JPS6220438Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an apparatus for measuring the temperature of a treated material in a continuous heat treatment furnace.

(Prior art and its problems) In a continuous furnace having a plurality of zones with different temperature ranges, it is preferable that the actual temperature of the material to be treated is a temperature determined in the zone.

Therefore, various attempts have been made to measure the actual temperature of the treated material being transported through the furnace.

For example, there is a method of attaching thermocouples to the treated material and measuring the actual temperature in each zone (position) of the treated material using a thermometer installed on the charging side of the furnace.

However, this method requires a compensating lead wire that is approximately the same length as the furnace length, which is easily broken, and in a furnace with a partition door inside the furnace, such as a charging (extraction) bestible in a continuous atmosphere furnace, the door must be kept fully closed. Therefore, it lacks practicality.

In addition, a temperature measuring device with a memory device housed in an insulated case is attached to a tray etc. on which the treated material is placed, and is run through the furnace to measure the actual temperature of the treated material, and after being extracted from the furnace, the temperature is measured. A method of extracting recorded data from the device and reading the actual temperature of the material to be treated is proposed in Japanese Patent Application Laid-Open No. 128772/1983.

However, with this method, it is only possible to know the past actual temperature of the treated material, but it is not possible to know the actual temperature at that time when the treated material passes through the relevant zone.
Not only does this have the problem of not being able to quickly control the actual temperature of the treated material, but the heat-insulating case has a water-cooled structure, so there is a limit to how long it can be used.
Since the cooling water evaporates inside the reactor, it cannot be used, and the reactor to be used is specified.

For the above reasons, conventionally, in continuous furnaces, the temperature of the treated material is indirectly controlled by focusing on the correlation between the temperature inside the furnace and the temperature of the treated material and adjusting the temperature inside the furnace to a predetermined value. At present, it is not possible to precisely control the temperature of the treated material.

An object of the present invention is to provide a processing material temperature measuring device that can measure the actual temperature of the processing material using a simple device in a continuous heat treatment furnace.

(Means to Solve the Problems) In order to achieve the above object, the present invention provides a continuous heat treatment furnace in which a loading member loaded with processing materials travels inside the furnace. A heat-resistant trolley wire is provided to connect to a thermometer provided outside, and a lever having a collector at its tip that contacts the heat-resistant trolley wire is provided on the pedestal provided on the loading member, and the collector is connected to the heat-resistant trolley wire. It is connected to a thermocouple fixed to the treated material.

(Example) Next, the present invention will be explained with reference to the drawings which are one example.

In the figure, reference numeral 1 indicates a continuous heat treatment furnace, in which the processing material W loaded on a tray 3, which is a loading member, is transported into the furnace by a hearth roller 4 and heated to a predetermined temperature by a heating means such as a burner (not shown). It is.

Reference numerals 5 and 5 denote support members provided through the furnace side wall 2, and the in-furnace tip of the support member 5 is bent upward;
As shown in FIG. 2, a heat-resistant trolley wire 6 is provided at the tip of the heat-resistant trolley wire 6 in the furnace length direction and with both ends slightly inclined downward. It is connected to a thermometer 8 by a lead wire 7 that runs through it.

Reference numeral 9 denotes a pedestal erected at the corner of the tray 3 on the trolley wire 6 side, and this pedestal 9 has two levers 1.
0a and 10b are provided so as to be rotatable up and down. One end of this lever 10a is provided with a current collector 1 which rotates under its own weight and comes into contact with the trolley wire 6.
1 is provided, and each current collector 11 is connected to a thermocouple 12 fixed to the processing material W. In addition,
14 is a screw type stopper for regulating the tilting range of the levers 11a and 11b, and the lower surface of the current collector 11 is
It is adjusted so that it is located on the inclined portion 6a of the trolley wire 6.

Therefore, when the tray 3 is transported together with the processing material W by the hearth roller 4, the current collector 11 first comes into contact with the inclined part 6a of the trolley wire 6, and slides while being guided by the inclined part 6a. move. That is, in this state, the thermocouple 12 is connected to the thermometer 8 via the current collector 11, the trolley wires 6, 6, and the lead wires 7, 7, so that the actual temperature of the processing material W at the relevant position is measured by the thermometer 8. It is transmitted, detected and displayed.

The length of the trolley wire 6 is appropriately determined based on the desired measurement area length or the mutual length of the target processing materials to be measured.

Further, the trolley wire 6 may be provided at any location as long as it is necessary to measure the temperature of the treated material.

Furthermore, the collector 11 and the trolley wire 6 are connected to the processing material W.
The loading member on which the mount 9 is installed may be a tray in a roller hearth type furnace shown in the embodiment, a tray in a tray pusher type furnace, a cart in a cart type furnace, or a tray in a tray pusher type furnace.
This corresponds to a rotary hearth in a rotary hearth type furnace, and it goes without saying that the present invention can be applied to each of the above-mentioned furnaces as well.

(Effects of the invention) As is clear from the above explanation, according to the temperature measuring device for processed materials according to the present invention, a trolley wire connected to a thermometer is provided at a predetermined location on the inner wall of the furnace, and Because the loading member is provided with a current collector that slides into contact with the trolley wire as it moves and connects to the thermocouple fixed to the processing material, even if the loading member has a charging door, a furnace partition door, etc., the processing material The actual temperature of the body can be measured instantly with a simple configuration.
In this way, since the actual temperature of the treated material during furnace operation can be measured, the combustion amount of the burner or the water temperature of the cooler can be adjusted in a timely manner by temperature measurement, making it possible to control the optimal furnace temperature.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view of a continuous furnace equipped with a processing material temperature measuring device according to the present invention, and FIG. 2 is a diagram showing the wiring state of the trolley wire. 2... Side wall, 3... Tray, 4... Hearth roller, 6... Trolley wire, 7... Lead wire, 8
...Thermometer, 9... Frame, 10a, 10b... Lever, 11... Current collector, 12... Thermocouple, W...
Processed material.

Claims (1)

[Scope of utility model registration request] In a continuous heat treatment furnace in which a loading member loaded with processing materials travels inside the furnace, a heat-resistant trolley wire is provided near the inner wall of the furnace at a predetermined position and is connected to a thermometer provided outside the furnace. A continuous heat treatment furnace characterized in that a lever having a current collector at its tip that contacts the heat-resistant trolley wire is provided on a pedestal provided above, and the current collector is connected to a thermocouple fixed to the processing material. Treated material temperature measuring device.