CN216098676U - Device for dismounting shaft head bearing in guide vane of bulb through-flow type water turbine generator set - Google Patents

Abstract

The utility model relates to a device for removing a shaft head bearing in a guide vane of a bulb through-flow type hydroelectric generating set, which comprises an inner cone, an outer cone sleeve and a screw rod, wherein an inner screw hole coaxially penetrating through the inner cone is formed in the inner cone, the outer cone sleeve comprises at least two petal sleeves which are mutually and circumferentially spliced, the inner surfaces of the petal sleeves are conical surfaces which are matched with the surface of the inner cone and have circular arc-shaped sections, the petal sleeves are wound on the outer surface of the inner cone at intervals and are clamped with the inner cone, the inner surfaces of the petal sleeves are attached to the inner cone, a protruding lifting part is arranged on the periphery of one end, corresponding to the large end of the inner cone, of each petal sleeve, and the screw rod is detachably sleeved in the inner screw hole of the inner cone in a penetrating mode and is in threaded connection with each other. The advantages are that: the integrity of the tool and the inner bearing can be guaranteed while the inner bearing is detached, the safety of the maintenance operation of the inner bearing of the guide vane is guaranteed practically, and the maintenance efficiency is improved.

Description

Device for dismounting shaft head bearing in guide vane of bulb through-flow type water turbine generator set

Technical Field

The utility model relates to the field of hydropower station mechanical engineering, in particular to a dismounting device for a guide vane inner spindle head bearing of a bulb through-flow type water turbine generator set.

Background

The guide vane is an important execution component of the bulb tubular turbine generator set water guide mechanism, and the starting and stopping of the generator set and the load regulation of the generator set are realized. Therefore, the requirements on the end face and vertical face sealing performance of the guide vane are high, the guide vane supporting part is divided into an outer bearing and an inner bearing, and the sealing effect of the guide vane is determined by the performance of the guide vane supporting part. In the maintenance operation in the past, discovery stator inner bearing is because the invasion bubble of water, and corrosion, corruption are serious, and the inner bearing is demolishd and is needed great moment, and makes multiplexer utensil atress area little in the past, and the atress is uneven, and easily makes multiplexer utensil and stator inner bearing damage, and traditional mode can't be demolishd stator inner bearing.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a device for removing a shaft head bearing in a guide vane of a bulb through-flow type water turbine generator set, and effectively overcoming the defects in the prior art.

The technical scheme for solving the technical problems is as follows:

the utility model provides a device that demolishs of axle head bearing in bulb through-flow type hydroelectric set stator, including interior cone, outer taper sleeve and screw rod, be equipped with the coaxial interior screw hole that runs through it in the above-mentioned inner cone, above-mentioned outer taper sleeve includes at least two lamella covers of mutual circumference concatenation, the internal surface of above-mentioned lamella cover all is established to the conical surface that is convex with the surface phase-match and the cross-section of above-mentioned inner cone, above-mentioned lamella cover interval encircles at above-mentioned inner cone surface, and with above-mentioned inner cone block, and the internal surface of above-mentioned lamella cover and the laminating of above-mentioned inner cone, the one end periphery that above-mentioned lamella cover corresponds the major part of above-mentioned inner cone is equipped with outstanding portion of pulling, above-mentioned screw rod detachable wears to overlap in the interior screw hole of above-mentioned inner cone, and threaded connection each other.

On the basis of the technical scheme, the utility model can be further improved as follows.

Furthermore, the number of the petals is two.

The inner cone comprises an inner cone body and a small end, the small end of the inner cone body is provided with a positioning portion with external threads in an integrated mode, the inner thread hole penetrates through the positioning portion, the locking nut is detachably connected to the outside of the positioning portion in a threaded mode, a step ring groove is formed between the positioning portion and the small end of the inner cone body, and a retaining ring matched with the step ring groove in a clamping mode is arranged on the inner side of one end, corresponding to the small end of the inner cone body, of the valve sleeve.

Further, the pulling part is a fan-shaped ring structure which is coaxial with the valve sleeve.

The utility model has the beneficial effects that: the integrity of the tool and the inner bearing can be guaranteed while the inner bearing is detached, the safety of the maintenance operation of the inner bearing of the guide vane is guaranteed practically, and the maintenance efficiency is improved.

Drawings

Fig. 1 is a structural sectional view of a dismounting device of a shaft head bearing in a guide vane of a bulb through-flow type water turbine generator set during dismounting operation.

In the drawings, the components represented by the respective reference numerals are listed below:

1. an inner cone; 2. an outer taper sleeve; 3. a screw; 4. locking the nut; 11. a positioning part; 12. a step ring groove; 21. a valve sleeve; 211. a pulling section; 212. a retaining ring.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.

Example (b): as shown in fig. 1, the device for removing the axial head bearing in the guide vane of the bulb through-flow type water turbine generator set according to the present embodiment includes an inner cone 1, an outer cone sleeve 2 and a screw rod 3, wherein an inner hole coaxially penetrating through the inner cone 1 is formed in the inner cone 1, the outer cone sleeve 2 includes at least two petal sleeves 21 which are mutually circumferentially spliced, inner surfaces of the petal sleeves 21 are tapered surfaces which are matched with a surface of the inner cone 1 and have circular arc-shaped cross sections, the petal sleeves 21 are wound around an outer surface of the inner cone 1 at intervals and are clamped with the inner cone 1, an inner surface of the petal sleeves 21 is attached to the inner cone 1, a protruding lifting portion 211 is formed on an outer periphery of one end of the petal sleeve 21 corresponding to a large end of the inner cone 1, and the screw rod 3 is detachably inserted into the inner hole of the inner cone 1 and is connected to each other by a screw thread.

The dismantling process is as follows:

after a guide vane inner pivot bolt and an inner pivot of the bulb through-flow type water turbine generator set are removed, a small head of an inner cone 1 is installed in an inner bearing outwards, an outer cone sleeve 2 is installed between the inner cone 1 and the guide vane inner bearing in a split mode (specifically, the outer cone 1 is respectively wrapped by flap sleeves 21 and clamped with each other), after the outer cone sleeve 2 is assembled, a lifting part 211 of the outer cone sleeve 2 is reversely buckled at the inner end of the guide vane inner bearing (a in the figure), finally a screw rod 3 is screwed into the inner cone 1, the screw rod 3 is in contact with the inner end face of the guide vane to bear force along with the screwing of the screw rod 3, then the inner cone 1 and the outer cone sleeve 2 move outwards along the screw rod 3, the force can be transmitted to the guide vane inner bearing through the lifting part 211, so that the inner bearing is ejected out, the whole design greatly protects the inner bearing from being damaged during operation, and improves the safety and the maintenance efficiency, and provides related thinking guidance for the maintenance operation of the guide vane inner bearing of other hydroelectric generating set models.

In this embodiment, there are two valve sleeves 21, and in operation, the two valve sleeves 21 are wrapped on two sides of the outer portion of the inner cone 1, and the ends of the two valve sleeves 21 can be attached or close to each other.

As a preferable embodiment, the locking device further comprises a locking nut 4, a positioning portion 11 with an external thread is coaxially arranged at the small end of the inner cone 1, the internal thread penetrates through the positioning portion 11, the locking nut 4 is detachably screwed outside the positioning portion 11, a step ring groove 12 is formed between the positioning portion 11 and the small end of the inner cone 1, and a retaining ring 212 in snap fit with the step ring groove 12 is arranged at the inner side of one end of the petal sleeve 21 corresponding to the small end of the inner cone 1.

In the scheme, the locking nut 4 is designed to enable the inner cone 1 and the screw rod 3 to be assembled more tightly, and meanwhile, the valve sleeve 21 of the outer cone sleeve 2 can be limited not to jump in the operation process.

In this embodiment, the pulling portion 211 is a fan-shaped ring structure coaxially disposed with the valve sleeve 21, and has a large contact area when contacting with the inner bearing of the guide vane, so that the pressure is better.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (4)

1. The utility model provides a device that demolishs of axle head bearing in bulb through-flow hydroelectric set stator which characterized in that: the inner cone comprises an inner cone body (1), an outer cone sleeve (2) and a screw rod (3), wherein an inner threaded hole which coaxially penetrates through the inner cone body (1) is formed in the inner cone body (1), the outer cone sleeve (2) comprises at least two petal sleeves (21) which are mutually spliced in the circumferential direction, the inner surfaces of the petal sleeves (21) are conical surfaces which are matched with the surface of the inner cone body (1) and have circular arc-shaped sections, the petal sleeves (21) are wound on the outer surface of the inner cone body (1) at intervals and are clamped with the inner cone body (1), the inner surfaces of the petal sleeves (21) are attached to the inner cone body (1), one end of each petal sleeve (21), corresponding to the large end of the inner cone body (1), is provided with a protruding lifting portion (211) in the periphery, and the screw rod (3) is detachably sleeved in the inner threaded hole of the inner cone body (1) in a penetrating mode and is connected with each other in a threaded mode.

2. The device for removing the shaft head bearing in the guide vane of the bulb through-flow type water turbine generator set according to claim 1, is characterized in that: the number of the valve sleeves (21) is two.

3. The device for removing the shaft head bearing in the guide vane of the bulb through-flow type water turbine generator set according to claim 1, is characterized in that: still include lock nut (4), the microcephaly of inner cone (1) end integrated into one piece's coaxial location portion (11) that is equipped with the external screw thread, interior screw hole runs through location portion (11), lock nut (4) detachable threaded connection is in outside location portion (11), location portion (11) with form step annular groove (12) between the microcephaly end tip of inner cone (1), lamella cover (21) correspond the one end inboard of inner cone (1) microcephaly be equipped with step annular groove (12) joint complex buckle (212).

4. The device for removing the shaft head bearing in the guide vane of the bulb through-flow type water turbine generator set according to any one of claims 1 to 3, wherein the device comprises: the lifting part (211) is of a fan-shaped annular structure which is coaxial with the valve sleeve (21).

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