JP5944179B2 - Valve status detection device - Google Patents

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

In the above-described prior art valve operation state detection device, when the operation state detection sensor is attached to the detected portion of the valve, the operation state detection sensor rotates together with the U bolt and nut. There is a problem that it is difficult to mount due to displacement.

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 is that an operating state detection sensor abutted on a detected part and an operating state detection sensor are connected and a pair of insertions are made. A holding member which is provided with a hole and is located on one side of the detected part, and a pair of insertion holes provided on the upper wall with a substantially U-shaped cross section having an upper wall and both side walls located on the opposite side of the detected part and a pair A sandwiching member in which a flat portion that abuts against the flat portion of the prism of the detected portion is formed between the insertion holes of the two, and a substantially cross-sectional groove portion that abuts on both sides of the curved portion of the round column of the detected portion is formed on both side walls And a pair of insertion holes of the clamping member and a pair of insertion holes of the holding member, a U-bolt into which both legs are inserted, and a pair of nuts attached to both the legs of the U-bolt. It is in a kind of operating state detection device.

The operation state detecting device for valves according to the present invention includes a pair of insertion holes provided in the upper wall and a pair of insertion holes provided in the upper wall with a sandwiching member positioned on the opposite surface of the detected portion and having an upper wall and both side walls. Between the insertion holes, a flat portion that contacts the flat portion of the prism of the detected portion is formed, and a substantially cross-sectional groove that contacts both sides of the curved portion of the round column of the detected portion is formed on both side walls. Since the contact area between the detected part and the clamping member can be increased, the sensor for detecting the operating state can be prevented from rotating or shifting with the U-bolt and nut, and the sensor for detecting the operating state can be easily applied to the detected part. This produces an excellent effect that it can be attached to.

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 substantially U-shaped cross section having an upper wall 4a and both side walls 4b. The lower member 3a made of an external thread of the sensor 3 for detecting the operating state is screwed and fixed to a connecting hole 4c made of an internal thread provided in the center of the upper wall 4a 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 hole 4c of the upper wall 4a of the holding member 4. A cutout 4e communicating with one insertion hole 4d is provided on the upper wall 4a or one side wall 4b 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 is positioned in one insertion hole 4 d of the holding member 4 through one leg 6 a through the notch 4 e of the holding member 4. Can be made. 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 Operation | movement state detection apparatus 3 Sensor 4 for operation | movement state detection Holding member 4a Upper wall 4b Both-side wall 4c Connection hole 4d A pair of insertion hole 4e Notch part 5 Clamping member 5a Upper wall 5b Both-side wall 5c Front side surface 5d Flat surface 5e Back side surface 5f Cross-sectional schematic groove portion 5g A pair of insertion holes 6 U bolts 6a Both legs 7 A pair of nuts 8 A pair of washers

Claims (1)

A sensor for detecting an operating state that is in contact with a detected portion of a prism or a round column, a holding member to which the sensor for detecting the operating state is connected and a pair of insertion holes are provided and located on one side of the detected portion; When the cross section having an upper wall and both side walls located on the opposite surface of the detected portion is substantially U-shaped and a pair of insertion holes are provided in the upper wall, and the detected portion is a prismatic column between the pair of insertion holes, When a flat surface portion is formed to contact the flat surface portion and the detected portions are round pillars on both side walls, a sandwiching member formed with a substantially cross-sectionally groove-shaped groove portion that contacts both sides of the curved surface portion of the round pillar, and a pair of sandwiching members inserted An operating state detection device for valves, comprising: a U bolt into which both leg portions are inserted into a pair of insertion holes of the hole and the holding member; and a pair of nuts attached to both leg portions of the U bolt.

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