JPH10153496A - Heat value measuring device for glass-solidified body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To precisely grasp the heat value of a glass-solidified body by measuring the temperatures of a heat value measuring medium carried from a measuring vessel to a medium circulating means and the heat value measuring medium carried from the medium circulating means to the measuring vessel, respectively. SOLUTION: A glass-solidified body 6 is set into a measuring vessel 1, a heat value measuring water 7 is filled therein, the pump 9 is operated in the state where opening and closing valves 11, 12 are opened. The heat value measuring water 7 is run out from the measuring vessel 1, passed through a piping member 8, and continuously circulated to the measuring vessel 1 through a filter 10 and a heat exchanger 3. The flow rate of a heat exchange medium 13 to the heat exchanger 3 is regulated, and the temperature of the heat value measuring water 7 carried from the heat exchanger 3 into the measuring vessel 1 is made constant. The temperature of the heat value measuring water 7 carried from the measuring vessel 1 to a medium circulating means 2 and the temperature of the heat value measuring water 7 carried from the medium circulating means 2 to the measuring vessel 1 are detected by temperature detectors 14, 15, respectively. When both the temperatures are laid in steady state, the heat value of the glass-solidified body 6 is determined on the basis of them.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for measuring a calorific value of a vitrified body.

[0002]

2. Description of the Related Art Radioactive waste liquid generated in a nuclear facility is treated as vitrified waste by a waste liquid treatment facility and then stored in a radioactive waste storage facility.

In the above-mentioned waste liquid treatment facility, radioactive waste liquid is mixed into molten glass obtained by melting raw glass in a glass melting furnace, and the molten glass mixed with the radioactive solution is poured into a vitrified container, and the molten glass is melted. Is solidified to form a vitrified body.

In storing the vitrified waste in a radioactive waste storage facility, a waste liquid treatment facility requires
After decontaminating the outer surface of the vitrified body, the calorific value of the vitrified body is measured by bringing a heat flux meter into contact with the outer side of the vitrified body.

[0005]

However, the measurement of the calorific value of the vitrified body by the heat flux meter is easily affected by the atmosphere in the inspection room where the measurement is performed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and it is possible to accurately ascertain the calorific value of a vitrified body without being affected by the atmosphere in an inspection room where measurement is performed. It is intended to provide a quantity measuring device.

[0007]

In order to achieve the above object, a vitrified calorific value measuring apparatus according to the present invention is capable of storing a calorific value measuring medium and is a vitrified material whose calorific value is to be measured. A measuring vessel capable of charging the medium, a medium circulating means having a pump and a filter, each of an upstream end and a downstream end of the medium circulating direction being connected to a required part of the measuring vessel, and provided at a required part of the medium circulating means. And a heat exchanger that exchanges heat between the heat exchange medium supplied from the outside and the calorific value measurement medium flowing through the medium circulation means to cool the calorific value measurement medium, and from the measurement container to the medium circulation means. First temperature detection means for measuring the temperature of the calorific value measurement medium flowing out, and second temperature detection means for detecting the temperature of the calorific value measurement medium flowing into the measurement container from the heat exchanger of the medium circulation means. , Stored inside the measurement container And a ultrasonic vibrator for imparting vibration to the calorific value measuring medium which was.

In the apparatus for measuring the calorific value of a vitrified body according to the present invention, when the pump is operated in a state where the vitrified body is charged into the measuring container and the medium for measuring the calorific value is filled, the measuring container and the medium circulating means are provided. The medium for measuring the calorific value circulates between.

Further, the flow rate of the heat exchange medium with respect to the heat exchanger is adjusted so that the temperature of the calorific value measurement medium flowing into the measurement container from the heat exchanger becomes constant, and the measurement indicated by the first temperature detecting means is performed. Based on the temperature of the calorific value measuring medium flowing out of the container to the medium circulating means and the temperature of the calorific value measuring medium flowing into the measuring vessel from the medium circulating means indicated by the second temperature detecting means, the atmosphere outside the measuring vessel is measured. Without being affected
The calorific value of the vitrified body is measured.

[0010] The ultrasonic vibrator applies vibration to the calorific value measurement medium stored in the measurement container.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of an apparatus for measuring the calorific value of a vitrified body according to the present invention, which comprises a measuring vessel 1, a medium circulating means 2, a heat exchanger 3, a temperature detecting means 4, an ultrasonic wave. It is composed of a vibrator 5 and the like.

The measurement container 1 is formed so as to be able to accommodate therein a vitrified body 6 whose calorific value is to be measured and to store water 7 for calorific value measurement.

The medium circulating means 2 has an upstream end 8a in the water flow direction and a downstream end 8b in the water flow direction so that the calorific value measuring water 7 flows out of the measuring vessel 1 and returns to the measuring vessel 1 again.
Are connected to required portions of the measuring container 1, respectively, and pumps 9 provided at required portions of the piping members 8 are provided.
And a filter 10 attached to the upstream end 8a of the pump 9 in the water flow direction.

Opening / closing valves 11 and 12 are provided on the respective piping members 8 on the upstream and downstream sides of the filter 10 in the water flow direction.

The heat exchanger 3 is provided at a required location on the downstream side 8b of the pipe member 8 in the water flow direction with respect to the pump 9 and is provided with a heat exchange medium 13 supplied from outside and the pipe member 8.
Heat is exchanged with the calorific value measuring water 7 flowing through the water to cool the calorific value measuring water 7.

The temperature detecting means 4 comprises a first temperature detector 14 and a second temperature detector 15, and the first temperature detector 1
Numeral 4 is arranged near the upstream end 8a of the pipe member 8 in the water flow direction, and can detect the temperature of the calorific value measurement water 7 flowing out of the measurement container 1 to the pipe member 8.

The second temperature detector 15 is disposed between the heat exchanger 3 and the measuring vessel 1 near the downstream end 8b of the pipe member 8 in the water flow direction. The temperature of the calorific value measurement water 7 flowing into the measurement container 1 can be detected.

The ultrasonic vibrator 5 includes an oscillator 16 and the vibrator 1.
By vibrating the calorific value measuring water 7 stored inside the measuring container 1, the vitrified body 6 can be decontaminated.

Reference numeral 18 denotes a drain pipe used to remove the calorific value measuring water 7 from the measuring vessel 1.
8 is piped between a required portion of the measurement container 1 and a pipe member 8 of the upstream side on-off valve 11 of the filter 10 on the filter 10 side;
An opening / closing valve 19 is provided at a required portion of the drain pipe 18.

The operation of the apparatus for measuring calorific value of a vitrified body shown in FIG. 1 will be described below.

When the vitrified body 6 is charged into the measuring container 1 and the calorific value measuring water 7 is filled, and the pump 9 is operated with the open / close valves 11 and 12 opened, the calorific value measuring water 7 is 1, flows through the inside of the pipe member 8, returns to the measurement container 1 via the filter 10 and the heat exchanger 3, and continuously circulates.

Here, the heat exchanger 3 is controlled so that the temperature of the calorific value measuring water 7 flowing into the measuring vessel 1 from the heat exchanger 3 (the temperature T2 indicated by the second temperature detector 15) becomes constant. The flow rate of the heat exchange medium 13 is adjusted.

Then, the calorific value measuring water 7 flowing from the measuring vessel 1 indicated by the first temperature detector 14 to the medium circulating means 2 is provided.
When the temperature T1 of the water and the temperature T2 of the calorific value measuring water 7 flowing from the medium circulating means 2 into the measuring vessel 1 indicated by the second temperature detector 15 are in a steady state, the first temperature detection is performed. The calorific value of the vitrified body 6 is measured based on the temperature T1 indicated by the detector 14 and the temperature T2 indicated by the second temperature detector 15.

When the oscillator 16 of the ultrasonic vibrator 5 is activated to apply vibration to the calorific value measuring water 7 stored in the measuring container 1 via the vibrator 17, the vitrified body 6 Dust and the like adhering to the surface are removed, and decontamination of the vitrified body 6 can be performed.

Further, when the calorific value measuring water 7 stored in the measuring container 1 is removed, the on-off valves 11 and 12 of the pipe member 8 are closed, and then the on-off valve 19 provided on the drain pipe 18 is closed. To release.

When the on-off valve 19 is opened, the calorific value measuring water 7 flowing out of the measuring vessel 1 through the drain pipe 18 to the piping member 8 flows into the filter 10 from the piping member 8 and is filtered by the filter 10 to remove dust and the like. Is captured, and then the filter 1
0 is discharged to the outside from the drain valve 10a.

As described above, according to the vitrified calorific value measuring apparatus of the present invention, the calorific value of the vitrified body 6 can be accurately measured without being affected by the ambient temperature outside the measuring vessel 1. And decontamination of the vitrified body 6 can be performed at the same time.

The apparatus for measuring the calorific value of a vitrified body of the present invention is not limited to the above-described embodiment.
It goes without saying that various changes can be made without departing from the spirit of the present invention.

[0030]

As described above, according to the apparatus for measuring the calorific value of a vitrified product of the present invention, the following various excellent effects can be obtained.

(1) The calorific value of the vitrified body can be accurately measured without being affected by the ambient temperature outside the measurement container.

(2) The decontamination of the vitrified body can be performed simultaneously with the measurement of the calorific value of the vitrified body.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of an embodiment of a calorific value measuring device for a vitrified body of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Measurement container 2 Medium circulation means 3 Heat exchanger 5 Ultrasonic vibrator 6 Vitrified body 7 Water for calorific value measurement (medium for calorific value measurement) 9 Pump 10 Filter 13 Heat exchange medium 14 1st temperature detector (1st) Temperature detector) 15 Second temperature detector (second temperature detector)

Claims (1)

[Claims] 1. A measuring container capable of storing a calorific value measuring medium and charging a vitrified body whose calorific value is to be measured, and having a pump and a filter, each of an upstream end and a downstream end in a medium flowing direction. Between the medium circulating means connected to a required portion of the measurement container, and a heat exchange medium provided at a required portion of the medium circulating means and supplied from the outside and a calorific value measuring medium flowing through the medium circulating means. A heat exchanger for performing heat exchange to cool the calorific value measuring medium, and a first for measuring the temperature of the calorific value measuring medium flowing out of the measuring vessel to the medium circulating means.
Temperature detecting means, second temperature detecting means for detecting the temperature of the calorific value measuring medium flowing into the measuring vessel from the heat exchanger of the medium circulating means, and the calorific value measuring medium stored inside the measuring vessel An ultrasonic vibrator for applying vibration to a vitrified body.