JPH05274Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a thermocouple mounting structure for a continuous casting mold.

<Prior Art> The temperature of a continuous casting mold is measured by inserting a number of thermocouples into the back side of the mold. In this case, since cooling water is passed through the cooling box placed on the back side of the mold body, a seal against the cooling water is required, and also to ensure that the tip of the thermocouple is in stable contact with a predetermined measurement point on the mold body. It is necessary to press down the thermocouple toward the mold body. The structure that has been used in the past to meet these requirements is as shown in Figure 2, in which the tip of the outer rod 1 is screwed into a thermocouple insertion hole drilled on the back surface of the mold body 2. A spring 7 is installed behind the collar-shaped stopper ring 6 which is sealed with the cooling water in the cooling box 4 by the gasket 3 interposed between the two, and which is brazed to the rear of the tip of the thermocouple 5.
The spring 7 is pressed by the tip of the inner rod 8 that is slidably inserted into the outer rod 1, and the base end of the inner rod 8 is pressed and fixed with a nut-shaped pressing tool 9, and the spring 7 is pushed down. The structure is such that the thermocouple 5 is pressed down against the mold body 2.

However, in such a structure, the diameter of the outer rod 1 becomes large in order to incorporate the spring 7, and there are restrictions on its mounting position. The pitch of the mold body 2 is required to be approximately 30 mm or more.
Thermocouples could not be installed on the row of mounting bolts used to secure the cooling box 4, and thermocouples could not be installed between other narrower cooling water slits. Also, since the spring 7 is pressed down by the nut-shaped pressing tool 9 via the inner rod 8, the inner rod 8
As a result, the outer rod 1 must also pass straight through the inside of the cooling box 4, and the temperature measuring point on the mold body 2 and the outlet on the back of the cooling box 4 must be aligned in position. If there is any obstruction on the back side, the thermocouple cannot be installed, and this also greatly restricts the installation position of the thermocouple.

<Problems to be solved by the invention> The invention solves the above-mentioned drawbacks of the conventional technology, and can be installed anywhere even if the cooling water slit pitch is narrow, and the temperature measurement point and the outlet on the back of the cooling box are The purpose is to provide a thermocouple mounting structure that can be changed.

<Means for solving the problems> The above object of the present invention can be achieved by adopting the following means. That is, a flange-shaped stopper ring is installed at a position closer to the rear than the tip of the thermocouple whose tip is inserted into the thermocouple insertion hole drilled on the back side of the mold body, and an elastic material such as rubber is attached to the rear of the stopper ring. A hollow body consisting of a thermocouple is arranged in such a manner that the thermocouple passes through the hollow interior, and a hollow reduction bolt is arranged at the rear of the hollow body in such a manner that it is to be screwed together with the mold body, and the mold This is a structure for attaching a thermocouple to a continuous casting mold, with a waterproof packing interposed between the main body and the reduction bolt.

<Embodiments and Operations> The present invention will be described in detail below with reference to drawings showing embodiments thereof.

As shown in Figure 1, this embodiment has a diameter of approximately 2 mmφ.
This is an example of inserting a thermocouple 5 into the mold body 2 to a depth of about 22 mm, and the thermocouple insertion hole drilled on the back side of the mold body 2 is about 3 mmφ inside and about 7 mmφ at the opening. applied to objects. That is, from the tip of the thermocouple 5, a hole of about 2 mmφ passes through the center, and a lowering bolt 10 whose rear part has a stepped larger head (outer diameter 12 mmφ) than the front part passes through it, and a hole of about 2 mmφ passes through the center. A hollow body 11 made of silicone rubber with an outer diameter of 6 mmφ and a length of about 5 mm is fitted on the outside in this order, and then a flanged stopper ring 6 with an outer diameter of 6 mmφ is attached to the outer periphery about 13 mm rearward from the thermocouple tip. The pair was inserted into the above-mentioned thermocouple insertion hole drilled on the back surface of the mold body 2, and the reduction bolt 10 was screwed into the mold body 2 via the ring-shaped packing 12 with an outer diameter of 12 mmφ and firmly tightened and fixed.

In the present invention having the configuration as shown in the above embodiment, by tightening the reduction bolt 10, the part A in FIG. The installed hollow body 11 made of an elastic material is
Cooling water that deforms and enters from A and B as shown in the figure.
Seal the parts. In addition, the repulsive force of the hollow body 11 made of an elastic material pushes the stopper ring 6 and presses the thermocouple 5 toward the mold body 2.
This achieves both the functions of compressing the thermocouple and waterproofing it.

It should be noted that the above-mentioned seal 12 can be made of a fixed elastic seal such as rubber or the like, and a liquid sealant can also be used.A similar liquid sealant can also be applied to the threaded part of the lowering bolt 10 in addition to the installation part of the seal 12. It is effective to keep it.

<Effects of the invention> As described above, according to the present invention, instead of using a spring, inner rod, and outer rod in the past, only an elastic hollow body and a compression bolt are used, so the outer diameter can be reduced accordingly. It is small and well about 2/3 of the conventional size.
It can be installed in narrow spaces, and since there is only a thermocouple behind the reduction bolt screwed into the mold body and no rod is required, it can be bent, making it possible to attach the temperature measurement point and the back of the cooling box. There is no need to match the exits, and the thermocouple can be taken out from any part, resulting in the effect that the thermocouple can be installed even between narrow slits and can be taken out from a desired position.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of an embodiment of the present invention, FIG. 2 is an explanatory diagram of a conventional structure, and FIG. 3 is an explanatory diagram of main parts to show the operation of the present invention. In the figure, 1... Outer rod, 2... Mold body, 3
...Packskin, 4...Cooling box, 5...Thermocouple, 6
...Stopping ring, 7...Spring, 8...
Inner rod, 9...pressing tool, 10...pressing bolt, 11...hollow body, 12...packing.

Claims (1)

[Scope of utility model registration request] A flange-shaped stopper ring is installed at a position closer to the rear than the tip of the thermocouple whose tip is inserted into the thermocouple insertion hole drilled on the back side of the mold body, and the rear part of the stopper ring is made of an elastic material such as rubber. arranging a hollow body in such a manner that a thermocouple passes through the hollow body; further arranging a hollow reduction bolt at the rear of the hollow body in such a manner that it is to be screwed together with the mold body;
Moreover, the thermocouple mounting structure for continuous casting molds has a waterproof gasket interposed between the mold body and the reduction bolt.