Resistance type electric heating hot water boiler

A hot water boiler and electric heating technology, applied in the field of boilers, can solve problems such as low thermal efficiency of boilers, and achieve the effects of high thermal efficiency, improving thermal efficiency and saving manpower

Inactive Publication Date: 2012-11-21
大连船舶重工集团装备制造有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Beneficial effects of the present invention: 1. Solve the problem of low thermal eff...

Method used

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  • Resistance type electric heating hot water boiler

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Embodiment Construction

[0020] The boiler shell is welded by the drum 10, the front head 4, and the rear head 11. The gas collecting tank 8 and the water outlet valve seat 7 are connected by flanges. The electric heating tube protection cover 1 and the boiler support 2 are welded on the drum 10. Externally, the electric heater 3 is connected to the electric heating pipe interface with bolts, the safety valve is fixed on the safety valve pipe seat with bolts, the pressure gauge interface 5, the electric heating pipe interface, the safety valve seat 6, the outlet valve seat 7, The manhole 9, the thermometer interface 13, the return valve seat 14, and the blowdown valve seat 15 are all welded to the drum 10 and communicated, and there is a boiler insulation 12 outside the boiler drum.

[0021]

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Abstract

The invention relates to a resistance type electric heating hot water boiler, belonging to the technical field of a boiler. A boiler cylinder body is formed by welding a boiler cylinder, a front seal head, and a rear seal head; a gas collecting pot is connected with a water outlet valve by a flange; an electric heating pipe protecting cover and a boiler supporting base are welded at the outer part of the boiler cylinder; an electric heater is connected to an electric heating pipe interface by bolts, a safety valve is fixed on a safety valve pipe base by bolts; a pressure gage interface, an electric heating pipe interface, the safety valve base, a water outlet valve base, a manhole, a temperature meter interface, a water returning valve, and a blowoff valve base are welded to the boiler cylinder and are communicated with one another; the outer part of the boiler cylinder is provided with a boiler to preserve temperature. The resistance type electric heating hot water boiler has the following beneficial effects that: 1. the problems of low heat efficiency of the boiler is solved to save energy; 2, the environment-friendly problem is solved; 3. the labor is saved and the labor intensity of an operator is lightened; 3. the history of 4.2 MW/h of the evaporation capacity of a resistance type electric heating steam boiler is broken through.

Description

technical field [0001] The invention relates to a resistance electric heating hot water boiler, which belongs to the technical field of boilers. Background technique [0002] Nearly 85% of the industrial boilers in use in my country are coal-fired boilers. The coal-fired industrial boilers in my country mainly use layer combustion and chain grate boilers. The design efficiency of boilers is generally between 72% and 80%. In actual operation, the operating load is generally lower than the rated load of the boiler, the carbon content of the slag is high, the excess air coefficient is large, and the exhaust gas temperature is high. Therefore, the thermal efficiency is generally lower than the design efficiency. The thermal efficiency of layer-fired coal-fired boilers in advanced foreign countries can reach 80% to 85%. Some boilers have been in operation for 20 to 30 years and can still maintain high thermal efficiency. Due to the characteristics of my country's fuel structure, ...

Claims

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Application Information

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IPC IPC(8): F24H1/22F24H9/20
Inventor 李刚
Owner 大连船舶重工集团装备制造有限公司
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