JP5220504B2 - Valve status detection device - Google Patents

Description

  The present invention relates to an operating state detecting device for valves represented by valves and steam traps for various uses.

  Various types of conventional operation state detection devices for valves have been proposed. For example, in the case of an operation state detection device for a steam trap, there is one disclosed in Japanese Patent Laid-Open No. 10-227686. In this case, a sensor unit for detecting an operating state is attached to the casing using a connection structure between a trap body and a trap lid constituting the casing of the steam trap. That is, a sensor unit is constituted by a vibration sensor having a bolt part at the tip and a temperature sensor attached to the head of the bolt part of the vibration sensor, and the bolt part of the vibration sensor is connected to the trap body and the trap lid. Instead, the sensor unit is attached to the casing by screwing it into the bolt hole of the connecting bolt, and in this attached state, the vibration and temperature of the casing indicating the operating state of the steam trap are detected by the vibration sensor and the temperature sensor. Yes.

In the above-described prior art steam trap operating state detection device, the sensor unit is attached in only one direction upward from the upper part of the steam trap. If it is narrow, there is a problem that the sensor unit cannot be attached to the steam trap.
JP-A-10-227686

  Therefore, the technical problem of the present invention is to provide an operating state detection device for valves that can attach a sensor to the valves even when the space in one direction from the valves at the place where the valves are installed is narrow. .

The technical means of the present invention taken to solve the above technical problem includes a valve having an inlet connecting flange, and a drain discharge pipe in which the inlet connecting flange of the valves is connected by a bolt / nut connecting member. A valve comprising: a connection flange; a sensor attachment member interposed between a connection flange of a valve inlet connection flange or a drain discharge pipe and a coupling member ; and a sensor for detecting an operating state attached to the sensor attachment member . in the operating state detecting device, inlet connecting flange of the valves to the sensor mounting member in a state in which the sensor for operating state detection attached to the sensor mounting member is directed in a desired direction, such as upward or downward direction or the right direction or left direction Alternatively the inlet tangent of the valves is interposed in the connection flange of the drain discharge pipe between connection flanges and two or more coupling members of the drain discharge pipe Flange is in the operating state detecting apparatus for the valves, characterized in that it is connected by the connecting member.

The operation state detecting device for valves according to the present invention is configured so that the sensor for detecting the operation state attached to the sensor attachment member is directed in a desired direction such as upward, downward, rightward, leftward. Since the valve inlet connection flange or the drain discharge pipe connection flange and the two or more connecting members are interposed between the drain discharge pipe connection flange and the valve inlet connection flange by the connecting member. Even if the space in one direction from the valves at the place where the valves are installed is narrow, the sensor mounting member is connected to the valve inlet connection flange or the drain discharge pipe connection flange so that the sensor for detecting the operation state is directed in the other direction. By interposing between the two or more connecting members , an excellent effect that the sensor can be attached to the valves is produced.

The present invention, inlet connecting flange or drain of the valves to the sensor mounting member in a state in which the sensor for operating state detection attached to the sensor mounting member is directed in a desired direction, such as upward or downward direction or the right direction or left direction An inlet connection flange of valves is connected to the connection flange of the drain discharge pipe by a connection member interposed between the connection flange of the discharge pipe and two or more connection members . Therefore, for example, when the space upward from the valves at the place where the valves are installed is narrow, the sensor for detecting the operating state is directed in a direction other than the upward direction such as the downward direction, the right direction, or the left direction. The sensor can be attached to the valves by interposing the mounting member between the inlet connecting flange of the valves or the connecting flange of the drain discharge pipe and the two or more connecting members .

  An embodiment showing a specific example of the above technical means will be described (see FIGS. 1 and 2). FIG. 1 is a cross-sectional view of a float steam trap according to an embodiment of the present invention, and FIG. 2 is a left side view of FIG. The casing of the steam trap is composed of a trap body 1 and a trap lid 3 connected to the trap body 1 with bolts 2 and forms a valve chamber 4 therein. The trap body 1 has an inlet connection flange 5 connected to the connection flange A of the drain discharge pipe from the steam using device, and an outlet connection flange 6 connected to the drain discharge pipe to the discharge point. 5a is formed, and a trap outlet 6a for discharging the drain W is formed in the outlet connection flange 6. The valve chamber 4 always communicates with the trap inlet 5 a and also communicates with the trap outlet 6 a through the valve port 7 provided in the trap lid 3.

  The valve chamber 4 is internally provided with a spherical float 8 that opens and closes the valve port 7 by the vertical movement accompanying the fluctuation of the water level of the drain W, and in the normal use state in which the drain W flows together with the steam S from the trap inlet 5a. In the state where 7 is submerged in the drain W, the degree of opening is adjusted by the float 8 according to the amount of inflow of the drain, so that only the drain W passes through the valve port 7 to the trap outlet 6a in a state where leakage of the steam S is prevented. Continuously discharged. Further, when the drain W does not flow from the trap inlet 5a, the valve port 7 is blocked by the float 8 in a state where the drain port W is submerged in the lowered water level, and the steam S leaks due to the blockage of the valve port 7 under the submerged water. Is definitely prevented.

  In the upper part of the valve chamber 4, a filter 9 is attached to the ceiling wall of the trap body 1 for catching foreign matter that causes the opening / closing operation failure of the valve port 7, and the drain W and the steam S pass through the filter 9 through the trap inlet 5 a. Into the valve chamber 4. A bimetal 10 for discharging low-temperature air or low-temperature water is attached to the bottom wall of the trap lid 3 at the bottom of the valve chamber 4. When the steam S or the high-temperature drain W flows into the valve chamber 4 and the valve chamber 4 is at a high temperature, the bimetal 10 is in a contraction / refractive state where the tip is not in contact with the seated float 8. Occlusion. On the other hand, when low-temperature air or low-temperature water flows into the valve chamber 4 and the valve chamber 4 is at a low temperature, the float 8 is pushed up to push up the seated float 8 at the tip, and the float 8 is forcibly pushed up to open the valve port 7. Thus, low-temperature air or low-temperature water is discharged through the valve port 7 to the trap outlet 6a.

  The inlet connection flange 5 is connected to the connection flange A of the drain discharge pipe by connecting members B1, B2, B3, B4 of bolts and nuts. At this time, the sensor mounting member 11 is interposed between the inlet connecting flange 5 and the heads or nuts of the bolts of the connecting members B1 and B2. The sensor attachment member 11 can be interposed between the connection flange A of the drain discharge pipe and the heads or nuts of the bolts of the connection members B1 and B2. The sensor attachment member 11 can be interposed between the flanges by one connecting member, but can be prevented from rotating by being interposed between the flanges by two or more connecting members. When viewed from the side, the sensor mounting member 11 has an approximately inverted Y shape, the upper end is bent by approximately 90 degrees, and has an approximately L-shaped cross section. The threaded portions of the connecting members B1, B2, B3, and B4 pass through the bolt head and nut. The hole has a smaller diameter than the outer diameter. A sensor 12 for detecting an operating state is attached to the sensor attachment member 11. The sensor 12 includes a vibration sensor 12a and a temperature sensor 12b attached to the tip of the vibration sensor 12a. The sensor 12 can be composed of only the vibration sensor 12a, can be composed of only the temperature sensor 12b, or can be composed of the vibration sensor 12a and the temperature sensor 12b. By detecting the vibration and temperature of the trap body 1 indicating the operating state of the steam trap by the vibration sensor 12a and the temperature sensor 12b, and sending the detection signal as an output signal to the determination device by the cable 13 (or wireless transmission means) The operation state of the steam trap is determined in the determination device. The sensor 12 is a location where steam is present when the steam trap is operating normally, and is a location where drain is present when the steam trap is causing drain discharge clogging. Alternatively, by detecting the vibration or temperature of the inlet connecting flange 5 or the inlet pipe portion between the inlet connecting flange 5 and the valve chamber 4, the steam trap is operating normally by the detection signal from the temperature sensor 12b or the drain is clogged. Can be accurately determined.

1 and 2 show the sensor trapping member 11 interposed between the inlet connecting flange 5 and the connecting members B1 and B2 in a state where the sensor 12 is directed upward as indicated by the solid line. When the space upward from the steam trap at the installation location is narrow, the sensor mounting member 11 is connected to the flange and the connecting member B3 so that the sensor 12 is directed downward, rightward, or leftward as indicated by the dotted line. It is interposed between B4 or between the flange and the connecting members B2 and B4 or between the flange and the connecting members B1 and B3.

Sectional drawing of the float type steam trap which is an Example of this invention. The left view of the float type steam trap of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Trap body 2 Bolt 3 Trap cover body 4 Valve chamber 5 Inlet connection flange 5a Trap inlet 6 Outlet connection flange 6a Trap outlet 7 Valve port 8 Float 9 Filter 10 Bimetal 11 Sensor mounting member 12 Sensor 12a Vibration sensor 12b Temperature sensor 13 Cable A Connection flange B1, B2, B3, B4 connecting member of drain discharge pipe

Claims (1)

Valves having inlet connection flanges, connection flanges of drain discharge pipes in which the inlet connection flanges of valves are connected by connecting members of bolts and nuts, connection flanges and connection members of valve inlet connection flanges or drain discharge pipes An operation state detection device for a valve comprising a sensor attachment member interposed between and an operation state detection sensor attached to the sensor attachment member. The sensor mounting member is interposed between the inlet connecting flange of the valves or the connecting flange of the drain discharge pipe and the two or more connecting members so that the sensor mounting member is directed in a desired direction such as the direction, the downward direction, the right direction, or the left direction. the valves operate like, characterized in that the inlet connection flange of the valves in the connecting flange of the drainage pipe is connected by a connecting member Detection device.

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