CN210025131U

CN210025131U - Special tool for detaching guide vane sleeve of horizontal water turbine

Info

Publication number: CN210025131U
Application number: CN201920492608.9U
Authority: CN
Inventors: 杨伟国; 李红军; 范泽勇; 罗文强; 柳超
Original assignee: Baozhusi Hydroelectric Power Generation Factory Of Huadian Sichuan Power Generation Co Ltd
Current assignee: Baozhusi Hydroelectric Power Generation Factory Of Huadian Sichuan Power Generation Co Ltd
Priority date: 2019-04-12
Filing date: 2019-04-12
Publication date: 2020-02-07
Anticipated expiration: 2029-04-12

Abstract

The utility model provides a demolish telescopic specialized tool of horizontal hydraulic turbine stator, is a ring shape plate to the plywood, and the atress board is a circular plate, and is the same with the diameter of atress board the excircle diameter of plywood, and six stands are fixed between plywood and atress board along same circumference equipartition, and the equipartition is opened on the plywood and is used as passing the bolt that closes and close the sleeve body and close the through-hole with the three that the plywood was fixed mutually. The tool can not damage the guide vane sleeve in the guide vane sleeve dismantling process, and has the characteristics of time and labor saving, safety, high efficiency and the like.

Description

Special tool for detaching guide vane sleeve of horizontal water turbine

Technical Field

The utility model relates to a machine parts extracting tool is the telescopic special extracting tool of hydraulic turbine stator particularly.

Background

The guide vane sleeve is an important component of the water distributor of the water turbine. And the guide vane sleeve sealing rubber ring is easy to be damaged due to the rotating friction of the guide vane, thereby causing the water leakage of the guide vane sleeve. The guide vane sleeve sealing rubber ring needs to be integrally pulled out of the sleeve for replacement, cleaned and replaced by new rubber. However, in the process of pulling out the sleeve, because no special tool is provided, only two stop blocks are symmetrically welded on the sleeve body, and the sleeve is symmetrically ejected by two hydraulic jacks. After ejection, the welded stopper is removed by carbon arc gouging. This method is time consuming and labor intensive and can be harmful to the sleeve body.

The water turbine needs to be overhauled every 6-8 years, a water distributor needs to be thoroughly checked, water leakage exists at the position of a guide vane shaft sleeve, the shaft neck of a guide vane is abraded, the sleeve body is cavitated, and the guide vane sleeve of the water turbine needs to be pulled out. The guide vane crank arm is firstly pulled out when the sleeve is disassembled, the bolt is loosened, the sleeve is jacked up by jackscrews symmetrically, and the jackscrews are not designed in the guide vane sleeve of the power station of the violet dam. Even if a part of horizontal units are designed with jackscrews, the matching clearance between the sleeve and the outer ring of the water distributor is small, the sleeve can not be ejected out for a long time, and the sleeve is corroded. A unit of 16 guide vane sleeves consumes a large amount of manpower and material resources if the traditional method is continuously used. In addition, the traditional method welds the sleeve body, which will damage the sleeve body and affect the stability and reliability of the device. In addition, in the traditional method, two hydraulic jacks are required to be symmetrically and synchronously ejected, but in the operation of actual maintenance personnel, the condition that the hydraulic jacks are not operated synchronously is inevitable, so that a sleeve with a small gap between the sleeve and the outer ring of the water distributor is held in the outer ring of the water distributor and is more difficult to pull out.

The traditional method has the following defects: 1. the ejection stop block needs to be welded and planed after ejection, and the ejection stop block cannot be planed once and for all. Easily causes damage to the sleeve body. 2. In the process of using two jacks to eject symmetrically, the speed difference of the two jacks is easy to occur. The guide vane sleeve is blocked in the outer ring of the water distributor and is more difficult to pull out. 3. The required tools and instruments are multiple, the required maintenance workers are multiple, and time and labor are consumed.

Interpretation of terms:

the guide vane sleeve is an important component of the water distributor of the water turbine. The guide vane sleeve is fixed on the outer ring of the horizontal unit, and the shaft sleeve of the movable guide vane of the water turbine is installed in the guide vane sleeve.

A water distributor is a facility for guiding water. The water turbine water distributor is one of core components of the water turbine generator set, is a device for controlling the direction and the size of water flow entering the generator set during operation, and is of great importance to the stability and the safety of the operation of the whole generator set.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a demolish the process and can not cause harm, labour saving and time saving, safe efficient to the impeller sleeve and demolish telescopic specialized tool of horizontal hydraulic turbine stator to the problem that prior art exists.

The purpose of the utility model is realized like this:

the utility model provides a demolish telescopic specialized tool of horizontal hydraulic turbine stator, is a ring shape plate to the plywood, and the atress board is a circular plate, and is the same with the diameter of atress board the excircle diameter of plywood, and six stands are fixed between plywood and atress board along same circumference equipartition, and the equipartition is opened on the plywood and is used as passing the bolt that closes and close the sleeve body and close the through-hole with the three that the plywood was fixed mutually.

Two lifting holes for lifting are formed in the stress plate, and the connecting line of the two lifting holes passes through the circle center of the stress plate.

The six upright posts are welded between the stress plate and the handle plate.

Six upright post welding holes are uniformly distributed on the plywood, and six upright post welding holes are correspondingly and uniformly distributed on the stress plate.

The excircle diameter 535mm of plywood, interior circle diameter 405mm, the length of stand welding hole is 40 x 40mm wide, closes through-hole diameter 30mm, and the distance of two lewis holes on the atress board and the centre of a circle of atress board is 100 mm.

Compared with the prior art, the utility model has the following characteristics and advantages:

1. the sleeve extractor and the sleeve are tightly held by a holding bolt without welding. Has no damage to the sleeve body. And the sleeve extractor can be used repeatedly, and is once and for all.

2. Only one 100t hydraulic jack is used for operation. As long as the hydraulic jack is ensured to be positioned at the center of the guide vane shaft, the pull-out force is parallel to the axial direction of the guide vane. The situation of suffocating force can not be caused.

3. Saving manpower, fast, the security is high, efficient.

4. The utility model is a special tool which can be repeatedly used, and the sleeve overhauling process can be simplified.

The utility model discloses can more simply the efficient accomplish the sleeve and extract work. The overhaul work of the sleeve is simplified: such as sleeve seal ring replacement, vane journal inspection, etc. And does not cause damage to the sleeve body. The traditional method needs 32 working hours for pulling out a sleeve, and relates to special work types: and (6) welding. And the utility model discloses extract only need 8 man-hours alone sleeve. The 16 sleeves of one machine set can save 384 working hours.

The utility model discloses having successfully used at the stator sleeve extraction in-process, having solved the problem that the stator sleeve extraction in-process exists effectively, having saved a large amount of manpower and materials, reduced intensity of labour by a wide margin, greatly improved work efficiency to effectively guarantee to overhaul technology. The utility model discloses except being used for the stator sleeve to extract work, still can be used to the stator sleeve of other similar form units to extract work.

Drawings

Figure 1 is a perspective view of the tool in use with a hydraulic jack.

Fig. 2 is a perspective view of the force-receiving plate shown in fig. 1 after being partially cut.

Fig. 3 and 4 are a front view and a top view, respectively, of the present tool (showing the force-bearing plate).

Fig. 5 is a front view of the handle plate shown in fig. 1 and 2.

Detailed Description

In the figure, 1-a sleeve body (namely a guide vane sleeve of a water turbine), 2-a sleeve extractor handle plate, 3-a handle bolt, 4-a hydraulic jack, 5-a sleeve extractor upright post, 6-a sleeve extractor stress plate, 7-a sleeve extractor hanging hole and 8-a guide vane shaft neck.

Fig. 1, fig. 2 show, a demolish telescopic specialized tool of horizontal hydraulic turbine stator, is a ring shape plate to plywood 2, and atress board 6 is a circular plate, and is the same with the diameter of atress board 6 to the excircle diameter of plywood 2, and six stands 5 are fixed between plywood and atress board along same circumference equipartition, and the equipartition is opened on plywood 2 and is used as closing bolt 3 and pass and close sleeve body 1 with the three through-hole 2a that closes that plywood 2 is fixed mutually. Two lifting holes 7 for lifting are formed in the stress plate 6, and the connecting line of the two lifting holes passes through the circle center of the stress plate. Six vertical columns 5 are welded between the stress plate 6 and the handle plate 2. Alternatively, six vertical columns are directly welded between the bottom surface of the stress plate 6 and the top surface of the handle plate 2.

Referring to fig. 3-5, six upright welding holes 2b are uniformly distributed on the plywood 2, and six upright welding holes are correspondingly uniformly distributed on the stress plate 6. The diameter of the outer circle of the plywood 2 is 535mm, the diameter of the inner circle is 405mm, the length and the width of the upright post welding hole 2b are 40mm, the diameter of the through hole 2a is 30mm, and the distance between the two hanging holes on the stress plate 6 and the circle center of the stress plate is 100 mm.

As shown in fig. 3, a special tool for removing a guide vane sleeve of a water turbine comprises: 2. the combined plate comprises a combined plate 3, a combined bolt 4, a hydraulic jack (100T)5, an upright post 6 and a stress plate. Two puller hanging hole items 7 are arranged at the top of the sleeve puller, so that the mounting and the hoisting of the puller are convenient. The plywood item 2 and the stress board item 6 are fixedly connected (such as welded or integrated) through two ends of the six upright post items 5, and three handle through holes are uniformly distributed on the plywood.

When the combined screw is used, the three groups of combined screws 3 penetrate into the through holes of the combined plates and the flange screw holes of the guide vane sleeves, and are fastened by nuts. The jack 4 is placed on the guide vane shaft neck 8, and the jack 4 is positioned between the guide vane shaft neck 8 and the stress plate 6; the piston rod of the jack 13 extends to prop against the stress plate 6 to lift the stress plate 6 upwards, and the force is transmitted through the upright post 5, the stress plate 2 and the handle bolt 3. The guide vane sleeve body 1 is lifted upwards along the guide vane shaft neck 8, and then the guide vane sleeve body 1 can be taken out from the guide vane shaft neck 8.

The utility model comprises a plywood, a stress plate, a column, a handle hole, a handle bolt and a hydraulic jack; the atress board with pass through six stands to be connected the plywood, six stand evenly distributed to guarantee the intensity of sleeve puller. 3 through holes are evenly distributed on the handle-combined plate combined with the sleeve body. The double-end screw rod penetrates through the handle through hole of the handle plywood and the screw hole of the guide vane sleeve, the nuts are screwed on the two ends of the screw rod and tightened, and the sleeve extractor and the sleeve body are combined into a whole through three M24 double-end bolts. At the moment, the hydraulic jack is placed on the guide vane shaft neck, the gun is pressed by the pressing jack, and the hydraulic jack extends to be pressed on the stress plate. So that the sleeve is ejected slowly and uniformly.

Claims

1. The utility model provides a demolish telescopic specialized tool of horizontal hydraulic turbine stator, a serial communication port, be a ring shape plate plywood to plywood (2), atress board (6) are a circular plate, and the excircle diameter of plywood (2) is the same with the diameter of atress board (6), six stand (5) are fixed between plywood and atress board along same circumference equipartition, open the equipartition on plywood (2) and have as passing close bolt (3) and close sleeve body (1) and three that plywood (2) is fixed mutually close through-hole (2 a).

2. The special tool for dismounting the guide vane sleeve of the horizontal water turbine as claimed in claim 1, wherein the stress plate (6) is provided with two lifting holes (7) for lifting, and a connecting line of the two lifting holes passes through a circle center of the stress plate.

3. The special tool for dismantling the guide vane sleeve of the horizontal water turbine as claimed in claim 2, wherein the six uprights (5) are welded between the stress plate (6) and the handle plate (2).

4. The special tool for dismounting the guide vane sleeve of the horizontal water turbine as claimed in claim 3, wherein six upright welding holes (2b) are uniformly distributed on the plywood (2), and six upright welding holes are correspondingly and uniformly distributed on the stress plate (6).

5. The special tool for removing the guide vane sleeve of the horizontal water turbine as claimed in claim 4, wherein the diameter of the outer circle of the handle plate (2) is 535mm, the diameter of the inner circle of the handle plate is 405mm, the length and the width of the upright post welding hole (2b) are 40 x 40mm, the diameter of the handle through hole (2a) is 30mm, and the distance between the two hanging holes on the stress plate (6) and the center of the stress plate is 100 mm.