Main functions of the device:

The cold and hot shock testing machine is suitable for aerospace products, information electronic instruments and meters, materials, electricians, vehicles, metals, electronic products, various electronic components, wires, cables, etc. to test their various performance indicators and quality management in High and low temperature rapid alternating environments

Performance indicators and system composition of cold and hot shock testing machine

Project Description

Product Name: Thermal Shock Tester (Three Box Type)

Model GC-CJ3-300A

The sample restriction cold and hot impact testing machine equipment prohibits the testing of flammable, explosive, and volatile substance samples; Testing for storing samples of corrosive substances, testing for storing organisms, testing and storing samples of strong electromagnetic emission sources

Volume, weight, and size

Nominal volume 308L

Effective dimensions of the box in the testing area: 700 × 700 × 630 W × H × D (mm)

The outer box size is approximately 1500 × 1800 × 1700 W × H × D (mm)

Weight 1200 kg

Noise level within 75db (measured at a distance of 1 meter from the front of the machine and 1.2 meters from the ground)

Maximum power 35KW

Maximum current 5*

Power supply conditions and sources

AC380V three-phase four wire+protective grounding

Voltage allowable fluctuation range: ± 10% V

Allowable frequency fluctuation range: (50 ± 0.5) Hz

TN-S power supply or TT power supply

The grounding resistance of the protective grounding wire is less than 4 Ω

Require users to configure corresponding capacity air or power switches for the equipment at the installation site, and this switch must independently control the use of the equipment

performance index 

Functional requirement 1: (Air) indoor space cooling and heating;

2. According to the temperature setting, the indoor space reaches the set temperature

3. Divided into three parts: hot storage area, cold storage area, and experimental area

4. Three independent zones, temperature switching through air doors

Environmental conditions for use: temperature range of 0 to+35 ℃, relative humidity ≤ 85%

Meet the testing standards

Test Method GJB150.*-2009 Temperature Shock Test

GB/2423.13-2002 Temperature Shock Test

GJB360B-2009 Temperature Shock Test

GB2423.1-2008/IEC6008-2-1-2007 Environmental testing for electrical and electronic products Part 2: Test methods Test A: Low temperature

GBT 2423.2-2008 Environmental Testing for Electrical and Electronic Products - Part 2: Test Methods - Test B: High Temperature

GBT 10589-2008 Technical Conditions for Low Temperature Test Chamber

GBT 11158-2008 Technical Conditions for High Temperature Test Chamber

temperature range 

Temperature Range: High Temperature Zone Temperature Range: RT~200 ℃

Low temperature range: RT~-70 ℃

Temperature range of testing area: -70~200 ℃ (actual placement area of the tested workpiece, i.e. actual size of the inner box)

Impact range: High temperature: 60℃～ 150℃

Low temperature:- 10℃ ～ -55℃

Room temperature: indoor temperature

Control accuracy analysis accuracy: 0.1 ℃ Temperature fluctuation: ±1℃

Distribution uniformity: ± 2.0 ℃ Temperature deviation: ± 1 ℃

Preparation time for work: Heating time in the heat storage area: from room temperature to 200 ℃, about 80 minutes

Cooling time in the cold storage area: from room temperature to -70 ℃, about 90 minutes

Impact temperature change rate 150 ℃~-55 ℃ temperature change rate 3~5s

-Temperature range of 55 ℃ to 150 ℃ with a rate of 3-5 seconds

Temperature recovery time

Impact conversion time within 10 seconds

Test area temperature recovery time: 5 minutes

Impact process (as shown in the figure)

Green represents the heat storage curve in the high-temperature zone, red represents the impact curve in the experimental zone, and blue represents the cold storage curve in the low-temperature zone

Note: The load per cubic meter shall not exceed the heat capacity of 35kg/m3 steel

Note: The above performance indicators are measured under the conditions of an ambient temperature of+25 ℃, relative humidity ≤ 85%, and no sample

structure characteristics

Box structure, inner box material: 304 # stainless steel, 1.2mm thick

Outer box material: cold-rolled steel plate with advanced baking paint treatment, 1.2mm thick

Insulation material: polyurethane foam adhesive+glass fiber cotton 150mm thick

Box door single door

Explosion proof handle

The air conditioning channel is equipped with a high-temperature zone, a low-temperature zone air room, a circulating air duct, and a stainless steel circulating fan. Through the switching of air doors, heat and cold are evenly blown out from the inside of the air duct, dissipating the temperature stored in the high-temperature and low-temperature tanks to the testing space, thereby achieving rapid temperature alternation and uniform indoor temperature distribution

Lead test hole openingΦ 50mm test hole, accompanied by corresponding insulation fittings and specialized sealing soft plugs

Control panel: Korean ternary TEMI2700S LCD touch programmable controller

Main power switch, operation indicator light, abnormal indicator light, end indicator light, defrost indicator light, power indicator light, RS-232 communication interface

Low temperature mechanical room evaporator, circulating fan, drainage device, cold storage plate, heater, circulating fan, volute shell

High temperature mechanical room heater, circulating fan, heat storage plate, pressure balance port, circulating fan, volute shell

Distribution control cabinet main power circuit breaker, controller, distribution board, cooling fan, over temperature protector, cylinder, pressure protector, liquid storage tank, air-cooled condenser, refrigeration unit

The heating system adopts a scale heat dissipation heating tube P I. D controls heating to achieve temperature equilibrium

The heater is made of exposed spiral nickel chromium heating wire and insulated ceramic bracket, with low surface load, sensitive temperature control, and small temperature hysteresis.

Heater control mode: PID+PWM+ SSR， Solid state relays are used for contactless zero crossing triggering to drive heaters, with no contact sparks or noise, and a long service life.

The cooling system adopts a water-cooled heat exchanger

The cooling tower adopts Taiwan Liangji cooling tower, which uses water circulation for heat dissipation, with a flow rate of 8 tons/hour (optional)

Transportation method: Whole machine transportation

Test material rack: Stainless steel SUS # 304 grid type storage rack, 2 pieces (load capacity ≤ 30kg/piece)

Adjustable spacing of 40mm

The pre cooling zone, preheating zone, and testing zone are independent of each other in terms of working mode. The test products do not need to be moved between the three boxes through air doors. When the ambient temperature is impacted at room temperature, the ambient temperature is introduced into the testing space through a blower to eliminate heat or cold from the testing space. At the same time, the air doors of the high and low temperature slots are closed; When impacting low temperature, the air doors of the high and normal temperature slots are closed, and the low temperature slot is connected to the test chamber, instantly introducing the pre stored cooling capacity into the test chamber; When impacted by high temperature, the air doors of the low and normal temperature slots are closed, and the high temperature slot is connected to the test chamber, instantly transferring the pre stored heat into the test chamber. Thus achieving the goal of rapid temperature alternation

electric control system 

Imported controller for temperature control

(Korean ternary TEMI2700, 7-inch true color LCD touch capacitor touch screen controller, can display temperature and control in three areas, with high display accuracy and convenient use.)

The screen display function adopts a human-machine dialogue mode, using touch input and control

Temperature setting (SV) actual (PV) value displayed directly

Can display the execution program number, segment number, remaining time and number of cycles, and display the running time

Display of program execution action status

Language conversion can switch between complex Chinese/English

5.7-inch LCD color display screen

Program capacity and available program quantity for control functions: up to 120 groups, with the ability to set connections between programs for use

Repeatable command execution: Each command can be executed up to 9999 times

Has high temperature start/low temperature start function

Equipped with preheating and pre cooling functions During program execution, there is a skip and hold function

Equipped with 6 sets of PID parameter settings

Equipped with power-off program memory, automatically starts and continues to execute program functions after power restoration

Equipped with temperature waiting timer function

Data acquisition, export, and graphic viewing functions

Equipped with scheduled startup and shutdown functions

Equipped with date and time adjustment functions

Button and screen lock (LOCK) function

Can be used for automatic cyclic impact or manual selective impact

Fault medical record display function

Zone 2 or Zone 3 impact, cold or hot start function

The screen can be adjusted for backlight and the backlight time can be set

PID automatic calculation and FUZZY control

RS-232

The communication interface can display curves and obtain data

Can be used as a monitoring and remote control system

Operation mode: Program loop mode

Set range temperature: Adjust according to the temperature working range of the device (upper limit+5 ℃, lower limit -5 ℃)

Display resolution temperature: 0.1 ℃; Time: 0.1 minutes;

Input thermocouple

Circulating fan, low-noise multi wing centrifugal fan

Imported nickel chromium alloy electric heater

Heater control method: contactless equal period pulse width modulation, SSR (solid-state relay)

Control method: anti integral saturation PID

BTC Balance Temperature Control Method (Temperature Test Equipment)

Supplementary functions

(Standard configuration) Fault alarm and cause, processing prompt function

A fail-safe mechanism 

Upper and lower temperature protection function

Self diagnostic function.

Automatic stop function

Software usage environment

IBM PC compatible machine, with a P Ⅱ or above CPU, 128MB or above memory, Simplified Chinese Windows 2000 or Simplified Chinese Windows XP operating system

Temperature measurement T thermocouple

USB function

(Optional) One USB flash drive (with a capacity of not less than 1G) and one PC specific software CD.

Develop a test program using PC specific software and save it to a USB drive. Then, retrieve the test program from the USB drive and store it in the controller; The programs inside the controller can also be transferred to a USB drive and stored on a PC for analysis and management.

The test curve data recorded in the controller can be transferred to a USB drive. Directly display and print test data/curves through PC specific software (with non modifiable markings); Or convert the recorded data into Access data files that can be read by Microsoft Office.

The test curve data recorded by the controller is: 2-channel temperature - set temperature and measured temperature; 2-channel humidity - set humidity and measured humidity (temperature and humidity testing equipment)

refrigeration system

In order to ensure the cooling rate and minimum temperature requirements of the laboratory, a binary duplex refrigeration system is used in this laboratory. The duplex system includes a high-temperature refrigeration cycle and a low-temperature refrigeration cycle, and heat exchange is achieved through an evaporative condenser

The refrigeration compressor adopts a low-temperature compressor imported from Germany

Cooling method

Water cooled shell and tube condenser, cooling tower for heat dissipation

Evaporator finned tube heat exchanger

Evaporative condenser stainless steel brazed plate heat exchanger

Imported high-precision pressure controller for measuring refrigeration pressure, measuring refrigeration pressure and sending pressure signals to the central controller

Condenser water-cooled heat exchanger

cooling tower 

Low noise air-cooled cooling water tower

In order to facilitate better and more stable operation of the equipment, a chiller is used. The chiller is installed indoors to avoid the problem of water pipe icing in winter, and is uniformly configured by the seller

Circulating water pump, low-noise pipeline pump, strong water supply circulation

Throttle device thermal expansion valve, thickened capillary tube

Fully imported refrigeration accessories

The oil separator separates the frozen oil droplets mixed with the high-temperature and high-pressure refrigerant gas discharged from the compressor, and returns them to the compressor's curved track chamber for lubrication and cooling purposes

The dry filter absorbs residual moisture and acidic substances in the refrigerant of the refrigeration system, and filters out solid impurities, copper chips, etc. in the system, protecting the normal operation of the expansion valve and capillary tube from ice blockage and dirty blockage

Advantages and characteristics of refrigeration system

A、 The entire system pipeline undergoes a leak test with ventilation and pressure of 22kg.

B、 The heating and cooling systems are completely independent.

C、 Equipped with our company's professional technical features, it prevents damage to the system caused by high-temperature and high-pressure airflow in the same flow refrigeration unit.

D、 All freezing system action programs are completely controlled by a microcomputer controller.

E、 There is a water tray at the bottom of the compressor, which can collect the condensed water generated by frosting.

F、 The compressor is equipped with a PTC temperature sensor, which provides over temperature protection when the compressor exceeds the temperature limit.

G、 The compressor is equipped with an oil pressure protector to achieve oil pressure protection.

H、 The high and low pressure protection device monitors the pressure of the refrigerant during the operation of the equipment. Once the refrigerant pressure is higher than the system's limit pressure or lower than the minimum pressure set by the system, an alarm is immediately issued and the power is cut off until the fault is resolved.

I、 The refrigeration system uses imported brand accessories, which are reliable in quality and ensure the stability of the system.

Environmentally friendly refrigerants R404A/R23 are used as the refrigerant for this refrigeration system

Safety protection device

Overheating of refrigeration system compressor

Compressor overcurrent

Compressor overpressure

Overheating of condensing fan

Adjustable over temperature protection for the test chamber

Extreme overheating of air conditioning channel

Fan and motor overheat relay

Other main power phase sequence and phase loss protection

Leakage protection

Overload and short circuit protection

Protection against high environmental temperature

Usage conditions

The user guarantees the following conditions:

The environmental temperature of the equipment should be maintained within 0 ℃ to+35 ℃

Relative humidity: ≤ 85％

Requirements for storage environment: The equipment environment temperature should be maintained within 0 ℃ to+45 ℃

When the ambient temperature is below 0 ℃ (when the equipment is stopped for a long time), the remaining water in the equipment should be drained completely to prevent the water in the pipeline from freezing and damaging the pipeline

Installation site requirements: 1. Please confirm with the customer the required dimensions for the installation equipment location

2. The distance between the left, right, and rear wall panels of the test chamber and the wall shall not be less than 800mm, and the distance between the front panel and the wall shall not be less than 1000mm

2. Is it possible to enter the entrance, passage, elevator, etc. during equipment transportation to avoid affecting the progress of your company's project.

Acceptance criteria and third-party verification

1. Acceptance criteria: Technical indicators shall be in accordance with the "Technical Agreement" signed by both parties; The inspection method shall be in accordance with the GB/T5170-2008 standard;

2. Acceptance method: Formal acceptance shall be conducted on the site of the purchaser. If the purchaser needs to invite a third party (a qualified technical quality supervision department) to participate in the acceptance, the cost shall be borne by the purchaser. If the first acceptance is not qualified, the expenses incurred during the second acceptance after improvement by the supplier shall be borne by the supplier.