JP2001330514A - Bimetal type temperature indicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bimetal type temperature indicator allowing visual temperature confirmation from a remote distance and capable of being used under a severe weather condition. SOLUTION: A bimetal connecting body 3 comprising a plurality of fork-like bimetals 2 interconnected at their ends is stored in a case 4, one end of the bimetal connecting body 3 is fixed to the case 4, a temperature indicating member 5 movable in the case 4 is mounted to the other end, the case 4 is provided with a temperature indicating part 6 for indicating a temperature based on the visible amount of the temperature indicating member 5, and a temperature of a temperature measured part can be confirmed from the temperature indicating part 6 based on the visible amount of the temperature indicating member 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bimetallic temperature indicator used for monitoring the temperature.

[0002]

2. Description of the Related Art Temperature display of a portion requiring temperature control includes:
Temperature indicators having various mechanisms are used according to the purpose of the display and the conditions of the equipment to be attached.
In the case of measuring and monitoring the temperature of power transmission equipment and substation equipment, a temperature indicator that measures the temperature by mounting it at a high place allows the user to visually check the temperature from a distance in the air, such as on the ground or by a helicopter. Is required.

[0003]

By the way, there is no conventional temperature indicator having a display property that allows the user to visually confirm the temperature from a distance as described above.
Since the temperature indicator used in such places is used under severe weather conditions, a mechanism capable of withstanding the temperature indicator is required.

It is an object of the present invention to provide a bimetallic temperature indicator that can visually confirm the temperature from a distance and can withstand use under severe weather conditions.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a case in which a bimetal connector in which a plurality of bifurcated bimetals are sequentially connected at an end is housed in a case,
One end of this bimetal connector was fixed to the case, and a temperature display member that was movable in the case was attached to the other end, and the case was provided with a temperature display section for indicating the temperature by the amount that the temperature display member could see. The configuration is adopted.

In the present invention, a maximum temperature display member which moves in the case by being pushed by the tip of the temperature display member in the case may be provided, or the bimetal connector may be provided with a plurality of bifurcated bimetals. Can be formed by alternately arranging bifurcated directions and sequentially connecting the ends.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, a bimetallic temperature indicator 1 comprises a bimetallic connector 3 in which a plurality of bifurcated bimetals 2 are sequentially connected at their ends, and a case accommodating the bimetallic connector 3. 4 and a plate-shaped temperature display member 5 which is housed in the case 4 so as to be movable and moves by expansion and contraction of the bimetallic connector 3.

The bimetal 2 is, as shown in FIG.
Two metal plates having different coefficients of thermal expansion were laminated, and this was bent into a bifurcated shape such as a U-shape or a V-shape such that the outside was a low-expansion metal plate 2a and the inside was a high-expansion metal plate 2b. The bimetal connector 3 is formed by using a plurality of bimetals 2 and sequentially connecting the ends so that the directions of the U-shape and the V-shape are alternately arranged.

The bimetal 2 has a U-shaped or V-shaped gap between both ends due to a difference in expansion coefficient between the low expansion metal plate 2a and the high expansion metal plate 2b due to a change in ambient temperature. Specifically, when the ambient temperature increases, the interval between both ends increases, and when the ambient temperature decreases, the interval between both ends decreases, and a plurality of bimetals 2 that move like this are used.
If the ends are sequentially connected in such a manner that the U-shaped or V-shaped directions are alternately arranged, the change in the interval between the bimetals 2 becomes a linear motion along the connection direction of the bimetals 2, Accordingly, the bimetallic connector 3 linearly expands and contracts by adding the change in the interval between the bimetals 2 by the number of connections of the bimetal 2. For this reason, bimetal 2
By increasing or decreasing the number of connections, the linear expansion / contraction stroke of the bimetallic connector 3 can be selected.

The case 4 is formed as a long container capable of storing the bimetallic connector 3 and the temperature indicating member 5 connected to the end of the connector 3.
Is arranged so that the expansion and contraction direction is along the length direction of the case 4,
While fixing one end to the end inside the case 4,
A temperature display member 5 is attached to the other end that is free in the expansion and contraction direction.

The temperature indicating member 5 is fitted so as to be movable in the longitudinal direction of the case 4 and moves integrally with the expansion and contraction of the bimetallic connector 3, so that the temperature indicating member 5 can be moved to the extent corresponding to the expansion and contraction stroke of the bimetal connector 3. It has a length and is provided with a conspicuous color such as red that can be seen from a distance.

The case 4 is made of a material such as various metals, resins, and glasses having weather resistance and heat conductivity, and has a structure capable of enclosing the bimetal connector 3 and the temperature display member 5 therein. The temperature display member 5 has a length capable of moving a stroke corresponding to the expansion / contraction stroke of the bimetallic connector 3, and one surface of a portion where the temperature display member 5 moves includes:
A temperature display section 6 is provided for displaying the temperature in an amount by which the temperature display member 5 can be seen from the outside. Therefore, case 4
The part other than the temperature display part 6 is opaque.

The temperature display section 6 is formed by, for example, closing a long window hole provided in the case 4 with a transparent member such as glass, and moving the temperature display member 5 which is moved by expansion and contraction of the bimetal connector 3 to the window. It will be visible from the outside at the hole.

The relationship between the temperature display member 5 and the temperature display section 6 is that when the ambient temperature is low and the bimetallic connector 3 is contracted, the temperature display member 5 is at a position hidden from the temperature display section 6 and When the temperature rises and the bimetal connector 3 extends, the temperature display member 5 can be seen from the end of the temperature display section 6 by the amount of the extension, and accordingly, the temperature display member 5 is proportional to the change in temperature. The amount by which the temperature display member 5 can be seen differs, and the higher the ambient temperature, the more the amount of the temperature display member 5 that can be seen. Therefore, the level of the temperature can be confirmed by the amount of the temperature display member 5 that the temperature display member 6 can see.

In the case shown in the figure, an upper limit temperature display 7 is provided at an end of the temperature display 6 opposite to the side where the temperature display member 5 protrudes and retracts.
Is provided so that it can be confirmed that the temperature of the measurement portion has reached the upper limit when the tip of the temperature display member 5 reaches the display section 7.

In the examples of FIGS. 1 and 2, the tip of the temperature display member 5 which moves when the temperature rises is pushed to the position on the temperature display portion 6 side where the temperature display member 5 protrudes and retracts inside the case 4. As a result, the case 4 is integrated with the temperature display member 5.
The maximum temperature display member 8 is provided to stop at the advanced position for the movement of the temperature display member 5 when the temperature is lowered, and the maximum value of the measured temperature is determined by looking at the position of the maximum temperature display member 8. It can be displayed.

Although the case 4 is formed in a flat rectangular container in the illustrated case, the present invention is not limited to such a structure. The case 4 accommodates the bimetal connector 3 and the temperature display member 5 therein, and Any structure may be used as long as the amount by which the temperature display member 5 can be seen on the display unit 6 changes.

The bimetallic temperature indicator 1 of the present invention comprises:
The above configuration, for example, has a structure applicable to a case where the temperature of a transmission line is measured and monitored. The back surface of the case 4 is placed on a portion where the temperature is to be measured. The temperature display unit 6 is mounted so that it can be seen from the ground or from the air.

When the temperature of the temperature measurement portion is low, the bimetal connector 3 is contracted, so that the temperature display member 6 is invisible or invisible in the temperature display section 6.

When the surface temperature of the temperature measuring portion rises, both ends of each bimetal 2 receiving the heat via the case 4 expand at both ends by an amount proportional to the rise in temperature, and the bimetal connector 3 separates each bimetal 2 from the bimetal 2. The temperature display member 5 moves in the case 4 by the amount of the expansion, and the moved amount of the temperature display member 5 appears on the temperature display section 6.

The bimetallic connector 3 extends in proportion to the rise in temperature of the temperature measuring portion, and the temperature display member 5 that moves by the amount of extension extends from the temperature display section 6 in proportion to the rise in temperature. Therefore, by confirming the amount of the temperature display member 5 visible from the ground or from the air, the temperature of the temperature measurement portion can be known from a remote position.

The use of the bimetallic temperature indicator 1 of the present invention is not limited to the above-described transmission line temperature measurement, but is widely used for parts requiring surface temperature measurement such as substation equipment. be able to.

[0024]

As described above, according to the present invention, a bimetal connector in which a plurality of bifurcated bimetals are sequentially connected at the ends is housed in a case, and one end of the bimetal connector is fixed to the case. At the other end, a temperature display member that can move inside the case is attached, and a temperature display section for viewing the temperature display member is provided in the case, so that the temperature display member moves in proportion to the temperature of the temperature measurement portion. By changing the amount of the temperature display member viewed from the temperature display section, the temperature of the temperature measurement portion can be easily and clearly known from a remote position.

Further, since the highest temperature display member which moves in the case by being pushed by the tip of the temperature display member in the case is provided, the maximum value of the measured temperature can be displayed, and the temperature can be controlled. It is valid.

Furthermore, since a plurality of bifurcated bimetals are connected at the ends to form a bimetal connector, the temperature display member is moved linearly, and the temperature change in the temperature measurement portion is displayed linearly. The temperature change can be visually confirmed, and by increasing or decreasing the number of bimetals, a linear display of temperature change can be selected under a wide range of conditions. By enclosing the body and the temperature display member in the case, it can withstand use under severe weather conditions.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the external shape of a bimetallic temperature indicator.

FIG. 2A is a cross-sectional plan view of a bimetallic temperature indicator, and FIG.

FIG. 3 is an enlarged plan view showing the structure of a bimetal connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bimetal type temperature display 2 Bimetal 3 Bimetal connection body 4 Case 5 Temperature display member 6 Temperature display part 7 Display part 8 Maximum temperature display member

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor, Hirohiko Hyoda 1-6 Izumo Honmachi, Higashiosaka City Inside Hyoda Keiki Kogyo Co., Ltd. (72) Inventor Tadayoshi Hamada 1-6 Izumo Ihoncho, Higashiosaka City Inside Hyoda Keiki Kogyo Co., Ltd. (72) Inventor Ichiro Matsubara 20 Itoda Kitagawara, Itami 2 Sumitomo Asahi Seiko Co., Ltd. 72 Inventor Haruhiko Sakamoto 20 Itoda, Kitagawara, Itami 2 Sumitomo Asahi Seiko Co., Ltd. (72) Inventor Eiji Kusabuka 20 Sumida Asahi Seiko Co., Ltd.

Claims (3)

[Claims] A bimetal connector in which a plurality of bifurcated bimetals are sequentially connected at an end is housed in a case, one end of the bimetal connector is fixed to the case, and the other end is movable in the case. A bimetallic temperature indicator, wherein a temperature indicator is attached to the case, and a temperature indicator is provided in the case to indicate the temperature in a visible amount of the temperature indicator. 2. The bimetal-type temperature indicator according to claim 1, wherein a maximum temperature indicator which moves in the case by being pushed by a tip of the temperature indicator is provided in the case. 3. The bimetal connector is formed by using a plurality of bifurcated bimetals, alternately disposing bifurcated directions, and sequentially connecting ends. Or the bimetallic temperature indicator according to 2.