CN2548156Y

CN2548156Y - Double metal-piece type-characteristic testing apparatus

Info

Publication number: CN2548156Y
Application number: CN 02270901
Authority: CN
Inventors: 陈伟民
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-10
Filing date: 2002-06-10
Publication date: 2003-04-30
Anticipated expiration: 2012-06-10

Abstract

A detecting device for temperature property of bimetallic strip is provided with a heating stage (6). The heating stage (6) is provided with a heating pit (4) used to place the bimetallic strip. The utility model is characterized in that the heating stage (6) is a thermal superconducting heating stage heated by an electrical heating tube (1). The heating stage is provided with a temperature sensor (2). A moveable cover plate (7) is buttoned above the heating stage. A group of sound controlling switch circuit (9) correspondingly one to one with the heating pit is also arranged on the heating stage. A sound sensor (8) connected with the input end of every sound controlling switch circuit is installed respectively on the position being opposite to the moveable cover plate. The utility model has the advantages of high detecting accuracy, high efficiency, energy saving, convenience and no noise.

Description

Bimetallic strip temperature performance pick-up unit

Technical field

The utility model belongs to a kind of pick-up unit that is used to detect the bimetallic strip temperature performance.

Background technology

Bimetallic strip is the driving element of Kick type temperature controller, protector; its temperature performance one is the accuracy of operating temperature and reset temperature; determined the degree of accuracy of Kick type temperature controller, protector, the enterprise that therefore produces Kick type temperature controller, protector just need be detected the temperature performance of bimetal disk element and be controlled.Because bimetallic strip action or the deflection when resetting have only between 0.2～0.5mm usually; be difficult to gather the deformation information of moment; so in the check that existing manufacturing enterprise produces in batches; all be difficult to detect the operating temperature value of each video disc element; and can only select the approximate range (for example 100 ℃+2 ℃) of a collection of video disc element operating temperature with the method for sorting; and reset temperature more can't detect; the control that this has just influenced Kick type temperature controller, protector quality causes the waste of manpower and materials in the production run simultaneously.Bimetal disk varies with temperature except that deformation signal is arranged, and when deformation took place, the signal of also can sounding was not also determined the bi-metal plate deformed temperature by detecting voice signal at present.

Summary of the invention

The technical problems to be solved in the utility model provides a kind of bimetallic strip temperature performance pick-up unit that can utilize voice signal accurately to detect bimetal disk action and reset temperature.

The technical scheme that addresses the above problem is (referring to implementing illustration): the utility model is provided with warm table (6), warm table be provided with place bimetallic strip add thermal pit (4), it is characterized in that: described warm table (6) is the hot superconduction warm table by electrothermal tube (1) heating, warm table is equipped with temperature sensor (2), the warm table top is buckled with removable cover (7), this device also be provided with one group with respectively add thermal pit sound controling switch circuit (9) one to one, the sound transducer (8) that is connected on each sound controling switch circuit input end is contained in respectively on the removable cover facing to the corresponding position that adds thermal pit.

Principle of work of the present utility model is: utilize hot superconduction warm table to heat being placed on the bimetal disk that respectively adds in the thermal pit, because hot superconductive medium heat conduction is rapid, can make warm table respectively add the temperature uniformity of thermal pit, thereby can under same temperature conditions, detect each bimetallic strip, when a certain bimetallic strip generation deformation, the sound transducer that should heat the hole is detected voice signal, can send switching signal by the sound controling switch circuit of correspondence, cooperate the detected temperatures of temperature sensor this moment, can learn the deformation temperature of this bimetallic strip.

During practical application, can be with the utility model temperature sensor output termination intelligent thermometer, each sound controling switch circuit (9) output terminal is connected with display device, can carry out the personal monitoring, also can be connected with the computer data processor, carry out storing, remembering or export and respectively detect data after the data processing, also the data after data processing can be input to industrial control unit (ICU), whole process control is in real time carried out in the action of heating, cooling and each topworks of this proving installation by industrial control unit (ICU).

Because it is easier and accurate than detecting deformation signal to detect voice signal, so can accurately collect the deformation temperature data of bimetallic strip with the utility model, and the hot superconduction warm table that is adopted can make each tested bimetallic strip heating-up temperature uniformity, video disc is that free state is placed on adding in the thermal pit of warm table in addition, not disturbed by external force, so it is little to detect error, precision can reach in 0.5 ℃, and can in same testing process, record the bimetallic strip action and two temperature values that reset, the utlity model has the accuracy of detection height, the efficient height, energy-conservation, convenient, advantages such as noiselessness.

Description of drawings

Fig. 1, the utility model example structure synoptic diagram

Fig. 2, the utility model embodiment sound controling switch circuit figure

The hot superconductive medium 4-of 1-electrothermal tube 2-temperature sensor 3-adds thermal pit 5-bimetallic strip 6-warm table

7-cover plate 8-sound transducer 9-sound controling switch circuit

Specific embodiments

The structure of the hot superconduction warm table 6 of this example is: its heating table top is arranged on the airtight container external wall of upper portion face made from Heat Conduction Material, hot superconductive medium 3 and electrothermal tube 1 are housed in the airtight container, be inserted with temperature sensor 2 in the annular seal space, the heating table top is provided with the recessed thermal pit 4 that adds, the warm table top is buckled with removable cover 7, on the cover board corresponding each position that adds thermal pit is provided with through hole, sound transducer 8 is housed in the through hole, this routine sound transducer adopts acoustic pickup, acoustic pickup two termination sound controling switch circuits 9 input ends.

This routine sound controling switch circuit is seen Fig. 2, be provided with the power amplification circuit of forming by triode T1, the single-shot trigger circuit input end that power amplification circuit output termination is made up of integrated package 555, single-shot trigger circuit output termination is by the 4013 bistable trigger-action circuit input ends of forming, bistable trigger-action circuit output termination switch transistor T 2 input ends, be in series with relay J in the switching tube output circuit, acoustic pickup two terminates at the power amplification circuit input end, the power amplifier tube base stage is connected to variable resistor RL, be used to regulate the sensitivity that this circuit receives sound control signal, whole sound controling switch circuit is connected on+12 volts of direct supplys between.

This routine course of work is: electrothermal tube 1 is given hot superconduction warm table 6 heat temperature raisings, under the superconductive medium effect, respectively add the temperature that thermal pit has uniformity, when a certain bimetal disk distortion that adds in the thermal pit is overturn, the voice signal that when this acoustic pickup that adds thermal pit receives distortion, sends on the removable cover, be added to the sound controling switch circuit input end, power amplifier tube T1 is input to monostable circuit 555 trigger ends 2 after voice signal is amplified, make single-shot trigger circuit output terminal 3 outputs one energizing signal, be input to 3 ends of bistable circuit 4013, bistable circuit output terminal 1 output level changes, make switch transistor T 2 change original state, be in conducting or cut-off state, and send switching signal by the relay J of output circuit, the displayed value that cooperates the thermometer this moment be connected with temperature sensor can obtain the deformation temperature of this bimetallic strip.

The contact of each sound controling switch circuit output circuit relay of this example can insert display device and carry out the personal monitoring, also can be connected and carry out storing, exporting after the data processing with the computer data processor, also the signal after the data processing can be input to industrial control unit (ICU), with industrial control unit (ICU) the heating of this pick-up unit, cooling and other are carried out action and control in real time, personal monitoring's device or data processor can be according to receiving that the pairing sound controling switch circuit of switching signal offers an explanation the bimetallic strip place of sending signal and add the thermal pit position.

Claims

1, bimetallic strip temperature performance pick-up unit, be provided with warm table (6), warm table be provided with place bimetallic strip add thermal pit (4), it is characterized in that: described warm table (6) is the hot superconduction warm table by electrothermal tube (1) heating, warm table is equipped with temperature sensor (2), the warm table top is buckled with removable cover (7), this device also be provided with one group with respectively add thermal pit sound controling switch circuit (9) one to one, the sound transducer (8) that is connected on each sound controling switch circuit input end is contained in respectively on the removable cover facing to the corresponding position that adds thermal pit.

2, bimetallic strip temperature performance pick-up unit according to claim 1, it is characterized in that: described hot superconduction warm table (6) structure is: its heating table top is arranged on the airtight container external wall of upper portion face made from Heat Conduction Material, hot superconductive medium (3) and electrothermal tube (1) are housed in the airtight container, and the annular seal space interpolation has described temperature sensor (2).

3, bimetallic strip temperature performance pick-up unit according to claim 1 and 2 is characterized in that: described cover plate (7) go up corresponding each add on the position of thermal pit and be provided with through hole, sound transducer (8) is housed in the through hole.