High and low temperature impact test chamber that the temperature impact test chamber, cold and hot impact test chamber, mainly for electrical and electronic products, as well as its original devices, and other materials in the temperature drastic changes in the environment of storage, transportation, use of adaptability test. Mainly used for products in accordance with national military standard requirements or user-defined requirements, in the high temperature and low temperature instantaneous changes in conditions, the product's physical and other related characteristics of the environment simulation test, after the test, through the detection, to determine the performance of the product, whether or not it is still able to meet the predetermined requirements, in order to provide product design, improvement, identification and factory inspection with.
The products are beautiful in appearance, reasonable in structure, advanced in craftsmanship, exquisite in material selection, with simple and convenient operation performance and reliable equipment performance.
The equipment is divided into three parts: high temperature box, low temperature box and test box. It adopts unique heat break structure and heat and cold storage effect, the test object is completely static during the test, and the hot and cold air circuit switching method will lead the cold and hot temperatures into the test area to realize the purpose of cold and heat shock test.
◆Using the most advanced measuring device, the controller adopts the large color LCD human-machine touch dialogue type LCD human-machine interface controller, simple operation, easy to learn, stable and reliable, in the English display of the complete system operation status, implementation and set the program curve.
◆With 96 test specifications set independently, the impact time of 999 hours and 59 minutes, the cycle period of 1 to 999 times can be set to realize the automatic operation of the refrigerator to maximize automation, reduce the workload of the operator, can be automatically started at any time, stop the work of the operation;
◆The box left side of the body with a diameter of 50mm of the test holes for external power supply, load wiring test parts. The left side of the box has a 50mm diameter test hole for external power supply and load wiring test parts.
◆It can independently set three different conditions of high temperature, low temperature and hot/cold shock, and when executing hot/cold shock conditions, it can choose two-slot or three-slot and cold punch, hot punch for the shock function, with the function of high and low temperature testing machine.
◆Fully automatic, high-precision system circuit, any machine action, completely P.L.C lock processing, all using P.I.D automatic algorithmic control, high precision temperature control.
◆Advanced scientific air circulation design, so that the indoor temperature uniformity, to avoid any dead space; complete safety protection devices, to avoid any possible safety hazards, to ensure the long-term reliability of the equipment
◆Set the number of cycles and the number of defrost automatic (manual) defrost.
◆The air outlet is detected and controlled by the sensor of the return air outlet, the switching time of the damper mechanism is completed within 10 seconds, and the recovery time of the temperature of the hot and cold shocks is completed within 5 minutes.
◆Status display and curve display in operation, when abnormal condition occurs, the screen immediately and automatically display the fault point and the reason and provide the method of troubleshooting, and found that the input power is unstable, with an emergency stop device.
◆The refrigeration system adopts the design of compound high-efficiency low-temperature circuit system, the refrigeration unit adopts the original imported compressor from Europe and the United States, and adopts the green environmental protection (HFC) refrigerant R507 and R23, which has a zero ozone coefficient.
◆Super safety protection functions: power overload protection, leakage protection, control circuit overload protection, short-circuit protection, compressor protection, earth protection, over temperature protection, alarm signal prompts, etc. The system also has the following functions: power supply protection, leakage protection, control circuit overload protection, short-circuit protection, compressor protection, earth protection, over-temperature protection, etc. protection, alarm sound prompts, etc.
◆The inside and outside of the box is made of stainless steel plate (SUS#304), and there are different kinds of external materials to choose from:
1. Stainless steel surface, such as frequent
wiping along the grain, can make the machine maintain a brand-new appearance for a long time (recommended for such a choice)
2. Special antirust treatment of the steel electrostatic spraying surface, high-grade texture (according to the customer's choice), the surface is made of stainless steel. High-grade texture (according to customer requirements)
Each product is customized according to customer requirements to ensure that the equipment is highly efficient and energy-saving, and on-site commissioning and acceptance, to ensure that the user side of the use of performance.
Folding editorial structure
All functions are controlled by computer, the Department of self-developed software, a good operator interface, so that the user's operation and monitoring are more simple and intuitive can be set up on the screen time and parameters, so that refrigeration, heating, lifting the blue transfer switching, according to the set value automatically.
Cold box, hot box independent control, box door independent of each other, expanding the use of the test box (a box for three purposes).
The heat preservation effect of the product can be fully guaranteed.
The door of the test chamber is interlocked with the circulating fan and the blue drive to protect the safety of the operator, and once the door is opened, the power supply of the circulating fan and the blue drive will be cut off automatically.
There is a standard lead hole tube on the top of the chamber, which is convenient for users to introduce sensor wires, testing cables and other types of leads into the chamber.
Folding edit section control system
Low temperature zone, high temperature zone conversion time is less than or equal to 15 seconds.
The temperature recovery time is less than or equal to 5 minutes.
Collapse Edit Paragraph Conforms to Standards
GB/T2423.1.2-2001 GJB150.5 GB10592-89
Collapse Edit Paragraph Technical Parameters
Collapse Selection
Model(mm)
CLM-WDCJ-100
CLM- WDCJ-300
CLM-WDCJ-500
CLM-WDCJ-010
Dimensions of pre-cooling area of two boxes
450×450×500
600×600×600
800×800×800
1000×1000 ×x 1000
Three box sample area size
450×450×500
600×600×600
800×800×800
1000×1000×1000
Folding performance index
Temperature range
A:-40 B:-55℃~150℃ D:-65℃~150℃
Temperature fluctuation
High greenhouse and low greenhouse ≤±2℃
Temperature fluctuation in sample area
≤±0.5℃(at constant temperature)
Sample area load capacity
20㎏, 30㎏, 50㎏
Folding Control System
Controller
Imported LED digital display (P,I,D+S,S,R.) microcomputer integrated controller
Heating System
All independent system, nickel-chromium alloy electric heater
Refrigeration System
Totally enclosed air-cooled single-stage compression refrigeration system
Circulation System
Circulation System
Low Temperature Resistance p>
Temperature-resistant and low-noise air-conditioning type motor. Multi-blade centrifugal wind wheel
Collapse Edit Paragraph Principle and Structure
Collapse Working Principle
A, low-temperature storage room:The temperature state of the box is determined by the working state of the heater in the air duct, the evaporator, and the fan. After the expansion valve throttling out of the refrigerant into the work chamber after the evaporator, absorb the heat and gasification of the work chamber, so that the studio temperature; gasification of the workpiece by the compressor and compressed into a high temperature, high pressure gas into the condenser is condensed into a liquid, and then by the sieve program, and finally through the expansion valve throttling out of the evaporator into the work chamber to absorb the heat and gasification and then the compressor is sucked into the compression. So the reciprocal loop work, so that the studio temperature down to the set temperature requirements
B, high temperature storage room: the central controller from the temperature-sensitive components to detect the instantaneous signal, and set the temperature signal to compare, get a comparative signal, the output signal from the instrumentation PID logic circuit to control the solid-state relay conduction or shutdown time proportional to adjust the size of the heater output power, so as to achieve the purpose of automatic temperature control.
C
C, impact temperature testing room: by the instrumentation automatically control the high and low temperature valve, switch between low or high temperature storage room, respectively, and high temperature box or low temperature box to form a closed-circuit air circulation system, to quickly reach the target temperature of the test.
The temperature state in the test chamber is determined by the working state of the heater, evaporator, and fan in the air duct. Test chamber work chamber using forced axial flow "dispersive" type back to the circle of wind work, can greatly improve the operation of the equipment fluctuations, uniformity and other parameters.
Adopted materials and components
High and low temperature impact test chamber consists of the following parts:
High-temperature storage room
Low-temperature storage room
Test box box box
Control system
Refrigeration system
Heating system
Airway system
Drainage system
Folding test box
Working chamber
Test box
High and low temperature impact test chamber
Folding test box box
A, the impact box using the upper, middle and lower box structure, the upper part of the high-temperature box, the lower part of the low-temperature box, the middle box for the test box, the low-temperature system is located in the left part of the studio, the electrical control cabinet is placed on the right side of the test box, easy to operate.
B, the inner wall of the test box are made of SUS304 # stainless steel plate, the box shell is made of high-quality imported impermeable steel SUS304 # CNC punching machine punching system.
C, high-temperature box insulation materials using ultra-fine glass fiber, low-temperature box insulation materials using polyurethane foam, asbestos board and ultra-fine
glass fiber, insulation effect is good, the outer surface of the test box does not frost, does not condense.
D, the bottom of the low-temperature box has a condensate drain
E, the impact box box body has a φ25 test hole.
Folding control system
Mainly consists of operation panel, central controller, various keys and switches, status indicator lamps, and execution of electrical appliances.
Folding refrigeration system
A, the original imported compressor;
B, equipped with automatic and manual defrost circuit;
C, slope type FIN-TUBE evaporator;
D, the original imported solenoid valve, filter drier and other refrigeration components;
E, the inner helix type K-TYPE refrigerant copper tubes;
E, the inner helix type K-TYPE refrigerant copper tubes;<
F, U-TYPE high-speed electric heat pipe;
G, the use of water-cooled condenser (with cooling tower);
H, the use of environmentally friendly refrigerant 134a, 404A, and R23;
I, other accessories, repair valves, electronic automatic switching expansion valves and electromagnetic switches.
J, the heating system is located in the air duct system, consisting of multiple sets of nickel-chromium alloy threaded electric heaters and polytetrafluoroethylene aerospace silver-plated wire guard.
4, circulation system and drainage system:
A, the use of imported multi-wing centrifugal return circle fan, imported motors;
B, FLOW THROW air supply, level diffusion of vertical heat exchange curved back to the circle;
C, the drainage system using the return of vortex-shaped drainage and U TYPE deposition device;
D, multi-wing fan blade temperature The field effect is evenly distributed;
E, STAIN LESS lengthened axis wind volume is appropriate.
Folding editorial materials and components
1, the working chamber body and air conditioning room air supply and exhaust aperture plate are used in the international general SUS304 # stainless steel plate manufacturing, the studio shell are imported impermeable steel SUS304 # CNC punching machine punching made.
2, the central controller imported South Korea "Saintyear" TEMI880NLCD LCD touch screen programmable dual-loop wisdom computer temperature controller.
3, digital over-temperature protection device.
4, the implementation of electrical appliances
A, France "Schneider" AC contactors, thermal relays
B, South Korea "Meilan Geran" circuit breakers, leakage protector
C, the United States "Langning" solid-state relays
D, Japan "Omron" small relays
5, temperature-sensitive components: extended mask type PT100 platinum resistor.
6, air-conditioning box heating wire can be long-term resistance to high and low temperatures of polytetrafluoroethylene aviation silver-plated wire.
7, the use of nickel-chromium alloy threaded heater.
8, refrigeration machine with hermetic compressor (Italy)
9, refrigeration accessories used
A, Italy produced water condenser
B, Sweden "Avaraval" plate condensing evaporator
C, Italy "R& C Kokusai Chuang" high-efficiency finned evaporator
D, Sweden "Dazhou" pressure Protection switch, hand valve
E, the United States "Sporlan" or the United States "ALCO" dry screening program
F, the United States "AC&R" muffler
G, Germany "ESK" or the United States "ALCO" oil separator
H, Italy "Castor" solenoid valves
J, Danish "Danfoss" check valve
J, Denmark "Danfoss" check valve
H, "R&C" Kokchong "efficient finned evaporator
D, Sweden "Oshima" pressure J. Danish "Danfoss" one-way check valve
10, Italy's hermetic compressor (or France's "Taikang").
11, impact test auxiliary refrigeration: liquid nitrogen
12, sealing materials can be long-term resistance to high and low temperatures of the environmentally friendly silicone rubber strip seal.
13, insulation material using rigid polyurethane foam and glass fiber.
Folding editorial features and advantages
Advanced and reliable control system:
1, advanced energy-saving control design (see later "economic and efficient operation mechanism");
2, the use of internationally renowned brands of electrical appliances, to improve the content of the equipment in order to ensure that the implementation of the components of high reliability.
Powerful control computer:
1. Impact temperature program controller: the original imported 256-color LCD touch screen Perspex direct key type controller, in English, Chinese, said 7.5 "of the wide viewing angle, high contrast with adjustable backlighting function of the large-scale LCD liquid crystal display controller.
A, controller specifications:
Accuracy: ± 0.1 ℃ +1digit.
Resolution: ± 0.1.
With the upper and lower limits of standby and alarm function.
Temperature input signal: T type thermocouple.
P.I.D control parameter setting, P.I.D automatic calculation.
B, the screen display function:
The use of graphic control software screen to talk to the type, without the need for key input, the screen directly touch the options: including program settings, curve display, history, manual operation, automatic operation, auxiliary settings and so on.
With a separate program editing screen, you can enter the temperature, time and loop times.
The temperature program has the function of instantly displaying the program curve execution.
Displays fault status and explains troubleshooting methods.
The screen can be adjusted for backlighting, and the screen display protection function can be set for timer and shutdown.
Chinese and English can be switched.
C, program capacity and control functions:
Can be used in the program group: the maximum of 96 PATTEN (that is, 96 test specifications can be set and stored alone).
Repeatable commands: up to 999 times.
SEGMENTS time setting 0~99Hour59Min.
Programming is based on a dialogue setting function.
8 sets of program interconnections.
With the program memory of power failure, it will automatically start and continue to execute the program after power resumption.
Automatic temperature compensation for high and low temperature shock.
When the program is executed, the graphic curve can be displayed instantly.
Defrost time, number of times and defrost temperature setting and execution function.
With the function of starting and shutting down by appointment.
With date and time adjustment function.
D, the test chamber with R-485 computer interface, and can use the computer to realize the A ~ H control function, and can save the impact process information (there should be the date, hot and cold shock time, shock temperature and other information;)
High-quality refrigeration configuration:
Environmental test equipment to obtain a lower test temperature, the current more mature way is the compound refrigeration. The principle of this way are similar, the key depends on the configuration of the refrigeration system.
1, refrigeration compressor:
The core of the refrigeration system is the refrigeration compressor, we choose the world famous French "Taikang" industrial refrigeration compressor.
2, imported oil separator and refrigeration oil
Refrigeration compressor whether there is enough reasonable high-quality refrigeration oil, will have a direct impact on its life expectancy, refrigeration oil into the refrigeration system, especially into the heat exchanger will greatly reduce its performance. For this reason, the system needs to be set up in the oil separator, according to my unit has been the use of imported oil separator, Germany "ESK" and the United States "ALCO" oil separator with the best performance, the Japanese "Sun" brand freezer oil performance, viscosity is the most stable.
3, high-efficiency condensing evaporator
Adjacent pair of stainless steel sheet corrugation in the opposite direction, the corrugated back line intersects each other to form a large number of contact welding points, due to the complex contact intersection of the network channel so that the two sides of the formation of turbulent flow of fluids, increased to improve the strength of the heat transfer, while the strong turbulence and the smooth stainless steel surface of the brazed plate heat exchanged on the inner surface of the flow channel is not easy to scale, the use of the heat exchanger after not only the system resistance is also the best. Heat exchanger is not only the system resistance is also reduced, and to overcome the previous large domestic low temperature test box the size of this component, poor heat transfer, low efficiency and other shortcomings.
4, high-efficiency finned evaporator
Finned evaporator than the general evaporator heat transfer efficiency is 30% higher than the advantages of beautiful, compact, fast cooling.
5, refrigeration accessories
This equipment refrigeration system, other auxiliary parts, such as solenoid valves, screening program, etc. Our unit are imported brand-name parts to further improve the reliability of the equipment.
Well-made low-temperature process:
1, the equipment refrigeration system in order to reduce the noise of the equipment during operation, our company in the design of the exclusive use of imported muffler, which is conducive to improving the user's working environment.
2, low-temperature connection piping using high-quality oxygen-free copper tubing, nitrogen-filled welding, high-pressure leakage prevention process to ensure that the welding quality; the length of the pipeline, inclination, slope and direction have been strictly calculated to achieve the best refrigeration effect; threaded connection using the U.S. "Loctite" anaerobic adhesive sealing, basically eliminating the phenomenon of domestic low-temperature test equipment Freon leakage, and so on.
3, efficient and economical operation mechanism (when the impact box only for high and low temperature test)
As a result of the use of axial dispersion wind circulation system, the working temperature of 40 ℃ and above the warming section and the constant temperature section can not open the refrigeration system, thus saving part of the operating costs (general manufacturers of large-scale high and low-temperature test equipment is often centrifugal wind circulation system. Because the centrifugal fan in the process of operation, their own work, producing thermal effects; coupled with centrifugal fan wind pressure, air friction will also produce thermal effects, according to preliminary statistics, only these two thermal effects will make the studio temperature rise up to 63 ℃, so when you have to do 63 ℃ and the following temperature point of the thermostatic test must be turned on the refrigeration system in order to make the work room temperature can be constant, between 40 ℃ ~ 63 ℃ Equipment operation is quite uneconomical).
General manufacturers of high and low temperature test equipment, low-temperature constant temperature is only the use of simple hot and cold against the big refrigeration big heating, so that users run the equipment is very uneconomical. I take the new refrigeration energy regulation technology, that is, the central controller according to different temperature points automatically adjust the refrigeration system to produce economic energy, that is, economic energy against economic heat, so that the equipment operation is always in a relatively low-power state.
Based on the above two points, this equipment if running for 10 years, 200 days a year, 8 hours a day, of which 4 hours to do high temperature (of which 2 hours to do between 45 ~ 63 ℃ constant temperature), 4 hours to do the low-temperature, by our preliminary estimates: according to the mainland China Guangdong Province, the industrial electricity 1.2 yuan/degree calculations of this equipment running for 10 years can save electricity costs of about 195,000 yuan, that is, between the years of 10! This equipment is invisible for the use of units to create a profit of about 195,000 yuan.
3, perfect safety protection devices
Control system detects the following protection device (part) action, it will automatically cut off the power to cut off the work of the machine, and sound and light alarm prompts.
A, system control circuit fuse;
B, system overcurrent protection device;
C, with no fuse protection switch;
D, over-temperature protection device;
E, refrigeration compressor overload protection device;
F, the compressor high and low voltage protection switch;
G, phase protection switch;
G, phase protection switch.
H, Fault indicator;
I, Emergency stop switch;
J, Controller setting error display and warning.
Equipment use conditions
1, ambient temperature: 5 ℃ ~ 35 ℃
2, relative humidity: ≤ 85% R.H
3, atmospheric pressure: 86 ~ 106K three Main accessories: (the following please fill in the supplier, thank you!)
4, no strong vibration around, no strong electromagnetic field effects, no high concentration of dust and flammable, explosive, volatile, non-corrosive substances, no direct sunlight or other heat sources of direct radiation (quite important).
5, the test chamber should be placed in a well-ventilated test room level, there should be at least 1.5 meters of space around for operation and maintenance.
6, near the test chamber should be suitable for the discharge of the test chamber overflow water gutter.
Equipment Requirements:
1. Power supply for the machine a. Power supply: AC3 ￠ 5W 380V 50/60HZ.
※ Voltage variations allowable value: ±10% of the fixed voltage.
b. Maximum load capacity: 20 KVA.
c. Maximum current: 26 A.
2. Chiller cooling water equipment: a. Inlet and outlet pipes: 2/1inch (60A) SGP.
b. Minimum necessary water volume: 9900L/hr (at cooling water temperature of 32 ℃).
c. Inlet water pressure: 1.0~4.0Kg/C㎡G.
※Cooling water tower screening program is provided by our company.
Please install a pressure reducing valve if the inlet water pressure is greater than 4.0Kg/C㎡G, and it is recommended to install a pressure gauge, thermometer and bypass circuit on the cooling water piping. ※In order to keep the state of the freezer for a certain amount of time, we have to add pressure-type flow adjustment valve on the device, so please consult with both sides of the cooling tower side of the water pressure, water temperature and water volume control.
3. Natural drain: a. Indirect drain: VP30 1pc.
※There shall be no bulge in the middle of the drain pipe, and there shall be no extreme inclination of the house floor.
※The drain pipe is provided by our company, please provide the drain port (￠20㎜).