CN214092011U - Exhaust cooling system - Google Patents

Abstract

The utility model relates to the technical field of engine, specifically disclose an exhaust cooling system, this exhaust cooling system includes blast pipe, choke, water tank and draws and penetrate the pipe. The throat is arranged in the exhaust pipe, the tail gas flows through the throat, the aperture of the throat is reduced and then increased along the flow direction of the tail gas, and the tail gas can generate negative pressure when flowing through the throat; the water tank is used for supplying water for the input end of the injection pipe, the output end of the injection pipe is positioned in the exhaust pipe, negative pressure can act on the injection pipe, the injection pipe can absorb water in the water tank and inject the exhaust pipe under the action of the negative pressure, the injected water can be impacted by high-speed tail gas to be smashed into small liquid drops and evenly distributed in tail gas airflow, and then the liquid drops are mixed with the tail gas, so that the temperature of the tail gas can be reduced, and sparks in the tail gas are extinguished. Compared with the prior art, the device does not need to be provided with a water purifying tank and a flame arrester, can ensure smooth exhaust emission, ensures the efficiency of an engine, and can also reduce the whole volume and the production cost.

Description

Exhaust cooling system

Technical Field

The utility model relates to the technical field of engines, especially, relate to an exhaust cooling system.

Background

The exhaust temperature of the turbocharged diesel engine commonly used at the present stage is generally between 400 ℃ and 500 ℃, and the fuel which is not fully combusted in the exhaust process of the diesel engine can be continuously combusted.

However, in some special environments, such as mines, or manufacturing plants where flammable and explosive gases, dusts, and vapors exist, the engines used in such environments cannot emit a spark and even a spark due to the presence of flammable and explosive gases. Therefore, the high-temperature exhaust pipe of the engine used in the environment is subjected to cooling treatment or strictly bound by asbestos. It is conventional practice to cool a purge water tank and a flame arrestor in series in the exhaust line to lower the exhaust temperature and remove sparks from the exhaust, but this tends to increase the exhaust resistance of the engine, thereby reducing the power of the engine.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the utility model provides an exhaust cooling system to solve among the relevant art through connecting cooling purification water tank and spark arrester in series in the exhaust pipe and reduce exhaust temperature and get rid of the spark in the exhaust, lead to the exhaust resistance of engine to increase easily, and then reduce the problem of the power of engine.

The utility model provides an exhaust cooling system, this exhaust cooling system includes:

an exhaust pipe;

the throat is arranged in the exhaust pipe, tail gas flows through the throat, the aperture of the throat is reduced and then increased along the flow direction of the tail gas, and the tail gas can generate negative pressure when flowing through the throat;

a water tank;

the water tank is used for supplying water to the input end of the injection pipe, the output end of the injection pipe is positioned in the exhaust pipe, and negative pressure can act on the injection pipe.

As a preferred technical scheme of the exhaust cooling system, the exhaust pipe comprises a straight pipe section and a bent pipe section which are connected with each other, the straight pipe section is located in front of the bent pipe section (11) along the flow direction of the tail gas, and the throat pipe is arranged on the straight pipe section.

As a preferred technical scheme of the exhaust cooling system, the throat pipe comprises a first section, a second section and a third section which are sequentially connected along the flow direction of the tail gas, wherein the first section is in a horn shape, the second section is in a barrel shape, and the third section is in a conical barrel shape.

As a preferred technical scheme of the exhaust cooling system, the output end of the injection pipe is inserted into the second section.

As a preferable technical scheme of the exhaust cooling system, the third section comprises an inlet connected with the second section and an outlet communicated with the exhaust pipe, and the aperture of the outlet is equal to the inner diameter of the exhaust pipe.

As the preferable technical scheme of the exhaust cooling system, the exhaust cooling system further comprises a silencer, wherein the silencer is connected with the exhaust pipe and is positioned in front of the throat pipe along the flow direction of the tail gas.

As a preferred technical scheme of the exhaust cooling system, the exhaust cooling system further comprises a hose, and the hose is connected with the water tank and the input end of the injection pipe.

As a preferred technical scheme of the exhaust cooling system, the exhaust cooling system further comprises a control valve arranged on the hose, and the control valve is used for controlling the opening degree of the hose.

As the preferable technical scheme of the exhaust cooling system, the exhaust cooling system also comprises a water level sensor arranged on the water tank.

As a preferred technical scheme of the exhaust cooling system, the plane of the output end of the injection pipe is not lower than the liquid level in the water tank.

The utility model has the advantages that:

the utility model provides an exhaust cooling system, this exhaust cooling system include blast pipe, choke, water tank and draw and penetrate the pipe. The throat is arranged in the exhaust pipe, the tail gas flows through the throat, the aperture of the throat is reduced and then increased along the flow direction of the tail gas, and the tail gas can generate negative pressure when flowing through the throat; the water tank is used for supplying water for the input end of the injection pipe, the output end of the injection pipe is positioned in the exhaust pipe, the negative pressure can act on the injection pipe, the injection pipe can absorb water in the water tank and inject the exhaust pipe under the action of the negative pressure, the injected water can be impacted by high-speed tail gas to be smashed into small liquid drops and evenly distributed in the tail gas flow, and then the liquid drops are mixed with the tail gas, so that the temperature of the tail gas can be reduced, and sparks in the tail gas are extinguished. Compared with the prior art, the device does not need to be provided with a water purifying tank and a flame arrester, can ensure smooth exhaust emission, ensures the efficiency of an engine, and can also reduce the whole volume and the production cost.

Drawings

Fig. 1 is a schematic structural diagram of an exhaust cooling system in an embodiment of the present invention.

In the figure:

1. an exhaust pipe; 11. bending the pipe section; 12. a straight pipe section;

2. a throat; 21. a first stage; 22. a second stage; 23. a third stage;

3. a water tank;

4. an injection pipe;

5. a hose;

6. a control valve;

7. a water level sensor.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1, the present embodiment provides an exhaust cooling system, which can be applied to a diesel engine and a loader. The exhaust cooling system comprises an exhaust pipe 1, a throat pipe 2, a water tank 3 and an injection pipe 4. The throat 2 is arranged in the exhaust pipe 1, the tail gas flows through the throat 2, the aperture of the throat 2 is reduced and then increased along the flow direction of the tail gas, and the tail gas flowing through the throat 2 can generate negative pressure; the water tank 3 is used for supplying water to the input end of the injection pipe 4, the output end of the injection pipe 4 is positioned in the exhaust pipe 1, and negative pressure can act on the injection pipe 4. The exhaust cooling system that this embodiment provided can produce the negative pressure when diesel engine exhaust tail gas passes through choke 2, draws the effect of negative pressure to penetrate the water in the pipe 4 adsorbable water tank 3 and jets out, and the water that jets out can be smashed into little liquid drop and equipartition in the tail gas air current by the high-speed tail gas impact, and then liquid drop and tail gas mix, can reduce the tail gas temperature to extinguish the spark in the tail gas. Compared with the prior art, the device does not need to be provided with a water purifying tank and a flame arrester, can ensure smooth exhaust emission, ensures the efficiency of an engine, and can also reduce the whole volume and the production cost.

Alternatively, the exhaust pipe 1 includes a straight pipe section 12 and a bent pipe section 11 connected to each other, and the straight pipe section 12 is located in front of the bent pipe section 11 in the flow direction of the exhaust gas, and the throat pipe 2 is disposed at the straight pipe section 12.

Optionally, the throat 2 includes a first section 21, a second section 22 and a third section 23 connected in sequence along the flow direction of the exhaust gas, wherein the first section 21 is in a horn shape, the second section 22 is in a barrel shape, and the third section 23 is in a tapered barrel shape. Specifically, the aperture of the first section 21 is gradually reduced to be equal to that of the second section 22, the minimum aperture of the third section 23 is equal to that of the second section 22, and the aperture of the third section 23 is gradually increased. When the exhaust gas flows through the throat 2, a greater negative pressure will be created in the second section 22. Preferably, the third section 23 comprises an inlet connected to the second section 22 and an outlet communicating with the exhaust pipe 1, the diameter of the outlet being equal to the internal diameter of the exhaust pipe 1. Further preferably, the output end of the ejector tube 4 is inserted into the second section 22. This ensures that a greater suction is created to the water in the tank 3.

Optionally, the exhaust cooling system further comprises a silencer, the silencer is connected with the exhaust pipe 1, and along the flow direction of the exhaust gas, the silencer is located in front of the throat pipe 2. By arranging the silencer, the exhaust noise can be reduced.

Optionally, the device further comprises a hose 5, and the hose 5 is connected with the water tank 3 and the input end of the injection pipe 4. By providing the hose 5, the position of the water tank 3 is easily arranged. Preferably, the exhaust cooling system further comprises a control valve 6 disposed on the hose 5, and the control valve 6 is used for controlling the opening degree of the hose 5. The amount of water entering the exhaust pipe 1 can be controlled by providing a control valve 6.

Optionally, the exhaust cooling system further comprises a water level sensor 7 disposed in the water tank 3. The water level in the water tank 3 can be monitored through the water level sensor 7, the water level sensor 7 is connected with the controller, and when the water level is reduced to a set value, the controller can send out an alarm through an alarm device, such as a tricolor lamp, a sound box or a display screen.

Optionally, the plane of the output end of the ejector pipe 4 is not lower than the liquid level in the water tank 3. So set up, can avoid the water in the water tank 3 to be sucked by the back.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. An exhaust gas cooling system, comprising:

an exhaust pipe (1);

the throat (2) is arranged in the exhaust pipe (1), tail gas flows through the throat (2), the aperture of the throat (2) is reduced and then increased along the flow direction of the tail gas, and the tail gas flowing through the throat (2) can generate negative pressure;

a water tank (3);

the water tank (3) is used for supplying water to the input end of the injection pipe (4), the output end of the injection pipe (4) is located in the exhaust pipe (1), and negative pressure can act on the injection pipe (4).

2. An exhaust gas cooling system according to claim 1, characterized in that the exhaust pipe (1) comprises a straight pipe section (12) and a bent pipe section (11) connected to each other, and in the flow direction of the exhaust gas, the straight pipe section (12) is located in front of the bent pipe section (11), and the throat pipe (2) is arranged at the straight pipe section (12).

3. The exhaust cooling system according to claim 1, wherein the throat (2) comprises a first section (21), a second section (22) and a third section (23) which are sequentially connected along the flow direction of the exhaust gas, wherein the first section (21) is in a horn shape, the second section (22) is in a barrel shape, and the third section (23) is in a tapered barrel shape.

4. Exhaust cooling system according to claim 3, characterized in that the outlet end of the ejector tube (4) is inserted into the second section (22).

5. An exhaust cooling system according to claim 4, characterized in that the third section (23) comprises an inlet connected to the second section (22) and an outlet communicating with the exhaust pipe (1), the diameter of the outlet being equal to the internal diameter of the exhaust pipe (1).

6. The exhaust gas cooling system according to claim 1, further comprising a muffler connected to the exhaust pipe (1) and located in front of the throat (2) in a flow direction of the exhaust gas.

7. The exhaust cooling system according to claim 1, further comprising a hose (5), wherein the hose (5) connects the water tank (3) and the input end of the ejector pipe (4).

8. The exhaust gas cooling system according to claim 7, further comprising a control valve (6) disposed on the hose (5), wherein the control valve (6) is used for controlling the opening degree of the hose (5).

9. Exhaust cooling system according to any of claims 1-8, further comprising a water level sensor (7) arranged at the water tank (3).

10. The exhaust cooling system according to any one of claims 1 to 8, wherein the plane of the output end of the ejector pipe (4) is not lower than the liquid level in the water tank (3).

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