CN214404375U

CN214404375U - Protective cover applied to upper shaft sleeve of movable guide vane of vertical water turbine generator set

Info

Publication number: CN214404375U
Application number: CN202120535238.XU
Authority: CN
Inventors: 官标; 董钟明; 周玉国; 陈典龙; 孙茂军; 邹双喜
Original assignee: China Yangtze Power Co Ltd
Current assignee: China Yangtze Power Co Ltd
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2021-10-15
Anticipated expiration: 2031-03-15

Abstract

A protective cover applied to an upper shaft sleeve of a movable guide vane of a vertical water turbine generator set comprises a sealing sleeve (2) and a sealing cover (1), wherein the sealing sleeve (2) and the sealing cover (1) are both of annular structures, and the sealing cover (1) is detachably connected with the sealing sleeve (2); an air surrounding belt inflating hole is formed in the sealing cover (1), the air surrounding belt inflating hole is communicated with the air surrounding belt (4), and the air surrounding belt (4) is located on the inner wall of the sealing cover (1). The utility model discloses prevent foreign matter such as iron fillings from falling into in the middle of axle sleeve and stator journal clearance, simple structure, convenient to use.

Description

Protective cover applied to upper shaft sleeve of movable guide vane of vertical water turbine generator set

Technical Field

The utility model belongs to axle sleeve protection device field on vertical hydroelectric set movable guide vane, in particular to be applied to axle sleeve visor on vertical hydroelectric set movable guide vane.

Background

The upper shaft sleeve of the movable guide vane is an important part in a water guide mechanism of the water turbine generator set, is structurally matched with the upper shaft neck part of the movable guide vane, and has the functions of maintaining the axial position of the movable guide vane, bearing and transmitting radial force from the movable guide vane and the like. During the installation of the unit, the upper shaft sleeve needs to be preassembled, and after the preassembly is completed, the upper shaft sleeve is drilled and twisted with a positioning pin hole. And impurity foreign matters such as a large amount of tiny iron fillings can be produced in the middle of the drilling and twisting pinhole process, and these iron fillings if the protection is in place a bit in the middle of just falling into the clearance of upper shaft sleeve and stator journal very easily, make clearance and its difficulty and difficult discovery, cause the card between shaft sleeve and journal when later stage activity stator rotation action, make operating torque grow and scratch the axle collar axle sleeve easily. The normal and stable operation of the unit is damaged while the equipment is damaged.

At present, when the positioning pin of the upper shaft sleeve is drilled and twisted, the rubber pad is adopted for simple shielding, and the method cannot effectively prevent foreign matters such as scrap iron and the like from falling into the gap between the upper shaft sleeve and the guide vane shaft neck, so that great risk exists.

Disclosure of Invention

In view of the technical problem that the background art exists, the utility model provides a be applied to axle sleeve visor on vertical hydroelectric set movable guide vane prevents that foreign matters such as iron fillings from falling into in the middle of axle sleeve and the stator journal clearance, simple structure, convenient to use.

In order to solve the technical problem, the utility model discloses following technical scheme has been taken and has been realized:

a protective cover applied to an upper shaft sleeve of a movable guide vane of a vertical water turbine generator set comprises a sealing sleeve and a sealing cover, wherein the sealing sleeve and the sealing cover are both of annular structures, and the sealing cover is detachably connected with the sealing sleeve; the sealing cover is provided with an air surrounding belt inflation hole, the air surrounding belt inflation hole is communicated with the air surrounding belt, and the air surrounding belt is positioned on the inner wall of the sealing cover.

In the preferred scheme, the sealing sleeve is provided with an annular clamping groove, the sealing cover is provided with an annular clamping seat, and the annular clamping seat is matched with the annular clamping groove.

In the preferred scheme, the section of the annular clamping groove is of a T-shaped structure, the section of the annular clamping seat is of a T-shaped structure, the annular clamping groove is located on the upper surface of the sealing sleeve, and the annular clamping seat is located on the lower edge of the sealing cover.

In a preferred scheme, the sealing sleeve is made of an elastic material.

In the preferred scheme, the inner wall of the sealing cover is provided with an air surrounding belt mounting groove, the air surrounding belt is positioned in the air surrounding belt mounting groove, an air surrounding belt inflation tube is arranged on the air surrounding belt, and the air surrounding belt inflation tube is positioned in an air surrounding belt inflation hole.

In a preferred scheme, the air shroud ring is made of elastic materials.

In a preferable scheme, the air surrounding band inflation pipe is detachably connected with the plug.

In a preferred scheme, a valve core is installed in the air filling pipe of the air shroud.

This patent can reach following beneficial effect:

1. the sealing sleeve is used for being sleeved on the upper shaft sleeve, the sealing cover is used for being sleeved on the movable guide vane shaft, after the sealing sleeve is connected with the sealing cover, the air surrounding belt is inflated, the air surrounding belt is expanded and tightly attached to the movable guide vane shaft, the sealing effect is achieved, and foreign matters such as scrap iron and the like are prevented from falling into a gap between the upper shaft sleeve and the guide vane shaft neck.

2. The sealing sleeve is preferably made of rubber, can generate certain compression deformation under the action of the self-weight of the sealing cover, and achieves the sealing effect by utilizing corresponding tightening amount.

3. The purpose of designing the air shroud is: after the air shroud is deflated, a certain gap is formed between the air shroud and the movable guide vane shaft neck, and the sealing cover can be smoothly detached from the movable guide vane shaft neck. The air shroud is filled with air with certain pressure, so that the inner circle of the air shroud is tightly attached to the movable guide vane shaft neck, and the sealing effect is achieved.

Drawings

The invention will be further explained with reference to the following figures and examples:

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a three-dimensional structure diagram of the present invention;

fig. 3 is a top view of the present invention;

fig. 4 is a cross-sectional view (three-dimensional view) of the present invention;

FIG. 5 is a diagram showing the effect of the present invention;

fig. 6 is the effect diagram of the valve inside installed in the air shroud charging pipe of the utility model.

In the figure: the air valve comprises a sealing cover 1, a sealing sleeve 2, an air shroud inflating tube 3, an air shroud 4, a movable guide vane shaft 5, an upper shaft sleeve 6, a plug 7 and a valve inside 8.

Detailed Description

The preferable scheme is as shown in fig. 1 to 6, the protective cover applied to the upper shaft sleeve of the movable guide vane of the vertical water turbine generator set comprises a sealing sleeve 2 and a sealing cover 1, wherein the sealing sleeve 2 and the sealing cover 1 are both of annular structures, and the sealing cover 1 is detachably connected with the sealing sleeve 2; the sealing cover 1 is provided with an air surrounding belt inflation hole which is communicated with the air surrounding belt 4, and the air surrounding belt 4 is positioned on the inner wall of the sealing cover 1.

As shown in fig. 5, the sealing sleeve 2 is used for being placed on the upper shaft sleeve 6, the sealing cover 1 is used for being sleeved on the movable guide vane shaft 5, after the sealing sleeve 2 is connected with the sealing cover 1, the air shroud 4 is inflated, and the air shroud 4 is expanded to be tightly attached to the movable guide vane shaft 5 to play a sealing role.

Furthermore, an annular clamping groove is formed in the sealing sleeve 2, an annular clamping seat is arranged on the sealing cover 1, and the annular clamping seat is matched with the annular clamping groove.

Further, the cross-section of ring-shaped clamping groove is T-shaped structure, the cross-section of ring-shaped clamping seat is T-shaped structure, ring-shaped clamping groove is located on the upper surface of sealing sleeve 2, and ring-shaped clamping seat is located on the lower edge of sealing cover 1.

Further, the sealing sleeve 2 is made of elastic material.

Further, an air surrounding belt installation groove is formed in the inner wall of the sealing cover 1, the air surrounding belt 4 is located in the air surrounding belt installation groove, an air surrounding belt inflation tube 3 is arranged on the air surrounding belt 4, and the air surrounding belt inflation tube 3 is located in the air surrounding belt inflation hole.

Further, the air shroud 4 is made of an elastic material.

Further, the air shroud inflation tube 3 is detachably connected with the plug 7.

The sealing cover 1 is made of hard materials, such as stainless steel, and in order to improve the strength of the sealing cover 1, a circle of reinforcing ribs are arranged on the sealing cover 1 to prevent the air surrounding belt 4 from deforming radially after being inflated.

The sealing sleeve 2 is preferably made of rubber, can generate certain compression deformation under the action of the gravity of the sealing cover 1, and achieves the sealing effect by utilizing corresponding tightness.

The air shroud inflation tube 3 is threaded for threaded connection with a sealing cap, and preferably, a valve core 8 is mounted at the air shroud inflation tube 3, so that the air shroud 4 forms a structure similar to a bicycle inner tube.

The air shroud 4 is made by the rubber material, and after filling into the gas of certain pressure in the air shroud 4, the air shroud pastes tightly with the activity stator journal, reaches sealed effect.

The working principle of the utility model is as follows:

1. the annular clamping seat of the sealing cover 1 is sleeved in the annular clamping groove of the sealing sleeve 2 to be matched with the sealing sleeve 2, and the annular clamping seat is used for blocking and protecting foreign matters such as radial iron chips.

2. The uninflated air shroud 4 is embedded into the air shroud mounting groove of the sealing cover 1 from the inside to the outside of the inner circle of the sealing cover 1. The minimum inner diameter of the air shroud in an uninflated state is slightly larger than the outer diameter of the movable guide vane shaft neck, so that the protective cover is conveniently sleeved into the shaft neck.

3. The assembled protective cover is sleeved into the movable guide vane shaft collar, air with certain pressure is filled into the air shroud band, the inner circle of the air shroud band is tightly attached to the movable guide vane shaft neck without a gap, the air inlet is blocked by a screw plug for pressure maintaining, and foreign matters such as axial iron chips and the like are blocked and protected.

4. After the protection of the protective cover is finished, foreign matters such as scrap iron and the like on the air shroud ring are removed completely by using the magnet, the air inlet pipe plug is disassembled, so that the inner circle of the air shroud ring is separated from the shaft neck, and the protective cover is disassembled from bottom to top.

The above-mentioned embodiments are merely preferred embodiments of the present invention, and should not be considered as limitations of the present invention, and the protection scope of the present invention should be defined by the technical solutions described in the claims, and includes equivalent alternatives of technical features in the technical solutions described in the claims. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.

Claims

1. The utility model provides a be applied to axle sleeve visor on vertical hydroelectric set movable guide vane which characterized in that: the sealing device comprises a sealing sleeve (2) and a sealing cover (1), wherein the sealing sleeve (2) and the sealing cover (1) are both in annular structures, and the sealing cover (1) is detachably connected with the sealing sleeve (2); an air surrounding belt inflating hole is formed in the sealing cover (1), the air surrounding belt inflating hole is communicated with the air surrounding belt (4), and the air surrounding belt (4) is located on the inner wall of the sealing cover (1).

2. The protective cover applied to the upper shaft sleeve of the movable guide vane of the vertical water turbine generator set according to claim 1, is characterized in that: an annular clamping groove is formed in the sealing sleeve (2), an annular clamping seat is arranged on the sealing cover (1), and the annular clamping seat is matched with the annular clamping groove.

3. The protective cover applied to the upper shaft sleeve of the movable guide vane of the vertical water turbine generator set according to claim 2, is characterized in that: the cross section of the annular clamping groove is of a T-shaped structure, the cross section of the annular clamping seat is of a T-shaped structure, the annular clamping groove is located on the upper surface of the sealing sleeve (2), and the annular clamping seat is located on the lower edge of the sealing cover (1).

4. The protective cover applied to the upper shaft sleeve of the movable guide vane of the vertical water turbine generator set according to claim 1, 2 or 3, wherein: the sealing sleeve (2) is made of elastic material.

5. The protective cover applied to the upper shaft sleeve of the movable guide vane of the vertical water turbine generator set according to claim 1, is characterized in that: an air surrounding belt installation groove is formed in the inner wall of the sealing cover (1), the air surrounding belt (4) is located in the air surrounding belt installation groove, an air surrounding belt inflation tube (3) is arranged on the air surrounding belt (4), and the air surrounding belt inflation tube (3) is located in the air surrounding belt inflation hole.

6. The protective cover applied to the upper shaft sleeve of the movable guide vane of the vertical water turbine generator set according to claim 1 or 5, is characterized in that: the air shroud (4) is made of elastic material.

7. The protective cover applied to the upper shaft sleeve of the movable guide vane of the vertical water turbine generator set according to claim 6, is characterized in that: the air surrounding band inflation tube (3) is detachably connected with the plug (7).

8. The protective cover applied to the upper shaft sleeve of the movable guide vane of the vertical water turbine generator set according to claim 7, is characterized in that: the air surrounding band inflation tube (3) is internally provided with a valve core (8).