JP2010031920A - Operation state detecting device of valve components - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an operation state detecting device of valve components, capable of installing a sensor in the valve components, even when a space is narrow in one direction from the valve components in an installation place of the valve components. <P>SOLUTION: A casing of a float type steam trap is composed of a trap body 1 and a trap cover body 3 connected to this trap body 1 by a bolt 2. An upper connecting seat 11 projecting in the upper direction is formed on an upper surface of the trap body 1, and a right connecting seat 12 projecting in the right direction is formed on a right side surface of the trap body 1, and a left connecting seat 13 projecting in the left direction is formed on a left side surface of the trap body 1. The sensor 14 is installed on the upper connecting seat 11 by a box nut 15 as indicated by a continuous line. When the space is narrow in the upper direction from the steam trap in the installation place of the steam trap, the sensor 14 is not installed on the upper connecting seat 11, and the sensor 14 is installed on the right connecting seat 12 or installed on the left connecting seat 13 by the box nut 15 as indicated by a dotted line. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a device for detecting an operating state of valves represented by various applications such as valves and steam traps.

  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 operation 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 in order to solve the above technical problem is to form a plurality of coupling seats projecting in different directions on the outer surface of the valve casing, and from among the plurality of coupling seats. An operation state detection device for valves is provided with an operation state detection sensor attached to one connecting seat.

  The valve operating state detection device of the present invention forms a plurality of connecting seats projecting in different directions on the outer surface of a valve casing, and detects the operating state from one of the plurality of connecting seats. Therefore, even if the space in the one direction from the valves at the place where the valves are installed is narrow, the sensor can be attached to the connecting seat that protrudes in the other direction. Arise.

  The present invention forms at least two or more connecting seats projecting in different directions such as upward, downward, rightward or leftward on the outer surface of the casing of the valves, A sensor for detecting an operating state is attached to one connecting seat from the inside. Therefore, for example, when two connection seats of an upper connection seat that protrudes upward and a right connection seat that protrudes rightward are formed, the space upward from the valves at the place where the valves are installed is narrow. In this case, the sensor can be attached to the right connecting seat, and the sensor can be attached to the upper connecting seat when the space from the valves to the right is narrow. In this manner, even when the space in one direction from the valves at the place where the valves are installed is narrow, the sensor can be attached to the coupling seat that protrudes in the other direction.

  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 right 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 is formed with a trap inlet 5 for connecting a drain discharge pipe from the steam using device and a trap outlet 6 for discharging the drain W. The valve chamber 4 always communicates with the trap inlet 5 and communicates with the trap outlet 6 through a 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 associated with 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 5 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 to the trap outlet 6 through the valve port 7 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 5, the valve port 7 is closed by the float 8 in a state where the drain port W is submerged in the water level, and the steam S leaks due to the blockage of the valve port 7 under the water submergence. Is definitely prevented.

  Above the valve chamber 4, a filter 9 is attached to the ceiling wall of the trap body 1 for trapping foreign matter that causes the opening / closing operation failure of the valve port 7, and drain W and steam S pass through the filter 9 through the trap inlet 5. 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 contracted and bent state where the tip is not in contact with the float 8 in the seated state, and the valve port 7 formed by the 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 and the float 8 is forcibly pushed up to open the valve port 7. Thus, low-temperature air or low-temperature water is discharged to the trap outlet 6 through the valve port 7.

  An upper connection seat 11 protruding upward is formed on the upper surface of the trap body 1, a right connection seat 12 protruding rightward is formed on the right side surface of the trap body 1, and the trap body 1 is formed on the left side surface of the trap body 1. A left connecting seat 13 protruding leftward is formed. The upper connecting seat 11, the right connecting seat 12 and the left connecting seat 13 are respectively coupled with an insertion hole for inserting the tip of the sensor 14 for detecting the operating state, and a female screw portion of the cap nut 15 for attaching the sensor 14. And a male screw portion to be formed. The sensor 14 includes a vibration sensor 14a and a temperature sensor 14b attached to the tip of the vibration sensor 14a. The sensor 14 can be composed of only the vibration sensor 14a, can be composed of only the temperature sensor 14b, or can be composed of the vibration sensor 14a and the temperature sensor 14b. By detecting the vibration and temperature of the trap body 1 indicating the operating state of the steam trap with the vibration sensor 14a and the temperature sensor 14b, and sending the detection signal as an output signal to the determination device via the cable 16 (or wireless transmission means), The operation state of the steam trap is determined in the determination device. The connecting seats 11 to 13 are locations where steam is present when the steam trap is operating normally, and specific locations within the casing that are locations where drain is present when the steam trap is causing drain discharge clogging. In the case of the float type steam trap shown in FIG. 2, it is formed on the outer surface of the casing corresponding to the upper part of the valve chamber 4, so that the steam trap is operating normally or the drain discharge is clogged by the detection signal from the temperature sensor 14b. Can be accurately determined.

  1 and 2 show the sensor 14 attached to the upper coupling seat 11 with a cap nut 15 as shown by the solid line. If the space from the steam trap in the steam trap installation location is narrow, the sensor 14 14 is not attached to the upper connecting seat 11, but the sensor 14 is attached to the right connecting seat 12 or the left connecting seat 13 by a cap nut 15 as shown by a dotted line in FIG.

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

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Trap body 2 Bolt 3 Trap cover body 4 Valve chamber 5 Trap inlet 6 Trap outlet 7 Valve port 8 Float 9 Filter 10 Bimetal 11 Upper connection seat 12 Right connection seat 13 Left connection seat 14 Sensor 14a Vibration sensor 14b Temperature sensor 15 Cap nut 16 cable

Claims (1)

A valve characterized in that a plurality of coupling seats projecting in different directions are formed on an outer surface of a casing of a valve, and an operating state detection sensor is attached to one coupling seat among the plurality of coupling seats. Kind of operating state detection device.

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