JPS61295839A - Stator of rotary electric machine - Google Patents

Abstract

PURPOSE:To improve the working efficiency and the sealability by blocking a gap formed between the supporting ring of a stator and the frame plate of a box frame with flexible tube press-fitted with filler when forming a vent passage by associating a stator core with the box frame. CONSTITUTION:A stator of a rotary electric machine is secured by inserting a stator core 1 into a box frame 5 and welding stator clampers 3 of both sides to a frame plate 7 opposed to the frame 5. In this case, a flexible tube 9 is contained in advance in the groove 4a of the outer periphery of the ring 4, assembled, then filler 10 is press-fitted from one end of the tube 9 to bury a gap formed between a supporting ring 4 arranged in the intermediate and the plate 7 to block it, thereby forming the vent passage of the stator. Thus, the working efficiency is readily improved, smooth seal is enabled, and an abnormal sound due to the vibration of the core 1 during the operation can be eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Minute Hand] The present invention relates to a stator for a rotating electrical machine that incorporates a stator core into a box frame to provide multiple ventilation.

[Conventional technology]

Conventionally known stators for this type of rotating electric machine are shown in FIGS. 5, 6, and 7.

In the figure, reference numeral 1 denotes a stator core around which a stator coil 2 is wound, which is fastened in the axial direction by a stator clamper 3 and a support shaft 4. Reference numeral 5 denotes a box frame for housing the stator, and this box frame 5 is composed of an outer panel 8, a frame plate 7, and a ventilation pipe 6. Reference numeral 11 denotes a plate for closing the gap between the frame plate 7 and the support member 4. Arrows 12 in the figure indicate the flow of cooling air.

Next, a method of combining the stator core 1 and the box frame 5 will be explained. As shown in FIG. 5, the stator core 1 is inserted into the box frame 5 in the axial direction to constitute a stator of a rotating electric machine. In this case, the stator clamper 3 is fixed by welding to the opposing frame plate 7. , ventilation is also blocked at the same time. On the other hand, the support ring 4 facing the frame plate 7 in the middle part II! The rR seal is made by dividing the closing plate 11 into a plurality of parts around the circumference and attaching the frame plate 7 to the seal plate 7 as shown in FIG.
Attach by bolting or welding.

[Problem that the invention seeks to solve]

Since the closing structure of the conventional stator ventilation path device is configured as described above, after the stator core 1 and the box frame 5 are assembled, in order to attach the closing plates 11, the four sides of the outer panel 8, top, bottom, left and right, are There were problems in that it was necessary to provide a manhole, and the installation of the closing plate 11 required a large amount of work time. Furthermore, there were other problems such as the occurrence of abnormal noise due to contact between the support ring 4 and the closing plate 11 due to radial vibration of the stator core 1 during operation.

This idea was made in order to eliminate the drawbacks of the conventional ones as described above, and it makes it easier to close the gap between the support ring of the stator core and the frame plate of the box frame, and also to prevent problems caused by vibration during operation. The purpose of the present invention is to obtain a stator ventilation path device that can eliminate noise.

(Means for solving lI!11!I! point) In the stator of a rotating electric machine according to the present invention, a flexible tube is inserted around the outer periphery of the support ring of the stator core, and a liquid is inserted into the tube. A filler is press-fitted to close the gap between the support ring and the frame plate of the box frame, thereby forming a ventilation path for the stator.

[Effect]

The stator of the rotating electric machine in this invention uses a flexible tube and filler as a closing material to form a ventilation path, making it easy to work with and flexible, allowing for smooth sealing. .

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings. In FIGS. 1 and 2, 1 to 8 are the same as those of the conventional device, 9 is a flexible tube fitted into a groove 4a provided on the outer periphery of the support tube 4, and 10 is a flexible tube. It is a liquid filler that is press-fitted into the inside of the container.

Next, the assembly method will be explained. Fig. 3 is an enlarged view of the frame plate 7 and support ring 4, showing the state before the stator core 1 and box frame 5 are assembled, and Fig. 4 shows the state in which the flexible tube 9 is filled with filler 1 after assembly.
The state in which 0 is press-fitted is shown.

That is, the flexible tube 9 is stored in advance in the outer groove 4a of the support ring 4 of the stator core 1, and the stator core 1 and the box frame 5 are
After assembly, a filler 10 is press-fitted from one end of the recirculating tube 9 to fill the gap between it and the frame plate 7.
By doing so, workability becomes easier, and since it has flexibility, smooth sealing is possible, and problems such as generation of abnormal noise due to vibration of the stator core 1 during operation can be solved.

[Effect of idea]

As described above, according to the present invention, the seals between the supporting wheels of the stator core and the frame plate of the box frame are made of flexible tubes press-fitted with filler, resulting in good workability and improved sealing performance. It has excellent effects such as

[Brief explanation of the drawing]

Figures 1 to 4 show a stator of the electric converter according to an embodiment of this invention; Figure 1 is a front view thereof, Figure 2 is a sectional view taken along the line ■-■ in Figure 1; 3 and 4 are operation explanatory diagrams showing the assembled state, and FIGS. 5, 6, and 7 show the stator of a conventional rotating electric machine, and 5rM is a front view of the stator, and 6fffJ is a front view of the stator. A sectional view taken along the line ■-■ in Fig. 5,
FIG. 7 is an enlarged view of the frame plate and support ring shown in FIG. 5. In the figure, 1 is a stator core, 2 is a stator coil, 3 is a stator clamper, 4 is a support ring, 4a is an outer groove, 5 is a box frame, 6
1 is a ventilation pipe, 7 is a frame plate, 8 is an outer plate, 9 is a flexible tube, and 10 is a filler. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (3)

[Claims] (1) Insert the stator core, which is axially fastened by stator clampers on both sides and a support ring disposed between them, into a box frame having a plurality of frame plates and ventilation pipes on the inner periphery, In a stator of a rotating electric machine, which is formed by fixing a stator clamper of the stator core to a frame plate of a box frame, a flexible tube is installed in the gap between the support ring of the stator core and the frame plate of the box frame. A stator for a rotating electric machine, which is inserted into the tube, and a liquid filler is press-fitted into the tube to close the gap. (2) A stator for a rotating electric machine according to claim 1, wherein the flexible tube is fitted into a groove provided on the outer periphery of the support ring. (3) A stator for a rotating electrical machine according to claim 1 or 2, wherein the filler is injected from one location at one end of the tube.