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JP-7855524-B2 - Air filtration system

JP7855524B2JP 7855524 B2JP7855524 B2JP 7855524B2JP-7855524-B2

Inventors

  • レンヘーガー，アンドレアス
  • サヴィンガー，ミカエル
  • ステュレッソン，マグヌス

Assignees

  • カムフィル パワー システムズ アーベー

Dates

Publication Date
20260508
Application Date
20210503
Priority Date
20200513

Claims (10)

  1. An air filter (1) configured to provide intake air to an engine, A filter chamber (2) including an air inlet opening (3) and an air outlet opening (4), A weather protection hood (5) positioned on the side of the air inlet of the filter chamber, having a downward-facing intake opening (6) and an outlet opening (7) connected to the air inlet opening (3) of the filter chamber, A pulse filter mechanism (8) including one or more filters (9), A static filter mechanism (10) positioned at the air outlet opening (4), In an air filtration device equipped with, An air filtration device characterized in that the pulse filter mechanism (8) is located inside the weather protection hood (5), a maintenance space (11) is provided downstream of the pulse filter mechanism (8) in the filter chamber (2), and the filter (9) of the pulse filter mechanism can be replaced via the maintenance space.
  2. The filter of the pulse filter mechanism (8) has a particle trapping surface (13), The air filtration device according to claim 1, wherein the pulse filter is located within the weather protection hood so that particles released from the particle-capturing surface during pulse cleaning mode can freely fall from the filter element and exit through the intake opening (6) of the weather protection hood (5).
  3. The air filtration device according to claim 1 or 2, wherein the filter of the pulse filter mechanism (8) each includes a filter element that forms a cylindrical and/or conical particle-capturing surface and a mounting plate or fixture, and is positioned such that the particle-capturing surface (13) is vertical , i.e., downward.
  4. The weather protection hood (5) includes a pulse filter mounting structure (18), The pulse filter mounting structure is configured to divide the internal space of the weather protection hood (5) into an upstream space (16) on the upstream side of the mounting structure (18) and a downstream space (17) on the downstream side of the mounting structure (18). The pulse filter is arranged in the upstream space (16), The air filtration apparatus according to any one of claims 1 to 3, wherein the upstream space is accessible from the maintenance space (11) via one or more hatches or cover plates (15) provided in the wall between the weather protection hood and the maintenance space (11) of the filter chamber.
  5. The maintenance space (11) is provided upstream of the static filter mechanism, The air filtration apparatus according to any one of claims 1 to 4, wherein the static filter mechanism includes a plurality of static filters (14) arranged to be accessible from the maintenance space.
  6. Multiple weather protection hoods are connected to the air inlet opening (3) of the filter chamber. The air filtration apparatus according to any one of claims 1 to 5, wherein each of the weather protection hoods includes a pulse filter mechanism (8).
  7. The air filtration device according to claim 6, wherein the weather protection hoods are arranged in overlapping positions.
  8. The air filtration apparatus according to claim 6 or 7, comprising 2 to 10 weather-protective hoods having a pulse filter mechanism (8) connected to the air inlet opening (3) of the filter chamber.
  9. The air filtration apparatus according to any one of claims 1 to 8, further comprising an engine intake duct (12) connected to the outlet opening (4) of the filter chamber.
  10. An air filtration device according to any one of claims 1 to 9, configured to provide intake air to a gas turbine.

Description

This disclosure relates to an air filtration system configured to provide intake air to an engine. Turbomachinery equipment is critical machinery that takes in large volumes of air. Air quality is extremely important for the performance and lifespan of this equipment, directly impacting operator availability, reliability, and profitability. Turbomachinery, such as industrial air compressors and gas turbines, often operates in harsh environments, including rural, urban, or industrial settings, containing various types of particulate pollutants. Intake air must be cleaned before being supplied to the machine; otherwise, impurities in the intake air can damage the engine or reduce its efficiency. Therefore, to prevent or limit potential damage to machine components caused by dust and particles in the air taken in, a filter system, including a static filter, is typically located upstream of the engine's air inlet plenum. Upstream pulse filters can be used to extend the lifespan of static filters by removing the coarsest solid contaminants in the air. Since the filter media of intake pulse filters tend to clog due to environmental conditions such as fog, rain, snow, and dust, frequent cleaning is performed by pulse-forcing compressed air through the filter media in the reverse direction of intake. This maintains filtration efficiency and improves the lifespan of the pulse filter. However, both the pulse filter and other filters downstream of it will eventually need to be replaced when their lifespan is reached. Therefore, all filter units must be accessible to maintenance staff. US 2015/114229A1 discloses an example of how to enable access from a maintenance space for replacing pulse filters. Turbomachinery equipment is typically an extremely large installation that takes in large volumes of air, and there is a need to provide an effective intake filter system for these systems. This disclosure aims to provide an improved air filtration system configured to provide intake air to an engine. The system comprises a filter chamber including an air inlet opening and an air outlet opening; a weather-protective hood positioned on the air inlet side of the filter chamber, having a downward-facing intake opening and an outlet opening connected to the air inlet opening of the filter chamber; a pulse filter mechanism including one or more filters; and a static filter mechanism positioned at the air outlet opening. The pulse filter mechanism is located inside the weather-protective hood. A maintenance space is provided downstream of the pulse filter mechanism within the filter chamber, through which the filters of the pulse filter mechanism can be replaced. The pulse filter in the pulse filter mechanism is positioned appropriately within the weather protection hood so that particles released from the particle-capturing surface of the filter during pulse cleaning mode can freely fall from the filter and exit through the intake opening of the weather protection hood. It is advantageous for the filter in the pulse filter mechanism to be a cartridge filter positioned so that the particle-capturing surface is substantially vertical, i.e., facing downwards. The weather protection hood may include a pulse filter mounting structure, which is appropriately configured to divide the internal space of the weather protection hood into an upstream space on the upstream side of the structure and a downstream space on the downstream side of the structure. It is advantageous for the filter to be located in this upstream space. The upstream space is preferably accessible from the maintenance space via one or more hatches or cover plates provided in the wall between the weather protection hood and the maintenance space of the filter chamber. A maintenance space is appropriately provided upstream of the static filtering mechanism. The static filtering mechanism may preferably include multiple static filters arranged to be accessible from the maintenance space. The air filtration system preferably includes a plurality of weather-protective hoods connected to the air inlet opening of the filter chamber. Each weather-protective hood includes a pulse filter mechanism. The weather-protective hoods are appropriately arranged overlapping each other. The air filtration system may include 2 to 10 weather-protective hoods, and the pulse filter mechanisms are connected to the air inlet opening of the filter chamber. The air filtration system may further include an engine intake duct connected to the outlet opening of the filter chamber, and can be advantageously configured to provide intake air to the gas turbine. This disclosure will become apparent from the detailed description given below. The detailed description and specific examples disclose preferred embodiments of this disclosure only as examples. Those skilled in the art will understand, guided by the detailed description, that modifications and variations are possible within the scope of this d