Fairing environment control device and method based on mooring platform

Abstract

The invention discloses a fairing environment control device and method based on a mooring platform, and belongs to the control technology, a fairing comprises a pressure maintaining system, a ventilation system and a control system, a temperature sensor and a pressure sensor are arranged in the fairing, a plurality of sets of inlet fans and outlet fans are arranged on a fairing body, and the temperature sensor and the pressure sensor are arranged in the fairing body. The control system is controlled by the pressure maintaining system and / or the ventilation system, the control system collects temperature and pressure data to coordinately control the pressure maintaining system and the ventilation system, the pressure maintaining system enables the inside and the outside of the fairing to maintain positive pressure difference all the time, and the ventilation system maintains real-time heat exchange to control the temperature in the fairing while maintaining pressure. The fairing keeps proper temperature and humidity, dehumidification can be achieved before starting, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to a control technology, which is a fairing environment control device and method based on a tethered platform. Background Art

[0002] The tethered balloon-borne radar system relies on the buoyancy of the tethered balloon to lift the radar antenna to a certain height for operation. The radar antenna is installed in the fairing of the tethered balloon platform (referred to as the tethered platform). In the working state, the heat generated by the radar electronic equipment will be discharged into the fairing. As the heat accumulates, the temperature inside the fairing will gradually increase, and eventually the electronic equipment will be damaged due to excessive temperature rise. Therefore, for the tethered balloon-borne radar system, fairing environmental control (referred to as environmental control) is the key content of structural design. Generally speaking, the fairing environmental control design mainly includes two aspects: one is to control the temperature inside the fairing within a reasonable range, as mentioned above, to avoid excessive temperature rise causing equipment damage, and the other is to control the humidity within a reasonable range to avoid excessive humidity causing equipment corrosion and short circuit.

[0003] A mobile balloon-borne radar has installed high heat consumption equipment such as transmitters and power supplies in the fairing. According to the radar operating environment conditions and thermal calculation simulation, the internal temperature of the fairing can reach up to 62°C without taking heat dissipation measures, and the equipment cannot work normally. For this reason, the air inlet and outlet of the transmitter with the highest heat consumption are both outside the fairing, that is, the air enters from outside the fairing, and the heat is discharged to the outside of the fairing after the thermal cycle, and the fairing does not take temperature control measures. In terms of humidity control, due to the pressure maintenance requirements of the fairing, there is direct air exchange with the outside world, so the humidity control requirements cannot be guaranteed. Such a design has many disadvantages that need to be overcome urgently. Summary of the invention

[0004] Aiming at the technical defects of temperature and humidity control inside the fairing of a new type of mobile balloon-borne radar system, the present invention proposes a set of solutions and methods for improving the comprehensive environmental control technology of the fairing system, aiming to improve the climate adaptability of the radar in this field, shorten the startup time, enhance the adaptability of the position, and achieve the purpose of improving the reliability of the system.

[0005] In order to achieve the above invention objectives, the temperature and humidity conditions inside and outside the fairing and the heat transfer path of the system are analyzed, and technical solutions are designed from the aspects of the fairing integrated ventilation and pressure maintenance system design, large air filter room, anchored follow-up fairing ventilation and dehumidification, and array surface efficient air cooling. The specific technical solutions are as follows: A fairing environmental control device based on a moored platform, the fairing comprising a pressure maintaining system, a ventilation system and a control system, a temperature sensor and a pressure sensor are arranged inside the fairing, a plurality of groups of inlet fans and outlet fans are arranged on the fairing body, and the fans are controlled by the pressure maintaining system and / or the ventilation system, the control system collects temperature and pressure data to coordinately control the pressure maintaining system and the ventilation system, the pressure maintaining system always maintains a positive pressure difference inside and outside the fairing, and the ventilation system maintains real-time heat exchange to control the temperature inside the fairing while maintaining pressure.

[0006] Furthermore, the control logic of the control system includes: (1) during the initial pressure maintenance, the inlet fan is turned on and the outlet fan is turned off until the required pressure inside the hood is reached; (2) when the hood is over-pressured and the temperature is too high, the inlet fan and the outlet fan simultaneously increase the air volume and work, and the fan speed is controlled so that the inlet fan air volume is less than the outlet fan air volume; (3) when the hood is under-pressured and the temperature is too high, the inlet fan and the outlet fan simultaneously increase the air volume and work, and the fan speed is controlled so that the inlet fan air volume is greater than the outlet fan air volume; (4) when the hood is over-pressured and the temperature is normal, the inlet fan and the outlet fan simultaneously reduce the air volume and work, and the fan speed is controlled so that the inlet fan air volume is less than the outlet fan air volume; (5) when the hood is under-pressured and the temperature is too high, the inlet fan and the outlet fan simultaneously reduce the air volume and work, and the fan speed is controlled so that the inlet fan air volume is greater than the outlet fan air volume; (6) when the pressure inside the hood is normal and the temperature is too high, the inlet fan and the outlet fan air volume increase by the same amount at the same time.

[0007] Furthermore, the front end of the inlet fan is connected to an air filter chamber, which includes a plurality of Gore membrane filter groups for filtering water vapor and impurities entering the fairing.

[0008] Furthermore, the air filter chamber is a cubic frame, and a plurality of Gore membrane filter modules are installed on the six sides of the frame. One side of the frame is an air outlet, which is connected to the front end of the inlet fan through an air duct.

[0009] Furthermore, the mooring platform is connected to a slewing platform of the anchored vehicle, and the slewing platform is installed on a fixed chassis via a slewing shaft.

[0010] Furthermore, a dehumidifier is installed on the extension arm of the mooring rotating platform, which rotates synchronously with the moored platform with the wind, and the air outlet of the dehumidifier can be connected to the front end of the imported fan through an air duct.

[0011] Furthermore, a heat exchange device is installed in the fairing, including a heat sink, a static pressure chamber and a fan. A number of air-cooling components are installed on the heat dissipation chamber. The air-cooling components include a hollow ventilation chamber. The heat of the components is transferred to the cooling fins in the ventilation chamber through the uniform temperature heat dissipation plate, and then brought into the static pressure chamber by the circulating air. The heat is then discharged into the fairing by the fans on both sides of the static pressure chamber.

[0012] A fairing environment control method based on a tethered platform, using the aforementioned fairing environment control device based on a tethered platform, the method comprising: 1) When the moored platform is anchored, remove the ventilation hose at one end of the air filter chamber, add an extension pipe to connect it to the ventilation outlet of the dehumidifier, turn on the dehumidifier, and ventilate and dehumidify for several hours; 2) Re-switch the input end of the ventilation hose to the output end of the air filter chamber, lock the clamp, turn on the control system, and the initial pressure-maintaining system controls the inlet fan to turn on and the outlet fan to turn off until the required pressure inside the hood is reached and the moored platform is lifted off; 3) The mission system equipment is turned on, the components and power supply start working, the heat of the chip is transferred to the fins of the component ventilation cavity, enters the static pressure cavity under the action of the fan, and finally discharged into the fairing; 4) The pressure-maintaining system and ventilation system work continuously to control the pressure and temperature inside the fairing to meet the set values; 5) When the fairing pressure is too high, the outlet fan air volume is greater than the inlet fan air volume, and vice versa when the pressure is too low; when the temperature is too high, the inlet fan and outlet fan air volumes will increase until the temperature meets the requirements; pressure control takes precedence over temperature control.

[0013] Aiming at the difficulties in the environmental control design of the mobile balloon-borne radar fairing system, the present invention proposes an environmental control solution for the fairing system under harsh environmental conditions from the perspective of comprehensive temperature and humidity control, thereby improving the system's position adaptability and reliability, and has the following specific beneficial effects: 1) The fairing maintains a suitable temperature. In the lift-off working state, as the electronic equipment continues to work and generate heat, the temperature inside the fairing will gradually increase, causing the radar to be unable to continue working. The present invention integrates the ventilation system and the pressure maintenance system of the fairing into one design, and transmits the fairing environmental parameters to the on-ball pressure adjustment control system through temperature and pressure sensors. According to the control logic, the fairing pressure maintenance is not affected in the ventilation state, and the pressure maintenance system will not cause the temperature inside the cover to rise when it is working. When both need to be taken into account at the same time, from a safety perspective, the fairing is quickly pressurized and then heated, so that the internal environment of the fairing always maintains a suitable pressure and temperature.

[0014] 2) The fairing maintains appropriate humidity. When the moored platform is in working condition, a large amount of salt spray and water vapor from the coast enters the fairing under the action of the fairing ventilation system, causing corrosion of electronic equipment and electrical failures. When the moored platform is in anchored condition, condensed water may exist in the fairing due to the temperature difference between day and night. The present invention designs a large air filter chamber to be installed at the front end of the fairing air inlet. The air entering the fairing is first dried and filtered, which greatly reduces the air humidity in the fairing. By configuring a high-power anchoring vehicle follow-up ventilation and dehumidifier, the fairing is effectively dehumidified before taking off, shortening the radar startup time. In view of the characteristics of the moored platform rotating with the wind, the dehumidifier is installed at the tail of the moored platform revolving platform. When operating, the staff can synchronously follow the moored platform to rotate with the wind, eliminating the influence of changes in wind speed and direction on ventilation and dehumidification, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the mooring platform; Figure 2 It is a large air filter room; Figure 3 It is a modular Gore membrane filter; Figure 4 This is a schematic diagram of air cooling of the array surface; Figure 5 It is an air-cooled component; Among them, 1 is the fairing, 2 is the air filter chamber, 3 is the dehumidifier, 4 is the rotating shaft, 5 is the rotating platform, 6 is the fixed chassis, 7 is the frame, 8 is the filter module, 9 is the air outlet, 10 is the Gore membrane, 11 is the surrounding frame, 12 is the captive screw, 13 is the fin, 14 is the ventilation chamber, 15 is the fan, 16 is the static pressure chamber, 17 is the air inlet, and 18 is the air outlet. DETAILED DESCRIPTION

[0016] The technical solution of the present invention is further explained below in conjunction with the accompanying drawings.

[0017] like Figure 1 As shown, a fairing environmental control device based on a tethered platform, the fairing 1 includes a pressure maintaining system, a ventilation system and a control system, a temperature sensor and a pressure sensor are arranged inside the fairing 1, and a plurality of groups of inlet fans and outlet fans are arranged on the cover body, which are controlled by the pressure maintaining system and / or the ventilation system. The control system collects temperature and pressure data to coordinately control the pressure maintaining system and the ventilation system, the pressure maintaining system always maintains a positive pressure difference inside and outside the cover, and the ventilation system maintains real-time heat exchange to control the temperature inside the fairing 1 while maintaining pressure.

[0018] The control logic of the control system includes: (1) during the initial pressure maintenance, the inlet fan is turned on and the outlet fan is turned off until the required pressure in the hood is reached; (2) when the hood is over-pressured and the temperature is too high, the inlet fan and the outlet fan simultaneously increase the air volume and work, and the fan speed is controlled so that the inlet fan air volume is less than the outlet fan air volume; (3) when the hood is under-pressured and the temperature is too high, the inlet fan and the outlet fan simultaneously increase the air volume and work, and the fan speed is controlled so that the inlet fan air volume is greater than the outlet fan air volume; (4) when the hood is over-pressured and the temperature is normal, the inlet fan and the outlet fan simultaneously reduce the air volume and work, and the fan speed is controlled so that the inlet fan air volume is less than the outlet fan air volume; (5) when the hood is under-pressured and the temperature is too high, the inlet fan and the outlet fan simultaneously reduce the air volume and work, and the fan speed is controlled so that the inlet fan air volume is greater than the outlet fan air volume; (6) when the pressure in the hood is normal and the temperature is too high, the inlet fan and the outlet fan air volume are increased by the same amount at the same time.

[0019] like Figure 2 As shown, the front end of the inlet fan is connected to the air filter chamber 2, and the air filter chamber 2 includes a plurality of Gore membrane filter groups to filter the water vapor and impurities entering the fairing 1.

[0020] like Figure 3 As shown, the air filter chamber 2 is a cubic frame 7, and a plurality of Gore membrane 10 filter modules 8 are installed on the six sides of the frame 7. One side of the frame 7 is an air outlet 9, which is connected to the front end of the inlet fan through an air duct. The Gore membrane filter module 8 includes a Gore membrane and a surrounding frame 11, which is installed on the cubic frame 7 by self-loose screws 12.

[0021] like Figure 1 As shown, the mooring platform is connected to the revolving platform 5 of the anchored vehicle, and the revolving platform 5 is installed on the fixed chassis 6 through the revolving shaft 4. The dehumidifier 3 is installed on the extension arm of the mooring revolving platform 5, which rotates synchronously with the mooring platform with the wind, and the air outlet 9 of the dehumidifier 3 can be connected to the front end of the inlet fan through the air duct.

[0022] like Figure 4 , Figure 5 As shown, a heat exchange device is installed in the fairing 1, including a heat sink, a static pressure chamber 16 and a fan 15. A number of air-cooling components are installed on the heat dissipation chamber. The air-cooling components include a hollow ventilation chamber 14. The heat of the components is transferred to the heat dissipation fins 13 in the ventilation chamber 14 through a uniform temperature heat dissipation plate, and then brought into the static pressure chamber 16 by circulating wind, and then the fans 15 on both sides of the static pressure chamber 16 discharge the heat into the fairing 1.

[0023] When using, the usage is as follows: 1) When the moored platform is in the anchored state, remove the ventilation hose at one end of the air filter chamber 2, add an extension pipe to connect it to the ventilation outlet of the dehumidifier 3, turn on the dehumidifier 3, and ventilate and dehumidify for several hours; 2) Re-switch the input end of the ventilation hose to the output end of the air filter chamber 2, lock the clamp, turn on the control system, and the initial pressure-maintaining system controls the inlet fan to turn on and the outlet fan to turn off until the required pressure inside the hood is reached and the moored platform is lifted off; 3) The mission system equipment is turned on, the components and power supply start working, and the heat of the chip is transferred to the fins 13 of the component ventilation cavity 14, and enters the static pressure cavity 16 under the action of the fan, and finally discharged into the fairing 1; 4) The pressure-maintaining system and ventilation system continue to work to control the pressure and temperature inside the fairing 1 to meet the set values; 5) When the pressure of fairing 1 is too high, the air volume of the outlet fan is greater than that of the inlet fan, and vice versa when the pressure is too low; when the temperature is too high, the air volumes of the inlet fan and the outlet fan increase until the temperature meets the requirements; pressure control takes precedence over temperature control.

[0024] Taking a mobile balloon-borne radar system from an anchored state to a lifted-off state as an example, the technical solution of the present invention is explained, and the specific implementation steps and methods are as follows: 1) When the moored platform is anchored, remove the ventilation hose at one end of the air filter chamber 2, add an extension pipe to connect it to the ventilation outlet of the dehumidifier 3, turn on the dehumidifier 3, and ventilate and dehumidify for 1 to 2 hours; 2) Re-switch the input end of the ventilation hose to the output end of the air filter chamber 2, lock the clamp, start the ball pressure regulating system, and lift the moored platform into the air; 3) The mission system equipment is turned on, the components and power supply start working, and the heat of the chip is transferred to the fins 13 of the component ventilation cavity 14, and enters the array static pressure cavity 16 under the action of the array fan, and finally discharged into the fairing 1.

[0025] 4) The pressure-maintaining system of fairing 1 starts working. After pressure regulation is completed, the ventilation system starts working. According to the external temperature conditions, the temperature inside fairing 1 is finally controlled to be no greater than 43°C; 5) When the pressure and temperature inside the fairing 1 do not meet the requirements, the pressure regulating system controls the air volume of the inlet and outlet fans of the fairing 1. When the pressure is too high, the air volume of the outlet fan is less than the air volume of the inlet fan, and vice versa when the pressure is too low.

[0026] 6) When the pressure meets the requirement, the temperature sensor in the fairing 1 continues to detect the internal temperature. If the temperature is greater than 43°C, the inlet and outlet fans continue to work with equal air volume until the temperature meets the requirement.

[0027] 7) The working mode of the air filter chamber 2 is passive. When the fan of the fairing 1 is working, a negative pressure is formed inside the filter chamber relative to the outside world. The outside air passes through the Gore membrane filter into the filter chamber and then enters the fairing 1 to complete the filtration of external water vapor and impurities.

Claims

1. A fairing environmental control device based on a tethered platform, characterized in that: The fairing includes a pressure maintaining system, a ventilation system and a control system. A temperature sensor and a pressure sensor are arranged inside the fairing. A plurality of groups of inlet fans and outlet fans are arranged on the cover body and are controlled by the pressure maintaining system and / or the ventilation system. The control system collects temperature and pressure data and coordinates and controls the pressure maintaining system and the ventilation system. The pressure maintaining system always maintains a positive pressure difference inside and outside the cover. The ventilation system maintains real-time heat exchange to control the temperature inside the fairing while maintaining pressure.

2. According to the fairing environmental control device based on the moored platform according to claim 1, it is characterized in that: The control logic of the control system includes: (1) during the initial pressure maintenance, the inlet fan is turned on and the outlet fan is turned off until the required pressure in the hood is reached; (2) when the hood is over-pressured and the temperature is too high, the inlet fan and the outlet fan simultaneously increase the air volume and work, and the fan speed is controlled so that the inlet fan air volume is less than the outlet fan air volume; (3) when the hood is under-pressured and the temperature is too high, the inlet fan and the outlet fan simultaneously increase the air volume and work, and the fan speed is controlled so that the inlet fan air volume is greater than the outlet fan air volume; (4) when the hood is over-pressured and the temperature is normal, the inlet fan and the outlet fan simultaneously reduce the air volume and work, and the fan speed is controlled so that the inlet fan air volume is less than the outlet fan air volume; (5) when the hood is under-pressured and the temperature is too high, the inlet fan and the outlet fan simultaneously reduce the air volume and work, and the fan speed is controlled so that the inlet fan air volume is greater than the outlet fan air volume; (6) when the pressure in the hood is normal and the temperature is too high, the inlet fan and the outlet fan air volume are increased by the same amount at the same time.

3. The fairing environmental control device based on the moored platform according to claim 1, characterized in that: The front end of the inlet fan is connected to an air filter chamber, which includes a plurality of Gore membrane filter groups for filtering water vapor and impurities entering the fairing.

4. The fairing environmental control device based on the moored platform according to claim 3 is characterized in that: The air filter chamber is a cubic frame, and a number of Gore membrane filter modules are installed on the six sides of the frame. One side of the frame is an air outlet, which is connected to the front end of the inlet fan through an air duct.

5. The fairing environmental control device based on the moored platform according to claim 1 is characterized in that: The mooring platform is connected to the slewing platform of the anchored vehicle, and the slewing platform is installed on the fixed chassis through a slewing shaft.

6. The fairing environmental control device based on the moored platform according to claim 5, characterized in that: A dehumidifier is installed on the extension arm of the rotary platform, and synchronously follows the moored platform to rotate with the wind. The air outlet of the dehumidifier can be connected to the front end of the imported fan through an air duct.

7. The fairing environmental control device based on the moored platform according to claim 1, characterized in that: The heat exchange device is installed in the fairing, including a heat sink, a static pressure chamber and a fan. A number of air-cooling components are installed on the heat dissipation chamber. The air-cooling components include a hollow ventilation chamber. The heat of the components is transferred to the heat dissipation fins in the ventilation chamber through the temperature-averaging heat sink plate, and then brought into the static pressure chamber by the circulating air. The fans on both sides of the static pressure chamber discharge the heat into the fairing.

8. A fairing environmental control method based on a tethered platform, characterized in that: Using the fairing environmental control device based on a tethered platform according to any one of claims 1 to 7, the method comprises: 1) When the moored platform is anchored, remove the ventilation hose at one end of the air filter chamber, add an extension pipe to connect it to the ventilation outlet of the dehumidifier, turn on the dehumidifier, and ventilate and dehumidify for several hours; 2) Re-switch the input end of the ventilation hose to the output end of the air filter chamber, lock the clamp, turn on the control system, and the initial pressure-maintaining system controls the inlet fan to turn on and the outlet fan to turn off until the required pressure inside the hood is reached and the moored platform is lifted off; 3) The mission system equipment is turned on, the components and power supply start working, the heat of the chip is transferred to the fins of the component ventilation cavity, enters the static pressure cavity under the action of the fan, and finally discharged into the fairing; 4) The pressure-maintaining system and ventilation system work continuously to control the pressure and temperature inside the fairing to meet the set values; 5) When the fairing pressure is too high, the outlet fan air volume is smaller than the inlet fan air volume, and vice versa when the pressure is too low; when the temperature is too high, the inlet fan and outlet fan air volumes will increase until the temperature meets the requirements; pressure control takes precedence over temperature control.

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