A nacelle wind-to-liquid conversion device

Abstract

The application discloses a kind of pod wind liquid conversion device, with built-in form installation in the external pod of aircraft with flight Mach number 0.5~0.8 and flight height 5000~8000m, and pod wind liquid conversion device includes cabin body structural member with air intake and exhaust port, air-liquid heat exchanger is arranged in cabin body structural member, liquid filter, expansion type liquid tank, micro liquid pump and wind liquid conversion system data acquisition and host computer communication box.The application has essential difference with current reverse boost air circulation system and evaporation circulation system, the application has no turbine, compressor and other accessories, directly utilize the cooling liquid cooling of cold wind introduced by pod ram intake, although without ground cooling capacity, although refrigeration performance and temperature control accuracy is not as good as evaporation refrigeration cycle system, use range is limited to a certain extent, but its structure is simple, low in cost, good reliability, still have extensive use scene in more pod or airborne electronic equipment.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of aircraft electronic mission pod environmental control subsystem, and particularly relates to a device for realizing the system cooling function by the mission pod alone, with liquid cooling as the main cooling method for the mission pod, but the aircraft cannot provide a liquid cooling circuit. BACKGROUND

[0002] The mission pod is a kind of equipment hung on the outside of an aircraft, and is usually installed on a fighter aircraft to greatly improve the tactical capability of the carrier aircraft. For the mission pod carrying electronic equipment, high or low temperature is not conducive to the normal work of the equipment, and high temperature can even cause the equipment to fail. Therefore, the installation position in the pod is limited, and the in-flight environmental control system cannot directly provide low-temperature air or low-temperature coolant for the mission pod. Therefore, an independent environmental control system needs to be provided for the electronic mission pod. At present, the domestic and foreign research and development of mission pod environmental control systems mainly include two categories of reverse pressure boosting air circulation systems and evaporation circulation systems.

[0003] The reverse pressure boosting air circulation system: the ram air is first cooled by a turbine expansion, the low-temperature air flows through the electronic equipment to absorb heat, the heat-absorbed air is sucked by a compressor, and is discharged out of the mission pod after being boosted in pressure. Due to the suction effect of the compressor, the turbine exhaust pressure is less than the ambient static pressure, so that the effect of increasing the turbine expansion ratio is achieved. The coolant for cooling the electronic equipment is the air cooled by the turbine. The refrigeration capacity of the turbine increases with the increase of the flight Mach number. The core component is the turbine, and the key design is the design and arrangement of the mission pod ram air inlet and the inlet duct. The air flow and pressure directly affect the turbine efficiency.

[0004] The evaporation refrigeration circulation system: the refrigerant is compressed by a compressor, and then evaporated in an evaporator to cool the liquid (coolant), and then the cooled coolant is used to absorb the heat load of the electronic equipment in the electronic mission pod. The condenser uses ram air as a cold source. The coolant for cooling the electronic equipment is the coolant cooled by the evaporator. SUMMARY

[0005] In order to overcome the defects existing in the existing reverse pressure boosting air circulation system and evaporation circulation system, the present application aims to provide a mission pod air-liquid conversion device, which realizes the heat dissipation of the mission pod with a new architecture according to the technical index requirements of the mission pod, and is simpler, more reliable, and lower in cost than the reverse pressure boosting air circulation system and the evaporation circulation system.

[0006] To achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0007] A kind of pod wind liquid conversion device, with built-in form, it is installed in the external pod of aircraft with flight Mach number 0.5~0.8 and flight height 5000~8000 m, and pod wind liquid conversion device includes cabin structure member with bleed air port and exhaust port, cabin structure member is provided with:

[0008] Air-liquid heat exchanger, the cold side import of the air-liquid heat exchanger is communicated with bleed air port, the cold side export of air-liquid heat exchanger is communicated with the external environment of aircraft through exhaust port;

[0009] Liquid filter, the import of the liquid filter is connected with the hot side export of air-liquid heat exchanger, the export of liquid filter is connected with the liquid road export of wind liquid conversion system, and pressure sensor and temperature sensor are also provided between the export of liquid filter and the liquid road export of wind liquid conversion system;

[0010] Expansion type liquid storage tank, the import of the expansion type liquid storage tank is communicated with the liquid road import of wind liquid conversion system, pressure sensor and temperature sensor are also provided between the import of expansion type liquid storage tank and the liquid road import of wind liquid conversion system, and wind liquid conversion system liquid injection port is also provided on expansion type liquid storage tank;

[0011] Micro liquid pump, the micro liquid pump is arranged between the export of expansion type liquid storage tank and the hot side import of air-liquid heat exchanger;

[0012] Wind liquid conversion system data acquisition and host computer communication box, wind liquid conversion system data acquisition and host computer communication box are connected with pressure sensor, temperature sensor and host computer respectively.

[0013] As an option, the cabin structure member is cylindrical, and the bleed air port and the exhaust port on the cabin structure member are respectively communicated with the cold side import and the cold side export of the air-liquid heat exchanger through the stamping air interface hose and the clamp.

[0014] As an option, the air-liquid heat exchanger is one of a tube-shell heat exchanger, a plate-fin heat exchanger or a tube-fin heat exchanger, and the air-liquid heat exchanger includes a stamping air import and export cover, a heat exchanger core assembly and a liquid side import and export cover, the cold side import and the cold side export of the heat exchanger core assembly are respectively communicated with the bleed air port and the exhaust port through the stamping air import and export cover, and the hot side import and the hot side export of the heat exchanger core assembly are respectively connected with the micro liquid pump and the liquid filter through the liquid side import and export cover.

[0015] As an option, the expansion type liquid storage tank is integrated with a pressure sensor mounting seat, a temperature sensor mounting seat, a wind liquid conversion system liquid road export mounting seat, a wind liquid conversion system liquid road import mounting seat, a wind liquid conversion system liquid injection port mounting seat, a micro liquid pump mounting seat and a liquid filter mounting seat.

[0016] As an option, the micro liquid pump is a liquid gear pump driven by a brushless DC motor.

[0017] As an option, the expansion type liquid storage tank is a pull rope type liquid storage tank, comprising an expansion tank shell with a liquid level meter, an expansion tank end cover is installed at one end of the expansion tank shell, a pull rope mounting seat is installed on the outer surface of the expansion tank end cover, a dust cover is assembled on the outer side of the pull rope mounting seat, a pull rope pulley is arranged between the pull rope mounting seat and the dust cover, an expansion spring and an expansion piston are arranged in the inner cavity of the expansion tank shell, one end of the expansion spring is in close contact with the expansion piston, the other end is in close contact with the expansion tank end cover, one end of the liquid level pull rope is connected to the expansion piston, and the other end extends to the liquid level meter through the pull rope pulley and is connected to the liquid level meter display plug.

[0018] As an option:

[0019] The air-liquid heat exchanger and the micro liquid pump are connected through a pump dispersion pipe assembly;

[0020] The air-liquid heat exchanger and the liquid filter are connected through a dispersion filter pipe assembly;

[0021] The liquid filter and the liquid outlet of the air-liquid conversion system are connected through a filter outlet pipe assembly;

[0022] The pump dispersion pipe assembly, the dispersion filter pipe assembly and the filter outlet pipe assembly are all pipe fittings with flange structures at both ends.

[0023] As an option, the liquid filter comprises a liquid filter seat, a liquid inlet and a liquid outlet are opened on the liquid filter seat, a liquid filter differential pressure signaler is installed at one end of the liquid filter seat, a liquid filter shell is installed at the other end of the liquid filter seat, a liquid filter filter core assembly is installed in the inner cavity of the liquid filter shell, a liquid filter bypass valve is arranged at one end of the liquid filter filter core assembly, and a liquid filter maintenance valve and a liquid filter maintenance valve spring are arranged in the liquid filter seat and between the liquid outlet and the liquid filter filter core assembly.

[0024] As an option, the liquid outlet of the air-liquid conversion system, the liquid inlet of the air-liquid conversion system and the liquid injection port of the air-liquid conversion system are fluid connectors.

[0025] As an option, the air-liquid conversion system data acquisition and host computer communication box comprises a CAN interface circuit and is connected with the host computer through a CAN bus.

[0026] Compared with the evaporation refrigeration cycle system and the reverse boost air cycle system in the prior art, the pod air-liquid conversion device directly uses ram air as a cold source to cool down the heat carrier, and then the cooled heat carrier is used to absorb the heat load of the electronic equipment in the electronic pod.

[0027] The expansion type liquid storage tank, the micro liquid pump, the air-liquid heat exchanger, the liquid filter, the temperature sensor, the pressure sensor and the differential pressure sensor are integrated in the limited space, and the data acquisition and host computer communication box is used to perform health management on the pod air-liquid conversion device. The micro liquid pump has a power consumption of 100 W and uses 24 V direct current power supply. The power supply is consistent with the data acquisition, temperature, pressure, differential pressure sensor, data acquisition and host computer communication, and no repeated power transformation is needed.

[0028] The present application has essential differences from the current reverse boost air cycle system and the evaporation cycle system. The present application does not have accessories such as turbine and compressor, directly uses the cold air introduced by the pod ram port to cool down the cooling liquid, although it does not have the ground cooling capacity, the refrigeration performance and the temperature control accuracy are not as good as the evaporation refrigeration cycle system, the use range is limited, but the structure is simple, the cost is low, the reliability is good, and it still has a wide application scene in more pods or airborne electronic equipment. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 The installation space size diagram provided for the pod air-liquid conversion device is shown in the figure.

[0030] In the figure, φA is the maximum outer diameter of the pod, φB is the maximum inner diameter of the pod, L is the maximum axial installation size provided for the pod air-liquid conversion device, 1 is an expansion type liquid storage tank, 2 is a micro liquid pump, 3 is a pump diffuser pipe assembly, 4 is an air-liquid heat exchanger, 5 is a filter pipe assembly, 6 is a liquid filter, 7 is a filter outlet pipe assembly, 8 is a liquid outlet of the air-liquid conversion system, 9 is a temperature sensor, 10 is a pressure sensor, 11 is a liquid inlet of the air-liquid conversion system, 12 is a liquid injection port of the air-liquid conversion system, 13 is a data acquisition and host computer communication box of the air-liquid conversion system, 14 is a ram air interface hose, 15 is a clamp, 16 is a pod body structure, 1601 is an air inlet, and 1602 is an air outlet.

[0031] Figure 2 The present application is a pod air-liquid conversion device composition principle diagram.

[0032] Figure 3Is the core key components of the present invention air-liquid heat exchanger basic composition schematic diagram;

[0033] In the figure: 4001 - stamping air inlet and outlet cover, 4002 - air side sealing pad, 4003 - liquid side inlet and outlet cover, 4004 - heat exchanger core subassembly, 4005 - heat exchanger air side flange;

[0034] Figure 4 Is the basic composition schematic diagram of the expansion type liquid storage tank in the present application;

[0035] In the figure: 1001 - expansion tank shell, 1002 - expansion tank end cover, 1003 - pull rope mounting seat, 1004 - dust cover, 1005 - pull rope pulley, 1006 - liquid level pull rope, 1007 - expansion spring, 1008 - expansion piston, 1009 - liquid level meter compression spring, 1010 - liquid level meter display plug;

[0036] Figure 5 Is the schematic diagram of the micro liquid pump;

[0037] In the figure: 2001 - DC brushless motor, 2002 - gear pump head;

[0038] Figure 6 Is the liquid filter schematic diagram in the present application;

[0039] In the figure: 6001 - liquid filter differential pressure signaler, 6002 - liquid filter seat, 6003 - liquid filter shell, 6004 - hole elastic retainer, 6005 - liquid filter bypass valve, 6006 - liquid filter filter core assembly, 6007 - liquid filter maintenance valve; 6008 - liquid filter maintenance valve spring;

[0040] Figure 7 Is the pump dispersion pipe assembly schematic diagram in the present application;

[0041] In the figure: 3001 - pump connection flange, 3002 - pump dispersion pipe, 3003 - dispersion connection flange;

[0042] Figure 8 Is the dispersion filter pipe assembly schematic diagram in the present application;

[0043] In the figure: 3003 - dispersion connection flange, 5001 - dispersion filter pipe, 5002 - filter connection flange;

[0044] Figure 9 Is the filter outflow pipe assembly schematic diagram in the present application;

[0045] In the figure: 5002 - filter connection flange, 7001 - filter outflow pipe;

[0046] Figure 10 Is the installation bottom plate schematic diagram of the air-liquid heat exchanger and the expansion type liquid storage tank in the present application;

[0047] Figure 11 This is a basic functional block diagram of the data acquisition and host computer communication box of the present invention;

[0048] Figure 12 This is a schematic diagram of the fluid connector selected for the supply / return / injection port in this invention;

[0049] In the diagram: 17 - Supply / Return fluid connector, 18 - Injection fluid connector;

[0050] Figure 13 This is a schematic diagram of the pod air-liquid conversion device assembly in this invention. Detailed Implementation

[0051] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. However, it should not be construed that the scope of the subject matter of the present invention is limited to the following embodiments. All modifications, substitutions and alterations made based on ordinary technical knowledge and common practices in the art without departing from the above-described technical concept of the present invention are included within the scope of the present invention.

[0052] like Figure 1 As shown, this invention presents a pod-based air-liquid conversion device, comprising an expansion-type liquid storage tank 1, a micro liquid pump 2, a pump distribution pipe assembly 3, an air-liquid heat exchanger 4, a distribution filter pipe assembly 5, a liquid filter 6, a filter outlet pipe assembly 7, a liquid outlet of the air-liquid conversion system 8, a temperature sensor 9, a pressure sensor 10, a liquid inlet of the air-liquid conversion system 11, a liquid injection port of the air-liquid conversion system 12, a data acquisition and upper computer communication box for the air-liquid conversion system 13, a ram air interface hose 14, clamps 15, and pod structural components 16. The architecture of this device is the focus of this invention.

[0053] like Figure 1 As shown, the pod-based air-hydraulic conversion device is designed based on the maximum system layout space provided by the pod: pod outer diameter φA, inner diameter φB, axial dimension L. While ensuring requirements for interfaces, performance, strength, and weight, the pod space needs to be fully utilized. Based on the above approach, the functional performance allocation and design of the pod-based air-hydraulic conversion device are carried out. Figure 2 The function and principle of the pod-based air-liquid conversion device were demonstrated.

[0054] 1. First, complete the performance calculation of the air-liquid heat exchanger 4 in the pod air-liquid conversion device. Compare shell-and-tube, plate-fin, and tube-fin structures, and select the plate-fin structure as the preferred option. Complete the performance calculation of the air-liquid heat exchanger 4 under the following conditions:

[0055] Cold edge import condition: flight Mach number is 0.5-0.8; flight height is 5000-8000m. Flight height determines air density, temperature, flight Mach number and the area of nacelle ram air bleed port 1601 windward surface directly affect the cold edge import flow. In addition to the three points, the comprehensive resistance of the heat exchanger cold edge ram inlet and exhaust duct is also a key factor affecting the bleed air flow, which needs to be iteratively calculated.

[0056] Hot edge import condition: the coolant is 65# cooling liquid; the system refrigeration capacity is required to be > 3.6kw; the hot edge flow is 3L / min;

[0057] The hot edge outlet temperature is required to be ≤60℃;

[0058] Through the heat exchanger calculation software, the basic volume of the heat exchanger core is approximately 130mmX90mmX100mm, and the cold and hot edge fin specifications are determined, and the weight of 1.2kg can meet the demand of refrigeration capacity > 3.6kW.

[0059] Combined Figure 1 With the installation space provided by the center nacelle, the basic structure design of the air-liquid heat exchanger 4 is completed, and the specific structure is shown in Figure 3 .

[0060] 2. After the basic structure of the air-liquid heat exchanger 4 is locked, the basic installation form of the air-liquid heat exchanger 4 in the nacelle is established, and then the remaining space is used to design the expansion type liquid tank 1. The following points need to be paid attention to in the design of the expansion type liquid tank 1:

[0061] The expansion type liquid tank 1 is mainly used as a reserve container for providing coolant for the system. Considering various attitudes of the nacelle in the flight envelope, it is ensured that the air-liquid conversion system can always provide cooling liquid for electronic equipment and is not affected by flight attitude.

[0062] In addition to being used as a coolant reserve container, the expansion type liquid tank 1 also needs to integrate as many system schematics as possible Figure 2 Such as liquid supply / return (temperature sensor, pressure sensor) mounting seat, liquid supply / return / charging interface mounting seat, micro liquid pump 2 and filter (liquid filter 6) installation, etc.

[0063] In addition to ensuring the above requirements, it is also necessary to reserve as much liquid capacity as possible in the limited space. Through calculation, the effective liquid capacity of the expansion type liquid tank 1 is 0.85L. Within this capacity range, the liquid filling amount of the expansion type liquid tank 1 needs to have a display function. Finally, the invention adopts a pull rope type capacity display mechanism to meet this demand. The structure of the expansion type liquid tank 1 is shown in Figure 4 .

[0064] 3. According to the requirements of the air-liquid conversion device, the micro liquid pump 2 selects a 24V DC motor driven liquid gear pump, which meets the liquid supply flow: 3L / min, pump pressure rise 1Mpa. Power consumption 100w. And the volume and weight of the micro liquid pump 2 are as small as possible. The micro liquid pump 2 is mainly composed of a DC brushless drive motor and a gear pump body, as shown in Figure 5 .

[0065] 4. The low-temperature refrigerant cooled by the air-liquid heat exchanger 4 needs to be filtered before being provided to the gondola electronic system for cooling, to ensure that the fluid provided to the electronic system for cooling is clean. According to the system flow, working pressure, medium type, system interface, etc., a special liquid filter 6 is designed. The following points need to be noted when designing the liquid filter 6:

[0066] The preliminary requirements of the liquid filter 6 are: filtration accuracy: 10μm, flow: 3L / min, working pressure ≤1Mpa, filtration flow resistance less than 150kpa, and the functions of bypass valve, maintenance shut-off valve and pressure difference signaler need to be integrated in the liquid filter 6. See Figure 6 for details.

[0067] 5. The above-mentioned expansion type liquid tank 1, micro liquid pump 2, air-liquid heat exchanger 4 and liquid filter 6 are connected by pipelines and screws, and the seal between the accessories is achieved by end face sealing with O-rings. The air-liquid heat exchanger 4 and the expansion type liquid tank 1 are designed with a mounting plate to ensure that the air-liquid heat exchanger 4 is firmly installed on the expansion type liquid tank 1. See Figure 7 , 8 , 9 and 10 for details.

[0068] 6. In the gondola air-liquid conversion device, temperature and pressure sensors are arranged for supplying and returning liquid, and a differential pressure sensor is arranged on the filter (liquid filter 6). These sensors are mature products. For the collection of these data signals and the communication of the upper computer, a data collection and upper computer communication box (i.e. air-liquid conversion system data collection and upper computer communication box 13) needs to be designed. See Figure 11 for details. The box has the following functions:

[0069] It has 2-way temperature and 2-way pressure measurement and calculation functions;

[0070] It has 1-way differential pressure signal detection function;

[0071] It has 1-way isolated CAN interface circuit to realize communication with the upper system;

[0072] It has a power-on self-test function;

[0073] It is designed according to the selection of sensors, the communication protocol of the upper computer, the power supply requirements, the electrical interface, etc.

[0074] 7. In this pod-mounted air-liquid conversion device, the supply / return / injection ports are equipped with mature fluid connectors selected based on system medium, flow rate, pressure, flow resistance, and other specifications to solve problems such as quick disassembly and assembly. See details... Figure 12 .

[0075] like Figure 1 The diagram shows the installation constraints imposed on this system by the aircraft electronic pod. This system needs to be implemented and designed within the range where φA is the maximum outer diameter of the pod, φB is the maximum inner diameter of the pod, and L is the maximum axial installation dimension.

[0076] like Figure 2 As shown: Based on the technical requirements of the pod for the air-liquid conversion device, the composition and working principle of the device are defined, the components and accessories of the air-liquid conversion device are sorted out, and the functions, performance and other indicators of the air-liquid conversion device are broken down into the components and accessories.

[0077] like Figure 3 As shown: After analyzing, selecting, and calculating the functions and performance indicators of the air-liquid conversion device down to the heat exchanger, an aluminum alloy plate-fin heat exchanger structure was adopted. Combined with the pod installation interface, the structural design of this heat exchanger was carried out, and the final result was obtained. Figure 3 The air-liquid heat exchanger 4 includes a ram air inlet / outlet shroud 4001, an air-side sealing gasket 4002, a liquid-side inlet / outlet shroud 4003, a heat exchanger core assembly 4004, and a heat exchanger air-side flange 4005. The cold-side inlet and outlet of the heat exchanger core assembly 4004 are connected to the priming port 1601 and exhaust port 1602 respectively via the ram air inlet / outlet shroud 4001. The hot-side inlet and outlet of the heat exchanger core assembly 4004 are connected to the micro liquid pump 2 and liquid filter 6 respectively via the liquid-side inlet / outlet shroud 4003. The ram air inlet / outlet shroud 4001 is made of carbon fiber composite material and is connected to the heat exchanger air-side flange 4005 with screws, with the air-side sealing gasket 4002 sandwiched in between. This isolates the air entering the heat exchanger cavity from the pod, preventing moisture-laden air from entering the pod and affecting the operation of other electronic components.

[0078] like Figure 4As shown: after the structure of the air-liquid heat exchanger 4 is basically locked, the remaining space of the pod is used for the structural design of the expansion type liquid storage tank 1. The expansion type liquid storage tank 1 includes an expansion tank shell 1001 with a liquid level gauge, one end of the expansion tank shell 1001 is provided with an expansion tank end cover 1002, the outer surface of the expansion tank end cover 1002 is provided with a pull rope mounting seat 1003, the outer side of the pull rope mounting seat 1003 is provided with a dust cover 1004, a pull rope pulley 1005 is arranged between the pull rope mounting seat 1003 and the dust cover 1004, the inner cavity of the expansion tank shell 1001 is provided with an expansion spring 1007 and an expansion piston 1008, one end of the expansion spring 1007 is in close contact with the expansion piston 1008, and the other end is in close contact with the expansion tank end cover 1002, one end of the liquid level pull rope 1006 is connected to the expansion piston 1008, and the other end extends to the liquid level gauge through the pull rope pulley 1005 and is connected to the liquid level gauge display plug 1010, and the liquid level gauge is designed with a liquid level gauge compression spring 1009 matched with the liquid level gauge display plug 1010. In order to ensure that the pod can supply liquid in various attitudes within the flight envelope, the available liquid must be immersed in the pump suction port to ensure that the micro liquid pump 2 can always suck liquid in the working state, so the expansion piston 1008 and the expansion spring 1007 are used to press the liquid in the tank into the pump suction port, through the maximum structural design, the inner diameter of the expansion type liquid storage tank 1 is φ85mm, the axial sliding distance of the expansion piston 1008 is 150.5mm, and finally the effective liquid volume of the expansion type liquid storage tank 1 is 0.85L. According to Figure 2 the system block diagram, the installation structure of the device such as the liquid supply / return port, the liquid filter 6, the micro liquid pump 2 and the air-liquid heat exchanger 4 is integrated on the expansion type liquid storage tank 1.

[0079] As shown in Figure 5 , the micro liquid pump 2 mainly includes a direct current brushless motor 2001 and a gear pump head 2002, according to Figure 2 the functional block diagram decomposition index requirement, a mature pump product is selected to meet the device liquid supply pressure, flow and power consumption index requirements.

[0080] As shown in Figure 6As shown, before the cooled refrigerant is used by the pod electronic system, it needs to be filtered to ensure that the refrigerant does not contaminate other accessories in the electronic system. Therefore, a liquid filter 6 is designed. The liquid filter 6 includes a liquid filter seat 6002, which has a liquid inlet and a liquid outlet. A liquid filter differential pressure signal 6001 is installed at one end of the liquid filter seat 6002, and a liquid filter housing 6003 is installed at the other end. A liquid filter element assembly 6006 is installed in the inner cavity of the liquid filter housing 6003. One end of the liquid filter element assembly 6006 is a liquid filter bypass valve 6005. A liquid filter maintenance valve 6007 and a liquid filter maintenance valve spring 6008 are provided inside the liquid filter seat 6002 and between the liquid outlet and the liquid filter element assembly 6006. The liquid filter element assembly 6006 is a key component of the liquid filter 6, employing a stainless steel wire mesh corrugated filter structure. After this component is installed in the liquid filter 6, it presses down the liquid filter maintenance valve 6007, connecting the liquid outlet to the interior of the liquid filter 6. The inlet liquid flows from the inside to the outside through the liquid filter element assembly 6006. Figure 6 The liquid is filtered (in the direction of the middle arrow), and contaminants remain inside the filter element of the liquid filter element assembly 6006. The filtered clean liquid flows out of the liquid filter 6 through the liquid filter maintenance valve 6007. When the capacity of the filter element reaches a certain level, the pressure difference before and after the liquid filter element assembly 6006 will increase. When the pressure difference signal of the liquid filter differential signal device 6001 reaches the alarm threshold, an alarm signal is output to remind the user to maintain the liquid filter element assembly 6006. After disassembling the liquid filter element assembly 6006, the liquid filter maintenance valve 6007 slides axially under the elastic force of the liquid filter maintenance valve spring 6008, blocking the liquid outlet and preventing liquid from flowing out of the air-liquid conversion device pipeline and contaminating the pod environment.

[0081] like Figures 7 to 10 The diagram shows the system piping and mounting supports connecting the various accessories of this invention. The flange structures in the pump distribution pipe assembly 3, the filter distribution pipe assembly 5, and the filter outlet pipe assembly 7 are designed to be as standardized as possible to avoid component variations and reduce the types of sealing rings. Figure 7 In the middle, the pump distribution pipe assembly 3 includes a pump connection flange 3001, a pump distribution pipe 3002, and a distribution connection flange 3003. Figure 8 In the middle, the diffuser assembly 5 includes diffuser connection flange 3003, diffuser pipe 5001 and filter connection flange 5002. Figure 9 In the middle, the filter outlet pipe assembly 7 includes a filter connection flange 5002 and a filter outlet pipe 7001.

[0082] like Figure 11It is the basic function block diagram of data acquisition and host computer communication box (air-liquid conversion system data acquisition and host computer communication box 13), which is composed of pressure sensor 10, temperature sensor 9, liquid filter pressure difference signaler 6001, control box and software solidified in the control box.

[0083] The power supply circuit is used for converting input +12VDC into +5VDC power supply voltage for supplying components such as the single-chip microcomputer box CAN transceiver, and the rectifier diode IN4001 is used in the power supply circuit design to realize reverse connection protection design; in the EMI design aspect, the LC filter circuit composed of inductance and capacitance can effectively filter out the interference on the power line and reduce the electromagnetic interference generated in the conduction mode.

[0084] The pressure sensor adopts an output type pressure sensor 10, and the voltage signal (0.5-4.5V) is converted into a digital signal by an A / D converter on the single-chip microcomputer in the box, and the pressure value is calculated by the single-chip microcomputer;

[0085] The temperature sensor adopts a PT1000 platinum resistance temperature sensor 9, and the resistance signal of the external PT1000 temperature sensor is processed into a voltage signal by the platinum resistance conditioning circuit in the box, and the digital signal is converted by the A / D converter on the single-chip microcomputer, and the temperature value is calculated by the single-chip microcomputer;

[0086] The liquid filter pressure difference signaler 6001 is used to sense the inner and outer pressures of the liquid filter 6, and when the inner and outer pressure difference of the liquid filter 6 reaches a certain value, an alarm signal (+5V voltage signal) is output to the I / O pin of the single-chip microcomputer.

[0087] The pressure value signal, temperature value signal and pressure difference signaler signal are checked in the single-chip microcomputer, and finally the pressure value data, temperature value data, state information, version information and the like are packaged and sent to the host computer through the CAN bus according to the communication protocol requirements.

[0088] Figure 12 It is a mature fluid connector selected according to the system fluid medium, flow, flow resistance, working pressure and the like in the application, which comprises a supply / return liquid fluid connector 17 and a liquid injection fluid connector 18, and is installed in the loop of the air-liquid conversion device of the suspended pod, and has the functions of supplying liquid to the outside of the system, returning liquid and injecting liquid to the air-liquid conversion device of the suspended pod.

[0089] Among them, the supply / return liquid fluid connector 17 adopts a TSA5 socket, and the liquid injection fluid connector 18 adopts a TSA3 socket.

[0090] Figure 13It is the final delivery of the invention of the nacelle wind liquid conversion device integration perspective view. Using the aircraft flight process flight Mach number 0.5~0.8, flight height 5000~8000m and through the ram air inlet 1601 on the cabin body structure 16 to introduce a certain flow of low temperature air, through the nacelle wind liquid conversion device to extract the cold quantity of low temperature air, the nacelle task system is cooled. The maximum diameter of the nacelle wind liquid conversion device φA (not including the air cat ear of the cabin body structure 16), the effective axial length L, the refrigerating capacity is 3.6kW, under the severe condition, the nacelle task system is provided with cooling liquid temperature ≤60℃, liquid flow 3L / min, liquid pressure 0.6Mpa, abnormal condition 1Mpa.

[0091] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A pod-based air-liquid conversion device, characterized in that: It is installed in an external pod of an aircraft with a flight Mach number of 0.5 to 0.8 and a flight altitude of 5000 to 8000 m in a built-in form, and the pod's air-liquid conversion device includes a cabin structure component (16) with an air intake (1601) and an exhaust (1602), and the cabin structure component (16) is provided with: Air-liquid heat exchanger (4), the cold side inlet of the air-liquid heat exchanger (4) is connected to the bleed air port (1601), and the cold side outlet of the air-liquid heat exchanger (4) is connected to the external environment of the aircraft through the exhaust port (1602). Liquid filter (6), the inlet of the liquid filter (6) is connected to the hot side outlet of the air-liquid heat exchanger (4), the outlet of the liquid filter (6) is connected to the liquid outlet (8) of the air-liquid conversion system, and a pressure sensor and a temperature sensor are also provided between the outlet of the liquid filter (6) and the liquid outlet (8) of the air-liquid conversion system. An expansion tank (1) is provided with its inlet connected to the inlet (11) of the air-liquid conversion system. A pressure sensor and a temperature sensor are also provided between the inlet of the expansion tank (1) and the inlet (11) of the air-liquid conversion system. An air-liquid conversion system injection port (12) is also provided on the expansion tank (1). A micro liquid pump (2) is installed between the outlet of the expansion tank (1) and the hot side inlet of the air-liquid heat exchanger (4); The air-liquid conversion system data acquisition and host computer communication box (13) is connected to the pressure sensor, temperature sensor and host computer respectively; The air-liquid heat exchanger (4) is one of a shell-and-tube heat exchanger, a plate-fin heat exchanger, or a tube-fin heat exchanger. The air-liquid heat exchanger (4) includes a pressurized air inlet and outlet hood (4001), a heat exchanger core assembly (4004), and a liquid side inlet and outlet hood (4003). The cold side inlet and cold side outlet of the heat exchanger core assembly (4004) are connected to the air intake port (1601) and the exhaust port (1602) respectively through the pressurized air inlet and outlet hood (4001). The hot side inlet and hot side outlet of the heat exchanger core assembly (4004) are connected to the micro liquid pump (2) and the liquid filter (6) respectively through the liquid side inlet and outlet hood (4003). The expansion tank (1) is a pull-rope type tank, including an expansion tank shell (1001) with a level gauge. An expansion tank end cap (1002) is installed at one end of the expansion tank shell (1001). A pull-rope mounting seat (1003) is installed on the outer surface of the expansion tank end cap (1002). A dust cover (1004) is fitted on the outside of the pull-rope mounting seat (1003). A pull-rope pulley is provided between the pull-rope mounting seat (1003) and the dust cover (1004). 1005), An expansion spring (1007) and an expansion piston (1008) are provided in the inner cavity of the expansion tank shell (1001). One end of the expansion spring (1007) is in close contact with the expansion piston (1008), and the other end is in close contact with the expansion tank end cover (1002). One end of the liquid level pull rope (1006) is connected to the expansion piston (1008), and the other end extends through the pull rope pulley (1005) into the liquid level gauge and is connected to the liquid level gauge display plug (1010).

2. The pod-based air-liquid conversion device according to claim 1, characterized in that: The cabin structure component (16) is cylindrical. The air intake port (1601) and exhaust port (1602) on the cabin structure component (16) are connected to the cold side inlet and cold side outlet of the air-liquid heat exchanger (4) via the pressurized air interface hose (14) and clamp (15), respectively.

3. The pod-based air-liquid conversion device according to claim 1, characterized in that: The expansion tank (1) integrates a pressure sensor mounting base, a temperature sensor mounting base, a liquid outlet mounting base for the air-liquid conversion system, a liquid inlet mounting base for the air-liquid conversion system, a liquid injection port mounting base for the air-liquid conversion system, a micro liquid pump mounting base, and a liquid filter mounting base.

4. The pod-based air-liquid conversion device according to claim 1, characterized in that: The micro liquid pump (2) is a liquid gear pump driven by a brushless DC motor.

5. The pod-based air-liquid conversion device according to claim 1, characterized in that: The air-liquid heat exchanger (4) and the micro liquid pump (2) are connected by a pump distribution assembly (3); The air-liquid heat exchanger (4) and the liquid filter (6) are connected by a diffuser tube assembly (5); The liquid filter (6) and the liquid outlet (8) of the air-liquid conversion system are connected by a filter outlet pipe assembly (7); The pump distribution pipe assembly (3), the filter pipe assembly (5), and the filter outlet pipe assembly (7) are all pipe fittings with flange structures at both ends.

6. The pod-based air-liquid conversion device according to claim 1, characterized in that: The liquid filter (6) includes a liquid filter seat (6002), which has a liquid inlet and a liquid outlet. A liquid filter differential pressure signal device (6001) is installed at one end of the liquid filter seat (6002), and a liquid filter housing (6003) is installed at the other end of the liquid filter seat (6002). A liquid filter element assembly (6006) is installed in the inner cavity of the liquid filter housing (6003). One end of the liquid filter element assembly (6006) is a liquid filter bypass valve (6005). A liquid filter maintenance valve (6007) and a liquid filter maintenance valve spring (6008) are provided inside the liquid filter seat (6002) and between the liquid outlet and the liquid filter element assembly (6006).

7. The pod-based air-liquid conversion device according to claim 1, characterized in that: The fluid outlet (8), fluid inlet (11), and fluid injection port (12) of the air-liquid conversion system are fluid connectors.

8. The pod-based air-liquid conversion device according to claim 1, characterized in that: The data acquisition and host computer communication box (13) of the air-liquid conversion system includes a CAN interface circuit and is connected to the host computer via a CAN bus.

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