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A laminated sealing device for high pressure steam inlet tube of steam turbine

A technology of tube lamination and sealing device, which is applied in the direction of mechanical equipment, engine components, machines/engines, etc. It can solve the problems of affecting the sealing effect of the sealing ring and the extrusion deformation of the sealing ring, so as to prevent falling off and extrusion deformation , the effect of increasing the contact area

Active Publication Date: 2021-03-19
JIANGSU MARITIME INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the shortcomings in the prior art, such as: the device is only fixed and pressed by bolts so that the pressure ring directly presses against the sealing ring. If the bolts are tightened too tightly, the instantaneous extrusion force will Make the compression ring squeeze and deform the sealing ring, thus affecting the sealing effect of the sealing ring

Method used

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  • A laminated sealing device for high pressure steam inlet tube of steam turbine
  • A laminated sealing device for high pressure steam inlet tube of steam turbine

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Embodiment Construction

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0018] In describing the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", " The orientation or positional relationship indicated by "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, so as to Specific orientation configurations and operations, therefore, are not to be construed as limitations on the invention.

[0019] Such as Figure 1...

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Abstract

The invention discloses a steam turbine high-pressure steam inlet inserting pipe stacked piece type sealing device comprising a steam inlet inserting pipe and a high-pressure inner cylinder. The outerside of the steam inlet inserting pipe is sleeved with a plurality of outer sealing rings and a plurality of inner sealing rings. The multiple outer sealing rings and the multiple inner sealing ringsare arranged at intervals. The steam inlet inserting pipe is further sleeved with a sleeve plate and a pressing ring. The sleeve plate is located between the pressing ring and the high-pressure innercylinder. An annular rubber pad is fixedly connected to the bottom side of the sleeve plate. The sleeve plate is symmetrically provided with telescopic grooves. Elastic mechanisms are arranged in thetelescopic grooves. An extrusion block is connected to the sleeve plate through the elastic mechanisms. When the pressing ring presses the extrusion block down, the extrusion block moves down, a second spring is driven to compress, meanwhile a movable wedge block slides through a bevel on the extrusion block and a slope end face on a movable wedge block, then a first spring starts to compress, buffering is conducted through elastic force generated by compression of the first spring and the second spring, and the pressing ring is prevented from directly pressing the sealing rings.

Description

technical field [0001] The invention relates to the technical field of a high-pressure steam inlet insertion pipe of a steam turbine, in particular to a laminated sealing device for a high-pressure steam inlet insertion pipe of a steam turbine. Background technique [0002] The steam turbine, also known as the steam turbine engine, is a rotary steam power device. The high-temperature and high-pressure steam passes through the fixed nozzle to become an accelerated air flow and then sprays onto the blades, so that the rotor equipped with blade rows rotates and works externally at the same time. Steam turbines are the main equipment of modern thermal power plants, and are also used in metallurgical industry, chemical industry, and ship power plant. [0003] According to the Chinese Patent No.: CN202280479U, a steam turbine high-pressure steam inlet tube laminated sealing device includes a pressure ring, a plurality of outer sealing rings and a plurality of inner sealing rings, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D11/00
CPCF01D11/003
Inventor 彭陈王红涛
Owner JIANGSU MARITIME INST
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