Which is a good fully automatic mixed gas corrosion test chamber

1Gas corrosion test chamberRefer to the standard GB/T 2423.51-2000; Design and manufacture for mixed gas testing of SO2, H2S, NO2, and CL2 gases.

2. The equipment utilizes a mixture of SO2, H2S, NO2, and CL2 gases to accelerate the corrosion of materials or products in a certain temperature and relative humidity environment, reproducing the degree of damage suffered by materials or products within a certain time range. Equipment can be used to assess the ability of materials and their protective layers to resist mixed gas corrosion, as well as to compare the process quality of similar protective layers. It can also be used to assess the ability of certain products to resist mixed gas corrosion.

3. The equipment can reach the specified temperature and humidity points in the test workspace and maintain them constant. Conduct corrosion tests on materials or products by continuously introducing a certain concentration of mixed gas into a box with a specified volume, while keeping the concentration, temperature, and relative humidity constant.

The material used to manufacture this equipment is A3 steel plate sprayed with plastic, inner liner flame retardant PP board, high temperature resistance, does not react with SO2 and other gases, does not absorb several mixed gases, and does not affect the test results. In the design of this equipment, the test chamber is a non negative pressure structure to avoid gas leakage from the chamber caused by seal aging and other issues. The mixed gas flows uniformly inside the box. Moreover, the design takes into account the generation of condensation water at the top, inner walls, and other parts of the equipment. Therefore, the top of the box is designed with a 120 degree angle, so that condensation water will not drip onto the sample during the testing process and affect the test results.

4. The oversized box door is made of tempered glass and sealed with corrosion-resistant silicone rubber, which is also corrosion-resistant, easy to clean, and leak free. During the experiment, the indoor test conditions can be clearly observed from the outside without affecting the test results. The box door and body are sealed with corrosion-resistant silicone rubber to prevent gas leakage, which may affect the test results and corrode other equipment in the room, and even cause harm to the test operators.

5. The box is heated using a titanium metal heater, which heats up quickly and distributes temperature and humidity evenly. The sample rack is designed according to national standards and can also be hooked. Various gases are first configured to the required concentration according to the requirements, and then released from the steel cylinder through pressure reduction. They are then controlled by corrosion-resistant solenoid valves and enter the mixing box through a flow meter. Afterwards, they enter the bottom of the box together with the temperature and humidity air in the air conditioning cabinet through the diversion pipeline, and pass evenly through the box. The concentration can be detected and controlled by various gas concentration detectors.

The refrigeration system of the equipment is installed in the air conditioning cabinet on the left side of the equipment, mainly for cooling and dehumidification purposes.

7. The equipment control system is designed on the right side of the box and is easy to operate. The specially designed corrosive gas filtration device can quickly and effectively filter the residual gas in the box after the test is completed, and the residual gas will not pollute the atmosphere, making it easy to operate.

2、 Main technical specifications and parameters of the equipment

1.型号： RD/QF-150 RD/QF-300 RD/QF-600 RD/QF-900

2.Specification: 500 × 500 × 600 550 × 600 × 900 750 × 850 × 950 1000 * 900 * 1000

3.Dimensions: 800 × 900 × 1100 900 × 1000 × 1450 1200 × 1300 × 1500 1520 × 1350 × 1620

4.Temperature range:+20 ℃~+35 ℃

5.Relative humidity: (60% -95%) ± 5% R · H

6.Temperature uniformity: ≤± 2 ℃

7.Temperature fluctuation: ± 0.5 ℃

8.Test time: 0-999 H, M, S adjustable

9.SO2 concentration: adjustable according to the ratio of steel cylinders

10.NO2 concentration: adjustable according to the concentration ratio of the steel cylinder

11.H2S concentration: adjustable according to the ratio of steel cylinders

12.CL2 concentration: adjustable according to the cylinder ratio concentration

13.Gas generation method: cylinder method

14.Test gas flow rate: adjustable according to test requirements

15.Sample rack: meets standard requirements

16.Operating environment temperature: 5 ℃~35 ℃

17.Operating environment humidity: ≤ 85%;

18.Power requirement: AC 220V

3、 Test box structure

1.Gas corrosion test chamberThe shell is made of steel plate sheet metal processing and welding, and the appearance is sprayed with plastic. The joints of the entire box are smooth and flat, the box structure is compact, and the appearance is shiny,

2. The equipment is designed with two sets of enclosures, and the temperature and humidity inside the enclosure are controlled by an external temperature and humidity air conditioning cabinet to create a specified temperature and humidity environment, which enters the enclosure and circulates inside the enclosure. A set of air conditioning system is designed for the equipment, which includes a refrigeration system, a heating system, and a humidification system. The air conditioning system produces a temperature and humidity that meets the test requirements. At the same time, a certain concentration of mixed gas is input and mixed evenly in the equipment mixing room before entering the box. The flow rate is controlled to reach the specified range, and the concentration can be detected and effectively controlled by various gas concentration detectors to reach the specified range. The equipment heats up quickly and the temperature and humidity are evenly distributed. The heating and humidification element adopts titanium metal heating tubes, which are corrosion-resistant and have a long service life. The box door is made of tempered glass, making it easy to open and close. Using corrosion-resistant silicone rubber seal to ensure that gas does not overflow. The design of the sample frame structure follows national standards and can also use hooks, which have a large load-bearing capacity and are easy to place the test samples. After the gas comes out of the steel cylinder, it is depressurized and then controlled by a corrosion-resistant solenoid valve to enter the mixing box through a flow meter. Afterwards, it enters the diversion pipeline at the bottom of the box together with the temperature and humidity air in the air conditioning cabinet, and passes evenly through the box. Equipped with over temperature protection and low water level warning to ensure safe use.

The refrigeration system of the equipment is installed at the bottom of the equipment, mainly for cooling, constant temperature and dehumidification during summer use.

4. The equipment control system is designed on the right side of the box and is easy to operate. The specially designed gas filtration device can quickly and effectively filter the residual gas inside the box after the experiment is completed, and the residual gas will not cause pollution to the atmosphere, making it easy to operate.

4、 Control system

1.Temperature and humidity controller: Imported from South Korea, the "Three Yuan" high-precision touch screen temperature controller is stable and does not drift during long-term operation. The device can set and display temperature, humidity, four gas flow rates, and air flow rate;

2.Time relay: adjustable from 1s to 9999h, m, s;

3.Temperature and humidity sensor: PT100 high-precision dew point testing sensor is used for humidity testing, and an anhydrous electronic sensor is employed.

4.Equipped with four types of gas imported from the United States anti-corrosion quality flow controllers;

5.Execution components: ABB or Schneider AC contactors, small relays, solid-state relays

5、 Refrigeration and dehumidification system

1.Compressor: 1 set of fully enclosed French Taikang, which can reach a temperature of 25 degrees Celsius and a humidity of 70% during summer work;

2.Cooling method: air cooling;

3.Refrigerant: R404;

4.The entire system pipeline undergoes a 48 hour leak detection test with ventilation and pressurization;

5.The heating and cooling systems are independent;

6.Internal spiral refrigerant copper tube;

7.Slope evaporator;

8.The dry filter, refrigerant flow window, repair valve, oil separator, solenoid valve, and storage tank are all imported original parts.

6、 Execution standards

The experimental equipment shall refer to GB/T 2423.51-2000; Environmental Testing for Electrical and Electronic Products, Part 2 Test Methods, Test Ke: Designed and manufactured according to the standard "Corrosion Testing of Flowing Mixed Gases", suitable for corrosion testing of mixed gases of sulfur dioxide, hydrogen sulfide, nitrogen dioxide, and chlorine gas (note: as long as the box has undergone hydrogen sulfide testing, no other separate tests can be conducted, except for hydrogen sulfide testing).

Compliant with GB/T2423.19-2013 Environmental Testing Part 2: Test Methods Test Kc: Sulfur Dioxide Test for Contact Points and Connections

GB/T2423.20-2014 Test Kd - Hydrogen sulfide test method for contact points and connectors and VW8000 standards

7、 Protection system

Overall equipment overheating, fan overheating protection, overall equipment under phase/reverse phase, refrigeration system overload, refrigeration unit overpressure, overall equipment timing, other protections such as leakage, operation indication, automatic shutdown after fault alarm.

8、 Random data and spare parts

1.Certificate of conformity, warranty card, packing list, user manual, instrument and electrical user manual, and electrical schematic diagram of the equipment;

2.A package of specialized substances for filtering residual gases;