CN218934827U

CN218934827U - Lubricating and cooling device of water supply pump

Info

Publication number: CN218934827U
Application number: CN202120821392.3U
Authority: CN
Inventors: 彭笙洋; 叶太福; 陈林
Original assignee: Sichuan Huaneng Fujiang Hydropower Co Ltd
Current assignee: Sichuan Huaneng Fujiang Hydropower Co Ltd
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2023-04-28
Anticipated expiration: 2031-04-21

Abstract

The utility model discloses a lubrication cooling device of a water supply pump, which relates to the field of hydropower stations and comprises a water cooling piece, wherein a cooling groove is concavely arranged on the inner side wall of a lower shaft sleeve seat body of the water supply pump, and a water outlet of the water cooling piece is communicated with a water inlet of the cooling groove; through setting up the cooling tank at the inside wall of lower axle sleeve pedestal, the delivery port of water-cooling spare and the water inlet intercommunication of cooling tank, when the pivot of working shaft rotates, the water-cooling spare is with the cooling water liquid leading-in cooling tank in, the cooling water liquid carries out cooling lubrication to the pivot of lower axle sleeve pedestal and working shaft, avoid lower axle sleeve pedestal and axle wearing and tearing seriously, lead to the condition of lower axle sleeve pedestal and axle clearance increase even, the effectual operating life who prolongs the water pump has reduced maintenance cycle, improvement work efficiency.

Description

Lubricating and cooling device of water supply pump

Technical Field

The utility model relates to the field of hydropower stations, in particular to a lubricating and cooling device of a water supply pump.

Background

Technical water supply systems are one of the important systems in hydroelectric generating sets. The system bears the supply function of internal cooling water such as an upper guide bearing, a thrust bearing, a lower guide bearing, a water guide bearing, an air cooler and the like of the water turbine unit, and the technical water supply system consists of unit cooling water, a pipeline, a technical water supply pump and a control system thereof, thereby ensuring the safe and stable operation of the unit. The power in the technical water supply system comes from a water supply pump, the circulating water source comes from tail water, and the water filter is arranged at the inlet end of the water pump so as to prevent larger impurities in the water from entering the pump to damage the overflow part of the pump.

A centrifugal pump is commonly used as a water supply pump, and the main components of the centrifugal pump are as follows: the water pump is damaged mainly by small gap between the lower shaft sleeve and the shaft, high-speed running of the water pump and increased running vibration and swing of the water pump, so that mutual friction is caused; when the mutual friction gap between the lower shaft sleeve and the shaft is increased to be larger than the gap between the impeller and the mouth ring, the lower shaft sleeve loses the effect of limiting the swing degree of the impeller, the impeller and the mouth ring rub, so that the water pump is damaged, and meanwhile, the water outlet efficiency of the water pump is reduced due to the overlarge gap between the impeller and the mouth ring; a lubrication cooling system is not designed between the lower shaft sleeve and the shaft, dry friction is caused in high-speed operation with small relative clearance, the shaft sleeve and the shaft are severely worn, and the clearance between the shaft sleeve and the shaft is increased.

Disclosure of Invention

The utility model aims to solve the problems and designs a lubrication and cooling device of a water supply pump.

The utility model realizes the above purpose through the following technical scheme:

the lubricating and cooling device of the water supply pump comprises a water cooling piece, wherein a cooling groove is concavely formed in the inner side wall of the lower shaft sleeve seat body of the water supply pump, and the water outlet of the water cooling piece is communicated with the water inlet of the cooling groove.

Further, the cooling tank is of a spiral structure, and a water inlet of the cooling tank is positioned at the lower end of the cooling tank.

Further, a connecting opening is formed in the pump body of the water supply pump, and a water inlet of the water cooling piece is communicated with the connecting opening.

Further, the water cooling piece comprises a filter, and a water inlet and a water outlet of the filter are respectively communicated with the connecting opening and the water inlet of the cooling groove.

Further, the water cooling piece comprises a pressure gauge and a flow indicator, and the connecting opening is sequentially connected with the pressure gauge, the flow indicator and the filter.

The utility model has the beneficial effects that: through setting up the cooling tank at the inside wall of lower axle sleeve pedestal, the delivery port of water-cooling spare and the water inlet intercommunication of cooling tank, when the pivot of working shaft rotates, the water-cooling spare is with the cooling water liquid leading-in cooling tank in, the cooling water liquid carries out cooling lubrication to the pivot of lower axle sleeve pedestal and working shaft, avoid lower axle sleeve pedestal and axle wearing and tearing seriously, lead to the condition of lower axle sleeve pedestal and axle clearance increase even, the effectual operating life who prolongs the water pump has reduced maintenance cycle, improvement work efficiency.

Drawings

FIG. 1 is a schematic view of a lubrication and cooling device of a water pump according to the present utility model;

FIG. 2 is a schematic view of the structure of a cooling tank in the lubrication cooling device of the water pump of the present utility model;

wherein corresponding reference numerals are as follows:

1-lower shaft sleeve base body, 2-cooling tank, 3-connection opening, 4-pump body, 5-filter, 6-manometer, 7-indicator and 8-axle.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships conventionally put in place when the inventive product is used, or the directions or positional relationships conventionally understood by those skilled in the art are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in a specific direction, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, terms such as "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The following describes specific embodiments of the present utility model in detail with reference to the drawings.

As shown in fig. 2, the lubrication cooling device of the water supply pump comprises a water cooling piece, wherein the lower shaft 8 of the water supply pump is sleeved on the inner side wall of the base body 1 and is concavely provided with a cooling groove 2, and the water outlet of the water cooling piece is communicated with the water inlet of the cooling groove 2.

As shown in fig. 2, the cooling tank 2 has a spiral structure, and the water inlet of the cooling tank 2 is located at the lower end of the cooling tank 2.

As shown in FIG. 1, the pump body 4 of the water supply pump is provided with the connecting opening 3, the water inlet of the water cooling piece is communicated with the connecting opening 3, and the water pressure in the pump body 4 is used as a power source to guide the cooling water to the cooling piece, so that the additional power source is not needed to drive the flow of the cooling water, the cost is effectively saved, the starting of the water supply pump is ensured, and meanwhile, the cooling water enters between the lower shaft 8 sleeve seat body 1 and the shaft 8, and the lower shaft 8 sleeve seat body is cooled and lubricated.

As shown in fig. 1, the water cooling member comprises a filter 5, wherein the water inlet and the water outlet of the filter 5 are respectively communicated with the connecting opening 3 and the water inlet of the cooling tank 2, and the cooling water entering the cooling tank 2 is filtered through the filter 5 so as to prevent larger impurities in the cooling water from entering the pump to damage the overflow part of the pump.

As shown in fig. 1, the water cooling member includes a pressure gauge 6 and a flow indicator 7, and the connection opening 3 is connected with the pressure gauge 6, the flow indicator 7 and the filter 5 in this order.

The working principle of the lubrication cooling device of the water supply pump is as follows:

when the water supply pump is started, partial water in the cavity of the water pump is pressed into the cooling piece by the water pressure in the pump body 4 to serve as cooling water, the cooling water sequentially passes through the pressure gauge 6, the flow indicator 7 and the filter 5, the cooling water enters the cooling groove 2 of the lower shaft 8 sleeve seat body 1 after being filtered by the filter 5, the cooling water is arranged between the lower shaft 8 sleeve seat body 1 and the shaft 8, centrifugal force is generated on the cooling water when the shaft 8 rotates, the cooling water flows upwards along with the spiral cooling groove 2, cooling and lubrication of the lower shaft 8 sleeve seat body 1 and the shaft 8 are realized, the situation that the abrasion of the lower shaft 8 sleeve seat body 1 and the shaft 8 is serious and the gap between the lower shaft 8 sleeve seat body 1 and the shaft 8 is increased is avoided.

The technical scheme of the utility model is not limited to the specific embodiment, and all technical modifications made according to the technical scheme of the utility model fall within the protection scope of the utility model.

Claims

1. The lubrication cooling device of the water supply pump is characterized in that: including the water-cooling piece, the inside wall indent of the lower axle sleeve pedestal of working shaft is provided with the cooling tank, and the delivery port of water-cooling piece communicates with the water inlet of cooling tank, and the cooling tank is spiral structure, and the water inlet of cooling tank is located the lower extreme of cooling tank, has seted up connecting opening on the pump body of working shaft, and the water inlet and the connecting opening intercommunication of water-cooling piece, the water-cooling piece include the filter, and the water inlet and the delivery port of filter communicate with the water inlet of connecting opening and cooling tank respectively.

2. The lubrication and cooling device of a water supply pump according to claim 1, wherein: the water cooling piece comprises a pressure gauge and a flow indicator, and the connecting opening is sequentially connected with the pressure gauge, the flow indicator and the filter.