I. Purpose and Features
To meet the needs of installing and removing bolts in high, medium, and low-pressure cylinders of steam turbines and improve work efficiency, our company has developed two major series with over 10 varieties of bolt heating devices. The DJ22-23 low-pressure bolt heating device for steam turbines has been used by many power plants. This device is safe, reliable, easy to operate, has a long service life, and is well-received by users.
The DJ22-23 DC adjustable bolt heating control cabinet, used in conjunction with DC bolt heaters, features stable and adjustable DC output voltage (0~220V adjustable), multiple output channels (up to 12 loads), high output power, safety, and reliability.
II. Usage Precautions
1. The control cabinet shell must be reliably grounded.
2. The phase and neutral wires between the bolt heater plug and the cabinet socket must be correctly connected; misconnection is strictly prohibited.
3. When installing or removing the bolt heater, the power must be disconnected. For DJ22-23 series control cabinets, the voltage adjustment and indication should be at the minimum position; for DJ22-23 low-voltage control cabinets, voltage shifting with load is strictly prohibited.
4. When connecting loads, pay attention to the balance between the three phases.
5. If connectors are damaged, they must be replaced with identical parts.
6. Special bolt heaters must be manufactured according to the specific geometric dimensions of the bolts. When ordering, please provide: a. bolt outer diameter; b. bolt outer diameter; c. total bolt length; d. nut length; e. the matching heating control cabinet situation.
III. Model Specifications and Parameters as per the table below:
