JPS58137731A - Apparatus for detecting leakage of sodium - Google Patents

Abstract

PURPOSE:To monitor continuously plural sampling points at the same time, by putting plural sampling pipings together in one piping through a header and introducing said piping into one sodium leakage detector. CONSTITUTION:The gas sampled from an annulus space 3 between a cooling system piping 1 and a heat insulating structure 2 by plural sampling piping 5 is collected by a header 7 provided on the downstream and said gas is introduced into a gas sampling type sodium leakage detector 11 and then, detection of sodium is carried out. A by-pass line 9 provided with a flow rate controlling valve 10 is provided in parallel to the detector 11 and it is controlled so as to satisfy measuring conditions of the detector 11 by controlling the flow rate. And, each piping 5 is provided with a flow rate controlling valve 6 and it is regulated so that the gas flow rate of each line is made uniform. Stop valves 4, 8 are provided as a valve for pressure proof test in order to confirm the soundness of the header 7 and the piping 5.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the detection of sodium leakage in a gas sampling shoe, and in particular has the function of continuously monitoring multiple sampling points. Place it in a sodium leak detection device suitable for detection.

n) In the cooling piping system of the IJ Um-cooled fast breeder reactor)
Conventionally, to detect IJ gas leaks, multiple gas sampling pipes were attached to cooling pipes, connected to output selector valves of these gas sampling pipes, and the sampling pipes were changed at regular intervals using the selector valve. The system uses a configuration in which the output is guided to a sodium leak detector.
I was monitoring multiple sampling points like Jin.

However, with this conventional method, all sampling points cannot be monitored simultaneously in a strict sense, and each point is only monitored by IwA at each sampling period, so there is a problem with continuous monitoring. was there.

The purpose of the present invention is to eliminate the above-mentioned drawbacks of the prior art and provide a natricum leak detection scissors that can simultaneously view multiple sampling points with an IJ rim leak detector. There is a particular thing.

In order to achieve the above object, in the present invention, a plurality of sampling pipes are connected to a single pipe via a header to lead to a single sodium leak detector, and a plurality of sampling pipes are connected in parallel to this detector. The feature is that the flow rate of the detector can be controlled through the bypass line.

Hereinafter, the present invention will be evaluated based on the embodiment shown in FIG. I will clarify. In the same figure, there are multiple sampling pipes from the Aeras Sky Tower 3, which is the cooling system pipe 1 and the heat insulation structure 2 of the Natricium Cooling Fast Reinforcing Furnace! ! The sampled gas is collected and unified by a nine-header 7 provided downstream, and the gas is led to the sample/all sodium leak detector 11, where sodium leak detection is performed. In this case, a nine bypass line 9 equipped with a flow rate control valve 10 is provided in parallel to the sodium leak detector 11, thereby controlling the gas flow rate flowing to the detector 11 and detecting the detector 11' (2).
) III is controlled to wet the constant conditions. The No. 9 sampling pipe 5 is provided with a flow rate regulating valve 6t, and the gas flow rate in each line is adjusted to be uniform. In addition,
The stop valves 4 and 8 are connected to the header 7 and the sampling pipe 5.
Healthy 4! ! ai! Gas sampling is carried out by a sampling pump 12 installed downstream of the detector 11, which is provided as a round pressure test valve.
Ru.

According to this embodiment, multiple sampling points can be monitored simultaneously and continuously using a single gas sampling and natrichum leak detector without significantly changing the conventional gas printer system. Since a simple header is used, the reliability of the detection system is also improved.

As described above, according to the present invention, it is possible to continuously monitor a plurality of sampling points with one gas sampling sodium leak detection device, and it is possible to improve economic efficiency and reliability.

[Brief explanation of drawings]

FIG. 111 is a block diagram showing an embodiment of the present invention.

Claims (1)

[Claims] L Collect gas from multiple gas sampling pipes and collect 1
A header for outputting to the main pipe, a sodium leak detector for outputting sodium t* in the gas from the header, bypassing the gas to the sodium leak detector, and adjusting the flow rate of the bypass. A ninth bypass line for controlling the flow rate of the sodium leak detector and a ninth bypass line for controlling the flow rate of the sodium leak detector.