How to ensure the quality of the heat transfer oil boiler? This article explains the following five aspects.
1. The manufacturer must have a manufacturing license
The manufacturer of the heat-conducting oil furnace must have a manufacturing license, and the manufacturer using the heat-conducting oil furnace must also purchase a heat-conducting oil furnace product produced by a manufacturer with a production-qualified heat-conducting oil furnace.
2. Strength calculation and structural design of the heat transfer oil furnace
Heat transfer oil boiler quality
All gas phase furnaces are under pressure, while the liquid phase furnaces of the heat transfer oil electric heating furnace are divided into two types: pressure-injected and non-pressure-suction. The components of the organic heat carrier furnace shall be calculated according to the current boiler strength calculation standard regardless of the pressure or not. The design pressure is 0.3 MPa and not less than 0.59 MPa. In addition to the design pressure, the calculation formula, the selection of the parameters, and the determination of the coefficients are all carried out according to the corresponding calculations of the “Strength Calculation of Pressure Components of Water Tube Boilers” and “Strength Calculation of Pressure Components of Shell and Shell Boilers”. The structural design of the electric heating and heat transfer oil furnace and the mechanical performance test of the product weld must meet the requirements of the “Safety Technical Supervision Regulations for Organic Heat Carrier Furnace”.
3. Pressure test
The heat transfer oil furnace is subjected to a pressure test after assembly of the manufacturing unit and after installation and repair of the unit of use.
The pressure test of the electric heating heat transfer oil furnace is divided into a hydraulic test, a hydraulic test and a gas tightness test. Whether it is a gas furnace or a liquid furnace for electrically heating the heat transfer oil furnace, the hydraulic pressure test is carried out in the manufacturing unit, and the hydraulic test may only be carried out in the use unit, and the water pressure test is not suitable. For the gas furnace of the electric heating heat transfer oil furnace, the airtightness test is also carried out in the manufacturing unit and the use unit to check the sealing condition of the non-welded joint portion. The airtight test method and requirements of the electric heating heat transfer oil furnace are carried out in accordance with the relevant provisions of the pressure vessel. For the liquid furnace of the electrically heated heat transfer oil furnace, the air tightness test is not required.
Heat transfer oil boiler quality
The test pressure of the airtightness test of the electric heating heat transfer oil furnace takes the working pressure of the gas furnace; the hydraulic pressure test pressure is 1.5 times the working pressure of the organic heat carrier furnace.
4. Strictly control the welding quality of electric heating and heat transfer oil furnace
Since the organic heat carrier of the electric heating heat transfer oil furnace is easy to leak and burn easily, the welding requirements of the organic heat carrier furnace for the electric heating heat conduction oil furnace are higher than those for the water medium medium boiler, and the welding quality of the electric heating heat conduction oil furnace should be strictly controlled. The welding requirements and non-destructive testing of the electric heating heat transfer oil furnace must meet the requirements of the “Safety Technical Supervision Regulations for Organic Heat Carrier Furnace”.
5. The safety device for electric heating and heat transfer oil furnace should be complete, sensitive and reliable.
The selection, installation, inspection and maintenance of safety valves, liquid level gauges, pressure gauges, thermometers, sewage devices, expanders and automatic protection devices for electric heating and heat transfer oil furnaces must meet the requirements of the “Safety Technical Supervision Regulations for Organic Heat Carrier Furnaces”. Provisions.