Direct Sales of Bolt Heating Rods for Steam Turbines - Yangzhou Darui
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To meet the needs of loading and unloading 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 more than 10 varieties of bolt heating devices. The DJ22-54 low-voltage heating device for steam turbine bolts 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 DJ22-54 DC adjustable bolt heating control cabinet, used in conjunction with DC bolt heaters, features stable and adjustable output DC voltage (0~220V adjustable), multiple output channels (up to 12 loads), high output power, safety, and reliability.
2. Usage Precautions
1. The control cabinet shell should be reliably grounded.
2. The phase and neutral wires between the bolt heater plug and the cabinet socket must be connected correctly; incorrect connections are strictly prohibited.
3. When installing or removing the bolt heater, the power switch must be turned off. The voltage adjustment and indication of the DJ22-54 series control cabinet should be at the minimum position; the DJ22-54 low-voltage control cabinet is strictly prohibited from shifting voltage under load.
4. When connecting loads, pay attention to the balance among the three phases.
5. If connectors are damaged, they must be replaced with original specifications.
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. the matching heating control cabinet situation.
3. Model, specifications, and parameters are as specified in the table below:
Approved by the Ministry of Machinery and Electronics Industry of the People's Republic of China on 1988-07-20, implemented on 1989-07-01
Note 1: The parameters of the electric heaters listed in this table apply to bolts with a center hole diameter of 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 agree upon them.
2. The surface power density of the electric heaters listed in this table is selected as 8-11W/cm².
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
