CN215890149U

CN215890149U - Urea heating structure

Info

Publication number: CN215890149U
Application number: CN202122386459.8U
Authority: CN
Inventors: 刘宇; 赵挺; 廖程亮; 代世青; 张海冲; 李江兵; 刘帆
Original assignee: Jiangxi Isuzu Motors Co Ltd
Current assignee: Jiangxi Isuzu Motors Co Ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-02-22
Anticipated expiration: 2031-09-29

Abstract

The utility model is a urea heating structure, comprising: a urea pipe through which urea flows; at least 1 resistance wire arranged outside the urea tube; wherein, the resistance wire and the urea tube are also provided with heat preservation layers outside; the resistance wire and the urea pipe are wrapped inside the heat-insulating layer by the heat-insulating layer; the outside of heat preservation still is equipped with the protection tube. The resistance wire is arranged outside the urea pipe, so that the heating wire at the bending part of the urea pipe can be prevented from being in long-time contact with the urea pipe when the resistance wire is arranged inside the urea pipe, local overheating is easy to cause, and the pipeline is damaged. The heat preservation can avoid the heat dissipation to promote heating efficiency. The protection tube can protect whole urea pipe externally, avoids heat preservation and resistance wire to receive the damage.

Description

Urea heating structure

Technical Field

The utility model relates to the technical field of automobiles, in particular to a urea heating structure.

Background

With the implementation of the national six regulations of commercial vehicles, urea systems are added on light and heavy truck catalytic converters, and urea pipelines for carrying urea conveying functions are particularly important, particularly in cold regions, a urea solution can freeze at a subzero temperature, a urea heating device needs to be added on a diesel vehicle to thaw urea as soon as possible, otherwise, the urea system fails in function, emission exceeds the standard, and the use of the vehicle is affected. The urea heating mode industry has hydrothermal, the electric heating mode in, and the domestic wide application at present is the electric heating mode, and prior art adopts an internal heating mode at present, and heating module is direct to contact with urea solution in the urea pipe, and internal heating wire is because inside the urea pipe, and the urea pipe is bent the department heater strip and can be with urea pipe long time contact, easily causes local overheat, damages the pipeline.

SUMMERY OF THE UTILITY MODEL

The present invention proposes a urea heating structure to solve the above mentioned technical problems.

The technical purpose of the utility model is realized by the following technical scheme:

a urea heating structure comprising:

a urea pipe through which urea flows;

at least 1 resistance wire arranged outside the urea tube;

wherein, the resistance wire and the urea tube are also provided with heat-insulating layers outside;

the resistance wire and the urea pipe are wrapped inside the heat-insulating layer by the heat-insulating layer;

and a protective tube is sleeved outside the heat-insulating layer.

Further, the number of the resistance wires is 2.

Further, the resistance wire is spirally wound on the urea pipe through a winding machine.

Further, the heat-insulating layer is tin foil.

Further, the protection pipe is a corrugated pipe.

Further, 2 resistance wires equidirectionally set up.

The utility model has the beneficial effects that:

according to the utility model, the resistance wire is arranged outside the urea tube, the urea tube and the urea inside the urea tube can be heated after current is introduced, the resistance wire is arranged outside the urea tube and can be prevented from contacting with the urea inside the urea tube, the resistance wire and the urea tube are wrapped inside the heat insulation layer through the heat insulation layer, heat dissipation can be avoided, and the heating efficiency is improved. The outermost protection tube can externally protect the whole urea tube, and the heat preservation layer and the resistance wire are prevented from being damaged.

Drawings

FIG. 1 is a schematic diagram of a urea heating configuration.

1. A urea pipe; 2. a resistance wire; 3. a heat-insulating layer; 4. and (5) protecting the tube.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in fig. 1, a urea heating structure includes:

a urea pipe 1 through which urea flows;

at least 1 resistance wire 2 is arranged outside the urea tube 1;

wherein, the resistance wire 2 and the urea tube 1 are also provided with a heat preservation layer 3 outside;

the resistance wire 2 and the urea tube 1 are wrapped inside the heat preservation layer 3 by the heat preservation layer 3;

the outside of heat preservation 3 still is equipped with protection tube 4.

Particularly, through the outside at the urea pipe set up the resistance wire, can heat urea pipe and inside urea after letting in the electric current, the resistance wire setting can avoid externally with the inside urea contact of urea pipe, wrap up resistance wire and urea pipe inside the heat preservation through the heat preservation, can avoid the heat dissipation to promote heating efficiency. The outermost protection tube can externally protect the whole urea tube, and the heat preservation layer and the resistance wire are prevented from being damaged.

Optionally, 2 resistance wires 2 are provided. Two heating effects can be guaranteed.

Optionally, the resistance wire 2 is spirally wound on the urea pipe 1 by a winding machine. Be the heliciform through the coiler and twine on urea pipe 1, can let resistance wire 2 evenly distributed on urea pipe 1, the heating effect is more even to can remain stable connection with urea pipe 1.

Optionally, the insulating layer 3 is tin foil. Tinfoil has stronger flexibility, can prevent the extrusion, conveniently wraps up resistance wire 2 and urea pipe 1, and leakproofness and heat preservation attribute are stronger.

Optionally, the protection tube 4 is a corrugated tube. The bellows has a high strength and can be bent together with the shape of the urea pipe 1.

Optionally, the 2 resistance wires 2 are arranged in the same direction. The 2 resistance wires 2 are in the same direction, so that the 2 resistance wires 2 are prevented from being crossed and interfered with each other. And is beneficial to the uniformity of the whole shape and is convenient for the wrapping of the heat-insulating layer 3.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the utility model and are not to be construed as limiting the utility model. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. A urea heating structure, comprising:

a urea pipe (1) through which urea flows;

at least 1 resistance wire (2) arranged outside the urea tube (1);

wherein, the resistance wire (2) and the urea tube (1) are also provided with a heat-insulating layer (3) outside;

the resistance wire (2) and the urea pipe (1) are wrapped inside the heat-insulating layer (3) by the heat-insulating layer (3);

and a protective tube (4) is sleeved outside the heat-insulating layer (3).

2. A urea heating structure as claimed in claim 1, characterized in that:

the number of the resistance wires (2) is 2.

3. A urea heating structure as claimed in claim 1, characterized in that:

the resistance wire (2) is spirally wound on the urea pipe (1) through a winding machine.

4. A urea heating structure as claimed in claim 1, characterized in that:

the heat-insulating layer (3) is tin foil.

5. A urea heating structure as claimed in claim 1, characterized in that:

the protection pipe (4) is a corrugated pipe.

6. A urea heating structure as claimed in claim 2, characterized in that:

the 2 resistance wires (2) are arranged in the same direction.