A plateau environment simulation cabin and a method for using the same

Abstract

The application relates to a highland environment simulation cabin and a use method thereof. The simulation cabin comprises a cabin body, a temperature and humidity sensor and a pressure sensor are arranged in the cabin body, a vacuum pump is arranged in the cabin body, an air inlet of the vacuum pump is communicated with the inside of the cabin body, a first-stage temperature and humidity adjusting unit, the first-stage temperature and humidity adjusting unit comprises a cabinet, the cabinet is communicated with the cabin body, a circulating fan and an evaporator, the circulating fan and the evaporator are located in the cabinet, the cabinet is communicated with the cabin body, a condenser is located outside the cabin body and communicated with the cabinet, a cooling tower is located outside the cabin body and communicated with the condenser, a second-stage temperature and humidity adjusting unit, the second-stage temperature and humidity adjusting unit is opened after the humidity in the cabin body is reduced to a certain degree, a PID control system, and the PID control system is electrically connected with the temperature and humidity adjusting unit.

Description

Technical Field

[0001] This invention belongs to the field of plateau environment simulation technology, specifically relating to a plateau environment simulation chamber and its usage method. Background Technology

[0002] Plateaus refer to areas with an altitude of over 1,000 meters and a relative height of over 500 meters. They are vast areas with relatively flat or undulating terrain. Plateau environments are characterized by low air pressure, low temperature, and low humidity, and are accompanied by extreme weather. Numerous research projects have been developed for plateau environments, with plateau environment simulation being one of them.

[0003] High-altitude environment simulation chambers simulate the low-pressure, low-humidity, and low-temperature climate characteristics of high-altitude areas within a specific space. They are often used for related medical research, strength testing, such as for engines or electronic products, and other experiments that require high-altitude conditions. Conventional high-altitude environment simulation chambers can only reduce temperature and humidity to a limited extent and generally do not have the ability to simulate extreme weather conditions. Furthermore, the accuracy of humidity regulation needs to be improved. To improve the functionality of high-altitude environment simulation chambers, it is necessary to propose a simulation chamber with a stronger and more accurate ability to create low-pressure, low-temperature, and low-humidity environments. Summary of the Invention

[0004] The purpose of this invention is to provide a high-altitude environment simulation chamber, which aims to solve the problems of existing ordinary simulation chambers having limited ability to reduce temperature and humidity, insufficient ability to create low-pressure, low-temperature and low-humidity environments, and insufficient adjustment precision.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] A high-altitude environment simulation chamber includes:

[0007] The cabin is equipped with temperature and humidity sensors and pressure sensors.

[0008] A vacuum pump is arranged on the outside of the chamber, and the air inlet of the vacuum pump is connected to the inside of the chamber.

[0009] A primary temperature and humidity control unit is detachably connected to the cabin body, and the primary temperature and humidity control unit performs condensation dehumidification inside the cabin body;

[0010] A secondary temperature and humidity control unit is detachably connected to the cabin. After the humidity inside the cabin is reduced to a specific value by the primary temperature and humidity control unit, the secondary temperature and humidity control unit is activated to circulate and dry the interior of the cabin.

[0011] A PID control system is electrically connected to the primary temperature and humidity control unit and the secondary temperature and humidity control unit, and the PID control system is signal-connected to the temperature and humidity sensor and the pressure sensor.

[0012] The beneficial effects of this invention are: by using two-stage temperature and humidity control units, lower pressure, lower temperature and lower humidity are achieved. On the basis of the first-stage temperature and humidity control unit, a second-stage temperature and humidity control unit is set up to further enhance the simulation chamber's ability to simulate harsh plateau environments.

[0013] Furthermore, the primary temperature and humidity control unit includes:

[0014] The server rack is connected to the cabin.

[0015] The circulating fan and the evaporator are both located inside the cabinet.

[0016] The condenser, located outside the enclosure, has its input end passing through the cabinet and communicating with the evaporator.

[0017] A cooling tower is located outside the chamber, and its input end is connected to the output end of the condenser.

[0018] A further beneficial effect of the present invention is that the circulating fan allows the gas inside the chamber to circulate, and the evaporator and condenser work together to cool and dehumidify the other components inside the chamber through condensation.

[0019] Furthermore, the primary temperature and humidity control unit also includes:

[0020] A humidifier located inside the cabin; a humidification pipe connecting the humidifier and the cabinet;

[0021] An electric heater, which is fixed inside the cabinet.

[0022] A further beneficial effect of this invention is that the temperature and humidity inside the cabin can be finely adjusted by using a humidifier and an electric heater.

[0023] Furthermore, the primary temperature and humidity control unit also includes:

[0024] A bypass ventilation valve is located at the junction of the cabinet and the cabin.

[0025] A further beneficial effect of the present invention is that the flow rate and velocity of the air circulating from the cabin to the cabinet can be adjusted by opening and closing the bypass ventilation valve.

[0026] Furthermore, the secondary temperature and humidity control unit includes:

[0027] An air compressor is disposed outside the cabin and detachably connected to the cabin, and its air inlet communicates with the interior of the cabin;

[0028] A micro-thermal adsorption dryer is arranged outside the chamber, and its air inlet is connected to the air outlet of the air compressor.

[0029] The first refrigerated dryer is arranged outside the chamber, and its air inlet is connected to the air outlet of the micro-thermal adsorption dryer, and its air outlet is connected to the interior of the chamber.

[0030] Further beneficial effects of this invention are: by using an air compressor to extract air from the chamber and provide an air pressure of 0.7 MPa or higher, the optimal moisture absorption air pressure requirement of the micro-thermal adsorption dryer is achieved, and the air is further dehumidified by the micro-thermal adsorption dryer. The dehumidified gas from the micro-thermal adsorption dryer will be heated and then cooled by a first refrigerated dryer to avoid a large heat load caused by the low temperature inside the chamber, while further dehumidifying.

[0031] Furthermore, it also includes a three-stage temperature and humidity control unit.

[0032] The air inlet of the three-stage temperature and humidity regulating unit is connected to the air outlet of the air compressor, and the air outlet of the three-stage temperature and humidity regulating unit is connected to the air inlet of the micro-thermal adsorption dryer.

[0033] A further beneficial effect of this invention is that the gas passing through the air compressor will heat up. To reduce the impact of temperature difference, the gas discharged from the air compressor is cooled and dehumidified before being passed into a micro-heat adsorption dryer.

[0034] Furthermore, the three-stage temperature and humidity control unit includes:

[0035] An air tank, wherein the air inlet of the air tank is connected to the air outlet of the air compressor;

[0036] The second refrigerated dryer has its air inlet connected to the air tank and its air outlet connected to the micro-thermal adsorption dryer.

[0037] Further beneficial effects of the present invention are: by providing an air buffer space through the gas tank, the air flow through the low humidity system is stabilized, and the gas heated by the air compressor is cooled and dehumidified by the second dry cooler.

[0038] Furthermore, the inner wall of the cabin is provided with a polyurethane insulation layer.

[0039] A further beneficial effect of the present invention is that the polyurethane insulation layer facilitates the maintenance of the temperature inside the cabin.

[0040] The method for using a simulation chamber that simulates a high-altitude environment includes the following steps:

[0041] Step 1: Turn on the vacuum pump and automatically adjust the pressure inside the environmental chamber using frequency conversion.

[0042] Step 2: Activate the primary or secondary temperature and humidity control unit according to the humidity setting to reduce the temperature and humidity inside the environmental chamber.

[0043] Furthermore, the specific process of step two is as follows:

[0044] When the humidity setpoint is ≥30RH%, the first-level temperature and humidity control unit is turned on;

[0045] When 20%RH≤humidity setpoint≤30RH%, reduce the power of the first-level temperature and humidity control unit;

[0046] When the humidity setpoint is ≤20RH%, turn on the secondary temperature and humidity control unit.

[0047] Further beneficial effects of the present invention are: by setting up two-stage temperature and humidity control units, the overall cooling and humidity reduction capabilities of the cabin are increased. The cooperation of the two-stage temperature and humidity control units can ultimately enable the plateau environment simulation cabin of the present invention to achieve an extremely harsh environment of -40℃ to 80℃ and humidity below 5%RH, which is superior to ordinary simulation cabins in the prior art. Attached Figure Description

[0048] Figure 1 A top view of a high-altitude environment simulation chamber provided by the present invention;

[0049] Attached Figure

[0050] 1. Cabinet; 2. Cabinet; 3. Circulating fan; 4. Evaporator; 5. Condenser; 6. Cooling tower; 7. Humidifier; 8. Electric heater; 9. Bypass valve; 10. Air compressor; 11. First refrigerated dryer; 12. Micro-thermal adsorption dryer; 13. Gas tank; 14. Second refrigerated dryer; 15. Vacuum pump; 16. Polyurethane insulation layer. Detailed Implementation

[0051] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0052] like Figure 1The plateau environment simulation chamber shown mainly includes a chamber 1, which is rectangular in shape and includes a metal frame made of welded metal plates. An entrance and exit are provided on one side wall, and a door is provided to open and close this entrance and exit. The door is hinged to the entrance and exit on the side wall. A polyurethane insulation layer 16 is provided on the inner wall of the chamber, which is in close contact with the inner wall of the chamber to ensure the temperature stability inside the chamber. Pressure sensors and temperature and humidity sensors are installed inside the chamber 1 to monitor the air pressure, temperature and humidity inside the chamber 1 in real time and transmit the signals to the PID control system so as to adjust the air pressure, temperature and humidity inside the chamber to achieve the values ​​required for the experiment.

[0053] To achieve a low-pressure environment, the present invention employs a vacuum pump 15. The air inlet of the vacuum pump 15 is connected to the interior of the chamber 1. After the vacuum pump 15 is turned on, the gas inside the chamber 1 is extracted to reduce the air pressure. Furthermore, the device for achieving low pressure is not limited to a vacuum pump; any equivalent or similar device may be used.

[0054] To regulate temperature and humidity, this invention employs a two-stage temperature and humidity control unit. Specifically, the first-stage temperature and humidity control unit includes:

[0055] Cabinet 2, part of which extends into the interior of compartment 1 and communicates with compartment 1, ensuring that gas can flow smoothly between the interior of compartment 1 and cabinet 2.

[0056] The circulating fan 3 is located inside the cabinet 2 and is controlled by a PID control system. When the circulating fan 3 is turned on, it can drive the air in the compartment 1 to circulate towards the cabinet 2.

[0057] Evaporator 4, condenser 5 and cooling tower 6 work together to achieve condensation and dehumidification. They are controlled by a PID control system. Evaporator 4 is located inside cabinet 2, while condenser 5 and cooling tower 6 are located outside of compartment 1. Evaporator 4, condenser 5 and cooling tower 6 are connected in sequence. When turned on, they condense and dehumidify the air inside compartment 1.

[0058] To further improve the technical solution, the first-level temperature and humidity control unit also includes a humidifier 7 and an electric heater 8. The electric heater 8 is installed inside the cabinet 2, located in a part of the cabinet 2 that passes through the cabin 1. The humidifier 7 is installed inside the cabin 1 and is equipped with a humidification pipe. One end of the humidification pipe is connected to the humidifier, and the other end is connected to the inside of the cabinet 2.

[0059] To further improve the technical solution, the primary temperature and humidity control unit also includes a bypass ventilation valve 9. There are two bypass ventilation valves 9, which are respectively located on both sides of the part of the cabinet 2 that extends into the cabin 1. The bypass ventilation valves 9, in conjunction with the frequency adjustment of the circulating fan 3, can adjust the air volume passing through the evaporator 4.

[0060] Two-stage temperature and humidity control units include:

[0061] Air compressor 10, micro-thermal adsorption dryer 11, and first refrigerated dryer 12 are arranged on the outside of the chamber 1 and connected in sequence. They are controlled by a PID control system. The air inlet of air compressor 10 is connected to the inside of chamber 1, and the air outlet of first refrigerated dryer 12 is connected to the inside of chamber 1. The secondary temperature and humidity regulating unit can draw air from the chamber 1, cool and dehumidify it, and then put it back into the chamber 1 for circulation.

[0062] The function of the air compressor 10 is to provide an air pressure of 0.7 MPa or higher, so that the air extracted from the chamber 1 reaches the optimal moisture absorption air pressure requirement of the micro-thermal adsorption dryer 11, which facilitates dehumidification after passing through the micro-thermal adsorption dryer 11. The temperature of the gas after dehumidification by the micro-thermal adsorption dryer 11 will rise. In order to avoid the heated air being directly discharged into the chamber 1, which would cause a large heat load in the low-temperature chamber 1 due to the large temperature difference, a first refrigerated dryer 12 is connected to the air outlet of the micro-thermal adsorption dryer 11. After passing through the first refrigerated dryer 12, the gas is cooled and dehumidified again before being discharged into the chamber 1.

[0063] To further improve the technical solution, since the gas will also heat up after passing through the air compressor 10, a three-stage temperature and humidity control unit was designed separately. The three-stage temperature and humidity control unit cools and dehumidifies the gas discharged from the air compressor 10 before it is introduced into the micro-heat adsorption dryer 11.

[0064] Specifically, the three-stage temperature and humidity control unit includes an air tank 13 and a second refrigerated dryer 14, both controlled by a PID control system. The air inlet of the air tank 13 is connected to the air outlet of the air compressor 10, the air inlet of the second refrigerated dryer 14 is connected to the air outlet of the air tank 13, and the air outlet of the second refrigerated dryer 14 is connected to the air inlet of the micro-heat adsorption dryer 11. The function of the air tank 13 is to provide an air buffer space to stabilize the air flow through the three-stage and two-stage temperature and humidity control units. The function of the second refrigerated dryer 14 is to cool down the gas that has been heated after passing through the air compressor 10 before it is introduced into the micro-heat adsorption dryer 11.

[0065] Specifically, the internal devices of the primary, secondary, and tertiary temperature and humidity control units are connected by pipes to ensure their airtightness.

[0066] This invention, through the coordinated use of multi-stage temperature and humidity control units, can achieve very low temperature and humidity levels within cabin 1. The specific usage process of the high-altitude environment simulation cabin provided by this invention is as follows:

[0067] Step 1: Turn on vacuum pump 15 and automatically adjust the pressure inside chamber 1 using frequency conversion.

[0068] Step 2: Activate the primary or secondary temperature and humidity control unit according to the different humidity settings to reduce the temperature and humidity inside the cabin.

[0069] Specifically, step two is as follows:

[0070] When the humidity setpoint is ≥30RH%, the circulating fan 3, evaporator 4, condenser 5 and cooling tower 6 are turned on to dehumidify by condensation, so that the humidity inside the chamber is below the setpoint. Then, the humidifier 7 is adjusted by PID to bring the humidity inside the chamber back to the setpoint.

[0071] When 20%RH≤humidity setpoint≤30RH%, open the bypass ventilation valve 9, adjust the frequency of the circulating fan 3 to reduce the air volume passing through the evaporator 4, dehumidify by condensation, and bring the humidity inside the chamber below the set value. Then, adjust the humidifier 7 by PID to bring the humidity inside the chamber back to the set value.

[0072] When the humidity setpoint is ≤20RH%, open the bypass ventilation valve 9, adjust the frequency of the circulating fan 3 to reduce the air volume passing through the evaporator 4, and then turn on the air compressor 10, the second refrigerated dryer 14, the micro-heat adsorption dryer 11, and the first refrigerated dryer 12 to extract the air in the chamber and send the dehumidified air back into the chamber for circulation so that the humidity in the chamber reaches below the setpoint. Then, adjust the humidifier 7 through PID to bring the humidity in the chamber to the setpoint.

[0073] In this invention, the multi-stage temperature and humidity control units can work together to activate the corresponding temperature and humidity control units according to the required humidity range, making more precise adjustments. Through multi-stage adjustment, the temperature and humidity inside the chamber can reach a lower value, ultimately enabling the plateau environment simulation chamber of this invention to achieve an extreme harsh environment of -40℃ to 80℃ and humidity below 5%RH, which is superior to ordinary simulation chambers in the prior art.

[0074] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A high-altitude environment simulation chamber, characterized in that, include: The cabin (1) is equipped with a temperature and humidity sensor and a pressure sensor. A vacuum pump (15) is arranged on the outside of the cabin (1), and the air inlet of the vacuum pump (15) is connected to the inside of the cabin (1). A primary temperature and humidity control unit is detachably connected to the cabin (1) and performs condensation dehumidification inside the cabin (1). The secondary temperature and humidity control unit is detachably connected to the cabin (1). After the humidity inside the cabin (1) is reduced to a specific value by the primary temperature and humidity control unit, the secondary temperature and humidity control unit is started. The secondary temperature and humidity control unit performs circulating drying and dehumidification inside the cabin (1). A PID control system is electrically connected to the primary temperature and humidity control unit and the secondary temperature and humidity control unit, and the PID control system is signal-connected to the temperature and humidity sensor and the pressure sensor. The primary temperature and humidity control unit includes: The cabinet (2) is detachably connected to the cabin (1) on one side, and the cabinet (2) is provided with a ventilation opening on the side connected to the cabin (1); A circulating fan (3) is arranged inside the cabinet (2); Evaporator (4), which is arranged inside the cabinet (2); The condenser (5) is located outside the cabin (1), and its input end passes through the cabinet (2) and is connected to the evaporator (4); Cooling tower (6) is located outside the cabin (1), and its input end is connected to the output end of the condenser (5).

2. The plateau environment simulation chamber according to claim 1, characterized in that, The primary temperature and humidity control unit also includes: Humidifier (7), the humidifier (7) is located inside the cabin (1); one end of the humidifier (7) is connected to the inside of the cabinet (2); An electric heater (8) is fixedly connected inside the cabinet (2).

3. The plateau environment simulation chamber according to claim 1, characterized in that, The primary temperature and humidity control unit also includes: A side ventilation valve (9) is provided at the connection between the cabinet (2) and the cabin (1).

4. The plateau environment simulation chamber according to claim 1, characterized in that, The secondary temperature and humidity control unit includes: An air compressor (10) is arranged outside the cabin (1) and detachably connected to the cabin (1), and its air inlet is connected to the interior of the cabin (1). Micro-thermal adsorption dryer (11), the micro-thermal adsorption dryer (11) is arranged outside the cabin (1), and its air inlet is connected to the air outlet of the air compressor (10); The first refrigerated dryer (12) is arranged outside the cabin (1), and its air inlet is connected to the air outlet of the micro-thermal adsorption dryer (11), and its air outlet is connected to the interior of the cabin (1).

5. A plateau environment simulation chamber according to claim 4, characterized in that, It also includes a three-stage temperature and humidity control unit. The air inlet of the three-stage temperature and humidity control unit is connected to the air outlet of the air compressor (10), and the air outlet of the three-stage temperature and humidity control unit is connected to the air inlet of the micro-heat adsorption dryer (11).

6. A plateau environment simulation chamber according to claim 5, characterized in that, The three-stage temperature and humidity control unit includes: Air tank (13), the air inlet of the air tank (13) is connected to the air outlet of the air compressor (10); The second refrigerated dryer (14) has its air inlet connected to the air tank (13) and its air outlet connected to the micro-thermal adsorption dryer (11).

7. A plateau environment simulation chamber according to claims 1-6, characterized in that, The inner wall of the cabin (1) is provided with a polyurethane insulation layer (16).

8. A method of using a high-altitude environment simulation chamber, comprising the high-altitude environment simulation chamber as described in any one of claims 1-6, wherein the specific steps are as follows: Step 1: Turn on the vacuum pump (15) and automatically adjust the pressure inside the chamber (1) using frequency conversion. Step 2: Activate the primary or secondary temperature and humidity control unit according to the humidity setting value to reduce the temperature and humidity inside the cabin (1).

9. The method of using a plateau environment simulation chamber according to claim 8, characterized in that, The specific process of step two is as follows: When the humidity setpoint is ≥30RH%, the first-level temperature and humidity control unit is turned on; When 20%RH≤humidity setpoint≤30RH%, reduce the power of the first-level temperature and humidity control unit; When the humidity setpoint is ≤20RH%, turn on the secondary temperature and humidity control unit.

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