DJ22-41 Bolt Heating Rod and DC Cabinet
Darui Electric recommends
I. Purpose and Features
III. Model Specifications and Parameters as per the table below:
Ministry of Machinery and Electronics Industry of the People's Republic of China Approved on 1988-07-20, Implemented on 1989-07-01
Note 1: The electric heater parameters listed in this table are applicable to bolts with center hole diameter d=22.6±0.2mm. For electric heaters that do not conform to the center hole diameter and specifications listed in this table, the user and manufacturer shall negotiate.
To meet the needs of assembling and disassembling bolts in high, medium, and low-pressure cylinders of steam turbines and improve work efficiency, our company has developed and produced two major series with over 10 varieties of bolt heating devices. The WQJ steam turbine bolt low-pressure heating device has been used by many power plants. This device is safe, reliable, easy to operate, has a long service life, good effect, and is highly favored by users.
The ZJK-1 DC adjustable bolt heating control cabinet is used with DC bolt heaters, featuring stable and adjustable output DC 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 switch must be turned off. For ZJK series control cabinets, the voltage adjustment and indication should be at the minimum position; for WQJ 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 ones.
6. Special bolt heaters need to 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. information on the matching heating control cabinet.
III. Model Specifications and Parameters as per the table below:
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
