CN2202184Y

CN2202184Y - Exhaust pipe for automobiles and locomotives

Info

Publication number: CN2202184Y
Application number: CN 94224357
Authority: CN
Inventors: 陈庆云
Original assignee: Juhui Industry Co ltd
Current assignee: Juhui Industry Co ltd
Priority date: 1994-07-13
Filing date: 1994-07-13
Publication date: 1995-06-28
Anticipated expiration: 2004-07-13

Abstract

The utility model relates to an exhaust pipe for automobiles and locomotives. The utility model is mainly composed of a sleeve pipe and an inner pipe. The diameter of the intermediate section of the inner pipe is smaller than the inner diameter of the sleeve pipe, and the outer diameters of the both ends are equal with the inner diameter of the inner pipe. One end of the inner pipe is fixed with the sleeve pipe to form a fixing part, and the proper positions of both sides of the other end respectively form a tangent plane. The inner pipe can be inserted in the sleeve pipe, and the inner pipe and the sleeve pipe are welded to integration at the fixing part. A notch is formed between the tangent plane of the other end and the peripheral sleeve pipe. Thus the practical exhaust pipe which is easily bent and processed and can not be scorched or allochroic because of high temperature is provided.

Description

Exhaust pipe for automobiles and locomotives

The utility model relates to a kind of improvement of steam turbine vehicle exhaust pipe, especially refer to that a kind of interior pipe and the bending place of sleeve pipe keep unsettled exhaust pipe structure, it is easy to change to reach bending by this, and the effect of maintenance inner hollow, and partly be not in contact with one another in the middle of interior pipe and the sleeve pipe, Guan Buhui reaches sleeve pipe with high temperature in making, and avoids sleeve pipe because of the overheated purpose that produces variable color.

The outlet pipe of steam turbine car, main effect is the Waste gas outlet place that is connected in engine, use the waste gas that guiding is discharged by Waste gas outlet, through silencer and waste gas filter, and reach the purpose of noise reduction and filtration, though therefore suitable simple of the structure of outlet pipe, but really indispensable member for the steam turbine car, the Waste gas outlet waste gas of discharging again, be the gas of gasoline firm knocking fuel in cylinder, thus the suitable height of temperature, so contact is injured because of carelessness in order to guarantee Security avoiding human body, so outlet pipe all is socketed to form by interior pipe and sleeve pipe, to reduce the surface temperature of outlet pipe.

And present being seen exhaust pipe structure, see also shown in Figure 4, wherein outlet pipe 20 plugs pipe 22 within sleeve pipe 21, and interior pipe 22 1 end ends 23 diameters are bigger and eccentric, utilize this end 23 and sleeve pipe 21 to bend packing to outer rim simultaneously, end is then in interior pipe 22 eccentric parts and sleeve pipe 21 solid weldings in addition, and the outer of pipe 22 forms smooth 24 of contacting because of eccentric part and sleeve pipe 21 inner edges in making, the space of 21 formation of pipe 22 and sleeve pipe, one off-centre as shown in Figure 5 in making by this, again because outlet pipe 20 is appearance and other device that cooperates the steam turbine car, so must bend outlet pipe 20, but metal tube is easy to distortion or breaks when high temperature bends, so present technology of using of industry, be that the one end is temporarily sealed, and with water pour into make in the outlet pipe 20 water riddle in pipe 22 and in

pipe

22 and 21 of sleeve pipes, and with its freezing water shape that build-ups ice that makes, bend outlet pipe 20 again, so just can avoid this pipe to produce distortion improperly, break or situation that sleeve pipe 21 and interior pipe 22 are in contact with one another; Do not improve part to the greatest extent but existing structural design still has, and have some shortcomings, its shortcoming is as back:

The first, has the easily deformable shortcoming of bending: because 21 smooth 24 of forming a straight line shape of the interior pipe 22 of existing structure and sleeve pipe, so it is different owing to interior pipe 22 when bending with the bending curvature of sleeve pipe 21, pipe 22 and sleeve pipe 21 are smooth 24 place's mutual extrusion in making, and the generation resistance causes the difficulty in the bending process, adds simultaneously easily to produce distortion improperly man-hour.

The second, outlet pipe 20 surperficial Yi Yingaore produce and burn variable color: 22 of the outer sleeve 21 of outlet pipe 20 and interior pipes form a faying surface 24, though both still are contact condition after bending, when therefore using, the gas of high temperature can be reached high-temperature the surface of sleeve pipe 21 by the surface of contact of interior pipe 22 and sleeve pipe 21, and lose heat insulation effect, still have the worry of scalding human body to turn round and look at, the surface of outlet pipe 20 Yin Gaowen and variable color easily simultaneously.

By above-mentioned explanation as can be known, existing exhaust pipe structure can produce the shortcoming that is difficult for bending or distortion when bending process, and then easy shortcoming because of overheated and surperficial generation variable color when using is so existing structure really has necessity of improvement.

Main purpose of the present utility model is: the steam turbine vehicle exhaust pipe that a kind of improvement is provided, its main purpose is to form bigger diameter at the two end part of interior pipe, and be placed in the sleeve pipe, wherein an end forms fixing part, and fixed with sleeve pipe welding, and the termination side is provided with tangent plane in addition, makes between the sleeve pipe of tangent plane and periphery and forms breach, the pipe periphery contact with sleeve pipe fully and is hollow state in making by this, and not yielding and can be heat insulation and avoid surperficial purpose because of overheated variable color when reaching bending.

The utility model provides a kind of steam turbine vehicle exhaust pipe of improvement, and it mainly is provided with the sleeve pipe of hollow, is provided with the interior pipe of intermediate section diameter less than sleeve pipe in sleeve pipe, it is characterized in that:

Interior pipe two end part external diameter slightly equals the internal diameter of sleeve pipe, and the cross section of two end part and intermediate section is the design of concentric, and wherein an end and Socket welding are connected into fixing part, end then is provided with tangent plane in addition, and form breach between the sleeve pipe of tangent plane and outer periphery, be the kenel of hollow between the cross section in making by this in the middle of the pipe and the cross section of sleeve pipe, thereby a kind of exhaust pipe structure of practicality is provided.

Advantage of the present utility model is as follows:

1. the utlity model has the advantage that is easy to bend: mainly

interior pipe

12 and 11 of the sleeve pipes because of the utility model bending place all is hollow state, though interior pipe 12 is different with the bending curvature of sleeve pipe 11 during the event bending, but 12 freezing build-uping ice of water of sleeve pipe 11 and interior pipe, when making its bending process, not yielding and effect hollow in the middle of keeping.

2. the utlity model has outlet pipe 10 in the time of can avoiding engine exhaust and burn the advantage of variable color because of high temperature causes: since in of the present utility model pipe 12 peripheries and 11 of sleeve pipes all to form hollow state contactless, therefore the high temperature that discharging waste gas produced, high temperature can not reached sleeve pipe 11 surfaces by interior pipe 12, so can be because of the overheated phenomenon that produces outlet pipe 10 surface discolourations.

Further specify structure characteristic of the present utility model and purpose below in conjunction with accompanying drawing.

Brief Description Of Drawings:

Fig. 1 is a schematic appearance of the present utility model.

Fig. 2 is a generalized section of the present utility model.

Fig. 3 is embodiment's schematic representation of the present utility model.

Fig. 4 is the generalized section of existing structure.

Fig. 5 is the sectional schematic diagram of existing structure.

Structure content about the utility model outlet pipe, please at first consult Figure 1 and Figure 2, be respectively outward appearance of the present utility model and generalized section, this outlet pipe 10 mainly is to be made of the sleeve pipe 11 of hollow and 12 of interior pipes, the external diameter of interior pipe 12 is less than the internal diameter of sleeve pipe 11, and in interior pipe 12 appropriate locations be provided with the perforation 13, and the end, two ends 14 of

interior pipe

12,16 diameter centre is big, and its external diameter slightly equals the internal diameter of sleeve pipe 11, while two

end part

14,16 with interior pipe 12 in the middle of the cross section be concentric shape, wherein an end 14 both sides appropriate locations form tangent plane 15 again, and above-mentioned is overall structure of the present utility model.

See Fig. 1 again again, shown in Figure 2, assembling of the present utility model is quite easy, at first interior pipe 12 is inserted sleeve pipe 11 inside, the end 14 at pipe 12 two ends wherein, 16 internal diameters with sleeve pipe 11 contact, and end 16 become fixing part 17 with the periphery of sleeve pipe 11 with the welding manner solid welding, in addition the tangent plane 15 of end 14 then and 11 of the sleeve pipes of outer periphery form breach 18, pipe 12 is positioned at the place, middle of sleeve pipe 11 in so making, even interior pipe 12 remove end 16, the cross section of intermediate portion outside 14 and sleeve pipe 11 is fully not state of contact, finishes of the present utility model group by this and establishes; Moreover please cooperate shown in Figure 3, and desire is when bending outlet pipe 10 of the present utility model, then fixing part 17 is temporarily sealed, again water is poured in the outlet pipe 10 by interior pipe 12 and breach 18 places, by perforation 13 design make water riddle in 11 of pipe 12, interior pipe 12 and sleeve pipes, again water-cooled is freezed ice, then bent, be bent into outlet pipe 10 as shown in Figure 3.

Claims

1, a kind of steam turbine vehicle exhaust pipe, it is provided with the sleeve pipe of hollow, is provided with the interior pipe of intermediate section external diameter less than casing inner diameter in sleeve pipe, it is characterized in that:

Interior pipe two end part external diameter slightly equals the internal diameter of sleeve pipe, and the cross section of two end part and intermediate section is the design of concentric, and wherein an end and Socket welding are connected into fixing part, end then is provided with tangent plane in addition, and form breach between the sleeve pipe of tangent plane and outer periphery, be the kenel of hollow between the cross section in making by this in the middle of the pipe and the cross section of sleeve pipe.