CN87212079U

CN87212079U - Surface temp. sensor for toasting vat and roller

Info

Publication number: CN87212079U
Application number: CN 87212079
Authority: CN
Inventors: 黎宁
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-08-18
Filing date: 1987-08-18
Publication date: 1988-09-14

Abstract

The utility model relates to a surface temperature sensor for a toasting vat and a roller, which is used for the detection of the surface temperature of the rotary circular arc object in the industries, such as paper making, plastic, rubber, textiles, etc. The utility model can directly contact with the surface which is measured the temperature through adopting heat insulation and the rolling function of the roller in the heat conducting balance way. The temperature-sensing element is made to rapidly sense the temperature; the frictional heat buildup occurred while conducting the direct contact and measuring the temperature can be solved; the heat radiating problem of the sensor, the smoothness problem caused by wearing the rotary object, and the clogging problem caused by the surface adhering sundries can be totally solved.

Description

Surface temp. sensor for toasting vat and roller

The utility model is to measure rotation circular arc body surface medial temperatures such as rotation drying cylinder, roll; The sensor device of a kind of continuous coverage of measurement range 0-300 ℃.

In the working continuously of industries such as papermaking, plastics, rubber, weaving, using the circular arc object of rotations such as many drying cylinders, roll, the stability of these rotation circular arc body surface temperature all has very big influence to the output and the quality of product.Want stable rotation circular arc body surface temperature, need to use varitrol, and the prerequisite that varitrol is used needs reliable detection device continuously exactly.

According to light industry publishing house, the introduction of " pulp and paper industry robotization " the 128-132 page or leaf that publish in January, 1981 and " instructions of roller surface temperature sensor " of Nanchang instrument and meter for automation factory etc.To the detection of rotation circular arc body surface temperature, when continuous coverage, use contactless surface temperature sensor at present.It utilizes fluid mechanics and radiant type method, measures apart from the radiation heat air-flow between the 0.2-0.4 millimeter of rotating object surface, and adds the value of accuracy table temperature indicating degree.Because of radiation heat air-flow heat transfer lag is big, the spacing of sensor and rotation circular arc body surface adheres to the obstruction of little foreign material because of the circular arc body surface, cause spacing can't keep stable, the irregular variation of temperature value that appearance measures, modified value can't add, and making quick and precisely, thermometric produces difficulty.Be used in the use monitor with reference to being feasible, be used to do the detecting element of varitrol, can make varitrol be difficult to achieve the goal.

The purpose of this utility model is to provide a kind of, and directly contact rotation circular arc body surface carries out the sensor device that continuous detecting is rotated circular arc body surface medial temperature.It can measure rotation circular arc body surface temperature more accurately, do not damage rotation circular arc body surface smooth finish, it is little to measure hysteresis, behind the different temperature-sensing elements of configuration (as: thermal resistance, thermopair and other temperature-sensing element), can export different signals, use to adapt to indicating instrument, varitrol and robot calculator.

The purpose of this utility model is achieved in that the tumbling-type sensor of making of small size and the good material of thermal conductivity, under insulation, make the tumbling-type sensor directly contact rotation circular arc body surface, in the process of directly contact with the effect of heat conduction and temperature difference balance, immediately following changing with rotation circular arc body surface temperature, keep uniform temp, and make the temperature-sensing element in the sensor export corresponding temperature signal, use for indicating instrument, varitrol and robot calculator.

The utility model adopts small size to roll and heat insulation structure, has reduced heat balance time, reaches the little effect of thermometric lag, has overcome rotation circular arc body surface and has adhered to the influence that little foreign material block.The effect that rotation is rolled makes friction force be reduced to bottom line, plays and does not damage rotation circular arc body surface smooth finish and increased heat transfer area, has guaranteed that heat conduction finishes temperature difference balance fast.Because the starting point is not overcoming on the generation heat that self rolls, so self structure is simple.

Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof.

Fig. 1 is according to the drying cylinder that the utility model proposes, the sectional view of roller surface temperature sensor.

Fig. 2 is according to the work synoptic diagram that the utility model proposes.

Below in conjunction with Fig. 1, Fig. 2 describes details and the working condition according to the concrete device that the utility model proposes in detail.

The utility model to be by the son (1) that rolls, the sub-bolster (2) that rolls, heat insulation supporting (3), temperature-sensing element (4), fixing pole (5), six major part compositions such as the lead-in wire of temperature-sensing element (6) etc.s.

The direct contact that the utility model is surperficial with rotation circular arc object (7) is to use the outside surface of the son (1) that rolls near rotation circular arc object (7) surface.The sub-bolster of rolling (2) supporting is arranged in the rolling sub (1), roll sub (1) can be rotated as the rolling of bearing.The sub-bolster (2) that rolls is fixing by heat insulation supporting (3); It is actionless for the son that rolls (1).Have one to adapt to the hole of placing temperature-sensing element on the sub-bolster (2) that rolls, place temperature-sensing element (4) in the hole, after temperature-sensing element (4) was put into, appearance can add the elastic copper sheet filling when loosening fixing.The extension line (6) of temperature-sensing element (4) is to extract in heat insulation supporting (3), fixed support (5) pipe.Dispose different temperature-sensing element (as: thermal resistance, thermopair and other temperature-sensing element), can export different signals.

When the son (1) that rolls directly contacts rotation circular arc object (7) surface, at the same time in Xuan Zhuan the process, must produce friction force, roll son (1) under the effect of friction force, with the sub-bolster (2) that rolls is that ground, the center of circle produces the rotation rolling, in the process that high speed rotating rolls, son (1) outside surface that rolls contacts rotation circular arc object (7) surface uniformly, reaches thermal equilibrium by the contact temperature difference between the two fast in heat conducting mode.For guaranteeing the Rapid Thermal balance, the utility model adopts very little (for tested rotation circular arc object (7)) of volume and heat insulation method, and the thermal equilibrium process of the whole temperature difference is only carried out in the scope of small size, little quality.The son (1) and the fricative heat of sub-bolster (2) that rolls roll, equally also in temperature difference heat conductive equilibrium mode fast, reach the control that is subjected to measured rotation circular arc object (7) surface temperature fully, when rotation circular arc object (7) surface temperature is lower than the fricative temperature of the utility model, thermolysis is played on rotation circular arc object (7) surface, when being higher than its surface temperature, the utility model absorbs heat, dispelled the heat or absorbed in the process of heat, temperature of the present utility model changes immediately following the temperature with measured rotation circular arc object (7) surface, thereby reaches the effect of measuring rotation circular arc object (7) surface temperature.

The effect of the utility model rotary rolling has reduced frictional force, when reducing self friction generation heat, play the effect that does not damage rotation circular arc object (7) surface smoothness, improved the impact that overcomes rotation circular arc object (7) surface adhesion little foreign material, little foreign material one roll and mistake between two giies. Directly the conduction of heat of contact reduces heat balance time, is conducive to the realization of automatic regulating system.

When the utility model uses, with criss-cross fixed support (not shown in FIG.) and the fixedly elasticity of pole (5), realization and surperficial the contacting of rotation circular arc object (7) of dependence.

Claims

1, be used for drying cylinder to the measurement of rotation circular arc object (7) average surface temperature, the roller surface temperature sensor, it is characterized in that: be placed with fixed temperature-sensing element (4) in the axle of the sub-bolster (2) that rolls, the diameter of axle is with the son (1) that rolls outward, roll son (1) under the supporting of the sub-bolster (2) that rolls, can be the center of circle with the sub-bolster (2) that rolls, rotation is flexibly rolled, what the sub-bolster (2) that rolls did not rotate is fixed in the heat insulation supporting (3), heat insulation supporting (3) is fixed on the flexible fastening pole (5), the lead-in wire (6) of temperature-sensing element (4) by heat insulation supporting (3) and fixedly the endoporus of pole (5) draw for using.

2,, it is characterized in that making with the good material of thermal conductivity according to rolling (1) of claim 1.

3, according to the sub-bolster of the rolling of claim 1 (2), good material is made to it is characterized in that thermal conductivity, and the fixing hole of an adaptation temperature-sensing element (4) is arranged in the axle.

4,, it is characterized in that heat-barrier material makes according to the heat insulation supporting (3) of claim 1.

5,, it is characterized in that resilient material makes according to the fixedly pole (5) of claim 1.

6, according to the temperature-sensing element (4) of claim 1, it is characterized in that thermal resistance, thermopair, also can be other temperature-sensing element.