Combined type filter element water separator for aircraft

Abstract

The utility model provides a combined type filter element water separator for an aircraft. The combined type filter element water separator comprises a shell mounting seat, a shell, an inspection opening cover, a filter element system and a health management system, the shell is mounted on the shell mounting seat, and an inlet joint and an outlet joint are mounted on the shell; the inspection opening cover is mounted at the top of the shell; the filter element system comprises a front bracket, a rear bracket and a combined filter element; the front support is installed in the shell, and the side wall of the front support does not make contact with the inner side wall of the shell. The two rear brackets are respectively fixed on the inner side wall of the shell on the two sides of the outlet joint; the combined filter element comprises four groups of filter screen components which are respectively connected between the two rear brackets and between the front bracket and each rear bracket. According to the utility model, the problem that the product of the type puzzles ground operators for many years and can only judge and maintain according to experience is thoroughly solved; the current situation that an integral filter element needs to be integrally replaced to eliminate faults is solved; the problems that a filter element overhauling channel is not smooth, and repairing and maintaining are difficult are thoroughly solved.

Description

Technical Field

[0001] The utility model relates to the technical field of water separators, in particular to a combined filter element water separator for aircraft. Background Art

[0002] The existing aircraft water separator has the following shortcomings during use and maintenance:

[0003] 1) Core component failure cannot be monitored. Clogged core component filters can cause pressure to rise downstream of the entire aircraft air conditioning system, affecting system performance and, in turn, the completion of the flight mission. However, without any fault information available, operators can only blindly check all system components one by one.

[0004] 2) The core component can only be replaced as a whole. Once the core component filter element is faulty, it can only be replaced as a whole, resulting in material waste.

[0005] 3) Difficulty inspecting and maintaining core components. The core filter element of existing products is installed in a sealed housing, without direct access for inspection or maintenance. To inspect the filter element, one must first clear the onboard maintenance access and remove the water separator from the aircraft. This labor-intensive task increases risks to other systems.

[0006] The above deficiencies increase the difficulty of aircraft maintenance and support, affect the aircraft dispatch rate, and in serious cases even affect the completion of the mission. Utility Model Content

[0007] In order to solve the above problems, the purpose of the present invention is to provide a combined filter element water separator for aircraft, which can shorten the aircraft maintenance and support time, simplify the ground maintenance work procedures, improve the aircraft dispatch rate, optimize the aircraft system maintenance and support work, meet the maintenance and support requirements of aircraft during emergency dispatch, and effectively solve the problems that have plagued aircraft maintenance and support personnel for many years.

[0008] The purpose of the utility model is achieved through the following technical solutions:

[0009] A combined filter element water separator for aircraft, a shell mounting seat, a shell and an inspection cover; the shell is a hollow box mounted on the shell mounting seat and open at the top, with an inlet joint and an outlet joint connected to the shell part mounted on the front and rear sides of the shell respectively; the inspection cover is a detachable cover at the top opening of the shell; it also includes a filter element system mounted inside the shell and located between the inlet joint and the outlet joint; the filter element system includes a front bracket, a rear bracket and a combined filter element; the front bracket is mounted inside the shell near the inlet joint, and the side wall of the front bracket does not contact the inner wall of the shell; there are two rear brackets and they are located on the rear side of the front bracket, and the two rear brackets are respectively fixed to the inner wall of the shell on both sides of the outlet joint; the combined filter element includes four groups of filter mesh assemblies respectively connected between the two rear brackets and between the front bracket and each rear bracket. Two of the filter screen assemblies of the combined filter element are installed between the front bracket and each rear bracket to form the first filter layer, and the other two filter screen assemblies are connected as one and installed between the two rear brackets to form the second filter layer; each filter screen assembly consists of two filter screens and a filter screen mounting frame; the two filter screens are fixed parallel to each other on both sides of the filter screen mounting frame. Each filter screen assembly also includes a circular frame, and the mesh plate structure formed by the filter screen and the filter screen mounting frame is installed on the inner side of the circular frame. A drainage nozzle is provided at the bottom of the rear side of the shell to discharge the water accumulated inside the shell; the inner bottom of the circular frame is concave to form a water collection tank located directly below the filter screen, and a drain outlet is provided at the bottom of the water collection tank, which is connected to the drainage nozzle.

[0010] Furthermore, in order to completely solve the problem that this type of product has troubled ground operators for many years and can only be judged and repaired based on experience, the combined filter element water separator for aircraft also includes a health management system, which includes a pollution measurement sensor, a display, a data processor and a pressure sensor; the pollution measurement sensors are four and installed one-to-one on four groups of filter assemblies for detecting the pollution level of the filter assemblies; the display is installed on the inspection port cover for displaying the pollution level of each group of filter assemblies; the pressure sensor is installed on the shell mounting seat for measuring the pressure of the cavity between the inner wall of the shell and the first filter layer; the data processor is installed on the inspection port cover and is connected to the pollution measurement sensor, display, pressure sensor and airborne display system through different cables, and is responsible for receiving and comparing signals, not only transmitting the pollution comparison result data of the combined filter element to the display, but also transmitting the water separator pressure comparison result data to the airborne display system for reference by the operator.

[0011] Furthermore, in order to improve the safety of the combined filter element water separator, a safety valve is installed in the middle of the front bracket; the safety valve is an electric valve, which is connected to the data processor through a cable. When the pressure back pressure of the cavity between the inner wall of the shell and the first filter layer exceeds the set value, the data processor controls the safety valve to open, and the airflow does not pass through the first filter layer, but directly enters between the first filter layer and the second filter layer, and finally flows through the second filter layer to the outlet joint.

[0012] The beneficial effects of the present invention are:

[0013] 1) Application of a health management system. After processing the internal contamination data of the separator, the display on the inspection cover visually displays the working and failure status of the core components of the water separator, completely resolving the problem that has plagued ground operators for years, where judgment and maintenance can only be based on experience.

[0014] 2) The sheet filter assembly forms the core filter element of the water separator. This breaks away from the traditional monolithic design of water separator filter elements by breaking them down into multiple groups of sheet filter elements with uniform specifications and identical structures. This eliminates the need to replace the entire monolithic filter element to correct a fault by replacing only the failed component. This reduces labor and material costs and shortens maintenance cycles.

[0015] 3) Open maintenance access design. The traditional sealed housing is replaced with an openable inspection cover. The cover allows easy access to components requiring maintenance. The cover also displays the working status of each filter assembly, completely resolving the issue of poor filter element access and the resulting difficulties in repair and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be described in further detail below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic structural diagram of the combined filter element water separator for aircraft according to the utility model.

[0018] Figure 2 This is a schematic diagram of the exploded structure of the combined filter element water separator for aircraft according to the utility model.

[0019] Figure 3 This is a structural schematic diagram of the filter assembly of the present invention.

[0020] Figure 4 This is a top view of the combined filter element water separator for aircraft of the utility model when the inspection cover is closed.

[0021] Shown in the figure: 1-shell, 2-shell mounting base, 3-drain nozzle, 4-outlet connector, 5-water collection tank, rear bracket, 7-combined filter element, 71-filter screen, 72-filter screen mounting bracket, 8-inspection cover, 9-pollution measurement sensor, 10-tail accessory, 11-display, 12-data processor, 13-filter element mounting slot, 14-front bracket, 15-safety valve, 16-pressure sensor, 17-inlet connector, 18-cable. DETAILED DESCRIPTION

[0022] The following describes the implementation of the present invention using specific embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The embodiments described are merely a portion of the present invention, not all of it. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0023] It should be noted that the structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in this specification for the understanding and reading of those familiar with this technology, and are not used to limit the conditions for the implementation of this utility model. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in this utility model without affecting the efficacy and purpose of the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle", etc. quoted in this specification are only for the convenience of description and are not used to limit the scope of the implementation of this utility model. Changes or adjustments in their relative relationships should also be considered as the scope of the implementation of this utility model without substantially changing the technical content.

[0024] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances. Example 1

[0025] like Figures 1 to 4 As shown, this embodiment provides a combined filter element water separator for aircraft, a housing mounting seat 2, a housing 1, an inspection port cover 8 and a filter element system.

[0026] The housing mounting base 2 serves as a mounting base for the entire combined filter element water separator, and is fastened and mounted in an aircraft (such as an airplane) by means of bolts.

[0027] The shell 1 is a hollow box installed on the shell mounting base 2 and with an open top. The overall structure is square. An inlet joint 17 connected to the shell 1 is installed at the inlet end on the front side of the shell 1. The airflow outside the shell 1 enters the interior of the shell 1 through the inlet joint 17. An outlet joint 4 connected to the shell 1 is installed at the outlet end on the rear side of the shell 1. The airflow inside the shell 1 flows out of the shell 1 through the outlet joint 4.

[0028] The inspection cover 8 is a removable cover (tightly closed) at the top opening of the housing 1. The side of the inspection cover 8 is hingedly connected to the top side of the housing 1. By replacing the traditional sealed housing with an openable inspection cover 8, the components requiring maintenance can be easily removed by opening the inspection cover 8, completely resolving the problem of poor access to the filter element, making repair and maintenance difficult.

[0029] The filter element system is installed inside the housing 1 and is located between the inlet connector 17 and the outlet connector 4. The filter element system includes a front bracket 14, a rear bracket 6 and a combined filter element 7.

[0030] The front bracket 14 is installed inside the shell 1 near the inlet joint 17 (the inlet end of the shell 1). The front bracket 14 is vertically arranged directly behind the inlet joint 17. The side wall of the front bracket 14 does not contact the inner wall of the shell 1 (the cavity between the two serves as an airflow channel).

[0031] There are two rear brackets 6 and they are located at the rear side of the front bracket 14 . The two rear brackets 6 are respectively fixed on the inner side walls of the shell 1 on both sides of the outlet joint 4 .

[0032] The combined filter element 7 includes four sets of filter assemblies, each connected between the two rear supports 6 and between the front support 14 and each rear support 6. Two of the filter assemblies are installed between the front support 14 and each rear support 6 to form a first filter layer. The two sets of filter assemblies between the front support 14 and the two rear supports 6 form a V-shaped structure with the front support 14 (the first filter layer), with the concave surface of the V-shaped structure facing the outlet connector 4. The other two sets of filter assemblies are connected and installed between the two rear supports 6 to form a second filter layer. The two sets of filter assemblies between the two rear supports 6 also form a V-shaped structure (i.e., the second filter layer), with the concave surface of the V-shaped structure also facing the outlet connector 4. Filter element mounting slots 13 for mounting the filter assemblies are provided on the sidewalls of the front support 14 and the rear support 6. The sidewalls of the filter assemblies are embedded in these filter element mounting slots 13. Each filter assembly consists of two sheet-shaped filters 71, a filter mounting frame 72, and a circular frame 73; the two filter screens 71 are fixed parallel to each other on both sides of the filter mounting frame 72, and the filter screens 71 are used to filter water molecules and dirt in the airflow. The mesh structure formed by the filter screen 71 and the filter mounting frame 72 is installed on the inner side of the circular frame 73. The sheet-shaped filter assembly constitutes the core filter element of the water separator. It changes the idea of ​​the traditional integral design of the water separator filter element and decomposes the filter element into multiple groups of sheet-shaped filter elements with uniform specifications and the same structure. By replacing only the failed components, it solves the current situation that the integral filter element needs to be replaced as a whole to eliminate the fault, thereby saving labor and material costs and shortening the maintenance cycle.

[0033] A drainage nozzle 3 is provided at the bottom of the rear side of the shell 1 for discharging the accumulated water inside the shell 1; a water collecting trough 5 is formed inwardly at the bottom of the inner side of the circular frame 73 and is located directly below the filter screen 71. A drainage outlet is provided at the bottom of the water collecting trough 5, which is connected to the drainage nozzle 3 for discharging the filtered water out of the shell 1.

[0034] Working principle:

[0035] The airflow that is about to flow into the aircraft cabin first enters the interior of the shell 1 from the inlet joint 17, and then enters the cavity between the inner wall of the shell 1 and the first filter layer. Then, it passes through the two groups of filter components of the first filter layer and is filtered out of water vapor and dirt by the filter 71, and the airflow is dehumidified and cleaned. After that, the airflow enters the cavity between the first filter layer and the second filter layer, and then passes through the second filter layer, and is again filtered out of water vapor and dirt by the filter 71 to obtain dry and clean gas. Finally, the gas flows out from the outlet joint 4 into the aircraft cabin; the water filtered by the filter 71 slides along the filter 71 into the sump 5, and then flows along the sump 5 to the drain outlet, and flows from the drain outlet to the drain nozzle 3 to be discharged outside the shell 1. Example 2

[0036] In order to completely solve the problem that the current ground operators of this type of products have been troubled for many years and can only rely on experience to make judgments and repairs, this embodiment adds the following structure on the basis of embodiment 1.

[0037] The aircraft combined filter cartridge water separator also includes a health management system, which includes a contamination measurement sensor 9, a display 11, a data processor 12, and a pressure sensor 16. After processing the contamination data inside the separator, the health management system visually displays the operating and failure status of the combined filter cartridge water separator's core components via the display 11 on the inspection cover 8.

[0038] There are four pollution measurement sensors 9 installed one-to-one on four groups of filter assemblies, and they are used to detect the pollution levels of the filter assemblies and transmit the measurement data to the data processor 12 via cables 18 .

[0039] The display 11 is mounted on the inspection port cover 8 and is used to display the degree of contamination of each filter assembly. Green on the display 11 represents normal, red represents severe contamination, and other colors represent maintenance as needed.

[0040] The pressure sensor 16 is mounted on the housing mounting base 2 , and the measuring head of the pressure sensor 16 is inserted into the housing 1 to measure the pressure of the cavity between the inner wall of the housing 1 and the first filter layer, and transmits the measured data to the data processor 12 via the cable 18 .

[0041] The data processor 12 is installed on the inspection port cover 8 and is connected to the pollution measurement sensor 9, the display 11, the pressure sensor 16 and the onboard display system through different cables 18. It is responsible for receiving and comparing signals, and not only transmits the pollution comparison result data of the combined filter element to the display 11, but also transmits the water separator pressure comparison result data to the onboard display system for reference by the operator. Example 3

[0042] In order to improve the safety of the combined filter element water separator, this embodiment adds a failure mode on the basis of Example 2, and the failure mode is implemented through the following structure.

[0043] A safety valve 15 is installed in the middle of the front bracket 14; the safety valve 15 is an electric valve, which is connected to the data processor 12 through a cable 18. When the pressure sensor 16 detects the pressure data of the cavity between the inner wall of the shell 1 and the first filter layer, it is transmitted to the data processor 12. When the back pressure of the pressure data exceeds the safety pressure setting value on the data processor 12, the data processor 12 controls the safety valve 15 to open, and the air flow does not pass through the first filter layer, but directly enters between the first filter layer and the second filter layer, and finally flows through the second filter layer to the outlet connector 4. Example 4

[0044] In order to avoid the connection and maintenance of various electrical components and the routing of the cable 18, this embodiment adds the following settings on the basis of embodiment 2.

[0045] The combined filter element water separator for aircraft also includes a tail accessory 10, which serves as an electrical transfer interface and is arranged in the middle section of the housing 1. The interface on one side is connected to the data processor 12 via a cable 18, while the interface on the other side is connected one-to-one to the display 11, the safety valve 15, the pressure sensor 16 and the contamination measurement sensor 9 via cables 18.

[0046] Other aspects of the present invention that are not described in detail are all conventional technologies known to those skilled in the art.

[0047] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements that are inherent to such process, method, article, or apparatus.

[0048] The protection scope of the present invention is not limited to the technical solutions disclosed in the specific implementation methods. Any modifications, equivalent replacements, improvements, etc. made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A combined filter element water separator for aircraft, comprising a housing mounting seat (2), a housing (1), and an inspection port cover (8); the housing (1) is a hollow box mounted on the housing mounting seat (2) and having an open top, an inlet connector (17) and an outlet connector (4) connected to the interior of the housing (1) being mounted on the front and rear sides of the housing (1), respectively; the inspection port cover (8) is a detachable cover at the top opening of the housing (1); and is characterized in that: It also includes a filter element system installed inside the housing (1) and located between the inlet joint (17) and the outlet joint (4); the filter element system includes a front bracket (14), a rear bracket (6) and a combined filter element (7); the front bracket (14) is installed inside the housing (1) near the inlet joint (17), and the side wall of the front bracket (14) does not contact the inner side wall of the housing (1); the number of the rear brackets (6) is two and they are located behind the front bracket (14), and the two rear brackets (6) are respectively fixed to the inner side wall of the housing (1) on both sides of the outlet joint (4); the combined filter element (7) includes four groups of filter screen components respectively connected between the two rear brackets (6) and between the front bracket (14) and each rear bracket (6).

2. The combined filter element water separator for aircraft according to claim 1, characterized in that: Two groups of filter screen components of the combined filter element (7) are respectively installed between the front bracket (14) and each rear bracket (6) to form a first filter layer, and the other two groups of filter screen components are connected as a whole and installed between the two rear brackets (6) to form a second filter layer.

3. The combined filter element water separator for aircraft according to claim 2, characterized in that: The two groups of filter screen assemblies between the front bracket (14) and the two rear brackets (6) form a V-shaped structure with the front bracket (14), and the concave surface of the V-shaped structure faces the outlet joint (4); at the same time, the two groups of filter screen assemblies located between the two rear brackets (6) are also connected to form a V-shaped structure, and the concave surface of the V-shaped structure also faces the outlet joint (4).

4. The combined filter element water separator for aircraft according to claim 1, characterized in that: A filter element installation groove (13) for installing the filter assembly is provided on the side walls of the front bracket (14) and the rear bracket (6), and the side walls of the filter assembly are embedded in the filter element installation groove (13).

5. The combined filter element water separator for aircraft according to claim 1, characterized in that: Each filter assembly consists of two filter screens (71) and a filter screen mounting frame (72); the two filter screens (71) are fixed parallel to each other on both sides of the filter screen mounting frame (72).

6. The combined filter element water separator for aircraft according to claim 5, characterized in that: Each filter screen assembly further comprises a circular frame (73), and a mesh plate structure formed by the filter screen (71) and the filter screen mounting frame (72) is mounted on the inner side of the circular frame (73).

7. The combined filter element water separator for aircraft according to claim 6, characterized in that: A drainage nozzle (3) for draining water accumulated inside the housing (1) is provided at the rear bottom of the housing (1); a water collecting trough (5) located directly below the filter (71) is formed in a concave shape at the inner bottom of the circular frame (73); a drainage outlet is provided at the bottom of the water collecting trough (5), and the drainage outlet is communicated with the drainage nozzle (3).

8. The combined filter element water separator for aircraft according to claim 1, characterized in that: The health management system also includes a health management system, which includes a pollution degree measurement sensor (9), a display (11), a data processor (12) and a pressure sensor (16); the pollution degree measurement sensors (9) are four and are installed one-to-one on four groups of filter assemblies for detecting the pollution degree of the filter assemblies; the display (11) is installed on the inspection cover (8) for displaying the pollution degree of each group of filter assemblies; the pressure sensor (16) is installed on the housing mounting seat (2) for measuring the pressure of the cavity between the inner wall of the housing (1) and the first filter layer; the data processor (12) is installed on the inspection cover (8) and is connected to the pollution degree measurement sensor (9), the display (11), the pressure sensor (16) and the onboard display system through different cables (18), and is responsible for receiving and comparing signals, not only transmitting the pollution comparison result data of the combined filter element to the display (11), but also transmitting the water separator pressure comparison result data to the onboard display system for reference by the operator.

9. The combined filter element water separator for aircraft according to claim 8, characterized in that: A safety valve (15) is installed in the middle of the front bracket (14); the safety valve (15) is an electric valve, which is connected to the data processor (12) through a cable (18). When the pressure back pressure of the cavity between the inner wall of the shell (1) and the first filter layer exceeds a set value, the data processor (12) controls the safety valve (15) to open, and the air flow does not pass through the first filter layer, but directly enters between the first filter layer and the second filter layer, and finally flows through the second filter layer to the outlet joint (4).

10. The combined filter element water separator for aircraft according to claim 9, characterized in that: The invention also includes a tail fitting (10), which serves as an electrical transfer interface and is arranged in the middle section of the housing (1). The interface on one side is connected to the data processor (12) through a cable (18), while the interface on the other side is connected to the display (11), the safety valve (15), the pressure sensor (16) and the contamination measurement sensor (9) one-to-one through the cable (18).

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