Steam boiler

Abstract

The invention discloses a steam boiler which comprises a boiler and a liquid level meter which is used for measuring and controlling the liquid level inside the boiler, wherein the boiler comprises a boiler body which is provided with a water inlet and a steam out, and a heating assembly which is arranged inside the boiler body. The water inlet is connected with a water source through a control valve, a lower communicating pipe and an upper communicating pipe are arranged between the liquid level meter and the boiler body in a communicated mode, and a plurality of pieces of heat dissipation plates which are used conducting heat dissipation on the liquid level meter are arranged on the outer wall of a cylinder body of the liquid level meter, so that dissipated heat of the floating ball liquid level meter is more than the heat transmitted from the steam boiler to the cylinder body of the liquid level meter through the upper communicating pipe and the lower communicating pipe. The number and specification of the heat dissipation plate can be adjusted according to temperature degree which needs to be lowered, effects are significant, and normal operation of the floating ball liquid level meter is effectively guaranteed. Moreover, a waste heat utilizing device which is capable of utilizing waste heat in the boiler body to heat the steam for a second time is arranged on the upper portion of the boiler, an S-shaped steam conveying passage is formed inside the boiler body to increase path length of heat exchange, and that the steam discharged through the steam outlet is not mixed with water is guaranteed.

Description

technical field [0001] The invention relates to a steam boiler. Background technique [0002] Steam boilers are widely used in various fields, and the liquid level in the steam boiler is an extremely important parameter to ensure its normal operation. In the prior art, a float level gauge is generally used to measure the liquid level in the furnace. And control, that is, through the lifting of the float magnet, the dry reed switch in the float slide tube is turned on or off, so as to control the water inlet of the water source control valve or stop the water inlet to control the liquid level in the boiler. However, since the working temperature of the float magnet is generally less than 120°C, when the steam pressure reaches a certain value, the temperature of the float chamber will often exceed the maximum operating temperature of the float level gauge, which will cause the liquid level The unreliable operation of the meter leads to failure, which is very dangerous for the...

AI Technical Summary

Problems solved by technology

However, since the working temperature of the float magnet is generally less than 120°C, when the steam pressure reaches a certain value, the temperature of the float chamber will often exceed the maximum operating temperature of the float level gauge, which will cause the liquid level The unreliable work of the meter leads to failure, which is very dangerous for the boiler

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