60 results about "Environmental chamber" patented technology

The invention discloses a construction method and system for volatile organic compound release behavior characterization, and belongs to the technical field of air analysis and risk assessment. According to the method, feature analysis is carried out based on multi-source information such as a molecular structure, a release carrier and environmental conditions, modeling is carried out on a release process by utilizing a mapping operator, and a three-dimensional representation vector V = [I, S, E] reflecting release intensity, environmental sensitivity and time evolution is constructed. The representation is output in a behavior vector or digital label mode, and unified quantitative benchmarking of different substances in a cross-scene mode is achieved. According to the method, depth characteristics such as molecular polarity and desorption activation energy are introduced, so that the dependence on long-period environmental chamber experiments is reduced, the generalization prediction capability on unknown pollutants is improved, the logic connection problem between a bottom-layer physical mechanism and an upper-layer intelligent management and control system is solved, and the reliability of the system is improved. And standardized and explainable behavior input is provided for prospective risk research and judgment.

The invention provides a method suitable for an environmental bin heating test, and belongs to the technical field of environmental bin heating test, the method comprises the steps: determining a temperature measurement position through a graph theory topology optimization sensor arrangement algorithm, constructing a temperature field graph, configuring a Beckfu controller to collect temperature data at high frequency, and carrying out sliding window statistical test processing; a high-power main heater and a low-power auxiliary heater are installed at the top and the bottom of the environment bin respectively to form a closed-loop circulation system, temperature control partitions are divided according to the temperature deviation value, and a fuzzy sliding mode variable structure control algorithm is adopted to calculate partition heater control instructions. A control instruction is input into the thermal field dynamic balance optimization model for global collaborative optimization, an optimal power distribution scheme is output, a variable-power staged heating strategy is executed to achieve rapid temperature rise and fine temperature adjustment, and the technical problem that the test precision is reduced due to uneven temperature field distribution in the environment bin heating test process is solved.

The application discloses a kind of liquid cooling wire harness detection method, device, storage medium and electronic device, it is related to vehicle technical field.Therein, the method comprises: according to test requirement determines test working condition;In test working condition, obtain first temperature, wherein, first temperature includes the temperature of liquid cooling wire harness, the temperature of environmental chamber and the temperature of electrical connection point, environmental chamber is used to isolate liquid cooling wire harness with external environment, and electrical connection point is the connecting point of environmental chamber and temperature sensor;In response to first temperature greater than or equal to temperature threshold value, adjust cooling parameter, wherein, cooling parameter is used to indicate the flow rate and water temperature of cooling loop;In the preset time period after adjusting cooling parameter, obtain second temperature;According to second temperature, liquid cooling wire harness is detected.The application solves the technical problem that related art tests liquid cooling wire harness by appearance inspection or electrical test, resulting in complex method, not easy to implement, low efficiency, low accuracy, low safety.

The invention relates to a system for program control using a digital processor, and more particularly to a system for automatically generating reports about the state of thermal vacuum and manufacturing systems. The technical result, which consists in more timely generation of reports about the state of thermal vacuum and manufacturing systems, is achieved in that the present system for automatically generating reports about the state of thermal vacuum and manufacturing systems comprises a host computer interconnected with a control unit that transmits control signals to monitoring and measuring devices and a data processing unit, wherein the monitoring and measuring devices transmit data to a data collection unit, which transmits data to the data processing unit, which transmits data to the control unit, which transmits data to the host computer, and the monitoring and measuring devices include a validation device, a device for measuring the amount of aerosol particles in the air, a device for remotely recording temperature and relative humidity values, a device for monitoring the parameters of controlled environment rooms, and a module for generating a report about a set of production equipment, wherein the data collection unit is connected to a database, which is connected to the data processing unit.

The utility model discloses a kind of formaldehyde environmental chamber equipment with background concentration self-checking and automatic cleaning function, the formaldehyde environmental chamber equipment includes cabin, the sample holder for placing sample is installed in the cabin, the temperature and humidity sensor for real-time monitoring environmental parameter in cabin and the air circulation device for maintaining air flow uniformity in cabin are used, the formaldehyde environmental chamber equipment also includes sampling detection module, spray cleaning module and main control system. The formaldehyde environmental chamber equipment can effectively replace the conventional means of existing dependence on artificial judgment and operation, realize the rapid judgment and cleaning response of test chamber state, greatly shorten test preparation time, reduce artificial operation frequency and detection time cost.

This invention discloses a wireless distributed networking test system and method for climate environment testing, relating to the field of wireless distributed networking test technology. The system includes at least one environmental chamber for placing the product under test (DUT), which is located within a pre-constructed distributed wireless local area network (WLAN). The WLAN includes a wireless base station and at least one wireless node, with one wireless node installed in each environmental chamber. At least one type of digital sensor is also installed in each environmental chamber. Each type of digital sensor is used to collect at least one type of parameter to be measured within the environmental chamber. The digital sensors transmit the collected parameters to the wireless node within their respective environmental chamber via a digital bus. The wireless node transmits the parameters to be measured within its environmental chamber to a test control terminal via the wireless base station. This invention solves the problem of low testing efficiency caused by complex cable laying in existing systems by constructing a distributed wireless local area network to transmit test data during the testing process.

The embodiment of the invention provides an air conditioner testing method and device and electronic equipment, and relates to the technical field of air conditioners. The method comprises the following steps: based on operating parameters of a to-be-tested air conditioner, performing a first test through an enthalpy difference chamber to obtain rated maximum power consumption of the to-be-tested air conditioner under the operating parameters; based on the operation parameters, a second test is carried out through an environment room, and the free operation power consumption of the air conditioner to be tested under the operation parameters is obtained; and according to the rated maximum power consumption and the free operation power consumption, energy-saving rate information of the air conditioner to be tested under the operation parameters is determined.

A method of baking a detector, the method comprising: placing a mid-wave infrared detector in an environmental chamber, wherein the environmental chamber is opaque. The mid-wave infrared detector comprises an anode, a guard terminal, and a cathode. The method further comprising connecting the anode to the cathode in a short circuit configuration, heating the environmental chamber to a bake temperature selected in the range of 60 to 70 degrees Celsius, and maintaining the detector in the environmental chamber for a period selected in the range of 72 hours to 240 hours.

This invention provides a test apparatus for a vehicle thermal management system. The apparatus includes: an environmental chamber with a first accommodating cavity for simulating an external environment; a first test component located within the first accommodating cavity, comprising a simulated driver's cab and an air conditioning unit, the air conditioning unit being located within the simulated driver's cab and providing heat load to the simulated driver's cab; a thermal management system under test located within the first accommodating cavity, connected to the air conditioning unit for heat exchange; and a second test component located outside the first accommodating cavity, including a water-cooled unit connected to the thermal management system under test for heat exchange, the water-cooled unit providing battery heat load to the thermal management system under test. This solution addresses the technical problem that existing enthalpy difference test benches cannot meet the testing requirements of thermal management systems for new energy commercial vehicles.

This invention relates to the field of materials testing technology, specifically to a device for testing the fatigue tensile strength of synthetic rubber. The device includes a support assembly, an environmental conditioning assembly, a tensile testing assembly, and a discharge assembly. An environmental chamber is mounted on a base. A hoisting structure is used to hold the synthetic rubber to be tested. A sealed door is slidably mounted inside the environmental chamber, providing an entrance for the synthetic rubber. The environmental conditioning assembly is located inside the environmental chamber. A support rod is fixed inside the environmental chamber, and a sliding block is slidably mounted on the support rod. Two first clamping rods are rotatably mounted on the support rod, and two second clamping rods are rotatably mounted on the sliding block. A control component is used to control the first and second clamping rods to simultaneously clamp the synthetic rubber to be tested. A reciprocating movement component is used to control the reciprocating movement of the sliding block and the second clamping rods to drive the synthetic rubber to be tested for tensile testing. This device solves the problems of insufficient environmental simulation capability and unreliable clamping in existing technologies, achieving accurate fatigue tensile testing under multiple environmental conditions.

The invention provides an environment simulation device for an aircraft tire dynamic simulation test, and relates to the field of aircraft tire test equipment, the environment simulation device comprises an environment box, a heating circulation system, a liquid nitrogen cooling system and a connecting pipeline; a box body of the environment box is defined by side plates, a top plate and a bottom plate, the side plates comprise the first set of side plates and the second set of side plates which are oppositely arranged, the first set of side plates are each provided with an installation groove used for allowing a tire shaft to penetrate through in the hoisting process, and the environment box further comprises translation sliding doors arranged on the first set of side plates correspondingly; the bottom plate is a split type bottom plate; a pipeline connecting opening is formed in the top plate, and the heating circulating system and the liquid nitrogen cooling system communicate with the pipeline connecting opening through a connecting pipeline and are used for adjusting and controlling the temperature in the environment box. According to the invention, high and low temperature environment simulation can be rapidly carried out without dismounting the tire, and rapid evacuation is carried out, so that the tire is subjected to a dynamic test at a simulated temperature, the test accuracy and safety are improved, and the equipment cost and the operation difficulty are reduced.

The invention relates to the technical field of artificial intelligence, particularly provides an adaptive neural network steady-state temperature control method for a wide-temperature-range environment box, and aims to solve the technical problem that pure neural network single-mode steady-state temperature control cannot be realized in an existing temperature control scheme. In order to achieve the purpose, the temperature control method comprises the steps that a neural network model is constructed; acquiring a current temperature state parameter of the environment box; determining a loss function based on the current temperature state parameter and a preset target temperature; training a neural network model based on the loss function and the power adjustment proportion to obtain a pre-trained neural network model; the internal temperature of the environmental box is adjusted by using the pre-trained neural network model, so that the internal temperature of the environmental box can be quickly converged to the preset target temperature and kept stable, and the use requirements of different temperature intervals of the wide-temperature-range environmental box are met.

The invention relates to a whole vehicle wheel end loading system suitable for an environmental chamber and a loading method thereof, and the system comprises the environmental chamber which provides a high-temperature or low-temperature test environment for a to-be-tested vehicle; the supporting mechanism is used for supporting a vehicle body of the to-be-tested vehicle; the transmission part I is a tooth-shaped transmission structure mounted on the outer circumference of the tire; the loading power source is connected with a transmission shaft and is used for transmitting the torque output by the loading power source; and the second transmission part is connected with the first transmission part and is combined with the transmission shaft to realize road resistance loading of the to-be-tested vehicle. According to the whole vehicle wheel end loading system suitable for being used in the environmental chamber, torque transmission is achieved through the external loading power source and the internal transmission chain, tire dismounting is avoided, occupied space is reduced, meanwhile, the external heat source does not interfere with the temperature of the environmental chamber, and therefore real road resistance is efficiently simulated; the device has the advantages of improving the space utilization rate, reducing the operation complexity, preventing heat from interfering the temperature of the environment chamber and realizing real road resistance simulation.

This invention relates to the field of CFRP leakage detection technology, specifically to an in-situ CFRP leakage rate testing system under extreme thermo-coupling environments. The system comprises an extreme temperature environment simulation and mechanical loading subsystem, consisting of an environmental chamber and a mechanical loading unit; an in-situ helium mass spectrometry leakage detection subsystem, used to construct an independent helium chamber on one side of the sample; a molecular pump and a backing pump connected via stainless steel tubing on the other side of the sample; leakage detection using a helium mass spectrometer leak detector; and a multi-channel synchronous data acquisition and control subsystem, used for unified triggering of acquisition channels and software time correction; and for controlling environmental temperature, strain loading, real-time acquisition of leakage signals, and unified timeline display of multi-channel data. This invention improves the realism of environmental simulation, the continuity of detection, and the integrity of data correlation in CFRP leakage detection.

This invention discloses an experimental device for evaluating the water purification performance of constructed wetlands under low-temperature conditions, relating to the field of wastewater treatment experimental technology. The device includes an environmental chamber and multiple parallel experimental units. The environmental chamber contains a low-temperature medium, and each experimental unit includes a water storage tank, a water pump, and a substrate-filled column. The water storage tank is partially submerged in the low-temperature medium and has a support plate inside. The support plate is arranged with a layer of *Potamogeton crispus* and a layer of aquatic plants from bottom to top, separated from the upper water purification zone by an intermediate filter. The water pump, substrate-filled column, and water storage tank are connected by pipelines to form a circulating water system. By simulating a cold winter environment using the low-temperature medium, and utilizing multiple independent experimental units, the purification efficiency of different substrate and plant combinations under low-temperature conditions can be compared simultaneously, recreating the low-temperature operation scenario of natural wetlands and achieving reliable and controllable testing of the water purification performance of constructed wetlands under low-temperature conditions.

The invention discloses a high-temperature test device and method for a high-speed rotor of a new energy vehicle with hybrid power and pure electric power systems, and the device employs a high-power heat gun to heat the high-speed rotor, collects the temperature of the high-speed rotor through an infrared non-contact temperature sensor, and feeds back the temperature to a rack upper computer system. And the upper computer system of the rack controls the heating power of the hot air gun, so that the temperature of the rotor is maintained in a target temperature range (140-180 DEG C), and the control precision is + / -2 DEG C. According to the invention, temperature control does not need to depend on a high-power environment chamber (40kW), heating is convenient, and energy is saved; rotor temperature measurement is accurate, dynamic closed-loop accurate temperature control is formed, and a prototype is more convenient to install.

The utility model relates to the technical field of environment test boxes, and discloses a special high and low temperature environment box for testing the performance of an electric fuel pump, which comprises a box body, the front side of the box body is rotatably connected with a connecting assembly, the connecting assembly is convenient for detecting the electric fuel pump, the rear side of the box body is fixedly connected with a permeable plate, and the permeable plate is fixedly connected with a water inlet. The rear side of the box body is fixedly connected with a heating box, the interior of the heating box is fixedly connected with electric heating wires which are uniformly distributed, the left side of the upper part of the box body is fixedly connected with a first air extracting pump, and the output end of the first air extracting pump is fixedly connected with an air conveying pipe. According to the utility model, the internal temperature of the box body can be accurately controlled, the influence of overlarge local temperature difference on the test result is avoided, the comprehensive and accurate test on the performance of the electric fuel pump is ensured, the equipment has a humidity control function, and different humidity environments can be simulated in the test process.

The invention discloses a test control method and system for an electronic product, and the method and system are used in the field of product testing, and the method comprises the following steps: constructing a modular test environment room, and setting and regulating specific environment parameters for each test module; optimizing a test sequence and resource configuration; based on the automatically executed working state and performance test, according to the characteristics of the modular test environment room, simultaneously applying variable environment conditions to each test module, and executing multiple tests; collecting key data generated in multiple test processes, analyzing the key data by using a distributed reinforcement learning algorithm, and identifying defects of the electronic product in design; and unusual conditions in the testing process are continuously monitored. According to the invention, variable environmental conditions can be accurately simulated according to the actual use scene of the electronic product, the efficient operation of the test and the accuracy of the test data are ensured, and the resource waste is reduced by optimizing the test sequence and resource configuration.

The invention discloses an environmental chamber energy-saving control method. A multi-chamber system is provided with a master control unit, a shared refrigeration module, a shared heating module, a shared ventilation module, a temperature detection module, an air duct switching module, a shared air duct and an energy consumption monitoring module. A multi-cabin system is adopted to configure a general control unit to plan all modules to work cooperatively, an initialization setting stage is that operation parameters are defined, a shared ventilation module is started to construct closed-loop airflow circulation, and stable circulation of airflow is ensured; a temperature data acquisition link provides an accurate basis for subsequent adjustment, and blind control is avoided; adjusting links of the heating module and the refrigerating module are shared, on-demand operation is achieved by means of comparison and judgment of the master control unit, repeated energy consumption of traditional single-cabin independent equipment is avoided, and the device has the advantage of being good in energy-saving effect.

The utility model relates to a VOC (volatile organic compound) performance testing device for an automotive trim electrical element under a dynamic working condition, which comprises an environmental chamber, a main sampling bag arranged in the environmental chamber, a main air pipe communicated with the main sampling bag, and two auxiliary sampling bags communicated with the main sampling bag through the main air pipe, the main sampling pump is used for filling gas in the main sampling bag into the auxiliary sampling bag through a main gas pipe, the auxiliary sampling bag is provided with a gas sampling interface and an anti-gas leakage terminal joint, and the main sampling bag is used for placing automotive upholstery or a standard solution so as to be used for manufacturing a standard gas atmosphere in an electrical element working environment; one auxiliary sampling bag is used as an experimental group air bag for placing a started electrical element, and the other auxiliary sampling bag is used for placing an unstarted electrical element; the device has the advantages of simulating and verifying the contribution, monitoring or purification effect of the electrical element on the VOC in the indoor air of the automobile in a power-on working dynamic mode, and accurately evaluating the actual influence of the electrical element on the indoor air quality of the automobile.

The present disclosure provides an ultrafast high-temperature sintering device comprising an environmental chamber with walls defining an internal volume, a sealable opening for access, and ports coupled to the internal volume. The device includes a heater portion configured to sandwich a target sample between two resistive heating coil elements, with alloy shields on either side to reduce radiation heat loss. The environmental chamber enables controlled ambient gas environments from oxidizing to inert to vacuum conditions. The heating elements comprise Fe-Al-Cr alloy coils in substantially planar snaking patterns, providing oxidation resistance at high temperatures. The device enables densification of ceramic materials including AI2O3, ZrO2, TiO2. LiZr2(PO4)3, and Li7La3Zr2O12 within minutes while maintaining precise environmental control.

This invention discloses a testing device and method for thermal gas generation from lithium batteries. The device includes an environmental chamber, a sample chamber, a charging and discharging device, a first solenoid valve, a first gas guide pipe, a gas collection device, and a controller. The sample chamber has a first gas guide pipe, which is connected to the first solenoid valve and the gas collection device sequentially through a first through-hole of the environmental chamber. The environmental chamber has a heating function. The controller controls the charging and discharging device to charge and discharge the lithium battery. When the state of charge of the lithium battery reaches a preset charge range, the controller controls the environmental chamber to heat at a preset rate so that the temperature inside the sample chamber reaches a preset temperature threshold. The controller also controls the first solenoid valve to be open so that the gas inside the sample chamber enters the gas collection device. The controller also performs component analysis on the gas collected by the gas collection device at different temperatures. This enables the collection of gas from the lithium battery at different states of charge and different temperatures.

The invention discloses a winter cat house intelligent heating system based on temperature sensing control, and belongs to the technical field of winter cat house intelligent heating, the winter cat house intelligent heating system comprises a temperature control cat house base, the temperature control cat house base is fixedly connected with a cat house shell top cabin, and the temperature control cat house base is provided with a heating pad used for temperature control heating of a cat house; and a temperature sensing probe is mounted in a ventilation opening in the bottom of the temperature control cat nest base and is used for monitoring the environment room temperature. According to the cat house, the temperature sensing probe is integrated in the top cabin of the cat house shell to monitor the environment room temperature in real time, the circuit board automatically controls the heating pad to be started and stopped according to the preset temperature threshold value, precise constant temperature is achieved, the overheating risk or energy waste caused by continuous heating is avoided, and a safe, stable and comfortable rest environment is provided for cats; meanwhile, frequent manual operation of a user is avoided, and unattended operation and intelligent guarding are truly achieved.

The utility model discloses high-altitude performance test equipment for an environmental control system. The high-altitude performance test equipment comprises an air compressor, an air collection tank, an electric valve, a high-altitude environmental chamber, a quick coupler, a pressure sensor, a mass flowmeter, a temperature sensor, a safety valve, an air filter, a vacuum pump unit, an evaporator assembly, a fan, a compressor, a condenser assembly, a valve body assembly, an alternating current power supply and a direct current power supply. According to the utility model, the vacuum pump unit and the refrigerating unit are adjusted to meet the test conditions of test items of the technical requirements of the environmental control system assembly, the on-off connection between the air source and the high-altitude environmental chamber can be easily realized through the quick coupler, the simulation test result of the environmental control system assembly is accurate, and the test device is suitable for testing different types of environmental control systems.

The present application relates to the technical field of humidity adjustment of environment simulation cabin, and discloses a humidity control system of environment simulation cabin, the environment simulation cabin is divided into condensation dehumidification section, uniform diffusion section and ultrasonic humidification section, wherein, the uniform diffusion section is arranged between the condensation dehumidification section and the ultrasonic humidification section, the condensation dehumidification section is provided with condensation plates for reducing humidity in the environment simulation cabin, the ultrasonic humidification section is provided with an ultrasonic humidifier and a water tank for improving humidity in the environment simulation cabin, a humidity sensor for obtaining current humidity at the position between the condensation dehumidification section and the ultrasonic humidification section is arranged, the power of the condensation plates of the ultrasonic humidifier is adjusted to make the humidity in the environment simulation cabin uniform and stable, the environment simulation cabin is divided into three areas, the average humidity of the contact surface of the selected area is taken as a control point, and the humidity of the uniform diffusion section is more effectively controlled.

The invention relates to a test vehicle safe evacuation method and system and electronic equipment. The test vehicle safe evacuation method comprises the steps that a power loading trolley and a vehicle bearing plate trailer used for bearing a test vehicle are provided, during testing, the vehicle bearing plate trailer is located in an environment bin, and the power loading trolley is located outside the environment bin; when the test vehicle is in danger, the power loading trolley is controlled to move to a butt joint position of the vehicle bearing plate trailer; at the butt joint position, a power output component on the power loading trolley is controlled to move to be in transmission connection with a corresponding power execution component on the vehicle bearing plate trailer; and controlling the power output part to transmit power to the power execution part, so that the power execution part moves the vehicle bearing plate trailer bearing the test vehicle out of the environment bin. According to the scheme provided by the invention, after the vehicle is on fire, the vehicle can be moved out of the environment bin and evacuated to a safety area, so that the safety of test facilities and personnel is guaranteed.

This utility model relates to the technical field of resistance measurement systems, specifically a modular high-resistance measurement system. It includes a control terminal, a network switch, several measurement modules, and an environmental chamber control module. The measurement modules are independent and can simultaneously measure the resistance of different samples. Both the measurement modules and the environmental chamber control module are connected to the control terminal via the network switch. Each measurement module has several measurement channels CH, which are used to monitor the current and voltage of that channel. The measurement modules and measurement channels CH can be freely superimposed and arbitrarily combined. This utility model uses a voltmeter V and an ammeter A on each measurement channel CH to measure the voltage across the sample R and the current flowing through the measurement channel CH in real time. By selecting either a 1MΩ current-limiting resistor contact or a 0.1MΩ current-limiting resistor contact on the selector switch K, different voltages in the measurement channels CH can be accommodated, resulting in a wider measurement range and more accurate measurement results.

The invention relates to the field of detection equipment, in particular to a motor detection system which comprises an environment box, two sliding rails are fixedly connected in the environment box, a lifting plate is slidably connected between the two sliding rails, two rotating plates are rotatably connected to the lifting plate, and a buffer rod is rotatably connected in each rotating plate. Two baffles are connected to the environment box in a sliding mode, a connecting disc is rotationally connected between the two baffles, a positioning disc is fixedly connected to the connecting disc, and the positioning disc is connected in the environment box in a sliding mode. Three sliding rods are connected into the positioning disc in a sliding mode, each sliding rod is fixedly connected with a locking plate, a flange plate is connected among the three locking plates in an inserted mode, and a spring is fixedly connected between each sliding rod and the positioning disc. A locking ring is rotationally connected into the positioning disc, the locking ring is in meshing transmission connection with the three sliding rods at the same time, and an electromagnetic device and a first rotating motor are arranged between the positioning disc and the locking ring. The motor can be rapidly hoisted into an environment box through the lifting plate arranged in the motor hoisting device.

The invention belongs to the technical field of material performance testing, and particularly discloses a universal testing machine variable temperature and oxygen control environment experiment device which comprises an environment bin, an oxygen content control system, a temperature control system, a strain control system and a safe discharge system. A sample area between an upper chuck and a lower chuck of the universal testing machine is sleeved with the cover body, a main through hole is formed in the side edge of the top of the environment bin, through holes are formed in the positions, at different heights, of the middle of the side face of the environment bin, and the oxygen content control system, the temperature control system, the strain control system and the safe discharging system are communicated with the environment bin. The temperature-variable and oxygen-variable environment experimental device for the universal testing machine can be conveniently and additionally arranged on the existing universal testing machine, mechanical property testing of strain control on a metal sample under a high-temperature and low-oxygen protective atmosphere is achieved, sample oxidation is effectively avoided, the accuracy of experimental data is guaranteed, and operation safety is guaranteed.

This invention provides an aircraft engine icing simulation test apparatus, comprising: a climate environment chamber for mounting the engine, the climate environment chamber being equipped with a spray device that is positioned to correspond to the engine along the direction of gravity; a spray equipment room connecting the spray device; and a refrigeration device for supplying cold air to the climate environment chamber. It can be seen that, compared with horizontal icing test apparatuses in related technologies, the test apparatus of this application has the following advantages: First, its vertical structure can fully utilize vertical space and save floor space, thereby reducing construction costs; second, the vertical structure can utilize gravity, facilitating the intake of atomized droplets into the engine to complete the icing test; and third, the annular uniform distribution of nozzles on the spray device facilitates the uniform distribution of atomized droplets, thereby improving the uniformity of the distribution of atomized droplets ingested into the engine.