Three-way catalyst with gasket protection structure

Abstract

The utility model relates to the technical field of three-way catalytic converters, in particular to a three-way catalytic converter with a liner protection structure, which comprises a shell and a catalytic converter carrier arranged in the shell, and an air inlet conical end and an air outlet conical end which are communicated with the catalytic converter carrier are respectively formed at two ends of the shell. A heat insulation cushion layer is fixedly connected to the inner wall of the shell and comprises a gasket fixedly connected to the inner wall of the shell and a plurality of heat insulation ring plates obliquely arranged on the inner wall of the shell at equal intervals. A plurality of annular grooves for placing the heat insulation annular plates are formed in the side, making contact with the inner wall of the shell, of the liner, and the problem that in the long-term using process of a traditional liner and a heat insulation layer, the bonding position is prone to aging and separation is caused is solved.

Description

Technical Field

[0001] The present application relates to the technical field of three-way catalytic converters, and specifically discloses a three-way catalytic converter with a liner protection structure. Background Art

[0002] The three-way catalytic converter is the most important external purification device installed in the automobile exhaust system. It can remove CO, HC and NO from the exhaust gas of the automobile. x Harmful gases such as chlorine and chlorine are converted into harmless carbon dioxide, water and nitrogen through oxidation and reduction.

[0003] In the prior art, a three-way catalytic converter usually includes a shell formed by two groups of assembling chamber bodies and a catalyst carrier installed in the shell, and the two ends of the shell are respectively formed with an air intake conical end and an air outlet conical end, and an air intake pipe and an air outlet pipe are respectively connected through the air intake conical end and the air outlet conical end.

[0004] A liner is also installed on the inner wall of the silo, and an insulation layer is installed between the liner and the inner wall of the silo. Usually, the insulation layer and the liner are installed by bonding, and the liner and the insulation layer are divided into two layers, which are relatively independent. During long-term use, due to the continuous supply of hot air flow, the liner and the insulation layer, as well as the bonding parts are prone to aging, and the liner and the insulation layer are prone to separation.

[0005] Therefore, in view of this, the inventor provides a three-way catalytic converter with a gasket protection structure to solve the above-mentioned problems. Utility Model Content

[0006] The utility model aims to solve the problem that the bonding parts of the traditional liner and the heat insulation layer are prone to aging and separation during long-term use.

[0007] In order to achieve the above-mentioned purpose, the basic scheme of the utility model provides a three-way catalytic converter with a gasket protection structure, including a shell and a catalyst carrier arranged in the shell, and the two ends of the shell are respectively formed with an intake conical end and an exhaust conical end connected to the catalyst carrier, and the intake conical end and the exhaust conical end are respectively connected to the intake pipe and the exhaust pipe, and the inner wall of the shell is fixedly connected to a thermal insulation pad layer, and the thermal insulation pad layer includes a gasket fixedly connected to the inner wall of the shell and a plurality of thermal insulation ring plates equidistantly arranged on the inner wall of the shell, and a plurality of annular grooves are opened on the side of the gasket that contacts the inner wall of the shell for the thermal insulation ring plates to be placed.

[0008] Furthermore, along the inclination direction of the heat-insulating ring plates, one end portion of an upper heat-insulating ring plate of adjacent heat-insulating ring plates that is fixed to the inner wall of the shell is located inside the free end portion of the lower heat-insulating ring plate.

[0009] Furthermore, the adjacent annular grooves are not connected.

[0010] Furthermore, a heat insulation layer is fixedly connected between the inner wall of the shell and the liner, and the heat insulation ring plates are all fixedly connected to the inner side of the heat insulation layer.

[0011] Furthermore, an intake guide vane extending to the catalyst carrier is provided in the intake conical end.

[0012] Furthermore, the distance between the catalyst carrier and the air inlet pipe is greater than the distance between the catalyst carrier and the air outlet pipe.

[0013] Furthermore, the shell includes an upper storage body and a lower storage body that are detachably connected to each other.

[0014] The principle and effect of this scheme are:

[0015] Compared with the prior art, the utility model installs a thermal insulation pad layer in the shell, directly fixes the liner in the thermal insulation pad layer in the shell, and installs a number of inclined thermal insulation ring plates by opening annular grooves on the liner, thereby achieving thermal insulation and heat preservation effects, and can also ensure stable circulation of airflow with the liner. At the same time, the thermal insulation ring plate installed in the liner will not separate from the liner, which can extend the service life and solve the problem of aging and separation of the bonding joint between the traditional liner and the thermal insulation layer during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of a three-way catalytic converter with a gasket protection structure proposed in Example 1 of the present application is shown;

[0018] Figure 2 A cross-sectional view of a three-way catalytic converter with a gasket protection structure proposed in the first embodiment of the present application is shown;

[0019] Figure 3 A partial schematic diagram of a three-way catalytic converter with a gasket protection structure proposed in Example 1 of the present application is shown;

[0020] Figure 4 A partial schematic diagram of a three-way catalytic converter with a gasket protection structure proposed in Example 2 of the present application is shown. DETAILED DESCRIPTION

[0021] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0022] The reference numerals in the drawings of the specification include: housing 1 , intake pipe 2 , catalyst carrier 3 , intake guide plate 4 , gasket 5 , and heat insulation ring plate 6 .

[0023] A three-way catalytic converter with a liner protection structure, embodiment 1 Figure 1 As shown:

[0024] The invention comprises a shell 1 , a catalyst carrier 3 installed in the shell 1 and a heat insulation pad fixed on the inner wall of the shell 1 .

[0025] The shell 1 is formed by an upper body and a lower body connected by bolts, and an intake conical end and an exhaust conical end connected to the catalyst carrier 3 are formed at the left and right ends of the shell 1 respectively, and the intake conical end and the exhaust conical end are respectively connected to the intake pipe 2 and the exhaust pipe, and the upper flanges are installed accordingly.

[0026] The thermal insulation cushion layer includes a liner 5 and a plurality of thermal insulation ring plates 6 fixedly installed by bonding. The liner 5 is in contact with the inner wall of the shell 1 on one side, that is, the outer side of the liner 5 is provided with a plurality of ring grooves for inserting the thermal insulation ring plates 6 respectively. Adjacent ring grooves are not connected, and the ring grooves are not through-separated. The thermal insulation ring plates 6 are uniformly arranged on the inner wall of the shell 1 and tilted toward the air intake direction.

[0027] Specifically, Figure 2 and Figure 3 As shown, the heat-insulating ring plates 6 are all inclined toward the right side, and along the inclination direction of the heat-insulating ring plates 6, the end of the upper heat-insulating ring plate 6 in contact with the inner wall of the shell 1 is located inside the free end of the lower heat-insulating ring plate 6. In this embodiment, the heat-insulating ring plates 6 are first fixed in the precipitated ring groove by bonding, and then fixed on the inner wall of the shell 1 by bonding, and the heat-insulating layer formed by the mutually stacked heat-insulating ring plates 6 is thicker than the heat-insulating layer formed by the heat-insulating ring plates 6 laid in a plane, and the contact area between the heat-insulating ring plates 6 and the gasket 5 is increased, while the contact area between the heat-insulating ring plates 6 and the inner wall of the shell 1 is reduced.

[0028] In addition, an air intake guide plate extending to the catalyst carrier 3 is installed in the air intake conical end, and the air intake guide plate and the sedimentation cooperate to guide and stabilize the flow. In this embodiment, the distance between the left end of the catalyst carrier 3 and the air intake pipe 2 is greater than the distance between the right end and the air outlet pipe, which facilitates the discharge of the gas passing through the catalyst carrier 3.

[0029] like Figure 4As shown, in another embodiment 2, a heat insulation layer can be further provided on the inner wall of the shell 1, and a heat insulation ring plate 6 is formed by the heat insulation layer itself, and then the heat insulation ring plate 6 is fixed to the precipitated ring groove by bonding, so as to increase the stability of the connection between the heat insulation layer and the liner 5, and at the same time increase the area of ​​the heat insulation layer.

[0030] When the utility model is used, after the gas enters the shell body 1 from the intake pipe 2, the gasket 5 and the intake guide plate play a guiding role, and the heat insulation ring plate 6 installed in the gasket 5 plays a heat preservation role. The heat insulation ring plates 6 tiltedly placed in the ring groove are stacked on each other, which increases the heat insulation effect and also plays a skeleton support role, further supports the gasket 5, and at the same time increases the contact area with the gasket 5, which is not easy to fall off.

[0031] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A three-way catalytic converter with a gasket protection structure, comprising a shell and a catalyst carrier arranged in the shell, wherein both ends of the shell are respectively formed with an intake conical end and an outlet conical end connected to the catalyst carrier, and the intake conical end and the outlet conical end are respectively connected to an intake pipe and an outlet pipe, characterized in that: The inner wall of the shell is fixedly connected with a heat insulating pad layer, which includes a liner fixedly connected with the inner wall of the shell and a plurality of heat insulating ring plates equidistantly and obliquely arranged on the inner wall of the shell. The side of the liner in contact with the inner wall of the shell is provided with a plurality of ring grooves for inserting the heat insulating ring plates.

2. A three-way catalytic converter with a gasket protection structure according to claim 1, characterized in that: Along the inclination direction of the heat-insulating ring plates, one end of an upper heat-insulating ring plate of adjacent heat-insulating ring plates fixedly connected to the inner wall of the shell is located inside the free end of the lower heat-insulating ring plate.

3. A three-way catalytic converter with a gasket protection structure according to claim 2, characterized in that: The adjacent annular grooves are not connected.

4. The three-way catalytic converter with a gasket protection structure according to claim 2, characterized in that: A heat insulation layer is fixedly connected between the inner wall of the shell and the liner, and the heat insulation ring plates are all fixedly connected to the inner side of the heat insulation layer.

5. The three-way catalytic converter with a gasket protection structure according to claim 1, characterized in that: An intake guide vane extending to the catalyst carrier is arranged in the intake conical end.

6. The three-way catalytic converter with a gasket protection structure according to claim 1, characterized in that: The distance between the catalyst carrier and the intake pipe is greater than the distance between the catalyst carrier and the outlet pipe.

7. The three-way catalytic converter with a gasket protection structure according to claim 1, characterized in that: The shell comprises an upper storage body and a lower storage body which are detachably connected to each other.

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