JPS58174836A - Instrument for measuring heat retained by fused substance - Google Patents

Abstract

PURPOSE:To measure the heat retained by a substance fused at high temperatures with safety by a method wherein the fused specimen is placed in a specimen tank and the rise of temperature of a water tank provided on the periphery of the specimen tank is measured. CONSTITUTION:A specimen is placed in the electric furnace of a specimen-fusing assembly A and fused in preselected temperature conditions. Then the fused specimen together with the melting pot is dropped and led to a specimen tank 7 of a measuring assembly B before being enclosed therein by instantly closing a sliding cover 8. In the measuring assembly B, an internal water tank 9 is filled with water beforehand, whereas an external tank is filled with warm water. The specimen tank 7 is heated by the dropped fused specimen as it is subjected to high temperature transferred therefore, thus the water in the internal water tank 9 is rapidly heated. A rise of the water temperature therein is detected by two pieces of sensors 12 and the calory retained by the fused specimen is computed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for measuring the retained heat of a high-temperature melt.

Recently, research has been conducted into the practical application of heat recovery equipment that utilizes the heat retained in slag discharged from blast furnaces. Accurately understanding the amount of heat held by a heat source is an important requirement for planning and designing heat recovery and utilization, but at present, specific heat measurements of objects in a molten state have not been sufficiently conducted. In other words, commonly used calorimeters transmit the heat of an object directly to water and measure the temperature rise of this water, but if a high-temperature molten substance is rapidly cooled directly in water, an explosion phenomenon may occur, which is dangerous. This is because measurement becomes impossible due to destruction of the device.

On the other hand, the present invention achieves the object by indirectly measuring the water without directly contacting it.Explaining the embodiment of the present invention with reference to the drawings, the entire sample is melted on a trolley. A sample melting section A is provided with a tubular electric furnace and is movable on the base frame 1; It consists of a measuring section B.

The sample melting section A melts the required sample via an electric furnace,
It has an elevator tube 2 for dropping and charging the molten sample together with the crucible into the measurement section B below, and can be moved back and forth (in the left-right direction in FIG. 1) a fixed distance using the base frame 1 as a guide.

3 is a stopper projecting on the base frame 1.

Measurement part BFi, as shown in FIG. 3, there is a tank body 6a made of stainless steel that is integrated with the inside of the outer box 4 via a heat insulating material 5;
6b is provided, and a copper tank body 6C is installed concentrically therein as a closed tank with a circular cross section and a common top plate.
Furthermore, a circular sample tank 7 made of copper is removably attached at the center with its upper end protruding outward, and a slide lid 8 that can be quickly opened and closed is attached to the upper end of this sample tank 7 (see Figure 2). ). With these tank bodies, the interior of the outer box 4 is centered around the sample tank 7, with an internal water tank 9 between the sample tank 7 and the tank body 6c, an external water tank 10 between the walls of the tank bodies 6b and 6a, and a tank body 6.
It is divided into an air insulation part 11 by a space between c and 6b,
Among these, the internal water tank 9 is equipped with two sensors 12, 12 with the upper end protruding to the outside and a stirring blade 13 rotated by a motor at the upper end, while the external water tank 10 has one end protruded on the side near the bottom. A sensor 14 protrudes from the outer box 4, a hot water injection pipe 16, 16 leading to an external hot water tank 15 (see Figure 2), and a motor 17 whose upper end is external.
Stirring blades 18, 18 each rotated at 17 are provided. In addition, in FIG. 1, 19 is an overflow pipe connected to the external water tank 10.

The present invention is constructed as described above, and in order to use it, a required sample is charged into the electric furnace of the sample melting section A and melted under a constant temperature condition, and then the molten sample is transferred together with the crucible to the measurement section. The sample is dropped into the sample tank 7 of B, and the slide lid 8 is quickly closed to seal it. The measurement unit B fills water into the internal water tank 9 in advance.
In addition, the external water tank 10 is filled with hot water via the hot water tank 15, and the bottom of the sample tank 7 is provided with heat conductive material such as steel bristles to prevent damage to the fallen melt and promote heat transfer. The sample tank 7 is heated by the heat transfer of the high-temperature sample due to the molten sample introduced, and this heat transfer rapidly increases the water temperature in the internal water tank 9. do. This rise in water temperature is detected by the two sensors 12, 12, and the temperature difference is calculated and the digitally displayed value becomes the amount of heat held by the molten sample.

In this case, the external water tank 10 prevents heat dissipation from the internal water tank 9, and is provided through an air insulation section 11, and is connected to the hot water tank 15 through a hot water injection pipe 16°16. It has a mechanism in which hot water is injected into the tank, and the water temperature in the tank changes rapidly following the water temperature in the internal water tank 9. That is, hot water injection with each sensor 1
2 and 14, this is always done automatically and in conjunction with each other. The water temperature in the tank is made uniform at the top and bottom by the gentle rotation of the stirring blades 13 and 18, respectively.

As explained above, in the present invention, the required molten sample is received in the sample tank 7, and the external temperature of this sample tank is transmitted to the water in the internal water tank 9 for measurement.5- There is no risk of explosion etc. Moreover, since the sample tank 7 is equipped with a slide lid 8 that can be quickly closed, the dissipation of heat after receiving is prevented, coupled with the fact that the sample melting part A is movable. Since the sample temperature is always displayed as is, it has many advantages, such as high accuracy and easy operation.

[Brief explanation of the drawing]

FIG. 1 is a side view, FIG. 2 is a plan view of the measuring section, and FIG. 3 is a front sectional view of the measuring section. Codes in the figure, A is the sample melting part, B is the measurement part, 1 is the base frame, 4
is the outer box, 7 is the sample tank, 8 is the slide lid, 9 is the internal water tank,
10 is an external water tank, 12.14 is a sensor, 13.18 is a stirring blade, 15 is a hot water tank, and 16 is a hot water injection pipe. 6- Figure 1 Figure 2 Figure v13

Claims (1)

[Claims] (1) A sample melting section that is equipped with a tubular electric furnace and is movable on the base frame, and a sample melting section that is installed inside the base frame and receives the sample melted in the electric furnace into a sample tank and performs the required measurements. The measurement section consists of a measuring section that opens onto the outer box through a sliding lid whose upper end can be quickly closed, and which has a cushioning material such as steel bristles spread inside it in advance. The sample tank is formed by concentrically enclosing an internal water tank surrounding the sample tank, and an external water tank with a space in between, and the internal water tank is equipped with two sensors for detecting the internal water temperature and a stirrer. The blades, and the external water tank are equipped with sensors and stirring blades, as well as a hot water injection pipe that communicates with a separate hot water tank and works in conjunction with the sensor to maintain the water temperature at the same temperature as the internal water tank. Retained heat measuring device.