JPS6339588Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a fluorocarbon leakage detection device for a fluorocarbon heat exchanger.

A fluorocarbon heat exchanger is used, for example, to recover waste heat from a converter, and the amount of water used as a medium between the heat exchanger and the waste heat source side of the converter is 1.5 to 2 kg/
^cm2 , and on the other hand, the Freon liquid, which is the medium of the Freon heat exchanger, has a pressure of 5 to 10 kg/ ^cm2 , so if an abnormal situation occurs, the heating pipes and pipes of the pipe group through which water is passed will be Freon gas may leak from the board into the water.

Before removing leaked Freon, it is necessary to detect the leakage. Conventionally, water was periodically extracted from a water chamber and Freon was detected in the form of F ions and Cl ions.

However, in an actual heat exchanger, some of the fluorocarbons leak into the water and exist in the form of ions, and some of it becomes a gas and accumulates in the upper part of the water chamber. The ion detection method cannot detect accurately unless the amount of leakage increases to a certain extent, and the detection work is difficult.

The present invention utilizes the property that leaked Freon collects as a gas in the upper part of the water chamber to easily collect leaked Freon before detection.
It is an object of the present invention to provide a collection device for detecting fluorocarbon leakage in a fluorocarbon heat exchanger that can reliably and easily detect leakage.

Its structure is that a fluorocarbon heat exchanger is provided with a fluorocarbon gas collection container in which a group of pipes leading to the water chamber are in contact with the fluorocarbon liquid in the fluorocarbon liquid chamber, and the upper part of the water chamber and the fluorocarbon gas collection container are connected via an on-off valve. It is characterized by being connected by a pipe.

The present invention collects the fluorocarbons that accumulate in the upper part of the water chamber and are heavier than the atmosphere, so the ions can be collected not as ions but as fluorocarbon gas. Therefore, collection is easy and reliable. It is possible to enable simple detection and easy detection.

Examples will be described below with reference to the drawings.

In Fig. 1, 1 is a fluorocarbon liquid chamber, 2 is a water chamber sandwiching the fluorocarbon liquid chamber, 3 is a group of pipes leading to the water chamber, and 4 is installed, for example, on the ground, especially at a position lower than the upper part of the water chamber, which will be described later. A fluorocarbon gas collection container installed in
Leaving the upper part open makes it easy to take out leaked fluorocarbons, and since fluorocarbon gas is sufficiently heavier than the atmosphere, there is no harm in leaving it open. 5
is a pipe connecting between the upper part of the water chamber 2 and the collection container 4 located at a lower position, and an on-off valve 6 is interposed therein. This on-off valve 6 can also be used as an air vent valve. There is one collection container 4 on each side. In addition, 7 is a converter, and 8 is a circulation pipe that connects the water chamber 2 and the waste heat source on the converter side.

In the above embodiment, when the on-off valve 6, which also serves as an air vent, is opened from time to time, the fluorocarbon gas accumulated in the upper part of the water chamber is drawn out together with air, etc., through the pipe 5, and the fluorocarbon gas collection container, which also serves as a drain reservoir. Collected within 4 days. Since the upper part of the collection container 4 is open, collection can be easily performed by simply opening the on-off valve 6.

Freon can be easily detected by moving this collection container onto the ground and inserting a halogen leak detector.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view showing one embodiment of the present invention. 1...Freon liquid chamber, 2...Water chamber, 3...Pipe group,
4... Freon gas collection container, 5... Pipe, 6... Open/close valve.

Claims (1)

[Claims for Utility Model Registration] (1) In a fluorocarbon heat exchanger in which a group of tubes leading to a water chamber are in contact with a fluorocarbon liquid in a fluorocarbon liquid chamber, a fluorocarbon gas collection container is provided, and the upper part of the water chamber and the fluorocarbon gas collection are provided. A collection device for detecting fluorocarbon leakage in a fluorocarbon heat exchanger, characterized in that it is connected to a container via a pipe via an on-off valve. (2) The collection device according to claim 1, wherein the fluorocarbon gas collection container is placed below the upper part of the water chamber, and its upper part is open.