High voltage seismic and wear-resistant thermocouple Shangyi Third Factory

Due to the use of different high-strength wear-resistant protective tubes and surface modification measures for different temperature ranges and tested media, this series of products is suitable for temperature measurement of flowing powders and materials such as petrochemical, coal conveying systems, fluidized bed boilers, cement clinker, and refractory materials that have severe wear on the protective tubes, forming a composite tube type solid structure. Further improve the service life of thermocouples. Its performance is superior to current wear-resistant thermocouples and has won praise from users. The wear-resistant material of its special process completely solves the service life of temperature measuring thermocouples in circulating fluidized bed boilers without affecting temperature measurement lag. The protective sleeve has many technologies such as wear resistance, high-temperature oxidation resistance, sulfurization resistance, corrosion resistance of cement materials such as liquid iron powder and limestone, erosion resistance, and vibration resistance, making the service life of temperature measuring thermocouples generally one to two years. At industrial sites such as ball mills and cement factories, armored or high-temperature armored core bodies are used, paired with wear-resistant sleeves of different materials and specifications. They have good wear resistance, vibration resistance, and thermal shock resistance. In various harsh environments with extremely high wear levels, the service life of products can reach several times that of ordinary products, greatly improving production efficiency and reducing cost consumption. Adopting special heat-resistant and wear-resistant alloy materials as the outer protective tube and wear-resistant head for measurement, and equipped with an armored core body inside, it can not only have high corrosion resistance to fly ash particles, but also be used for long-term temperature measurement between 0 and 1400 ℃. It is an ideal temperature sensor used in high-temperature and wear-resistant environments in the metallurgical industry. Wengyuan WRER2-01 medium temperature and medium voltage thermocouple, WRNR2-01, WZPK2-435SA, WRR-120B, WRN2-130-F, WRN-430-F, WRN-330-F, JB/T5219-91. WZPK-366S, WZPK2-365SA, WZPK2366SA, WZPK-463S, WZPK-464S, WZPK-465S, WZPK-465S, WZPK-466S, WZPK-465SA. The principle of cement high-temperature wear-resistant thermocouple copper drum is made of special heat-resistant materials and wear-resistant alloy materials as the temperature measurement outer sleeve and wear-resistant head. Depending on the measured temperature, the selected wear-resistant protection tube material also varies. It is connected by flange or thread, and can be used for temperature measurement in the range of 0-1400 degrees Celsius for a long time. It is used in metallurgy, chemical industry, cement plants, power plants, etc The fluidized bed boiler industry is an ideal temperature sensor for measuring high temperature and wear-resistant environments, with a high service life of up to two years. The components include wear-resistant head, connecting rod, threaded connection or flange, junction box, and armored inner core. The wear-resistant head should be selected based on the actual temperature at the production site, and the connecting rod, threaded connection or flange should be selected based on the presence of corrosive media on site.

The basic principle of thermocouple temperature measurement is that two different materials of conductors form a closed circuit. When there is a temperature gradient at both ends, there will be current passing through the circuit, and there will be an electromotive force between the two ends - thermoelectric electromotive force, which is called the Seebeck effect. Two homogeneous conductors with different compositions are thermoelectric electrodes, with the working end at the higher temperature and the free end at the lower temperature. The free end is usually at a constant temperature. According to the functional relationship between thermoelectric electromotive force and temperature, a thermocouple graduation table is made; The graduation table is obtained under the condition of a free end temperature of 0 ℃, and different thermocouples have different graduation tables. When a third metal material is connected to the thermocouple circuit, as long as the temperature of the two contacts of the material is the same, the thermoelectric potential generated by the thermocouple will remain unchanged, that is, unaffected by the connection of the third metal to the circuit. Therefore, when measuring temperature with a thermocouple, a measuring instrument can be connected, and after measuring the thermoelectric electromotive force, the temperature of the measured medium can be known. When measuring temperature, a thermocouple requires the temperature of its cold end (the measuring end is the hot end, and the end connected to the measuring circuit through a lead is called the cold end) to remain constant, so that its thermoelectric potential is proportional to the measured temperature. If the temperature of the cold end changes during measurement, it will seriously affect the accuracy of the measurement. Taking certain measures at the cold end to compensate for the impact caused by temperature changes at the cold end is called normal cold end compensation for thermocouples. Special compensating wires are used to connect with measuring instruments.