CN217002026U

CN217002026U - Explosion-proof diesel engine exhaust apparatus

Info

Publication number: CN217002026U
Application number: CN202220083178.7U
Authority: CN
Inventors: 葛森; 彭志成
Original assignee: Hubei Daxinkang Mining Equipment Co ltd
Current assignee: Hubei Daxinkang Mining Equipment Co ltd
Priority date: 2022-01-13
Filing date: 2022-01-13
Publication date: 2022-07-19
Anticipated expiration: 2032-01-13

Abstract

The utility model provides an explosion-proof diesel engine exhaust device, which is characterized in that double exhaust cavities are arranged, and exhaust ports of engine cylinders are communicated with two exhaust cavities in a crossed manner according to an ignition sequence, so that the amount of tail gas exhausted by a single exhaust cavity in unit time can be reduced, the internal pressure is reduced, the exhaust efficiency is improved, and meanwhile, the exhaust energy can be increased to supply energy to a turbocharger; the two exhaust pipe structures are made of a hollow square pipe, are conveniently and quickly connected with the exhaust joint and are convenient to install and manufacture quickly; injecting circulating cooling liquid into the cavity in the shell outside the exhaust pipe to cool the exhaust pipe and reduce the temperature of tail gas; and the cooling fins are arranged to radiate the cooling liquid and reduce the temperature of the tail gas.

Description

Explosion-proof diesel engine exhaust apparatus

Technical Field

The utility model relates to the field of explosion-proof diesel engines, in particular to an exhaust device of an explosion-proof diesel engine.

Background

The engines used in explosion-proof diesel engines generally comprise a plurality of cylinders, and in the case of an in-line six-cylinder engine, the ignition sequence is generally: 1-5-3-6-2-4 or 1-4-2-6-3-5, and the exhaust sequence is the same as the ignition sequence.

In the existing explosion-proof diesel engine, tail gas exhausted by an engine cylinder enters a turbocharger to drive the turbocharger to do work. When the exhaust gas discharged from the plurality of engine cylinders sequentially and continuously enters the turbocharger, the exhaust gas discharged from the turbocharger is not accumulated in the exhaust cavity to form internal pressure, and the exhaust efficiency of the engine cylinders is affected.

Considering the characteristic of sequential exhaust of the engine cylinders, two exhaust cavities can be considered, a plurality of engine cylinders are arranged according to the ignition sequence, and the two exhaust cavities are connected in turn according to the sequence, so that the exhaust quantity of a single exhaust cavity discharged in unit time can be reduced, the internal pressure is reduced, and the exhaust efficiency is improved.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an exhaust device of an explosion-proof diesel engine, which can improve the exhaust efficiency.

The technical scheme of the utility model is realized as follows: the utility model provides an explosion-proof diesel engine exhaust device which comprises N engine cylinders, an exhaust manifold and a turbocharger, wherein N is more than or equal to 2, the N engine cylinders are numbered as 1# and 2# … N # in sequence according to an ignition sequence, the exhaust manifold comprises a first exhaust cavity and a second exhaust cavity, the engine cylinders with odd numbers are respectively communicated with the first exhaust cavity, the engine cylinders with even numbers are respectively communicated with the second exhaust cavity, and the first exhaust cavity and the second exhaust cavity are respectively communicated with the turbocharger.

On the basis of the above technical scheme, preferably, the exhaust manifold includes a housing, an exhaust joint and two exhaust pipes, N air inlets are respectively disposed on the housing, the two exhaust pipes are respectively disposed in the housing, and hollow portions of the two exhaust pipes are respectively a first exhaust chamber and a second exhaust chamber, a portion of the air inlets are communicated with the exhaust pipe corresponding to the first exhaust chamber, the other air inlets are communicated with the exhaust pipe corresponding to the second exhaust chamber, the exhaust joint is fixed on the housing and is respectively communicated with the two exhaust pipes, and the exhaust joint is communicated with the turbocharger.

Preferably, the two exhaust pipes are made of a hollow square pipe, an opening is formed in the middle of the hollow square pipe, the exhaust joint comprises a pipe wall and a splitter plate, the pipe wall is fixed on the shell, one end of the pipe wall is communicated with the outside, the other end of the pipe wall is communicated with the opening in the middle of the hollow square pipe, the splitter plate is longitudinally fixed in the pipe wall and divides the pipe wall into a left flow channel and a right flow channel, the splitter plate is inserted into the hollow square pipe and divides the pipe wall into the left exhaust pipe and the right exhaust pipe, the left exhaust pipe is communicated with the left flow channel in the pipe wall, and the right exhaust pipe is communicated with the right flow channel in the pipe wall.

Still further preferably, the longitudinal section of the splitter plate is in a shape of Chinese character 'ren'.

Further preferably, the exhaust manifold further comprises a plurality of guide pipes, the guide pipes penetrate through the shell and are fixed with the shell, and the fastening piece penetrates through the guide pipes to be fastened and connected with the shell and the engine.

Further preferably, the circulating cooling liquid is injected into the cavity between the interior of the shell and the exhaust joint and the two exhaust pipes.

Preferably, the housing is provided with a coolant inlet and a coolant outlet, and the coolant inlet and the coolant outlet are respectively communicated with the housing and externally communicated with the pump and the coolant radiator.

Still further preferably, the housing is provided with an evacuation port, and the evacuation port is communicated with the housing.

Further preferably, the heat dissipation device further comprises heat dissipation fins, and the heat dissipation fins are fixed on the outer side face of the shell.

Compared with the prior art, the explosion-proof diesel engine exhaust device has the following beneficial effects:

(1) by arranging the double exhaust cavities and communicating the exhaust ports of the engine cylinder with the two exhaust cavities in a crossed manner according to the ignition sequence, the exhaust amount of the tail gas exhausted by a single exhaust cavity in unit time can be reduced, the internal pressure is reduced, the exhaust efficiency is improved, and meanwhile, the exhaust energy can be increased to supply energy to the turbocharger;

(2) the two air exhaust pipe structures share one hollow square pipe, and the air exhaust pipe structure is conveniently and quickly connected with an air exhaust connector and is convenient to install and manufacture quickly;

(3) injecting circulating cooling liquid into the cavity in the shell outside the exhaust pipe to cool the exhaust pipe and reduce the temperature of tail gas;

(4) and the cooling fins are arranged to radiate the cooling liquid and reduce the temperature of the tail gas.

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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a perspective view of an exhaust device for an explosion-proof diesel engine of the present invention;

FIG. 2 is a perspective view of the explosion proof diesel exhaust apparatus of the present invention;

FIG. 3 is a perspective view of the exhaust device of the explosion-proof diesel engine of the present invention with the sealing plate of the air inlet removed;

FIG. 4 is a bottom view of the exhaust apparatus of the explosion-proof diesel engine of the present invention;

FIG. 5 is a front view of the explosion proof diesel exhaust of the present invention;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;

fig. 7 is an exploded view of the exhaust fitting and exhaust pipe portion of the exhaust apparatus of the explosion-proof diesel engine of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

As shown in fig. 1 to 7, the exhaust device of the explosion-proof diesel engine of the present invention comprises N engine cylinders, an exhaust manifold 1 and a turbocharger, wherein N is greater than or equal to 2, and if the engine is a four-cylinder engine, N is 4; if the engine is a six-cylinder engine, N is 6. The N engine cylinders are numbered 1#, 2# … N # in sequence according to the ignition sequence. For example, for a six cylinder engine, the numbers are 1#, 2#, 3#, 4#, 5# and 6# in that order.

The exhaust manifold 1 is used for communicating engine cylinders with a turbocharger and comprises a first exhaust cavity 101 and a second exhaust cavity 102, the odd-numbered engine cylinders are communicated with the first exhaust cavity 101 respectively, the even-numbered engine cylinders are communicated with the second exhaust cavity 102 respectively, and the first exhaust cavity 101 and the second exhaust cavity 102 are communicated with the turbocharger respectively. Therefore, in the process of alternately exhausting in each cylinder of the engine, tail gas alternately enters the first exhaust cavity 101 and the second exhaust cavity 102, the amount of the tail gas exhausted in unit time of a single exhaust cavity is reduced, the tail gas is prevented from entering the turbocharger to form internal pressure, and the exhaust efficiency is improved; in addition, the exhaust mode can also increase the energy of exhaust gas to supply energy to the turbocharger.

Specifically, the exhaust manifold 1 includes a housing 11, an exhaust joint 12, two exhaust pipes 13, a plurality of guide pipes 14, and heat dissipation fins 15.

And a cavity filled with cooling liquid is formed between the shell 11 and the exhaust pipe 13, and fixed support is provided. The housing 11 is provided with N air inlets 103 respectively, and the N air inlets are correspondingly connected with N engine cylinders respectively.

The two exhaust pipes 13 are respectively arranged in the housing 11, and the hollow parts of the two exhaust pipes are a first exhaust cavity 101 and a second exhaust cavity 102, wherein part of the air inlets 103 are communicated with the exhaust pipe 13 corresponding to the first exhaust cavity 101, and the rest of the air inlets 103 are communicated with the exhaust pipe 13 corresponding to the second exhaust cavity 102. Specifically, the odd-numbered engine cylinders are respectively communicated with the air inlet 103 corresponding to the first exhaust chamber 101, and the even-numbered engine cylinders are respectively communicated with the air inlet 103 corresponding to the second exhaust chamber 102.

The exhaust joint 12 is fixed on the housing 11 and is respectively communicated with the two exhaust pipes 13, and the exhaust joint 12 is communicated with the turbocharger.

The exhaust joint 12 and the exhaust pipe 13 need to be able to withstand the high temperature of the exhaust gas, and are generally made of metal pipe fittings, and this embodiment provides a structure of the exhaust pipe 13 and the exhaust joint 12 that is efficient and low-cost. Specifically, the two exhaust pipes 13 are made of a hollow square pipe, an opening is formed in the middle of the hollow square pipe, the exhaust joint 12 includes a pipe wall 121 and a flow distribution plate 122, the pipe wall 121 is fixed on the casing 11, one end of the pipe wall 121 is communicated with the outside, the other end of the pipe wall 121 is communicated with the opening in the middle of the hollow square pipe, the flow distribution plate 122 is longitudinally fixed in the pipe wall 121 and divides the pipe wall 121 into a left flow channel and a right flow channel, the flow distribution plate 122 is inserted into the hollow square pipe and divides the pipe wall 122 into the left exhaust pipe and the right exhaust pipe 13, the left exhaust pipe 13 is communicated with the left flow channel in the pipe wall 121, and the right exhaust pipe 13 is communicated with the right flow channel in the pipe wall 121. Specifically, the structure can adopt a square steel pipe, the two sides of the steel pipe are sealed, the middle of the steel pipe is opened, and the bottom of the steel pipe is provided with a plurality of openings connected with the air inlet 103; in addition, a steel plate is selected to be welded end to form a pipe wall 121, the pipe wall 121 is welded with the middle opening of the square steel pipe, and then the flow distribution plate 122 is inserted into the pipe wall 121 and is welded and fixed with the pipe wall 121 and the square steel pipe. Specifically, the longitudinal section of the splitter plate 122 is in a shape of a Chinese character 'ren'.

The guide pipes 14 are used for fixing the shell 11, a plurality of guide pipes 14 penetrate through the shell 11 and are fixed with the shell, and fasteners penetrate through the guide pipes 14 to fixedly connect the shell 11 with the engine. Specifically, a guide tube 14 is provided for a rod-like fastener to pass through and be fixed to the engine.

In order to cool the exhaust joint 12 and the exhaust pipe 13 with high temperature, circulating cooling liquid is injected into a cavity between the interior of the shell 11 and the exhaust joint 12 and the exhaust pipe 13. Specifically, a cooling liquid inlet 104 and a cooling liquid outlet 105 are formed in the housing 11, and the cooling liquid inlet 104 and the cooling liquid outlet 105 are respectively communicated with the housing 11 and externally communicated with the pump and the cooling liquid radiator. In this way, the pump drives the cooling liquid to circularly dissipate heat. The cooling liquid is generally water. Because the cavity for filling the cooling liquid is a sealed cavity, air needs to be removed in the process of filling the cooling liquid, and therefore, the housing 11 is provided with the evacuation port 106, and the evacuation port 106 is communicated with the housing 11. Of course, the drain 106 can also serve as a coolant vapor drain.

The cooling liquid will gradually generate heat and even boil even in a long-term working state, and in order to improve the heat dissipation capability, the heat dissipation fins 15 are provided and fixed on the outer side surface of the housing 11.

The working principle of the utility model is explained below:

during the process of alternately exhausting in each cylinder of the engine, the exhaust gas alternately enters the first exhaust cavity 101 and the second exhaust cavity 102, and then respectively enters the turbocharger. Therefore, the exhaust gas volume exhausted in unit time of a single exhaust cavity is reduced, the exhaust gas is prevented from entering the turbocharger to form internal pressure, and the exhaust efficiency is improved.

In the process that the high temperature of the tail gas passes through the exhaust joint 12 and the exhaust pipe 13, circulating cooling water is continuously injected into a cooling liquid cavity in the shell 11 through a water pump to cool the tail gas; meanwhile, the housing 11 is heat-radiated by the heat radiation fins 15.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides an explosion-proof diesel engine exhaust apparatus, its includes N engine cylinder, exhaust manifold (1) and turbo charger, wherein, N is greater than or equal to 2, according to the ignition sequence, N engine cylinder numbers in proper order is 1#, 2# … N #, its characterized in that: the exhaust manifold (1) comprises a first exhaust cavity (101) and a second exhaust cavity (102), the odd-numbered engine cylinders are respectively communicated with the first exhaust cavity (101), the even-numbered engine cylinders are respectively communicated with the second exhaust cavity (102), and the first exhaust cavity (101) and the second exhaust cavity (102) are respectively communicated with the turbocharger.

2. An explosion proof diesel exhaust as set forth in claim 1 wherein: the exhaust manifold (1) comprises a shell (11), exhaust connectors (12) and two exhaust pipes (13), wherein N air inlets (103) are formed in the shell (11) respectively, the two exhaust pipes (13) are arranged in the shell (11) respectively, the hollow parts of the two exhaust pipes are a first exhaust cavity (101) and a second exhaust cavity (102), part of the air inlets (103) are communicated with the exhaust pipes (13) corresponding to the first exhaust cavity (101), the rest of the air inlets (103) are communicated with the exhaust pipes (13) corresponding to the second exhaust cavity (102), the exhaust connectors (12) are fixed on the shell (11) and are communicated with the two exhaust pipes (13) respectively, and the exhaust connectors (12) are communicated with a turbocharger.

3. An explosion proof diesel exhaust as set forth in claim 2 wherein: two blast pipes (13) are made by a cavity side pipe, the centre is provided with the opening, exhaust joint (12) are including pipe wall (121) and flow distribution plate (122), pipe wall (121) are fixed on casing (11), pipe wall (121) one end communicates the other end with the external world and communicates with cavity side pipe middle opening, flow distribution plate (122) longitudinal fixation is in pipe wall (121) and cut apart into two runners about it, flow distribution plate (122) insert in the cavity side pipe and cut apart into two blast pipes (13) about it, left side blast pipe (13) intercommunication pipe wall (121) the left side runner, right side blast pipe (13) intercommunication pipe wall (121) the right side runner in.

4. An explosion proof diesel exhaust as set forth in claim 3 wherein: the longitudinal section of the splitter plate (122) is in a herringbone shape.

5. An explosion proof diesel exhaust as set forth in claim 2 wherein: the exhaust manifold (1) further comprises a plurality of guide pipes (14), the guide pipes (14) penetrate through the shell (11) and are fixed with the shell, and fasteners penetrate through the guide pipes (14) to be fixedly connected with the shell (11) and the engine.

6. An explosion proof diesel exhaust as set forth in claim 2 wherein: and circulating cooling liquid is injected into a cavity between the interior of the shell (11) and the exhaust joint (12) and the exhaust pipe (13).

7. An explosion proof diesel exhaust as set forth in claim 6 wherein: and the shell (11) is provided with a cooling liquid inlet (104) and a cooling liquid outlet (105), and the cooling liquid inlet (104) and the cooling liquid outlet (105) are respectively communicated with the shell (11) and externally communicated with the pump and the cooling liquid radiator.

8. An explosion proof diesel exhaust as set forth in claim 7 wherein: the shell (11) is provided with a vent (106), and the vent (106) is communicated with the shell (11).

9. An explosion proof diesel exhaust as set forth in claim 6 wherein: still include radiating fin (15), radiating fin (15) are fixed on casing (11) lateral surface.