CN215804792U

CN215804792U - Diesel engine exhaust pipe with explosion-proof function

Info

Publication number: CN215804792U
Application number: CN202122138693.9U
Authority: CN
Inventors: 吴志贺; 周桦康
Original assignee: Shijiazhuang Huachai Engine Technical Service Co ltd
Current assignee: Shijiazhuang Huachai Engine Technical Service Co ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2022-02-11
Anticipated expiration: 2031-09-06

Abstract

The utility model discloses a diesel engine exhaust pipe with an explosion-proof function, which comprises an exhaust pipe body with a double-layer nested structure, wherein the exhaust pipe body comprises an outer shell, a cooling water channel is nested in the outer shell, an exhaust pipeline is nested in the cooling water channel, a cooling water through cavity is formed between the cooling water channel and the outer shell, a gas heat insulation cavity is formed between the cooling water channel and the exhaust pipeline, and the outer shell is provided with an air inlet and an air outlet which are communicated with the exhaust pipeline, a water inlet pipe and a water outlet pipe which are communicated with the cooling water channel, and a gas pressure release valve which is communicated with the gas heat insulation cavity. The exhaust pipe adopts a nested structure, so that the overall safety performance of the exhaust pipe is greatly improved, on one hand, the gas heat insulation cavity can play a water sealing role through cooling water under the condition that cracks occur in the inner layer structure or the outer layer structure of the exhaust pipe body, on the other hand, the heat insulation and cooling effect is good, the exhaust pipeline is isolated from the outer shell body through the arrangement of the cooling water channel and the gas heat insulation cavity, the surface temperature of the exhaust pipe is reduced, and the exhaust pipe is suitable for the technical field of engine exhaust pipes.

Description

Diesel engine exhaust pipe with explosion-proof function

Technical Field

The utility model belongs to the technical field of engine exhaust pipes, and particularly relates to a diesel engine exhaust pipe with an explosion-proof function.

Background

In the conventional technology, the exhaust pipe is a casing which is usually formed by pouring aluminum materials after high-temperature melting, a plurality of gas channels which are uniformly distributed are formed inside the exhaust pipe, the exhaust pipe is of an integrally formed structure, the structural form is high in processing cost and poor in heat dissipation performance, the exhaust pipe is often in a high-temperature state, cracks are easily generated to cause gas leakage, the output power of an engine is influenced, and potential safety hazards are easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a structure for solving the problems that in the prior art, the exhaust pipe is high in structural form, high in processing cost and poor in heat dissipation performance, the exhaust pipe is always in a high-temperature state, cracks are easily generated to cause gas leakage, the output power of an engine is influenced, and potential safety hazards are easily caused.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a diesel engine blast pipe with explosion-proof function, includes the blast pipe body of double-deck nested structure, the blast pipe body includes the shell body, and the inside nestification of shell body has the cooling water course, and the inside nestification of cooling water course has exhaust duct, forms cooling water circulation chamber between cooling water course and the shell body, forms gaseous thermal-insulated chamber between cooling water course and the exhaust duct, sets up the air inlet and the gas vent that are linked together with exhaust duct on the shell body, the inlet tube and the drain pipe that are linked together with the cooling water course and the gaseous relief valve that is linked together with gaseous thermal-insulated chamber.

Furthermore, the exhaust pipeline comprises a first air inlet pipe and a second air inlet pipe, the inlet of the first air inlet pipe is communicated with the air inlet, and the outlet of the first air inlet pipe is communicated with the outlet of the second air inlet pipe through an air pipe.

Further, first intake pipe and second intake pipe are linked together through 3 trachea and 3 gas vents respectively, and each trachea passes through the cooling water course interval with the cooling and sets up.

Furthermore, one end of the air pipe is welded and fixed with the side wall of the first air inlet pipe or the second air inlet pipe, and the other end of the air pipe is welded and fixed with the air outlet.

Further, the shell body includes front shroud, back shroud, left side board, right side board, roof and the bottom plate through welded fastening, and on the front shroud was seted up to the air inlet, the gas vent evenly seted up on the roof, and the bottom plate front end is located to the inlet tube, and right side apron rear end is located to the drain pipe, and left side board front end is located to the gas relief valve.

Furthermore, the outer shell is made of a material with a small sensitivity coefficient to cold and hot alternation, and the exhaust pipeline is made of a high-temperature-resistant and corrosion-resistant material.

Further, the shell body is made of carbon steel.

Further, the material of the exhaust pipeline is stainless steel.

Due to the adoption of the structure, compared with the prior art, the utility model has the technical progress that: on one hand, the gas heat insulation cavity can play a water sealing role through cooling water under the condition that the inner layer or the outer layer structure of the exhaust pipe body cracks; on the other hand, by arranging the cooling water channel and the gas heat insulation cavity, the exhaust pipeline and the outer shell are isolated and insulated, and meanwhile, the cooling effect is good, the surface temperature of the exhaust pipe is reduced, and the exhaust pipe is suitable for the technical field of engine exhaust pipes.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model.

In the drawings:

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic perspective view of an embodiment of the present invention;

fig. 3 is a schematic structural diagram of another angle according to an embodiment of the present invention.

Labeling components: 1-outer shell, 11-top plate, 111-air outlet, 12-bottom plate, 13-front cover plate, 131-air inlet, 14-rear cover plate, 15-left side plate, 2-cooling water channel, 3-exhaust pipeline, 31-first air inlet pipe, 32-second air inlet pipe, 4-gas heat insulation cavity, 5-cooling water circulation cavity, 6-water inlet pipe, 7-water outlet pipe and 8-gas pressure relief valve.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the present invention.

The utility model discloses a diesel engine exhaust pipe with an explosion-proof function, which comprises an exhaust pipe body with a double-layer nested structure, wherein the exhaust pipe body comprises an outer shell 1, a cooling water channel 2 is nested in the outer shell 1, an exhaust pipeline 3 is nested in the cooling water channel 2, a cooling water circulation cavity 5 is formed between the cooling water channel 2 and the outer shell 1, a gas heat insulation cavity 4 is formed between the cooling water channel 2 and the exhaust pipeline 3, and the outer shell 1 is provided with an air inlet 131 and an air outlet 111 which are communicated with the exhaust pipeline 3, an water inlet pipe 6 and a water outlet pipe 7 which are communicated with the cooling water channel 2, and a gas pressure release valve 8 which is communicated with the gas heat insulation cavity 4.

The utility model has the beneficial effects that: on one hand, the gas heat insulation cavity 4 can play a water sealing role through cooling water under the condition that the inner layer or the outer layer structure of the exhaust pipe body cracks; on the other hand, by arranging the cooling water channel 2 and the gas heat insulation cavity 4, the exhaust pipeline 3 is isolated from the outer shell 1 and insulated, and meanwhile, the cooling effect is good, and the surface temperature of the exhaust pipe is reduced.

As a preferred embodiment, the exhaust duct 3 includes a first intake pipe 31 and a second intake pipe 32 having inlets communicating with the intake port 131, and outlets of the first intake pipe 31 and the second intake pipe 32 communicate with the air outlet 111 through air pipes, respectively. The first air inlet pipe 31 and the second air inlet pipe 32 are respectively communicated with the 3 air outlets 111 through 3 air pipes, and each air pipe and the cooling water channel 2 are arranged at intervals. One end of the air pipe is welded and fixed with the side wall of the first air inlet pipe 31 or the second air inlet pipe 32, and the other end of the air pipe is welded and fixed with the air outlet 111. Through setting up two intake pipes and corresponding the setting through 3 trachea and 3 gas outlets 111 respectively, the processing of being convenient for, and make gaseous more even distribution to each cylinder, guarantee engine output's stability.

As a preferred embodiment, as shown in fig. 2 and fig. 3, the outer casing 1 includes a front cover plate 13, a rear cover plate 14, a left side plate 15, a right side plate, a top plate 11 and a bottom plate 12 fixed by welding, the air inlet 131 is opened on the front cover plate 13, the air outlet 111 is uniformly opened on the top plate 11, the water inlet pipe 6 is arranged at the front end of the bottom plate 12, the water outlet pipe 7 is arranged at the rear end of the right cover plate, and the air relief valve 8 is arranged at the front end of the left side plate 15. The outer shell 1 is formed by welding a plurality of plates, and under the condition that the heat dissipation performance and the structural strength of the outer shell 1 and the exhaust pipeline 3 are both considered, the processing is convenient, and the production cost is low. The gas pressure relief valve 8 is arranged, so that automatic pressure relief can be realized when the temperature inside the gas heat insulation cavity 4 is too high and the pressure is too high, and the damage to the exhaust pipe caused by the too high pressure of the heat insulation cavity is prevented.

Furthermore, the outer shell 1 and the cooling water channel 2 are made of materials with small sensitivity coefficient to cold and heat alternation, and the exhaust pipeline 3 is made of high-temperature-resistant and corrosion-resistant materials. The shell body 1 is made of carbon steel. The shell body 1 and the exhaust pipeline 3 are made of different materials, so that heat transfer is facilitated, heat dissipation is facilitated, the surface temperature of the exhaust pipe is reduced, the exhaust pipeline is made of stainless steel, and the high-temperature resistance and corrosion resistance of the exhaust pipeline can prolong the service life of the exhaust pipe.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides a diesel engine blast pipe with explosion-proof function which characterized in that: the exhaust pipe body comprises a double-layer nested structure, the exhaust pipe body comprises an outer shell, a cooling water channel is nested inside the outer shell, an exhaust pipeline is nested inside the cooling water channel, a cooling water flowing cavity is formed between the cooling water channel and the outer shell, a gas heat insulation cavity is formed between the cooling water channel and the exhaust pipeline, an air inlet and an air outlet which are communicated with the exhaust pipeline, a water inlet pipe and a water outlet pipe which are communicated with the cooling water channel and a gas pressure release valve which is communicated with the gas heat insulation cavity are arranged on the outer shell.

2. An explosion-proof diesel engine exhaust pipe according to claim 1, characterized in that: the exhaust pipeline comprises a first air inlet pipe and a second air inlet pipe, the inlet of the first air inlet pipe is communicated with the air inlet, and the outlet of the first air inlet pipe is communicated with the outlet of the second air inlet pipe through an air pipe.

3. An explosion-proof diesel engine exhaust pipe according to claim 2, characterized in that: first intake pipe and second intake pipe are linked together through 3 trachea and 3 gas vents respectively, and each trachea passes through the cooling water course interval with the cooling and sets up.

4. An explosion-proof diesel engine exhaust pipe according to claim 3, characterized in that: one end of the air pipe is welded and fixed with the side wall of the first air inlet pipe or the second air inlet pipe, and the other end of the air pipe is welded and fixed with the air outlet.

5. An explosion-proof diesel engine exhaust pipe according to claim 1, characterized in that: the shell body comprises a front cover plate, a rear cover plate, a left side plate, a right side plate, a top plate and a bottom plate which are fixed through welding, an air inlet is formed in the front cover plate, an air outlet is formed in the top plate uniformly, a water inlet pipe is arranged at the front end of the bottom plate, a water outlet pipe is arranged at the rear end of the right cover plate, and a gas relief valve is arranged at the front end of the left side plate.

6. An explosion-proof diesel engine exhaust pipe according to claim 1, characterized in that: the outer shell is made of a material with a small sensitivity coefficient to cold and hot alternation, and the exhaust pipeline is made of a high-temperature-resistant and corrosion-resistant material.

7. An explosion-proof diesel engine exhaust pipe according to claim 1, characterized in that: the shell body is made of carbon steel.

8. An explosion-proof diesel engine exhaust pipe according to claim 1, characterized in that: the exhaust pipeline is made of stainless steel.