JPH029546Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to an improvement in a type of capacitor equipment in which a capacitor and a series reactor are connected through an oil duct.

[Purpose and structure of the invention]

Figures 1 and 2 show front views of conventional capacitor equipment consisting of a capacitor and a series reactor.
In FIG. 1, 2 is a tank that stores the capacitor body, 6 is a tank that stores the series reactor, and a retracting air bushing 1 is attached to the top surface of the tank 2, and an oil amount adjustment device 3. will be installed. This oil amount adjustment device 3 adjusts the oil amount on the capacitor side, the series reactor side, and the oil duct.

An oil duct 4 is connected between the tank 2 and the tank 6, and a conductor connecting the capacitor body and the reactor body is passed through the oil duct 4 to electrically connect them. In this case, the capacitor and the series reactor are separated. When transported to the site and installed,
A hand hole 5 is provided in the middle of the oil duct 4 in order to connect the oil duct 4 between the two and perform conductor connection work at the same time.

By the way, in the capacitor equipment having such a configuration, the upper surface of the series reactor tank 6 is relatively narrow, and it is difficult to place the insulating oil amount adjusting device on the series reactor side on top of this. capacitor on the top surface of
The series reactor and oil volume adjustment device for the oil duct are installed together.

If such an oil amount adjustment device is installed on each equipment side, the oil duct 4 will rise on the top surface of the tank 6 of the reactor, as shown in FIG.
Since the space for placing the oil amount adjusting device 3b is limited, the pedestal 7 is often assembled and the oil amount adjusting device 3b is placed thereon. Note that 3a is an oil amount adjusting device on the condenser side.

The all-in-one type oil volume adjustment device 3 shown in Fig. 1 is quite large, and therefore the oil volume adjustment device 3 protrudes from the top surface of the tank 2 in order to maintain an insulating distance from the lead-in air bushing 1. In addition, as shown in Fig. 2, assemble the pedestal 7,
If the oil amount adjusting device 3b is placed on this, it will pose a problem in terms of seismic design.

As mentioned above, when connecting the terminals of a capacitor and a series reactor with a conductor and insulating the conductor with oil, an oil duct is usually connected between the two with a bellows or hand hole in between. Handholes are used to ultimately connect conductors, and after the conductors are connected during equipment installation, they are rarely used while the equipment is in good condition.

In this way, the present invention installs the above-mentioned lump-type oil amount adjustment device on the hand hole, which is rarely used after being used for connecting conductors. The aim is to improve the unreasonable arrangement of the oil amount adjusting device as shown in the figure, and to provide a capacitor facility that is extremely stable both electrically and mechanically.

The invention will be explained by way of an example of a three-phase capacitor installation shown in FIG.

In the figure, the same parts as in FIGS. 1 and 2 are indicated by the same reference numerals.

2 is a tank that stores the capacitor body;
6 is a tank that houses the series reactor body, and 1 is three air bushings for retraction.

A hand hole 5 and an expansion joint 10 are connected to three conductor draw-out holes 8 that protrude laterally from the top of the tank 2, and an oil duct 4 is also connected thereto.The other end is connected vertically to the tank 6 from above, and both The devices are connected.

Reference numeral 9 indicates a flexible lead wire that connects a conductor placed between both devices such as the oil duct 4 through the hand hole 5. After connecting the conductors with the flexible lead wire 9,
Using the upper cover of the hand hole 5, the insulating oil for the capacitor side, the series reactor side, the oil duct 4, etc. can be adjusted individually.
For example, an oil amount adjusting device 12 that includes a large number of bellows is placed and fixed.

Although not shown, when the supporting force is insufficient for the weight of the oil amount adjusting device 12, this is supplemented by a reinforcing support placed on the tank 2 or from the ground.

FIG. 4 shows a cross-sectional view of an example of the hand hole portion. Reference numeral 5 designates a hand hole that forms part of the oil duct, and reference numeral 11 designates a lid that is attached to the upper surface of the hand hole 5 to seal the inside. Reference numeral 10 denotes an expansion joint, and in the figure, the hand hole 5 and the expansion joint 10 are directly connected, but the oil duct 4 may be interposed therebetween.

Arrow a indicates the capacitor side and arrow b indicates the series reactor side, but the conductor 13 inserted into the outlet hole 8 on the capacitor side or the oil duct 4 (not shown) connected to the outlet hole 8 is insulated. Oil duct 4 or extraction hole 8 by spacer 14
Conductor 1 on the reactor side is supported at the center of
3' is also supported at the center of the oil duct 4 by an insulating spacer 14', and the ends of the conductors 13, 13' are connected to the oil duct 4 etc. with the hand hole 5 midway between the capacitor side and the reactor side. A flexible lead wire (braided wire) 9 connects both conductors 13 and 13' inside the hand hole 5, and a crepe Insulate with paper. After completing such connections, the lid 11 is used to seal the lid 11, the inside is evacuated, and the inside is filled with insulating oil. After filling with insulating oil or sealing with lid 11, this lid 1
The oil amount adjusting device for the condenser, reactor, and oil duct as described above is placed on top of 1 and fixedly supported. When the supporting force is insufficient, the support body 15 is used for reinforcement.

Although the three-phase capacitor equipment has been described above, a similar configuration can also be adopted for the single-phase capacitor equipment.

〔effect〕

As explained above, in this invention, the oil amount adjustment device is installed in the space above the hand hole that becomes unnecessary after the conductor is connected, so it is necessary to keep a sufficient distance from this oil amount adjustment device to the air bushing for lead-in. Compared to conventional equipment of this kind, the structure of the upper part of the equipment is organized and aesthetically pleasing, and earthquake resistance can also be improved.

[Brief explanation of the drawing]

FIG. 1 and FIG. 2 are both front views showing examples of conventional capacitor equipment. FIG. 3 is a front view of the embodiment of the present invention. FIG. 4 is a structural explanatory diagram of the hand hole portion. 1... Pneumatic bushing for lead-in, 2... Capacitor tank, 3... Condenser, series reactor, bulk oil amount adjustment device for oil duct, 3a... Oil amount adjustment device for capacitor, 3b... Series reactor, oil amount adjustment device for oil duct , 4... Oil duct, 5... Hand hole, 6... Series reactor tank, 7... Frame, 8... Pull-out hole, 9... Flexible lead wire, 10... Expansion joint, 11... Hand hole cover, 12... Oil amount adjustment Device, 13, 13'...Conductor, 14, 14'...Insulating spacer.

Claims (1)

[Scope of utility model registration request] This type of capacitor equipment is composed of a capacitor and a series reactor, and the devices are connected by an oil duct, in which an oil amount adjustment device is installed on a hand hole provided in the middle of the oil duct.