CN1287132C - Contraction temp analyzer having digital indication, its testing method and application - Google Patents
Contraction temp analyzer having digital indication, its testing method and application Download PDFInfo
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- CN1287132C CN1287132C CN 200410022182 CN200410022182A CN1287132C CN 1287132 C CN1287132 C CN 1287132C CN 200410022182 CN200410022182 CN 200410022182 CN 200410022182 A CN200410022182 A CN 200410022182A CN 1287132 C CN1287132 C CN 1287132C
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- shrinkage temperature
- machine box
- circuit
- lifting screw
- cabinet
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Abstract
The present invention relates to a digital display shrinkage temperature tester and a testing method thereof and an application. The present invention is characterized in that a lifting work table (6) is arranged in a machine box, the work table is connected with a lifting screw (22), the lifting screw is driven by a transmission mechanism to be lifted or lowered, a control plate (2) is arranged outside the machine box, a powder supply input socket (17) and a powder supply switch (18) are arranged on the side surface of the machine box, a supporting arm (9) is arranged on the machine box, one end of the supporting arm is connected with an upper machine box (7), a shrinkage temperature testing device (5) is arranged in the upper machine box, a work indicating lamp (3), a micro-motion contact head switch-regulating button (4) and a water vapor outlet hole (8) are arranged outside the upper machine box, the other end of the supporting arm is connected with the machine box (1), a voltage-stabilizing power supply circuit formed by an electronic element is arranged in the machine box (1), and the whole of the shrinkage temperature tester is formed by the connection of an amplifier circuit and an arithmetic circuit. The present invention has the advantages of high sensitivity for testing end points and good reproducibility, the error of testing precision is smaller than 0.1 DGE C, the speed of temperature rise is regulated in 2 tp 5 DEG C /min, and the present invention can be suitable for a plurality of purposes from room temperature to 150 DGE C.
Description
Technical field
The present invention relates to a kind of numeral and show shrinkage temperature tester and uses thereof, belong to the loose material shrinkage temperature field tests of being heated.
Background technology
Shrinkage temperature is to weigh the important indicator of certain material heat-resistant stability, the temperature when promptly material is subjected to heat effect generation moment drawdown deformation, i.e. shrinkage temperature.Shrinkage temperature also is collagenous fibres, animal skins, or animal skins is through after the different chemical treatments, the quantificational expression method of its structural stability, chemical action also is an important method of weighing the thermal stability of the biomaterial made from animal skins or collagen after modification is handled.Accurately the shrinkage temperature of working sample is research process hides theory, exploitation tanning agent and other process hides chemical materials and studies and defines the very important evaluation means of leather-making technology process.Shrinkage temperature also is to estimate an important indicator of finished product leather quality.
At present domestic and international its principle of existing detection method is identical, all with sample under fully wetting situation, temperature when obviously contraction takes place of being heated in water-bath, glycerine or oil bath is as the shrinkage temperature of sample.But different because of detecting instrument, its measurement result differs greatly.Its major defect shows:
1. the speed of heating medium intensification is uncertain, and programming rate alters a great deal.Sample is subjected to the situation difference of heat effect, causes the shrinkage temperature value of sample widely different;
2. the accuracy disunity of temperature indication.Existing instrument is all with the thermometer indication, but its indication difference of different thermometers can reach positive and negative 1～2 ℃;
3. the degree of sample drawdown deformation (promptly observing terminal point) is uncertain.The shrinkage temperature tester of standard GB 46898-84 regulation leather adopts water-bath or oil bath as heating medium, measures terminal point and exceeds with first mate's degree deflection of pointer.Rotate by line drive garden dish runner because of the contract by distance that the sample drawdown deformation is produced, cause needle deflection.The amplitude of needle deflection is subjected to influence of various factors, and these factors are all uncertain, and " significantly " itself is exactly a fuzzy concept in addition, causes measuring terminal point reading temperature difference and reaches 3～5 ℃.Its reason:
(1) measurement result has very big factor and individual subjective factor;
(2) must have operating personnel to wait in the mensuration process, time-consuming, energy consumption is big;
(3) instrument simple coarse has many condition of uncertainty, causes the comparability of testing result too poor.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, and a kind of digital display type precision shrink temperature-indicating instrument and method of testing thereof are provided.Be characterized in adopting microcomputer control programming rate, heater element, worktable lifting, numeral shows programming rate, probe temperature, the temperature when writing down the sample contraction automatically.
Numeral of the present invention shows that shrinkage temperature tester comprises cabinet, sway brace and upper case, wherein, establish self-powered platform in the cabinet, self-powered platform is connected with lifting screw, lifting screw is driven by gear train and rises or descend, cabinet peripheral hardware control panel power input socket and power switch, establish sway brace on the cabinet, the other end of sway brace connects upper case, establish the shrinkage temperature proving installation in the upper case, upper case peripheral hardware relay indicating light, fine motion switch contacts regulating spring and draining steam vent also are provided with the voltage-stabilized power supply circuit that is formed by electronic devices and components in the cabinet, amplifier circuit and computing circuit, foregoing circuit connect into shrinkage temperature tester integral body.
The shrinkage temperature proving installation is made up of band scale test cup, stationary fixture, floating holder, well heater, temperature sensor, sample, contraction signal contact and fine motion switch contacts regulating spring.
The gear train of lifting screw by motor, motor pulley, lifting screw belt pulley, spacing contact rises; Spacing contact and support composition descends.
Amplifier circuit is made up of amplifier and follower.
Voltage-stabilized power supply circuit is made up of full-bridge circuit, filtering and voltage stabilizer.
Adopt above-mentioned numeral to show that method of operating contained following steps when shrinkage temperature tester was measured shrinkage temperature:
1. with straight steel ruler and cutter measured object is cut into the sample of length * wide=60～70 * 3～5mm;
2. the power-on switch is regulated required heat temperature raising speed;
3. the sample to be tested level is clipped, according to the demonstration of the relay indicating light on the instrument, regulate sample and make it straight, and keep relay indicating light bright;
4. in the test cup, add 470～530ml heating medium, as: water, glycerin liquid or other liquid heat-transfer mediums are placed on the lifting table;
5. press the startup key point, lifting table rises to the precalculated position automatically, heating tube begins heating, display screen shows the temperature value of test system in good time, and when sample was heated the generation contraction, live splint drove microswitch, instrument is received this signal and is stopped heating immediately, temperature when reserve sample shrinks on the display screen, lifting table falls back to initial position automatically simultaneously, and test finishes.
Numeral shows the purposes of shrinkage temperature tester:
This instrument is mainly used in animal skins, leather, and the mensuration of animal skins its shrinkage temperature after various chemicalss are handled.Shrinkage temperature as each operation skin and leather in the various biomaterials that make by the animal skins modification, collagen membrane material, the process hides process.For investigate and relatively the moisture-proof thermal stability-shrinkage temperature of above-mentioned material easy method of testing and science data reliably are provided.
The present invention has the following advantages:
1. the speed of thermal medium intensification is adjusted in 2～5 ℃ of/minute scopes, and programming rate remains unchanged.
2. the test terminal point is highly sensitive, favorable reproducibility, measuring accuracy ± 0.1 ℃.Temperature survey, indication range: room temperature to 150 ℃ can adapt to multiple use.
3. visual result readability, the automaticity height.
4. energy-conservation, heating power 300W.
5. overcome the error that is caused because of the coarse and factor and individual subjective factor of instrument institute, and the saving plenty of time.
6. digital display type precision shrink temperature-indicating instrument of the present invention still is the defective that has all overcome tradition and present shrinkage temperature tester on measurement result at assay method, makes the mensuration of sample shrinkage temperature more accurate.The present invention is expected to be used for the standardization of leather production run and the detection of finished product leather quality.
Description of drawings
Fig. 1 is that numeral shows the shrinkage temperature tester structural representation
1 cabinet, 2 control panels, 3 relay indicating lights, 4 fine motion switch contacts adjusting knobs, 5 shrinkage temperature proving installations, 6 self-powered platforms, 7 upper cases, 8 draining steam vents, 9 sway braces, 10 display screens, 11 check keys, 12 increase key, 13 and reduce key, 14 reset keys, 15 speed keys, 16 start keys.
Fig. 2 is a self-powered platform gear train synoptic diagram
19 motors, 20 motor pulleys, 21 lifting screws, 22 lifting screw belt pulleys, the spacing contact of 23 risings, 24 descending spacing contacts, 25 supports.
Fig. 3 is a shrinkage temperature proving installation synoptic diagram
26 band scale test cups, 27 stationary fixtures, 28 floating holders, 29 well heaters, 30 temperature sensors, 31 samples, 32 contraction signal contacts, 33 fine motion switch contacts regulating springs.
Fig. 4 is the shrinkage temperature tester schematic block circuit diagram.
Fig. 5 is the shrinkage temperature tester circuit theory diagrams.
Embodiment
Below by embodiment the present invention is specifically described; be necessary to be pointed out that at this present embodiment only is used for the present invention is further specified; can not be interpreted as limiting the scope of the invention, the person skilled in the art in this field can make some nonessential improvement and adjustment according to the content of the invention described above.
Embodiment
Numeral shows that shrinkage temperature tester is shown in Fig. 1～5, it comprises establishes self-powered platform 6 in the cabinet 1, self-powered platform 6 is connected with lifting screw 21, lifting screw 21 is driven by gear train and rises or descend, cabinet 1 peripheral hardware control panel 2, power supply input and power switch are established in the side of cabinet 1, establish sway brace 9 on the cabinet 1, the other end of sway brace 9 connects upper case 7, installing shrinkage temperature determinator 5 in the upper case 7, upper case 7 peripheral hardware relay indicating lights 3, fine motion switch contacts adjusting knob 4 and draining steam vent 8, also be provided with the voltage-stabilized power supply circuit that forms by electronic devices and components in the cabinet 1, amplifier circuit and computing circuit, foregoing circuit connect and compose shrinkage temperature tester integral body.
As shown in Figure 1, establish display screen 10, check key 11, increase key 12, minimizing key 13, reset key 14, speed key 15 and start key 16 on the control panel 2.
As shown in Figure 2, the gear train of lifting screw is made up of motor 19, motor pulley 20, lifting screw belt pulley 22, the spacing contact 23 that rises, the spacing contact 24 of decline and support 25.The also available worm screw of lifting screw, the direct transmission of worm gear.
As shown in Figure 3, shrinkage temperature proving installation 5 is made up of band scale test cup 26, stationary fixture 27, floating holder 28, electric heater 29, temperature sensor 30, sample 31, contraction signal contact 32 and fine motion switch contacts regulating spring 33.
As shown in Figure 4, numeral shows that shrinkage temperature tester contains the controlled by single chip microprocessor unit, and mnemon direct-connected with it, display unit, key-press input unit, input optocoupler unit, output optocoupler unit and power supply processing unit.Mu balanced circuit is supplied with stabilized power source; the test starting button is connected with the input optocoupler with the contact signal; its signal is handled through single-chip microcomputer and is passed to the output optocoupler, and the output optocoupler drives lifting table by relay output and protective device control motor forward and backward and rises or descend, and the opening or closing of well heater.
As shown in Figure 5, the electronic devices and components that are loaded in the cabinet 1 form two groups of electronic circuits, one group is that voltage-stabilized power supply circuit is made up of D1 diode full bridge rectifier, filtering circuit and mu balanced circuit, C1～C6 is a filter capacitor, high fdrequency component in the filter out power, ID1 and ID2 form two groups of mu balanced circuits, make output voltage be+6V, supply with CC1, IC1, IC2, IC3 and IC4.Another group is formed mu balanced circuit by D2 diode full bridge rectifier and C12, C13, C14 and ID3, makes output voltage be+5V, supplies with mnemon IC5 stable power and ensures its memory function.
The power of well heater W2, the control that is programming rate is made of temperature sensor CC1 and instrumentation amplifier IC1, IC2, adjustable resistance W1 and instrumentation amplifier IC3, IC4 and mnemon IC5, by IC4 the programming rate key on the control panel 15 and well heater 29, contraction signal contact 32, relay indicating light 3 is connected into complete control system.On-off action is realized by mnemon IC5, working signal lamp 3, contraction signal contact 32, startup button 16 and upper limit position switch 23, the pilot relay WK1 of instrumentation amplifier IC4 and connection thereof.
The startup button 16 that the operation of self-powered platform is connected by IC4, upper limit position switch 23 and lower position switch 24, contraction signal contact 32 and the motor D system that is connected with WK2, WK3 finish.The stabilized power source of the mu balanced circuit supply+6V that digital display circuit is made up of D1 diode full bridge rectifier and C1～C6, ID1 and ID2, form holonomic system by temperature sensor CC1, instrumentation amplifier IC1, IC2, IC3, IC4, after instrumentation amplifier IC1, IC2 and IC3 processing, pass to IC4 by the signal that temperature sensor CC1 gathers, directly pass to digital display unit by IC4 again and finish the numeral demonstration.
Claims (4)
1. a numeral shows shrinkage temperature tester, comprise cabinet (1), sway brace (9) and upper case (7), it is characterized in that: establish self-powered platform (6) in the cabinet (1), self-powered platform (6) is connected with lifting screw (21), lifting screw (21) is driven by gear train and rises or descend, cabinet (1) peripheral hardware control panel (2), power input socket and power switch are established in the side, establish sway brace (9) on the cabinet (1), the other end of sway brace (9) connects upper case (7), installing shrinkage temperature proving installation (5) in the upper case (7), upper case (7) peripheral hardware relay indicating light (3), fine motion switch contacts adjusting knob (4) and draining steam vent (8), cabinet also is provided with the voltage-stabilized power supply circuit that is formed by electronic devices and components in (1), amplifier circuit and computing circuit, foregoing circuit connects and composes shrinkage temperature tester integral body, wherein, shrinkage temperature proving installation (5) is by band scale test cup (26), stationary fixture (27), floating holder (28), well heater (29), temperature sensor (30), sample (31), contraction signal contact (32) and fine motion switch contacts regulating spring (33) are formed, the gear train of lifting screw (21) is by motor (19), motor pulley (20), lifting screw belt pulley (22), spacing contact (23) rises, descend spacing contact (24) and support (25) formed, and control panel (2) is provided with display screen (10), check key (11), increase key (12), reduce key (13), reset key (14), speed key (15) and start key (16).
2. numeral as claimed in claim 1 shows shrinkage temperature tester, and it is characterized in that: described amplifier circuit is made up of amplifier and follower.
3. numeral as claimed in claim 1 shows shrinkage temperature tester, and it is characterized in that: described voltage-stabilized power supply circuit is made up of full-bridge circuit, filtering and voltage stabilizer.
4. numeral as claimed in claim 1 shows the purposes of shrinkage temperature tester, it is characterized in that: this shrinkage temperature tester is used for animal skins, leather and animal skins are handled the post shrinkage temperature through various chemicalss mensuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410022182 CN1287132C (en) | 2004-04-01 | 2004-04-01 | Contraction temp analyzer having digital indication, its testing method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410022182 CN1287132C (en) | 2004-04-01 | 2004-04-01 | Contraction temp analyzer having digital indication, its testing method and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1563963A CN1563963A (en) | 2005-01-12 |
| CN1287132C true CN1287132C (en) | 2006-11-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410022182 Expired - Fee Related CN1287132C (en) | 2004-04-01 | 2004-04-01 | Contraction temp analyzer having digital indication, its testing method and application |
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| Country | Link |
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| CN (1) | CN1287132C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019925A (en) * | 2014-05-15 | 2014-09-03 | 李明科 | Temperature-resistance performance detection device for temperature sensor |
| CN106222399B (en) * | 2016-07-19 | 2019-10-29 | 中冶长天国际工程有限责任公司 | A kind of sintering process monitoring device and sintering machine |
| CN109115643B (en) * | 2018-07-12 | 2019-08-30 | 深圳天溯计量检测股份有限公司 | A kind of leather heat resistance experiment test equipment |
| CN110208310A (en) * | 2019-06-14 | 2019-09-06 | 陕西科技大学 | A kind of contactless flexible material shrinkage temperature measuring method and device |
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2004
- 2004-04-01 CN CN 200410022182 patent/CN1287132C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1563963A (en) | 2005-01-12 |
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Granted publication date: 20061129 |