CN2737958Y

CN2737958Y - Catalyst carrier for exhaust pipe

Info

Publication number: CN2737958Y
Application number: CN 200420096423
Authority: CN
Inventors: 张文信
Original assignee: XIAMEN XINYUAN TRAFFIC APPRATUS CO Ltd
Current assignee: XIAMEN XINYUAN ENVIRONMENT PROTECTION TECHNOLOGY CO., LTD.
Priority date: 2004-10-09
Filing date: 2004-10-09
Publication date: 2005-11-02
Anticipated expiration: 2014-10-09

Abstract

Disclosed is a catalyst carrier for exhaust pipe, which is a metal carrier for coating with a catalyst and is integrally formed by a stainless steel pipe, having a central channel, the carrier is formed with a plurality of unit recesses arranged according to at least one spiral cycloid path, and each recess on the inner wall of the pipe body is provided with a convex-shaped inner end face for increasing the coated area of the catalyst, so that the carrier can enlarge the necessarily coated area of the catalyst on the premise of that the carrier is limited in a smaller outer diameter and be kept smooth ventilation.

Description

The catalyst carrier of outlet pipe

Technical field

The utility model provides a kind of catalyst carrier of outlet pipe, particularly assembles the designed simple type catalyst carrier in aperture at the outlet pipe of 15～30mm.

Background technique

Heal strict waste gas emission standard in order to cater at present, some producers can be provided with catalyst carrier in outlet pipe, in order to content of harmful in the purifying exhaust air, make to be disposed to extraneous waste gas, are unlikely to influence air quality.

And knowing, comprise automobile, locomotive or other starts the aperture of the engine exhaust pipes of facility, is to decide according to engine exhaust amount size.Old the aperture of its outlet pipe is also less as the less locomotive engine of air displacement or the engine of other little facility, and the smaller aperture due scope of 15～30mm of leveling off to is very arranged.Group is established catalyst carrier in the outlet pipe of this small aperture, and whether must consider in the carrier can enough for the smoothness that waste gas passes through, and can be for problems such as whether catalyst coating area enough in the carrier.

Moreover catalyst carrier in the streets can be divided into honey comb like catalyst carrier a kind of tubular and another kind of haply.

Above-mentioned tubular carrier is to utilize a metal plate coils around forming tubular, and on the tubular inwall coating catalyst, for the usefulness of purifying exhaust air.This kind carrier has makes advantage simple and easy, that save processing cost and have good ventilation smoothness, and as easy as rolling off a log and be fit to be installed in 15～30mm pore diameter range outlet pipe.Yet, can be very limited in this kind of tubular carrier for the inner wall area of catalyst coating, cause catalyst coating quantity not sufficient easily and force the ability of purifying exhaust air to be limited to, be difficult to meet and heal strict air environmental protection standard.

Above-mentioned honeycomb carrier is to utilize a metal plate and another metal wave plate to fit mutually to reel to form, can dull and stereotyped or and the wave plate on the coating catalyst, for the usefulness of purifying exhaust air.This kind of carrier has large surface area can also have the efficient of promoting catalytic control waste gas for the advantage of coating more amount catalyst.Yet, if when being located at this kind of vehicle group in the outlet pipe of above-mentioned 15～30mm pore diameter range, will cause the difficulty in the processing of reeling, and can become littler and intensive because of the carrier restricted diameter causes inner honeycomb hole, when waste gas by the time be easy to generate vapour lock and now look like, so ventilation smoothness deficiency easily makes to form excessive back pressure in the outlet pipe, influences engine performance.

From the above, the producer lacks a kind of less outlet pipe assembling aperture (catalyst carrier manufacturing technology of 15～30mm) that is applicable in fact.

Summary of the invention

The purpose of this utility model is the defective that overcomes above-mentioned prior art, and under the prerequisite of keeping good ventilation smoothness, provides a kind of and can effectively increase catalyst coating area, makes catalyst carrier simple and easy and that can effectively reduce production costs.

The purpose of this utility model realizes by following technical proposals, the catalyst carrier of a kind of outlet pipe provided by the utility model, comprise that having an engine connects the outlet pipe of an aperture between 15～30mm, the exhaust pipe proximal end plants in an anechoic chamber, and the outlet pipe interplantation is provided with a catalyst carrier, it is characterized in that: this carrier is one to have the body of central channel, be formed with on the body according at least one spiral cycloid path and arrange the plurality of unit recess that forms, each recess has the interior edge face that presents convex on inboard wall of tube body, and each recess has the exterior edge face that presents sagged shape on tube wall.

The characteristics that the utility model had are:

1. directly make metallic carrier with central channel by a Stainless Steel Tube body by integral forming, and punching out on the carrier is formed with according at least one spiral cycloid path arrange the plurality of unit recess that forms, producing on the operation very simple and easyly, can effectively reduce the cost that produces of catalyst carrier.

2. by by formed central channel in the above-mentioned carrier, produce the good aeration smoothness.

3. by by formed plurality of unit recess on the above-mentioned carrier tube wall, make each recess on inboard wall of tube body, present the interior edge face of convex, can increase the required surface area of carrier inside coating catalyst.

4. pass through by the plurality of unit recess on the above-mentioned carrier tube wall, be to arrange the air guide path form that forms according at least one spiral cycloid path, effective exhaust gas routing, make waste gas flee in carrier with catalyst generation oxidation or and time of reduction reaction increased, to promote the efficient of catalytic control waste gas.

Can above-mentioned constituent parts recess or and tube wall on be to set out the plural mesh that spreads all over, behind the coating catalyst, can increase that waste gas enters in the carrier and the time of between plural mesh, fleeing, be beneficial under the prerequisite that does not influence the ventilation smoothness, promote the purification reaction efficiency between catalyst and the waste gas.

The technology that relevant the utility model adopted, means and effect thereof after lifting preferred embodiment now and cooperating graphic being described in more detail in, believe that the above-mentioned purpose of the utility model, structure and feature can obtain deeply and concrete understanding.

Description of drawings

Fig. 1 is a device schematic representation of the present utility model, and it illustrates that an engine connects an outlet pipe and the outlet pipe proximal end is planted device in an anechoic chamber, and is provided with the group configuration attitude of catalyst carrier in the outlet pipe interplantation;

Fig. 2 expresses the utility model one embodiment's front view, illustrates that punching out is formed with according to the equidistant some recesses arranged in spiral cycloid path on a body;

Fig. 3 expresses the side view of the utility model Fig. 2, illustrates that each recess and interior edge face thereof present the form that equal intervals is arranged in the equal circumference body;

Fig. 4 expresses another embodiment's of the utility model front view, illustrates that punching out is formed with according to the equidistant some recesses arranged in spiral cycloid path on a body;

Fig. 5 expresses the side view of the utility model Fig. 4, illustrates that each recess and interior edge face thereof present the form that equal intervals is arranged in the equal circumference body;

Fig. 6 expresses the local section schematic representation of the utility model body, illustrates that punching out is formed with plural mesh on this body and the recess thereof, and waste gas can be fled between the inside and outside end face of recess.

The member symbol

1 carrier; 10 bodys; 11 recesses; 12 interior edge faces; 13 exterior edge faces; 14 channels; 15 mesh; 2 outlet pipes; 20 grate flow channels; 21 anechoic chambers; 3 engines; 4 waste gas.

Embodiment

At first referring to shown in Figure 1, it discloses an engine 3 and connects the outlet pipe 2 of an aperture between 15～30mm, and its body proximal end plants in an anechoic chamber 21, therebetween and form one engine exhaust is directed to extraneous grate flow channel 20.Carrier 1 of the present utility model is a rounded cylindrical form of making these outlet pipe 2 apertures that coincide, so that carrier 1 is planted in this outlet pipe 2.

The carrier 1 that this coating catalyst is used comes down to turn to a body 10 forms by a stainless steel metal coiled sheet that contains metal ingredients such as iron, chromium, aluminium, makes body 10 centers have a central channel 14 (as Fig. 3 and shown in Figure 5); And,

Be formed with on this body 10 according at least one spiral cycloid path and arrange the plurality of unit recess 11 (extremely shown in Figure 5) that forms as Fig. 2, and each recess 11 presents the equal intervals arrangement form in the body 10 of equal circumference, each recess 11 is formed with the interior edge face 12 of convex on body 10 inwalls simultaneously, and each recess 11 is formed with the exterior edge face 13 of sagged shape on body 10 outer walls.In view of the above, can on the interior edge face 12 of each convex with the inwall of body 10 on coating one deck catalyst.

By the constitution content of above-mentioned carrier 1 as can be known, be by single stainless steel body 10 one-body molded making, therefore have and conveniently make and can reduce the usefulness that produces cost.In addition, be formed with the central channel 14 of a broadness in this body 10, can make waste gas by carrier 1 inside the time, can possess the good aeration smoothness.Simultaneously, the above-mentioned interior edge face 12 that presents convex can effectively increase the area of coating catalyst in the body 10, when making carrier 1 must plant in the outlet pipe 2 in above-mentioned less assembling aperture, still can be under the prerequisite of possessing the smoothness of ventilating, the coating area of amplification catalyst necessity.

Moreover, above-mentioned each unit recess 11, be to arrange the air guide path form that forms according at least one spiral cycloid path, therefore effective exhaust gas routing, make waste gas flee in carrier 1 with catalyst generation oxidation or and time of reduction reaction increased, to promote the efficient of catalytic control waste gas.

In addition, on body 10 walls and some recesses 11 thereof of above-mentioned carrier 1, be but that punching out forms plural mesh 15 (as shown in Figure 6), waste gas 4 can be fled between interior edge face 12 and exterior edge face 13 by mesh 15, the time that allows waste gas 4 be stranded in the catalyst carrier 1 can increase, be beneficial under the prerequisite that does not influence the ventilation smoothness, promote the purification reaction efficiency between catalyst and the waste gas.

The above only is the utility model preferred embodiment, when not limiting this novel practical range with this, i.e. simple equivalent conversion and modification of stating according to the utility model claim and description such as all should belong in the scope that the utility model patent contains.

Claims

1, a kind of catalyst carrier of outlet pipe, it comprises that having an engine connects the outlet pipe of an aperture between 15～30mm, the exhaust pipe proximal end plants in an anechoic chamber, and the outlet pipe interplantation is provided with a catalyst carrier, it is characterized in that:

This carrier is one to have the body of central channel, be formed with on the body according at least one spiral cycloid path and arrange the plurality of unit recess that forms, each recess has the interior edge face that presents convex on inboard wall of tube body, and each recess has the exterior edge face that presents sagged shape on tube wall.

2, the catalyst carrier of outlet pipe according to claim 1 is characterized in that having plural mesh on this body and the recess thereof.