JPS61236108A - Vapor-cooling type transformer - Google Patents

Abstract

PURPOSE:To simplify the construction of the title transformer without impairing the function of a blower by a method wherein the blower is provided at the upper part of a condenser, thereby enabling to unnecessitate the installation of an independent return piping to be used for a refrigerant. CONSTITUTION:The mixed gas 5 in an airtight tank 1 is forcedly sent to a condenser 10 passing through a common flow passage 23 by a blower 13. The vapor-phase refrigerant in the mixed gas 5 is cooled in the condenser 10, it is liquefied by discharging evaporative latent heat, and the liquid-phased refrigerant 4 spontaneously flows down in the flow passage 23 by gravity and returns to a liquid reservoir. Also, the isolated non-condensing gas in the mixed gas 5 is returned to the upper part of the air-tight tank 1 passing through ducts 21 and 22 by the blower 13.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an evaporative cooling transformer, and more specifically, a transformer filled with a non-condensable gas and housed in a snake-sealed tank. to the main body.

Spreading condensable refrigerant sealed in a sealed tank.

The mixed gas of evaporated gas phase refrigerant and non-condensable gas is forcibly transferred to the condenser using a blower to return the refrigerant to the liquid phase, and this liquid phase refrigerant is returned to the sealed tank by gravity. This relates to evaporative cooling transformers.

[Conventional technology]

Figure 2 is Tokukai Sho! I! This is a conventional evaporative cooling type transformer shown in Ni/3coq10 publication, which consists of a coil (2a) and an iron core (cob) in a sealed tank (1) filled with non-condensable gas. A mixed gas (5) of liquid phase condensable refrigerant (refrigerant) and non-condensable gas (5) is housed in the liquid reservoir (3) at the bottom of the sealed tank (1). is present in the sealed tank (1).The liquid phase refrigerant (Hiro) is placed in the upper part of the sealed tank (1) through the pipe (7) (f) by the pump (6). Spreader (
sent to

A condenser (10) is arranged in parallel on the outside of the sealed tank (1), and the upper and lower ends of the condenser (lO) are connected to the sealed tank (1) through a duct (ll) and piping (12), respectively.
It communicates with the upper part of the tank and the liquid reservoir (3).

A blower (13) is disposed below the condenser (10), and the mixed gas (by the blower (13)) is
(15) from the lower part of the condenser (10) into the condenser (10).

In the above configuration, the temperature of the transformer body (, 2) increases when it is operated. Transformer body (ko)
In order to cool the heat generating part of the liquid phase refrigerant (
The water is transferred to the spargeer (9) by the pump (6). The transferred liquid phase refrigerant is turned into numerous droplets by a sprayer (9) and sprayed onto the coil (core a) and iron core (2b), which are the heat generating parts.At this time, the blower (13) The mixed gas (0) is forced to circulate between the sealed tank (1) and the condenser (10), and a gap is created inside the heat generating part of the transformer body (C/') to allow the mixed gas (0) to flow evenly. By forming the refrigerant (II) in one heat generating part, the four drops of the dispersed refrigerant (II) ride the forced circulation flow of the two mixed gases, and are evenly spread inside the heat generating part.

The liquid phase refrigerant (4=) thus spread over the heat generating part evaporates to remove latent heat of vaporization from the heat generating part and cool the heat generating part.

Inside the sealed tank (1), there is a mixed gas (s) of non-condensable gas for insulating the three transformer bodies (2) and a gas-phase refrigerant (ri) evaporated by heat exchange. Become.

This mixed gas (5) is passed through the condenser (
10). Of the mixed gas (5) transferred to the condenser (tO), the gas phase refrigerant (ri is the condenser (1)
The refrigerant is cooled inside the refrigerant (0), liquefied by releasing latent heat of vaporization, and the refrigerant (liquid) falls by gravity inside the piping (1) and returns to the liquid reservoir (3). The condensable gas is returned to the upper part of the sealed tank (1) by the blower (13). (A
The arrow (/?) indicates the direction in which the liquid phase refrigerant is transferred from the reservoir (3) to the sprayer (9) by the sprayer (9), and the arrow (ttr) teeth.

A direction in which the liquid phase refrigerant (liquid) sprinkled on the heat generating part evaporates and becomes a mixed gas with a non-condensable gas and is transferred from the sealed tank (1) to the condenser (10) by the blower (13);
The arrow (19) indicates the direction in which the gas phase refrigerant in the mixed gas accumulated in the condenser (10) liquefies and returns to the liquid reservoir (3), and the arrow (koO) indicates the direction in which the non-condensable gas moves towards the blower ( 13) indicates the direction of movement within the condenser (10) and sealed tank (1).

[Problem that the invention seeks to solve]

In the conventional evaporative cooling transformer as described above, in order to prevent the condensable refrigerant vapor from flowing into the blower (13), the refrigerant is liquefied by being cooled in the condenser (TO).
Piping (l) connecting the condenser (lO) and the liquid reservoir (3)
The problem was that the structure was complicated and expensive.

This invention was made to solve the above-mentioned problems, and aims to provide an inexpensive evaporative cooling transformer with a simplified structure.

[Means for solving problems]

In the evaporative cooling transformer according to the present invention, a blower for forced mixed gas transfer is installed above the condenser, the lower part of the sealed tank and the lower part of the condenser are connected, and the mixed gas flows into the condenser. and a common flow path for the return flow of refrigerant from the condenser.

[Effect]

In this invention, the mixed gas transferred to the condenser and the refrigerant liquefied in the condenser flow in a common flow path.

〔Example〕

FIG. 1 shows an embodiment of the present invention, and in FIG. 2, the blower (/, 7) is disposed above the condenser (10), and the blower (13) is connected to the duct (2/) (x2 ) to the upper part of each sealed tank (1). The lower end of the condenser (tO) and the lower part of the sealed tank (1) are connected to the mixed gas (&) feed duct and the liquefied refrigerant (They communicate through a common flow path (23) that shares the same return piping.

In addition, since the same reference numerals as in FIG. 2 indicate the same parts, a description of LI11 will be omitted.

With the above configuration, the mixed gas (3
) is forcibly transferred to the condenser (10) via the common flow path (23) by the blower (13), and the gas phase refrigerant in the mixed gas (5) is cooled inside the condenser (10), The latent heat of vaporization is released, the refrigerant is liquefied, and the refrigerant in the liquid phase naturally flows down by gravity in the common flow path (3) and returns to the liquid reservoir (3).

In addition, the separated non-condensable gas in the mixed gas (5) is
The operation of the upper part in the sealed tank (1) through the duct (z2) by the blower (/3) and the like is the same as in the conventional device shown in FIG.

〔Effect of the invention〕

The invention is as apparent from one or more of the descriptions.

Since the blower is disposed above the condenser, the refrigerant liquefied in the condenser flows down the common flow path with the mixed gas and returns to the liquid reservoir. Therefore, an independent return pipe for the refrigerant can be eliminated without impairing the function of the blower, and the structure can be simplified and manufactured at low cost.

[Brief explanation of drawings]

FIG. 1 is an elevational cross-sectional view of one embodiment of the present invention, and FIG. 2 is an elevational cross-sectional view of a conventional evaporative cooling type transformer. C/)...Sealed tank, (C)...Transformer body, (4
t)...Condensable refrigerant, (Ri...Mixed gas, (6)...Pump, (/θ)...Condenser, (/,?)...Blower, (3)...Common flow path. In each figure, the same reference numerals indicate the same - or equivalent parts. Agent So Ga Do Terushimu leather 1 Figure 5, 艷 + T 5: TX'-A 10 Shield suoki 137 "Lower 23 Wise" Arashihiro

Claims (1)

[Claims] The condensable refrigerant stored at the bottom of the sealed tank is transferred and sprayed by a pump to the transformer body housed in a sealed tank filled with non-condensable gas, and the refrigerant in the evaporated gas phase and the Evaporative cooling in which a gas mixture with a non-condensable gas is forcibly transferred to a condenser using a blower to return the refrigerant to a liquid phase, and the refrigerant that has become a liquid phase is returned to the sealed tank by gravity. In the type transformer, the blower is provided at a location where the upper part of the condenser and the upper part of the sealed tank are connected, and the blower is provided at a location where the lower part of the condenser and the lower part of the sealed tank are connected, and the blower is provided at a location where the upper part of the condenser and the lower part of the sealed tank are connected, and the blower is provided at a location where the upper part of the condenser and the upper part of the sealed tank are connected, and the blower is installed at a location where the upper part of the condenser and the lower part of the sealed tank are connected. An evaporative cooling type transformer comprising: a common flow path through which the refrigerant that has become a liquid phase in the transformer flows;