CN106285864A - There is the urea tube of one-way throttle function, urea injection system and control method thereof - Google Patents
There is the urea tube of one-way throttle function, urea injection system and control method thereof Download PDFInfo
- Publication number
- CN106285864A CN106285864A CN201610948316.2A CN201610948316A CN106285864A CN 106285864 A CN106285864 A CN 106285864A CN 201610948316 A CN201610948316 A CN 201610948316A CN 106285864 A CN106285864 A CN 106285864A
- Authority
- CN
- China
- Prior art keywords
- urea
- carbamide
- tube
- heat
- bypass pipe
- 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 353
- 239000004202 carbamide Substances 0.000 title claims abstract description 176
- 238000002347 injection Methods 0.000 title claims abstract description 17
- 239000007924 injection Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 8
- 235000013877 carbamide Nutrition 0.000 claims abstract description 174
- 239000004677 Nylon Substances 0.000 claims abstract description 18
- 229920001778 nylon Polymers 0.000 claims abstract description 18
- 230000002093 peripheral effect Effects 0.000 claims abstract description 9
- 238000009413 insulation Methods 0.000 claims abstract description 8
- 239000007921 spray Substances 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 4
- 230000002337 anti-port Effects 0.000 claims description 3
- 239000011888 foil Substances 0.000 claims description 3
- 230000000873 masking effect Effects 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 4
- 210000002700 urine Anatomy 0.000 description 3
- 238000010992 reflux Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012805 post-processing 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
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
-
- 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
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
-
- 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
-
- 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
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
Abstract
A kind of urea tube with one-way throttle function, it includes fast patch plug, the carbamide outlet connection being connected with described fast patch plug and the bypass pipe assembly being connected with described carbamide outlet connection, described bypass pipe assembly includes resistant to urea nylon tube, it is wrapped on described resistant to urea nylon tube and in order to heat the resistance wire of described resistant to urea nylon tube, it is positioned at the periphery of described resistance wire and in order to limit the heat-conducting layer of described resistance wire, it is wrapped in the peripheral heat-insulation layer of described heat-conducting layer and is wrapped in the corrugate sheath that described heat-insulation layer is peripheral, described bypass pipe assembly is provided with one-way throttle valve.It is arranged such, it is possible to when system pressure is higher, carbamide is back to urea box, plays the protective effect to urea pump.It addition, play when gear pump reversion pumpback reversely by effect so that the carbamide in carbamide manometer tube can flow back into described urea box.The invention still further relates to a kind of urea injection system and control method thereof.
Description
Technical field
The present invention relates to a kind of there is the urea tube of one-way throttle function, urea injection system and control method thereof, belong to
Motor exhaust post-processing technology field.
Background technology
Existing urea injection system generally include the urea pump assembly in order to extracted urea solution from urea box and
In order to spray the urea nozzle of carbamide in the tail gas of electromotor.Based on current urea pump assembly at work, pump continuous service
Supply carbamide, and the water-cooled nozzle used is not provided with the structure of carbamide cooling for reflux.When nozzle is not turned on, pump out from urea pump
Carbamide cannot reflux, cause urea pump overflow phenomena, urea pump will be damaged.
Summary of the invention
It is an object of the invention to provide and a kind of there is the urea tube of one-way throttle function, urea injection system and control thereof
Method.
For achieving the above object, the present invention adopts the following technical scheme that a kind of urea tube with one-way throttle function, its
The carbamide outlet connection that is connected with described fast patch plug including fast patch plug and being connected with described carbamide outlet connection
Bypass pipe assembly, described bypass pipe assembly includes resistant to urea nylon tube, is wrapped on described resistant to urea nylon tube and in order to heat
The resistance wire of described resistant to urea nylon tube, it is positioned at the periphery of described resistance wire and in order to limit the heat-conducting layer of described resistance wire, bag
It is rolled in the peripheral heat-insulation layer of described heat-conducting layer and is wrapped in the corrugate sheath that described heat-insulation layer is peripheral, in described bypass pipe assembly
One-way throttle valve is installed.
As further improved technical scheme of the present invention, described fast patch plug is provided with and aligns with described carbamide outlet connection
Inlet duct portion and be connected to the outlet duct portion between described inlet duct portion and described carbamide outlet connection, wherein said outlet
Pipe portion inserts in described resistant to urea nylon tube.
As further improved technical scheme of the present invention, described one-way throttle valve is also inserted into described resistant to urea nylon tube
In and be positioned at the downstream of described outlet duct portion.
As further improved technical scheme of the present invention, described heat-conducting layer includes masking foil.
As further improved technical scheme of the present invention, described urea tube also includes being wrapped in described inlet duct portion, institute
State the peripheral moulding of outlet duct portion and at least part of described bypass pipe assembly.
Present invention further teaches a kind of urea injection system, it includes in order to the carbamide of extracted urea solution from urea box
Pump assembly and in order to spray the urea nozzle of carbamide in the tail gas of electromotor, described urea injection system also includes aforesaid
Urea tube, wherein said fast patch plug is connected with described urea pump assembly, and described bypass pipe assembly is connected with described urea box
Logical, described carbamide outlet connection is connected with described urea nozzle.
As further improved technical scheme of the present invention, described urea pump assembly includes can forward and antiport
Gear pump.
Present invention further teaches the control method of a kind of urea injection system, it comprises the steps:
S1, when described urea pump assembly is started working, opens described urea nozzle；When system pressure reaches to arrange value
Time, close described urea nozzle；When the unlatching reaching described one-way throttle valve from described urea pump assembly carbamide pressure out
During pressure, open described one-way throttle valve to be back in described urea box by least part of carbamide；
S2, when described urea pump assembly normally works, from a described gear pump carbamide part out from described carbamide
Nozzle sprays, and unnecessary carbamide flows back to described urea box from described bypass pipe assembly；
S3, when the reversion pumpback of described gear pump, opens described urea nozzle, and the carbamide in described bypass pipe assembly is through institute
Stating one-way throttle valve reversely to end, the carbamide in carbamide manometer tube flows back into described urea box through described gear pump.
Compared to prior art, the present invention is by arranging one-way throttle valve, it is possible to returned by carbamide when system pressure is higher
Flow to urea box, play the protective effect to urea pump；It addition, play when urea pump pumpback reversely by effect, thus
The carbamide in carbamide manometer tube is enable to flow back into described urea box.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view that the present invention has the urea tube of one-way throttle function.
Fig. 2 is the top view after removing the resistance wire in Fig. 1.
Fig. 3 is the generalized section of line A-A along Fig. 2.
Fig. 4 is the partial enlarged drawing of circled portion in Fig. 3.
Fig. 5 is the schematic diagram of urea injection system of the present invention.
Detailed description of the invention
Please join shown in Fig. 1 to Fig. 4, present invention is disclosed a kind of urea tube 100 with one-way throttle function.Fig. 5 discloses
Having the urea injection system 200 of described urea tube 100, wherein said urea injection system 200, it includes in order to from carbamide
In case 300 extracted urea solution urea pump assembly 400 and in order to spray the urea nozzle of carbamide in the tail gas of electromotor
500。
Please join shown in Fig. 1 to Fig. 4, described urea tube 100 includes the urine that fast patch plug 1 is connected with described fast patch plug 1
Element outlet connection 2 and the bypass pipe assembly 3 being connected with described carbamide outlet connection 2.Described bypass pipe assembly 3 includes resistance to urine
Element nylon tube 31, be wrapped on described resistant to urea nylon tube 31 and in order to heat described resistant to urea nylon tube 31 resistance wire 32,
It is positioned at the periphery of described resistance wire 32 and in order to limit the heat-conducting layer 33 of described resistance wire 32, to be wrapped in described heat-conducting layer 33 periphery
Heat-insulation layer 34 and be wrapped in the corrugate sheath 35 of described heat-insulation layer 34 periphery.Described bypass pipe assembly 3 is provided with unidirectional
Choke valve 36.
Please join shown in Fig. 3 and Fig. 4, in illustrative embodiments of the present invention, described fast patch plug 1 is provided with and described carbamide
Outlet connection 2 alignment inlet duct portion 11 and be connected to going out between described inlet duct portion 11 and described carbamide outlet connection 2
Mouth pipe portion 12.Described outlet duct portion 12 inserts in described resistant to urea nylon tube 31.Described one-way throttle valve 36 is also inserted into described
In resistant to urea nylon tube 31 and be positioned at the downstream of described outlet duct portion 12, wherein the direction of arrow indication is carbamide normal reflow
Direction.
Described heat-conducting layer includes masking foil, to stop heat outwards to dissipate, improves the efficiency that heating is thawed.
Described urea tube 100 also includes being wrapped in described inlet duct portion 11, described outlet duct portion 12 and at least part of institute
State the peripheral moulding 4 of bypass pipe assembly 3.
Please join shown in Fig. 5, described fast patch plug 1 is connected with described urea pump assembly 400.Described bypass pipe assembly 3 with
Described urea box 300 is connected.Described carbamide outlet connection 2 is connected with described urea nozzle 500.Preferably, described carbamide
Pump assembly 400 includes can forward and the gear pump of antiport.
The control method of urea injection system 200 of the present invention comprises the steps:
S1, when described urea pump assembly 400 is started working, opens described urea nozzle 500；When system pressure reaches to set
When putting value, close described urea nozzle 500；When reaching described unidirectional joint from described urea pump assembly 400 carbamide pressure out
When flowing the unlatching pressure of valve 36, open described one-way throttle valve 36 to be back in described urea box 300 by least part of carbamide；
S2, when described urea pump assembly 400 normally works, from a described gear pump carbamide part out from described urine
Element nozzle 500 sprays, and unnecessary carbamide flows back to described urea box 300 from described bypass pipe assembly 3；
S3, when the reversion pumpback of described gear pump, opens described urea nozzle 500, the carbamide in described bypass pipe assembly 3
Reversely ending through described one-way throttle valve 36, the carbamide in carbamide manometer tube flows back into described urea box 300 through described gear pump.
The present invention is by arranging one-way throttle valve 36, it is possible to carbamide is back to urea box 300 when system pressure is higher,
Play the protective effect to urea pump.It addition, play when gear pump reversion pumpback reversely by effect so that carbamide pressure
Carbamide in solenoid can flow back into described urea box 300.
It addition, above example be merely to illustrate the present invention and and unrestricted technical scheme described in the invention, to this
The understanding of description should be based on person of ordinary skill in the field, although this specification is with reference to the above embodiments pair
Present invention has been detailed description, but, it will be understood by those within the art that, the technology of art
The present invention still can be modified or equivalent by personnel, and all are without departing from the technology of the spirit and scope of the present invention
Scheme and improvement thereof, all should contain in scope of the presently claimed invention.
Claims (8)
1. having a urea tube for one-way throttle function, it includes the carbamide that fast patch plug is connected with described fast patch plug
Outlet connection and the bypass pipe assembly being connected with described carbamide outlet connection, it is characterised in that: described bypass pipe assembly bag
Include resistant to urea nylon tube, be wrapped on described resistant to urea nylon tube and in order to heat the resistance wire of described resistant to urea nylon tube, position
In the periphery of described resistance wire and in order to limit described resistance wire heat-conducting layer, be wrapped in the peripheral heat-insulation layer of described heat-conducting layer with
And it is wrapped in the corrugate sheath that described heat-insulation layer is peripheral, described bypass pipe assembly is provided with one-way throttle valve.
2. urea tube as claimed in claim 1, it is characterised in that: described fast patch plug is provided with and described carbamide outlet connection pair
Neat inlet duct portion and be connected to the outlet duct portion between described inlet duct portion and described carbamide outlet connection, wherein said go out
Mouth pipe portion inserts in described resistant to urea nylon tube.
3. urea tube as claimed in claim 2, it is characterised in that: described one-way throttle valve is also inserted into described resistant to urea nylon
In pipe and be positioned at the downstream of described outlet duct portion.
4. urea tube as claimed in claim 1, it is characterised in that: described heat-conducting layer includes masking foil.
5. urea tube as claimed in claim 3, it is characterised in that: described urea tube also include being wrapped in described inlet duct portion,
Described outlet duct portion and the peripheral moulding of at least part of described bypass pipe assembly.
6. a urea injection system, it include the urea pump assembly in order to extracted urea solution from urea box and in order to
The tail gas of electromotor sprays the urea nozzle of carbamide, it is characterised in that: described urea injection system also includes such as claim 1
Urea tube described in any one in 5, wherein said fast patch plug is connected with described urea pump assembly, described bypass pipe
Assembly is connected with described urea box, and described carbamide outlet connection is connected with described urea nozzle.
7. urea injection system as claimed in claim 6, it is characterised in that: described urea pump assembly include can forward and
The gear pump of antiport.
8. a control method for urea injection system as claimed in claim 7, it comprises the steps:
S1, when described urea pump assembly is started working, opens described urea nozzle；When system pressure reaches to arrange value, close
Close described urea nozzle；When the unlatching pressure reaching described one-way throttle valve from described urea pump assembly carbamide pressure out
Time, open described one-way throttle valve to be back in described urea box by least part of carbamide；
S2, when described urea pump assembly normally works, from a described gear pump carbamide part out from described urea nozzle
Ejection, unnecessary carbamide flows back to described urea box from described bypass pipe assembly；
S3, when the reversion pumpback of described gear pump, opens described urea nozzle, and the carbamide in described bypass pipe assembly is through described list
Reversely ending to choke valve, the carbamide in carbamide manometer tube flows back into described urea box through described gear pump.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610948316.2A CN106285864A (en) | 2016-10-26 | 2016-10-26 | There is the urea tube of one-way throttle function, urea injection system and control method thereof |
| PCT/CN2017/104329 WO2018077005A1 (en) | 2016-10-26 | 2017-09-29 | Urea tube having one-way throttling function, urea spraying system and control method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610948316.2A CN106285864A (en) | 2016-10-26 | 2016-10-26 | There is the urea tube of one-way throttle function, urea injection system and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106285864A true CN106285864A (en) | 2017-01-04 |
Family
ID=57720459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610948316.2A Pending CN106285864A (en) | 2016-10-26 | 2016-10-26 | There is the urea tube of one-way throttle function, urea injection system and control method thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106285864A (en) |
| WO (1) | WO2018077005A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018077005A1 (en) * | 2016-10-26 | 2018-05-03 | 天纳克（苏州）排放系统有限公司 | Urea tube having one-way throttling function, urea spraying system and control method therefor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153497A (en) * | 2021-04-20 | 2021-07-23 | 无锡威孚力达催化净化器有限责任公司 | Self-adaptation adds fever type urea decomposition device |
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| DE102011076429A1 (en) * | 2011-05-25 | 2012-11-29 | Robert Bosch Gmbh | Dosing system for catalytic reduction of combustion engine of commercial vehicle, has pump connected with dosing unit tank by suction line, where conveyance direction of pump is reversed by reversal rotation direction of pump motor |
| CN103635665A (en) * | 2011-06-22 | 2014-03-12 | 罗伯特·博世有限公司 | Injection device |
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| CN204113401U (en) * | 2014-09-25 | 2015-01-21 | 陕西徳仕奥联汽车电子电器有限责任公司 | A kind of urea tube that can heat and be incubated |
| CN206360756U (en) * | 2016-10-26 | 2017-07-28 | 天纳克（苏州）排放系统有限公司 | Urea tube and its urea injection system with one-way throttle function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201891478U (en) * | 2010-12-02 | 2011-07-06 | 中国重汽集团济南动力有限公司 | Device for heating urea tank and pipeline of selective catalytic reduction (SCR) system by engine exhaust |
| JP5974431B2 (en) * | 2011-07-27 | 2016-08-23 | 株式会社Ihi | Denitration equipment |
| JP5880514B2 (en) * | 2013-10-02 | 2016-03-09 | 株式会社デンソー | Engine exhaust purification system |
| CN106285864A (en) * | 2016-10-26 | 2017-01-04 | 天纳克（苏州）排放系统有限公司 | There is the urea tube of one-way throttle function, urea injection system and control method thereof |
-
2016
- 2016-10-26 CN CN201610948316.2A patent/CN106285864A/en active Pending
-
2017
- 2017-09-29 WO PCT/CN2017/104329 patent/WO2018077005A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011076429A1 (en) * | 2011-05-25 | 2012-11-29 | Robert Bosch Gmbh | Dosing system for catalytic reduction of combustion engine of commercial vehicle, has pump connected with dosing unit tank by suction line, where conveyance direction of pump is reversed by reversal rotation direction of pump motor |
| CN103635665A (en) * | 2011-06-22 | 2014-03-12 | 罗伯特·博世有限公司 | Injection device |
| WO2014061377A1 (en) * | 2012-10-18 | 2014-04-24 | ボッシュ株式会社 | Reducing agent recovery control method, reducing agent supply device, and electronic control device |
| WO2015001858A1 (en) * | 2013-07-03 | 2015-01-08 | ボッシュ株式会社 | Reducing agent supply device and method of controlling same |
| CN204113401U (en) * | 2014-09-25 | 2015-01-21 | 陕西徳仕奥联汽车电子电器有限责任公司 | A kind of urea tube that can heat and be incubated |
| CN206360756U (en) * | 2016-10-26 | 2017-07-28 | 天纳克（苏州）排放系统有限公司 | Urea tube and its urea injection system with one-way throttle function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018077005A1 (en) * | 2016-10-26 | 2018-05-03 | 天纳克（苏州）排放系统有限公司 | Urea tube having one-way throttling function, urea spraying system and control method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018077005A1 (en) | 2018-05-03 |
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