CN214755988U - Special tool for turning over main pump motor rotor of CANDU unit - Google Patents

Abstract

The utility model discloses a specialized tool that is used for CANDU unit main pump electric motor rotor to stand up, including standing up frock, Half board and fixing bolt, fixing bolt fixes the Half board on standing up the frock. The turnover tool is a bearing part and is a special-shaped steel member, the whole thickness of the steel member is 70mm, and the middle part of the steel member is of a circular structure. The inner side of the turnover tool is embedded with a ring-shaped copper sleeve with the thickness of 8 mm. The copper sheathing inboard have the chamfer, evenly distributed 8 threaded bolt holes in diameter 260mm department. The Half board be anti-skidding fixed part, for the deformed steel member, the whole thickness of steel member is 18.5mm, comprises two semicircle annular plates, 8 through-holes of evenly distributed in diameter 260mm department. The beneficial effects of the utility model reside in that: the hoisting risk is large when the rotor of the main pump motor of the CANDU unit is turned over, and the problem that mechanical damage to components such as a rotor winding, a slot wedge and a fan is easily caused is solved.

Description

Special tool for turning over main pump motor rotor of CANDU unit

Technical Field

The utility model belongs to a specialized tool, concretely relates to specialized tool that is used for CANDU unit main pump electric motor rotor to stand up.

Background

The main pump motor of the existing CANDU unit is a high-pressure vertical motor, when the motor is disassembled for maintenance, the rotor needs to be horizontally drawn out from a stator bore and placed on a special support piece, then the stator and the rotor are maintained, and after the maintenance is finished, the rotor needs to be erected from the horizontal position and vertically penetrates back into the stator bore.

The rotor of a main pump motor of a Qinshan CANDU unit has the dead weight of 11 tons, a special lifting point is arranged at a non-driving end, a lifting appliance fixing point is not arranged at the driving end, at present, only a lifting belt is wound on the inner side of a cooling fan at the non-driving end, and two cranes are matched to turn over the rotor. Because rotor weight is big, and the non-drive end suspender can't be fixed totally, has the risk such as the fall of skidding, and there are a plurality of windings, slot wedge in the rotor periphery, when the rotor stands up, if take place to skid, will cause the mechanical damage of parts such as winding, slot wedge, fan.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a specialized tool for CANDU unit main pump electric motor rotor stands up, when it can solve CANDU unit main pump electric motor rotor and stand up, the hoist and mount risk is big, causes the problem of part mechanical damage such as rotor winding, slot wedge, fan easily.

The technical scheme of the utility model as follows: a special tool for turning over a main pump motor rotor of a CANDU unit comprises a turning-over tool, a Half plate and a fixing bolt, wherein the fixing bolt fixes the Half plate on the turning-over tool.

The turnover tool is a bearing part and is a special-shaped steel member, the whole thickness of the steel member is 70mm, and the middle part of the steel member is of a circular structure.

The inner side of the turnover tool is embedded with a ring-shaped copper sleeve with the thickness of 8 mm.

The copper sheathing inboard have the chamfer, evenly distributed 8 threaded bolt holes in diameter 260mm department.

The Half board be anti-skidding fixed part, for the deformed steel member, the whole thickness of steel member is 18.5mm, comprises two semicircle annular plates, 8 through-holes of evenly distributed in diameter 260mm department.

And circular copper plates are embedded on two sides of the Half plate.

The inner diameter size of the Half plate is matched with the outer diameter size of the vertical motor non-drive end annular key groove, and the thickness of the Half plate is matched with the width of the vertical motor non-drive end annular key groove.

The beneficial effects of the utility model reside in that: the hoisting risk is large when the rotor of the main pump motor of the CANDU unit is turned over, and the problem that mechanical damage to components such as a rotor winding, a slot wedge and a fan is easily caused is solved.

Drawings

Fig. 1 is a schematic view of a special tool for turning over a rotor of a main pump motor of a CANDU unit provided by the utility model;

FIG. 2 is a front view of the turning tool;

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is a front view of a Half plate;

fig. 5 is a left side view of fig. 4.

In the figure, 1 a turnover tool, 2 a Half plate, 3 bolts, 4 rotor shaft outlet ends, 5 copper sleeves and 6 copper plates.

Detailed Description

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

As shown in figure 1, the special tool for turning over a main pump motor rotor of a CANDU unit comprises a turning-over tool 1, a Half plate 2 and a fixing bolt 3, wherein the fixing bolt 3 fixes the Half plate 2 on the turning-over tool 1.

As shown in fig. 2 and 3, it is the bearing part to turn over frock 1, for heterotypic steel member, the whole thickness of steel member is 70mm, the centre is ring shape (external diameter 360mm, internal diameter 210.5mm) structure, inboard inlay ring shape copper sheathing 5 that has 8mm thick, carry out the chamfer (R ═ 3mm) to 5 inboards of copper sheathing, locate 8 the bolt holes that the degree of depth is 30mm threaded (M10) at diameter 260mm, be two dysmorphism lugs about, for preventing that the rotor from turning over in-process damage suspender, the chamfer (R ═ 30mm, 20mm, 25mm, 5mm) is all carried out to dysmorphism lug both sides. The size of the inner diameter of the turnover tool 1 is matched with the size of a rotor shaft neck above a ring key groove at the non-driving end of the vertical motor, and a copper sleeve embedded on the inner side is a protective pad to prevent the turnover tool from damaging the rotor shaft neck under the condition of bearing.

As shown in fig. 4 and 5, the Half board 2 is the antiskid fixed part, and for the deformed steel member, the whole thickness of steel member is 18.5mm, comprises two semicircle annular (internal diameter 190mm, external diameter 300mm) boards, locates evenly distributed 8 diameters at diameter 260mm and is 12 mm's through-hole, and the copper 6 of ring shape (external diameter 220mm, internal diameter 190 mm) is all inlayed to the Half board both sides. The inner diameter size of the Half plate is matched with the outer diameter size of the vertical motor non-drive end annular key groove, the thickness of the Half plate is matched with the width of the vertical motor non-drive end annular key groove, and the copper sleeves embedded on the two sides of the Half plate are protection pads to prevent the Half plate from damaging the annular key groove in the rotor turnover process.

For the fit installation, 8 fixing bolts (M10 × 50mm) and a gasket, a spring pad and the like which are matched with the fixing bolts are also included.

The utility model discloses the during operation at first will stand up the frock and penetrate to the annular key keyway top from the non-drive end of rotor, then install two semicircle annular Half-ring shape Half boards to rotor annular key keyway in, the adjustment direction ensures that the phi 12 bolt hole of Half board aligns with the M10 of standing up the frock 30mm bolt hole, uses 8M 10 50mm bolts at last, penetrates the phi 12 bolt hole of Half board respectively to twist the M10 of standing up the frock 30mm bolt hole. When the vertical motor rotor is turned over, the non-driving end uses an annular sling with 2 t and 5m, one end of the sling is respectively tied on the left and right special-shaped lifting lugs of the turning-over tool, and the other end of the sling is tied on a lifting hook of a crane and is matched with a lifting appliance at the driving end of the rotor to execute the turning-over work of the rotor.

This utility model's beneficial technological effect is: the Half board is clamped in a key groove of a ring key of a main pump motor of a Chandu mountain CANDU, and the turnover tool is integrally connected with the Half board through bolts, so that when a rotor is turned over, the side slipping of the turnover tool in the axial direction of the rotor can be effectively avoided, and the mechanical damage of components such as a rotor winding, a slot wedge and a fan is avoided. Meanwhile, copper bars are embedded on the inner surface of the turnover tool, and copper bars are embedded on two sides of the Half plate, so that the shaft neck and the key groove of the driving end of the main pump motor rotor can be effectively protected from being damaged. The utility model discloses use safe and reliable, do not influence work piece quality, simple structure, maneuverability is strong.

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 1-5, the turning tool special for the main pump motor rotor of the Qinshan CANDU unit comprises a turning tool, a Half plate and a fixing bolt. The inner diameter of the turnover tool is matched with the outer diameter of a shaft neck above a ring key of the rotor, and the turnover tool penetrates into the upper portion of a key groove of the ring key from a non-driving end of the rotor during working. The inner diameter of the Half plate is matched with the outer diameter of the rotor ring key groove, the thickness of the Half plate is matched with the width of the ring key groove, two semicircular ring-shaped Half plates are installed in the rotor ring key groove during working, and the adjustment direction ensures that a phi 12 bolt hole of the Half plate is aligned with a M10 x 30mm bolt hole of the turnover tool. The fixing bolts are 8M 10 x 50mm bolts, the bolt threads are matched with the bolt holes M10 x 30mm of the turnover tool, and during work, the fixing bolts penetrate into phi 12 bolt holes of the Half plate respectively and are screwed into M10 x 30mm bolt holes of the turnover tool. When the vertical motor rotor is turned over, the non-driving end uses an annular sling with 2 t and 5m, one end of the sling is respectively tied on the left and right special-shaped lifting lugs of the turning-over tool, and the other end of the sling is tied on a lifting hook of a crane and is matched with a lifting appliance at the driving end of the rotor to execute the turning-over work of the rotor.

Claims (3)

1. The utility model provides a specialized tool that is used for CANDU unit main pump motor rotor to stand up which characterized in that: the turnover fixture comprises a turnover fixture, a Half plate and a fixing bolt, wherein the fixing bolt fixes the Half plate on the turnover fixture;

the turnover tool is a bearing part and is a special-shaped steel member, the whole thickness of the steel member is 70mm, and the middle part of the steel member is of a circular structure;

a ring-shaped copper sleeve with the thickness of 8mm is embedded in the inner side of the turnover tool;

the inner side of the copper sleeve is provided with a chamfer, and 8 threaded bolt holes are uniformly distributed at the position with the diameter of 260 mm;

the Half board be anti-skidding fixed part, for the deformed steel member, the whole thickness of steel member is 18.5mm, comprises two semicircle annular plates, 8 through-holes of evenly distributed in diameter 260mm department.

2. The special tool for turning over the rotor of the main pump motor of the CANDU unit as claimed in claim 1, wherein: and circular copper plates are embedded on two sides of the Half plate.

3. The special tool for turning over the rotor of the main pump motor of the CANDU unit as claimed in claim 1, wherein: the inner diameter size of the Half plate is matched with the outer diameter size of the vertical motor non-drive end annular key groove, and the thickness of the Half plate is matched with the width of the vertical motor non-drive end annular key groove.

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