left and right heating water cavity respectively, and left and right thermal insulation layer plays the effect of insulation to the water in heating water cavity.
With reference to accompanying drawing 1, seal arrangement between left cutting graftage part 11 and right cutting graftage part 21 comprises two, the left and right O RunddichtringO 17 being disposed on left cutting graftage part 11 internal surface, between two O RunddichtringOs 17, inner shield ring 18 is installed, between locker and right side O RunddichtringO 17, outer back-up ring 19 is installed, can prevents liquid in pipe from leaking.With reference to accompanying drawing 3, locker comprises oval-shaped shell 3, one end of shell 3 extends in the inner chamber of cutting graftage part 11 left, form extension, the end of extension contacts with outer back-up ring 19, the internal surface of shell 3 is provided with snap close barb 31, and the internal diameter of extension is greater than the internal diameter of snap close barb 31, and the external diameter of extension is less than the external diameter of shell 3.Right outside wall 23 is provided with the snap close 27 corresponding with snap close barb 31, in the present embodiment, the shell of locker is made of plastics, right cutting graftage part 21 is inserted in left cutting graftage part 11, snap close 27 on right outside wall 23 coordinates with the snap close barb 31 of shell 3 internal surface, thus left and right pipe joint is connected as one, the other end of shell 3 is arranged with along the both sides in its major diameter direction and pulls out holder button 36, when left and right pipe joint is separated, holder button 36 is pulled out in extruding two, make oval-shaped shell generation deformation, shell 3 becomes sub-circular, now snap close barb 31 departs from snap close 27, thus left and right pipe joint is separated.
When engine coolant temperature is lower, adopts electric heating, after coolant water temperature reaches certain value, can electric heating be stopped, only adopting water heating, realize energy-conservation.In the utility model, pipe joint can be designed to various shape, as being with the joint etc. of bent angle.
The utility model is not limited to above-mentioned embodiment, those skilled in the art, under the prerequisite not departing from spirit and scope of the present utility model, can do some changes and modification.Protection domain of the present utility model should be as the criterion with claim of the present utility model.
Claims (6)
1. a urea pipe joint, the right pipe joint (2) comprising left pipe joint (1) and coordinate with left pipe joint (1), one end of described left pipe joint (1) is provided with the left cutting graftage part (11) coordinated with right pipe joint (2), one end of right pipe joint (2) is provided with corresponding with left cutting graftage part (11) and integrated with right pipe joint (2) right cutting graftage part (21), it is characterized in that: described left pipe joint (1) comprises left inside wall (12) and left outside wall (13), it is left heating water cavity (14) between described inside and outside wall, the inwall of described left heating water cavity (14) is provided with left electric heating layer (15), the outer wall of described left heating water cavity (14) is provided with left thermal insulation layer (16), described left cutting graftage part (11) is provided with the water intake (4) and water outlet (5) that are communicated with left heating water cavity (14), between described left cutting graftage part (11) and right cutting graftage part (21), seal arrangement and locker are installed.
2. urea pipe joint according to claim 1, it is characterized in that: described right pipe joint (2) comprises right inside wall (22) and right outside wall (23), it is right heating water cavity (24) between described inside and outside wall, the inwall of described right heating water cavity (24) is provided with right electric heating layer (25), the outer wall of described right heating water cavity (24) is provided with right thermal insulation layer (26), and described right pipe joint (2) is provided with the water intake (6) and water outlet (7) that are communicated with right heating water cavity (24).
3. urea pipe joint according to claim 2, it is characterized in that: described seal arrangement comprises two, the left and right O RunddichtringO (17) being disposed on left cutting graftage part (11) internal surface, between described two O RunddichtringOs (17), inner shield ring (18) is installed, outer back-up ring (19) is installed between described locker and right side O RunddichtringO (17).
4. urea pipe joint according to claim 3, it is characterized in that: described locker comprises oval-shaped shell (3), one end of shell (3) contacts with outer back-up ring (19), the internal surface of described shell (3) is provided with snap close barb (31), and described right outside wall (23) is provided with the snap close (27) corresponding with snap close barb (31).
5. urea pipe joint according to claim 4, is characterized in that: the other end of described shell (3) is arranged with along the both sides in its major diameter direction and pulls out holder button (36).
6. urea pipe joint according to claim 1, is characterized in that: described left heating water cavity (14) and right heating water cavity (24) are helical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420686335.9U CN204327245U (en) | 2014-11-17 | 2014-11-17 | Urea pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420686335.9U CN204327245U (en) | 2014-11-17 | 2014-11-17 | Urea pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204327245U true CN204327245U (en) | 2015-05-13 |
Family
ID=53163616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420686335.9U Active CN204327245U (en) | 2014-11-17 | 2014-11-17 | Urea pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204327245U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635771A (en) * | 2022-02-24 | 2022-06-17 | 北汽福田汽车股份有限公司 | Urea sprays pipe connection seat, urea and sprays pipeline structure and vehicle |
-
2014
- 2014-11-17 CN CN201420686335.9U patent/CN204327245U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635771A (en) * | 2022-02-24 | 2022-06-17 | 北汽福田汽车股份有限公司 | Urea sprays pipe connection seat, urea and sprays pipeline structure and vehicle |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |