Precautions for installation of constant power electric heating cable

1. Constant-power electric heating cables are generally used for thermal insulation in special areas where there are explosive gases or other dangerous areas. Therefore, valve openings or flammable and explosive gas accumulation areas should be avoided during installation. 2. The heating wire at the beginning and end of the constant-power electric heating cable shall not collide with the conductive core wire and the metal shielding layer during the installation process. 3. The parallel constant-power electric heating cable must be sheared at the heating joint when shearing. It cannot be sheared at will, and the shearing length must exceed 3 meters. 4. The parallel constant power electric heating cable is composed of a heating section. Arbitrary shearing is not allowed. When shearing, it should be sheared in the heating section. 5. The constant-power electric heating cable is different from the self-limiting temperature electric heating cable and cannot be used overlappingly.

Aug 25,2022

What are the applications of explosion-proof heaters?

The explosion-proof electric heater converts electrical energy into heat energy, thereby heating the object that needs to be heated in the heater. In the process of use, the low-temperature medium will enter the organic carrier under pressure through the pipeline, and enter along the special pipeline inside the electric heater. In the experimental study, the research team used the thermodynamic principle to design a specific method to remove electric heat The high temperature heat energy in the operation of the component. Let the object to be heated heat up, so that the outlet can get the ideal process effect. 1. At present, there are many applications of explosion-proof heaters, mainly including: 1. Chemical dust In the chemical industry, explosion-proof electric heaters are mainly used for heating and heating of chemical materials. They can dry powder or spray dry under a certain pressure. The main measure of explosion-proof electric heaters is to install explosion-proof devices in the junction box of the heater to eliminate Hazards of spark ignition. For different heating occasions, the requirements for the explosion-proof grade of the heater are also different, depending on the specific situation. The explosion-proof heater with automatic explosion-proof device adopts ultra-fine dry powder to extinguish the fire, and the flame can be extinguished by chemical and physical double fire extinguishers. Pure mechanical structure design, without any electrical components, low installation and maintenance costs, long maintenance cycle, no need for manual daily maintenance, saving manpower, material and financial resources. In order to solve the safety problems such as oil, gas and dust that may occur during the heating process of the pipeline heater, a new type of pipeline heater heating scheme is proposed. It has the characteristics of explosion-proof performance and good stability.

Aug 25,2022

How to choose a heating cable, what are the precautions

1. When choosing the type of electric heating cable, if it is required that the self-limiting temperature heating cable can be used, the self-limiting temperature electric heating cable should be considered first. Because the constant power electric heating cable cannot automatically control the temperature, the temperature will be too high, and there will be burn marks on the surface of the pipe; 2. When there is a 20% difference between the surface temperature of the electric heating cable and the temperature of the pipe material, it is recommended not to choose the electric heating cable with a metal shielding mesh. If the heat conduction is required to be faster, the electric heating cable with a sheath can be selected. tropical; 3. When considering what kind of electric heating cable to use, it should be considered whether the pipe material can withstand the temperature of the electric heating cable. This will avoid the possibility of the pipe being scalded; 4. When selecting the type, the pipeline medium and the on-site ambient temperature requirements should be considered first, in order to select the appropriate electric heating cable products; 5. When selecting the type, the accessories of the electric heating cable shall not be less than the number of the electric heating heating items, because the selection and purchase shall be made in strict accordance with the requirements.

Aug 25,2022

The temperature control equipment of the electric heater must ensure a certain working temperature

During the maintenance or shutdown of the electric heater, the main power switch should be disconnected, and then relevant tests and disassembly inspections should be carried out. After the unit is shut down, the use of the temperature control equipment of the electric heater should be detected immediately to ensure that the problem is found early and there is enough time to deal with it. If the insulation resistance is lower than 1MΩ, the cable head should be removed, and the insulation resistance of the cable and the electric heater should be measured separately to distinguish whether the problem is the cable or the electric heater. If the three-phase DC resistance is found to be unbalanced, the cable and electric heater should also be measured separately to determine the specific location and temperature. Each group of three-phase DC resistance and each phase insulation resistance, and make a record. At the same time, do the core pulling inspection of the electric heater, remove the dust in the heater, clean the scale of the electric heater, check the appearance and tightening of the electric heater, tighten the connection wires in the control cabinet, check and verify the thermometer and Whether the temperature controller is operating normally. Before starting the unit, the insulation resistance of the heater should also be measured again. If the insulation resistance of the individual group is found to be low, it cannot be sent to prevent damage to the electric heater or cable.

Aug 25,2022

Congratulations to Jiangyin Guanglilai Electric Co., Ltd. successfully launched!

Congratulations to Jiangyin Guanglilai Electric Co., Ltd. successfully launched!

Aug 25,2022