CN211573624U - Urea injection system and vehicle - Google Patents
Urea injection system and vehicle Download PDFInfo
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- CN211573624U CN211573624U CN202020203097.7U CN202020203097U CN211573624U CN 211573624 U CN211573624 U CN 211573624U CN 202020203097 U CN202020203097 U CN 202020203097U CN 211573624 U CN211573624 U CN 211573624U
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- urea
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The utility model belongs to the technical field of vehicle emission processing apparatus, a urea injection system and vehicle is disclosed, urea injection system includes the urea jar, the air supply, three way connection, the urea nozzle, admission valve and blowback valve, the air supply communicates in the urea jar through the air inlet pipeline, three way connection's first interface passes through the drain pipe and communicates in the urea jar, three way connection's second kneck is provided with the check valve, the check valve communicates in the air supply through the blowback pipeline, the urea nozzle communicates in three way connection's third interface, the admission valve sets up on the air inlet pipeline, can adjust the break-make of air inlet pipeline, the blowback valve sets up on the blowback pipeline, can adjust the break-make of blowback pipeline, the vehicle includes foretell urea injection system. The utility model discloses, overall structure is simple, and the air supply can be used to spray the operation, can be used to the hydrops clearance again, has reduced the cost of system, has improved the reliability of system.
Description
Technical Field
The utility model relates to a vehicle discharges processing apparatus technical field, especially relates to a urea injection system and vehicle.
Background
In order to deal with the pollution of vehicle tail gas, a nitrogen oxide emission treatment device is configured on the existing vehicle, particularly a diesel engine vehicle, and the existing treatment device adopts a selective catalytic reduction technical route, namely a standard vehicle urea aqueous solution is injected into an after-treatment device of an exhaust system, ammonia generated by decomposition of the urea aqueous solution in the after-treatment device carries out selective catalytic reduction on nitrogen oxide in exhaust to generate harmless nitrogen and water, in the actual use process, a urea nozzle for injecting the urea aqueous solution is easy to generate effusion and crystal blockage, the subsequent use is influenced, and a back flushing device is required to be designed to clear the effusion for solving the problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a urea injection system and vehicle can utilize the power supply in the injection operation to carry out the hydrops clearance.
To achieve the purpose, the utility model adopts the following technical proposal:
a urea injection system comprising:
a urea tank;
the air source is communicated with the urea tank through an air inlet pipeline;
the first interface of the three-way joint is communicated with the urea tank through a liquid outlet pipeline, the second interface of the three-way joint is provided with a one-way valve, the one-way valve is communicated with the gas source through a back flushing pipeline, and the one-way valve prevents gas and liquid in the three-way joint from flowing to the back flushing pipeline;
the urea nozzle is communicated with a third interface of the three-way joint;
the air inlet valve is arranged on the air inlet pipeline and can adjust the on-off of the air inlet pipeline;
and the back flushing valve is arranged on the back flushing pipeline and can adjust the on-off of the back flushing pipeline.
Preferably, the three-way joint is attached to the urea nozzle.
Preferably, the air inlet valve and the blowback valve are both solenoid valves, are respectively and electrically connected to an electronic control unit on the vehicle, and operate under the control of the electronic control unit.
Preferably, the exhaust device further comprises an exhaust valve, and the exhaust valve is communicated with the urea tank through an exhaust pipeline.
Preferably, the exhaust valve is a manual valve.
Preferably, the system further comprises a pressure sensor capable of detecting the pressure in the urea tank, wherein the pressure sensor is electrically connected to an electronic control unit on the vehicle.
Preferably, the urea tank further comprises a sealing cover, the sealing cover is arranged at an opening of the urea tank to seal the urea tank, and the air inlet pipeline and the liquid outlet pipeline are communicated with the urea tank through the sealing cover respectively.
Preferably, the cover is provided with a temperature sensor capable of detecting a temperature in the urea tank.
Preferably, a liquid level sensor is arranged on the sealing cover, and the liquid level sensor can detect the liquid level in the urea tank.
A vehicle comprises the urea injection system.
The utility model has the advantages that:
the admission valve is opened, when the blowback valve is closed, the air supply can build pressure to the urea jar, make follow-up urea jar can spray urea aqueous solution through the urea nozzle, and when the vehicle shut down, can close the admission valve, open the blowback valve, utilize the air supply, blow back the urea jar with the hydrops in the liquid outlet pipe way, blow off the hydrops in the urea nozzle, effectively avoided the hydrops to freeze and the spalling problem and the hydrops crystallization that lead to and the jam problem that leads to, overall structure is simple, the air supply can be used to spray the operation, can be used to the hydrops clearance again, the cost of system is reduced, the reliability of system is improved.
Drawings
Fig. 1 is a schematic structural diagram of a urea injection system according to an embodiment of the present invention.
In the figure:
1. a urea tank; 2. a gas source; 3. a three-way joint; 4. a urea nozzle; 5. an intake valve; 6. a blowback valve; 7. an exhaust valve; 8. a pressure sensor; 9. and (7) sealing the cover.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts throughout, or parts having the same or similar functions. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly and can include, for example, fixed or removable connections, mechanical or electrical connections, direct connections, indirect connections through an intermediary, communication between two elements, or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include both the first and second features being in direct contact, and may also include the first and second features being in contact, not in direct contact, but with another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
As shown in figure 1, the utility model provides a urea injection system, including urea jar 1, air supply 2, three way connection 3, urea nozzle 4, admission valve 5 and blowback valve 6. Wherein, air supply 2 communicates in urea tank 1 through the pipeline of admitting air, three way connection 3 has three interface, be first interface respectively, second interface and third interface, three way connection 3's first interface communicates in urea tank 1 through going out the liquid pipeline, three way connection 3's second kneck is provided with the check valve, the check valve communicates in air supply 2 through the blowback pipeline, the check valve prevents the interior gas-liquid flow of three way connection 3 to flow to the blowback pipeline, urea nozzle 4 communicates in three way connection 3's third interface, admission valve 5 sets up on the admission line, can adjust the break-make of admission line, blowback valve 6 sets up on the blowback pipeline, can adjust the break-make of blowback pipeline.
The utility model discloses in, admission valve 5 is opened, when blowback valve 6 is closed, pressure can be built to urea jar 1 to air supply 2, make follow-up urea jar 1 can spray urea aqueous solution through urea nozzle 4, and when the vehicle shut down, admission valve 5 can be closed, open blowback valve 6, utilize air supply 2, blow back urea jar 1 with the hydrops in the liquid outlet pipe way, blow off the hydrops in urea nozzle 4, the bloated problem of splitting that has effectively avoided the hydrops to freeze and lead to and the jam problem that the hydrops crystallization leads to, the overall structure is simple, air supply 2 can be used to spray the operation, can be used to the hydrops clearance again, the cost of system is reduced, the reliability of system is improved.
Alternatively, the three-way joint 3 is installed on the urea nozzle 4, so that the urea aqueous solution which is as little as possible when the accumulated liquid is cleaned can be ensured to be blown into the post-treatment equipment, and the safety and the reliability of the post-treatment equipment are improved.
Specifically, the intake valve 5 and the blowback valve 6 are electromagnetic valves, and are respectively electrically connected to an electronic control unit on the vehicle, and operate under the control of the electronic control unit. By the arrangement, the electronic control unit on the vehicle can timely and accurately adjust the operation of the urea injection system according to the state of the vehicle.
Optionally, the urea injection system further comprises an exhaust valve 7, the exhaust valve 7 being in communication with the urea tank 1 via an exhaust line. In the present embodiment, the exhaust valve 7 is a manual valve, and when adding the urea aqueous solution to the urea tank 1 or performing other operations, the user can discharge the compressed gas in the urea tank 1 in advance through the exhaust valve 7, thereby ensuring the safety of the subsequent operations.
Specifically, the urea injection system further includes a pressure sensor 8, the pressure sensor 8 being capable of detecting the pressure inside the urea tank 1, the pressure sensor 8 being electrically connected to an electronic control unit on the vehicle.
Optionally, the urea injection system further includes a sealing cover 9, the sealing cover 9 is disposed at an opening of the urea tank 1 to seal the urea tank 1, the air inlet pipeline and the liquid outlet pipeline are respectively communicated with the urea tank 1 through the sealing cover 9, the pressure sensor 8 is mounted on the sealing cover 9, an open end of the air inlet pipeline is located above the liquid level, and an open end of the liquid outlet pipeline is located below the liquid level.
Specifically, the lid 9 is provided with a temperature sensor that can detect the temperature inside the urea tank 1.
More specifically, a liquid level sensor is provided on the cover 9, and the liquid level sensor can detect the liquid level in the urea tank 1.
The pressure sensor 8, the temperature sensor and the liquid level sensor are all conventional devices in the field, and the specific structure and the working principle thereof are not described herein again.
The utility model also provides a vehicle, including foretell urea injection system.
The utility model discloses a during urea injection system in-service use, the working procedure as follows:
and (3) pressure building process: the vehicle starts, and admission valve 5 opens, and gas source 2 injects gas in to urea jar 1 through the intake pipe way, reaches target pressure in the urea jar 1, and pressure sensor 8 transmits the electronic control unit on the vehicle with the pressure value, and electronic control unit control admission valve 5 closes.
And (3) injection process: the urea nozzle 4 is opened to inject the urea aqueous solution according to the instruction of the electronic control unit.
A back flushing process: when the vehicle stops, the blowback valve 6 is firstly opened to blow back accumulated liquid in the liquid outlet pipeline to the urea tank 1, and then the urea nozzle 4 is opened at the maximum duty ratio to blow out urea in the urea nozzle 4. The urea nozzle 4 has no residue, the problem of urea freezing and bursting in winter can not occur, and the problem of urea crystallization and blockage in the urea nozzle 4 can not occur.
And (3) an exhaust process: when exhaust is required, the exhaust valve 7 is manually opened to expel the compressed gas from the urea tank 1.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A urea injection system, comprising:
a urea tank (1);
the gas source (2) is communicated with the urea tank (1) through a gas inlet pipeline;
the first interface of the three-way joint (3) is communicated with the urea tank (1) through a liquid outlet pipeline, the second interface of the three-way joint (3) is provided with a one-way valve, the one-way valve is communicated with the gas source (2) through a back flushing pipeline, and the one-way valve prevents gas and liquid in the three-way joint (3) from flowing to the back flushing pipeline;
the urea nozzle (4) is communicated with a third interface of the three-way joint (3);
the air inlet valve (5) is arranged on the air inlet pipeline and can adjust the on-off of the air inlet pipeline;
and the back flushing valve (6) is arranged on the back flushing pipeline and can adjust the on-off of the back flushing pipeline.
2. Urea injection system according to claim 1, characterized in that the three-way joint (3) is mounted on the urea nozzle (4).
3. Urea injection system according to claim 1, characterized in that the inlet valve (5) and the blow-back valve (6) are solenoid valves, each being electrically connected to an electronic control unit on the vehicle, acting under the control of said electronic control unit.
4. Urea injection system according to claim 1, characterized in that it further comprises an exhaust valve (7), which exhaust valve (7) communicates with the urea tank (1) via an exhaust line.
5. Urea injection system according to claim 4, characterized in that the exhaust valve (7) is a manual valve.
6. Urea injection system according to claim 1, characterized in that it further comprises a pressure sensor (8), the pressure sensor (8) being able to detect the pressure inside the urea tank (1), the pressure sensor (8) being electrically connected to an electronic control unit on board the vehicle.
7. A urea injection system according to any one of claims 1-6, further comprising a cover (9), wherein the cover (9) is disposed at an opening of the urea tank (1) to seal the urea tank (1), and the inlet line and the outlet line are respectively communicated with the urea tank (1) through the cover (9).
8. Urea injection system according to claim 7, characterized in that a temperature sensor is arranged on the cover (9), which temperature sensor is able to detect the temperature inside the urea tank (1).
9. Urea injection system according to claim 7, characterized in that a level sensor is arranged on the closure cap (9), which level sensor is able to detect the liquid level in the urea tank (1).
10. A vehicle comprising a urea injection system according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020203097.7U CN211573624U (en) | 2020-02-24 | 2020-02-24 | Urea injection system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020203097.7U CN211573624U (en) | 2020-02-24 | 2020-02-24 | Urea injection system and vehicle |
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| CN211573624U true CN211573624U (en) | 2020-09-25 |
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| CN202020203097.7U Active CN211573624U (en) | 2020-02-24 | 2020-02-24 | Urea injection system and vehicle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648052A (en) * | 2020-12-25 | 2021-04-13 | 一汽解放汽车有限公司 | Urea tank pressure maintaining control system and maintenance method thereof |
| CN113738482A (en) * | 2021-09-28 | 2021-12-03 | 一汽解放汽车有限公司 | Urea supply mechanism, urea supply system and vehicle |
| CN113775393A (en) * | 2021-09-18 | 2021-12-10 | 一汽解放汽车有限公司 | Back-flushing three-way structure, urea injection system, back-flushing emptying method and vehicle |
| CN113803135A (en) * | 2021-09-28 | 2021-12-17 | 一汽解放汽车有限公司 | Gas drive system and purging function control method thereof |
| CN114985143A (en) * | 2022-06-01 | 2022-09-02 | 一汽解放汽车有限公司 | Liquid atomization system, vehicle and liquid atomization method |
-
2020
- 2020-02-24 CN CN202020203097.7U patent/CN211573624U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648052A (en) * | 2020-12-25 | 2021-04-13 | 一汽解放汽车有限公司 | Urea tank pressure maintaining control system and maintenance method thereof |
| CN113775393A (en) * | 2021-09-18 | 2021-12-10 | 一汽解放汽车有限公司 | Back-flushing three-way structure, urea injection system, back-flushing emptying method and vehicle |
| CN113738482A (en) * | 2021-09-28 | 2021-12-03 | 一汽解放汽车有限公司 | Urea supply mechanism, urea supply system and vehicle |
| CN113803135A (en) * | 2021-09-28 | 2021-12-17 | 一汽解放汽车有限公司 | Gas drive system and purging function control method thereof |
| CN114985143A (en) * | 2022-06-01 | 2022-09-02 | 一汽解放汽车有限公司 | Liquid atomization system, vehicle and liquid atomization method |
| CN114985143B (en) * | 2022-06-01 | 2024-03-19 | 一汽解放汽车有限公司 | Liquid atomization system, vehicle and liquid atomization method |
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