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An external cooling device for a steam turbine and a cooling pipe installation method in the cooling device

An external cooling device, steam turbine technology, applied in mechanical equipment, engine components, machines/engines, etc., can solve the problems of complex ventilation cooling system, unqualified hot air cleanliness quality, and unclean moisture removal.

Active Publication Date: 2022-05-13
侯志刚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the complexity of the internal ventilating cooling system used in the shutdown of steam turbines in the prior art, and it requires accurate control of the temperature of hot air or nitrogen, which is prone to unqualified hot air cleanliness and poor water removal in air or nitrogen Cleanliness and other problems cause the internal parts of the steam turbine to be eroded or corroded, and then provide an external cooling device for the steam turbine and a cooling pipe installation method in the cooling device

Method used

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  • An external cooling device for a steam turbine and a cooling pipe installation method in the cooling device
  • An external cooling device for a steam turbine and a cooling pipe installation method in the cooling device
  • An external cooling device for a steam turbine and a cooling pipe installation method in the cooling device

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specific Embodiment approach 1

[0023] Specific implementation mode one: combine Figure 1-Figure 2Describe this embodiment mode, a kind of steam turbine external cooling device described in this embodiment mode, it comprises steam turbine cylinder body insulation layer 2, pipe body bracket 5, a plurality of pipe bodies 3 and a plurality of pipe plugs 4; steam turbine cylinder body insulation layer 2 Wrapped on the outer wall of the steam turbine, the steam turbine cylinder insulation layer 2 includes the steam turbine cylinder upper insulation layer and the steam turbine cylinder lower insulation layer, the pipe support 5 is installed on the steam turbine cylinder 1, and multiple pairs of pipes 3 pass through the pipe support 5 along the The axial direction of the steam turbine cylinder is sequentially installed in the upper insulation layer of the steam turbine cylinder, and multiple pairs of pipe bodies 3 are sequentially installed in the lower insulation layer of the steam turbine cylinder through the pip...

specific Embodiment approach 2

[0024] Specific implementation mode two: combination Figure 1-Figure 2 Describe this embodiment, a kind of steam turbine external cooling device described in this embodiment, the pipe body 3 is a steel pipe, the bottom end of each pipe body 3 orifice of the thermal insulation layer on the steam turbine cylinder is set away from the outer wall of the steam turbine cylinder, and the steam turbine cylinder The top of each pipe body 3 of the upper insulation layer is set close to the outer wall of the steam turbine cylinder, and the top of each pipe body 3 of the lower insulation layer of the steam turbine cylinder is arranged close to the outer wall of the steam turbine cylinder. The bottom end of each pipe body 3 nozzles is arranged away from the outer wall of the cylinder body of the steam turbine, and other methods are the same as the specific embodiment one.

specific Embodiment approach 3

[0025] Specific implementation mode three: combination image 3 Describe this embodiment mode, the steam turbine external cooling device described in this embodiment mode, it includes the steam turbine cylinder block insulation layer 2, the pipe body support 5, a plurality of pipe bodies 3, a plurality of pipe plugs 4 and a plurality of electronically controlled valves 6 The steam turbine cylinder body insulation layer 2 is wrapped on the steam turbine outer wall, the steam turbine cylinder body insulation layer 2 includes the steam turbine cylinder body upper insulation layer and the steam turbine cylinder body lower insulation layer, and the pipe support 5 is installed on the steam turbine cylinder body 1, and many pairs of pipe bodies 3 are sequentially installed in the upper insulation layer of the steam turbine cylinder through the pipe support 5 along the axial direction of the steam turbine cylinder, and multiple pairs of pipes 3 are sequentially installed in the lower in...

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Abstract

An external cooling device for a steam turbine and a method for installing a cooling pipe in the cooling device. The present invention relates to a cooling device for a steam turbine and a method for installing a cooling pipe. Moreover, precise control of the temperature of hot air or nitrogen is required, and problems such as unqualified hot air cleanliness and unclean removal of moisture in the air or nitrogen are prone to problems such as erosion or corrosion of the internal parts of the steam turbine, which includes the thermal insulation layer of the steam turbine cylinder , pipe body support, multiple pipe bodies and multiple pipe plugs; the pipe body support is installed on the cylinder block of the steam turbine, and multiple pairs of pipe bodies are sequentially installed in the upper insulation layer of the steam turbine cylinder body through the pipe body support along the axial direction of the steam turbine cylinder block and in the lower thermal insulation layer of the cylinder block of the steam turbine, a pipe plug is respectively installed at each end of each pipe body, and the length direction of each pipe body is arranged along the circumferential direction of the cylinder block of the steam turbine. The invention is used for steam turbine cooling.

Description

technical field [0001] The invention relates to a steam turbine cooling device and a cooling pipe installation method, in particular to a steam turbine external cooling device and a cooling pipe installation method in the cooling device. Background technique [0002] In the prior art, the steam turbine equipment uses high-temperature steam to rotate, and the inside of the steam turbine is still in a high-temperature state after the shutdown. It takes about 15 days to cool down to the shutdown temperature in the conventional way. This is a long process, which delays the restart time of the unit. [0003] At present, the internal temperature of the steam turbine is lowered by pouring hot air or hot nitrogen into the steam turbine, but the system is complex, requiring precise control of the temperature of the hot air or nitrogen, high requirements on the cleanliness of the hot air, and the moisture content in the air or nitrogen. strict control is required. In actual operation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D25/12F01D25/14
CPCF01D25/12F01D25/145
Inventor 侯志刚张婉婧
Owner 侯志刚