How to deal with a ruptured thermocouple sheath?
The rupture of the sheath will inevitably occur when the thermocouple is used, which will directly affect the reliable and safe operation. Combining several situations that may easily lead to the rupture of the thermocouple, the following methods can be used to reduce the occurrence of the rupture of the thermocouple.
1.Strictly control the insertion depth of the thermocouple.
When we measure the temperature, we only need to insert the thermocouple into the isothermal area of the fluid without inserting it into the center point of the pipe, which is beneficial to shorten the length of the cantilever of the thermometer bag and reduce the amplitude of the end point.
2. Under the condition of ensuring the necessary strength of the thermocouple, the diameter of the thermocouple is optimally selected. It is necessary to reasonably ensure the strength of the sheath, and to stagger the resonance danger zone as much as possible.
3. Change the cross-sectional shape, and process the surface into a structural type, so that the fluid does not have vortex shedding.
4. Strictly control the maintenance quality, do a good job in the material inspection of the thermocouple, and at the same time do a good job of flaw detection to prevent the occurrence of abnormal accidents such as weld cracks and fractures.
5. When the system is put into operation, avoid the sudden full opening of the valve on the pipeline. When the system is just put into operation, slowly open the valve, let the system pressure gradually rise, reduce the pressure difference between the front and back of the thermocouple as much as possible, and avoid the sheath rupture caused by excessive one-way force. occur.
The above is the product knowledge provided by Jaye Heater for everyone. I hope it can help everyone learn better. We need to combine theory with practice and propose corresponding solutions according to the specific situation that occurs.
