JPH0120685Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a temperature measuring and sampling device for measuring the temperature of molten metal, particularly molten steel, and collecting samples for spectroscopic analysis.

BACKGROUND ART Conventionally, as a sample collection device for spectroscopic analysis, one using a disk-shaped collection container (therefore, the sample is disk-shaped) is known.

Such devices have been widely used in the field because they require only a small amount to be sampled, and the molten metal cools uniformly and quickly within the sample container, thereby providing a sample suitable for spectroscopic analysis.

However, in the past, for example,
As seen in No. 10477, etc., the diameter of the probe had to be large if it was used as a temperature sensor due to the need to position the collection container in the center of the probe body (blocking heat from the outside).

The purpose of the present invention is to solve the above-mentioned conventional problems and provide a molten metal temperature measurement/sampling device that can reduce the probe diameter.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The molten metal temperature measuring and sampling device of the present invention (hereinafter referred to as the device of the present invention) will be described below with reference to embodiments shown in the drawings.

FIG. 1 shows an apparatus according to the present invention, and the apparatus 1 has a probe body 2 made of a paper tube or the like.

An insulator 5 made of a heat-resistant material is attached to the tip of the probe body 2 (left end in FIG. 1), and a sampler A and a temperature sensor 12 are fixed to the insulator 5.

For example, a thermocouple is used as the temperature sensor 12, and a lead wire 13 is led to the connector 3.

The connector 3 is used to electrically connect the device 1 to an external device when the device 1 is attached to a sub-lance.

The details of the insulator 5 are shown in FIG. 2, and a sampling container 6 constituting the sampler A is fixed to the insulator 5 with adhesive or the like.

The sampling container 6 is a disk-shaped collection chamber 7
and an inflow path 8 that is eccentrically positioned below the collection chamber 7 and communicates with the collection chamber 7.

The sampling container 6 is made of metal and in the illustrated embodiment is formed by a pair of overlapping halves 6a, 6b as shown in FIGS. 3 and 4.

A hole 9 is provided near the top of the sampling vessel 6, which excludes residual air as the molten metal flows into the sampling chamber 7.

On the other hand, as shown in detail in FIGS. 5, 6, 7 and 8, the insulator 5 has a hole 14 and a hole 16 provided penetrating from the front to the back at a position eccentric from the center. have

The hole 14 is provided on the front side of the insulator 5, and is communicated at the bottom with a narrow hole 15 penetrating through the back side.

A sampling container 6 is fixed in the hole 16 in the inlet channel 8 as shown in FIG.

Since the hole 16 is eccentric, the sampling container 6
The sampling chamber 7 can be positioned approximately at the center of the probe body 1.

Further, an inflow pipe 10 made of a non-metallic heat-resistant material such as a quartz tube is installed in the hole 16 so as to communicate with the inflow path 8 (fixed with refractory cement 18).

On the other hand, in the hole 14, a temperature sensor 12 (the one shown is a thermocouple housed in a U-shaped tube) is connected to the refractory cement 1.
8.

A lead wire 13 of the temperature sensor 12 runs through the probe body 2 through a thin hole 15 and reaches a connector 3.

The insulator 5 has a protrusion 17 on the outer periphery as shown in FIG.
The protrusion 17 is pushed into the tip of the probe body 2 and fixed thereto.

As shown in FIGS. 1 and 2, the inflow pipe 10 and the temperature sensor 12 protrude from the tip of the insulator 5. In this state, the metal cap 19
covered by.

A method of using the apparatus of the present invention shown in the above embodiments will be explained next.

That is, the device 1 is attached to a sub-lance and electrically connected to an external device at the connector 3.

In this state, the device 1 is inserted into the furnace and immersed in the molten metal.

At this time, the cap 19 melts due to heat and the inflow pipe 1
0 and temperature sensor 12 are exposed at the tip.

This exposes the inlet pipe 10 to the molten metal, and the molten metal flows into the collection chamber 7 through the inlet pipe 10 and the inlet channel 8.

At this time, the air in the sampling container 6 is discharged into the probe body 2 through the hole 9.

When the molten metal flows in, since the inflow path 8 is positioned eccentrically with respect to the disk-shaped collection chamber 7, the molten metal flows into the collection chamber 7 while rotating as shown by the arrow in FIG.

The molten metal rotates in the spiral collection chamber 7, and is removed with heat by the metal sampling container 6, cooled, and solidified to form a disk-shaped sample.

On the other hand, the temperature of the molten metal is detected by a temperature sensor 12 and sent to an external device.

After the above sampling is completed, the device 1 is pulled up from the molten metal.

The molten metal temperature measuring and sampling device of the present invention has the following effects in the configuration and usage method shown in the above embodiments.

(1) The molten metal temperature measuring and sampling device of the present invention has the configuration described in the scope of the utility model registration claim,
In particular, since the inflow path of the sampling container is eccentrically positioned below the collection chamber, the hole in the insulator can be positioned eccentrically from the center, and as a result, even when using a temperature sensor, the outer diameter of the insulator and therefore the outer diameter of the probe body can be adjusted. It can be made smaller.

(2) The molten metal temperature measuring and sampling device of the present invention has the same configuration as above, and in particular, the inflow path of the sampling container is eccentrically positioned below the sampling chamber, so the molten metal rotates from the inflow path to the sampling chamber. As a result, it is sufficiently mixed with the deoxidizing material (Al, etc.).

(3) The molten metal temperature measuring and sampling device of the present invention has the same configuration as above, and in particular, since the sampling container is made of metal, the molten metal flowing in is quickly cooled down, and this cooling is done by the rotation of the metal flow. Due to the synergistic effect of the two, not only can the collection time be shortened, but also uniform samples can be collected.

(4) The temperature measuring and sampling device for molten metal of the present invention has the same configuration as above, and in particular, since the inflow pipe is non-metallic and the sampling container is metal, the molten metal does not solidify during inflow and can smoothly flow in for sampling. It solidifies uniformly while rotating in the container, making it possible to collect extremely ideal samples.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of the device of the present invention, Fig. 2 is a detailed longitudinal sectional view of the insulator section of the same, Fig. 3 is a front view of the sampling container, Fig. 4 is a plan view of the upper half of the same, and Fig. 5. 6 is a front view of the insulator of the device of the present invention, FIG. 6 is a plan view of the same, FIG. 7 is a cross-sectional view of FIG. 5, 7-7, and FIG. 8 is a cross-sectional view of FIG. 5, 8-8. 1: Device, 2: Probe body, 3: Connector, 5: Insulator, 6: Sampling container, 6a, 6
b: Half body, 7: Collection chamber, 8: Inflow channel, 9: Hole, 1
0: Inflow pipe, 12: Temperature sensor, 13: Lead wire, 14: Hole, 15: Thin hole, 16: Hole, 17: Protrusion, 18: Fireproof cement, 19: Cap, A:
sampler.

Claims (1)

[Scope of utility model registration request] An insulator attached to the tip of the probe body, an inlet pipe made of a non-metal heat-resistant material attached to a hole eccentrically from the center of the insulator, and an inlet path eccentrically provided below the disk-shaped collection chamber. A spiral sampling container made of metal and connected to the inflow pipe in the inflow path and fixed to a hole in the insulator for stirring and solidification, and a temperature sensor fixed to the insulator protruding from the insulator. Molten metal temperature measuring and sampling device.