JPS60118040A - Underwater rotary electric machine - Google Patents

Abstract

PURPOSE:To improve the cooling efficiency of a winding by disposing a spacer together with wires in a core slot, and passing coolant in gaps formed by the core slots, the wires and the spacer. CONSTITUTION:A spacer 5 is contained in addition to wires 4 in a core slot 2. Gaps 5 formed by the slots 2, the wores 4 and the spacer 5 and the hollow portion 5' of the spacer 5 are formed to be axially passed. In the core structure described above, the gaps 5 and the hollow portion 5' are filled with liquid, supplied with coolant from the exterior, and the coolant is circulated. Thus, since the axial coolant passing area in the core slot increases, the cooling efficiency can be improved.

Description

[Detailed Description of the Invention] [Technical Field of the Party] The present invention relates to a winding 71 in which the winding is immersed in a liquid and operated in a steady state.
! Regarding medium rotation 'ichi 4 賎.

[Technical background of the invention and its points]

Rotating electric machines that are generally used in liquids, for example submersible electric gutter, are surrounded by stator frames, shaft brackets, etc.
The iron core, windings, etc. are immersed in water, and cooling of the iron core and windings is generally performed by natural cooling using this water or by forced lead ingots using a pump or the like. Figure 1 shows a cross section of the main parts of a conventional submerged rotating electric machine. In Figure 1, 1 is an iron core, 2
is the direction of the iron core, 3 is a wedge, 4 is an electric wire, and 5 is a gap extending in the axial direction. -Second axial clearance 5W? This is done by passing water through this section. However, in the case of such a method, the gap between ll1jt above C2 and above is inserted by inserting the wedge 3 after the wire is placed in the core groove. 1) force (the outer jacket is deformed, C2, the water permeation area is reduced to just a little per sill, and the cooling efficiency of the winding is reduced. j/3< There was a drawback.

[Purpose of G1] The purpose of G1 is to ensure the above-mentioned ``1 step'', improve the cooling efficiency of the winding, and develop a submerged circuit transmission system that can achieve effective cooling. It is about providing.

[A+PT of invention]

To achieve the above object, the present invention (second aspect) is to place one or more spacers in the axial direction of the core together with the wire when storing the wire in the core bay, and to This is characterized in that the windings are effectively cooled through the dk body in the axial gap in the formed iron core F+iT.

[Embodiments of the invention]

An embodiment of the present invention will be explained below from FIG. 2.

As shown in the figure, in addition to the iron core h・)2(: is 1djρA4,
Fits the Sube f6. This spacer has a middle pipe shape, and the 111 end is placed in the core groove 2 and then fixed to the right gland 9:, l:, so that it has an appropriate length than the core lamination length. Make it stick out. Also, Ri (heart 7 + '42
, the electric wire 4, and the gap 1ijj5 formed by the space f6
And the y capital 5' in the spacing has a structure that penetrates in the -qf+ direction. In the above-mentioned structure, the gap 5 and the hollow part 5' are filled with liquid, and a cooling liquid is supplied from the outside to form a lump.

The material of space f6 is wedged with stainless steel etc.
It only needs to be a material that does not cause large deformation after Kojin, is resistant to M11, and has good heat transfer properties.If the size is small, the water flow area will be reduced, and if it is too large, it will be difficult to insert it into the core groove. Since it is troublesome, it is appropriate to use something about the thickness of an electric wire.

Due to the above-mentioned horizontal spread, the area of the coolant passage in the axial direction within the core groove is increased compared to the conventional one, so that the cooling edict is broadly similar to the above. Furthermore, the arrangement of the sub-tooths in the iron core 7i4 is not limited to the illustrated example, and may be changed by 1 or 6 as necessary. For example, when the ambient temperature is low and the iron core temperature is high, this Haji J＜heart? If it is transmitted to the sacrificial line in jη and causes the 2J line 1'1゛□1 to rise, then the space? 1◇, place inside the heart vortex on the side closer to the heart, and add 3.1+-=J of hydrating fluid to the inside of the spacer 15
- By doing so, it is possible to stop the transfer of heat from the outer cylinder S to the winding by 1 inch, and reduce the heat loss of the winding by 7 μA.

Another non-inventive example is shown in Figure 3. Third, in 1, instead of the spacer in the middle above, a synthetic resin space f7 with a radial shape is used, and the contact surface with the line of 'j is shown in Figure 9.
It is constructed with a curvature corresponding to the outer circumferential surface of the electric wire, and the space between the axial lines and the spacer is formed by the curvature that corresponds to the outer peripheral surface of the electric wire. This is a method of agitation and cooling through cooling fluid. In the case of a spacer of this shape (the second one does not require thermal conductivity and synthetic resin can be used, the third one shows an example in which a spacer 97Y is inserted between six electric wires 4, It goes without saying that the shape of the space f7 can be adjusted depending on the number of power supplies 4.

〔Effect of the invention〕

As mentioned above, according to this book, a spacer is placed together with the JD wire in the iron core groove of a liquid-submerged rotating electric machine, and a cooling liquid is applied to the BJ line formed by C2. This makes it possible to reduce the increase in the winding by 111 degrees.

[Brief explanation of drawings]

Figure 1 shows the iron core Yr of a conventional 7" one-leg rotating electric machine.
Figure 2 is a cross-sectional view showing one embodiment of the present invention, and Figure 31 is a cross-sectional view of the embodiment of A. Heart 1 point 4...
Jql 6 #7...Spacer. Agent: Patent attorney: Yu Chika (and 1 other person) Figure 1

Claims (1)

[Claims] A submerged rotary basket 4 is characterized in that an electric wire and a spacer, which is provided almost parallel to the electric wire and has a space through which liquid flows, are biased toward the iron core.