KR200477965Y1 - Staor coil removing tool and staor coil inserting tool - Google Patents

Staor coil removing tool and staor coil inserting tool Download PDF

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Publication number
KR200477965Y1
KR200477965Y1 KR2020140003322U KR20140003322U KR200477965Y1 KR 200477965 Y1 KR200477965 Y1 KR 200477965Y1 KR 2020140003322 U KR2020140003322 U KR 2020140003322U KR 20140003322 U KR20140003322 U KR 20140003322U KR 200477965 Y1 KR200477965 Y1 KR 200477965Y1
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KR
South Korea
Prior art keywords
stator winding
stator
bar
tool
moving
Prior art date
Application number
KR2020140003322U
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Korean (ko)
Inventor
장덕준
유인규
Original Assignee
한전케이피에스 주식회사
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Priority to KR2020140003322U priority Critical patent/KR200477965Y1/en
Application granted granted Critical
Publication of KR200477965Y1 publication Critical patent/KR200477965Y1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/04—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool for drawing a stator winding and a tool for drawing a stator winding, and relates to a tool for drawing a stator winding and a tool for drawing a stator winding, which can achieve quality assurance and improvement in maintenance reliability in repairing a stator winding.
A tool for drawing a stator winding according to the present invention is characterized in that it comprises a support portion provided on both sides of a stator slot having an open shape and into which a stator winding is inserted and a U- And a movable bar movably installed on the closing part and having one side connected to the stator winding on the side of the supporting part of the body and the other side disposed on the outer side of the closing part, The stator winding is pulled toward the closing portion side.

Description

STAIR COIL REMOVING TOOL AND STAOR COIL INSERTING TOOL [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool for drawing a stator winding and a tool for drawing a stator winding, and relates to a tool for drawing a stator winding and a tool for drawing a stator winding, which can achieve quality assurance and improvement in maintenance reliability in repairing a stator winding.

The generator includes a stator having a cylindrical inner space that is generally fixed and a rotor rotating in the stator inner space. Electricity is induced in the stator winding included in the stator by the rotation of the rotor, and power generation occurs.

In a combined power plant where frequent start-up and shutdown is frequently observed, gaps are generated between generator stator windings and stator slots due to vibration and thermal expansion, and stator windings are inspected when corona discharge, dielectric breakdown, or ground fault occurs. And insulation reinforcement maintenance work.

In other words, if it is judged that the cause of the accident is caused by the failure of the stator winding, all the stator windings should be replaced or the insulation reinforcement work should be performed by removing only the grounding winding portion. However, in order to take out the damaged stator winding even in partial maintenance, the stator winding structure is stepped, and the surrounding winding is also drawn out.

Since the stator winding is resin-impregnated type, if the stator winding is artificially drawn and drawn by applying force to the stator winding in the stator slot, the mechanical deformation of the stator winding may occur and the damage of the stator winding may be enlarged It becomes a problem.
On the other hand, Japanese Unexamined Patent Application Publication No. 2011-155805, entitled " Method and Apparatus for Separating a Coil Conductor of a Rotating Electric Machine ", discloses a detailed description of such a stator winding drawing device and method.

Japanese Laid-Open Patent Publication No. 2011-155805

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to shorten the working time when the stator windings are drawn out and drawn, minimizing damage and deformation of the windings by artificially applied forces And to provide a tool for drawing a stator winding and a tool for drawing a stator winding that can achieve quality assurance and improved maintenance reliability in repairing the stator winding.

The tool for pulling out the stator winding according to the present invention is characterized in that it has a support portion provided on both sides of a stator slot having an open shape and inserted with a stator winding, and a U-shaped portion having a closed portion having a closed shape connecting end portions of the support portion. The stator winding is closed by the movement of the moving bar. The stator winding is closed by the movement of the moving bar. The stator winding is closed by the movement of the moving bar. And pulled to the negative side.

The tool for drawing the stator winding according to the present invention is characterized in that the tool is provided with an intermediate bar capable of adjusting the length in the longitudinal direction and a recessed recessed portion provided at one side of the intermediate bar for receiving the stator winding, And a supporting means provided on the other side of the intermediate bar and having protrusions protruding to be inserted between the second stator slots located on the other side of the stator internal space.

INDUSTRIAL APPLICABILITY The stator winding drawing tool and the stator winding drawing tool according to the present invention can shorten the working time when the stator winding is taken out and drawn, minimize damage and deformation of the winding due to artificially applied force, Accordingly, the quality of the stator windings can be secured and the maintenance reliability can be improved.

1 is a perspective view showing a stator winding drawing tool according to a first embodiment of the present invention.
2 is a front view showing a stator winding drawing tool according to a first embodiment of the present invention.
3 is a side view showing a stator winding drawing tool according to the first embodiment of the present invention.
4 is a perspective view showing a stator winding drawing tool according to the first embodiment of the present invention installed on a stator.
5 is a view showing a state in which the stator winding drawing tool according to the first embodiment of the present invention draws out the stator winding.
6 is a perspective view showing a stator winding drawing tool according to a second embodiment of the present invention.
7 is a front view showing a stator winding drawing tool according to a second embodiment of the present invention.
8 is a side view showing a stator winding drawing tool according to a second embodiment of the present invention.
9 is a cross-sectional view taken along line AA in Fig.
10 is a perspective view showing a state where a stator winding drawing tool according to a second embodiment of the present invention is installed on a stator.
11 is a view showing a state in which the stator winding drawing tool according to the second embodiment of the present invention draws the stator winding.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited or limited by the following examples.

Example  One

1 is a perspective view showing a stator winding drawing tool according to a first embodiment of the present invention. 2 is a front view showing a stator winding drawing tool according to a first embodiment of the present invention. 3 is a side view showing a stator winding drawing tool according to the first embodiment of the present invention.

First, a stator winding drawing tool according to a first embodiment of the present invention will be described with reference to Figs. 1 to 3. Fig.

The stator winding drawing tool according to the first embodiment of the present invention includes a body 110, a moving bar 130, and a nut 150.

The body 110 includes a supporting portion 111 and a closing portion 113, and has a C shape. The supporting portion 111 corresponds to the opening side portion in the U-shape, and the closing portion 113 corresponds to the closed side portion. The closing portion 113 has a closed shape connecting the end portion of the supporting portion 111. [

The movable bar 130 passes through the closing part 113 and is movably installed in the closing part 113. The movable bar 130 passes through the closing portion 113 through the through hole formed in the closing portion 113. [ The moving bar 130 is formed with threads on the outside. One side of the movable bar 130 is located on the support portion 111 side of the body 110 and the other side is located on the outer side of the closing portion 113.

The nut 150 has a thread corresponding to the thread of the moving bar 130 and can be screwed to the moving bar 130. The nut 150 is located outside the closing part 113 and engages with the moving bar 130.

There are two methods of moving the movable bar 130: one using the nut 150 and the other not using the nut 150. In the method of using the nut 150, the principle of converting the rotational motion of the nut 150 into the linear motion of the moving bar 130 is used. The nut 150 coupled to the movable bar 130 may be rotated and the movable bar 130 may be moved in the N direction or the S direction in accordance with the moving principle of the screw.

The movement bar 130 can be moved using the nut 150, but it is also possible to move the movement bar 130 without the nut 150. A thread corresponding to the thread of the moving bar 130 is formed on the inner surface of the through hole formed in the closing part 113 and then the moving bar 130 and the closing part 113 are screwed together to rotate the moving bar 130 The movable bar 130 can move in the N direction and the S direction.

However, when the nut 150 is used, since the nut 150 can be rotated using a spanner (not shown), the movement bar 130 can be more easily moved.

Meanwhile, the moving bar 130 may have an annular shape 131 at one end thereof. The annular shape 131 can serve as a ring to be connected to the stator winding 3.

4 is a perspective view showing a stator winding drawing tool according to the first embodiment of the present invention installed on a stator. 5 is a view showing a state in which the stator winding drawing tool according to the first embodiment of the present invention draws out the stator winding.

Hereinafter, a process of drawing the stator winding using the stator winding-out tool according to the first embodiment of the present invention will be described with reference to FIGS. 4 and 5. FIG.

Referring to FIG. 4, the inner space of the stator 1 is formed into a cylindrical shape. 4 shows a part in a cylindrical form. The dotted line schematically shows a part of the cylindrical shape of the stator 1. A stator winding 3 and an iron core block 5 are alternately arranged in the stator 1 in a row.

The stator slot 7 means a space in which the stator winding 3 enters between the iron core block 5 and the iron core block 5. The individual iron core blocks 5 are arranged at intervals in the D direction. The air hole 9 means a space between the iron core block 5 and the iron core block 5 arranged in the D direction.

Fig. 5 shows a side view of the stator winding drawing tool drawing the stator winding 3 in Fig. The supporting portions 111 of the stator winding drawing-out tool are provided on both sides of the stator slot 7. The supporting portion 111 holds the iron core block 5 on both sides to support the stator winding drawing tool.

One side of the movable bar (130) is connected to the stator winding (3). At this time, the wire (W) winding the stator winding (3) can be hooked on the annular shape (131) of the moving bar (130) to connect the moving bar (130) and the stator winding (3).

It is possible to tie the wire W to the stator winding 3 through the air hole 9 shown in Fig. The wire W can be previously wound on the stator winding 3 through the air hole 9 before the stator winding drawing operation is performed.

After the stator winding 3 is connected to the annular shape 131 of the moving bar 130, the nut 150 is rotated (R).

When the nut 150 is rotated in the R direction in a state where the nut 150 is screwed to the moving bar 130, if the closing part 113 is not provided, the nut 150 moves in the direction opposite to the N direction along the moving bar 130 . However, since the closing part 113 blocks the nut 150, the nut 150 rotates in place and the moving bar 130 moves in the N direction.

When the movable bar 130 moves in the N direction, the stator winding 3 is pulled toward the N-direction closing portion 113 side. In this way, the stator winding 3 can be drawn out from the stator 1.

When the stator winding 3 is drawn out by using the stator winding drawing tool according to the first embodiment of the present invention, the stator winding 3 is drawn out in an incremental manner using the principle of moving the screw, The mechanical deformation of the stator winding 3 can be prevented and damage to the winding can be prevented. Thereby securing the quality and improving the maintenance reliability in the maintenance of the stator winding (3).

Referring to FIG. 4, a plurality of stator winding drawing tools may be arranged in the D direction, and a plurality of stator winding drawing tools may be used to draw out the stator winding 3 at the same time. In this case, the mechanical deformation of the stator winding 3 can be further prevented, and the damage of the winding can be further minimized.

On the other hand, the body 110 of the stator winding drawing tool may be made of a ferromagnetic material. When the body 110 is made of a ferromagnetic material attached to a magnet, the body 110 can be attached to the iron core block 5 by the force of a magnet as shown in FIG. Since the body 110 is attached to the iron core block 5 even if a person does not hold it, the drawing operation of the stator winding 3 can be performed more easily.

Further, the body 110 may further include a protection member 115. The protection member 115 may be attached to one end of the support portion 111. [ The protective member 115 serves to protect the core block 5 and the stator winding 3.

The supporting portion 111 may be made of a metal so that scratches may be generated in the iron core block 5 or the stator winding 3 when the supporting portion 111 directly contacts the iron core block 5 or the stator winding 3 . The protective member 115 can prevent the occurrence of such scratches.

The protective member 115 may be a plastic material. Especially a Teflon material. In this case, the entire weight of the wire drawing tool can be lightened, and scratches that may occur in the stator winding 3 or the iron core block 5 can be effectively prevented.

Example  2

6 is a perspective view showing a stator winding drawing tool according to a second embodiment of the present invention. 7 is a front view showing a stator winding drawing tool according to a second embodiment of the present invention. 8 is a side view showing a stator winding drawing tool according to a second embodiment of the present invention. 9 is a cross-sectional view taken along the line A-A in Fig.

The tool for drawing the stator winding according to the second embodiment is a device for inserting the stator winding into the stator slots after fixing the stator winding drawn by the stator winding drawing tool according to the first embodiment.

For the sake of reference, the same (or significant) reference numerals are given to the same (or significant) parts as those of the above-described configuration, and a detailed description thereof will be omitted.

Hereinafter, a stator winding-in tool according to a second embodiment of the present invention will be described with reference to FIGS. 6 to 9. FIG.

The stator winding drawing tool according to the second embodiment of the present invention includes an intermediate bar 210, a drawing means 230, and a supporting means 250.

8 and 9, the middle bar 210 includes a first moving bar 215, a second moving bar 217, and a first moving bar 215 and a second moving bar 217 on both sides And includes a housing 213 to be inserted therein. The housing 213 has an inner hole 211 penetrating in the longitudinal direction. On the inner surface of the inner hole 211, a thread is formed.

One side C of the first moving bar 215 is connected to the inlet means 230. A connection here does not necessarily mean a direct connection. It includes all cases where it is connected through other objects. The other side B of the first movable bar 215 is connected to the housing 213. A thread is formed on the outer surface of the first movable bar 215. The first movable bar 215 is screwed to the housing 213 through the inner hole 211.

The second movable bar 217 has one side C connected to the housing 213. A thread is formed on the outer surface of the second movable bar 217. The second movable bar 217 is screwed to the housing 213 through the inner hole 211 in a similar manner as the first movable bar 215. The other side B of the second moving rod 217 is connected to the supporting means 250. A connection here does not necessarily mean a direct connection. It includes all cases where it is connected through other objects.

The first movable bar 215 and the housing 213 are screwed in the right screw direction and the second movable bar 217 and the housing 213 are engaged in the left screw direction, And the second moving rod 217 are screwed to the housing 213 in opposite directions. As a result, when the housing 213 rotates, the first moving bar 215 and the second moving bar 217 move in directions away from each other or close to each other. With this operating principle, the middle bar 210 of the tool for drawing the stator winding according to the second embodiment of the present invention can adjust its length in the longitudinal direction.

The entry means 230 provided at one side C of the intermediate bar 210 has a recessed recess 231. The receiving portion 231 serves to receive the stator winding 3. The receiving portion 231 may be made of a plastic material. Since the accommodating portion 231 directly contacts the stator winding 3, it can be made of a plastic material in order to prevent the stator winding 3 from being scratched during the operation.

The supporting means 250 provided on the other side B of the intermediate bar 210 has a protruding portion 251. The protrusion 251 may also be made of a plastic material. Since the projecting portion 251 is also a portion that can directly contact the iron core block 5 or the stator winding 3, in order to prevent scratches on the core block 5 or the stator winding 3, Can be produced.

10 is a perspective view showing a state where a stator winding drawing tool according to a second embodiment of the present invention is installed on a stator. 11 is a view showing a state in which the stator winding drawing tool according to the second embodiment of the present invention draws the stator winding.

Hereinafter, with reference to FIG. 10 and FIG. 11, a process of pulling the stator winding using the stator winding drawing tool according to the second embodiment of the present invention will be described.

Fig. 10 shows one stator winding drawing tool installed in a cylindrical internal space of the stator. In order to draw the stator winding (3) into the stator (1), a stator winding drawing tool is installed in the stator internal space.

However, only one stator winding inputting tool is not used for the stator winding 3 to be introduced. A plurality of stator winding receiving tools may be used. A plurality of stator winding drawing tools may be disposed in the direction of the arrow in Fig. 10 so that the stator winding 3 can be drawn into the stator 1 at the same time. In this case, the mechanical deformation of the stator winding 3 can be further prevented, and the damage of the winding can be further minimized.

Fig. 11 is a side view of Fig. 10 showing a situation in which the stator winding drawing tool draws the stator winding 3. Fig. Referring to FIG. 11, protrusions 251 of the support means 250 are inserted between the second stator slots 27 located on the other side of the stator internal space 11. Both side portions of the protrusion 251 contact with the iron core block 5 and receive a supporting force from the iron core block 5.

By inserting the protrusion 251 between the second stator slots 27, it is possible to prevent the stator winding receiving tool itself from shaking. In this way, the support means 250 can support the tool for drawing the stator winding.

The lead-in means 230 may serve to push the stator winding 3 between the first stator slots 17 located at one side of the stator internal space 11. [ The accommodating portion 231 accommodates the stator winding 3 and is capable of smoothing the stator winding 3.

11, the supporting means 250 is supported on the other side of the stator internal space 11 and the stator winding 3 is accommodated by the lead-in means 230. In this state, the intermediate bar 210 is rotated (L The first moving bar 215 and the second moving bar 217 try to move in directions away from each other. At this time, since the support means 250 is supported at the other side of the stator internal space 11, the intermediate bar 210 and the lead-in means 230 move in the S direction.

When the lead-in means 230 moves in the S direction, the stator winding 3 is pushed into the first stator slot 17. In this way, the fixed stator winding 3 can be drawn into its original position in the stator 1.

The use of the stator winding drawing tool according to the second embodiment of the present invention can shorten the working time when the stator winding 3 is drawn in and minimizes the damage and deformation of the winding due to the artificially applied force , Thereby securing the quality and improving the reliability of the maintenance in repairing the stator winding (3).

1: stator
3: stator winding
5: iron core block
7: Stator slot
9: Air hole
11: Space inside the stator
17: first stator slot
27: second stator slot
110: Body
111: Support
113: Closure part
115: protective member
130: Moving bar
131: Ring shape
150: Nut
210: Middle bar
211: inner hole
213: Housing
215: first movable bar
217: second movable bar
230: incoming means
231:
250: Support means
251:
W: Wire

Claims (10)

A U-shaped body having a support portion provided on both sides of a stator slot having an opened shape and into which a stator winding is inserted, and a closing portion having a closed shape connecting the ends of the support portions; And
And a movable bar movably installed on the closing part and having one side connected to the stator winding on the side of the supporting part of the body and the other side disposed on the outer side of the closing part,
The stator winding is pulled toward the closing portion by the movement of the moving bar,
Further comprising: a nut located outside of the closing portion and screwed to the moving bar,
Wherein the moving bar moves as the nut rotates. ≪ RTI ID = 0.0 > 21. < / RTI > The method according to claim 1,
The moving bar has a ring shape at one end thereof,
Wherein the stator winding is connected to the annular shape through a wire and pulled to the closed portion side. delete The method according to claim 1,
Wherein the body further comprises a protection member attached to one end of the support portion. The method of claim 4,
Wherein the protective member is made of a Teflon material. The method according to claim 1,
Wherein the body is made of a ferromagnetic material. An intermediate bar longitudinally adjustable in length;
An inlet means provided at one side of the intermediate bar and having a recessed recessed portion accommodating the stator winding to draw the stator winding through the first stator slots located at one side of the stator internal space; And
And support means provided on the other side of the intermediate bar and having protrusions protruding to be inserted between the second stator slots located on the other side of the stator internal space,
And the protruding portion protrudes from a central portion of the supporting means. The method of claim 7,
The middle bar including a housing having an inner hole penetrating in the longitudinal direction;
A first moving rod, one side of which is connected to the receiving means and the other side of which is screwed with the housing through the inner hole; And
And a second moving rod, one side of which is screwed with the housing through the inner hole and the other side of which is connected to the supporting means,
Wherein when the housing rotates, the first moving rod and the second moving rod move in directions away from each other or in a direction approaching each other. The method of claim 7,
Wherein the receiving portion is made of a plastic material. The method of claim 7,
Wherein the protrusion is made of a plastic material.
KR2020140003322U 2014-04-25 2014-04-25 Staor coil removing tool and staor coil inserting tool KR200477965Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2020140003322U KR200477965Y1 (en) 2014-04-25 2014-04-25 Staor coil removing tool and staor coil inserting tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2020140003322U KR200477965Y1 (en) 2014-04-25 2014-04-25 Staor coil removing tool and staor coil inserting tool

Publications (1)

Publication Number Publication Date
KR200477965Y1 true KR200477965Y1 (en) 2015-08-10

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KR2020140003322U KR200477965Y1 (en) 2014-04-25 2014-04-25 Staor coil removing tool and staor coil inserting tool

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100841963B1 (en) * 2007-01-19 2008-06-27 두산중공업 주식회사 Fastener for preventing welding distortion of key bar for generator
JP2011155805A (en) * 2010-01-28 2011-08-11 Mitsubishi Electric Corp Method and device for detaching winding conductor of rotary electric machine
KR101318155B1 (en) 2013-08-14 2013-10-16 주식회사 야호텍 Apparatus for extracting coil for winding coil of blush less direct current motor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100841963B1 (en) * 2007-01-19 2008-06-27 두산중공업 주식회사 Fastener for preventing welding distortion of key bar for generator
JP2011155805A (en) * 2010-01-28 2011-08-11 Mitsubishi Electric Corp Method and device for detaching winding conductor of rotary electric machine
KR101318155B1 (en) 2013-08-14 2013-10-16 주식회사 야호텍 Apparatus for extracting coil for winding coil of blush less direct current motor

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