CN214093040U

CN214093040U - Sealing device for technical water supply water filter

Info

Publication number: CN214093040U
Application number: CN202023112893.9U
Authority: CN
Inventors: 胡小刚; 陈立; 李芳同
Original assignee: Chongqing Datang International Wulong Hydropower Development Co Ltd
Current assignee: Chongqing Datang International Wulong Hydropower Development Co Ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-08-31
Anticipated expiration: 2030-12-22

Abstract

The utility model relates to a technical water supply water filter sealing device, including a jar body (1), main shaft (3), bearing frame (2) set up on jar body (1) top, and bearing frame (2) are inserted in main shaft (3), are provided with V type seal assembly (7), bearing (5), gland (6) between bearing frame (2) and main shaft (3), and main shaft (3) upper end is provided with nut (4) of screwing, nut (4), V type seal assembly (7), bearing (5), gland (6) set gradually between bearing frame (2) and main shaft (3), the utility model has the characteristics of sealing performance is good, bearing capacity is strong, reliable and stable, maintenance cost is low, the security is high, energy-conservation, improve the life and the equipment maintenance interval of water filter greatly.

Description

Sealing device for technical water supply water filter

Technical Field

The utility model relates to a hydroelectric power station field, especially a technology water supply water purifier sealing device.

Background

The technical water supply filter is indispensable system equipment in a hydroelectric power generation system, the main task of the technical water supply of a hydropower station is to provide clean pressure cooling water for a generator stator, an upper guide bearing, a thrust bearing, a lower guide bearing, a water guide bearing, a main shaft seal and a water-cooled transformer, and the normal working temperature of the parts plays a vital role in the normal operation of a generator set, but the original water filter is frequently leaked, firstly, the bearing seat is in 2O-shaped seal line contact with the main shaft seal, the seal damage is caused by the operation abrasion, secondly, the abrasion is intensified by the overlarge swing of the position, the leakage is increased, the machine needs to be stopped, the construction time is long, the difficulty is larger, the corresponding cost is high, the problem cannot be solved, and the phenomenon of seal leakage can occur again after the seal defect is changed and the operation is carried out for a period of time.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome prior art's shortcoming, provide a technique water supply water filter sealing device that sealing performance is good, durable, reliable and stable and follow-up equipment maintenance is simple.

The purpose of the utility model is realized through the following technical scheme: the utility model provides a technical water supply water filter sealing device, includes a jar body, main shaft, bearing frame, the bearing frame sets up on jar body top, and the bearing frame is the concentric cylinder of second grade ladder to it has centre bore and two not concentric cylinder recesses of equidimension to open, and the centre bore of bearing frame is inserted to the main shaft, is provided with V type seal assembly between the little recess of bearing frame and the main shaft outside, is provided with the bearing between the big recess of bearing frame and the main shaft outside, and the handing-over department of big recess and little recess is provided with the gland, the main shaft upper end is provided with the nut of screwing.

Preferably, V type seal assembly closely installs in the top of bearing frame and main shaft junction, and V type seal assembly's upper end is provided with the gland, and the top of gland is provided with the bearing, and the top of bearing is connected with the nut of screwing, V type seal assembly comprises support ring, multilayer V type sealing washer and the clamping ring that arranges in proper order, and the material of multilayer V type sealing washer is fluororubber.

Preferably, the nut of screwing can be adjusted from top to bottom, can adjust the nut of screwing again and give a pressure of V type seal assembly after the long-time operation wearing and tearing of main shaft seal, and the V type sealing washer that adopts fluororubber to constitute is under the effect of pressure, and lower part expandes to make it fully contact once more with the main shaft contact surface, consequently after the sealing washer subassembly wearing and tearing on the water purifier leaked, need not open equipment and maintain, reduces manpower maintenance intensity, practices thrift the cost of overhaul, has improved equipment reliability.

The utility model has the advantages of it is following: the problem of frequent water leakage caused by abrasion of a bearing seat and a main shaft sealing ring of a water filter for hydropower station technology water supply can be solved, the sealing adjustment is simple, the sealing assembly can be repeatedly used, the energy is saved, the sealing assembly is novel, the service life of the water filter is greatly prolonged, and the equipment maintenance interval is greatly improved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the V-shaped seal assembly of the present invention;

in the figure: the method comprises the following steps of 1-tank body, 2-bearing seat, 3-main shaft, 4-screwing nut, 5-bearing, 6-gland, 7-V-shaped sealing assembly, 8-pressure ring, 9-V-shaped sealing ring and 10-support ring.

Detailed Description

The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.

As shown in fig. 1, a sealing device for a technical water supply filter comprises a tank body 1, a main shaft 3 and a bearing seat 2, wherein the bearing seat 2 is installed at the top end of the tank body 1 through a bolt, the bearing seat 2 is a second-stage stepped concentric cylinder and is provided with a center hole and two concentric cylinder grooves with different sizes, the main shaft 3 is inserted into the center hole of the bearing seat 2, a V-shaped sealing assembly 7 is arranged between a small groove of the bearing seat 2 and the outer side of the main shaft 3, a bearing is arranged between a large groove of the bearing seat 2 and the outer side of the main shaft 3, a gland 6 is arranged at the joint of the large groove and the small groove, and a screwing nut 4 is arranged at the upper end of the main shaft 3.

The V-shaped sealing assembly 7 is tightly installed above the joint of the bearing seat 2 and the main shaft 3, a gland 6 is arranged at the upper end of the V-shaped sealing assembly 7, a bearing is arranged above the gland 6, and the upper part of the bearing is connected with the screwing nut 4.

As shown in fig. 2, the V-shaped sealing assembly 7 is composed of a support ring 10, a plurality of layers of V-shaped sealing rings 9 and a pressing ring 8 which are sequentially arranged, and the plurality of layers of V-shaped sealing rings 9 are made of fluororubber.

The screwed nut 4 can be adjusted up and down, and after the V-shaped sealing ring 9 is worn and torn when the main shaft 3 runs for a long time, the screwed nut 4 is adjusted downwards to give a compression amount to the V-shaped sealing assembly 7, so that the V-shaped sealing ring 9 is fully contacted with the contact surface of the main shaft 3 again, and therefore after the sealing ring assembly on the water filter is worn and torn and leaked, the equipment does not need to be opened for maintenance, the manpower maintenance intensity is reduced, the maintenance cost is saved, and the equipment reliability is improved.

Claims

1. The utility model provides a technical water supply water filter sealing device, its characterized in that, including a jar body (1), main shaft (3), bearing frame (2) set up on jar body (1) top, and bearing frame (2) are the concentric cylinder of ladder to it has centre bore and two not concentric cylinder recesses of equidimension to open, and the centre bore of bearing frame (2) is inserted in main shaft (3), is provided with V type seal assembly (7) between the little recess of bearing frame (2) and main shaft (3) outside, is provided with the bearing between the big recess of bearing frame (2) and main shaft (3) outside, and the handing-over department of big recess and little recess is provided with gland (6), main shaft (3) upper end is provided with nut (4) of screwing.

2. A technical water filter sealing device according to claim 1, wherein the upper end of the V-shaped sealing assembly (7) is provided with a gland (6), a bearing (5) is arranged above the gland (6), and the upper part of the bearing (5) is connected with the screwing nut (4).

3. A technical water filter sealing arrangement according to claim 1, characterized in that the V-shaped sealing assembly (7) is composed of a support ring (10), a plurality of layers of V-shaped sealing rings (9) and a pressure ring (8) arranged in sequence, the plurality of layers of V-shaped sealing rings (9) being made of viton.