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Seal of principal axis of water turbine in type of stay column

It is a technology for sealing of tubular turbines and main shafts. It is used in the sealing of engines, hydroelectric power generation, and mechanical equipment. It can solve the problems of complicated installation, troublesome replacement of packing, and inability to compress packing. Simple, Inexpensive Effects

Inactive Publication Date: 2009-01-14
TIANJIN TIRNFR HEAVY HYDROELECTRIC FRCILITY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the calculation of the spring force is inaccurate, the packing will not be pressed tightly, which will affect the sealing effect
This kind of sealed packing material is more expensive
In addition, the installation is more complicated, and it is more troublesome to replace the packing

Method used

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  • Seal of principal axis of water turbine in type of stay column
  • Seal of principal axis of water turbine in type of stay column
  • Seal of principal axis of water turbine in type of stay column

Examples

Experimental program
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Effect test

Embodiment Construction

[0012] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0013] See figure 1 with image 3 , the rotating bracket 10 of the present invention is fixed on the main shaft flange, the fixed bracket 4 is installed on the guide cone 1, the rotating bracket 10 is matched with the fixed bracket 4, and there is an air shroud between the fixed bracket 4 and the guide cone 1 Type maintenance seal 7, the working seal is two flat seals, the first flat seal is on the downstream side, the sealing plate I6 is fixed on the fixed bracket 4 with the gland II5, and the first seal is formed between it and the rotating bracket 10 ; The second flat plate is sealed against the upstream side, fixedly installed on the rotating bracket 10 with the gland III9, and the gland I3 is fixedly installed on the fixed bracket 4, a...

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PUM

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Abstract

This invention relates to sealing of a primary shaft of a tubular turbine characterizing that working sealing includes two sets of panel sealing, clean pressure water is penetrated between the two sets of panel sealing, in which the first one is close to the lower reaches including a rotating bracket fixed on the flange of the main shaft and a fixed bracket fixed on the inducing prick, which are matched in clearance, sealing plate 1 is jacketed on the rotating bracket and placed between the rotating bracket and the fixed bracket, cover 2 is jacketed on the rotating bracket adjacent to the sealing board, both the two are fixed at the fixed bracket, the second set of sealing is close to the upper stream, cover 3 fixes sealing plate 2 on the rotating bracket, which leans against sealing plate 1 in clearance.

Description

technical field [0001] The invention relates to a seal for a tubular water turbine, in particular to a seal for the main shaft of a tubular water turbine. Background technique [0002] At present, the more commonly used structure of the main shaft seal of the tubular turbine is the packing seal. For the traditional structure of packing seal, please refer to figure 2 , mainly including: diversion cone, pressure pad water tank, adjustment screw and spring, cushion box, packing, bushing, maintenance seal, gland, etc. The bushing should be fixed on the main shaft with stainless steel, and a packing is installed between the bushing and the cushion box. The key to this structural design is the compression spring on the adjustment screw on the pressure pad water tank. When the packing is worn out, Compression spring relies on its tension force to press the pad water tank against the packing. If the calculation of the spring force is not accurate, the packing will not be pressed ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03B11/00F16J15/40
CPCY02E10/226Y02E10/20
Inventor 单庆臣苗长健马恩君张志斌
Owner TIANJIN TIRNFR HEAVY HYDROELECTRIC FRCILITY CO LTD