JPS5937563Y2 - Entrained air detection device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mixed air detection device that detects air mixed into condensable gas generation equipment.

Conventionally, condensable gas generation equipment A is operated with negative pressure inside the equipment.
(hereinafter abbreviated as equipment A), for example, in a multi-effect seawater desalination equipment, it is extremely difficult to immediately detect whether or not air has entered equipment A.

The commonly used detection method is to stop the operation of equipment A, remove the gas from equipment A with a pump, etc., create a negative pressure, stop the pump, etc., hold this state, and after a period of time have elapsed, equipment A It was determined whether air was mixed in or not based on changes in the degree of vacuum inside.

Therefore, it takes a long time to detect air intrusion into equipment A, and the operation is stopped during that time, resulting in the inability to produce.Therefore, an improvement has been desired.

The present invention was developed in response to these demands, and one embodiment of the invention will be described based on drawings.

The first condenser 1 has a gas outlet 2 and a gas outlet 3 in the body, a cooling water outlet 4 in the top, and a liquid outlet 5 in the lower part. The ejector 6 communicates with the gas-filled lower IC pipe 8 and has a steam port 9 and a gas outlet 1o.

The gas outlet 1o of the ejector 6 communicates with the inlet of a second condenser 110, the condenser 11 having a cooling water population 12.

The outlet of the condenser 11 is pipe 13K. Therefore, the air collection box 15Vc disposed in the real well 14 communicates with the air collection box 15Vc.

On the other hand, the liquid outlet 5 of the first condenser 1 communicates with the air collection box 15 through a pipe 16.

Further, the upper part of the air collecting box 15 communicates with a flow meter 18 via a pipe 17, and further communicates with the atmosphere through an exhaust pipe 19.

The air collection box 15 has side surfaces and a top surface, and has an open bottom surface,
The lower part 15a of the side surface is partially immersed in the liquid in the real well 14 with an appropriate gap 21 between it and the inner surface 20 of the real well bottom plate, and the liquid in the air collection box 15 is immersed in the liquid in the real well 14. and are communicated through the gap 21.

The real well 14 has a box shape with a bottom and side surfaces, and holds liquid inside.

The upper surface may be open or there may be a lid for preventing intrusion of foreign matter, and a weir 22 and a liquid outlet 23 are provided at one end of the interior to keep the internal liquid level constant.

The open end of the pipe 16 from the condenser 1 and the open end of the pipe 13 from the condenser 11 are open in the liquid in the air collection box 15.

Since the present invention is constructed as described above, when using it, first, the gas supply 2 of the condenser 1 is connected to the equipment A,
Cooling water is allowed to flow in from cooling water population 4.

Next, steam is introduced from the steam port 9 of the ejector 6,
Cooling water flows into the condenser 11 from a cooling water port 12 .

In this way, the inside of the condenser 1 becomes a negative pressure, and the condensed gas flowing from the equipment A flows into the air collecting box 15 from the liquid outlet 5 with the cooling water due to the water head pressure.

- the gas body is sucked from the gas outlet 3 into the ejector 6;

Furthermore, it is condensed by the condenser 11 and flows into the air collection box 15 through the pipe 13 together with the cooling water.

The inside of the air collection box 15 has a pressure higher than atmospheric pressure due to the head pressure of the pipes 13 and 16, and the liquid that has flowed into the inside is from the real well 14, passes through the weir 22, and exits the device from the liquid outlet 23. leaks to.

The gas passes from the upper part of the air collection box 15 through a pipe 17, further passes through a flow meter 18, and is discharged from an exhaust pipe 19.

In this device, most of the gas is in the condensers 1 and 11.
It condenses into a liquid, and only a part of the gas flows into the exhaust pipe 19.
Be released from.

This amount is the flowmeter 1 when equipment A is operating normally.
8 indicates a constant value.

If outside air mixes into equipment A, the air will be captured by the air collection box 15 and discharged through the piping 17 and flowmeter 18, so the value indicated by the flowmeter 18 will be the normal value. It will go far beyond that.

Therefore, when air is mixed into the equipment A during operation, the value of the flowmeter 18 immediately shows an abnormally large value, so that the mixing of air can be quickly detected.

That is, by incorporating the device according to the present invention into equipment A, it is possible to easily and immediately detect that air has entered equipment A during operation, and by combining an alarm device with the flow meter 18, an alarm can be generated. It is also possible to emit.

In the above embodiment, an example was explained in which one set of the condenser 1 and the ejector 6 was used, but a plurality of sets of condensers and ejectors may be arranged in series.

As described above, according to the mixed air detection device of the present invention, it is possible to detect even a small amount of air mixed into the condensable gas generation equipment, and therefore, it is possible to know the fluctuation in the capacity of the condensable gas generation equipment at an early stage.

Furthermore, even if an abnormality occurs in the ejector, condenser, piping, etc. of this device, the value on the flow meter will decrease, making it easy to detect whether the problem is with the condensable gas generation equipment or the device. You can also.

[Brief explanation of drawings]

The drawing is a partially cutaway perspective view of a mixed air detection device showing an embodiment of the present invention. 1.11...Condenser, 6...Ejector-514...
・Hot well, 15...Air collection box, 18...Flow meter.

Claims (1)

[Scope of utility model registration request] A gas outlet of a condenser for condensing gas is communicated with an ejector, the ejector is communicated with an air collection box disposed in a real well, and a liquid outlet of the condenser is communicated with the air collection box, A mixed air detection device characterized by having a flow meter communicating with the upper part of the air collection box.