阅读说明：本技术 一种风电主轴密封圈现场在线更换工装及方法 (On-site on-line replacement tool and method for wind power main shaft sealing ring ) 是由 汤永江 何先照 赵海燕 李陈 罗勇水 于 2019-08-16 设计创作，主要内容包括：本发明公开了一种风电主轴密封圈现场在线更换工装及方法,包括：定位块,用于定位密封圈；若干块压紧块,与定位块相对,用于压紧密封圈；压紧块与定位块可拆卸固定,密封圈位于压紧块与定位块之间。本发明的有益之处在于通过工装能够快速完成密封圈的夹紧,从而能够实现密封圈的现场割断和现场连接固定,能够保证密封圈线切割的便捷性,以及方便密封圈在现场连接固定,能够保证切割后的密封圈在套设上主轴后粘胶连接时保证切口对齐,分割面唇口精准对接,有效保证了密封圈的粘接强度、密封性能和使用寿命,减轻了工人的劳动强度和操作难度。(The invention discloses a tool and a method for on-site online replacement of a sealing ring of a wind power main shaft, which comprises the following steps: the positioning block is used for positioning the sealing ring; the pressing blocks are opposite to the positioning blocks and used for pressing the sealing rings; the pressing block and the positioning block are detachably fixed, and the sealing ring is located between the pressing block and the positioning block. The tool has the advantages that the tool can quickly clamp the sealing ring, so that the sealing ring can be cut off and connected and fixed on site, the convenience of linear cutting of the sealing ring can be ensured, the sealing ring can be connected and fixed on site conveniently, cut-outs can be aligned when the cut sealing ring is connected by glue after being sleeved on the main shaft, the lips of the cutting surfaces are in accurate butt joint, the bonding strength, the sealing performance and the service life of the sealing ring are effectively ensured, and the labor intensity and the operation difficulty of workers are reduced.)

1. The utility model provides a wind-powered electricity generation main shaft sealing washer is at scene changes frock on line, characterized by includes:

the positioning block is used for positioning the sealing ring;

the pressing blocks are opposite to the positioning blocks and used for pressing the sealing rings;

the pressing block and the positioning block are detachably fixed, and the sealing ring is located between the pressing block and the positioning block.

2. The on-site on-line replacement tool for the sealing ring of the wind power main shaft according to claim 1, wherein a positioning groove is formed in the positioning block, a linear cutting groove is formed in the side surface of the positioning groove, the depth of the cutting groove is 1 to 1.1 times of that of the positioning groove, and the cross-sectional shape of the positioning groove is the same as the outer cross-sectional shape of the sealing ring.

3. The on-site on-line replacement tool for the sealing ring of the wind power main shaft according to claim 1, wherein a pressing strip is arranged on one side of the pressing block, which faces the positioning block, and the cross-sectional shape of the pressing strip is the same as the inner cross-sectional shape of the sealing ring.

4. The on-site on-line replacement tool for the sealing ring of the wind power main shaft according to claim 1, wherein one end of the pressing block is rotatably connected with the positioning block, and the other end of the pressing block is fixed with the positioning block through a clamp.

5. The on-site on-line replacement tool for the sealing ring of the wind power main shaft according to claim 2, wherein two ends of the positioning block, which are arranged along the sealing ring, are respectively provided with a pressing block, and the cutting groove is positioned in the middle of the positioning block.

6. The on-site on-line replacement tool for the sealing ring of the wind power main shaft according to claim 1, 2, 3, 4 or 5, is characterized in that a vertical sliding groove is formed in each compression block and perpendicular to the bottom surface of each compression block, a guide sliding block is arranged in each vertical sliding groove, a compression rod is connected between the guide sliding blocks arranged in two adjacent compression blocks and can move along the vertical sliding grooves, and a cutting knife is arranged on the bottom surface of each compression rod.

7. The on-site on-line replacement tool for the sealing ring of the wind power main shaft according to claim 6, wherein the lower end of the vertical chute is penetrated, an auxiliary pressing strip is arranged on the lower side of the guide sliding block, and the cross section of the auxiliary pressing strip is the same as the inner cross section of the sealing ring.

8. The on-site on-line replacement tool for the sealing ring of the wind power main shaft according to claim 6, wherein a sealing cover is arranged at the upper end of the vertical sliding groove, and an extension spring connected with the sealing cover is arranged on the upper side of the guide sliding block.

9. The on-site on-line replacement tool for the sealing ring of the wind power main shaft according to claim 8, wherein the vertical sliding grooves in the two adjacent compression blocks are positioned on opposite sides of the two compression blocks, the lower end of the sealing cover is provided with a lifting hook, and the upper end of the extension spring is provided with a fixing ring matched with the lifting hook.

10. The on-site on-line tool replacing method for the wind power main shaft sealing ring based on the claims 1 to 9 comprises the following steps:

A. cutting the whole sealing ring or cutting the sealing ring with the cut section being stained; placing a sealing ring to be processed into a positioning groove in a positioning block, closing pressing blocks at two ends of the positioning block, locking the pressing blocks by using a clamp, and cutting off the sealing ring by using a cutting knife to exert force downwards along a cutting groove of the positioning block;

B. sleeving the divided sealing ring into a main shaft of the wind turbine generator;

C. bonding the divided sealing rings; cleaning a cutting surface of a sealing ring by using a cleaning agent, uniformly coating adhesive on the cutting surface, quickly placing the cutting surface of the sealing ring into a positioning groove of a tool which is not provided with a cutting knife after butt joint, closing pressing blocks at two ends of a positioning block, locking the pressing blocks by using a clamp, uniformly heating the cutting surface, loosening the clamp after the adhesive is cured, and withdrawing the tool;

D. and mounting the bonded sealing ring on a required position on the main shaft.

Technical Field

The invention relates to the technical field of wind power engines, in particular to a tool and a method for on-site online replacement of a sealing ring of a wind power main shaft.

Background

The main shaft of the wind driven generator needs to be provided with a sealing device to solve the problem of grease leakage of a main shaft bearing, for example, a utility model named as 'a wind driven generator main shaft sealing device' which is disclosed in Chinese patent document CN 204900831U and published as 2015, 12 and 23.A patent application discloses a wind driven generator main shaft sealing device which comprises a shaft sleeve fixed on a main shaft and an end cover fixed on a bearing seat, wherein a labyrinth sealing structure is formed between the end cover and the shaft sleeve and is used for reducing grease leakage in the sealing device; and a sealing element is arranged between the outer side surface of the shaft sleeve and the end cover and is used for preventing grease leakage outside the sealing device. The sealing is realized by a plurality of sealing elements, and the defects are that: the design service life of the wind generating set is 20 years, the service life of the main shaft sealing ring is usually only about 5 years, the conditions of aging failure and accidental damage of the sealing ring and the like inevitably exist in the service life cycle of the set, and the wind generating set serving as an energy conversion device cannot be stopped for a long time, so the main shaft sealing ring needs to be replaced on site; when the sealing ring is replaced on site, because all parts of the main shaft assembly are installed and connected in place, the integral sealing ring cannot be adopted, and the integral sealing ring needs to be replaced by a cutting and bonding mode. After the sealing ring is cut and bonded, the lip goodness fit and bonding strength of the cut surface directly influence the sealing performance and service life of the replaced sealing ring.

At present, a manual mode is usually adopted when a main shaft sealing ring of a wind turbine generator is replaced on line on site. Cutting off the integral sealing ring by a blade, winding the sealing ring on the main shaft after cutting off, uniformly coating glue on the cutting surfaces, butting the cutting surfaces of the sealing ring by hands, keeping and heating for about 30 minutes, and installing the sealing ring at a specified position after the glue is cured. The manual cutting and bonding method for replacement has the following problems: the flatness of the cutting surface of the integral sealing ring is cut manually, so that the bonding strength of the cutting surface of the sealing ring is influenced; the sealing ring is bonded manually, so that the goodness of fit of a cutting surface of the sealing ring is poor, and the sealing property of the sealing ring is influenced; the sealing ring is bonded and cured within about 30min, the cutting surface of the sealing ring needs to be pressed and maintained by hands, and the labor intensity and the operation difficulty of workers are increased.

Therefore, the wind power main shaft sealing ring on-site on-line replacement tool and method which are high in cutting sealing ring precision and convenient for alignment and bonding of the cut sealing ring are designed to improve the on-line replacement efficiency of the main shaft sealing ring of the wind generating set.

Disclosure of Invention

In order to overcome the defects that a cutting surface of a sealing ring is difficult to be matched and bonded when the sealing ring of a main shaft is replaced manually, and the replacement efficiency of the sealing ring is low, the invention provides the tool and the method for replacing the sealing ring of the main shaft on site on line.

In order to achieve the above object, the present invention adopts the following technical solutions.

The utility model provides a wind-powered electricity generation main shaft sealing washer is at scene changes frock on line, includes: the positioning block is used for positioning the sealing ring;

the pressing blocks are opposite to the positioning blocks and used for pressing the sealing rings; the pressing block and the positioning block are detachably fixed, and the sealing ring is located between the pressing block and the positioning block. The clamping of the sealing ring can be completed quickly through the tool, so that the field cutting and the field connection fixing of the sealing ring can be realized, the convenience of linear cutting of the sealing ring can be guaranteed, the sealing ring can be conveniently connected and fixed in the field, the cut alignment of the sealing ring after cutting is guaranteed when the sealing ring is connected with the spindle in a viscose mode after the sealing ring is sleeved, the lips of the dividing surfaces are accurately butted, the bonding strength, the sealing performance and the service life of the sealing ring are effectively guaranteed, and the labor intensity and the operation difficulty of workers are reduced.

Preferably, a positioning groove is arranged in the positioning block, a linear cutting groove is arranged on the side face of the positioning groove, the depth of the cutting groove is 1-1.1 times of that of the positioning groove, and the cross section shape of the positioning groove is the same as that of the outer cross section of the sealing ring. The installation of the sealing ring is convenient; cut the degree of depth in cut groove and be not less than positioning groove, guarantee to cut off the sealing washer cross-section completely through the cutting knife, cut groove and carry on spacingly to the cutting knife, make the cut apart face parallel and level on the sealing washer through cutting cut groove, make things convenient for subsequent the aliging of sealing washer to bond.

Preferably, one side of the pressing block, which faces the positioning block, is provided with a pressing strip, and the cross section of the pressing strip is the same as the inner cross section of the sealing ring. The inner side surface of the sealing ring is compressed by the compression strip, the compression strip is the same as the inner cross section of the sealing ring in shape, so that the compression sealing ring can be completely filled, the limiting reliability of the sealing ring is guaranteed, and the sealing ring can be uniformly compressed on the upper side and the lower side when being compressed due to the fact that the shape of the compression strip is the same as the inner cross section of the sealing ring, and the flatness of the dividing surface of the sealing ring is guaranteed.

Preferably, one end of the pressing block is rotatably connected with the positioning block, and the other end of the pressing block is fixed with the positioning block through a clamp. Fixed convenient, the one end and the rotatable company of locating piece of compact heap clean, make things convenient for the fixed point installation between compact heap and the locating piece, accomplish quick fixation through clamp.

Preferably, the two ends of the positioning block, which are arranged along the sealing ring, are respectively provided with a pressing block, and the cutting groove is positioned in the middle of the positioning block. The compact heap compresses tightly at the both ends of locating piece, and it is reliable to compress tightly the fixed action, and the sealing washer shifts when can preventing to cut the sealing washer through compact heap and locating piece cooperation, guarantees the cutting parallel and level degree of sealing washer, cuts the intermediate position that the cut groove is located the locating piece, and the cutting is convenient.

As preferred, be equipped with the vertical spout that vertical compact heap bottom surface set up in the compact heap, be equipped with the direction slider in the vertical spout, connect between the direction slider that sets up in the double-phase adjacent compact heap and be equipped with the depression bar, the depression bar can be followed vertical spout and removed, and the bottom surface of depression bar is equipped with the cutting knife. The guide sliding block moves in the vertical sliding groove and drives the pressing rod to move vertically, so that the falling track of the limiting cutting knife ensures that the falling point position of the cutting knife is reliable and stable, and the flatness of the dividing surface is improved when the sealing ring is cut.

Preferably, the lower end of the vertical sliding groove is communicated, an auxiliary pressing strip is arranged on the lower side of the guide sliding block, and the cross section of the auxiliary pressing strip is the same as the inner cross section of the sealing ring. Can be when the cutting knife cutting sealing washer through the direction slider, supplementary sealing washer that compresses tightly improves the stability when cutting apart the sealing washer.

Preferably, the upper end of the vertical sliding groove is provided with a sealing cover, and the upper side of the guide sliding block is provided with an extension spring connected with the sealing cover. Downward cutting of the cutting knife can be completed by pressing the pressing rod, and the upper side of the guide sliding block is connected with the extension spring, so that the extension spring can drive the cutting knife to reset rapidly, and the cutting efficiency is accelerated; and extension spring can hold the cutting knife, prevents that the direction slider from slipping in the vertical spout, improves the convenience that the cutting knife used.

Preferably, the vertical sliding grooves in the two adjacent pressing blocks are positioned on the opposite side surfaces of the two pressing blocks, the lower end of the sealing cover is provided with a lifting hook, and the upper end of the extension spring is provided with a fixing ring matched with the lifting hook. The extension spring and the sealing cover are convenient to disassemble and assemble, when a cutting knife is needed, the compression bar and the guide sliding block are integrated, and the guide sliding block can form a limit position after entering the two opposite vertical sliding grooves, so that the push rod is parallel to the upper side of the positioning block, and the cutting is convenient; when the sealing ring which is cut well needs to be bonded, the disassembly of the cutting knife can be completed only by taking out the fixing ring of the extension spring from the lifting hook, so that the sealing ring which is cut well is fixed by a tool to be clamped quickly, and the bonding forming of the sealing ring is completed.

A method for replacing a tool on the basis of the wind power main shaft sealing ring on site comprises the following steps:

A. cutting the whole sealing ring or cutting the sealing ring with the cut section being stained; placing a sealing ring to be processed into a positioning groove in a positioning block, closing pressing blocks at two ends of the positioning block, locking the pressing blocks by using a clamp, and cutting off the sealing ring by using a cutting knife to exert force downwards along a cutting groove of the positioning block;

B. sleeving the divided sealing ring into a main shaft of the wind turbine generator;

C. bonding the divided sealing rings; cleaning a cutting surface of a sealing ring by using a cleaning agent, uniformly coating adhesive on the cutting surface, quickly placing the cutting surface of the sealing ring into a positioning groove of a tool which is not provided with a cutting knife after butt joint, closing pressing blocks at two ends of a positioning block, locking the pressing blocks by using a clamp, uniformly heating the cutting surface, loosening the clamp after the adhesive is cured, and withdrawing the tool;

D. and mounting the bonded sealing ring on a required position on the main shaft.

The invention has the beneficial effects that:

(1) the cutting tool has a cutting function, the integral sealing ring or the sealing ring with a damaged split section and needing to be cut again can be fixed in the tool, the sealing ring is cut by a cutting knife along a cutting groove, and a cutting surface can be perpendicular to an axis of the sealing ring or form a certain angle with the axis of the sealing ring, so that the cutting surface is ensured to be flat.

(2) The two cutting surfaces can be accurately butted in the bonding process, the goodness of fit is high in the bonding process of the cutting surfaces, and the sealing performance of the replaced sealing ring is guaranteed.

(3) The sealing ring clamping device has the functions of quickly clamping, fixing and loosening the sealing ring, is convenient and quick, and reduces the labor intensity and the operation difficulty of workers.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the embodiment shown in fig. 1 in application.

Fig. 3 is a front view of the vertical chute of the present invention.

Fig. 4 is a schematic structural diagram of another embodiment of the present invention.

In the figure: positioning block 1 positioning groove 11 cutting groove 12 pressing block 2 pressing block 21 vertical sliding groove 22 sealing cover 23 lifting hook 231 clamp 3 hook 31 connecting block 311 fixing ring 32 switch rod 33 sealing ring 4 hinge 5 guiding sliding block 6 extension spring 61 auxiliary pressing bar 62 pressing bar 7 cutting knife 8.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.