Duct filter cleaning device and electric locomotive

Abstract

This utility model relates to the field of locomotive technology, and more particularly to a duct filter cleaning device and an electric locomotive. The duct filter cleaning device includes multiple backflush pipes, which are spaced apart in the duct and spaced apart from the filter. Multiple backflush holes are spaced apart along the axial direction of each backflush pipe, and these holes face the filter. An air source is connected to the multiple backflush pipes via a high-pressure connecting pipeline. A first switch control valve is located on the high-pressure connecting pipeline and is used to control the on / off state of the high-pressure connecting pipeline. This utility model can effectively clean the filter, reducing workload and maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of locomotive technology, and in particular to a duct filter cleaning device and an electric locomotive. Background Technology

[0002] The filtration system of the traction motor ventilation system in electric locomotives typically consists of an external centrifugal sedimentation filter and an internal 12-30 mesh steel plate filter. The centrifugal sedimentation filter and filter screen remove relatively large dust particles and rainwater, while some smaller dust particles can be discharged outside the locomotive through the gaps in the traction motor coils and the fins of the composite cooler. After long-term operation, it has been found that while the centrifugal sedimentation filter effectively removes larger dust particles and allows them to be automatically discharged from the dust outlet by gravity, lighter dust particles, mainly poplar and willow catkins, adhering to the filter screen cannot be automatically discharged. Long-term accumulation significantly increases the air intake resistance of the ventilation system, severely affecting the cooling effect of the locomotive's traction motor, transformer, and converter, thus impacting the locomotive's normal operation. Therefore, it is essential to clean the locomotive's steel plate filter screen regularly to ensure that the air intake resistance of the ventilation system meets requirements.

[0003] Currently, the cleaning of steel plate filters on electric locomotives is carried out during locomotive maintenance back at the depot. Because the filters are installed on the sloping surface of the locomotive roof, close to the pantograph, cleaning requires the locomotive to be towed to a screen-free area, necessitating the use of lifting trolleys on both sides. Furthermore, the number of filters on the locomotive roof is considerable, with some locomotives having as many as 32 filters. Each filter requires opening the centrifugal settling filter and removing the pressure plate bolts to remove it for cleaning. This results in a large workload for manual cleaning and increased maintenance costs.

[0004] Therefore, a duct filter cleaning device and an electric locomotive are needed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a duct filter cleaning device and an electric locomotive, which can effectively clean the filter and reduce workload and maintenance costs.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The air duct filter cleaning device includes:

[0008] Multiple backflush pipes are spaced apart in the air duct, and the backflush pipes are spaced apart from the filter screen. Multiple backflush holes are spaced apart on the backflush pipes along the axial direction of the backflush pipes, and the multiple backflush holes are arranged facing the filter screen.

[0009] A gas source, which is connected to multiple backflush pipes via a high-pressure connecting pipeline;

[0010] A first switch control valve is installed on the high-pressure connection pipeline and is used to control the on / off state of the high-pressure connection pipeline.

[0011] In some embodiments, the high-pressure connection pipeline includes a main connection pipe and multiple branch connection pipes. One end of each of the multiple branch connection pipes is connected to the main connection pipe, and each of the multiple branch connection pipes is connected to a corresponding backflush pipe. Each branch connection pipe is provided with a first switch control valve.

[0012] In some embodiments, the first switch control valve is an electrically controlled switch control valve, and multiple first switch control valves are arranged in parallel. The first switch control valve is electrically connected to a power source.

[0013] In some embodiments, the power source includes a battery, and the first switch control valve is electrically connected to the battery.

[0014] In some embodiments, the first switch control valve is a manually operated switch control valve.

[0015] In some embodiments, a pressure reducing valve is provided on the main connecting pipe.

[0016] In some embodiments, the air source is the locomotive main air cylinder, the locomotive main air cylinder is provided with a connector, and the high-pressure connection pipeline is connected to the connector.

[0017] In some embodiments, three backflush pipes are provided, and the three backflush pipes are arranged at equal intervals along the width direction of the filter screen.

[0018] In some embodiments, a second on / off control valve is provided on the main connecting pipe.

[0019] Electric locomotive, including the air duct filter cleaning device as described above.

[0020] The beneficial effects of this utility model are:

[0021] This utility model provides a duct filter cleaning device with multiple backflush pipes spaced apart in the duct, with the backflush pipes and filter screens spaced apart. Multiple backflush holes are spaced apart along the axial direction of the backflush pipes, facing the filter screen. An air source is connected to the multiple backflush pipes via a high-pressure connecting pipeline. A first switch control valve is located on the high-pressure connecting pipeline to control its opening and closing. When backflush cleaning of the filter screen is required, the first switch control valve is opened, and high-pressure gas from the air source flows into the backflush pipes through the high-pressure connecting pipeline and is blown out through the backflush holes on the backflush pipes, thereby blowing away the lighter dust, mainly poplar and willow catkins, accumulated on the filter screen. This method effectively cleans the filter screen, reducing workload and maintenance costs. Furthermore, the distance between the backflush pipe and the filter screen is designed to allow the high-pressure air ejected from the backflush hole to have a certain diffusion effect. This not only cleans the dust on the filter screen over the largest area but also slows down the high-pressure air, reducing its impact on the filter screen and extending its service life.

[0022] The electric locomotive provided by this utility model includes the air duct filter cleaning device described above, which can effectively clean the filter and reduce workload and maintenance costs. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of a duct filter cleaning device according to this utility model;

[0025] Figure 2 This is a schematic diagram of the installation position of a duct filter cleaning device according to this utility model.

[0026] In the picture:

[0027] 100. Centrifugal sedimentation filter; 200. Filter screen; 1. Backflush pipe; 2. Air source; 3. High-pressure connection pipeline; 31. Main connection pipe; 311. Second switch control valve; 32. Branch connection pipe; 321. First switch control valve. Detailed Implementation

[0028] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0029] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0030] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0031] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0032] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0033] After long-term operation of the locomotive, it was found that the centrifugal settling filter could filter out larger dust particles and automatically discharge them from the dust outlet by gravity. However, lighter dust, mainly poplar and willow catkins, adhering to the filter screen surface could not be automatically discharged. To solve this problem and effectively clean the filter screen, reducing workload and maintenance costs, such as... Figures 1-2As shown, this utility model provides a duct filter cleaning device. The duct filter cleaning device includes multiple backflush pipes 1, an air source 2, and a first switch control valve 321.

[0034] Multiple backflush pipes 1 are spaced apart in the air duct, and the backflush pipes 1 and the filter screen 200 are spaced apart. Multiple backflush holes are spaced apart on the backflush pipes 1 along their axial direction, and the multiple backflush holes are oriented towards the filter screen 200. The air source 2 is connected to the multiple backflush pipes 1 through a high-pressure connecting pipe 3. A first switch control valve 321 is installed on the high-pressure connecting pipe 3 and is used to control the on / off state of the high-pressure connecting pipe 3.

[0035] When reverse cleaning of filter 200 is required, the first switch control valve 321 is opened. High-pressure gas from air source 2 flows into backflush pipe 1 through high-pressure connecting pipe 3 and is blown out through backflush holes on backflush pipe 1. This blows up the lighter dust, mainly poplar and willow catkins, accumulated on filter 200 and discharges it from the dust outlet between centrifugal settling filter 100 and filter 200. This method effectively cleans filter 200, reducing workload and maintenance costs. Because there is a certain distance between backflush pipe 1 and filter 200, the purpose is to allow the high-pressure air ejected from the backflush holes to have a certain diffusion effect. This maximizes the cleaning of dust on filter 200 while also slowing down the high-pressure air, reducing its impact on filter 200 and extending its service life. Furthermore, filter 200 can be cleaned from any location when the locomotive is stationary, overcoming the limitations of locomotive maintenance space.

[0036] In some embodiments, the high-pressure connection pipeline 3 includes a main connection pipe 31 and multiple branch connection pipes 32. One end of each branch connection pipe 32 is connected to the main connection pipe 31, and each branch connection pipe 32 is connected to a corresponding backflush pipe 1. Each branch connection pipe 32 is equipped with a first switch control valve 321. This design of the high-pressure connection pipeline 3 as a main connection pipe 31 and multiple branch connection pipes 32 facilitates pipeline layout and saves on pipeline usage. Furthermore, the parallel arrangement of the multiple backflush pipes 1 ensures that the airflow between them is essentially the same, thereby guaranteeing the cleaning effect on the filter screen 200. By arranging multiple first switch control valves 321, the filter screen 200 can be cleaned simultaneously as needed, or specific cleaning can be achieved by opening only some of the first switch control valves 321 as required. This method allows for flexible cleaning of the filter screen 200.

[0037] In some embodiments, the first switch control valve 321 is an electrically controlled switch control valve, and multiple first switch control valves 321 are connected in parallel. Each first switch control valve 321 is electrically connected to a power source. By using an electrically controlled switch control valve, the action of the first switch control valve 321 can be controlled simply by using a controller to control the on / off state of the circuit between the first switch control valve 321 and the power source, thus achieving automated control. The controller can be a microcontroller or a PLC. Controlling the on / off state of the circuit between the first switch control valve 321 and the power source is a conventional method and will not be elaborated upon further here.

[0038] In some embodiments, the power source includes a battery, and the first switch control valve 321 is electrically connected to the battery. Using a battery allows the first switch control valve 321 to be directly powered, which is convenient. Furthermore, once the battery is depleted, it can simply be replaced, and the depleted battery can be recharged for reuse.

[0039] In some embodiments, the first switch control valve 321 is a manually operated switch control valve. By designing the first switch control valve 321 as a manually controlled valve, it can be manually controlled according to actual needs. Whenever a large amount of impurities is found on the filter screen 200, the first switch control valve 321 can be opened to clean the filter screen 200. To facilitate the detection of the opening degree of the manually operated switch control valve, a stroke sensor can be installed at the control lever of the manually operated switch control valve for detection.

[0040] In some embodiments, a pressure reducing valve is provided on the main connecting pipe 31. By providing the pressure reducing valve, the gas pressure blown towards the filter screen 200 can be reduced, thereby effectively cleaning the filter screen 200 while avoiding damage to the filter screen 200 due to excessive gas pressure. In this embodiment, the gas pressure is reduced to 0.2 MPa after passing through the pressure reducing valve.

[0041] In some embodiments, the air source 2 is the locomotive's main air cylinder, which is equipped with a connector, and the high-pressure connecting pipe 3 is connected to the connector. By using the locomotive's main air cylinder as the air source 2, there is no need to arrange a separate air source 2, and the compressed gas in the locomotive's main air cylinder can be used to efficiently clean the filter screen 200. Moreover, the air source is dry and clean, avoiding secondary contamination of the filter screen 200. The connector on the locomotive's main air cylinder facilitates connection with the high-pressure connecting pipe 3. In other embodiments, an air compressor can also be used as the air source 2, and no further restrictions are imposed here.

[0042] In some embodiments, three backflush pipes 1 are provided, and the three backflush pipes 1 are arranged at equal intervals along the width direction of the filter screen 200. By reasonably arranging the backflush pipes 1, only three pipes are needed to effectively cover the filter screen 200, ensuring the backflush cleaning effect.

[0043] In some embodiments, a second switch control valve 311 is provided on the main connecting pipe 31. By providing the second switch control valve 311, it can be directly closed in an emergency, thereby directly cutting off the main connecting pipe 31.

[0044] In some embodiments, the backflush pipe 1 is made of galvanized steel pipe, which is not easy to rust and has a long service life.

[0045] This embodiment also provides an electric locomotive, which includes the above-mentioned air duct filter cleaning device, which can effectively clean the filter 200, reducing workload and maintenance costs.

[0046] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An air duct screen cleaning device, characterized by, include: Multiple backflush pipes (1) are spaced apart in the air duct, and the backflush pipes (1) are spaced apart from the filter screen (200). Multiple backflush holes are spaced apart on the backflush pipes (1) along the axial direction of the backflush pipes (1), and the multiple backflush holes are arranged facing the filter screen (200). Gas source (2), which is connected to multiple backflush pipes (1) via high-pressure connecting pipeline (3); The first switch control valve (321) is installed on the high-pressure connection pipeline (3) and is used to control the opening and closing of the high-pressure connection pipeline (3).

2. The air duct screen cleaning apparatus of claim 1, wherein, The high-pressure connection pipeline (3) includes a main connection pipe (31) and multiple branch connection pipes (32). One end of each of the multiple branch connection pipes (32) is connected to the main connection pipe (31). Each of the multiple branch connection pipes (32) is connected to a backflush pipe (1) in a one-to-one correspondence. Each of the branch connection pipes (32) is equipped with a first switch control valve (321).

3. The air duct screen cleaning apparatus of claim 2, wherein, The first switch control valve (321) is an electrically controlled switch control valve, and multiple first switch control valves (321) are connected in parallel. The first switch control valve (321) is electrically connected to the power supply.

4. The air duct filter screen cleaning device of claim 3, wherein, The power source includes a storage battery, and the first switch control valve (321) is electrically connected to the storage battery.

5. The air duct screen cleaning apparatus of claim 2, wherein, The first switch control valve (321) is a manual switch control valve.

6. The air duct screen cleaning apparatus of claim 2, wherein, A pressure reducing valve is installed on the main connecting pipe (31).

7. The air duct screen cleaning apparatus of claim 1, wherein, The air source (2) is the locomotive main air cylinder, and a connector is provided on the locomotive main air cylinder. The high-pressure connecting pipeline (3) is connected to the connector.

8. The air duct screen cleaning apparatus of claim 1, wherein, The backflush pipe (1) is provided in three parts, and the three backflush pipes (1) are arranged at equal intervals along the width direction of the filter screen (200).

9. The air duct screen cleaning apparatus of claim 2, wherein, A second switch control valve (311) is provided on the main connecting pipe (31).

10. Electric locomotive, characterized in that Includes the air duct filter cleaning device as described in any one of claims 1-9.

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