CN213419213U

CN213419213U - Exhaust aftertreatment need not welded heat exchanger structure that separates

Info

Publication number: CN213419213U
Application number: CN202022222476.3U
Authority: CN
Inventors: 朱玉星; 胡忠斌; 吴华东
Original assignee: Wuxi Weifu Lida Catalytic Converter Co Ltd
Current assignee: Wuxi Weifu Lida Catalytic Converter Co Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-06-11
Anticipated expiration: 2030-09-30

Abstract

The utility model relates to a heat shield structure without welding for exhaust aftertreatment, which comprises a first barrel and a second barrel with the same structure, wherein the first barrel and the second barrel are connected through a hoop; the first barrel and the second barrel are respectively provided with a heat insulation cover assembly, the heat insulation cover assembly comprises an upper heat insulation cover and a lower heat insulation cover, the connection parts of the two circumferential sides of the upper heat insulation cover and the lower heat insulation cover are respectively provided with a U-shaped flanging, and the upper heat insulation cover and the lower heat insulation cover are connected in an occlusion manner through the U-shaped flanging; the axial both sides of going up heat exchanger and heat exchanger that separates down are equipped with the limit of sticking up, and the inboard limit of sticking up hugs closely the barrel turn-ups that corresponds to compress tightly fixedly through the staple bolt. The utility model discloses can effectually realize the purpose of solderless fixation of heat exchanger.

Description

Exhaust aftertreatment need not welded heat exchanger structure that separates

Technical Field

The utility model relates to an exhaust aftertreatment need not welded heat exchanger structure that separates belongs to diesel vehicle aftertreatment equipment technical field.

Background

With the increasing importance of the country on environmental protection, the new Europe-Liu emission standard has more strict requirements on the pollutants discharged from the tail gas of the diesel vehicle. At present, in order to meet the emission requirement, a DOC + DPF + SCR structure is adopted in the aftertreatment, the aftertreatment has certain requirements on the temperature, the surface temperature of the aftertreatment is prevented from being too high simultaneously in order to meet the temperature requirement, the conventional operation is to wrap a layer of heat insulation cover on the surface of a cylinder body, and heat insulation cotton is filled in the heat insulation cover to perform heat insulation treatment. At present, the heat shield on the surface of the cylinder body is mostly connected with the cylinder body in a welding mode, and the mode needs to be put into a manufacturing tool and has high processing cost, and the problems of various working procedures and the like exist.

Disclosure of Invention

An object of the utility model is to overcome the not enough of existence among the prior art, provide an exhaust aftertreatment and need not welded heat exchanger structure, can effectually realize the solderless fixed purpose of heat exchanger.

According to the utility model provides a technical scheme: a heat shield structure without welding for exhaust aftertreatment comprises a first barrel and a second barrel which are identical in structure, wherein the first barrel and the second barrel are connected through a hoop; the first barrel and the second barrel are respectively provided with a heat shield assembly, the heat shield assembly comprises an upper heat shield and a lower heat shield, the joints of two circumferential sides of the upper heat shield and the lower heat shield are respectively provided with a U-shaped flanging, the directions of the U-shaped flanging of the upper heat shield and the U-shaped flanging of the lower heat shield are opposite, and the upper heat shield and the lower heat shield are connected in an occlusion way through the U-shaped flanging; the axial both sides of going up heat exchanger and heat exchanger that separates down are equipped with the limit of sticking up, and the inboard limit of sticking up hugs closely the barrel turn-ups that corresponds to compress tightly fixedly through the staple bolt.

Further, the angle of the raised edge is 120 degrees, and the height is 1.0-2.0 mm.

Further, the section of the blank holder of the hoop is in an arch bridge shape.

Further, carriers are arranged in the first cylinder and the second cylinder respectively, and shock pads are arranged between the carriers and the first cylinder and between the carriers and the second cylinder.

Further, set up thermal-insulated cotton between thermal-insulated cover subassembly and first barrel, thermal-insulated cover subassembly and the second barrel.

Compared with the prior art, the utility model, have following advantage:

1. the utility model discloses a solve current barrel and separate heat exchanger and pass through the welding and be connected with the barrel, need throw system frock and processing cost height, the numerous scheduling problem of process, the utility model discloses a separate heat exchanger structure of U type turn-ups interlock mechanism, separate the heat exchanger both sides and adopt the 120 turn-ups respectively, the cooperation hypotenuse is fixed for the turn-ups barrel staple bolt of 120, and the staple bolt reaches the purpose of fixed heat exchanger that separates in the connecting cylinder body. The purpose of solderless fixation of the heat shield is effectively realized.

2. The welding is not needed, the disassembly is convenient, and the cost is reduced.

3. Simple structure, convenient to use effectively realizes need not welded fastening and separates the heat exchanger, has avoided the frock input that the robot welding brought and the welding defect that separates the heat exchanger welding and bring.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partially enlarged view of fig. 1.

FIG. 3 is a side view of the upper heat shield.

Fig. 4 is a partially enlarged view of fig. 3.

Fig. 5 is a schematic structural view of the upper heat shield.

Fig. 6 is a schematic structural view of a heat shield raised edge and a barrel flange.

FIG. 7 is an enlarged partial view of a fin of the heat shield.

Fig. 8 is a schematic view showing the U-shaped flanges of the upper heat shield and the lower heat shield in a meshed state.

Description of reference numerals: 1-a first cylinder, 2-a second cylinder, 3-a heat shield component, 4-a sealing gasket, 5-a gasket supporting cylinder, 6-U-shaped flanging, 7-a raised edge, 8-a cylinder flanging, 9-a carrier, 10-a shock pad, 11-heat insulation cotton and 12-a hoop.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1 and 2, a heat shield structure without welding for exhaust gas aftertreatment comprises a first cylinder 1 and a second cylinder 2 which have the same structure, wherein the first cylinder 1 and the second cylinder 2 are connected through a hoop 12, cylinder flanges 8 are arranged on two sides of the first cylinder 1, a sealing gasket 4 is clamped between the cylinder flanges 8 on the inner sides of the first cylinder 1 and the second cylinder 2, the sealing gasket 4 is supported by a gasket supporting cylinder 5, and the gasket supporting cylinder 5 is fixedly connected with the first cylinder 1 or the second cylinder 2; the first barrel body 1 and the second barrel body 2 are respectively provided with a heat insulation cover assembly 3, the heat insulation cover assembly 3 comprises an upper heat insulation cover and a lower heat insulation cover, the connection parts of the two circumferential sides of the upper heat insulation cover and the lower heat insulation cover are respectively provided with a U-shaped flanging 6, as shown in figure 8, the directions of the U-shaped flanging 6 of the upper heat insulation cover and the lower heat insulation cover are opposite, and the upper heat insulation cover and the lower heat insulation cover are connected in an occlusion way through the U-shaped flanging 6; as shown in fig. 5, raised edges 7 are arranged at two axial sides of the upper heat shield and the lower heat shield, and as shown in fig. 6, the raised edges 7 at the inner side are tightly attached to the corresponding barrel flanges 8 and are pressed and fixed by the hoops 12.

As shown in FIG. 7, the angle of the raised edge is 120 degrees, and the height is 1.0-2.0 mm.

The section of the blank holder of the hoop 12 is in an arch bridge shape.

As shown in fig. 1, a carrier 9 is disposed in each of the first cylinder 1 and the second cylinder 2, and a damper pad 10 is disposed between the carrier 9 and the cylinders.

And heat insulation cotton 11 is arranged between the heat shield component 3 and the barrel.

The installation process comprises the following steps: firstly, the upper heat shield and the lower heat shield are sleeved on the first cylinder 1, the inner U-shaped flanging and the outer U-shaped flanging of the two heat shields are oppositely inserted and fastened, and as shown in figures 3 and 4, the second cylinder 2 is also operated in the same way to form the cylindrical heat shield. The raised edges 7 on both axial sides of the heat shield assembly 3 are next to the barrel flange 8. And then, installing and tightening the anchor ear 12, wherein in the tightening process of the anchor ear 12, the anchor ear 12 shrinks the V-shaped edge pressing to press the warped edges 7 at two axial sides of the heat shield. When the anchor ear 12 is completely tightened, the heat shield assemblies 3 on both sides are also pressed and fixed, and the raised edges 7 on both sides of the heat shield in the axial direction can also avoid the axial movement of the heat shield. By means of this construction, a weld-free fastening of the heat shield is finally achieved. The utility model discloses simple structure, convenient to use effectively realizes the solderless fixation who separates the heat exchanger, and it is fixed to need not complicated frock installation, reduces simultaneously and separates heat exchanger welding process, the cost is reduced.

It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims

1. A heat shield structure without welding for exhaust aftertreatment comprises a first barrel (1) and a second barrel (2) which are identical in structure, wherein the first barrel (1) and the second barrel (2) are connected through a hoop (12), and barrel flanges (8) are arranged on two sides of the first barrel (1), and the heat shield structure is characterized in that a sealing gasket (4) is clamped between the barrel flanges (8) on the inner sides of the first barrel (1) and the second barrel (2), the sealing gasket (4) is supported by a gasket supporting barrel (5), and the gasket supporting barrel (5) is fixedly connected with the first barrel (1) or the second barrel (2); the first barrel (1) and the second barrel (2) are respectively provided with a heat shield assembly (3), the heat shield assembly (3) comprises an upper heat shield and a lower heat shield, the joints of two circumferential sides of the upper heat shield and the lower heat shield are respectively provided with a U-shaped flanging (6), the directions of the U-shaped flanging (6) of the upper heat shield and the lower heat shield are opposite, and the upper heat shield and the lower heat shield are connected in an occlusion way through the U-shaped flanging (6); go up to separate heat exchanger and separate the axial both sides of heat exchanger down and be equipped with and stick up limit (7), inboard stick up limit (7) and hug closely corresponding barrel turn-ups (8) to compress tightly fixedly through staple bolt (12).

2. The exhaust aftertreatment weld-free heat shield structure of claim 1, wherein the raised edge has an angle of 120 ° and a height of 1.0-2.0 mm.

3. The exhaust aftertreatment weld-free heat shield structure of claim 1, wherein the binder of the hoop (12) is arch-bridge shaped in cross-section.

4. The exhaust gas aftertreatment weld-free heat shield structure according to claim 1, wherein carriers (9) are respectively disposed in the first cylinder (1) and the second cylinder (2), and shock-absorbing pads (10) are disposed between the carriers (9) and the first cylinder (1), the carriers (9) and the second cylinder (2).

5. The exhaust gas aftertreatment weld-free heat shield structure according to claim 1, wherein heat insulation cotton (11) is arranged between the heat shield assembly (3) and the first cylinder (1), and between the heat shield assembly (3) and the second cylinder (2).