Limiting device for high-temperature reheat steam pipeline and arranging method of limiting device

A steam pipeline and high-temperature reheating technology, which is applied in the direction of pipeline supports, pipeline systems, pipes/pipe joints/pipe fittings, etc., can solve the problems that the support and hanger structure cannot be universalized, the overall structure is unreasonable, and the input cost is high. The effect of reducing the difficulty of distribution calculation, wide application range and good stability

Active Publication Date: 2016-10-12
CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the purposes of the present invention is to solve the problems of unreasonable overall structure, generalization of support and hanger structure, low laying efficiency and high investment cost in the existing high-temperature reheat steam pipe upper limit device designed only by experience , providing a limit device for high temperature reheat steam pipeline

Method used

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  • Limiting device for high-temperature reheat steam pipeline and arranging method of limiting device
  • Limiting device for high-temperature reheat steam pipeline and arranging method of limiting device

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specific Embodiment 1

[0028] refer to figure 1 and figure 2 , the limiting device of a high-temperature reheat steam pipeline involved in this embodiment includes a high-temperature reheat steam pipeline 1 and equipment connected to both ends of the high-temperature reheat steam pipeline. The limiter 2 is to use the thermal expansion characteristics of the pipeline itself to offset the thermal displacement of the equipment interface. The axial limiter 2 is set near the connection between the high-temperature reheat steam pipeline 1 and the equipment to reduce the high-temperature reheat steam pipeline system. The overall thrust and thrust distance generated by the equipment interface; the number of axial stoppers 2 is 1-5 or the same as the number of interfaces connected to the equipment by the high-temperature reheat steam pipeline 1; the setting position of the axial stopper 2 is determined by The expression H=Z / (T×α)+L is determined. In the expression: H is the position height of the stopper 2...

specific Embodiment 2

[0058] The characteristic of Embodiment 2 of the present invention is that: the axial limiter 2 is an axial reinforcement provided on the high-temperature reheat steam pipeline 1 to limit the axial expansion and contraction of the high-temperature reheat steam pipeline 1 . All the other are with specific embodiment 1.

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Abstract

The invention relates to a limiting device for a high-temperature reheat steam pipeline and an arranging method of the limiting device. The limiting device comprises the high-temperature reheat steam pipeline and equipment connected to two ends of the high-temperature reheat steam pipeline; several axial limiters are arranged on the high-temperature reheat steam pipeline to offset thermal displacement at equipment interfaces by utilizing the thermal expansion property of the high-temperature reheat steam pipeline itself; the axial limiters are arranged near the parts, connected with the equipment, of the high-temperature reheat steam pipeline; the number of the axial limiters is 1 to 5 or the same number as that of the interfaces of the equipment connected with the high-temperature reheat steam pipeline; and the positions of the axial limiters are determined by the expression H=Z/(T*alpha)+L. The limiting device has the beneficial effects that universalization is realized; the problems of low laying efficiency and high investment are solved; the distribution computing difficulty of the limiting device is reduced; the mounting stability of the high-temperature reheat steam pipeline as well as the safety of equipment running can be improved; the design of supports and hangers of the high-temperature reheat steam pipeline is standardized and unified; and the application range is wide.

Description

technical field [0001] The invention relates to a position-limiting device for a high-temperature reheat steam pipeline and an arrangement method thereof, which are suitable for laying high-temperature reheat steam pipelines of thermal power generating units. It belongs to the technical field of thermal power plant equipment. Background technique [0002] The high-temperature reheat steam pipeline is also called the reheat hot section pipeline, and the distribution reheat hot section pipeline of the power plant is collectively called the piping system, which is the steam pipeline from the outlet of the boiler reheater in the thermal power plant to the front of the Zoomlion Gate. Due to the high design temperature of the high-temperature reheat steam pipeline, the relatively large diameter of the pipeline, and the large deformation of the pipeline under working conditions, and the large Z-direction thermal displacement of the central joint door of the steam turbine, it will m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D1/06F16L3/00
CPCF16L3/00F17D1/06
Inventor 席琛李航
Owner CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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