JPH0217617A - Heating element - Google Patents

Abstract

PURPOSE:To prevent a piping, etc., from protruding toward the side of an outer box and reduce installation area of a heating element by piping from the upper surface of the heating element main body to a cooler using a double pipe and reciprocating a refrigerant. CONSTITUTION:Gas due to heat generated by a transformer main unit 1 is sent from the lower part of a screening plate 3 toward the transformer main unit 1 such as a coil in the direction of an arrow by a blower 5 for cooling it. Then, gas heated receiving heat from the transformer main unit 1 is set to a cooler from the upper part of an outer box 2 through the area between an inner pipe 61 and an outer pipe 62 of a piping 6D, dissipates heat here, and then returns to the blower 5 through the inside of the inner pipe 61 of the piping 6D. These operations are repeated continuously, gas-insulated transformer is operated, protrusion of the outer box 2 toward the side is eliminated, and then the installation area is reduced. A heat-insulating material 7 is applied to the inner pipe 61 of the piping 6D of this gas-insulated transformer, thus preventing gas passing through the inside of the inner pipe 61 after cooling from being heated by gas passing between the inner pipe 61 and the outer pipe 62, and a pressure-difference meter 9 is provided at each pulled-out branches 9A and 9B.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a heating element including a main body of a heating element such as a transformer and a cooler for dissipating its heat.

[Conventional technology]

Figure 3 is a sectional view showing a gas insulated transformer as an example of a conventional heating element. There is. (2) is an outer box that houses the transformer body (1), and a gas such as buffalo sulfur is sealed inside, which serves as both a refrigerant and an insulating material. (3) is a partition plate installed inside the outer box (2), which has air holes (not shown) in places facing the coils to efficiently cool the transformer body (1), especially its coils. It's opened.

A heating element body is composed of a transformer body (1), an outer box (2), and a partition plate (3). (4) is a cooler equipped with gas inlets and outlets (41A) and (41B) at both ends, and the outer box (2)
It is located above the . (5) is a blower installed on the side of the outer box (2) to circulate gas% (6A), (
6B).

(6C) is the piping that connects the outer box (2), cooler (4), and blower (5), and (6A) is the upper surface of the outer box (2) +211
and the cooler (4) entrance/exit (41A), (6B) the cooler (4) entrance/exit (41B) and the blower (5), and (6C) the blower (5) and the lower side of the outer phase (2). They are connected to form a gas circulation flow path.

Next, the operation will be explained. Heat is generated when the coil of the transformer body (1) is energized, but the gas is pumped by the blower (5) through the pipe (6C) and into the outer box (2) as shown by the arrow.
The transformer body (1), including the coils, is cooled by passing through the transformer body (1) from below as shown in the diagram of the partition plate (3).

The gas heated by the heat from the transformer body (1) enters the cooler (4) from the top of the outer box (2) through the piping (6A) as shown by the arrow, where it dissipates heat and flows through the piping. It passes through (6B) and returns to the blower (5). The above steps are performed continuously to operate the gas insulated transformer.

[Problems to be Solved by the Invention] Conventional heating elements, such as gas-insulated transformers, are configured as described above, and refrigerant is sent to the heating element body from the side. Because of this, there were problems such as piping protruding from the heating element body, which increased the installation area of the heating element.

This invention was made to solve the above-mentioned problems, and aims to provide a heating element that requires a small installation area.

[Means to solve the problem]

The heating element according to the present invention is configured to pipe a double pipe from the upper surface of the heating element main body to the cooler so that the refrigerant is reciprocated.

[Effect]

Since the heating element in this invention is piped from the upper surface of the first heating element body to the cooler by a double pipe, no piping protrudes to the side of the first heating element body.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. 1st
Figure 1 is a sectional view showing a gas insulated transformer as a heating element according to an embodiment of the present invention. (not shown).

(2) is an outer box that houses the transformer body (1), and the inside is filled with a gas such as sulfur hexadia, which also serves as a refrigerant and an insulating material. (3) is a partition plate installed inside the outer box (2), which has air holes (not shown) in places facing the coil to efficiently cool the transformer body (1) such as the coil. It's opened. The transformer main body (1), the outer box (2) and the partition plate (3) constitute a heating element main body. (4) is a cooler equipped with a concentric gas inlet/outlet (41C) at one end, and is provided above the outer box (2). (5) is a blower that circulates gas, and is provided inside the outer box (2) and below the partition plate (3). (6D) is the outer box (2) and the cooler (
4), which is pulled out from the top surface of the outer box (2) and connected to the inlet/outlet (41C) of the cooler (4). This piping (6D) is a double pipe consisting of an inner pipe (4) and an outer pipe, and the inner pipe is connected from the cooler (4) to the outer box (2) by a partition plate (3). is extended to the blower (5) through the cooler (4) and the blower (5).
It forms a gas flow path that communicates with the The outer tube (6X5 is the gap between the inner tube [F]υ and the upper part of the outer box (2) and the cooler (
4) is formed to communicate with the flow path. Since it is configured as above, the piping (6D) is connected to the side of the outer box (2).
etc. do not protrude.

Next, the operation will be explained. Similar to the conventional example shown in Fig. 3,
The transformer body (1) generates heat, but gas is sent by the blower (5) from below the partition plate (3) toward the transformer body (1), such as the coil, as shown by the arrow to cool it. The gas heated by the heat from the transformer body (1) cools down from the top of the outer box (2) through the gap between the inner pipe and outer pipe of the pipe (6D) as shown by the arrow. The heat is sent to the air blower (4), where the heat is dissipated, and the heat is returned to the blower (5) through the inner pipe (2) of the pipe (6D). The above steps are performed continuously to operate the gas insulated transformer. In the case of a gas insulated transformer like this example, it is often installed indoors, and the outer box (2
) does not protrude on the sides, so the building floor space can be reduced.

This prevents the cooled gas passing through the inner tube (2) from being heated by the gas passing through the gap between the inner tube (2) and the outer tube. In addition, branch pipes (8A) and (8B) are drawn out from the inner pipe (2) and outer pipe, respectively, and a differential pressure gauge (9) is installed there to monitor them.
It is now possible to diagnose whether gas is flowing normally.

In the above embodiment, the refrigerant is forced to circulate as if the gas is sent by a blower, but natural circulation may also be used.Although gas is used as the refrigerant, it may be a liquid such as oil.

[Effects of the Invention] As described above, according to the present invention, piping is arranged from the upper surface of the heating element main body to the cooler using double pipes to reciprocate the refrigerant. This has the effect that the heating element does not protrude, and therefore the installation area of the heating element can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a gas insulated transformer as a heating element according to one embodiment of the present invention, FIG. 2 is a sectional view showing a gas insulated transformer as a heating element according to another embodiment of the invention,
FIG. 3 is a sectional view showing a gas insulated transformer as a conventional heating element. In the figure, (1) is the transformer body, (2) is the outer box, and (2) is the main body of the transformer.
) is the top surface, (4) is the cooler, (6D) is the piping, +6
11. + (to) is its inner tube and outer tube. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Claims] A heating element body, a cooler for dissipating heat generated in the heating element body, and piping connecting the cooler and the heating element body to form a refrigerant flow path between the two, the piping is composed of a double pipe drawn out from the upper surface of the heating element main body, and the inner pipe forms one flow path,
A heating element characterized in that the other flow path is formed in a gap between the inner tube and the outer tube to cause the refrigerant to reciprocate.