Air filtration system and locomotive vehicle for tunnel working conditions

Abstract

The present invention provides an air filtration system for tunnel working conditions, comprising air filtration components and air duct components symmetrically arranged on both sides of a locomotive, each air filtration component comprising an inertial filter and a fine filter, each air duct component comprising a connecting air duct and an air intake air duct, the air inlet of the air intake air duct is connected to the outside air, the air outlet of the air intake air duct is connected to the air inlet of the connecting air duct, the air outlet of the connecting air duct is connected to the air inlet of the inertial filter, the air outlet of the inertial filter is connected to the air inlet of the fine filter, and the air intake air duct is arranged below the locomotive chassis. The air intake air duct of the air filtration system of the present invention is arranged below the locomotive chassis, the outside air enters the air intake air duct from below the locomotive chassis, and then enters the inertial filter via the connecting air duct, forming an independent air intake structure, which can effectively prevent the inertial filter from inhaling exhaust gas from both sides of the locomotive.

Description

Technical Field

[0001] The present invention relates to the technical field of air filtration, and in particular to an air filtration system for tunnel working conditions. The present invention also relates to a locomotive vehicle having the above air filtration system. Background Art

[0002] The air filtration system of a diesel locomotive is a device installed before the diesel engine intake to remove dust particles suspended in the air. It filters the air entering the diesel engine supercharger to ensure that the cleanliness of the air meets the requirements of the diesel engine, reduce intercooler pollution, reduce resistance, reduce wear of related parts, extend the life of related parts, and improve the durability and reliability of the diesel engine.

[0003] like Figure 5 and Figure 6 As shown, the prior art diesel locomotive air filtration system mainly consists of an inertial filter 12, a fine filter 13, an air duct 14, an air collecting box, etc., which are symmetrically arranged on both sides of the diesel locomotive. When working, the external air first enters the inertial filter 12, enters the fine filter 13 through the air duct 14 after preliminary filtration, and the finely filtered air enters the air collecting box and is transported to the diesel engine supercharger.

[0004] The inertial filter 12 of the air filtration system of the prior art is arranged on the side of the diesel locomotive, sucking air from both sides of the locomotive, and the inertial filter 12 is located above the plane 15 on the locomotive chassis, close to the height of the tunnel exhaust gas accumulation. When the diesel locomotive is running in an open area, the exhaust gas discharged from the chimney dissipates in the atmosphere and has no effect on the diesel engine intake; when the diesel locomotive passes through a tunnel, the high-temperature exhaust gas discharged from the chimney is hot and light, and accumulates in the upper part of the tunnel, which is easily sucked into the inertial filter 12, causing abnormal combustion of the diesel engine. The locomotive can only use reduced power. If you are not careful, it is easy to cause the traction of the diesel locomotive to decrease or disappear, and in severe cases, it will cause the train to stop in the tunnel, creating a safety hazard. When multiple locomotives are reconnected and run in a tunnel, the exhaust gas discharged by the front locomotive is sucked into the rear locomotive, resulting in abnormal locomotive intake, diesel engine power reduction, and the locomotive cannot exert normal power.

[0005] Therefore, based on the above technical problems, technicians in this field are in urgent need of developing an air filtration system for tunnel working conditions. Summary of the invention

[0006] In view of the deficiencies of the prior art, an object of the present invention is to provide an air filtration system for tunnel working conditions and a locomotive vehicle having the above-mentioned air filtration system, so as to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] The present invention provides an air filtration system for tunnel working conditions, comprising air filtration components and air duct components symmetrically arranged on both sides of a locomotive, each of the air filtration components comprising an inertial filter and a fine filter, each of the air duct components comprising a connecting air duct and an air intake air duct, wherein:

[0009] The air inlet of the air intake duct is connected to the external air, the air outlet of the air intake duct is connected to the air inlet of the connecting duct, the air outlet of the connecting duct is connected to the air inlet of the inertial filter, the air outlet of the inertial filter is connected to the air inlet of the fine filter, and the air intake duct is arranged below the locomotive chassis.

[0010] Preferably, a plurality of labyrinth baffles are arranged at intervals on the inner wall of the air inlet duct.

[0011] Preferably, the labyrinth baffle comprises two upper labyrinth baffles and one lower labyrinth baffle, wherein:

[0012] The upper labyrinth baffles extend downward along the upper inner wall of the air inlet duct respectively;

[0013] The lower labyrinth baffle has an inverted "mountain" shape, is disposed between the two upper labyrinth baffles and extends upward along the lower inner wall of the air inlet duct.

[0014] Preferably, a bag filter is provided at the air outlet of the air inlet duct.

[0015] Preferably, the bag filter is detachably arranged at the air outlet of the air inlet duct.

[0016] Preferably, the bag filter is a steel wire mesh supporting the structure.

[0017] Preferably, the connecting air duct has a high boot shape.

[0018] Preferably, the connecting air duct forms a step for walking on at the boot surface.

[0019] Preferably, the air filter assembly further comprises a secondary booster fan arranged after the inertial filter.

[0020] The present invention also provides a locomotive vehicle, comprising the above-mentioned air filtration system for tunnel working conditions.

[0021] Compared with the prior art, the beneficial technical effects of the present invention are:

[0022] (1) Air enters the independent air intake structure formed between the connecting duct and the inertial filter through the air intake duct arranged on the outside of the chassis. The bag filter arranged between the inertial filter and the air intake duct filters the large particles in the air. The bag design of the bag filter can increase the filtering area. The larger impurities filtered out fall by themselves due to gravity. The secondary booster fan can offset the system resistance increased by the chassis ventilation when working, thereby increasing the air intake in the tunnel with poor air quality.

[0023] (2) The high boot-shaped structure connected to the air duct can ensure the passability of the corridor. When the air inlet of the air intake duct is flushed through a high-pressure water gun, the sewage flows out directly from both sides and will not be blocked by the baffle. The baffle structure inside the air intake duct is convenient for cleaning. After cleaning, sewage will not accumulate. When the air flow passes through, the sludge and impurities in the air will be blocked and loaded on the baffle due to inertia and its own viscosity, thereby filtering the sludge and large impurities and preventing the sludge from clogging the air intake duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the main structure of the air filtration system for tunnel working conditions of the present invention;

[0026] Figure 2 It is a left-side structural schematic diagram of an air filtration system for tunnel working conditions of the present invention;

[0027] Figure 3 It is a schematic structural diagram of an air intake duct of an air filtration system for tunnel working conditions of the present invention;

[0028] Figure 4 It is a structural schematic diagram of a connecting air duct of a high boot-shaped structure of an air filtration system for tunnel working conditions of the present invention;

[0029] Figure 5 A front view of an air filtration system of the prior art;

[0030] Figure 6 A top view of an air filtration system according to the prior art.

[0031] In the figure: 1. inertial filter; 2. fine filter; 3. two-stage booster fan; 4. locomotive chassis; 5. connecting air duct; 6. intake air duct; 7. bag filter; 81. upper labyrinth baffle; 82. lower labyrinth baffle; 9. area; 10. area; 11. step; 12. inertial filter, 13. fine filter, 14. air duct; 15. upper plane of locomotive chassis; 16. diesel engine supercharger. DETAILED DESCRIPTION

[0032] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0033] like Figure 1-Figure 4 As shown, the air filtration system for tunnel working conditions of the present invention comprises air filtration components and air duct components symmetrically arranged on both sides of the locomotive, each air filtration component comprises an inertial filter 1 and a fine filter 2, and each air duct component comprises a connecting air duct 5 and an air intake duct 6. Among them, the air inlet of the air intake duct 6 is connected to the external air, the air outlet of the air intake duct 6 is connected to the air inlet of the connecting air duct 5, the air outlet of the connecting air duct 5 is connected to the air inlet of the inertial filter 1, the air outlet of the inertial filter 1 is connected to the air inlet of the fine filter 2, and the air intake duct 6 is arranged below the locomotive chassis 4.

[0034] In a preferred embodiment, if Figure 2 and 3 As shown, a plurality of labyrinth baffles are arranged at intervals on the inner wall of the air inlet duct 6 to form a labyrinth-type air inlet duct 6. The labyrinth baffles include two upper labyrinth baffles 81 and one lower labyrinth baffle 82. The upper labyrinth baffles 81 extend downward along the upper inner wall of the air inlet duct 6, respectively. The lower labyrinth baffle 82 has an inverted "mountain" shape, which is arranged between the two upper labyrinth baffles 81 and extends upward along the lower inner wall of the air inlet duct 6. When outdoor air flows into the air inlet of the air inlet duct 6, the sludge and impurities in the air will be blocked by the two upper labyrinth baffles 81 and one lower labyrinth baffle 82 due to inertia and self-viscosity, and will be gathered in areas 9 and 10, respectively, so as to achieve the filtration of sludge and large impurities, and prevent the sludge from blocking the air inlet of the air inlet duct 6. In addition, the labyrinth-type air inlet duct 6 of the present invention is easy to clean. During cleaning, a high-pressure water gun is used to flush the inside of the air inlet duct 6 from the air inlets at both ends. The sludge attachment surface can be directly flushed, and the sewage flows out directly from both sides without being blocked by the baffle. Therefore, the sewage will not accumulate after cleaning.

[0035] In a preferred embodiment, if Figure 1 and Figure 2As shown, a bag filter 7 is provided at the air outlet of the air inlet duct 6 for filtering large particles of impurities, which fall into the air inlet duct 6 under the action of gravity after filtration. The bag filter 7 is detachably provided at the air outlet of the air inlet duct 6 for easy cleaning. The bag filter 7 is a steel wire mesh of the supporting structure, and the bag filter 7 of the bag design can increase the filtering area and reduce the resistance of the air filtration system. It should be understood by those skilled in the art that the bag filter 7 can also be designed into other irregular shapes and installed in the middle of the air inlet duct 6.

[0036] In a preferred embodiment, if Figure 1 and Figure 4 As shown, the connecting air duct 5 has a high boot shape. Under the premise of ensuring the normal use of the connecting air duct 5, in order to avoid occupying the corridor passing space, the connecting air duct 5 forms a step 11 for walking on the boot surface, thereby ensuring the passability of the corridor. It should be understood by those skilled in the art that other air ducts with similar shapes (without rounded corners, etc.) can also ensure passability.

[0037] Since the air intake duct 6 of the present invention is arranged below the locomotive chassis 4, the external air is sucked in from below the locomotive chassis 4 through the air intake duct 6, so the system resistance of the air filtration system will be greater than that of the external air directly sucked in from both sides of the locomotive. Figure 1 As shown, the air filter assembly further includes a secondary booster fan 3 disposed after the inertial filter 1. The operation of the secondary booster fan 3 can offset the system resistance increased by ventilation at the locomotive chassis 4 and increase the air intake in tunnels with poor air quality. It should be understood by those skilled in the art that the secondary booster fan 3 can be installed in other locations according to the system structure.

[0038] The inertial filter of the present invention is still arranged on both sides of the locomotive, rather than on the locomotive chassis, which can prevent the mud and impurities thrown up by the wheels from clogging the air inlet of the inertial filter. Figure 1 As shown by the arrows in , since the outside air enters the air intake duct 6 from below the locomotive chassis 4 and then enters the inertial filter 1 through the connecting duct 5, an independent air intake structure is formed, which can effectively prevent the inertial filter 1 from inhaling exhaust gas from both sides of the locomotive.

[0039] The present invention also provides a locomotive vehicle, comprising the air filtration system for tunnel working conditions in the above scheme.

[0040] The terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions; the terms "first", "second", etc. in the specification and claims of the present disclosure or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. "Multiple" means two or more, unless otherwise clearly and specifically limited.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present disclosure; the terms used in the specification are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. For example, the terms "length", "width", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", "lateral", "longitudinal", "vertical" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and 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 therefore cannot be understood as a limitation on the invention.

[0042] A person skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the disclosure of the embodiments of the present invention (including the claims) is limited to these examples; under the concept of the embodiments of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and there are many other changes in different aspects of the embodiments of the present invention as described above, which are not provided in detail for the sake of simplicity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims

1. An air filtration system for tunnel working conditions, characterized in that: It includes air filter components and air duct components symmetrically arranged on both sides of the locomotive, each of the air filter components includes an inertial filter and a fine filter, and each of the air duct components includes a connecting air duct and an intake air duct, wherein: The air inlet of the intake duct is connected to the outside air, the air outlet of the intake duct is connected to the air inlet of the connecting duct, the air outlet of the connecting duct is connected to the air inlet of the inertial filter, the air outlet of the inertial filter is connected to the air inlet of the fine filter, and the intake duct is arranged below the locomotive chassis, the connecting duct is arranged on both sides of the locomotive and extends in the height direction of the locomotive, so that the outside air sucked in from the bottom of the locomotive chassis flows from bottom to top into the air filter assembly located on the upper part of the locomotive via the intake duct and the connecting duct.

2. The air filtration system according to claim 1, characterized in that: A plurality of labyrinth baffles are arranged at intervals on the inner wall of the air inlet duct.

3. The air filtration system according to claim 2, characterized in that: The labyrinth baffles include two upper labyrinth baffles and one lower labyrinth baffle, wherein: The upper labyrinth baffles extend downward along the upper inner wall of the air inlet duct respectively; The lower labyrinth baffle has an inverted "mountain" shape, is disposed between the two upper labyrinth baffles and extends upward along the lower inner wall of the air inlet duct.

4. The air filtration system according to claim 1, characterized in that: A bag filter is arranged at the air outlet of the air inlet duct.

5. The air filtration system according to claim 4, characterized in that: The bag filter is detachably arranged at the air outlet of the air inlet duct.

6. The air filtration system according to claim 5, characterized in that: The bag filter is a steel wire mesh supporting the structure.

7. The air filtration system according to claim 1, characterized in that: The connecting air duct has a high boot shape.

8. The air filtration system according to claim 7, characterized in that: The connecting air duct forms a step for walking on the shoe surface.

9. The air filtration system according to claim 1, characterized in that: The air filter assembly also includes a secondary booster fan disposed after the inertial filter.

10. A locomotive vehicle, characterized in that: An air filtration system for tunnel working conditions comprising the air filtration system as described in any one of claims 1 to 9.

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