JP2566765Y2 - Contact type temperature measuring device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contact type temperature measuring device for measuring the temperature of a moving measuring object such as a hot strip.

[0002]

2. Description of the Related Art Conventionally, in a contact-type temperature measuring device of this kind, a contact-type thermometer is brought into contact with a moving object to be measured, and the temperature is measured online while sliding on the object to be measured. Here, as the contact-type thermometer, a hand-held surface thermometer mainly formed by supporting and protecting a thermocouple attached to Inconel with a contact is used.

In such a contact type thermometer, it is necessary to set the contact surface of the contactor so as to be perpendicular to the measurement surface of the object to be measured.

In general, in a contact-type temperature measuring device,
Thermal energy is relatively transmitted and received due to the temperature gradient at the contact surface between the measurement object and the contact. It is preferable that the temperature be measured when the heat radiation and absorption at this time are in an equilibrium state. In order to accurately measure the actual temperature of the object to be measured, it is necessary to improve the thermal conductivity and heat capacity of the frame contact itself and minimize the heat radiation of the contact itself.

[0005]

In the case of the contact-type temperature measuring device described above, the contact surface of the contact needs to be accurately set so as to be perpendicular to the measuring surface of the object to be measured. Since the probe has poor flexibility (buffering property), there is a problem in that it becomes difficult to measure the temperature of a measurement object whose surface swells like a hot strip.

Further, when the temperature of the object to be measured is higher than that of the contact, the contact takes away heat of the object to be measured. For example, if the time constant of the contact is about 0.2 seconds and the measurement accuracy is to be 99% or more with respect to the actual temperature of the measurement object, the contact is brought into contact with the measurement object for 1 second or more. There is a need.

Further, when the temperature of a measurement object such as an aluminum material in a high temperature state is measured, the aluminum material powder adheres to the surface of the frame contact, and this ratio increases in proportion to the contact time of the frame contact. .

The present invention has been made to solve such a problem, and a technical problem thereof is to provide a contact-type temperature measuring device capable of measuring the actual temperature of an object to be measured quickly and accurately. is there.

[0009]

According to the present invention, there is provided a contact type including a contact provided with a temperature measuring means, and a supporting portion for supporting the contact, the contact type measuring a temperature by contacting an object to be measured. In the temperature measuring device, the contact embeds the temperature measuring means and includes a buffer material part for buffering the contact with the object to be measured, and the supporting part includes a heating means for preheating the temperature measuring means. The provided contact temperature measuring device is obtained.

Further, according to the present invention, in the contact-type temperature measuring device, a contact-type temperature measuring device in which the contact is swingably attached to the tip of the support portion is obtained.

[0011]

With the contact-type temperature measuring device of the present invention, a preheating sheath heater for preheating the temperature measuring means is provided on the support portion to compensate for the temperature difference between the actual temperature of the object to be measured and the measurement. The temperature of the object can be accurately measured. Further, since the contact is swingably attached to the tip of the support, the contact can be brought into close contact with the measurement object whose surface is undulating, and the temperature can be measured with higher accuracy.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a partial sectional side view showing a basic structure of a contact-type temperature measuring device according to an embodiment of the present invention.

The contact-type temperature measuring device has a support portion 1 comprising a hollow rod-shaped arm 5 having one end extending and having a flange 5a formed on the periphery thereof. And a contact 2 to be brought into contact with the object 3 to be measured. Also in the case of this contact type temperature measuring device, the contact surface of the cushioning portion 4 provided in the contact 2 is contacted in a direction perpendicular to the measurement surface of the measurement object 3 as described later. 3 is set so as to be in close contact with the measurement surface.

Of these, in the hollow portion of the rod-shaped arm 5,
A spring 51, a fixed spacer 52 attached to one end of the spring 51, and a movable spacer 53 attached to the other end are provided. Also, the movable spacer 5
A pointed pivot portion 8 that engages with the contact 2 is attached to 3. The contact 2 has a flange stopper 6a that engages with the flange 5a of the rod-shaped arm 5, a contact portion 6 to which the pivot portion 8 is fixed, and an outer frame (cover) that covers the contact portion 6. 7 and the outer frame 7
And a heat-resistant cushioning member 4 such as asbestos fiber which is in contact with the object 3 and is laminated and compressed.

With this configuration, when the contact 2 is pressed against the measuring object 3, the flange stopper 6a separates from the flange 5a as shown in FIG. buffer material 4 is with respect to the axial direction of the rod-like arm 5 of the support portion 1 (extending direction), up and down, left and right, a temperature-measuring portion T _P of the measuring object 3 with a movable freedom in three directions of the front and rear , The contact surface of the cushioning member 4 can be brought into contact.

On the other hand, the cushioning portion 4 has a contact surface that comes into contact with the measurement surface of the object 3 to be measured. A temperature measuring element 9a is embedded in the contact portion 6 through the outer frame 7, and a temperature measuring element 9b is embedded in the buffer material portion 4 with a part thereof being exposed. The temperature measuring elements 9a and 9b together form a thermocouple. Further, a sheath heater 10 for preheating is provided on the outer periphery of the rod-shaped arm 5 as a heating means for preheating the temperature measuring elements 9a and 9b.

[0018] In the contact type temperature measuring device, is brought into contact with the contact surface of the cushioning material 4 against the temperature measuring part T _P of the measuring object 3, respectively temperature measuring elements 9a, 9b temperature measuring part T of the _a, it is possible to measure the actual temperature of the measurement object 3 by T _b. In the case of this contact-type temperature measuring device, since it has a degree of freedom movable in three directions with respect to the bar-shaped arm 5, good contact can be obtained even with the measuring object 3 whose surface undulates like a hot strip. In addition, the material of the measuring object 3 is not adhered.

In this embodiment, the case where the contact portion 6 is swingable has been described. However, the contact portion 6 is swingably supported by an elastic member such as a leaf spring or a coil spring instead of the pivot portion 8. You may do it.

Next, a description will be given of temperature measurement by the contact type temperature measuring device. First, when the actual temperature of the measurement object 3 can be predicted, the preheating sheath heater 10 heats the temperature of the temperature measurement elements 9a and 9b in advance so as to match the actual temperature. What is necessary is just to measure the temperature of the measuring object 3 while eliminating the temperature difference between. This can prevent the contact 2 from depriving the measurement target 3 of heat.

[0021] On the other hand, when the substantial temperature of the measurement object 3 can not be predicted in advance without heating in the preliminary heating sheath heater 10, first the temperature measurement of the measurement object 3 by the temperature measuring section T _b of the temperature measurement element 9b provides temperature measurement parts T _P, the temperature measurement of the measurement object 3 is heated to a temperature measuring element 9a that temperature is the temperature near measured by the temperature measuring element 9b by preheating the sheathed heater 10 and subsequently Just do it.

In any case, since the temperature measuring element 9b is embedded in the buffer member 4, the actual temperature of the measuring object 3 can be measured quickly and with high accuracy.

[0023]

As described above, according to the contact-type temperature measuring device of the present invention, the preheating sheath heater for preheating the temperature measuring means is provided on the support portion, and the preheating sheath heater is provided between the supporting portion and the body temperature of the object to be measured. Since the temperature difference is compensated, the temperature of the object to be measured can be measured accurately and quickly. Furthermore,
Since the contact is swingably attached to the tip of the support portion, the temperature can be measured with higher accuracy while being in close contact with the measurement object whose surface is undulating.

[Brief description of the drawings]

FIG. 1 is a partial sectional side view showing a basic configuration of a contact-type temperature measuring device according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional side view of the contact-type temperature measuring device shown in FIG. 1 in another direction.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support part 2 Contact 3 Measurement object 4 Buffer material part 5 Arm 5a Flange 6 Contact part 6a Flange stopper 7 Outer frame (cover) 8 Pivot part 9a, 9b Temperature measuring element 10 Preheater sheath heater 51 Spring 52 Fixed spacer 53 Movable spacer

Claims (2)

(57) [Scope of request for utility model registration] 1. A contact-type temperature measuring device comprising: a contact provided with a temperature measuring means; and a supporting portion for supporting the contact, wherein the contact-type temperature measuring device comes into contact with an object to be measured and measures the temperature thereof. The temperature measuring means is embedded and includes a buffer member for buffering the contact with the object to be measured, and the supporting section is provided with heating means for preheating the temperature measuring means. Characteristic contact type temperature measuring device. 2. The contact-type temperature measuring device according to claim 1, wherein said contact is swingably attached to a tip of said support portion.