CN2474793Y

CN2474793Y - Plastic high pressure oil spray nozzle installed on plastic thrust bearing bush

Info

Publication number: CN2474793Y
Application number: CN 00253511
Authority: CN
Inventors: 李文善
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-12-16
Filing date: 2000-12-16
Publication date: 2002-01-30
Anticipated expiration: 2010-12-16

Abstract

The utility model discloses a high pressure oil jet nozzle made of reinforced plastics on a plastic thrust bearing tile, comprising a thrust bearing tile billet and an elastic metal plastics tile surface. An oil-feed hole for high pressure oil is provided on the thrust bearing tile billet. The high pressure oil jet nozzle made of plastics is pressed on oil-feed hole of the thrust bearing tile billet by a specially-produced nut, and engages with the oil-feed hole of the high pressure oil through sealing. The central hole of the high pressure oil jet nozzle is communicated with a channel for oiling, and the elastic metal plastics tile surface is higher than the upper edge of the high pressure oil jet nozzle. In the process of the unit starting, running and halt, the thrust bearing has the intact lubricant film, which makes the elastic plastics tile not abrade forever.

Description

On plastic thrust bearing watt, install the high pressure oil nozzle that plastics are made additional

The utility model relates to a kind of thrust bearing segment of hydraulic generator unit, particularly relates to a kind ofly installing the high pressure oil nozzle that plastics are made additional on plastic thrust bearing watt.

The thrust-bearing of the hydraulic generator unit of each hydroelectric station operation of China generally adopts the thrust bearing shoe valve of Babbitt, being in operation, it is low bearing capacity to occur, Wa Wen is very high, the tile kilning accident often appears, therefore, introduced elastomeric plastics watt new material, this material is behind steel unbaked tile tining, the helical of burn-oning copper wire, and compressing teflon is that main plastic made tile is made, the use of elastomeric plastics watt, improve the bearing capacity of unit, reduced Wa Wen, improved the ride quality of thrust-bearing, but find through operation in a few years, elastomeric plastics watt all has wearing and tearing in various degree, even occurs because of an elastomeric plastics watt serious wear tile kilning incident taking place, for overcoming the wearing and tearing of elastomeric plastics watt, people add antiwear additive in teflon, but this can't fundamentally solve the wear problem of elastomeric plastics watt.

The purpose of this utility model is, provides a kind of and install the high pressure oil structure of nozzle that plastics are made additional on plastic thrust bearing watt, to overcome the deficiency of prior art, realizes that elastomeric plastics watt is not worn.

Following mode can realize the utility model:

On plastic thrust bearing watt, install the high pressure oil nozzle that plastics are made additional, comprise thrust-bearing unbaked tile and elastomeric plastics tiling, on the thrust-bearing unbaked tile, be provided with the high pressure oil oil inlet hole, the high pressure oil nozzle that plastics are made is pressed on the oilhole place of thrust-bearing unbaked tile with special nut, be sealed and matched with the high pressure oil oil inlet hole, make it non-leakage, high pressure oil nozzle center hole communicates with oil circuit, and the elastomeric plastics tiling is higher than high pressure oil nozzle top edge.

The utility model has been broken the traditional concept that elastomeric plastics watt can not install the high pressure oil lubricating fitting additional; thrust-bearing high pressure oil lubrication system can be applied on the elastomeric plastics watt; the high pressure oil nozzle that special nut is made plastics is pressed on the oil inlet hole place of thrust-bearing; high pressure oil is non-leakage; oil nozzle and plastics tiling junction are welded together; non-leakage; guarantee that unit is starting operation; shut down in the overall process; the full greasy property of thrust-bearing; thereby make elastomeric plastics watt never wornout; and the rotating part that makes unit be easy to the personnel selection try hard to recommend moving, jiggering; look for throw very convenient.

Fig. 1 is the utility model overall structure schematic representation.

Embodiment:

The special nut 4 of high pressure oil nozzle 3 usefulness that adopts polytetrafluoroethylplastic plastic to make is pressed on the place, last plane of the high pressure oil oil inlet hole on the steel thrust-bearing unbaked tile 1; form high pressure sealing; the center hole of high pressure oil nozzle 3 communicates with oil circuit 6; gland nut 4 is that the nut center hole cooperates with high pressure oil nozzle 3 crest clearances; nut 4 external diameters are screw thread; cooperate with the screw of thrust-bearing unbaked tile 1; nut 4 adopts steel or high strength alloy steel to make; can process cross recess on the nut 4; make things convenient for instrument to tighten; form high pressure sealing at plastics high pressure oil nozzle 3 and steel thrust-bearing unbaked tile 1 surface of contact; reaching under the 14MPa oil pressure 30min can seepage; qualified back is on the thrust-bearing unbaked tile 1 of tining; the weldering pressure zone has the elastomeric plastics tiling 2 based on teflon of spiral copper silk screen 5; elastomeric plastics tiling 2 exceeds high pressure oil nozzle 3 0.5-1.5mm suitable for reading; elastomeric plastics tiling 2 place that combines with the high pressure oil nozzle made from plastics of the same race 3; adding thermofussion welding is integral; ne-leakage; so just high pressure oil nozzle 3 dresses have been soldered on the elastomeric plastics tiling 2; and after the high pressure oil feeding; elastomeric plastics tiling 2 does not have high pressure oil with the junction of metal thrust-bearing unbaked tile 1 and infiltrates; compacting all-in-one-piece elastomeric plastics tiling 2 can not be stripped from; guaranteed of the startup of high pressure oil lubricating fitting at unit; in operation and the shutdown overall process; the full greasy property of thrust-bearing; make elastomeric plastics tiling 2 never wornout; and; the rotating part of unit be easy to the personnel selection try hard to recommend moving, jiggering; look for throw very convenient.

Claims

1, a kind ofly on plastic thrust bearing watt, installs the high pressure oil nozzle that plastics are made additional, comprise thrust-bearing unbaked tile and elastic metal plastic tile face, it is characterized in that: on the thrust-bearing unbaked tile, be provided with the high pressure oil oil inlet hole, the high pressure oil nozzle that plastics are made is pressed on the oil inlet hole place of thrust-bearing unbaked tile with special nut, be sealed and matched with the high pressure oil oil inlet hole, make it non-leakage, high pressure oil nozzle center hole communicates with oil circuit, and the elastic metal plastic tile face is higher than high pressure oil nozzle top edge.