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A kind of antifreeze method for exhaust pipeline of molten salt solar heat absorber

A technology for solar heat absorbers and exhaust pipelines, applied in the field of heat absorber pipelines, can solve the problems of high power consumption of heat tracing, etc., and achieve the effect of reducing parasitic power consumption and avoiding blockage

Active Publication Date: 2016-03-30
DONGFANG BOILER GROUP OF DONGFANG ELECTRIC CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] 3. During the operation of the heat absorber, it is necessary to maintain the temperature of the molten salt, which makes the heating power consumption larger

Method used

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  • A kind of antifreeze method for exhaust pipeline of molten salt solar heat absorber

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Embodiment 1

[0027] Such as figure 1 As shown, a method for antifreezing of the exhaust pipeline of a molten salt solar heat absorber. The heat absorber 15 is formed by connecting 1 to n levels of heating surfaces in series, wherein the value of n depends on the heat capacity of the heat absorber. Decide. The top connecting pipe 3 at the top of the heat absorber and the bottom connecting pipe 8 at the bottom of the heat absorber connect the adjacent two-stage heating surfaces with each other, so that the heating surfaces of the heat absorber 15 at all levels are connected in series to form a "bow"-shaped circuit; specifically In other words, the "bow" shaped circuit means: the top of the heat receiving surface 1 of the heat absorber is the top header 21 of the heat receiving surface, the bottom of the heat receiving surface of the heat absorber is the bottom header 22 of the heat receiving surface, and the inlet of the heat absorber 12 is located at the bottom of the bottom header 2 of th...

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Abstract

The invention discloses an antifreeze method for exhausting the exhaust pipeline of a molten salt solar heat absorber. The connecting pipe on the top of the heat absorber is connected with an exhaust branch pipe with a throttling orifice, and several exhaust branch pipes are combined to form an exhaust gas. Main pipe; part of the molten salt enters the heat absorber from the top connecting pipe, and the other part enters the exhaust branch pipe through the throttling orifice, and is collected in the exhaust main pipe and then discharged to maintain the temperature of the exhaust main pipe higher than the freezing point of the molten salt; heat absorption The connecting pipe at the bottom of the device is connected with a discharge branch pipe with an electric gate valve. There is a throttle hole on the valve plate of the electric gate valve. Part of it enters the discharge branch pipe through the orifice on the electric valve plate, collects in the discharge main pipe, and then discharges. The invention realizes the warming pipe of the main pipe for exhausting and cleaning, ensures reliable and uniform heating of the pipeline, maintains the temperature of the pipeline higher than the freezing point of molten salt, avoids the blockage of the pipeline, and reduces the parasitic power consumption of the heat absorber body.

Description

technical field [0001] The invention relates to an antifreeze method for a clean exhaust pipeline of a molten salt solar heat absorber, and belongs to the technical field of heat absorber pipelines. Background technique [0002] There is a dead zone in the exhaust pipeline of the existing solar molten salt heat absorber during operation. In order to ensure that the molten salt in the dead zone does not solidify, the commonly used device is to realize it by laying electric heat tracing on the corresponding pipeline. There are following weak points in this device: [0003] 1. The electric heating cable and the heating pipeline cannot be completely bonded, resulting in the uneven heating of the heating pipeline; [0004] 2. It is necessary to arrange more temperature measuring points on the heating pipeline to comprehensively judge the temperature of the heating pipeline, which is used to control the start and stop of the electric heating belt; [0005] 3. During the operatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24J2/46
CPCY02E10/40
Inventor 李有霞臧平伟奚正稳丁路冉燊铭聂立
Owner DONGFANG BOILER GROUP OF DONGFANG ELECTRIC CORP
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