CN214499210U

CN214499210U - Preceding stage catalyst converter assembly

Info

Publication number: CN214499210U
Application number: CN202120576478.4U
Authority: CN
Inventors: 樊江波
Original assignee: Chongqing Xinhuilian Technology Co ltd
Current assignee: Chongqing Xinhuilian Technology Co ltd
Priority date: 2021-03-22
Filing date: 2021-03-22
Publication date: 2021-10-26
Anticipated expiration: 2031-03-22

Abstract

The utility model provides a preceding stage catalyst assembly, which comprises a catalyst cylinder with an air inlet end and an air outlet end, a three-way catalyst core arranged inside the catalyst cylinder, and a flow guide core; the flow guide core body is arranged in the catalytic converter barrel and is arranged between the air inlet end and the three-way catalyst core body, a spherical groove is arranged on the flow guide core body close to the air inlet end, and a plurality of spiral flow guide channels are arranged between the inner side wall of the spherical groove and the other end surface of the flow guide core body; when the automobile exhaust diversion device works, automobile exhaust flows in from the air inlet end, the automobile exhaust is shunted to each diversion channel in the spherical groove, and the airflow resistance can be reduced by the structure of the spherical groove. The utility model discloses a preceding stage catalyst converter assembly can improve automobile exhaust's divergence, can reduce automobile exhaust and erode the central concentrated of the terminal surface center of three way catalyst core after the inlet end flows in, reduces the central point of three way catalyst core and puts the carbon deposit.

Description

Preceding stage catalyst converter assembly

Technical Field

The utility model belongs to the technical field of automobile exhaust system, concretely relates to preceding stage catalyst converter assembly.

Background

The front-stage catalyst is the most important purifying device installed in the exhaust system of the automobile, and can convert harmful gases such as carbon monoxide, hydrocarbon, nitrogen oxide and the like discharged from the exhaust of the automobile into harmless carbon dioxide, water and nitrogen through oxidation and reduction.

The existing front-stage catalyst comprises a catalyst cylinder body with an air inlet end and an air outlet end and a three-way catalyst core body arranged inside the catalyst cylinder body, wherein the air inlet end of the catalyst cylinder body is connected with an exhaust outlet of an engine, and automobile exhaust emitted by the engine enters the catalyst cylinder body to be subjected to oxidation and reduction reaction through the three-way catalyst core body and then is discharged from the air outlet end of the catalyst cylinder body. The inner diameter of the air inlet end of the catalyst cylinder is generally smaller than the inner diameter of the catalyst cylinder and the cross section of the three-way catalyst core, so that automobile exhaust flowing into the catalyst cylinder from the air inlet end of the catalyst cylinder intensively washes the center of the end face of the three-way catalyst core, and the divergence of the automobile exhaust entering the catalyst cylinder and contacting with the three-way catalyst core is poor, so that carbon deposition is easy to occur at the center of the three-way catalyst core.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art exists, the utility model provides a preceding stage catalyst converter assembly sets up the water conservancy diversion core in the inside catalyst converter barrel of preceding stage catalyst converter, automobile exhaust through the inlet end flow in the catalyst converter barrel in the water conservancy diversion core contact with the three way catalyst core again after the water conservancy diversion, the inside spiral flow way that sets up of water conservancy diversion core, improve automobile exhaust's divergence, reduce automobile exhaust and wash away the central concentrated of the terminal surface center of three way catalyst core after the inlet end flows in, reduce the central point of three way catalyst core and put the carbon deposit.

The utility model discloses a following technical scheme realizes:

a pre-stage catalyst assembly comprises a catalyst cylinder body with an air inlet end and an air outlet end and a three-way catalyst core body arranged in the catalyst cylinder body;

the catalyst comprises a catalyst barrel and is characterized by further comprising a flow guide core body, wherein the flow guide core body is arranged inside the catalyst barrel and is arranged between the air inlet end and the three-way catalyst core body, a spherical groove is formed in the flow guide core body and is close to the air inlet end, a plurality of spiral flow guide channels are arranged between the inner side wall of the spherical groove and the other end face of the flow guide core body, automobile tail gas flows out of an outlet of the automobile tail gas along the spiral flow guide channels and faces all directions, and air flow divergence is improved.

According to the above technical scheme, the utility model provides a pair of preceding stage catalyst converter assembly, beneficial effect lies in: when the preceding-stage catalyst assembly with the structure works, automobile exhaust flows in from the air inlet end, and is shunted to each flow guide channel in the spherical groove, and the structure of the spherical groove can reduce airflow resistance; the preceding-stage catalyst assembly with the structure can improve the divergence of automobile exhaust, reduce the concentrated scouring of the automobile exhaust flowing into the center of the end face of the three-way catalyst core body through the air inlet end and reduce the carbon deposition at the center of the three-way catalyst core body.

Further, the flow guide core body is made of ceramic materials, and the ceramic materials are high-temperature resistant and good in corrosion resistance.

The catalytic converter comprises a catalytic converter barrel, a catalyst support and a catalyst support, wherein the catalyst support is arranged in the catalyst support; specifically, accessible bolt and nut subassembly fixed connection between barrel anterior segment and the barrel middle section, between barrel middle section and the barrel back end, and the contact surface is equipped with sealed the pad.

The flow guide core body is arranged in the front section of the barrel body in a threaded connection mode; specifically, one end of the flow guide core body can extend into the middle section of the cylinder body for a certain length.

Further inject, the import one end of barrel anterior segment and the export one end of barrel back end are equallyd divide and are equipped with the flange interface respectively, are convenient for connect front and back end exhaust duct.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

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

Fig. 2 is the schematic view of the structure of the flow guiding core body of the present invention.

Fig. 3 is a sectional view taken along a line a-a in fig. 2.

In the drawings: 1-catalytic converter cylinder, 11-front cylinder, 12-middle cylinder, 13-rear cylinder, 2-three-way catalyst core, 3-guide core, 31-spherical groove, 32-guide channel, and 4-flange interface.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

In the description of the present application, it is to be understood that the terms "inside", "outside", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 to 3, a front-stage catalyst assembly includes a catalyst cylinder 1 having an inlet end and an outlet end, a three-way catalyst core 2 disposed inside the catalyst cylinder 1, and a flow guide core 3;

the catalytic converter cylinder 1 comprises a cylinder front section 11, a cylinder middle section 12 and a cylinder rear section 13, the cylinder front section 11 and the cylinder middle section 12 and the cylinder rear section 13 are detachably, hermetically and fixedly connected, and the structure is convenient for dismounting and replacing the flow guide core body 3 and the three-way catalyst core body 2 in the cylinder; specifically, the cylinder front section 11 and the cylinder middle section 12, and the cylinder middle section 12 and the cylinder rear section 13 can be fixedly connected through bolt and nut assemblies, and the contact end surfaces are provided with sealing gaskets;

the inlet end of the front barrel section 11 and the outlet end of the rear barrel section 13 are respectively provided with a flange interface 4, so that the front end and the rear end exhaust pipelines can be conveniently connected;

the automobile exhaust gas flow guiding device comprises a barrel front section 11 and a barrel rear section 13, wherein the barrel front section 11 and the barrel rear section 13 are both in a T shape, an inner thread is arranged on the inner side wall of one end, close to a barrel middle section 12, of the barrel front section 11, an outer thread is arranged on the outer side wall of a flow guiding core body 3, the flow guiding core body 3 is installed in the barrel front section 11 in a threaded connection mode, the flow guiding core body 3 is arranged between an air inlet end and a three-way catalyst core body 2, a spherical groove 31 is arranged on one end, close to the air inlet end, of the flow guiding core body 3, a plurality of spirally-through flow guiding channels 32 are arranged between the inner side wall of the spherical groove 31 and the other end face of the flow guiding core body 3, automobile exhaust gas flows out of outlets of the plurality of spirally-through flow guiding channels 32 and faces to all directions, and the air flow divergence is improved; specifically, one end of the flow guiding core body 3 can extend into the middle section 12 of the cylinder body for a certain length.

In this embodiment, the flow guiding core body 3 is made of a ceramic material, and the ceramic material has high temperature resistance and good corrosion resistance.

The working principle of the embodiment is as follows: when the front-stage catalyst assembly works, the flange interface 4 of the front section 11 of the cylinder body and the flange interface 4 of the rear section of the cylinder body are respectively connected with front and rear end exhaust pipelines; automobile exhaust discharged by an engine flows into the catalytic converter cylinder 1 from the air inlet end, the automobile exhaust flows to each flow guide channel 32 in the spherical groove 31, the structure of the spherical groove 31 can reduce airflow resistance, and the automobile exhaust is subjected to oxidation and reduction reactions by the three-way catalyst core body 2 and then is discharged from the air outlet end of the cylinder rear section 13 of the catalytic converter cylinder 1. The preceding-stage catalyst assembly with the structure can improve the divergence of automobile exhaust, reduce the concentrated scouring of the automobile exhaust flowing into the center of the end face of the three-way catalyst core body 2 through the air inlet end and reduce the carbon deposition at the center of the three-way catalyst core body 2.

Claims

1. The utility model provides a preceding stage catalyst converter assembly, is including the inside three way catalyst core that sets up of catalyst converter barrel and the catalyst converter barrel that has the inlet end and give vent to anger the end, its characterized in that:

still include the water conservancy diversion core, the water conservancy diversion core is installed in the inside of catalyst converter barrel, and the water conservancy diversion core is between inlet end and three way catalyst core, be close to the one end that admits air on the water conservancy diversion core and be equipped with spherical groove, be equipped with between the inside wall of spherical groove and another terminal surface of water conservancy diversion core and be a plurality of water conservancy diversion passageways that the heliciform link up.

2. The pre-catalyst assembly as set forth in claim 1, wherein: the catalytic converter barrel comprises a barrel front section, a barrel middle section and a barrel rear section, and the barrel front section is detachably, hermetically and fixedly connected with the barrel middle section and the barrel middle section.

3. The pre-catalyst assembly as set forth in claim 2, wherein: the utility model discloses a water conservancy diversion core, including barrel anterior segment, barrel middle section, water conservancy diversion core, barrel anterior segment and barrel back end all are the T type, the inside wall that the barrel anterior segment is close to barrel middle section one end is equipped with the internal thread, the lateral wall of water conservancy diversion core is equipped with the external screw thread, and the water conservancy diversion core passes through threaded connection's mode and installs in the barrel anterior segment.

4. The pre-catalyst assembly as set forth in claim 2, wherein: and the inlet end of the front section of the barrel and the outlet end of the rear section of the barrel are respectively provided with a flange connector.

5. The pre-catalyst assembly according to any one of claims 1 to 4, wherein: the flow guiding core body is made of ceramic materials.