Combined type filter element water separator for aircraft

Abstract

The invention provides a combined filter element water separator for an aircraft. The combined 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 invention, the problem that the product of the type puzzles ground operators for many years and can only be judged and maintained by 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 invention relates to the technical field of water separators, and 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: 1) Failure of core components cannot be monitored. The blockage of the core component filter will cause the pressure at the downstream end of the entire aircraft air conditioning system to increase, affecting system performance and thus the completion of the flight mission. However, in the absence of any fault information, operators can only blindly check all system components one by one.

[0003] 2) The core components 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.

[0004] 3) Difficulty in inspection and maintenance of core components. The core components of existing products, filter elements, are all installed in sealed housings, without direct inspection and maintenance channels. If you want to check the condition of the filter element, you can only clear the on-board maintenance channel and remove the water separator from the aircraft before you can perform maintenance on the filter element. This is a large workload and also increases the risks of other systems.

[0005] 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. Summary of the invention

[0006] 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 time, simplify the ground maintenance work procedures, improve the aircraft dispatch rate, optimize the aircraft system maintenance work, meet the maintenance requirements of aircraft emergency dispatch, and effectively solve the problems that have plagued aircraft maintenance personnel for many years.

[0007] The purpose of the present invention is achieved through the following technical solutions: 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, and an inlet joint and an outlet joint connected to the shell part are respectively mounted on the front and rear sides of the shell; the inspection cover is a detachable cover at the top opening of the shell; it also includes a filter element system installed 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 installed inside the shell near the inlet joint, and the side wall of the front bracket does not contact the inner wall of the shell; the rear bracket is two in number and is 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 screen assemblies respectively connected between the two rear brackets and between the front bracket and each rear bracket. Two groups of filter screen assemblies of the combined filter element are respectively installed between the front bracket and each rear bracket to form the first filter layer, and the other two groups of filter screen assemblies are connected as a whole and installed between the two rear brackets to form the second filter layer; each group of filter screen assemblies consists of two filter screens and a filter screen mounting frame; the two filter screens are fixed on both sides of the filter screen mounting frame in parallel with each other. Each group of filter screen assemblies 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 body for discharging the accumulated water inside the shell body; the inner bottom of the circular frame is concave to form a water collection tank located directly below the filter screen, and a drainage port is provided at the bottom of the water collection tank, and the drainage port is connected to the drainage nozzle.

[0008] 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 are installed one-to-one on four groups of filter assemblies to detect the pollution level of the filter assemblies; the display is installed on the inspection port cover to display the pollution level of each group of filter assemblies; the pressure sensor is installed on the shell mounting seat to measure 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, the display, the pressure sensor and the 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.

[0009] 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 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.

[0010] The beneficial effects of the present invention are: 1) Application of health management system. After processing the internal contamination data of the separator, the display on the inspection cover can intuitively display the working and failure status of the core components of the water separator, which completely solves the problem that the ground operators of this type of product can only judge and repair based on experience for many years.

[0011] 2) The sheet filter assembly constitutes the core filter element of the water separator. The traditional idea of ​​the integral design of the water separator filter element is changed. The filter element is decomposed into multiple groups of sheet filter elements with uniform specifications and the same structure. By replacing only the failed components, the current situation that the integral filter element needs to be replaced as a whole to eliminate the fault is solved, achieving the effect of saving labor and material costs and shortening the maintenance cycle.

[0012] 3) Open maintenance channel design. The traditional sealed housing is replaced with an openable inspection cover. The components to be maintained can be easily taken out by opening the cover, and a display of the working status of each filter assembly is set on the cover, which completely solves the problem of blocked filter element inspection channel and difficult repair and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0014] Figure 1 It is a schematic structural diagram of the combined filter element water separator for aircraft according to the present invention.

[0015] Figure 2 The figure is a schematic diagram of the exploded structure of the combined filter element water separator for aircraft according to the present invention.

[0016] Figure 3 It is a schematic structural diagram of the filter assembly of the present invention.

[0017] Figure 4 The present invention is a top view of the combined filter element water separator for aircraft with the inspection cover closed.

[0018] As shown in the figure: 1-shell, 2-shell mounting base, 3-drain nozzle, 4-outlet joint, 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 joint, 18-cable. DETAILED DESCRIPTION

[0019] The following is an explanation of the implementation of the present invention by specific specific embodiments. People familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example 1

[0022] 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.

[0023] The housing mounting seat 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 bolts.

[0024] The shell 1 is a hollow box body 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 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 in the shell 1 flows out of the shell 1 through the outlet joint 4.

[0025] The inspection cover 8 is detachably sealed (tightly covered) at the top opening of the housing 1, and the side of the inspection cover 8 is hinged to the top side of the housing 1 through a hinge. The traditional sealed housing is changed into an openable inspection cover 8, and the components to be maintained can be easily taken out by opening the inspection cover 8, which completely solves the problem of blocked inspection channel of the filter element and difficulty in repair and maintenance.

[0026] 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.

[0027] The front bracket 14 is installed inside the shell 1 near the inlet joint 17 (the inlet end of the shell 1), and 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).

[0028] There are two rear brackets 6 located at the rear side of the front bracket 14 , and the two rear brackets 6 are respectively fixed on the inner side walls of the shell 1 at both sides of the outlet joint 4 .

[0029] 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. 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. The two groups of filter screen components between the front bracket 14 and the two rear brackets 6 and the front bracket 14 form a V-shaped structure (first filter layer), and the concave surface of the V-shaped structure faces the outlet joint 4; the other two groups of filter screen components of the combined filter element 7 are connected as a whole and installed between the two rear brackets 6 to form a second filter layer. The two groups of filter screen components located between the two rear brackets 6 are also connected to form a V-shaped structure (i.e., the second filter layer), and the concave surface of the V-shaped structure also faces the outlet joint 4. The side walls of the front bracket 14 and the rear bracket 6 are provided with a filter element installation groove 13 for installing the filter screen component, and the side walls of the filter screen component are embedded in the filter element installation groove 13. Each filter assembly consists of two sheet 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 screen 71 is 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 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, decomposes the filter element into multiple groups of sheet filter elements with uniform specifications and the same structure, and solves the current situation that the integral filter element needs to be replaced as a whole to eliminate the fault by replacing only the failed components, thereby saving labor and material costs and shortening the maintenance cycle.

[0030] 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 located directly below the filter 71 is formed inwardly at the bottom of the inner side of the circular frame 73, and a drainage port 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. Working principle:

[0031] The airflow that is about to flow into the aircraft cabin first enters 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, and then passes through the two groups of filter screen components of the first filter layer, and the water vapor and dirt are filtered out by the filter screen 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 the water vapor and dirt are filtered out by the filter screen 71 again to obtain dry and clean gas, and finally the gas flows out from the outlet joint 4 into the aircraft cabin; the water filtered by the filter screen 71 slides along the filter screen 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

[0032] In order to completely solve the problem that the ground operators of this type of products have been troubled for many years and can only judge and repair based on experience, this embodiment adds the following structure on the basis of embodiment 1.

[0033] The aircraft combined filter element 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 intuitively displays the working and failure conditions of the core components of the combined filter element water separator through the display 11 on the inspection cover 8.

[0034] There are four pollution degree measuring sensors 9 installed one-to-one on four groups of filter screen assemblies, and they are used to detect the pollution degree of the filter screen assemblies and transmit the measured data to the data processor 12 through the cable 18 .

[0035] The display 11 is installed on the inspection cover 8 and is used to display the pollution degree of each group of filter components. The green color on the display 11 represents normal, the red color represents serious pollution, and other colors represent maintenance as needed.

[0036] 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 through the cable 18 .

[0037] 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

[0038] In order to improve the safety of the combined filter element water separator, this embodiment adds a failure mode on the basis of Embodiment 2, and the failure mode is implemented through the following structure.

[0039] 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 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 4. Example 4

[0040] 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 the second embodiment.

[0041] 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 shell 1. The interface on one side is connected to the data processor 12 through a cable 18, and 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 through the cable 18.

[0042] Other aspects of the present invention that are not described in detail are all conventional techniques known to those skilled in the art.

[0043] It should be noted that the terms "comprises", "includes" or any other variations are intended to cover non-exclusive inclusion, so 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 also includes elements inherent to such process, method, article or apparatus.

[0044] 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 an aircraft, comprising a housing mounting seat (2), a housing (1) and an inspection port cover (8); the housing (1) is a hollow box body mounted on the housing mounting seat (2) and having an opening at the top, an inlet connector (17) and an outlet connector (4) connected to the interior of the housing (1) are respectively mounted on the front and rear sides of the housing (1); the inspection port cover (8) is a detachable cover at the top opening of the housing (1); the characteristics are: 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) at a position close to 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 rear brackets (6) are two in number and located at the rear side of 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 support (14) and each rear support (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 supports (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 a filter screen assembly is provided on the side walls of the front bracket (14) and the rear bracket (6), and the side wall of the filter screen assembly is 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 screen assembly comprises 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 set of filter screen components also includes 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 bottom of the rear side of the housing (1); a water collecting trough (5) located directly below the filter screen (71) is formed inwardly at the bottom of the inner side of the circular frame (73); a drainage port is provided at the bottom of the water collecting trough (5), and the drainage port is communicated with the drainage nozzle (3).

8. The combined filter element water separator for aircraft according to claim 1, characterized in that: The system also includes a health management system, the health management system including a pollution degree measuring sensor (9), a display (11), a data processor (12) and a pressure sensor (16); the pollution degree measuring sensors (9) are four and are mounted one-to-one on four groups of filter screen assemblies for detecting the pollution degree of the filter screen assemblies; the display (11) is mounted on the inspection port cover (8) for displaying the pollution degree of each group of filter screen assemblies; the pressure sensor (16) is mounted 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 mounted on the inspection port cover (8) and is connected to the pollution degree measuring 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, and 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 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 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 (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 of the tail fitting (10) is connected to the data processor (12) via a cable (18), while the interface on the other side of the tail fitting (10) is connected one-to-one to a display (11), a safety valve (15), a pressure sensor (16), and a contamination measurement sensor (9) via the cable (18).

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