CN114635771A

CN114635771A - Urea sprays pipe connection seat, urea and sprays pipeline structure and vehicle

Info

Publication number: CN114635771A
Application number: CN202210174189.0A
Authority: CN
Inventors: 高天斌; 朱格格; 郭亮; 王奉明; 房启岭; 李琳; 于依洋; 李晓晖; 牛犇
Original assignee: Beiqi Foton Motor Co Ltd
Current assignee: Beiqi Foton Motor Co Ltd
Priority date: 2022-02-24
Filing date: 2022-02-24
Publication date: 2022-06-17
Anticipated expiration: 2042-02-24
Also published as: CN114635771B

Abstract

The utility model 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 the insertion of a urea nozzle joint is formed in the joint seat body; the leakage-proof plug is arranged in the channel and comprises an elastic sealing part capable of opening and closing the channel, and when the urea nozzle joint is inserted into the channel, the elastic sealing part can be opened to enable the urea liquid in the channel to flow to the urea nozzle joint; when the urea nozzle joint is pulled out of the channel, the elastic sealing part closes the channel to seal urea liquid in the channel. According to the technical scheme, in the process that the urea nozzle joint is inserted 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, urea liquid in the urea injection pipe joint seat is prevented from being sprayed outwards, cost is saved, and the environment is protected.

Description

Urea sprays pipe connection seat, urea and sprays pipeline structure and vehicle

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 installed on automobile engine's exhaust purification catalyst converter, and in the driving process, violent shake is along with urea nozzle and injection pipeline interface drag phenomenon, easily takes place urea injection pipe and urea nozzle and breaks away from, leads to urea to spray the outflow, when causing economic loss, also causes certain environmental pollution, and has the empty vehicle of urea stream and discharges the risk that exceeds standard.

Disclosure of Invention

An object of the present disclosure is to provide a urea injection pipe coupling seat capable of solving a problem of outflow of urea spray caused by separation of a urea nozzle from a urea injection pipe coupling end.

Another object of the present disclosure is to provide a urea injection pipe structure to which the urea injection pipe joint seat is applied and a vehicle to which the urea injection pipe structure is applied.

In order to achieve the above object, a first aspect of the present disclosure provides a urea injection pipe joint seat comprising:

the urea nozzle connector comprises a connector seat body, wherein a channel for inserting the urea nozzle connector is formed in the connector seat body;

the leakage-proof plug is arranged in the channel and comprises an elastic sealing part which can open and close the channel, and when the urea nozzle joint is inserted into the channel, the elastic sealing part can be opened to enable the urea liquid in the channel to 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 as to seal urea liquid in the channel.

Optionally, the resilient sealing portion 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 circumferential direction 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 supporting pieces are arranged between the first opening and the second opening in the circumferential direction of the elastic conical ring and are mutually abutted, and one ends of the supporting pieces facing the second opening are mutually attached to seal the second opening.

Optionally, the number of the supporting members is three, and the three supporting members enclose a conical structure matched with the inner side wall of the elastic conical ring.

Optionally, the resilient sealing portion is configured as a plurality of sealing flaps connected in a circumferential direction of the passage and extending towards a central direction of the passage, the plurality of sealing flaps being recessed towards an inner direction of the passage and opening in the circumferential direction when the urea nozzle fitting is inserted into the passage; the plurality of sealing flaps rebound to seal the passage when the urea nozzle fitting is pulled out of the passage.

Optionally, the leakproof plug further comprises a barrel body, the elastic sealing part is connected to the periphery of the inner side wall of the barrel body, and the outer side wall of the barrel body is connected with the inner wall of the channel.

Optionally, the barrel portion is integrally formed with the resilient seal portion.

Optionally, the leakage-proof plug further comprises a heating assembly, and 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 fitting is inserted into the passage, a side wall of the elastic sealing portion facing the inside of the passage abuts against an inner side wall of the heating ring.

In a second aspect of the present disclosure, a urea injection pipeline structure is provided, which includes a urea nozzle joint and the urea injection pipe joint seat.

In a third aspect of the present disclosure, a vehicle is provided that includes the above-described urea injection line structure.

According to the technical scheme, the leakage-proof plug is arranged in the channel in the joint base body, when the urea nozzle joint needs to be connected with the urea injection pipe joint base, the urea nozzle joint is inserted into the channel, in the inserting process, the elastic sealing part is opened, the channel is communicated with the urea nozzle joint, and urea liquid in the joint base body can flow to the urea nozzle joint; when the urea nozzle joint is pulled out by the passageway, the elastic sealing part can close the passageway to seal the inside urea liquid, avoid urea liquid in the urea injection pipe coupling seat to spray outflow, save the cost, the environmental protection.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a block diagram view of a urea injection fitting seat provided by some embodiments of the present disclosure;

FIG. 2 is a sectional view of the urea injection coupling seat based on FIG. 1;

FIG. 3 is a cross-sectional view of a leak-proof plug of a urea injection pipe fitting provided by some embodiments of the present disclosure;

FIG. 4 is a schematic illustration of the connection of the elastomeric conical ring of the urea injection fitting seat to the cartridge body provided by some embodiments of the present disclosure;

FIG. 5 is an exploded schematic view of a leak proof plug of a urea injection fitting provided by some embodiments of the present disclosure;

FIG. 6 is a schematic illustration of a urea nozzle fitting insertion leak-proof plug of a urea injection fitting seat provided by some embodiments of the present disclosure;

FIG. 7 is a cross-sectional view based on the insertion of the urea nozzle fitting of FIG. 6 into a leak proof plug;

FIG. 8 is a top view of a leak proof plug of a urea injection fitting seat provided by some embodiments of the present disclosure;

fig. 9 is a cross-sectional view of the leakproof plug based on fig. 8.

Description of the reference numerals

10-a socket body; 11-a channel; 20-leak proof plug; 30-urea nozzle joint;

210-a barrel portion; 220-elastic conical ring; 221-a first opening; 222-a second opening; 230-a support; 240-sealing flap; 250-heating ring.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise specified, the use of directional terms such as "upper, lower, left, right" generally refers to the directions defined by the figures of the corresponding drawings as referenced; "inner and outer" refer to the inner and outer of the respective component profiles; "distal" and "proximal" refer to the respective structures or respective elements being distal or proximal to one another; in addition, it is to be noted that terms such as "first, second, and the like are used for distinguishing one element from another.

As shown in fig. 1 to 9, in a first aspect of the present disclosure, there is provided a urea injection pipe joint seat including: the urea nozzle connector comprises a connector seat body 10, wherein a channel 11 for inserting the urea nozzle connector 30 is formed in the connector seat body 10; a leakage preventing plug 20 provided in the passage 11 and including an elastic sealing portion capable of opening and closing the passage 11, the elastic sealing portion being capable of opening to allow the urea solution 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 fitting 30 is pulled out of the passage 11, the elastic sealing portion closes the passage 11 to seal the urea solution in the passage 11.

Through the technical scheme, the leakage-proof plug 20 is arranged in the channel 11 in the joint seat body 10, when the urea nozzle joint 30 needs to be connected with the urea injection pipe joint seat, the urea nozzle joint 30 is inserted into the channel 11, in the inserting process, the elastic sealing part is opened, the channel 11 is communicated with the urea nozzle joint 30, and urea liquid in the joint seat body 10 can flow to the urea nozzle joint 30; when the urea nozzle joint 30 is pulled out from the channel 11, the elastic sealing part can close the channel 11, so that the urea liquid in the urea nozzle joint seat is sealed, the urea liquid in the urea nozzle joint seat is prevented from being sprayed outwards, the cost is saved, and the environment is protected.

The elastic sealing part may be configured in any manner, as shown in fig. 3, 4 and 5, and in some embodiments of the present disclosure, the elastic sealing part is configured as an elastic tapered ring 220 and a plurality of supporters 230; wherein, the elastic tapered 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 circumferential direction of the first opening 221 is connected with the circumferential side wall of the channel 11, specifically, may be fixedly connected with the circumferential side wall of the channel 11, or may be connected with the circumferential side wall of the channel 11 through a corresponding sealing structure, so that the circumferential direction of the elastic sealing portion is connected with the circumferential side wall of the channel 11 without a gap, and the urea liquid in the channel 11 cannot pass through the connection between the two, 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 in the channel 11, when the urea nozzle joint 30 is inserted into the channel 11, the urea liquid firstly passes through the first opening 221 of the elastic sealing portion, and then enters the channel 11 through the second opening 222 expanded after elastic deformation and is communicated with the channel 11.

The 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 supporting members 230 may be disposed in the circumferential direction of the elastic conical ring 220 by bonding or other fixed connection, along the second direction of the first opening 221, the supporting members 230 are tightly attached to each other and abut against each other, so as to support the side of the elastic conical ring 220 away from the passage 11, and one ends of the supporting members 230 facing the second opening 222 are attached to each other, so as to seal the second opening 222, so that the urea liquid in the passage 11 cannot flow out through the second opening 222. The urea nozzle joint 30 is inserted from the first opening 221 of the elastic cone ring 220 and then abuts against the plurality of supporters 230, the plurality of supporters 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 as the urea nozzle joint 30 moves, the second opening 222 is gradually enlarged, and the urea nozzle joint 30 is inserted from the second opening 222 into the inside of the passage 11; when the urea nozzle joint 30 is pulled out or pulled out from the inside of the passage 11, the second opening 222 is elastically restored to the initial state, and the plurality of supporting members 230 are contracted along with the elastic tapered ring 220 and are circumferentially abutted against each other, and at the same time, the supporting members 230 are abutted against each other at the second opening 222 and seal the second opening 222, so that the urea bottom is prevented from flowing out. When the urea nozzle joint 30 is pulled out or accidentally comes off, the elastic conical ring 220 may be turned outwards along with the urea nozzle joint 30, the passage 11 cannot be sealed, meanwhile, the pressure inside the passage 11 continues to exist, only the elastic conical ring 220 may not be sealed, and the plurality of supporting pieces 230 are abutted against each other in the circumferential direction, so that the elastic conical ring 220 is prevented from turning outwards, and urea solution leakage caused by overlarge pressure in the passage 11 is also prevented.

Can guarantee elastic cone ring 220 and urea nozzle joint 30 closely combine when urea nozzle joint 30 inserts, because support piece 230 is to elastic cone ring 220's supporting role, the less structure of thickness can be made into to elastic cone ring 220, has greatly reduced the gap between urea nozzle joint 30 and the passageway 11 pipe wall, when playing important sealed effect, still ensures that suck-back in-process is more thorough, can effectively reduce the crystallization problem of remaining urea formation. When the urea nozzle is detached or separated, the elastic cone ring 220 rapidly rebounds to close and prevents the urea solution with a large pressure from continuously flowing out from the passage 11 under the support of the supporting member 230. At this time, the urea pump controller automatically stops pressurizing when detecting the increase of the injection pressure, reports corresponding faults 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 thermal conductivity.

In some embodiments of the present disclosure, the number of the supporting members 230 is three, the three supporting members 230 have the same size and are uniformly distributed on the inner side wall of the elastic tapered ring 220, and the three supporting members 230 enclose a conical structure matched with the inner side wall of the elastic tapered ring 220. When the urea nozzle adapter 30 is inserted, the portion of the three supporting members 230 supporting the elastic tapered ring 220 is opened in three directions, which mainly plays a role of supporting and lubricating, and when the urea nozzle adapter 30 is pulled out or dropped, the three supporting members 230 are rapidly closed under the elastic force of the elastic tapered ring 220, thereby preventing the spray of the urea solution inside the urea injection pipe adapter seat from flowing outwards.

In other embodiments of the present disclosure, as shown in fig. 8 and 9, the elastic sealing portion is configured as a plurality of sealing flaps 240, the plurality of sealing flaps 240 are connected to the circumferential direction of the passage 11 and extend toward the central 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 inner direction of the passage 11 and open in the circumferential direction; as the urea nozzle fitting 30 is pulled out of the passageway 11, the plurality of sealing flaps 240 rebound to seal the passageway 11. Specifically, the sealing petals 240 can be three, four, five, six, eight, or more. For example, in the present disclosure, eight flaps are taken as an example, the sealing flap 240 has 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 side is connected to the circumferential direction of the channel 11, two side edges of each sealing flap 240 respectively abut against the side edges of the adjacent sealing flap 240 to seal the channel 11, when the urea nozzle joint 30 is inserted into the channel 11, the sealing flaps 240 are elastically depressed toward the inner direction of the channel 11 and open in the circumferential direction, when the urea nozzle joint 30 is inserted into the channel 11, the sealing flaps 240 can also seal the circumferential direction of the urea nozzle joint 30, and when the urea nozzle joint 30 is pulled out or dropped, the sealing flaps 240 rebound to seal the channel 11, thereby preventing the urea solution from flowing out.

As shown in fig. 3, 4 and 5, in some embodiments of the present disclosure, the leakage preventing plug 20 may further include a barrel 210, the elastic sealing portion is connected to the circumference of the inner sidewall of the barrel 210, and the outer sidewall of the barrel 210 is connected to the inner wall of the channel 11. Wherein, barrel 210 includes first end and second end, when the elastic sealing portion is constructed as elastic conical ring 220 and a plurality of support pieces 230, the outer side wall of first opening 221 department of elastic conical ring 220 is connected with the inner side wall of the first end of barrel 210, second opening 222 of elastic conical ring 220 extends towards the second end direction of barrel 210, the outer side wall of barrel 210 is connected with the inner wall of passageway 11 of joint seat body 10, specifically, fixed connection can be adopted, also detachable connection can be adopted, it is worth noting that the connection relation can guarantee that urea liquid can not pass through, and sealing effect can be achieved. 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 barrel portion 210, and the outer side wall of the barrel portion 210 is connected to the inner wall of the passage 11 of the socket body 10.

In some embodiments, the barrel 210 is integrally formed with the elastic sealing portion, and may be made of elastic material such as elastic rubber, polyurethane, etc. The materials used for the cylindrical body 210 and the elastic sealing portion should have high durability, urea corrosion resistance, and 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 is easy to freeze in a low-temperature area and cannot be thawed for a long time, and the urea liquid cannot be liquefied and injected into the catalytic converter for catalytic reduction of nitrogen oxides, so that the emission exceeds the standard. In the related technology, the urea injection pipeline joint seat and the urea nozzle joint 30 are fixed by using a quick-connect joint, a heating resistance wire is wrapped in a peripheral pipeline of the joint, when the low-temperature environment needs to be heated, the heating resistance wire is heated to achieve the unfreezing effect, the heating power at the joint of the urea pipe in the low-temperature area is insufficient, the heat conductivity of the urea pipe wall is limited, the urea pipe cannot be unfrozen quickly, and the problems of fault reporting, torque limitation and excessive emission are caused.

To solve the above problems in the related art, in some embodiments of the present disclosure, the leakproof plug 20 further includes a heating assembly disposed in the channel 11 and located in the circumferential direction of the elastic sealing portion.

The heating assembly may be configured in any manner, and in some embodiments disclosed, and as shown in FIG. 3, the heating assembly is configured as a heating ring 250, with the side wall of the resilient seal facing the interior of the passageway 11 conforming to the inside wall of the heating ring 250 when the urea nozzle fitting 30 is inserted into the passageway 11. The heating ring 250 is located between the barrel 210 and the elastic taper ring 220, and when the urea nozzle joint 30 is inserted, after the elastic taper ring 220 is forced to expand in the circumferential direction, the circumferential side wall of the elastic taper ring 220 facing the inside of the barrel 210 is attached to the heating ring 250, and when the urea solution needs to be thawed in a cold area, the heating ring 250 is started, so that frost and crystals at the joint can be thawed quickly. It should be noted that the heating ring 250 may adopt a resistance wire heating manner or an induction heating manner, and may be heated and thawed by the urea solution, which is not limited in the present disclosure.

In conclusion, the urea injection pipe joint seat provided by the embodiment of the disclosure has the advantages that under the condition that the original quick-plugging structure connection condition is not affected, the sealing performance of the joint is remarkably improved, the leakage of urea liquid can be effectively prevented when the urea nozzle joint 30 is leaked, the ice melting and thawing can be realized quickly in a short time under the low-temperature condition, the urea injection pipeline can respond timely, and the nitrogen oxide pollutants can be effectively reduced.

In a second aspect of the present disclosure, a urea injection pipeline structure is provided, which includes the urea nozzle joint 30 and the urea injection pipe joint seat. 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 anti-leakage plug 20 inside the urea nozzle joint can seal the channel 11 of the joint seat body 10 of the urea injection pipe joint seat, so that the urea liquid is prevented from being sprayed outwards.

In a third aspect of the present disclosure, a vehicle is provided, which includes the above-mentioned urea injection pipeline structure, and therefore, the vehicle also has the advantages of the above-mentioned urea injection pipeline structure, and details thereof are omitted here.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. A urea injection pipe fitting seat, comprising:

the urea nozzle connector comprises a connector base body (10), wherein a channel (11) for inserting the urea nozzle connector (30) is formed in the connector base body (10);

a leak-proof plug (20) provided in the passage (11) and including an elastic sealing portion capable of opening and closing the passage (11), the elastic sealing portion being capable of opening to allow the urea solution in the passage (11) to flow to the urea nozzle fitting (30) when the urea nozzle fitting (30) is inserted into the passage (11); when the urea nozzle joint (30) is pulled out of the channel (11), the elastic sealing part closes the channel (11) so as to seal urea liquid in the channel (11).

2. The urea injection fitting of claim 1, wherein the resilient sealing portion 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 that of the second opening (222); the circumference of the first opening (221) is connected with the circumferential side wall of the channel (11), and the second opening (222) extends towards the inner direction of the channel (11);

the supporting pieces (230) are arranged on the periphery of the elastic conical ring (220) between the first opening (221) and the second opening (222) and are abutted with each other, and one ends of the supporting pieces facing the second opening (222) are attached to each other to seal the second opening (222).

3. The urea injection coupling seat according to claim 2, wherein the number of the supporting members (230) is three, and the three supporting members (230) define a conical structure adapted to an inner side wall of the elastic conical ring (220).

4. A urea injection pipe joint according to claim 1, characterized in that said resilient sealing portion is configured as a plurality of sealing flaps (240), said plurality of sealing flaps (240) being connected to the circumferential direction of said channel (11) and extending towards the central direction of said channel (11), said plurality of sealing flaps (240) being recessed towards the inner direction of said channel (11) and opening in the circumferential direction when said urea nozzle joint (30) is inserted into said channel (11); the plurality of sealing flaps (240) spring back to seal the passage (11) when the urea nozzle fitting (30) is pulled out of the passage (11).

5. The urea injection pipe joint seat according to claim 1, wherein the leakage preventing plug (20) further comprises a barrel portion (210), the elastic sealing portion is connected to the circumference of the inner side wall of the barrel portion (210), and the outer side wall of the barrel portion (210) is connected with the inner wall of the channel (11).

6. The urea injection coupling boss of claim 5, wherein the barrel portion (210) is integrally formed with the resilient seal portion.

7. Urea injection pipe joint according to any one of claims 1-6, characterized in that the leakage-proof plug (20) further comprises a heating assembly provided in the channel (11) and located circumferentially to the resilient sealing portion.

8. The urea injection coupling seat according to claim 7, wherein the heating assembly is configured as a heating ring (250), and a side wall of the elastic sealing portion facing the inside of the passage (11) is fitted to an inner side wall of the heating ring (250) when the urea injection coupling (30) is inserted into the passage (11).

9. A urea injection line structure, characterized by comprising a urea injection nozzle fitting (30) and a urea injection pipe fitting seat according to any one of claims 1-8.

10. A vehicle characterized by comprising the urea injection line structure of claim 9.