JP3395037B2 - High and low temperature indicator of high temperature fluid piping - Google Patents

Description

Description: 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 display the temperature. 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 that 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-using equipment, and destroying equipment. Detecting is extremely important. 2. Description of the Related Art Japanese Unexamined Utility Model Publication No. Hei 3-7680 discloses an apparatus capable of indicating the level of 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] In the 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 effort to mount the shape memory alloy. There was such a problem. [0005] Further, since the shape memory alloy is mounted in a bare state, there is a problem that the object is carelessly hit and easily deformed and detached. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to make it possible to easily and quickly attach a temperature responsive member to the surface of a high-temperature fluid pipe, and to make it difficult for the temperature-responsive member to deform and come off. In order to solve the above-mentioned problems, a 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 a strip-shaped longitudinal clip.
Is fixed to the inner surface of the leaf spring clip and the other end is
Approaching or moving away from hot fluid piping
A temperature responsive member having a free end, a cap formed integrally with a leaf spring clip to cover the other end of the temperature responsive member, and a high temperature fluid pipe connected to the other end of the temperature responsive member. Away from
A window opened in the cap so that the tip of the other end of the temperature responsive member can enter and exit when pressed, and push two opposite sides of the leaf spring clip into engagement with the surface of the high temperature fluid pipe. A temperature indicator of the temperature of the high-temperature fluid pipe, wherein one end of the temperature responsive member is pressed against the surface of the high-temperature fluid pipe. DETAILED DESCRIPTION OF THE INVENTION height indicator of the temperature of the hot fluid pipe of the present invention, the length of the temperature responsive member strip shape on the inner surface of the leaf spring clip having three sides pressed against the surface of the high temperature fluid pipe
This leaf spring clip is fixed at one end in the hand direction.
The one end of the temperature responsive member is attached to the surface of the high temperature fluid pipe by pressing the two opposite sides of the high temperature fluid pipe so as to be fitted 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 by 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. Further, since the other end of the temperature responsive member is covered with a cap formed integrally with the leaf spring clip except for its tip, the temperature responsive member is hardly deformed and hard to come off. An embodiment showing a specific example of the above technical means will be described with reference to FIGS. 1 to 3. FIG. 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. The two sides that are opposed to each other are expanded and fitted to the steam pipe 1 so that the three sides are in pressure contact with 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. On the inner surface of the leaf spring clip 2, a thickness of 0.2
One end in the longitudinal direction of the temperature responsive member 3 made of a bimetal made of a strip having a thickness of about a millimeter is fixed by spot welding (at points 4 and 5). The right part of the temperature responsive member 3 from the center is closer to the steam pipe 1.
Or, it is a free end moving away from the steam pipe 1 , and its tip is bent upward by about 90 degrees. The tip is colored orange or red with a fluorescent color. At a high temperature, the temperature responsive member 3 approaches the steam pipe 1 flat except for the free end, as shown by a two-dot chain line in FIG.
The free end side as shown by the solid line is bent upward steam pipe
Move away from 1 . 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
Means that the free end side of the temperature responsive member 3 is
It has a window 7 through which the free end of the temperature responsive member 3 enters and exits when it moves away . 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 the condensate, the temperature of the steam pipe 1 is high,
Are flat except for the free end, and are located in the cap 6. If the steam trap falls into a state where drainage is impossible or insufficient, the temperature of the steam pipe 1 becomes low. Therefore, 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. As described above, in the high / low temperature indicator of the high temperature fluid pipe according to the present invention, the leaf spring clip having one end side of the temperature responsive member fixed to the inner surface is fitted to the surface of the high temperature fluid pipe. Thereby, the temperature responsive member can be easily and quickly attached to the surface of the high temperature fluid pipe. The other end of the temperature responsive member is integrated with the leaf spring clip except for the tip.
Since it is covered with the cap formed in the above, it can be hardly deformed and hardly come off.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a state where 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; [Description of Signs] 1 steam pipe 2 leaf spring clip 3 temperature responsive member 6 cap 7 window

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) G01K 13/02 G01K 11/00

Claims (1)

(57) [Claims 1] A leaf spring clip having three sides pressed against the surface of a high temperature fluid pipe, and a strip-shaped one end in a longitudinal direction.
High-temperature fluid piping fixed to the inner surface of the leaf spring clip and the other end
At the free end approaching or away from the hot fluid piping.
A temperature responsive member, and a cap formed integrally with the leaf spring clip to cover the other end of the temperature responsive member, the temperature
A window opened in a cap for the tip of the other end of the temperature responsive member to enter and exit when the other end of the responsive member moves away from the high-temperature fluid pipe ;
A high-temperature fluid piping temperature indicator, wherein one end of the temperature responsive member is pressed against the surface of the high-temperature fluid pipe so as to be attached by pressing two sides of the high-temperature fluid pipe to fit the surface of the high-temperature fluid pipe.