CN114635771B - Urea injection pipe joint seat, urea injection pipeline structure and vehicle - Google Patents
Urea injection pipe joint seat, urea injection pipeline structure and vehicle Download PDFInfo
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- CN114635771B CN114635771B CN202210174189.0A CN202210174189A CN114635771B CN 114635771 B CN114635771 B CN 114635771B CN 202210174189 A CN202210174189 A CN 202210174189A CN 114635771 B CN114635771 B CN 114635771B
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- urea injection
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- 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
- F01N3/18—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 methods of operation; Control
- F01N3/20—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 methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
- F01N13/1827—Sealings specially adapted for exhaust systems
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- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
- F01N13/1844—Mechanical joints
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- 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
- F01N3/18—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 methods of operation; Control
- F01N3/20—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 methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
- F01N3/2013—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
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- 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
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- 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
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
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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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
- Pipe Accessories (AREA)
Abstract
The invention relates to a urea injection pipe joint seat, a urea injection pipeline structure and a vehicle, wherein the urea injection pipe joint seat comprises a joint seat body, and a channel for plugging a urea nozzle joint is formed in the joint seat body; a leakage preventing plug provided in the passage and having an elastic sealing portion capable of opening and closing the passage, the elastic sealing portion being capable of opening to allow urea liquid in the passage to flow toward the urea nozzle joint when the urea nozzle joint is inserted into the passage; when the urea nozzle joint is pulled out from the channel, the elastic sealing part closes the channel and is used for sealing urea liquid in the channel. According to the technical scheme, in the process of inserting the urea nozzle joint into the channel, the elastic sealing part is opened, and the channel is communicated with the urea nozzle joint so that urea liquid can flow to the urea nozzle joint; when the urea nozzle joint is pulled out of the channel, the elastic sealing part closes the channel, so that urea liquid in the urea injection pipe joint seat is prevented from being sprayed to flow outwards, the cost is saved, and the environment is protected.
Description
Technical Field
The disclosure relates to the technical field of automobiles, in particular to a urea injection pipe joint seat, a urea injection pipeline structure and a vehicle.
Background
The urea nozzle is arranged on an exhaust purification catalyst of an automobile engine, and in the driving process, the phenomenon that the urea nozzle is dragged along with an interface of the urea nozzle and an injection pipeline easily occurs, so that the urea injection pipe is separated from the urea nozzle, the urea sprays outwards, certain environmental pollution is caused while economic loss is caused, and the risk of exceeding the standard of vehicle emission after the urea is empty exists.
Disclosure of Invention
An object of the present disclosure is to provide a urea injection pipe joint seat that can solve urea nozzle and urea injection line link and break away from and lead to urea to spray outflow problem.
Another object of the present disclosure is to provide a urea injection line structure to which the urea injection line joint seat is applied, and a vehicle to which the urea injection line structure is applied.
To achieve the above object, a first aspect of the present disclosure provides a urea injection pipe joint seat, comprising:
the urea nozzle comprises a joint seat body, wherein a channel for plugging a urea nozzle joint is formed in the joint seat body;
a leakage preventing plug provided in the passage, and including an elastic sealing portion capable of opening and closing the passage, the elastic sealing portion being capable of opening to allow urea liquid in the passage to flow toward the urea nozzle joint when the urea nozzle joint is inserted into the passage; when the urea nozzle joint is pulled out from the channel, the elastic sealing part closes the channel and is used for sealing urea liquid in the channel.
Optionally, the resilient seal is configured as a resilient conical ring and a plurality of supports;
the elastic conical ring comprises a first opening and a second opening, and the aperture of the first opening is larger than that of the second opening; the circumference of the first opening is connected with the circumferential side wall of the channel, and the second opening extends towards the inner direction of the channel;
the support members are arranged between the first opening and the second opening, are in circumferential direction of the elastic conical ring and are mutually abutted, and the support members face one end of the second opening and are mutually abutted to seal the second opening.
Optionally, the number of the supporting pieces is three, and the three supporting pieces enclose a conical structure matched with the inner side wall of the elastic conical ring.
Optionally, the elastic sealing part is configured as a plurality of sealing flaps connected to a circumference of the passage and extending toward a center direction of the passage, the plurality of sealing flaps being recessed toward an inner direction of the passage and being opened in a circumferential direction when the urea nozzle joint is inserted into the passage; when the urea nozzle adapter is pulled out of the channel, the plurality of sealing flaps rebound to seal the channel.
Optionally, the leakage-proof plug further comprises a cylinder part, the elastic sealing part is connected to the circumference of the inner side wall of the cylinder part, and the outer side wall of the cylinder part is connected with the inner wall of the channel.
Optionally, the cylinder portion is integrally formed with the elastic sealing portion.
Optionally, the leakage prevention plug further comprises a heating assembly, wherein the heating assembly is arranged in the channel and located in the circumferential direction of the elastic sealing part.
Optionally, the heating assembly is configured as a heating ring, and when the urea nozzle adapter is inserted into the channel, a side wall of the elastic sealing part facing the inside of the channel is attached to an inner side wall of the heating ring.
In a second aspect of the disclosure, a urea injection line structure is provided, including a urea nozzle joint and the urea injection pipe joint seat described above.
In a third aspect of the present disclosure, a vehicle is provided that includes the urea injection line structure described above.
Through the technical scheme, the leakage-proof plug is arranged in the channel inside the joint seat body, when the urea nozzle joint needs to be connected with the urea injection pipe joint seat, the urea nozzle joint is inserted into the channel, the elastic sealing part is opened in the inserting process, the channel is communicated with the urea nozzle joint, and urea liquid inside the joint seat body can flow to the urea nozzle joint; when the urea nozzle joint is pulled out of the channel, the elastic sealing part can close the channel, so that the urea liquid in the urea nozzle joint is sealed, the urea liquid in the urea injection pipe joint seat is prevented from being sprayed to flow outwards, the cost is saved, and the environment is protected.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:
FIG. 1 is a block diagram of a urea injection pipe joint seat provided by some embodiments of the present disclosure;
FIG. 2 is a cross-sectional view of a urea injection tube joint seat based on FIG. 1;
FIG. 3 is a cross-sectional view of a leak-proof plug of a urea injection tube nipple provided by some embodiments of the present disclosure;
FIG. 4 is a schematic illustration of the connection of an elastic conical ring of a urea injection tube nipple with a barrel provided by some embodiments of the present disclosure;
FIG. 5 is an exploded schematic view of a leak-proof plug of a urea injection tube nipple provided by some embodiments of the present disclosure;
FIG. 6 is a schematic illustration of a urea nozzle adapter insert leak-proof plug of a urea injection tube adapter provided by some embodiments of the present disclosure;
FIG. 7 is a cross-sectional view of a leak-proof plug inserted based on the urea nozzle adapter of FIG. 6;
FIG. 8 is a top view of a leak-proof plug of a urea injection pipe nipple provided by some embodiments of the present disclosure;
fig. 9 is a cross-sectional view of the leak-proof plug based on fig. 8.
Description of the reference numerals
10-a connector base body; 11-channel; 20-leakage prevention plugs; 30-urea nozzle joint;
210-a barrel; 220-an elastic conical ring; 221-a first opening; 222-a second opening; 230-a support; 240-sealing flaps; 250-heating ring.
Detailed Description
Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.
In the present disclosure, unless otherwise indicated, terms of orientation such as "upper, lower, left, right" and the like are generally defined with reference to the orientation of the drawing figures; "inner and outer" means the inner and outer of the corresponding component profile; "distal" and "proximal" refer to a respective structure or component distal from or proximal to another structure or component; in addition, it should be noted that terms such as "first, second", etc. are used to distinguish one element from another element.
As shown in fig. 1 to 9, a first aspect of the present disclosure provides a urea injection pipe joint seat, the urea injection pipe joint seat comprising: the urea nozzle comprises a joint seat body 10, wherein a channel 11 for plugging a urea nozzle joint 30 is formed in the joint seat body 10; a leakage preventing plug 20 provided in the passage 11, and having an elastic sealing portion capable of opening and closing the passage 11, the elastic sealing portion being capable of opening to allow urea liquid in the passage 11 to flow toward the urea nozzle joint 30 when the urea nozzle joint 30 is inserted into the passage 11; when the urea nozzle nipple 30 is pulled out from the passage 11, the elastic sealing portion closes the passage 11 to seal the urea liquid in the passage 11.
Through the above technical scheme, the leakage preventing plug 20 is arranged in the channel 11 inside the joint seat body 10, when the urea nozzle joint 30 needs to be connected with the urea injection joint seat, the urea nozzle joint 30 is inserted into the channel 11, the elastic sealing part is opened in the inserting process, the channel 11 is communicated with the urea nozzle joint 30, and urea liquid inside the joint seat body 10 can flow to the urea nozzle joint 30; when the urea nozzle joint 30 is pulled out of the channel 11, the elastic sealing part can close the channel 11, so that the urea liquid in the urea nozzle joint is sealed, the urea liquid in the urea injection pipe joint seat is prevented from being sprayed to flow outwards, the cost is saved, and the environment is protected.
The resilient seal may be configured in any manner, as shown in fig. 3, 4, and 5, and in some embodiments of the present disclosure is configured as a resilient conical ring 220 and a plurality of supports 230; wherein the elastic conical ring 220 comprises a first opening 221 and a second opening 222, and the aperture of the first opening 221 is larger than that of the second opening 222; the first opening 221 is circumferentially connected to the circumferential side wall of the channel 11, and may be specifically and fixedly connected to the circumferential side wall of the channel 11, or may be connected to the circumferential side wall of the channel 11 through a corresponding sealing structure, so that the circumferential direction of the elastic sealing portion and the circumferential side wall of the channel 11 are connected without any gap, and urea solution in the channel 11 cannot pass through the connection between the two, and meanwhile, the second opening 222 extends toward the inner direction of the channel 11, that is, the first opening 221 of the elastic conical ring 220 is located at the upper end of the channel 11, and the second opening 222 is located inside the channel 11, and when the urea nozzle joint 30 is inserted into the channel 11, the urea nozzle enters the channel 11 through the first opening 221 of the elastic sealing portion and then through the second opening 222 which is expanded after elastic deformation and is communicated with the channel 11.
The plurality of supporting members 230 are disposed in the circumferential direction of the elastic conical ring 220 between the first opening 221 and the second opening 222 and abut against each other, wherein the plurality of supporting members 230 may be disposed in the circumferential direction of the elastic conical ring 220 by bonding or other fixing connection, along the first opening 221 towards the second direction, the plurality of supporting members 230 are closely attached to each other and abut against each other, for supporting a side of the elastic conical ring 220 away from the channel 11, and one ends of the plurality of supporting members 230 towards the second opening 222 are attached to each other, so as to seal the second opening 222, so that urea solution in the channel 11 cannot flow out through the second opening 222. The urea nozzle joint 30 is inserted by the first opening 221 of the elastic cone ring 220 and then abuts against the plurality of supporting pieces 230, and as the urea nozzle joint 30 moves, the plurality of supporting pieces 230 are separated from each other and gradually opened in the circumferential direction of the elastic cone ring 220 together with the elastic cone ring 220, the second opening 222 is gradually enlarged, and the urea nozzle joint 30 is inserted into the inside of the passage 11 by the second opening 222; when the urea nozzle joint 30 is pulled out or separated from the inside of the channel 11, the second opening 222 elastically returns to the initial state, and the plurality of supporting members 230 shrink along with the elastic conical ring 220 and are mutually abutted in the circumferential direction, and meanwhile, the supporting members 230 mutually adhere to each other in the second opening 222 and seal the second opening 222, so that the urea bottom is prevented from flowing out. Because the urea nozzle joint 30 is pulled out or accidentally pulled out, the elastic conical ring 220 may turn outwards along with the urea nozzle joint 30, so that the channel 11 cannot be sealed, meanwhile, the pressure inside the channel 11 continues to exist, only the elastic conical ring 220 may not be capable of achieving sealing, and the plurality of supporting pieces 230 are mutually abutted in the circumferential direction, so that the elastic conical ring 220 is prevented from turning outwards, and urea liquid leakage caused by overlarge pressure in the channel 11 is avoided.
When the urea nozzle joint 30 is inserted, the elastic conical ring 220 and the urea nozzle joint 30 can be tightly combined, and due to the supporting effect of the supporting piece 230 on the elastic conical ring 220, the elastic conical ring 220 can be manufactured into a structural member with smaller thickness, so that gaps between the urea nozzle joint 30 and the pipe wall of the channel 11 are greatly reduced, an important sealing effect is achieved, meanwhile, the reverse suction process is ensured to be more thorough, and the crystallization problem caused by residual urea can be effectively reduced. When the urea nozzle falls off or separates, the resilient conical ring 220 springs back shut rapidly and prevents the urea solution under greater pressure from continuing to flow out of the channel 11, supported by the support 230. At this time, the urea pump controller automatically stops pressurization and reports corresponding faults when detecting the increase of the injection pressure, and prompts a driver to check the urea pipeline.
It should be noted that, the supporting member 230 may be made of metal with good heat conduction.
In some embodiments of the present disclosure, the number of the supporting members 230 is three, the sizes of the three supporting members 230 are the same, and the three supporting members 230 are uniformly distributed on the inner side wall of the elastic conical ring 220, and the three supporting members 230 enclose a conical structure adapted to the inner side wall of the elastic conical ring 220. When the urea nozzle joint 30 is inserted, the parts of the three supporting pieces 230 supporting the elastic conical ring 220 are opened to three directions, which mainly plays a role in supporting and lubricating, and when the urea nozzle joint 30 is pulled out or falls off, the three supporting pieces 230 can be rapidly closed under the elastic force of the elastic conical ring 220, so that the spraying outflow of urea liquid in the urea injection pipe joint seat is prevented.
In other embodiments of the present disclosure, as shown in fig. 8 and 9, the elastic sealing part is configured as a plurality of sealing flaps 240, the plurality of sealing flaps 240 are connected to the circumference of the passage 11 and extend toward the center direction of the passage 11, and when the urea nozzle joint 30 is inserted into the passage 11, the plurality of sealing flaps 240 are recessed toward the inside direction of the passage 11 and are opened in the circumferential direction; when the urea nozzle adapter 30 is pulled out of the channel 11, the plurality of sealing flaps 240 rebound to seal the channel 11. Specifically, the sealing petals 240 can be three, four, five, six, eight, or more. For example, in the present disclosure, an eight-flap is taken as an example, the sealing flaps 240 are in a fan-shaped structure with the center of the channel 11 as the center along the insertion direction of the urea nozzle joint 30, wherein the fan-shaped sides are connected with the circumference of the channel 11, two sides of each sealing flap 240 respectively abut against the sides of the adjacent sealing flaps 240 and seal the channel 11, when the urea nozzle joint 30 is inserted into the channel 11, the plurality of sealing flaps 240 elastically recess toward the inside of the channel 11 and open in the circumferential direction, and when the urea nozzle joint 30 is inserted into the channel 11, the plurality of sealing flaps 240 can also seal the circumference of the urea nozzle joint 30, and when the urea nozzle joint 30 is pulled out or dropped off, the plurality of sealing flaps 240 rebound and seal the channel 11, thereby also avoiding the urea liquid from spraying.
As shown in fig. 3, 4 and 5, in some embodiments of the present disclosure, the leakage preventing plug 20 may further include a cylinder portion 210, the elastic sealing portion is connected to the inner sidewall circumference of the cylinder portion 210, and the outer sidewall of the cylinder portion 210 is connected to the inner wall of the channel 11. When the elastic sealing portion is configured as the elastic conical ring 220 and the plurality of supporting members 230, the outer sidewall at the first opening 221 of the elastic conical ring 220 is connected with the inner sidewall of the first end of the cylindrical portion 210, the second opening 222 of the elastic conical ring 220 extends toward the second end direction of the cylindrical portion 210, and the outer sidewall of the cylindrical portion 210 is connected with the inner wall of the channel 11 of the joint seat body 10, which may specifically be fixedly connected or detachably connected. As shown in fig. 8 and 9, when the elastic sealing portion is configured as a plurality of sealing flaps 240, each sealing flap 240 is connected to the inner side wall of the cylinder portion 210, and the outer side wall of the cylinder portion 210 is connected to the inner wall of the passage 11 of the joint base body 10.
In some embodiments, the barrel 210 is integrally formed with the elastomeric seal and may be made of elastomeric materials such as elastomeric rubber, polyurethane, and the like. The materials used for the cylindrical body 210 and the elastic sealing portion should have high durability, urea corrosion resistance, and a certain high temperature resistance.
Residual urea is easy to exist at the joint of the urea injection pipeline joint seat and the urea nozzle joint 30, urea liquid can not be thawed for a long time after being frozen in a low-temperature area, and the urea liquid can not be liquefied and injected into a catalyst to perform catalytic reduction of nitrogen oxides, so that emission exceeds standard. In the related art, the urea injection pipeline joint seat and the urea nozzle joint 30 are fixed by using quick-connection connectors, the heating resistance wire is wrapped in the peripheral pipeline of the joint, when the low-temperature environment needs to be heated, the heating resistance wire is heated to achieve the defrosting effect, the heating power at the joint of the urea pipe in the low-temperature area is insufficient, the heat conduction capacity of the wall of the urea pipe is limited and can not be quickly defrosted, and the fault-reporting torsion limiting and the emission exceeding standard are caused.
To solve the above-described problems in the related art, in some embodiments of the present disclosure, the leakage preventing plug 20 further includes a heating assembly provided in the passage 11 at a circumference of the elastic sealing portion.
The heating assembly may be configured in any manner, as shown in fig. 3, and in some embodiments disclosed, the heating assembly is configured as a heating ring 250, with the side walls of the elastomeric seal facing the interior of the passageway 11 conforming to the inner side walls of the heating ring 250 when the urea nozzle adapter 30 is inserted into the passageway 11. Wherein, the heating ring 250 is located between the cylinder portion 210 and the elastic conical ring 220, when the urea nozzle joint 30 is inserted, after the elastic conical ring 220 is stressed to expand in the circumferential direction, the elastic conical ring 220 is attached to the heating ring 250 towards the circumferential side wall inside the cylinder portion 210, and when urea solution in a cold region needs to be thawed, the heating ring 250 is started, so that frost and crystals at the joint can be thawed rapidly. It should be noted that the heating ring 250 may be a resistance wire heating manner or an induction heating manner, so as to satisfy the heating and thawing of urea solution, which is not limited in the disclosure.
In summary, the urea injection pipe joint seat provided by the embodiment of the disclosure has the advantages that under the condition that the original quick-plug structure connection is not affected, the sealing performance of the joint is obviously improved, the leakage of urea liquid during the leakage of the urea nozzle joint 30 can be effectively prevented, the quick deicing and thawing can be realized in a short time under the low-temperature condition, the urea injection pipeline is enabled to respond in time, and the effect of nitrogen and oxygen pollutants is effectively reduced.
In a second aspect of the present disclosure, a urea injection line structure is provided, comprising a urea nozzle adapter 30 and the urea injection line adapter described above. The urea nozzle joint 30 is detachably connected with the urea injection pipe joint seat, and when the urea nozzle joint 30 is pulled out or falls off from the urea injection pipe joint seat, the leakage-proof plug 20 in the urea nozzle joint 30 can seal the channel 11 of the joint seat body 10 of the urea injection pipe joint seat, so that the spraying outflow of urea liquid is avoided.
In a third aspect of the present disclosure, a vehicle is provided, which includes the urea injection line structure described above, and therefore, the vehicle also has the advantages of the urea injection line structure described above, and will not be described again here.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.
In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.
Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.
Claims (9)
1. A urea injection tube nipple mount, comprising:
the urea nozzle comprises a joint seat body (10), wherein a channel (11) for plugging a urea nozzle joint (30) is formed in the joint seat body (10);
a leakage prevention plug (20) provided in the passage (11) and having an elastic sealing portion capable of opening and closing the passage (11), the elastic sealing portion being capable of opening to allow urea liquid in the passage (11) to flow toward the urea nozzle joint (30) when the urea nozzle joint (30) is inserted into the passage (11); when the urea nozzle joint (30) is pulled out from the channel (11), the elastic sealing part closes the channel (11) and is used for sealing urea liquid in the channel (11);
the resilient seal is configured as a resilient conical ring (220) and a plurality of supports (230);
the elastic conical ring (220) comprises a first opening (221) and a second opening (222), and the aperture of the first opening (221) is larger than the aperture of the second opening (222); the circumference of the first opening (221) is connected with the circumference side wall of the channel (11), and the second opening (222) extends towards the inner direction of the channel (11);
the plurality of supporting pieces (230) are arranged between the first opening (221) and the second opening (222), the elastic conical rings (220) are circumferentially abutted against each other, and one ends of the plurality of supporting pieces (230) facing the second opening (222) are mutually attached to each other so as to seal the second opening (222).
2. The urea injection pipe nipple according to claim 1, characterized in that the number of said support elements (230) is three, three of said support elements (230) enclosing a conical structure adapted to the inner side wall of said elastic conical ring (220).
3. The urea injection pipe joint seat according to claim 1, characterized in that the elastic sealing part is configured as a plurality of sealing flaps (240), the plurality of sealing flaps (240) being connected to the circumference of the channel (11) and extending in the direction of the center of the channel (11), the plurality of sealing flaps (240) being recessed in the inner direction of the channel (11) and opening in the circumferential direction when the urea nozzle joint (30) is inserted into the channel (11); when the urea nozzle adapter (30) is pulled out of the channel (11), the plurality of sealing flaps (240) rebound to seal the channel (11).
4. The urea injection pipe joint seat according to claim 1, characterized in that the leakage prevention plug (20) further comprises a cylinder (210), the elastic sealing portion is connected to the inner side wall circumference of the cylinder (210), and the outer side wall of the cylinder (210) is connected to the inner wall of the channel (11).
5. The urea injection pipe nipple according to claim 4, characterized in that said barrel (210) is integrally formed with said elastic sealing portion.
6. Urea injection pipe nipple according to any of claims 1-5, characterized in that the leakage prevention plug (20) further comprises a heating assembly provided in the channel (11) in the circumferential direction of the elastic seal.
7. The urea injection pipe nipple according to claim 6, characterized in that the heating assembly is configured as a heating ring (250), the side wall of the elastic sealing portion facing the inside of the channel (11) being fitted to the inside wall of the heating ring (250) when the urea nozzle nipple (30) is inserted into the channel (11).
8. A urea injection line structure, characterized by comprising a urea nozzle nipple (30) and a urea injection line nipple according to any one of claims 1-7.
9. A vehicle comprising the urea injection line structure of claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210174189.0A CN114635771B (en) | 2022-02-24 | 2022-02-24 | Urea injection pipe joint seat, urea injection pipeline structure and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210174189.0A CN114635771B (en) | 2022-02-24 | 2022-02-24 | Urea injection pipe joint seat, urea injection pipeline structure and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114635771A CN114635771A (en) | 2022-06-17 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017211119A1 (en) * | 2016-06-06 | 2017-12-14 | 天纳克（苏州）排放***有限公司 | Integrated apparatus, exhaust gas post-processing system, and control method |
| CN107916973A (en) * | 2017-11-29 | 2018-04-17 | 东风商用车有限公司 | A kind of SCR urea sprays protection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITTO20040524A1 (en) * | 2004-07-27 | 2004-10-27 | Borla Ind | VALVE CONNECTOR FOR MEDICAL INFUSION LINES |
| DK2189633T3 (en) * | 2008-11-22 | 2012-02-20 | Grundfos Management As | Device for discharging urea solution to an exhaust gas line |
| US9719395B2 (en) * | 2011-05-10 | 2017-08-01 | Albonair Gmbh | Component carrier for a dosing system |
| CN204327245U (en) * | 2014-11-17 | 2015-05-13 | 潍柴动力股份有限公司 | Urea pipe joint |
| KR101805701B1 (en) * | 2016-03-11 | 2017-12-07 | 에스에프앤티 주식회사 | Foaming solution injection device for the headrest having a backflow prevention function |
| CN109630244B (en) * | 2018-12-04 | 2020-04-03 | 宁波安创电子科技有限公司 | Nozzle convenient to change shower nozzle |
| CN111714726A (en) * | 2019-03-22 | 2020-09-29 | 美昕医疗器械(昆山)有限公司 | Medical leakage-proof joint |
| CN215333058U (en) * | 2021-04-29 | 2021-12-28 | 南京依维柯汽车有限公司 | Urea injection system |
| CN215890149U (en) * | 2021-09-29 | 2022-02-22 | 江西五十铃汽车有限公司 | Urea heating structure |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017211119A1 (en) * | 2016-06-06 | 2017-12-14 | 天纳克（苏州）排放***有限公司 | Integrated apparatus, exhaust gas post-processing system, and control method |
| CN107916973A (en) * | 2017-11-29 | 2018-04-17 | 东风商用车有限公司 | A kind of SCR urea sprays protection system |
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