JP2013170690A - Device for detecting operation state of valves - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for detecting an operation state of valves, the device that facilitates attaching a sensor for operating state detection to a part to be detected.SOLUTION: An operation state detecting device 2 includes: a sensor 3 for operating state detection, which is abutted to an entrance 1 of a steam trap which is a part to be detected; a holding member 4 that is roughly a square shape in a cross section having an upper wall 4a, both sidewalls 4b and a lower wall 4f, has the sensor 3 for the operating state detection connected to the upper wall 4a and the lower wall 4f, is also provided with a pair of insertion holes 4d, and is provided with a notched part 4e in communication with one insertion hole 4d and for inserting one leg part 6a of a U bolt 6 on the upper wall 4a or one sidewall 4b or the lower wall 4f; the U bolt 6 whose both leg parts 6a are inserted to the pair of insertion holes 4d on the upper wall 4a and the lower wall 4f of the holding member 4; and a pair of nuts 7 attached to both leg parts of the U bolt 6.

Description

The present invention relates to a valve operation state detection device that is attached to valves for various uses, such as valves and steam traps, and detects the operation state of the valves.

Various types of operation state detection devices for valves have been proposed. For example, in the case of an operation state detection device for a steam trap as a valve, a device disclosed in Japanese Patent Application Laid-Open No. 2000-121425. There is. What is disclosed here is that a pair of insertion holes is provided and both legs are inserted into a pair of insertion holes of an operation state detection sensor that is in contact with a detected portion of a steam trap and a sensor for operation state detection. And a pair of nuts attached to both leg portions of the U bolt.

Japanese Patent Laid-Open No. 2000-121425

The above-described valve operating state detection device of the prior art has a problem that it is difficult to install because the nut is easily dropped when the sensor for detecting the operating state is attached to the detected part of the valve. There was a point.

Therefore, the technical problem of the present invention is to provide an operating state detecting device for valves, which can easily attach an operating state detecting sensor to a detected portion.

The technical means of the present invention taken in order to solve the above technical problem includes a sensor for detecting an operating state in contact with a detected portion, an upper wall, both side walls, and a lower wall. A sensor for detecting an operating state is connected to the upper wall and the lower wall, and a pair of insertion holes are provided, and one leg of the U bolt communicates with the one insertion hole on the upper wall or one side wall or lower wall. A holding member provided with a notch for inserting a U-bolt, a U-bolt in which both legs are inserted into a pair of insertion holes in the upper wall and lower wall of the holding member, and a pair of nuts attached to both legs of the U-bolt And an operating state detection device for valves.

The valve operating state detection device according to the present invention has a holding member having an upper wall, both side walls, and a lower wall. An insertion hole is provided, and a notch portion for inserting one leg portion of the U-bolt is provided in the upper wall or one side wall or lower wall, and the holding member and a pair of nuts are provided. Since one leg portion of the U-bolt to which the screw is attached can be positioned in one insertion hole of the upper wall and the lower wall of the holding member through the notch portion of the holding member, it is possible to prevent the nut from falling off and The sensor for detecting the operating state can be easily attached, and the excellent effect that the deformation of the notch can be prevented by the lower wall is produced.

It is sectional drawing of the operating state detection apparatus of the valves concerning embodiment of this invention. It is sectional drawing of the operating state detection apparatus of the valves concerning embodiment of this invention which made the clamping member of FIG. 1 upside down. It is a perspective view of the holding member of FIG. It is a perspective view of the clamping member of FIG. It is a perspective view of the clamping member of FIG.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. An operating state detection device 2 is attached to an inlet 1 which is a detected portion of a steam trap as a valve. The operation state detection device 2 includes an operation state detection sensor 3, a holding member 4 for attaching the operation state detection sensor 3 to the steam trap inlet 1, a clamping member 5, a U bolt 6, a pair of nuts 7, and a pair of washers. 8 is provided. The operation state detection sensor 3 is constituted by a vibration sensor or a temperature sensor.

The holding member 4 is formed in a generally rectangular shape in cross section having an upper wall 4a, side walls 4b, and a lower wall 4f. The holding member 4 is connected by fixing and fixing a lower portion 3a made of an external thread of the sensor 3 for detecting the operating state to a connection hole 4c made of an internal thread provided in the center of the upper wall 4a and the lower wall 4f of the holding member 4. The lower end of the sensor 3 for detecting the operating state is in contact with the inlet 1 of the steam trap. A pair of elongated insertion holes 4d for inserting both legs 6a of the U-bolts 6 is provided on both sides of the connection holes 4c of the upper wall 4a and the lower wall 4f of the holding member 4. A cutout 4e communicating with one insertion hole 4d of the upper wall 4a and the lower wall 4f is provided on the upper wall 4a to the one side wall 4b to the lower wall 4f of the holding member 4. The U-bolt 6 to which the holding member 4, the holding member 5, the pair of washers 8 and the pair of nuts 7 are attached has one leg portion 6 a through the notch portion 4 e of the holding member 4 and the upper wall 4 a and the lower wall 4 f of the holding member 4. It can be located in one insertion hole 4d. The holding member 4 is located on one side of the inlet 1 of the steam trap.

The clamping member 5 is formed in a substantially U-shaped cross section having an upper wall 5a and both side walls 5b. The sandwiching member 5 forms a flat surface portion 5d on the front side surface 5c of the upper wall 5a with the surface abutting on the flat surface portion of the prism 1 of the steam trap inlet 1 roughened by knurling, and is opposite to the front side surface 5c of the upper wall 5a. A pair of generally cross-sectionally groove-shaped grooves 5f whose surfaces abutting on both sides of the curved surface portion of the round column of the inlet 1 of the steam trap are roughened by knurling. A pair of long hole-like insertion holes 5g for inserting both leg portions 6a of the U bolt 6 is provided on the upper wall 5a of the holding member 5. The clamping member 5 is located on the opposite side of the steam trap inlet 1.

As shown in FIG. 1, when the steam trap inlet 1 is a prism, both legs 6a of the U-bolt 6 are inserted into the pair of insertion holes 5g of the upper wall 5a of the sandwiching member 5 from the side walls 5b side of the sandwiching member 5. The operation is performed using a pair of insertion holes 4d of the holding member 4 in which both legs 6a of the U bolt 6 are inserted and a pair of nuts 7 are attached to both legs 6a of the U bolt 6 via a pair of washers 8. A state detection sensor 3 is attached in contact with the inlet 1 of the steam trap. As shown in FIG. 2, when the steam trap inlet 1 is a round pillar, both leg portions 6a of the U bolt 6 are inserted into the pair of insertion holes 5g of the upper wall 5a of the clamping member 5 from the upper wall 5a side of the clamping member 5. The operation is performed using a pair of insertion holes 4d of the holding member 4 in which both legs 6a of the U bolt 6 are inserted and a pair of nuts 7 are attached to both legs 6a of the U bolt 6 via a pair of washers 8. A state detection sensor 3 is attached in contact with the inlet 1 of the steam trap.

INDUSTRIAL APPLICABILITY The present invention can be used for a valve operation state detection device that is attached to valves for various uses, such as valves and steam traps, and detects the operation state of the valves.

DESCRIPTION OF SYMBOLS 1 Steam trap inlet 2 Operating state detection device 3 Operating state detection sensor 4 Holding member 4a Upper wall 4b Both side walls 4c Connection hole 4d A pair of insertion holes 4e Notch part 4f Lower wall 5 Clamping member 5a Upper wall 5b Both side walls 5c Front side surface 5d Flat surface portion 5e Back side surface 5f Cross-sectional schematic groove portion 5g A pair of insertion holes 6 U bolts 6a Both leg portions 7 A pair of nuts 8 A pair of washers

Claims (1)

A sensor for detecting an operating state that is in contact with the detected portion, and a pair of sensors for detecting the operating state are connected to the upper wall and the lower wall in a generally rectangular shape having an upper wall, both side walls, and a lower wall. And a holding member provided with a notch for inserting one leg of the U-bolt in communication with one insertion hole in the upper wall or one side wall or lower wall, and an upper wall of the holding member And a U-bolt in which both legs are inserted into the pair of insertion holes in the lower wall, and a pair of nuts attached to both legs of the U-bolt.

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