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Arrangement method of tower-type boiler high-temperature reheater container system

A layout method and tower boiler technology, applied in the field of energy and power, can solve problems such as safety accidents and over-temperature, and achieve the effect of reducing the hidden danger of over-temperature

Active Publication Date: 2012-01-25
SHANGHAI WANGTE ENERGY RESOURCE SICENCE & TECH
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  • Abstract
  • Description
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Problems solved by technology

In general boiler design, the steam flow in the middle and both sides along the furnace width is roughly equal, so that the heat load on the heating surface close to the furnace wall is relatively large and the steam flow of the cooling tube is at the average level, which is easy to cause this problem. The heating surface of the part is overheated, resulting in a safety accident, which is more serious for supercritical units with higher parameters

Method used

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  • Arrangement method of tower-type boiler high-temperature reheater container system
  • Arrangement method of tower-type boiler high-temperature reheater container system

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Embodiment Construction

[0011] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0012] The layout method of the high-temperature reheater header system of a tower boiler according to the present invention is shown in the accompanying drawings, mainly consisting of a high-temperature reheater inlet header 1, a high-temperature reheater tube group 2, and a high-temperature reheater outlet header The steam guide pipe 3 is led out from the wall side, the outlet header 5 of the high temperature reheater is formed, and the outlet header of the high temperature reheater is drawn out from the steam guide pipe 6 near the center of the boiler. A resistance device 4 is installed in the steam guide pipe 6 drawn from the outlet header of the high-temperature reheater near the boiler center line. The resistance device includes pipe fittings with obvious resistance characteristics such as throttle rings, throttle pipe sections, and regul...

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Abstract

The invention relates to an arrangement method of a tower-type boiler high-temperature reheater container system, which can reduce the thermal deflection among the screens of reheater effectively according to the operation characteristic of the tower-type boilers. The arrangement method comprises: arranging a resistance device in a lead-out steam guide pipe, close to the center of the boiler, of the tower-type boiler reheater outlet container, the distribution of inter-screen flow is changed by changing the difference between the lead-out flows on two sides of the reheater system outlet container so as to be matched with the distribution of inter-screen heat release difference on a smoke side to reduce inter-screen thermal deflection.

Description

technical field [0001] The invention relates to a header system arrangement method of a high-temperature reheater of a tower boiler, which is applied to the high-temperature reheater of a tower boiler and relates to the fields of energy, power and the like. Background technique [0002] The tower layout boiler is a furnace type different from the ∏ layout boiler, and is widely used because of its many advantages. A significant advantage in the tower boiler is that when the pulverized coal is tangentially burned, the residual rotation of the flue gas in the high-temperature tube panel area is obviously better than that of the Π-type furnace, which greatly improves the uneven heating of the high-temperature tube panel. For large-capacity tower boilers, the header arrangement of the high-temperature reheater basically adopts the traditional double U-shaped arrangement, that is, a double-inlet and double-outlet form is arranged on each half of the furnace width, so that the enti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F22G7/00
Inventor 陆方王孟浩
Owner SHANGHAI WANGTE ENERGY RESOURCE SICENCE & TECH
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