JPH11326075A - Temperature level indicator for high-temperature fluid piping - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fit a temperature-responsive member to the surface of a steam piping easily and quickly. SOLUTION: This temperature level indicator is provided with a plate spring clip 2 having three sides pressed to the surface of a steam piping 1 and a temperature-responsive member 3 fixed with one end side to the inner face of the plate spring clip 2. One end side of the temperature-responsive member 3 is pressed and fitted to the surface of the steam piping 1 by fitting the plate spring clip 2 to the surface of the steam piping 1. The temperature-responsive member 3 is fitted to the surface of the steam piping 1 easily and quickly by the spring function of the plate spring clip 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus which is attached to a high-temperature fluid pipe such as steam or hot water to indicate the temperature level. Knowing the temperature of the high-temperature fluid piping not only helps to prevent burns, but also makes it possible to know the operating states of the devices connected to the piping and the operating states of the valves.

For example, a steam trap is a valve which is attached to a steam pipe and automatically discharges condensate generated therein. If the temperature of pipes before and after the steam trap is low, drainage is impossible or insufficient. Can be determined. If the steam trap is incapable of draining or is in a state of insufficient drainage, condensate will remain on the primary side, causing water hammer, reducing the operating efficiency of steam-powered equipment, and destroying equipment. Detecting is extremely important.

[0003]

2. Description of the Related Art Japanese Unexamined Utility Model Publication No. Hei 3-7680 discloses an apparatus capable of indicating the temperature of a high-temperature fluid pipe. In this case, a shape memory alloy is fixed to the surface of a high-temperature fluid pipe with screws.

[0004]

According to the above-mentioned prior art, a hole for fixing with a screw must be formed in the surface of the high-temperature fluid pipe, which is dangerous and requires time and labor to attach the shape memory alloy. There was a problem.

Accordingly, it is an object of the present invention to enable a temperature responsive member to be easily and quickly mounted on the surface of a high temperature fluid pipe.

[0006]

In order to solve the above-mentioned problems, the means of the present invention is to provide a leaf spring clip having three sides pressed against the surface of a high-temperature fluid pipe, and an inner surface of the leaf spring clip having one end. A high-temperature fluid pipe, comprising: a fixed temperature responsive member fixed to the surface of the high-temperature fluid pipe by fitting a leaf spring clip to a surface of the high-temperature fluid pipe. On the temperature level indicator.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The temperature level indicator of a high temperature fluid pipe according to the present invention has one end side of a temperature responsive member fixed to an inner surface of a leaf spring clip having three sides pressed against the surface of the high temperature fluid pipe. By fitting the leaf spring clip to the surface of the high-temperature fluid pipe, one end of the temperature-responsive member is pressed against and attached to the surface of the high-temperature fluid pipe. A bimetal or a shape memory alloy can be used for the temperature responsive member. Since the leaf spring clip is attached to the surface of the high-temperature fluid pipe with one touch by its spring function, the temperature-responsive member fixed to the inner surface of the leaf spring clip is easily and quickly attached to the surface of the high-temperature fluid pipe.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment showing a specific example of the above technical means will be described with reference to FIGS. FIG. 1 is a perspective view showing a state in which a temperature level indicator according to the present invention is attached to a steam pipe, and FIG. 2 is a cross-sectional view showing a state in which a temperature level indicator according to the present invention is attached to a steam pipe. FIG. 3 is a sectional view taken along line AA of FIG.

Reference numeral 1 denotes a steam pipe, and a steam trap (not shown) is connected to the downstream side of the steam pipe on the right side of the paper surface. A leaf spring clip 2 is fitted to the surface of the steam pipe 1 and attached. The leaf spring clip 2 has three sides that are in pressure contact with the surface of the steam pipe 1, and the three sides are pressed into contact with the steam pipe 1 by pushing and spreading the two opposite sides to fit the steam pipe 1. In addition, the leaf spring clip 2 expands at least one of the two opposing sides to form the steam pipe 1.
Easily and quickly.

The inner surface of the leaf spring clip 2 has a thickness of 0.2
One end side of the temperature responsive member 3 made of a bimetal made of a thin plate having a shape of a millimeter strip is fixed by spot welding (at locations of reference numerals 4 and 5). The right side portion from the center of the temperature responsive member 3 is a free end, and its tip is approximately 90
It is bent upward. The tip is colored orange or red with a fluorescent color. At a high temperature, the temperature responsive member 3 is flat except for a free end side as shown by a two-dot chain line in FIG. 2, and at a low temperature, the free end side is bent upward as shown by a solid line in FIG.

A cap 6 covering the free end side of the temperature responsive member 3 is formed integrally with the leaf spring clip 2. Cap 6
Has a window 7 on the upper wall through which the free end of the temperature responsive member 3 enters and exits. At a high temperature, the free end side tip of the temperature responsive member 3 is located in the cap 6, and at a low temperature, the free end side tip protrudes from the window 7 of the cap 6.

If the steam trap normally discharges condensate, the temperature of the steam pipe 1 is high,
Are flat except for the free end, and are located in the cap 6. When the steam trap becomes incapable of draining or in a state of insufficient drainage, the temperature of the steam pipe 1 becomes low, so that the free end side of the temperature responsive member 3 is bent upward, and its tip projects from the window 7 of the cap 6. This allows
It is possible to check whether the steam trap cannot be drained or the drainage is insufficient.

[0013]

As described above, according to the present invention, the temperature responsive member is attached to the surface of the high-temperature fluid pipe by fitting a leaf spring clip having one end of the temperature responsive member fixed to the inner surface to the surface of the high-temperature fluid pipe. It is possible to provide a high-low indicator of the temperature of the high-temperature fluid pipe which can be easily and quickly mounted on the pipe.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a temperature level indicator according to the present invention is attached to a steam pipe.

FIG. 2 is a cross-sectional view showing a state where a temperature level indicator according to the present invention is attached to a steam pipe.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Steam piping 2 Leaf spring clip 3 Temperature responsive member 6 Cap 7 Window

Claims (1)

[Claims] 1. A leaf spring clip having three sides pressed against the surface of a high temperature fluid pipe, and a temperature responsive member having one end fixed to an inner surface of the leaf spring clip, wherein the leaf spring clip is attached to the surface of the high temperature fluid pipe. A temperature indicator of the temperature of the high-temperature fluid pipe, wherein one end side of the temperature-responsive member is pressed against the surface of the high-temperature fluid pipe to be attached.