Water-air intercooling fire-retardant air inlet system

Abstract

The utility model discloses a water-air intercooling fire-retardant air inlet system, which belongs to the technical field of vehicle engines, and comprises an air inlet communicating pipe, an air inlet fire-retardant gate and an intercooler which are connected in sequence, the air inlet communicating pipe is used for being connected with an air inlet main pipe, and the intercooler is used for being connected with an air inlet pipe of an air cylinder; the air inlet fire-retardant grid is arranged between the air outlet of the air inlet communicating pipe and the air inlet of the intercooler, the air inlet fire-retardant grid is in a long-strip rectangular plate shape, and the air inlet of the intercooler is a rectangular opening matched with the air inlet fire-retardant grid. The anti-explosion device has the advantages of being simple in structure, small in size and good in anti-explosion performance, flame in an air cylinder can be prevented from returning to the air inlet communicating pipe and entering the atmosphere by installing and fixing the air inlet fire-retardant grid between the air inlet communicating pipe and the intercooler, and inflammable gas in the working environment is prevented from being ignited; meanwhile, the internal space can be reasonably utilized, so that the overall structure is more compact; the air inlet temperature is reduced through the intercooler, and the performance of the engine is optimized.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle engines, and particularly relates to a water air intercooling flame-retarding air intake system. Background Art

[0002] The air intake system of an engine is arranged at the inlet of the cylinder, and its main function is to supply sufficient and stable air to the engine to meet the requirements of the engine. The existing air intake systems of diesel engines do not install explosion-proof facilities. If the vehicle enters an environment where combustible gases are diffused in the air, the flame in the cylinder may return to the atmosphere along the air intake system, which is extremely likely to cause an explosion and even result in a tragedy of vehicle destruction and human death. Therefore, in order to improve the safety performance of the engine, it is necessary to develop a new type of air intake system to improve the explosion-proof performance of the engine. Content of the Utility Model

[0003] In order to solve the above problems, the utility model provides a water air intercooling flame-retarding air intake system.

[0004] To achieve the above object, the technical solutions adopted by the utility model are as follows:

[0005] A water air intercooling flame-retarding air intake system includes an air intake connecting pipe, an air intake flame-retarding grid and an intercooler which are connected in sequence. The air intake connecting pipe is used to be connected with the air intake main pipe, and the intercooler is used to be connected with the air inlet pipe of the cylinder; the air intake flame-retarding grid is arranged between the air outlet of the air intake connecting pipe and the air inlet of the intercooler. The air intake flame-retarding grid is in the shape of a long rectangular plate, and the air inlet of the intercooler is a rectangular opening matching the air intake flame-retarding grid.

[0006] Further, the air intake connecting pipe includes a mounting plate and two air intake channels. The edge of the mounting plate can be connected with the periphery of the air intake flame-retarding grid; the air inlets of the two air intake channels are respectively arranged at the lower parts of both ends of the mounting plate. The middle part of the air intake channel has a bend, and the inlet and outlet are arranged staggeredly. The air outlets of the two air intake channels are close to the middle part of the mounting plate and are arranged at intervals; the sizes of the air outlets of the two air intake channels are larger than those of their air inlets.

[0007] Further, the air inlet of the air intake channel is rectangular, and a flange for connecting with the air intake main pipe is arranged around the air inlet of the air intake channel.

[0008] Further, the surface roughness of the air intake end and the air outlet end of the air intake connecting pipe is 3.2.

[0009] Further, flanging capable of wrapping the air intake flame-retarding grid is arranged on both sides and the bottom of the mounting plate. Removable guard plates are arranged around the air intake flame-retarding grid, and the periphery of the mounting plate is connected with the side edges around the intercooler through extended bolts.

[0010] Further, a handle is provided at the top of the intake flame arrester grid, and a long groove for the handle to pass through is provided on the front side of the guard plate at the top of the intake flame arrester grid.

[0011] Further, the intercooler is a water-air intercooler.

[0012] Further, a rectangular intake port matching the intake flame arrester grid is provided on the front side of the box body of the water-air intercooler. Two air outlet pipes are symmetrically provided on the rear side of the box body of the water-air intercooler, and the outlets of the two air outlet pipes are horizontally oriented towards both sides of the box body. The water inlets and outlets are symmetrically provided on the left and right sides of the box body of the water-air intercooler, and the openings of the water inlets and outlets are all oriented downward of the box body.

[0013] Compared with the prior art, the technical progress achieved by the present utility model is as follows:

[0014] By installing and fixing the intake flame arrester grid between the intake connecting pipe and the intercooler, the present utility model can prevent the flame in the cylinder from returning to the intake connecting pipe and entering the atmosphere, and avoid igniting the flammable gas in the working environment. At the same time, the intercooler is used to reduce the intake air temperature, increase the intake air volume and the power of the engine. The present utility model has the advantages of simple structure, small volume and good explosion-proof performance. By fixing the intake flame arrester grid between the intake connecting pipe and the water-air intercooler, the internal space can be reasonably utilized, the overall structure is made more compact, and the structure and performance of the engine are optimized. Description of the Drawings

[0015] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model, and do not constitute a limitation to the present utility model.

[0016] In the drawings:

[0017] Figure 1 is a schematic structural diagram of a water-air intercooled flame arrester intake system provided by an embodiment of the present utility model;

[0018] Figure 2 is Figure 1 a schematic structural diagram of the intake connecting pipe;

[0019] Figure 3 is Figure 3 a top view of the intake connecting pipe;

[0020] Figure 4 is Figure 3 a right view of the intake connecting pipe;

[0021] Figure 5 is Figure 3 a front view of the intake connecting pipe.

[0022] In the figure:

[0023] 1 - Intake connecting pipe, 10 - Hem, 11 - Mounting plate, 12 - Intake passage; 2 - Intake flame arrester grid; 3 - Intercooler, 30 - Box body, 31 - Outlet pipe, 32 - Inlet and outlet water port; 4 - Guard plate; 5 - Handle; 6 - Flange. Detailed implementation manners

[0024] The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of the present invention will be described below with reference to the accompanying drawings.

[0025] As Figure 1 shown, a water-air intercooled flame arrester intake system includes an intake connecting pipe 1, an intake flame arrester grid 2 and an intercooler 3 connected in sequence. The intake connecting pipe 1 can be connected to an intake main pipe (not shown in the figure), and the intercooler 3 is used to be connected to an intake pipe of a cylinder (not shown in the figure); the intake flame arrester grid 2 is arranged between the outlet of the intake connecting pipe 1 and the inlet of the intercooler 3. The intake flame arrester grid 2 is in the shape of a long rectangular plate, and the inlet of the intercooler 3 is a rectangular opening that matches the intake flame arrester grid 2. By installing the intake flame arrester grid, it can prevent the flame that may return in the diesel engine cylinder from directly leading to the atmosphere, and the flame will go out when passing through, thereby avoiding igniting the flammable gas in the working environment. By the intake flame arrester grid, the explosion-proof performance of the engine can be improved, and at the same time, the intercooler is used to reduce the intake air temperature, reduce the heat load of the engine, increase the intake air volume, and thus increase the power of the engine.

[0026] In a specific embodiment of the present invention, as Figure 2 shown, the intake connecting pipe 1 includes a mounting plate 11 and two intake passages 12. The edge of the mounting plate 11 can be connected to the periphery of the intake flame arrester grid 2; the inlets of the two intake passages 12 are respectively arranged at the lower parts of both ends of the mounting plate 11. The middle of the intake passage 12 has a bend, and the inlets and outlets are arranged staggeredly. The outlets of the two intake passages 12 are close to the middle of the mounting plate 11 and are arranged at intervals; the outlet size of the two intake passages 12 is larger than their inlet size, which can increase the contact area between the air flow and the flame arrester grid. With the intake passage of the above structure, the air flow can enter in an S shape, which can extend the path of the air flow, reduce the intake resistance, and optimize the performance of the engine.

[0027] During specific design, as Figures 2 - 4 shown, the inlet of the intake passage 12 is rectangular, and a flange 6 connected to the intake main pipe is provided around the inlet of the intake passage 12. Flange connection is convenient for loading, unloading and maintenance. At the same time, the structures of the intake passages at both ends and the height of the inlets can be designed according to the actual installation position, and are not limited to the same structure and / or the same height.

[0028] During specific manufacturing, the surface roughness of the intake connection pipe 1 at its intake end and outlet end is 3.2, as Figure 5 shown. This structure facilitates the installation of gaskets at the intake end and outlet end, ensuring the sealing performance of the intake system.

[0029] In a specific embodiment of the present invention, as Figure 1 , Figure 2 and Figure 5 shown, the two sides and the bottom of the mounting plate 11 are provided with flanges 10 that can wrap the intake flame arrester grid 2. Removable guard plates 4 are provided around the intake flame arrester grid 2. The four sides of the mounting plate 11 are connected to the four side edges of the intercooler 3 through extended bolts (not shown in the figure). Using the flanges to wrap around the intake flame arrester grid and clamping and fixing the intake flame arrester grid between the intake connection pipe and the intercooler with extended bolts can improve the firmness of the intake system. During long-term operation, impurities will accumulate in the intake flame arrester grid. The intake flame arrester grid can be cleaned by removing the guard plates and reinstalled after cleaning for recycling.

[0030] To facilitate the loading and unloading of the intake flame arrester grid, a handle 5 is installed at the top of the intake flame arrester grid 2. A long groove for the handle 5 to pass through is provided in the front side of the guard plate 4 at the top of the intake flame arrester grid 2, facilitating the handling of the handle to load and unload the flame arrester grid.

[0031] In several embodiments of the present invention, as Figure 1 shown, the intercooler 3 is a water-air intercooler. Among them, a rectangular intake port matching the intake flame arrester grid 2 is provided on the front side of the box body 30 of the water-air intercooler. Two outlet pipes 31 are symmetrically provided on the rear side of the box body of the water-air intercooler, and the outlets of the two outlet pipes 31 are horizontally directed towards the left and right sides of the box body; water inlet and outlet ports 32 are symmetrically provided on the left and right sides of the box body 30 of the water-air intercooler, and the openings of the water inlet and outlet ports 32 are all directed towards the lower part of the box body 30. The water-air intercooler with this structure can make rational use of space, making the overall intake system more compact. The intake temperature can be reduced through the water-air intercooler, the intake air volume can be increased, and the performance of the engine can be optimized.

[0032] In summary, the present invention has the advantages of simple structure, small volume, and good explosion-proof performance. By clamping and fixing the intake flame arrester grid between the intake connection pipe and the water-air intercooler, while being more compact as a whole, it can prevent the flame in the engine cylinder from returning to the intake passage, improving the explosion-proof performance and optimizing the structure and performance of the engine.

[0033] Finally, it should be noted that the above are only preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the scope of protection of the claims of the present utility model.

Claims

1. An air intake system with water-air intercooling and fire resistance, characterized in that: It includes an intake connecting pipe, an intake flame arrester grid, and an intercooler that are connected in sequence. The intake connecting pipe is used to be connected to the intake main pipe, and the intercooler is used to be connected to the intake pipe of the cylinder. The intake flame arrester grid is arranged between the outlet of the intake connecting pipe and the inlet of the intercooler. The intake flame arrester grid is in the shape of a long rectangular plate, and the inlet of the intercooler is a rectangular opening that matches the intake flame arrester grid.

2. The water-air intercooling and flame-retarding air intake system according to claim 1, wherein: The intake connecting pipe includes a mounting plate and two intake channels. The edge of the mounting plate can be connected to the periphery of the intake flame arrester grid. The inlets of the two intake channels are respectively arranged at the lower parts of both ends of the mounting plate. The middle part of the intake channel has a bend, and the inlet and outlet are arranged staggeredly. The outlets of the two intake channels are close to the middle of the mounting plate and are spaced apart. The size of the outlets of the two intake channels is larger than the size of their inlets.

3. The water-air intercooling and fire-resistant air intake system according to claim 2, characterized in that: The inlet of the intake channel is rectangular, and a flange connected to the intake main pipe is provided around the inlet of the intake channel.

4. The water-air intercooling and fire-blocking air intake system according to claim 3, wherein: The surface roughness of the intake end and the outlet end of the intake connecting pipe is 3.

2.

5. The water-air intercooled fire-resistant air intake system according to claim 2, characterized in that: Flanges capable of wrapping the intake flame arrester grid are provided on both sides and the bottom of the mounting plate. Removable guard plates are provided around the intake flame arrester grid. The periphery of the mounting plate is connected to the side edges around the intercooler through extended bolts.

6. The water-air intercooling fire-resistant air intake system according to claim 5, wherein: A handle is provided at the top of the intake flame arrester grid, and a long groove for the handle to pass through is provided on the front side of the guard plate at the top of the intake flame arrester grid.

7. A water-air intercooling and fire-blocking air intake system according to any one of claims 1-6, characterized in that: The intercooler is a water-air intercooler.

8. The water-air intercooling fire-resistant air intake system according to claim 7, characterized in that: A rectangular intake opening matching the intake flame arrester grid is provided on the front side of the box body of the water-air intercooler. Two outlet pipes are symmetrically provided on the rear side of the box body of the water-air intercooler, and the outlets of the two outlet pipes are horizontally oriented towards both sides of the box body. Water inlet and outlet openings are symmetrically provided on the left and right sides of the box body of the water-air intercooler, and the openings of the water inlet and outlet openings are all oriented downward of the box body.

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