JPS5817326A - Device for detecting temperature in container - Google Patents

Abstract

PURPOSE:To detect the temperature in the container without contact, by providing a displacement means which is displaced in response to the temperature in the container, and detecting the position of the displacement means from the outside of the container without contact. CONSTITUTION:To a cavity part 31 in the vicinity of a connecting part of a high voltage conductor 3 located in a hermetically sealed tubular container 1, a metal container 6, which is connected to a Bourdon tube 8 wherein gas 7 having relatively large thermal expansion coefficient is sealed, is attached. Metal pieces 10, which are rigidly fixed and play the role of a temperature scale, and the displacement means 9 comprising a metal, which is fixed to the tip of the Bourdon tube 8, are observed from the outside of the tubular metal container 1 by using detecting means 11 and 12 comprising X ray fluoroscopy under this state. Thus the temperature is obtained from the relative positions.

Description

[Detailed description of the invention] The present invention relates to a temperature detection device inside a container.

The present invention will be described below with a focus on detecting the temperature of a connection portion of a high voltage conductor in a gas insulated electrical device having a high voltage conductor in a metal hermetic container.

Conventionally, it has been difficult to detect the temperature of a high-voltage conductor connection inside a metal-sealed container.

For this reason, it was not possible to detect the tangential shaft abnormality in the gas-insulated equipment as described above, and there was a risk of a major accident.

The present invention was made in view of the above-mentioned drawbacks of the conventional art, and it is possible to easily detect the position of the displacement means from the outside of the container without contact by providing a displacement means that displaces in response to the temperature inside the container. The present invention provides a device capable of detecting the temperature inside a container.

The invention will be explained with reference to the following figures.

FIG. 1 is a partially cutaway sectional view showing the main parts of a general gas-insulated electric device.

In the figure, (1) is a tubular metal hermetically sealed container, and (2) is the connection part of the high voltage conductor 13).

Fig. 8 is a sectional view of the calf part showing one embodiment of the present invention.
A case is shown in which the present invention is applied to temperature detection of the conductor connection portion 14) shown in Fig. 1 above. In the figure, m to (5) are the same as in Figure O1, (61 is a metal container with a relatively small coefficient of thermal expansion, (7) is a sealed gas with a relatively large coefficient of thermal expansion, (8
1 is a Bourdon tube that expands and contracts due to the thermal expansion of the filled gas (7); 91 is a displacement means that is made of a metal with a high X-ray absorption rate and is displaced in response to the temperature of the connecting portion 14; It is housed at the tip of the Bourdon tube (8). The movement of the displacement means (91) made of this metal is shown by the arrow MOB. The M side indicates the direction of movement at low temperatures, and the B side indicates the direction of movement at high temperatures. (lα is the high voltage conductor (3) or the Bourdon tube ( 81
A plurality of pieces of metal such as lead, which have a high X-ray absorption rate, are placed near the displacement means (9) attached to the tip of the Bourdon tube.
Calibrate the absolute displacement positions at multiple absolute temperature points, and calculate the positions lfx, y corresponding to the multiple □ positions, for example, θ°C, 100°C, and gGO'cK.

Place it at point 2. The metal strip thus serves as a temperature scale. flll is an X-ray generator and u21tf X-ray camera, and (11) and 04 constitute a detection means for detecting the position of the displacement means (91) in a non-contact manner.

Next, the operation of the above embodiment will be explained. Tubular metal sealed container f
A gas having a relatively large coefficient of thermal expansion coefficient (
Attach the metal container (6) connected to the Bourdon tube (8) in which 7) is sealed. In this state, using the detection means 1ll) and H consisting of an X-ray fluoroscope, detect the tubular container 11.
) From the outside, look through the metal piece Ua that is fixedly attached and serves as a temperature scale, and the metal displacement means (9) fitted at the tip of the Jilton tube (81), and find 4 degrees from their relative positions. In the embodiment shown in FIG. 2, it is possible to detect a contact abnormality in the conductor connection portion 14) based on this temperature. That is, if the temperature determined from the relative position id is low and current is flowing through the high voltage conductor (3) and the connection part (4), it can be said that the connection of the connection part (4) is normal. If there is a high degree of inaccuracy in correspondence, it becomes possible to determine that the contact of the connecting portion 141 is Sll fabric or close to normal, and the condition of the connecting portion can be easily known.

In the above embodiment, a fixed metal piece (l) is used for absolute temperature detection.
σ and the displacement means (9) consisting of a movable metal piece were mainly explained using lead, but if the absorption rate (transmittance) of X-rays etc. is relatively different compared to the surrounding materials, it should be limited to lead. There's no need. Next, the thermal expansion of the sealed gas (7) was replaced by the deformation of the Bourdon tube (81), but instead of the Bourdon tube +81, a device made of a flexible metal or other material such as a bellows may be used.

In short, any device that changes its position in response to temperature may be used. Furthermore, although gas is used as the sealing material, the same effect can be obtained by using a liquid with a high tAQI tension or by using a material such as a bimetal without using a fluid.

Furthermore, although the present invention has been described with reference to the case where it is used to detect the temperature of a part that comes into contact with a conductor, it can also be used for non-contact temperature measurement inside a container even if it is not related to a conductor.

As described above, the present invention has the advantage that the temperature inside the container can be detected without needing to touch the needles using a simple device.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway sectional view showing the main parts of a general gas-insulated electric device, and FIG. 2 is a sectional view showing an embodiment of the present invention. In the figure, 111 is a container, 141 is a conductor connection part, (91 is a displacement means, (II), 0 odor is a detection device. In M, the same reference numerals indicate the same parts. Agent Shin Kuzuno -

Claims (1)

[Claims] A displacement means that is housed in a predetermined part of the container and displaces in response to the temperature of the predetermined part, and a detection means that detects the position of the displacement means from the outside of the container without contact; A temperature detection device in a container, characterized in that the temperature inside the container is detected depending on the position.