JP4494560B2 - Operation determination device for float type oil-water separator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is an operating state of a float type oil / water separator that separates water mixed in oil using devices such as oil combustion devices and oil storage tanks and oil transport pipes and automatically discharges them outside the system, that is, discharge of water. The present invention relates to an operation determination device for a float-type oil-water separator that determines whether or not the operation is normally performed, whether or not oil is leaked, and the like.
[0002]
The float type oil / water separator has a casing that forms an inlet, a valve chamber, and an outlet, a drain valve port that communicates the valve chamber and the outlet is provided in the lower portion of the valve chamber, and a float having a specific gravity between oil and water in the valve chamber. It uses a specific gravity difference between oil and water to automatically discharge water out of the system by adjusting the opening of the drain valve opening by the float rising and falling on the water surface. An example of this is shown in Japanese Utility Model Publication No. 5-9041.
[0003]
If this float type oil-water separator does not operate normally, it will seriously hinder oil transportation and production activities. That is, if the valve opening function is reduced or insufficient and the water discharge capacity is small, rust is generated in the oil using device, and the life of the device is shortened or the combustion efficiency is lowered. Further, if the valve closing function is lowered and oil is leaked, expensive energy is wasted. In particular, leakage of flammable oils and oils containing toxic components is dangerous and must be reliably prevented.
[0004]
[Prior art]
Therefore, it has been conventionally performed to check the operating state of the float type oil-water separator, and a determination device for that purpose has been developed and put into practical use. One is to provide a transparent window in the casing of the oil / water separator or the outlet side pipe to visually check the state of the fluid inside.
[0005]
[Problems to be solved by the invention]
In the above-mentioned conventional one, there is a risk that the glass constituting the see-through window is broken and oil is blown out, resulting in personal injury. In addition, when the glass is dirty or cloudy, there is a problem that it cannot be accurately determined.
[0006]
Therefore, the technical problem of the present invention is to provide an operation determination device for a float type oil / water separator that can safely and accurately determine the operation state of the float type oil / water separator.
[0007]
[Technical means for solving the problems]
The means of the present invention devised to solve the above problems is that a casing forms an inlet, a valve chamber, and an outlet, a drain valve port that communicates the valve chamber and the outlet is provided in the lower portion of the valve chamber, and oil and water are provided in the valve chamber. In a float type oil-water separator having a middle gravity of a float that opens and closes a drain valve port, a guide cylinder fixed in the valve chamber for guiding the float vertically, and a valve chamber outside the guide cylinder And a water level detection means for detecting the water level of the valve chamber from the time until the ultrasonic wave radiated upward from the ultrasonic transmitter / receiver is reflected by the water surface and returns. And a determination means for determining operation from the water level of the valve chamber detected by the water level detection means, and the determination means determines that oil has leaked if the water level of the valve chamber is lower than the drain valve opening. water level discharged through the drain valve port when maintaining high than the predetermined In operation determination device of the float type oil-water separator and judging the discharge volume of water is small that is.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Float type oil / water separators float according to the amount of water flowing into the valve chamber and adjust the opening of the drain valve to discharge the water to the outside. When the water is discharged, the water level in the valve chamber changes up and down above the drain valve opening. Therefore, the water level in the valve chamber is detected from the time until the ultrasonic wave radiated upward from the ultrasonic transmitter / receiver is reflected by the water surface and returns, and if the water level in the valve chamber falls below the valve port, oil is discharged. It can be judged as leaking. If the water level in the valve chamber is maintained higher than a predetermined level, it can be determined that the discharge capacity is small. Thus, since an operation state is determined using the ultrasonic transmitter-receiver attached to the bottom outer surface of the valve chamber of the float type oil-water separator, it can be determined safely and accurately.
[0009]
【Example】
FIG. 1 is an overall configuration diagram of an operation determination device for a float-type oil-water separator according to the present invention. The present embodiment is applied to a free float type oil / water separator 20. The casing of the free float type oil-water separator 20 is formed by a main body 1 and a lid body 2 fastened to the main body 1 and has a valve chamber 3 inside. The main body 1 has an inlet 4, an outlet passage 5 and an outlet 6, and the inlet 4 communicates with the upper portion of the valve chamber 3. A valve seat 8 having a drain valve opening 7 is attached to the lower side wall of the valve chamber 3. The lower part of the valve chamber 3 communicates with the outlet 6 from the outlet passage 5 through the drain valve port 7. A hollow spherical float 9 that opens and closes the drain valve port 7 is disposed in the valve chamber 3 in a free state. The float 9 has an intermediate specific gravity between oil and water. A guide cylinder 16 for guiding the float 9 in the vertical direction is fixed to the valve chamber 3. The guide tube 16 has a small hole on one side.
[0010]
An ultrasonic transmitter / receiver 14 is attached to the bottom outer surface of the valve chamber 3 and connected to the control calculator 15. The control calculator 15 controls the ultrasonic transmitter / receiver 14 every predetermined time, emits ultrasonic waves upward from the outer surface of the bottom of the valve chamber 3, and starts from the time until it returns after being reflected by the water surface. If the water level in the chamber 3 is detected and the water level in the valve chamber 3 falls below the drain valve port 7, it is determined that oil has leaked, and if the water level in the valve chamber 3 remains higher than a predetermined level, the water is discharged. It is determined that the capacity is small and displayed.
[0011]
In the above embodiment, the present invention is applied to a free float type oil / water separator, but can also be applied to a lever float type oil / water separator.
[0012]
【The invention's effect】
As described above, according to the present invention, the water level of the valve chamber is detected using the ultrasonic transmitter / receiver attached to the bottom outer surface of the valve chamber of the float type oil / water separator, and the operating state is determined from the water level of the valve chamber. By doing so, the outstanding effect that the operating state of a float type oil-water separator can be determined safely and correctly is produced.
[Brief description of the drawings]
FIG. 1 is a cross-sectional configuration diagram of an operation determination device for a float-type oil-water separator according to an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body 2 Lid 3 Valve chamber 4 Inlet 6 Outlet 7 Drain valve port 9 Float 14 Ultrasonic transmitter / receiver 15 Control arithmetic unit 20 Free float type oil-water separator

Claims (1)

The casing forms an inlet, a valve chamber, and an outlet, and a drain valve port that connects the valve chamber and the outlet is provided at the lower part of the valve chamber. A float that opens and closes the drain valve port has a specific gravity between oil and water in the valve chamber. In the float type oil / water separator arranged, a guide cylinder fixed in the valve chamber for guiding the float in the vertical direction, an ultrasonic transmitter / receiver attached to the bottom outer surface of the valve chamber outside the guide cylinder, Operates from the water level detection means that detects the water level of the valve chamber from the time it takes for the ultrasonic wave radiated upward from the transceiver to be reflected and returned by the water surface, and from the water level of the valve chamber detected by the water level detection means Determining means for determining whether oil is leaking if the water level in the valve chamber is lower than the drain valve port, and from the drain valve port if the water level in the valve chamber is maintained higher than a predetermined level. determining means determines that the discharge capacity of the water to be discharged is small Operation determination device of the float type oil-water separator for.

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