In modern industrial production, especially in the maintenance and overhaul of steam turbines in power plants, the disassembly and assembly of bolts is a frequent and critical task. As a professional heating equipment, the Bolt Heater DJ22 provides an efficient and safe solution for the disassembly and assembly of steam turbine bolts.

Working principle

The Bolt Heater DJ22 works based on the physical principle of thermal expansion and contraction. When large bolts of steam turbines need to be disassembled or installed, the heater is inserted into the center hole of the bolt, and the bolt material is expanded by heating, thereby increasing the length or diameter of the bolt, so that the nut can be easily screwed. The heater usually uses electrical energy as a heat source, and can accurately control the heating temperature and time to ensure that the bolts will not be damaged by overheating during the heating process.

Application

Bolt Heaters DJ22 are widely used in the maintenance and overhaul of steam turbines in power plants, especially in the following occasions:

- Bolt removal: When the bolts become difficult to screw due to long-term use or high temperature and high-pressure environment, the use of DJ22 bolt heaters can effectively reduce the difficulty of disassembly and reduce labor and time costs.

- Bolt installation: When installing new bolts or replacing old bolts, the heater can help the bolts reach the required preload more easily and ensure the installation quality.

- Installation and removal of large bolts of other pressure vessels: In addition to steam turbines, the heater can also be used for other equipment and systems that require the removal and installation of large bolts, such as pressure vessels, large valves, etc.

Installation steps

1. Preparation: Before using the DJ22 bolt heater, make sure that all equipment and tools are ready, including the heater, power cord, control cabinet (if applicable), screwdriver, etc. At the same time, check the condition of the bolts and nuts to ensure that there is no damage or deformation.

2. Insert the heater: Insert the DJ22 bolt heater into the center hole of the bolt to be heated. When inserting, make sure that the heater fits tightly against the bolt hole wall to improve heating efficiency.

3. Connect the power supply: Connect the power cord of the heater to the control cabinet or power socket. During the connection process, pay attention to check whether the power supply voltage matches the rated voltage of the heater to avoid equipment damage due to unstable voltage.

4. Set heating parameters: Set the temperature and time parameters of the heater according to the material, size and required heating effect of the bolt. Generally, the heating temperature should be controlled within the range allowed by the material to prevent the bolt from overheating and deformation.

5. Start heating: Turn on the power and start the heater. During the heating process, closely observe the working status of the heater to ensure its normal operation. At the same time, a thermometer or other measuring tools can be used to monitor the temperature changes of the bolts so as to adjust the heating parameters in time.

6. Complete disassembly and assembly: When the bolt reaches the required temperature, use a wrench or other tools to disassemble or install the nut. Pay attention to safety during operation to avoid burns caused by high temperature.

Maintenance precautions

1. Regular inspection: During use, regularly check the appearance and performance of the DJ22 bolt heater. Check whether the surface of the heater is damaged, deformed or worn, whether the power cord is damaged or aged, whether the plug and socket are in good contact, etc.

2. Cleaning and maintenance: After use, clean the dust and oil on the surface of the heater in time to keep the equipment clean. For the interior of the heater, it should be cleaned and maintained regularly to ensure the normal operation of the heating element.

3. Storage environment: The Bolt Heater DJ22 should be stored in a dry, ventilated environment without corrosive gases, and avoid long-term exposure to humid or high temperature environments to extend the service life of the equipment.

4. Safe operation: When removing and installing bolts, strictly follow the operating procedures to ensure the safe use of the heater. Avoid violent collision or impact on the heater during the heating process to avoid damage to the equipment.

In short, the Bolt Heater DJ22 has become an ideal tool in the field of turbine bolt disassembly and assembly with its high efficiency, safety and convenience. By using and maintaining the heater reasonably, work efficiency can be greatly improved, labor intensity can be reduced, and the normal operation of the equipment and the smooth progress of maintenance work can be ensured.

By the way, we have been supplying spare parts for power plants around the world for 20 years, and we have rich experience and hope to be of service to you. Looking forward to hearing from you. My contact information is as follows:

Tel: +86 838 2226655

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