CN216381564U - Light high-efficiency waste gas cooler - Google Patents

Light high-efficiency waste gas cooler Download PDF

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Publication number
CN216381564U
CN216381564U CN202121169562.0U CN202121169562U CN216381564U CN 216381564 U CN216381564 U CN 216381564U CN 202121169562 U CN202121169562 U CN 202121169562U CN 216381564 U CN216381564 U CN 216381564U
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cooling
pipe
exhaust gas
gas cooler
light
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CN202121169562.0U
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黄晔
薛亮
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Changhzou Frp Boatbuilding Co ltd
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Changhzou Frp Boatbuilding Co ltd
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Abstract

The utility model belongs to the technical field of waste cooling, and particularly relates to a light-weight efficient waste gas cooler which comprises an exhaust pipe and a cooling pipe sleeved outside the exhaust pipe, wherein a screen type mixer is arranged at the front end of the exhaust pipe, a cooling channel spirally wound along the outer wall of the exhaust pipe is arranged in the cooling pipe, the front end opening of the cooling channel is communicated with the screen type mixer, a pipe body in the front part of the cooling pipe gradually shrinks towards the axis to form a straight exhaust port at the front end of the screen type mixer, and the light-weight efficient waste gas cooler has the advantages of high cooling efficiency and small size, and is suitable for tail gas emission cooling of a main engine of a boat.

Description

Light high-efficiency waste gas cooler
Technical Field
The utility model belongs to the technical field of waste cooling, and particularly relates to a light efficient waste gas cooler.
Background
The marine diesel engine has high power, a large amount of tail gas is discharged during working, the temperature of the tail gas is high, and the waste gas needs to be cooled. The existing exhaust gas cooler for cooling the tail gas of the diesel engine is of a structure with a large pipe sleeved with a small pipe, the small pipe is an exhaust pipe, the large pipe is a cooling pipe, the exhaust gas is discharged through the small pipe, cooling water is introduced between the large pipe and the small pipe, the cooling water is introduced from one end and is led out from the other end, and the exhaust pipe and the exhaust gas are cooled.
The utility model relates to a tail gas discharge system and an engineering vehicle (application number 201910941012.7), and particularly discloses a cooling device which comprises a heat exchanger, wherein the heat exchanger comprises a heat transfer pipe, the heat transfer pipe comprises a part arranged around an air outlet pipe, and the heat transfer pipe is arranged around the heat outlet pipe, so that the hot tail gas discharged by a power unit can be sequentially cooled twice through a main body and the air outlet pipe, although the heat transfer and cooling efficiency is improved, the heat outlet pipe is not directly contacted with the heat exchange pipe, and the heat transfer and cooling efficiency is still greatly influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a light-weight efficient waste gas cooler, which has the advantages of high cooling efficiency and small size and is suitable for cooling the tail gas emission of a main engine of a boat.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
the utility model provides a light-duty high-efficient exhaust gas cooler, establishes the outside cooling tube at the blast pipe including blast pipe, cover, the blast pipe front end be equipped with sieve formula blender, the cooling tube in be equipped with along the blast pipe outer wall be spiral coil's cooling channel, the front end opening of cooling channel switches on to sieve formula blender department, the anterior body of cooling tube is gradually to the axle center shrink at the air vent that sieve formula blender front end was in line formed.
Further, the cooling tube establish the exhaust gas discharge section at blast pipe, the outside cooling chamber section of sieve formula blender, sieve formula blender front side including the cover, the cooling say and set up in the cooling chamber section, the front end of cooling chamber section is the toper portion, the less front end of toper portion internal diameter meets with sieve formula blender front end, the rear end of exhaust gas discharge section meets with the front end of toper portion.
Furthermore, the screen mixer is a mixing pipe arranged at the front end of the exhaust pipe, and the pipe wall of the mixing pipe is provided with a plurality of uniformly distributed through holes.
Furthermore, the pipe diameter of the waste gas discharge section is not less than that of the exhaust pipe.
Furthermore, a spiral plate is arranged in the cooling cavity section, and the spiral plate divides the space formed between the exhaust pipe and the cooling cavity section to form the cooling channel.
Furthermore, the outer wall of the spiral plate is connected with the inner wall of the cooling cavity section, and the inner wall of the spiral plate is connected with the outer wall of the exhaust pipe.
Furthermore, a cooling medium injection port is arranged on the rear side of the cooling pipe.
Further, the cooling medium is water.
Furthermore, the wall thickness of the mixing pipe is consistent with that of the exhaust pipe.
Furthermore, the spiral plate is provided with at least one channel.
The utility model has the beneficial effects that: by adopting the scheme, the method has the advantages that,
1. the heat absorption time of the cooling water is prolonged through the spiral cooling water flow channel, the pressure of the cooling water passing through the sieve type mixer is increased through the conical part, and the cooling efficiency is obviously improved;
2. the exhaust gas discharge section converges towards the axis of the exhaust pipe, the diameter of the exhaust port is reduced to the diameter of the exhaust pipe, the size of the whole pipeline of the exhaust gas pipe is reduced, the size of the exhaust gas cooler is small, the weight is light, the length of the exhaust gas cooler is shortened by adopting a spiral cooling channel, the exhaust back pressure of the main engine is reduced, and the spiral cooling channel is more suitable for cooling the exhaust gas of the diesel engine of the boat;
3. the cooling water after absorbing heat is atomized after passing through the sieve type mixer and is fully mixed with the high-temperature waste gas, the atomized cooling water absorbs heat and is vaporized, the waste gas is cooled again, and meanwhile, the temperature of the exhaust port is obviously reduced, so that a connecting rubber pipe of the waste gas cooler is in a reasonable temperature environment and is not ablated;
4. the spiral cooling channel has small influence on the flow of cooling water due to the rotating speed of the host and the flow of the cooling water pump, the cooling water can be always in contact with the outer wall of the exhaust pipe to absorb heat, the exhaust pipe is comprehensively cooled, and the cooling efficiency is high, so that the ablation of the inner pipe and the outer pipe of the waste gas cooler is avoided;
5. the exhaust gas cooler has small size, light weight and small occupied space, and is suitable for cooling the tail gas exhausted by the main engine of the ship.
Drawings
The foregoing and other objects, features, and advantages of the utility model will be apparent from the following detailed description taken in conjunction with the accompanying drawings.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic cross-sectional structure diagram according to an embodiment of the present invention.
FIG. 3 is a cross-sectional view of one embodiment of the present invention.
Wherein: 1 is an exhaust pipe, 2 is a cooling pipe, 2-1 is a cooling channel, 2-2 is an injection port, 21 is a cooling cavity section, 22 is an exhaust gas discharge section, 23 is a conical part, 24 is a spiral plate, 3 is a sieve type mixer, 3-1 is a mixing pipe, and 3-2 is a through hole.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
Example 1: referring to fig. 1 and 2, a light-weight and efficient exhaust gas cooler comprises a straight tubular exhaust pipe 1 and a cooling pipe 2 sleeved outside the exhaust pipe 1, wherein a cooling medium, preferably water, flows through the cooling pipe 2, the exhaust gas pipe 1 discharges the cooling pipe 2, the cooling pipe 2 cools the exhaust gas, a tubular screen mixer 3 is arranged at the front end of the exhaust pipe 1, the cooling pipe 2 and the screen mixer 3 are coaxial with the exhaust pipe 1, a cooling channel 2-1 spirally wound along the outer wall of the exhaust pipe 1 is arranged inside the cooling pipe 2, a cooling water inlet 2-2 is arranged at the rear end of the cooling pipe 2, the cooling water is continuously input into the cooling channel 2-1 in the cooling pipe 2 through an externally arranged cooling water supply device, and flows forwards along the cooling channel 2-1 in the cooling pipe 2 to form a spiral cooling water flow, the front end opening of the cooling channel 2-1 is communicated to the sieve mixer 3, and the cooling water is discharged to the sieve mixer 3 from the front end opening of the cooling channel 2-1 around the outer wall of the dry type exhaust pipe 1 according to the arrangement direction of the flow channel.
The cooling water keeps full contact with the outer wall of the dry type exhaust pipe 1 in the flowing process, so that the pipe body of the dry type exhaust pipe 1 is comprehensively cooled, the flow direction is stable, the cooling water always keeps contact with the outer wall of the exhaust pipe 1 to absorb heat in the flowing process, the heat of the exhaust pipe 1 is continuously and effectively absorbed, and the waste gas is continuously cooled, because the flow direction is stable, the cooling water always absorbs heat of the waste gas in the exhaust pipe 1 in the forward flowing process, the waste gas cooling efficiency is greatly improved, the local burning phenomenon of the exhaust pipe 1 is effectively reduced and avoided, the spiral cooling channel 2-1 increases the flow stroke of the cooling water, the heat absorption time is prolonged, the waste gas cooling cavity has high heat dissipation efficiency, the structural design of the cooling channel 2-1 of the waste gas cooler weakens the influence of the pumping flow of a cooling water pumping mechanism, and the timely pumping flow is small, the cooling water can still advance along the set route, and in time when the rotating speed of the host is lower, the cooling water can also advance along the set route and always absorb heat.
Referring to fig. 3, the screen mixer 3 adopts a tubular structure and comprises a mixing pipe 3-1 connected to the front end of an exhaust pipe 1, a plurality of through holes 3-2 are uniformly arranged on the pipe wall of the mixing pipe 3-1, the through holes 3-2 have small apertures, screen holes are formed at the positions of the through holes 3-2 on the mixing pipe 3-1, cooling water after heat absorption is atomized when passing through a screen opening, because waste gas is discharged forwards along the mixing pipe 3-1, the pressure intensity at the position in the mixing pipe 3-1 is small due to high-speed moving waste gas flow, suction is generated on water flowing to the through holes 3-2, atomization is promoted, the atomized cooling water is fully mixed with high-temperature waste gas of a diesel engine more quickly, the temperature of the waste gas is reduced again, a connecting rubber pipe of the waste gas cooler is in a reasonable temperature environment and is not easy to ablate, the pipe wall thickness of the mixing pipe 3-1 is consistent with that of the exhaust pipe 1, the exhaust passage is smooth.
Specifically, referring to fig. 1 and 3, the cooling pipe 2 includes a cooling cavity section 21 sleeved outside the exhaust pipe 1 and the screen mixer 3, and a waste gas discharge section 22 at the front side of the screen mixer 3, the cooling channel 2-1 is disposed in the cooling cavity section 21, the front end of the cooling cavity section 21 is a tapered portion 23, the front end of the tapered portion 23 with a smaller inner diameter is connected with the front end of the mixing tank 3-1, the rear end of the waste gas discharge section 22 is connected with the front end of the tapered portion 23, the waste gas discharge section 22 forms an exhaust port, the pipe diameter of the waste gas discharge section 22 is not smaller than that of the exhaust pipe 1, preferably, the inner diameter of the waste gas discharge end 22 is equal to that of the exhaust pipe 1, the pipe diameter of the cooling cavity section 21 gradually transits to the waste gas discharge section 22 through the tapered portion 23, on one hand, the size of the cooling pipe 2 is reduced, and then the size of the cooler is reduced, on the premise that the cooling effect is not affected, the size of the cooler is small, light in weight, the design size of diesel engine exhaust pipe also can correspondingly reduce, the space occupies for a short time, be applicable to the ships and light boats more, on the other hand, toper portion 23 is located hybrid tube 3-1 department, can accelerate the atomizing of cooling water in hybrid tube 3-1 department, through sieve mesh atomizing back, water and diesel engine high temperature waste gas intensive mixing, improve the mixing efficiency with waste gas after the atomizing, can effectively reduce the temperature of exhaust gas discharge section 22, make exhaust gas cooler connecting rubber tube be in under the reasonable temperature environment, be unlikely to the ablation, the cooling effect is showing and is promoting.
The inner wall of the cooling cavity section 21, the outer walls of the exhaust pipe 1 and the mixing pipe 3 form a heat dissipation space, a spiral plate 24 is arranged in the heat dissipation space, the outer wall of the spiral plate 24 is connected with the inner wall of the cooling cavity section 21 in a welding mode, the inner wall of the spiral plate 24 is connected with the outer wall of the exhaust pipe 1 in a welding mode, the front end of the spiral plate 24 extends to the mixing pipe 3-1, the spiral plate 24 divides the heat dissipation space to form a cooling channel 2-1, the structure is simple, manufacturing is convenient, atomized water is gathered towards the center of the dry-type exhaust pipe 1, and cooling efficiency is improved.
Example 2: the difference between this embodiment and embodiment 1 is that in this embodiment, two spiral plates 24 are provided, two parallel cooling channels 2-1 are formed by the two spiral plates 24, an annular buffer space is provided at the rear end of the cooling cavity section 21, the rear ends of the two cooling channels 2-1 are communicated with the buffer space, the front end openings of the two cooling channels 2-1 extend to the mixing pipe 3-1, the number of spiral plates 24 is increased, the actual heat dissipation contact area between water and the exhaust pipe can be increased, and the heat dissipation effect is improved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiment according to the present invention are within the scope of the present invention.

Claims (10)

1. The utility model provides a light-duty high-efficient exhaust gas cooler, includes that blast pipe, cover establish the outside cooling tube of blast pipe, its characterized in that: blast pipe front end be equipped with the sieve formula blender, the cooling tube in be equipped with along the blast pipe outer wall and be spiral coil's cooling channel, the front end opening of cooling channel switches on to sieve formula blender department, the anterior body of cooling tube is gradually to the axle center shrink at the gas vent that sieve formula blender front end formed the straight row.
2. The light-duty, high efficiency exhaust gas cooler of claim 1, wherein: the cooling tube establish the exhaust gas discharge section at blast pipe, the outside cooling chamber section of sieve formula blender, sieve formula blender front side including the cover, the cooling say and set up in the cooling chamber section, the front end of cooling chamber section is the toper portion, the less front end of toper portion internal diameter meets with sieve formula blender front end, the rear end of exhaust gas discharge section meets with the front end of toper portion.
3. A light-duty, high efficiency exhaust gas cooler according to claim 1 or 2, characterized in that: the screen type mixer is a mixing pipe arranged at the front end of the exhaust pipe, and a plurality of uniformly distributed through holes are formed in the pipe wall of the mixing pipe.
4. The light-duty, high efficiency exhaust gas cooler of claim 2, wherein: the pipe diameter of the waste gas discharge section is not less than that of the exhaust pipe.
5. The light-duty, high efficiency exhaust gas cooler of claim 2, wherein: the cooling cavity section is internally provided with a spiral plate, and the spiral plate divides the space formed between the exhaust pipe and the cooling cavity section to form the cooling channel.
6. The light-duty, high efficiency exhaust gas cooler of claim 5, wherein: the outer wall of the spiral plate is connected with the inner wall of the cooling cavity section, and the inner wall of the spiral plate is connected with the outer wall of the exhaust pipe.
7. The light-duty, high efficiency exhaust gas cooler of claim 1, wherein: and a cooling medium injection port is arranged on the rear side of the cooling pipe.
8. The light-duty, high efficiency exhaust gas cooler of claim 7, wherein: the cooling medium is water.
9. The light-duty, high efficiency exhaust gas cooler of claim 3, wherein: the wall thickness of the mixing pipe is consistent with that of the exhaust pipe.
10. The light-duty, high efficiency exhaust gas cooler of claim 5, wherein: the spiral plate is provided with at least one channel.
CN202121169562.0U 2021-05-28 2021-05-28 Light high-efficiency waste gas cooler Active CN216381564U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121169562.0U CN216381564U (en) 2021-05-28 2021-05-28 Light high-efficiency waste gas cooler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121169562.0U CN216381564U (en) 2021-05-28 2021-05-28 Light high-efficiency waste gas cooler

Publications (1)

Publication Number Publication Date
CN216381564U true CN216381564U (en) 2022-04-26

Family

ID=81215767

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121169562.0U Active CN216381564U (en) 2021-05-28 2021-05-28 Light high-efficiency waste gas cooler

Country Status (1)

Country Link
CN (1) CN216381564U (en)

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