Horizontal air intake filter system

Abstract

The application aims to provide a horizontal air intake filtering system, comprising a shell, a horizontal gravity waterproof device, a sampling bottle and an air pump, the horizontal gravity waterproof device is installed in the shell, a heating layer is arranged below the horizontal gravity waterproof device, a sampling layer is arranged above the horizontal gravity waterproof device, a cooling layer is arranged above the sampling layer, an air inlet pipe is inserted into the heating layer, the air pump is connected with the sampling bottle, and a sampling pipe of the sampling bottle extends into the sampling layer. Compared with the traditional inertia stage blade, the wave plate does not have a water blocking groove at the turning position of the blade, that is, there is no protruding structure in the flow channel between the wave plates, which is beneficial to reduce the resistance of the gas passing through the wave plate; the outer side of the wire mesh filtering stage is completely covered by an insulating pad, compared with the traditional insulating pad structure, the stability of the wire mesh filtering stage in the device can be improved, and the electrochemical corrosion caused by the contact between the stainless steel wire mesh filtering stage and the aluminum alloy device shell due to mechanical vibration or deformation of the waterproof device can be avoided.

Description

Technical Field

[0001] The present invention relates to an air intake filtration system, specifically a marine air intake filtration system. Background Technology

[0002] The marine environment is characterized by high humidity and high salt spray. When ships sail at sea, the air their engines inhale contains a large amount of water droplets and salt spray. If these droplets and salt spray are not treated, the engine's lifespan will be shortened and the failure rate will increase significantly. Therefore, appropriate structures need to be installed in the engine's air intake to reduce the water droplets and salt spray in the incoming air to a low level to ensure the engine can operate stably for a long time. Current structures for separating water droplets and salt spray include louvers, inertial stage blades, metal mesh, and axial cyclone separators. These structures are often combined and installed in the air intake. Traditional waterproofing devices are generally vertical, meaning that the incoming gas enters the waterproofing device horizontally. The droplets contained in the airflow are captured and accumulate at the bottom of the waterproofing device under gravity. Therefore, the waterproofing device needs to have a drainage pipe at the bottom and a baffle at the bottom to collect water. The addition of drainage pipes and baffles increases the weight of the waterproofing device, and the baffles reduce the flow area of ​​the filter device, which significantly increases the intake resistance of the engine, reduces the engine's charging efficiency, and also makes the intake system more complex, the arrangement of supporting devices more difficult, and makes it difficult to perform operations such as sampling. Summary of the Invention

[0003] The purpose of this invention is to provide a horizontal air intake filtration system that features low resistance, lightweight design, and hydrophobic structure, and is well integrated with heating, sampling, and recooling devices to reduce the resistance of engine intake air. This system also reduces the weight of the intake filtration system while better achieving the functions of de-icing, filtration, sampling, and recooling.

[0004] The objective of this invention is achieved as follows:

[0005] The present invention discloses a horizontal air intake filtration system, characterized in that it includes a housing, a horizontal gravity waterproof device, a sampling bottle, and an air pump. The horizontal gravity waterproof device is installed in the housing. A heating layer is provided below the horizontal gravity waterproof device, and a sampling layer is provided above the horizontal gravity waterproof device. A cooling layer is located above the sampling layer. An air intake pipe is inserted into the heating layer. The air pump is connected to the sampling bottle, and the sampling tube of the sampling bottle extends into the sampling layer.

[0006] The present invention may also include:

[0007] 1. The horizontal gravity waterproof device includes a device shell, a corrugated plate filter stage, and a wire mesh filter stage. The corrugated plate filter stage and the wire mesh filter stage are installed inside the device shell. The corrugated plate filter stage includes a corrugated plate and a connecting rod. The corrugated plate has holes on its side, and the connecting rod passes through all the holes of the corrugated plate to connect the corrugated plates together. The wire mesh filter stage is located above the corrugated plate filter stage. The wire mesh filter stage includes a wire mesh, a wire mesh shell, and a rubber insulating pad. The wire mesh is filled inside the wire mesh shell, and the rubber insulating pad covers the outside of the wire mesh shell.

[0008] 2. The upper side of the sampling layer is closed, and the lower side has a sampling hole.

[0009] 3. Cooling water pipes are installed in the cooling layer, with the inlet and outlet of the cooling water pipes located on both sides of the cooling layer.

[0010] 4. The connecting rod includes an end spacer tube and an inter-plate spacer tube. The end spacer tube is located outside the outermost corrugated plate, and the inter-plate spacer tube is located between two adjacent corrugated plates, so that the spacing between the corrugated plates is equal.

[0011] 5. The corrugated board has a smooth surface, a bending angle of 45°, and a spacing of 7-8 mm between boards.

[0012] 6. The sampling layer has a grid structure, with the sampling holes on the outer ring being larger than the sampling holes in the middle cross.

[0013] 7. The thickness of the cooling water pipe should not exceed 1mm.

[0014] The advantages of this invention are:

[0015] 1. The hierarchical assembly arrangement, compared with the previous decentralized arrangement, can effectively reduce the size of the device and simplify the system structure while achieving multiple functions such as hot flow de-icing, salt spray and droplet filtration, air sampling, and convection recooling.

[0016] 2. Compared with traditional inertial stage blades, corrugated plates do not have water-blocking grooves at the blade turning points, meaning there are no protruding structures in the flow channels between the corrugated plates, which helps to reduce the resistance of gas when passing through the corrugated plates.

[0017] 3. The outer side of the wire mesh filter is completely covered by an insulating pad. Compared with the traditional insulating pad structure, this can improve the stability of the wire mesh filter in the device and prevent electrochemical corrosion caused by mechanical vibration or deformation of the waterproof device, which could result in contact between the stainless steel wire mesh filter and the aluminum alloy device shell.

[0018] 4. The design of uniformly arranging sampling holes on the front side can efficiently and uniformly complete the sampling of the incoming airflow, making the sample more universal and helping to reduce the resistance of gas flow through the sampling layer. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 A schematic diagram of the horizontal gravity waterproofing device;

[0021] Figure 3 This is a schematic diagram of the internal structure of a horizontal gravity waterproofing device.

[0022] Figure 4 This is a schematic diagram of a corrugated plate filter stage;

[0023] Figure 5 This is a schematic diagram of a wire mesh filter stage;

[0024] Figure 6 This is a schematic diagram of one side of the sampling layer that is closed.

[0025] Figure 7 This is a schematic diagram of one side of the sampling layer with sampling holes;

[0026] Figure 8 This is a schematic diagram of the cooling layer and cooling pipe layout. Detailed Implementation

[0027] The invention will now be described in more detail with reference to the accompanying drawings:

[0028] Combination Figure 1-8 The overall configuration of the filtration system consists of flange 1, heating layer 2, horizontal gravity waterproof device 4, sampling layer 5, cooling layer 7, sampling tube 9, sampling bottle 10, and sampling pump 11.

[0029] The heating layer 2 has an air inlet pipe 3 connected to its side, which is used to introduce hot air into the air passage.

[0030] The horizontal gravity waterproof device 4 consists of a device shell 4.1, a corrugated plate filter stage 4.2, a wire mesh filter stage 4.3, a cover plate 4.4, and a corrugated plate baffle 4.5.

[0031] The corrugated plate filter stage 4.2 is mainly composed of several corrugated plates 4.2.1 arranged together. The corrugated plates 4.2.1 have openings on their sides, and the connecting rods 4.2.2 pass through the openings. In order to ensure that all the corrugated plates 4.2.1 are arranged at equal intervals, the end spacers 4.2.3 and the inter-plate spacers 4.2.4 are arranged between the corrugated plates 4.2.1. The corrugated plate baffles 4.5 and the corrugated plate filter stage 4.2 are both installed in the device housing 4.1.

[0032] The wire mesh filter stage 4.3 consists of a wire mesh 4.3.1, a wire mesh housing 4.3.2, and a rubber insulating pad 4.3.3. The wire mesh 4.3.1 fills the inside of the wire mesh housing 4.3.2, while the rubber insulating pad 4.3.3 covers the outside of the wire mesh housing 4.3.2.

[0033] The corrugated sheet 4.2.1 requires a large degree of bending. To reduce resistance, the airflow passes through four bends before exiting when flowing between the corrugated sheets 4.2.1. The surface of the corrugated sheet is smooth, without any protruding structures, with a bending angle of 45° and a spacing of 7–8 mm between sheets.

[0034] For the assembly of the horizontal gravity waterproof device 4, the outer shell 4.1 of the device can be welded together with the corrugated plate baffle 4.5 first. Then, the corrugated plate filter stage 4.2 and the wire mesh filter stage 4.3 can be placed into the outer shell 4.1 from top to bottom. Finally, the cover plate 4.4 can be installed on the top of the outer shell 4.1 and welded to the outer shell 4.1.

[0035] The upper side of sampling layer 5 is closed, while the lower side has uniformly distributed small-diameter sampling holes 5.1. Sampling tubes 9 are connected to the side of sampling layer 5, and are subsequently connected to sampling bottle 10 and air pump 11 via pipes. Because the airflow velocity at the airway wall is relatively lower than that in the middle of the airway, the diameter of the sampling holes around the perimeter should be slightly larger than that of the cross-shaped sampling holes. The diameter of the sampling holes around the perimeter should preferably be 2 mm, and the diameter of the cross-shaped sampling holes should preferably be 1 mm.

[0036] For the cooling layer 7, the cooling water inlet 6 and the cooling water outlet 8 are respectively arranged on both sides of the cooling layer 7, and a tortuous cooling water pipe 7.1 connects the cooling water inlet 6 and the cooling water outlet 8.

[0037] The cooling water pipe 7.1 has a wall thickness of 1mm to ensure it is thin enough to reduce convective heat transfer losses.

[0038] Since the entire system is placed vertically, the heating layer 2 is welded to the flange 1, making the fixation more secure.

[0039] The incoming air flows from bottom to top. Upon passing through heating layer 2, it is heated by the hot airflow introduced through inlet pipe 3. After passing through corrugated plate 4.2.1, the airflow direction is forcibly changed. Because water droplets in the air are relatively large and cannot be deflected by the airflow, they collide with corrugated plate 4.2.1 and flow downwards along the plate wall under gravity. Droplets with smaller masses that cannot be captured by the corrugated plate are captured by the wire mesh filter stage 4.3 and also move downwards under gravity, achieving the effect of filtering air droplets. Afterwards, when the airflow passes through sampling layer 5, a portion of the gas, driven by air pump 11, flows through sampling hole 5.1, through sampling tube 9, and into sampling bottle 10 to complete gas collection. The remaining gas flows to cooling layer 7. Cooling water flows in from cooling water inlet 6, through cooling water pipe 7.1, and out from cooling water outlet 8. The gas is cooled by heat exchange as it flows through cooling water pipe 7.1 before flowing out of the system, completing the filtration and sampling process for the incoming air.

Claims

1. A horizontal air intake filtration system characterized by: The device comprises a shell, a horizontal gravity waterproof device, a sampling bottle and a gas pump, the horizontal gravity waterproof device is installed in the shell, a heating layer is arranged below the horizontal gravity waterproof device, a sampling layer is arranged above the horizontal gravity waterproof device, a cooling layer is arranged above the sampling layer, an air inlet pipe is inserted into the heating layer, the gas pump is connected with the sampling bottle, and a sampling pipe of the sampling bottle extends into the sampling layer; The horizontal gravity waterproof device comprises a device shell, a corrugated plate filtering stage and a wire mesh filtering stage, the corrugated plate filtering stage and the wire mesh filtering stage are installed in the device shell, the corrugated plate filtering stage comprises corrugated plates and connecting rods, holes are formed in side surfaces of the corrugated plates, and the connecting rods pass through the holes of all the corrugated plates so as to connect the corrugated plates together; the wire mesh filtering stage is arranged above the corrugated plate filtering stage, and the wire mesh filtering stage comprises a wire mesh, a wire mesh shell and a rubber insulation pad, the wire mesh is filled in the wire mesh shell, and the rubber insulation pad is wrapped on the outside of the wire mesh shell. The connecting rod comprises end distance tubes and plate distance tubes, the end distance tubes are arranged outside the outermost corrugated plates, and the plate distance tubes are arranged between adjacent corrugated plates, so that the distances between the corrugated plates are equal.

2. The horizontal inlet filtration system of claim 1, wherein: The sampling layer is closed on the top side and is provided with sampling holes on the bottom side.

3. The horizontal inlet filtration system of claim 1, wherein: Cooling water pipes are arranged in the cooling layer, and the inlet and outlet of the cooling water pipes are arranged on the two sides of the cooling layer.

4. The horizontal inlet filtration system of claim 1, wherein: The surface of the corrugated plate is smooth, the bending angle is 45°, and the distance between the plates is 7-8 mm.

5. The horizontal inlet filtration system of claim 2, wherein: The sampling layer has a cross structure, and the sampling holes of the outer ring are larger than the sampling holes of the middle cross.

6. The horizontal inlet filtration system of claim 3, wherein: The thickness of the pipe of the cooling water pipe is not greater than 1 mm.

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