Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A rpt type water turbine main shaft sealing device

A main shaft sealing and water turbine technology, applied in the directions of hydroelectric power generation, mechanical equipment, engine components, etc., can solve the problems of damaging the sealing of the sealing device, uneven spring pressure, and high requirements, and reduce the impact of sealing, reduce resistance, and seal performance. Good results

Active Publication Date: 2016-04-27
NANJING BIJUR MACHINERY PRODS
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sealing device of the main shaft of the water turbine is an important part of the water turbine. The sealing device of the main shaft of the water turbine in the prior art adopts nylon end face seal. Sand clogging and component corrosion, and the use of packing has high requirements on the main shaft of the turbine, and it is easy to damage the sealing performance of the entire sealing device due to vibration or the beating of the main shaft of the turbine itself, causing accidents and other problems

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A rpt type water turbine main shaft sealing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] like figure 1 As shown, a RPT type hydraulic turbine main shaft sealing device provided in this embodiment includes a regulating cylinder 1, an end cover 2, an inner ring 3, an O-ring 4, a sealing ring 5 and a rotating ring 6, and the upper end of the end cover 2 is provided with A regulating cylinder 1, and the telescopic end of the regulating cylinder 1 is located at the lower end of the end cover 2, the end cap 2 is set on the upper end of the inner ring 3, and the lower end of the inner ring 3 is connected with the telescopic end of the regulating cylinder 1; the outer circle of the upper end of the inner ring 3 There is also an O-ring seal 4 between the inner hole of the end cover 2;

[0019] The upper end surface of the inner ring 3 is provided with two water inlet holes 301, the lower end surface of the inner ring 3 is provided with an annular groove 302, the water inlet hole 301 communicates with the annular groove 302, and the annular groove 302 on the inner ri...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an RPT type water turbine main shaft sealing device, which comprises an adjusting cylinder, an end cover, an inner ring, an O-shaped sealing ring, a sealing ring and a rotating ring. The lower end of the cover, the end cover is set on the upper end of the inner ring, and the lower end of the inner ring is connected to the telescopic end of the adjusting cylinder; the upper end of the inner ring is provided with a water inlet hole, and the lower end of the inner ring is provided with an annular groove. A sealing ring is arranged in the groove, and the thickness of the sealing ring is greater than the depth of the annular groove, and a through hole is also provided in the circumferential direction of the sealing ring; The upper end surface is in contact, and the end cover, inner ring, O-ring, sealing ring, rotating ring and turbine main shaft end cover form an airtight sealing chamber; the RPT type hydraulic turbine main shaft sealing device designed in the present invention prevents pressure water from flowing from the main shaft of the water turbine and the water turbine The leakage between the main shaft end covers into the machine pit floods the water guide bearing and affects the operation.

Description

technical field [0001] The invention relates to a sealing device, in particular to a RPT type water turbine main shaft sealing device. Background technique [0002] A water turbine is a power machine that converts the energy of water flow into rotational mechanical energy, and it belongs to the turbomachinery in fluid machinery. Most modern water turbines are installed in hydropower stations to drive generators to generate electricity. In a hydropower station, the water in the upstream reservoir is led to the turbine through the diversion pipe, which drives the turbine runner to rotate and drives the generator to generate electricity. The water that has done work is discharged downstream through the tail water pipe. The higher the water head and the greater the flow, the greater the output power of the turbine. The sealing device of the main shaft of the water turbine is an important part of the water turbine. The sealing device of the main shaft of the water turbine in t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F03B11/00
CPCY02E10/20
Inventor 王以兴史蒂夫·威尔森吕雪松余友任家宝
Owner NANJING BIJUR MACHINERY PRODS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products