Thermocouple for aluminum solution

Aluminum solution dedicated thermocouple adopts the special material of heat resistant material and abrasion resistant alloy material as the temperature outside casing and wear-resisting head, according to the measured temperature is different, the choice of wear-resisting protection tube material is different, use flange connection or threaded connection mode, can use for a long time in the range of 0-1400 degrees temperature measurement, is metallurgy, chemical industry, cement plant, power plants, fluidized bed boiler using in high temperature and abrasion environment ideal measuring temperature sensor, wear-resisting protection tube is equipped with armored core body, has high wear resistance, corrosion resistance, oxidation resistance, resistance to erosion performance, The protective tube can also play a good role in protecting the inner armored core under high temperature, and its service life can be up to two years. The components of the special thermocouple for aluminum solution include wear-resisting head, connecting rod, threaded connection or flange, junction box and armored inner core. The wear-resisting head should be selected according to the actual temperature at the production site, while the connecting rod, threaded connection or flange should be selected according to whether there is corrosive medium at the site.

Technical parameters:

1. Connection mode: threaded connection or flange connection can also be produced according to actual needs

2. Electrical export: M20×1.5 or NPT1/2

3. Hardness of wear resistant head: HRC60-65

4. Protection level: IP65

5, insulation resistance > 100 m Ω (room temperature)

6. Test voltage: 500VDC

7. Connection size: M27×2 or NPT3/4, which can be matched according to actual needs

8. Accuracy level: Level I

Thermocouple protection tube for aluminum solution material:

1. Wear resistance of superalloy: the special heat-resistant and wear-resistant alloy material is used as the temperature measuring outer protective tube, and the inner armored core body, which not only has higher corrosion resistance to the erosion of particles, but also plays a good role in the protection of the inner core body under high temperature conditions. Adopt flange or thread connection form, can carry on temperature measurement from 0 to 1200℃ for a long time.

2. Composite casting wear resistant alloy: The composite armor technology is adopted to add wear resistant particles to the superalloy matrix for precision casting molding. No turning, high hardness, high temperature oxidation resistance, a few casting defects but not affect the high temperature wear and sealing, is the use of the most common high temperature wear resistant sleeve, the price is moderate, the service temperature of 800 ~ 1200℃.

3. Ceramic metal wear resistance: recrystallized silicon carbide protective tube, high temperature up to 1300℃, with K or S degree armored core inside, is specially suitable for temperature measurement under high temperature and strong wear resistance conditions such as cement kiln end and circulating curing bed.

4. Ion injection and percolation of tungsten carbide: tungsten carbide particles are injected on the casing surface by ion injection and percolation technology based on stainless steel. With high hard, high strength, high toughness, especially wear-resistant, wear layer thickness of 0.5 ~ 1.5mm, hard outside and tough inside, minimum diameter to 8, good surface quality, use temperature of 0 ~ 800℃. The service life of coal mill in power plant is more than 2 years.

5, iron - aluminum porcelain protection tube: iron - aluminum and skillfully added A12O3 powder, that is, the production of iron - aluminum porcelain (TLC) especially gold, the aluminum - aluminum porcelain alloy made into aluminum solution dedicated thermocouple (resistance) protection tube, that is, the most critical part of iron - aluminum - aluminum porcelain solution dedicated thermocouple (resistance) protection tube. According to the working temperature, wear condition, medium type, pressure equation condition, made different series of iron aluminum porcelain protective tube, the existing series: TLC, TLC1, TLC2, TLC3, TLC4 five series.

TLC: Hydrochloric acid, nitric acid, sulfuric acid, sodium hydroxide, potassium hydroxide solution. The operating temperature is divided into 350 degrees and 750 degrees.

Type TLC1: oxidation resistance, vulcanization resistance, zinc vapor corrosion resistance, high wear resistance, good heat and shock resistance, operating temperature 1100 degrees.

TLC2 type: working temperature 1250°C, wear resistance is lower than TLC1 type, compared with ceramic tube thermal shock resistance, high temperature thermal strength, working pressure (16MPa and other technical indicators are far ahead, especially suitable for 1250°C degree S dedicated thermocouple protection tube for aluminum solution.

TLC3: improved by TLC2 type, in addition to have the characteristics of TLC2 type, wear resistance has a special increase, far higher than TLC1 type, in the same working condition, can improve the life of two times. Operating temperature is 1300°C.

TLC4: from TLC1 must be further into, in addition to the characteristics of TLC1, there is a special increase in wear resistance, far higher than TLC1, under the same working conditions, can increase the life of three times, working temperature 1100°C. The service life of the protective tube for temperature measurement at the inlet and outlet of the ball mill can be up to 36 months.