JPS608533Y2 - Protective cover for rotating electrical machinery - Google Patents

Description

[Detailed Description of the Invention] (Technical Field) The present invention relates to a rotating electric machine such as a generator, and particularly relates to an improvement of a protective cover that encloses an excitation device and the like.

(Prior Art) Conventionally, as shown in FIGS. 1 to 3, a rotating electric machine such as a generator or a synchronous motor has a direct connection side connected to a rotational drive source such as a diesel engine (FIGS. 1 and 3). On the opposite side of the fuselage 1, which has a cooling air exhaust system connected to it (on the right side),
The excitation device 2 is connected and a protective cover 3 having an intake hole 13 on the side wall facing the shaft end face on the non-direct connection side is connected so as to enclose the excitation device 2 and the like. A cable connection chamber 8 is defined in the upper part of the inside of the protective cover 3 in the width direction (
A side cover 5 is attached to the upper outer side (in the left-right direction in FIG. 2).

Note that in FIGS. 1 to 3, reference numeral 7 indicates a partition member for forming the cable connection chamber 8, which is made of, for example, a wire mesh or the like.

Reference numeral 9 indicates a support member for the partition member 7, reference numeral 10 indicates a hole for inserting a lead wire, and reference numerals 11 and 12 indicate a field coil of the fuselage 1, a rectifying device, and a rotor coil of the excitation device 2. Lead wire for connecting rectifier, 13.13. ... indicates the intake hole.

However, in the conventional technology having the above configuration,
Due to the need for a large amount of cooling air to cool the fuselage 1, the excitation device 2, etc., the protective cover 3 must be made large, and a box-shaped side cover 5 is separately configured on one side of the protective cover 3. Since the cover was protruding from the top, the overall structure of the cover was not in harmony, making it difficult to maintain a good truce, and the cover also became large, preventing it from becoming more compact.

Furthermore, since the pull-out cable 4 was configured such that only the cable was exposed from the side cover 5, no consideration was given to protecting the pull-out cable 4.

For this reason, especially in a rotating electric machine installed outdoors, the exposed lead-out cable 4 may deteriorate due to rainwater, solar heat, etc., resulting in a dangerous situation.

(Purpose of the invention) This invention was devised in view of the above-mentioned drawbacks of the prior art, and its purpose is to make the protective cover compact and to ensure the protection of the pull cable. It is something to do.

(Summary of the invention) Based on the above-mentioned purpose, the present invention provides a protective cover for a rotating electrical machine such as the one described above. A pair of channel-shaped overhanging cover members are fixed to both sides of the box-shaped frame below the upper cover member by extending them in the vertical direction while facing each other. A net-like partition member is provided inside, spaced apart from the upper cover member, and side cover members are stretched on both sides of the box-shaped frame below the net-like partition member, and,
A front cover member equipped with a through hole for fitting an excitation device of a rotating electrical machine is attached to the front of the box-shaped frame, and a rear cover member equipped with an intake hole is attached to the back of the box-shaped frame. It was configured as follows.

With this configuration, a cable connection chamber is formed above the mesh partition member, and the cable connection chamber is surrounded on both sides by an upper cover member and an overhanging cover member to protect the cable from rainwater and solar heat. If a cable is inserted into one of the cable lead-out parts, the other cable lead-out part can be used as an opening for sucking in a large amount of cooling air.

(Example) An example of the present invention will be described below based on FIGS. 4 to 7.

Reference numeral 14 denotes a box-shaped frame, and the box-shaped frame is assembled into a cubic shape using angle materials, etc., and has a long side and a height that are approximately the same as the width or diameter of the direct connection side of the fuselage 1, and is It is formed on the short side with a slightly narrow width.

Reference numeral 15 designates an upper cover member, and the upper cover member 15 has a sufficient extra length to be extended outwardly in the shape of wings on both short sides of the top of the box-shaped frame 14, and Both ends thereof are bent at a certain length to form a hanging portion 15a.

Reference numeral 16 designates an overhanging cover member, and the overhanging cover member 16 is made of a channel material having a groove 16a and a notch 16b at the lower end. They face each other and are fixed, and the hanging part 15a of the upper cover member 15 is fixed to the upper part from the outside.

Reference numeral 17 denotes a mesh partition member, and the mesh partition member 17 is fixed horizontally within the box-shaped frame 14 at approximately the same height as the conventional mesh partition member 8 (FIGS. 2 and 3).

Reference numeral 18 denotes a side cover member, and the side cover member 18 is stretched below the net-like partition member 17 on both sides of the box-shaped frame body 14.

Therefore, the opening 21 is located above the side cover member 18.
is formed.

Reference numeral 19 denotes a front cover member, and the front cover member 19 is a plate that covers the front surface (exciter 2 side) of the box-shaped frame 14, and is a transparent plate that fits the excitation device 2 and the cable 4a. Hole 19a
It is equipped with

Reference numeral 20 denotes a rear cover member, and the rear cover member 20 is a plate covering the back surface (deexcitation device 2 side) of the box-shaped frame 14, and is provided with an intake hole portion 20a.

The protective cover 3a of the present invention constructed in this way has a front cover member 19 with a through hole 19a extending in an occluded shape between the upper cover member 15 and the mesh partition member 17, and a rear cover member 19 on the back. in one part 20 and with openings 21.2 on both sides.
A cable connection chamber 8 surrounded by 1 is formed.

Further, on both sides of the cable connection chamber 8, there are cable lead-out portions 22 (open at the bottom) surrounded by the upper cover member 15, its hanging portion 15a, and both overhanging cover members 16.
FIG. 6) is formed.

Therefore, in the present invention, the lead wire 4a is connected to the through hole 19.
a, and is guided from the cable connection chamber 8 to one of the cable lead-out portions 22 via either the left or right opening 21.

Therefore, the other cable lead-out portion 22 remains as it is, but is used as an opening for sucking in a large amount of cooling air required for cooling the excitation device 2.

In this way, the conventional protective cover 3 and the side cover 5 are compactly integrated, and when the lead wire 4a is pulled out from either the left or right cable lead-out portion and pulled out by the pull-out cable 4, the pull-out cable 4 is connected to the hanging portion 15a and the overhanging cover. Part 16 protects it from rainwater and solar heat, extending its service life.

In the above embodiment, a generator was used as an example, but the present invention can also be applied to a synchronous motor.

(Effects) According to the present invention described above, the cable lead-out portion 22 surrounded by the upper cover member 15, its hanging portion 15a, and the overhanging cover member 16 is formed on both sides of the cable connection chamber 8. Since the pull-out cable 4 can be led to the outside from either the left or right cable lead-out portion 22, the remaining cable lead-out portion 22 can be used as an intake hole for a large amount of cold air, while the pull-out cable 4 can be Since it is protected from solar heat or external mechanical forces, its useful life is extended and it is economical.

Moreover, since the conventional protective cover 3 and side cover 5 are integrally constructed, and the length of the short side is made slightly narrower, it is symmetrical, has a good physical appearance, and is compact.

[Brief explanation of drawings]

Fig. 1 is an external view of the conventional example, Fig. 2 is a partially sectional rear view of Fig. 1, Fig. 3 is a partially sectional side view of Fig. 1, and Fig. 4 is an exploded view of essential parts of an embodiment of the present invention. 5 is an external view of the assembled state shown in FIG. 4, FIG. 6 is a partially sectional rear view of FIG. 5, and FIG. 7 is a partially sectional side view of FIG. 5. 1...Body of rotating electric machine, 2...Exciter, 3a...Protective cover, 14...Box-shaped frame, 15...・Upper cover part, 16...
...Protrusion cover member, 17...Mesh partition member, 1B... Side cover member, 19...
Front cover member, 19a... Through hole, 20...
...Rear cover part, 20a...Intake hole.

Claims (1)

[Scope of utility model registration request] In a protective cover for a rotating electric machine, a narrow upper cover member 15 extending outward in a wing-like manner from both measuring parts is stretched on the top of a box-shaped frame 14, and a box-shaped lower part of the upper cover member 15 is provided. By fixing a pair of channel-shaped projecting cover members 16 to both sides of the frame body 14, extending vertically and facing each other, a cable lead-out portion 22 is defined, and the box-like frame body 1
A cable connection chamber 8 is defined by providing a net-like partition member 17 inside the upper cover member 15 apart from the upper cover member 15, and side covers are provided on both sides of the box-like frame 14 below the mesh-like partition member 17. The members 18 are stretched respectively, and the box-shaped frame body 14
A front cover member 19 is provided with a through hole 19a into which the excitation device 2 of the body 1 of the rotating electrical machine is fitted, and a box-shaped frame 1
The cable 4 is introduced into the cable connection chamber 8 from the front and rear through holes 19a, and the cable 4 is inserted into the cable connection chamber 8 through the front and rear through holes 19a.
A protective cover for a rotating electrical machine, characterized in that the cover can be led out from either the left or right cable lead-out part 22.