CN217508513U

CN217508513U - Radial pressing device for generator stator winding

Info

Publication number: CN217508513U
Application number: CN202123291132.9U
Authority: CN
Inventors: 高亢; 何琳; 曹逸; 唐新文; 徐力明; 刘春奇
Original assignee: Huanghe Water Resources And Hydropower Development Group Co ltd
Current assignee: Huanghe Water Resources And Hydropower Development Group Co ltd
Priority date: 2021-12-25
Filing date: 2021-12-25
Publication date: 2022-09-27
Anticipated expiration: 2031-12-25

Abstract

A generator stator winding radial compression device, comprising: the positioning block is horizontally arranged in the inverted concave plate, the cross section of the positioning block is trapezoidal, the long edge of the positioning block faces upwards, two limiting rods are vertically arranged at the upper end of the positioning block relatively, and the limiting rods penetrate through the upper end of the inverted concave plate in a sliding mode; the first pressing plate is horizontally arranged at the lower end of the positioning block, two guide rods are vertically arranged at the upper end of the positioning block relatively, and the guide rods penetrate through the first pressing plate in a sliding mode; the screw rod runs through the inverted concave plate and the positioning block in sequence along the vertical direction, and the lower end of the screw rod is rotatably connected with the upper end of the first pressing plate. The utility model discloses simple structure, workman intensity of labour is little, and work efficiency is high, can stator winding be compressing tightly the in-process atress even, avoids the winding insulation damaged.

Description

Radial compressing device for generator stator winding

Technical Field

The utility model discloses stator winding installation technical field, in particular to radial closing device of generator stator winding.

Background

The stator winding is composed of a plurality of strands of copper wires and main insulation, and two ends of each wire rod are provided with connecting joints. The insulating material of the stator winding of the generator in the F-level insulating double-layer wave winding form is an epoxy mica tape which has good flexibility under normal conditions, has good electrical and mechanical strength after being processed and formed by winding coils, and is easy to break after being stressed.

Stator winding radially gets into behind stator core's the mounting groove with mounting groove in close contact with, at present, most directly utilize the instrument to carry out the striking to stator winding and compress tightly, workman intensity of labour is big, work efficiency is low to stator winding is very easily because of receiving inhomogeneous stress to lead to the winding insulation damaged, and the repair work of damaged winding needs a large amount of manpower and materials, can produce great cost.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the prior art, the utility model provides a radial closing device of generator stator winding, simple structure, convenient operation, workman intensity of labour is little, and work efficiency is high, can make stator winding evenly compressing tightly the in-process atress, avoids the winding insulation damaged.

The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be: a generator stator winding radial compression device, comprising: an inverted concave plate;

the positioning block is horizontally arranged in the inverted concave plate, the cross section of the positioning block is trapezoidal, two limiting rods are arranged on the long side of the positioning block upwards and the upper end of the positioning block vertically, the length of the short side of the positioning block is larger than the width of the stator core mounting groove, and the limiting rods penetrate through the upper end of the inverted concave plate in a sliding mode;

the first pressing plate is horizontally arranged at the lower end of the positioning block, two guide rods are vertically arranged at the upper end of the positioning block relatively, and the guide rods penetrate through the first pressing plate in a sliding mode;

the screw rod runs through the inverted concave plate and the positioning block in sequence along the vertical direction, is in threaded connection with the inverted concave plate and is not in contact with the positioning block, and the lower end of the screw rod is rotatably connected with the upper end of the first pressing plate. The beneficial effects are that: offset through locating piece left and right sides and mounting groove notch right-angle side, make the center of undercut plate and the center coincidence of mounting groove, first pressure strip is after getting into the mounting groove promptly, the distance of first pressure strip left and right sides to the mounting groove side equals, the effect of centering has been played, also make the screw rod drive first pressure strip downstream make even atress, thereby make first pressure strip compress tightly stator winding, the guide bar has played the effect of vertical direction, the straightness that hangs down of first pressure strip downstream has been guaranteed, even atress has further been guaranteed.

Furthermore, a second pressing plate is horizontally arranged below the first pressing plate, the first pressing plate and the second pressing plate are connected through a plurality of first springs, and the width of the first pressing plate and the width of the second pressing plate are smaller than that of the mounting groove. The beneficial effects are that: the pressure of the first pressure plate is transmitted to the stator winding through the first spring and the second pressure plate, and the stress of the stator winding is further uniform.

Furthermore, the upper end center of the inverted concave plate is provided with a T-shaped threaded sleeve in a penetrating mode, the threaded sleeve and the inverted concave plate are detachably and fixedly connected, and the threaded sleeve is in threaded fit with the screw rod.

Further, the upper end of the screw rod is provided with a rotating handle which is L-shaped. The beneficial effects are that: the screw rod can be rapidly rotated by rotating the handle, so that the labor intensity of workers is reduced, and the working efficiency is improved.

Furthermore, the upper end of the limiting rod is provided with a horizontal rod which is in an inverted L shape, the horizontal rod is fixedly connected with the limiting rod, and the lower end of the limiting rod is detachably and fixedly connected with the positioning block.

Furthermore, a second spring is sleeved on the outer wall of the limiting rod and located between the inverted concave plate and the positioning block.

Furthermore, a plurality of manual permanent magnetic chucks which are parallel and level with the bottom of the inverted concave plate are respectively arranged on the left side and the right side of the inverted concave plate. The beneficial effects are that: the manual permanent magnetic chuck is convenient to disassemble and fix, and the working efficiency is improved.

Furthermore, a rotating button used for controlling whether the manual permanent magnet sucker is magnetic or not is arranged on the manual permanent magnet sucker.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view from a in fig. 1.

The labels in the figure are: 1. the stator core, 101, the mounting groove, 2, stator winding, 3, the second pressure strip, 4, first spring, 5, first pressure strip, 6, the locating piece, 7, manual permanent magnetism sucking disc, 8, the second spring, 9, the gag lever post, 10, the horizon bar, 11, the screw rod, 12, twist grip, 13, the thread bush, 14, the guide bar, 15, the board of falling concave.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that in the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

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

Referring to fig. 1-2, the present invention provides a radial pressing device for a stator winding of a generator, including: the stator core assembly comprises an inverted concave plate 15, a positioning block 6, a first pressing plate 5 and a screw rod 11, wherein the positioning block 6 is horizontally arranged in the inverted concave plate 15, the cross section of the positioning block 6 is trapezoidal, two limiting rods 9 are arranged on the long side of the positioning block 6 upwards and the upper end of the positioning block relatively vertically, the length of the short side of the positioning block 6 is larger than the width of a mounting groove 101 of a stator core 1, and the limiting rods 9 penetrate through the upper end of the inverted concave plate 15 in a sliding mode; the first pressing plate 5 is horizontally arranged at the lower end of the positioning block 6, two guide rods 14 are vertically arranged at the upper end of the positioning block, and the guide rods 14 penetrate through the first pressing plate 5 in a sliding mode; the screw rod 11 sequentially penetrates through the inverted-concave plate 15 and the positioning block 6 in the vertical direction, the screw rod 11 is in threaded connection with the inverted-concave plate 15 and is not in contact with the positioning block 6, and the lower end of the screw rod 11 is rotatably connected with the upper end of the first pressing plate 5.

The positioning block 6 is provided with a through hole for the screw rod 11 to pass through, and the diameter of the through hole is larger than the outer diameter of the screw rod 11.

Specifically, the upper end center of the board of falling the concave plate 15 runs through and is equipped with the thread bush 13 that is T shape, thread bush 13 and the board of falling the concave plate 15 are for dismantling fixed connection,

thread bush

13 and 11 screw-thread fits of screw rod, 11 upper ends of screw rod are equipped with twist grip 12, twist grip 12 is L shape, but through twist grip 12 fast rotation screw rod 11, has reduced workman's intensity of labour, has improved work efficiency.

Wherein, 9 upper ends of gag lever post are equipped with rather than being the horizon bar 10 of falling L shape,

horizon bar

10 and 9 fixed connection of gag lever post, and fixed connection can be dismantled with locating piece 6 to the 9 lower extremes of gag lever post, the cover is equipped with second spring 8 on the gag lever post 9 outer wall, second spring 8 is located between the shape of falling the concave plate 15 and the locating piece 6, and second spring 8 upper and lower both ends offset with the shape of falling the concave plate 15 and locating piece 6 respectively, under the effect of second spring 8 elasticity, make locating piece 6 contact with mounting groove 101 notch right angle limit fast, realize quick centering, have improved work efficiency.

In addition, the inverted concave plate 15 includes two side plates disposed vertically opposite to each other and a support plate disposed at the upper ends of the side plates, and the two side plates and the support plate are formed in an inverted concave shape.

Of course, the present invention is not limited to the above-described embodiments, and several other embodiments based on the design concept of the present invention are provided below.

For example, in other embodiments, different from the above-described embodiments, as shown in fig. 1 and fig. 2, a second pressing plate 3 is horizontally disposed below the first pressing plate 5, the first pressing plate 5 and the second pressing plate 3 are connected by a plurality of first springs 4, the widths of the first pressing plate 5 and the second pressing plate 3 are both smaller than the width of the mounting groove 101, and the pressure of the first pressing plate 5 is transmitted to the stator winding 2 through the first springs 4 and the second pressing plate 3, so that the stator winding 2 is stressed more uniformly.

Specifically, both ends about first spring 4 respectively with first pressure strip 5 and 3 fixed connection of second pressure strip, be equipped with two guiding axles on the first pressure strip 5 relatively, a plurality of first springs 4 are located between two guiding axles, be equipped with matched with direction recess relatively on the second pressure strip 3 to the guiding axle, the degree of depth of direction recess is greater than the length of guiding axle.

For example, in other embodiments, unlike the above-described embodiments, as shown in fig. 1 and 2, the left and right sides of the inverted concave plate 15 are respectively provided with a plurality of manual permanent magnetic chucks 7 flush with the bottom thereof, and the manual permanent magnetic chucks 7 are provided with a rotation button for controlling whether the manual permanent magnetic chucks 7 are magnetic, wherein the manual permanent magnetic chucks 7 are prior art and will not be described in detail herein.

The utility model discloses a theory of operation does: place the groove at stator core 1 with undercut plate 15, remove undercut plate 15, under the effect of the elastic force of second spring 8, when two hypotenuses were simultaneously with mounting groove 101 notch right angle limit contact about locating piece 6, make undercut plate 15 adsorb to be fixed at stator winding 2 through manual permanent magnetism sucking disc 7, first pressure strip 5 was in mounting groove 101 intermediate position this moment, through rotatory handle 12 fast rotation screw rod 11, make screw rod 11 downstream, thereby drive first pressure strip 5 downstream and evenly exert pressure to stator winding 2, guide bar 14 has played the effect of vertical direction, the straightness that hangs down of first pressure strip downstream has been guaranteed, the even atress of stator winding 2 has further been guaranteed. The utility model discloses convenient operation has reduced workman intensity of labour little, has improved work efficiency, can make stator winding 2 even compressing tightly the in-process atress to the insulating damage of winding has been avoided.

It should be noted that the above embodiments are only used to illustrate the present invention, but the present invention is not limited to the above embodiments, and any simple modification, equivalent change and modification made to the above embodiments by the technical essence of the present invention all fall into the protection scope of the present invention.

Claims

1. A generator stator winding radial compression device, comprising:

an inverted concave plate (15);

the positioning block (6) is horizontally arranged in the inverted-concave plate (15), the cross section of the positioning block is trapezoidal, two limiting rods (9) are vertically arranged at the upper end of the positioning block (6) and the long side of the positioning block (6) faces upwards, the length of the short side of the positioning block (6) is larger than the width of the stator core (1) mounting groove (101), and the limiting rods (9) penetrate through the upper end of the inverted-concave plate (15) in a sliding mode;

the first pressing plate (5) is horizontally arranged at the lower end of the positioning block (6), two guide rods (14) are vertically arranged at the upper end of the positioning block relatively, and the guide rods (14) penetrate through the first pressing plate (5) in a sliding mode;

screw rod (11), along vertical direction run through inverted concave plate (15) and locating piece (6) in proper order, screw rod (11) and inverted concave plate (15) threaded connection and with locating piece (6) contactless, screw rod (11) lower extreme and first pressure strip (5) upper end are rotated and are connected.

2. The generator stator winding radial compression device of claim 1, wherein: the horizontal second pressure strip (3) that is equipped with in first pressure strip (5) below, connect through a plurality of first springs (4) between first pressure strip (5) and the second pressure strip (3), the width of first pressure strip (5) and second pressure strip (3) all is less than the width of mounting groove (101).

3. The generator stator winding radial compression device of claim 2, wherein: the upper end center of the inverted concave plate (15) is provided with a threaded sleeve (13) in a T shape in a penetrating mode, the threaded sleeve (13) is detachably and fixedly connected with the inverted concave plate (15), and the threaded sleeve (13) is in threaded fit with the screw rod (11).

4. The generator stator winding radial compression device of claim 1, wherein: the upper end of the screw rod (11) is provided with a rotating handle (12), and the rotating handle (12) is L-shaped.

5. The generator stator winding radial compression device of claim 1, wherein: the utility model discloses a spacing pole (9) is characterized in that gag lever post (10) that is the shape of falling L rather than being equipped with in gag lever post (9) upper end, horizon bar (10) and gag lever post (9) fixed connection, fixed connection can be dismantled with locating piece (6) to gag lever post (9) lower extreme.

6. Generator stator winding radial compression device according to claim 5, characterised in that: the outer wall of the limiting rod (9) is sleeved with a second spring (8), and the second spring (8) is located between the inverted concave plate (15) and the positioning block (6).

7. The radial compression device of a generator stator winding according to any one of claims 1 to 6, wherein: the left side and the right side of the inverted concave plate (15) are respectively provided with a plurality of manual permanent magnetic chucks (7) which are parallel and level with the bottom of the inverted concave plate.

8. The generator stator winding radial compression device of claim 7, wherein: and a rotary button for controlling whether the manual permanent magnetic chuck (7) is magnetic is arranged on the manual permanent magnetic chuck (7).