JP2552734B2 - Evaporative cooling stationary induction device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an evaporative cooling type static induction device filled with an insulating gas and a cooling medium, and more particularly, to a coolant liquid flowing down to cool the side face of an iron core. The present invention relates to an evaporative cooling type stationary induction device.

[Prior Art] Hereinafter, a conventional evaporative cooling type static induction device will be described with reference to FIGS. 4 to 9 by taking an outer iron type evaporative cooling type gas insulated transformer as an example. 4 to 9, (1) is a coil group, (2) is an iron core, (3) is a tank, and the electromagnetic shield (4a) is welded to the inner wall surface of the tank (3). (4b) is an electromagnetic shield, which is provided in the coil group (1). (4c) and (4d) are the gaps between the shields, and (5) is the opposing tank (3).
Upper wedges interposed between the iron core retainer (20) and the coil group (1) arranged on the two side wall surfaces of (1), (5a) a gap between wedges, (6) a liquid passage spacer, and (7) a shield The saucer (8) is an insulating angle and the electromagnetic shield (4
Insulates the contact between a) and (4b). The refrigerant liquid (10) is supplied from the upper part of the tank (3) and flows down the side surface of the iron core through the shield gap (4c) and the wedge gap (5a). (21) is a cooling supply duct located above the coil group (1), (22) is a bushing, (23)
Is the lower wedge.

In the above configuration, the refrigerant liquid (1
The flow path of (0) is the space (4) between the shields of the electromagnetic shield (4a).
Coil group (1) through the flow path that flows down the side of the iron core on the tank (3) side through c) and the gap between wedges (5a)
It is divided into flow paths that flow down the side surface of the tongue core located inside. The coolant liquid (10) flowing through the gap between wedges (5a) falls on the upper surface of the electromagnetic shield (4b) provided in the coil group (1) and accumulates in the shield tray (7) before the gap between shields (4d). ) And the side surface of the tongue core should flow down, but as shown in FIG.
There is a risk that the tongue core and the tank-side core may flow on both sides, and the amount of the refrigerant liquid (10) supplied to the tongue core may decrease. As a result, in order to supply the required amount of the refrigerant liquid (10) to the tongue iron core, the supply amount had to be increased.

[Problems to be Solved by the Invention] In the conventional evaporative cooling type stationary induction device as described above, since the refrigerant liquid is not efficiently supplied to the tongue core,
There is a problem that the local temperature of the iron core may rise and that the supply amount of the refrigerant liquid needs to be increased in order to reliably supply the required amount.

The present invention has been made to solve such a problem, by effectively guiding the refrigerant liquid supplied through the gap between the wedges to the tongue portion iron core, preventing a local temperature rise of the iron core, and An object of the present invention is to obtain an evaporative cooling type stationary induction device capable of reducing the amount of refrigerant liquid used.

[Means for Solving the Problems] The evaporative cooling type static induction device according to the present invention is provided with a damming angle having a notch between the upper wedge and the tank.

[Operation] In the present invention, the refrigerant liquid flowing through the gap between the wedges is guided by the blocking angle to the tongue core because it does not flow to the iron core on the tank side.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. The same or corresponding parts as in FIGS. 4 to 9 are designated by the same reference numerals, and the description thereof will be omitted.

A blocking angle (9) having a notch (9a) is provided on the upper surface of the electromagnetic shield (4b). The blocking angle (9) notch (9a) is aligned with the liquid passage spacer (6) and the insulating angle (8).

With the above-described configuration, the refrigerant liquid (10) flowing down from the cooling supply duct (21) can be separated from the wedge (5) between the upper wedges (5).
When it flows through a) and falls on the top surface of the electromagnetic shield (4b), the whole amount is accumulated in the shield pan (7) by the damming angle (9), and then passes through the inter-shield gap (4d) to the core (2). Run down the side of the tongue core. Without the damming angle (9), part of the refrigerant liquid (10) flowing through the inter-wedge gap (5a) was flowing down on the side surface of the iron core on the tank (3) side. Since the blocking angle (9) is provided, the entire amount of the cooling liquid flows down on the side surface of the tongue core.

[Effects of the Invention] As described above, according to the evaporative cooling type static induction device of the present invention, since the damming angle having the notch is provided between the upper wedge and the tank, the refrigerant flowing through the gap between the wedges. The liquid does not flow to the iron core on the tank side due to the damming angle, but is entirely guided to the tongue iron core, which can prevent the local temperature rise of the iron core, and reduce the supply amount of the refrigerant liquid and thus the usage amount. There is an effect that can be reduced.

[Brief description of drawings]

FIG. 1 is a front sectional view of an essential part showing an embodiment of the present invention, and FIG.
Figure (a) is a plan view of the weiring angle, Figure 2 (b) is a cross-sectional view of the weiring angle, Figure 3 is a plan sectional view of the main part of Figure 1, and Figure 4 is a conventional outer iron type evaporation. Fig. 5 is a front sectional view showing an example of a cooling type gas insulated transformer, Fig. 5 is a side view of the gas insulated transformer of Fig. 4, Fig. 6 is an enlarged sectional view of an essential part of Fig. 5, and Fig. 7 is a sectional view. FIG. 8 is an enlarged view of an essential part of the drawing, FIG. 8 is a plan sectional view of an essential part of FIG. 6,
FIG. 9 (a) is a plan view of the insulating angle, and FIG. 9 (b) is a side view of (a). (1) …… Coil group, (2) …… Iron core, (3)…
… Tank, (5) …… upper wedge, (5a) …… gap between wedges, (9) …… blocking angle, (10) …… refrigerant liquid,
(20) …… Iron core holder.

Claims (1)

(57) [Claims] 1. A tank filled with an insulating gas and a refrigerant liquid,
An iron core provided in the tank, a coil group wound around the iron core, an iron core retainer provided on each inner wall surface of the tank facing each other, and an interposition between the iron core retainer and the coil group. In the evaporative cooling type static induction device in which the upper wedge that presses the coil group is provided, and the refrigerant liquid flowing through the gap between the wedges of the upper wedge is guided to the iron core, the upper wedge is provided between the upper wedge and the tank. It has a blocking angle with a notch, and all of the refrigerant liquid flowing through the gap between the wedges is to be guided by the blocking angle to the tongue core located inside the coil group. Characteristic evaporative cooling type static induction equipment.