Shandong Huaning Electric Heating Technology Co., Ltd.
An example of the use of electric heating of an integrated pipe overpass in an open installation of a CHP
A comprehensive pipe trestle at the Houlunbuir power station site is located outdoors, and the original design uses a steam heating method to prevent cold and freezing. After the heating steam is dizzy in winter, the pipe overpass system in the whole plant has problems such as work, cotton, dripping, leakage, water drainage cannot be recycled, pollution in the plant area, auxiliary steam consumption, easy freezing of pipes, and the impact on the safety and stability of the state system. After converting the steam heating method into electric heating, the integrated heating system of the heating pipe frame of the thermal power plant works in good condition, and the reliability and efficiency of the system have been improved.
Oct 20,2022
A comprehensive pipe trestle at the Khulunbuir power station site is located outdoors, and the original design uses a steam heating method to prevent cold and freezing. After the heating steam was put into operation in winter, problems occurred in the pipe overpass system of the whole plant, such as operation, leakage, dripping, leakage, water drainage that could not be restored, environmental pollution on the plant site, auxiliary steam consumption, Easy freezing of pipes and impact on the safety and stability of the public system, etc. D. After converting the steam heating method into electric heating, the integrated heating system of the heating pipe frame of the thermal power plant works in good condition, and the reliability and efficiency of the system have been improved.
After the 22 steam heating pipes of the integrated tube trestle were removed at the plant, the heating cables were laid separately, and the electric heating method was adopted. After the completion of the conversion, the integrated heating system for pipe overpasses was officially put into operation along with the heating system. Since 2013, the heating system for pipe overpasses has been operating normally. The use of electric heating ensures that the pipes and environments do not freeze. So far, there have been no unsafe accidents, such as water shut down, oil shut down, liquid ammonia shut down, caused by the failure of the heating system of the pipe overpass in the equipment in the peripheral area, which greatly improved the safety and reliability of the equipment. At the same time, due to the rejection of heating steam, the supply of auxiliary steam can be reduced by 8 t/h, which saves about 2500 tons of conventional coal for the power plant annually.
Anti-corrosion and explosion-proof certification of self-control temperature explosion-proof electric heating belt
Parameters of anti-corrosion and explosion-proof self-regulating heating cable
(1) Standard color: black/blue
(2) Temperature range: the maximum operating temperature is 65 ± 5 °C and the maximum temperature to be maintained is 90 °C.
(3) Design temperature: Polyolefin minimum-20 °C, Fluorine material minimum-60 °C
(4) Starting current: ≤ 0.5 A/m
(5) Thermal stability: after, as the electric heating belt has passed the thermal performance test, its power should be maintained at 90% of the original value.
(6) Bending radius: 25.4mm at-20 °C, 35mm at-60 °C
(7) Insulation resistance: The insulation resistance between the electric heating conductor and the metal shielding layer shall not be less than 50 MOM.
Related Posts
Electrical heating installation precautions
Electric heating cable is a heating method that uses insulation resistance or resistance heating wire to create a temperature after power supply. It can automatically adjust the output temperature and reasonably maintain the process temperature requirements to keep warm, raise the temperature and protect the heating equipment from freezing. The insulation and antifreeze effect of the container is very good.
Which electric heating should be chosen for the main pipeline transport of heavy oil
Transport of heavy oil through the pipeline over long distances and long-term retention in the pipeline will result in a drop in temperature due to heat dissipation and increased viscosity, which will cause the pipeline to be blocked by freezing or condensation-related accidents. Electric heating is widely used as effective insulation of pipelines and anti-freeze protection.
Which electric heating cable should be considered for a 4 km pipeline
According to the statistics of the Hydrometeorological Center, the average daily minimum temperature at the location of the CNPC tank farm is 5 ° C, and the average daily maximum temperature is 14 ° C. Since the freezing point of the PX is about 15 °C, the supply pipeline needs heat preservation and heating. The oil depot has been in operation for many years without a stable source of steam, therefore, this project is considering the use of electric heating technology.
Application of outdoor electric heating cable in oil main pipelines with high paraffin content
Long-distance crude oil pipelines with a high paraffin content with freezing temperatures above 50 °C. According to the requirements of the production plan of the plant, the volume of oil transportation through the pipeline is 150 thousand rubles. Tons per year, maximum-200 thousand. Tons per year.. According to the thermodynamic analysis of the pipeline, the initial supply temperature of the pipeline is 80 ° C (TN), and the temperature of the end entering the tank is 60 ° C (Tu). Since the transportation temperature needs to be adjusted according to the time of year, it sometimes needs to be transported by heat.
What heating product to choose for main infusion pipelines
In petrochemical engineering, trunk infusion pipelines are the lifeblood of the factories. The temperature in the northern region is too low in winter and the pipeline needs to be insulated to compensate for the heat loss due to the low temperature in winter to ensure the normal operation of the pipeline.
The role of leather tracer cables in the insulation of asphalt main pipelines
The toughness of the asphalt is greatly affected by the temperature. When the temperature decreases, the toughness of the asphalt increases, and the drop in resistance of the asphalt during pipeline transportation increases; when the temperature falls below the freezing point, the asphalt solidifies, causing the pipeline to clog and the conveyor belt to come to trouble. Therefore, electric heating and heat preservation during the transportation of asphalt are very important.
Need help to find the right solution with our experts?
WhatApp:
E-mail:
Address:
Xinxing Street, Industrial Park, Shanghe County, Jinan City, Shandong Province
✪ Huaning Electric Heat Tracing provides you with professional solutions
