CN2134648Y - Sinking-floating comparision densimeter - Google Patents
Sinking-floating comparision densimeter Download PDFInfo
- Publication number
- CN2134648Y CN2134648Y CN 92228354 CN92228354U CN2134648Y CN 2134648 Y CN2134648 Y CN 2134648Y CN 92228354 CN92228354 CN 92228354 CN 92228354 U CN92228354 U CN 92228354U CN 2134648 Y CN2134648 Y CN 2134648Y
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- temperature
- float
- density
- digital display
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Abstract
The utility model discloses a sinking-floating comparison densimeter which belongs to a device for measuring glass density, non-hole solid density and the apparent density of the known stomata solid. The utility model comprises a temperature raise controller which is formed by a water bathtub, a warming part, a stirring part and a temperature measuring part, wherein, the temperature raise controller is connected with a heater; the rate of temperature raise is regulated by a bidirectional controlled silicon triggering circuit; the water bathtub is additionally provided with a sleeve barrel, and an upper end of the water bathtub is covered with a cover plate; the outside of the sleeve barrel of the water bathtub is covered with a metal cover to form a heat preserving system; an inner bore of the heater is provided with an alternating current series existed motor, and bidirectional controlled silicon pulse triggering circuit of a speed regulating controller is connected with the motor to regulate the rotating speed of the motor; a permanent magnet and rotors respectively arranged are arranged on a shaft of the motor to form a magnetic force stirring device; a digital display system for measuring temperature is connected with a thermosensitive probe to display the measured temperature value. The utility model has the advantages of reasonable structure design, stable performance and high measure precision and accuracy.
Description
The utility model belongs to glass density, the measurement mechanism of nonporous solid density and known porosity solid apparent density.Mainly be that prior art constructions has been done improvement.
Sink-float relatively density instrument is kind of a relative measurement glass density device, and utilization glass and organic solution temperature raise 1 ℃ the time, and the two density value descends and differs the principle of about 0.0017g/cm3 and design.There are the glass of production and glass product more than 300 families in the whole nation according to incompletely statistics, if accurately measure glass density by the density instrument, adjustment is in time fluctuateed because of material composition or other reason causes the food ingredient fluctuation, improves glass yield rate and quality, will bring sizable economic worth.
Produce relatively density instrument of all sink-floats at present both at home and abroad, mainly by intensification, thermometric, stir and cleansing bath tub etc. partly constitutes.Utilize the well heater in the cleansing bath tub that warming-in-water is stirred by stirrer, make bath temperature reach balance, utilize mercury thermometer to measure the temperature of water-bath and organic liquor respectively, the key technical indexes that can reach is: measuring accuracy ± 0.0002g/cm3, temperature measurement accuracy 0.1--0.02 ℃, 0.1 ± 0.04 ℃/minute of heating rate, the horizontal temperature difference of water-bath＞0.06 ℃, accuracy of measurement ± 0.0004g/cm3 is in order more accurately to measure glass density, and density instrument manufacturer is all constantly developing and improving both at home and abroad in recent years.As the sinking method density comparator that glass machinery factory in Beijing produces, its heating system adopts controllable silicon or pressure regulator to regulate the rate of heat addition; Temperature-measuring range 0--50 ℃ mercury thermometer, 0.01 ℃ of minority service precision, the Beckman thermometer of measurement range segmentation; Stirring system all adopts mechanical stirrer; Cleansing bath tub adopts the electric trough of glass, and the cleansing bath tub that Other Instruments factory produces and segment glass factory develops is that the capacity of glass blowing is that 4000-15000ml is shaped as circle, square and rectangle.
The sink-float that U.S. AGR company produces is the density instrument relatively, adopts immersion heater, and by rheostat list retaining regulating and controlling heater power, programming rate is 0.6 ℃/minute; Temp measuring system adopts two of mercury thermometers, can read 0.1 ℃ between 0--50 ℃; Stirring system, U.S. AGR company adopts magnetic force to spray and stirs.The cleansing bath tub that U.S.'s ASTMC729 standard is used is " capacity is one in 4000ml beaker "; The instrument that U.S. AGR company produces adopts the cleansing bath tub of a 5000ml.From the result of use of above-mentioned all technology, all there is following deficiency:
1, cleansing bath tub is that the cleansing bath tub range of capacity is too big on the one hand, and capacity is too small, and programming rate is fast, the heating rate of unfavorable accurate adjusting cleansing bath tub; Capacity is excessive, and then intensification is slow, the test duration is long.The 2nd, the cleansing bath tub shape differs, and square and rectangular cleansing bath tub is difficult to realize the transient temperature balance.The 3rd, cleansing bath tub does not have attemperator, because of environment and cleansing bath tub heat interchange are fast, makes the horizontal temperature difference of water-bath bigger.
2, adopt mercury thermometer and Beckman thermometer thermometric, temperature measurement accuracy is poor, and the reading inconvenience.As to use scale division value be that 0.1 ℃ mercury thermometer carries out thermometric, causes that by thermometer temperature deviation reaches 0.1 ℃ approximately.
3, noise is big during electronic stirring, and the bath temperature balance is slow, and vertical temperature-difference reaches 0.03 ℃.
4, adopt immersion heater, all there is one-way SCR length heat time heating time in temperature elevation system and the working current instability; The big adjusting firing rate of rheostat volume is inaccurate.
The purpose of this utility model provides relatively density instrument of a kind of improved sink-float, by realizing cleansing bath tub insulation and stable accurate, the thermometric magnetic stirring apparatus of intensification, makes it to reach glass density and measures precision.
For achieving the above object, technical solution of the present utility model is that it is connected with well heater (10) in instrument panel (12) circular hole at intensification controller (15), regulates well heater (10) heating rate by the bidirectional triode thyristor trigger circuit; And on circular hole, be placed with the sleeve (7) that can contain circular hole and cleansing bath tub (6), its upper end adds a cover plate (1), outside sleeve (7), also be covered with metal cap (2) formation heat-insulation system well heater (10) endoporus bottom and be provided with interchange series excited machine (11), it links to each other with speed setting controller (14), regulate series excited machine (11) rotating speed by the bidirectional triode thyristor trigger circuit, make it to be equipped with on the motor shaft permanent magnet (9) and constitute magnetic stirring apparatus with the rotor (8) that sets up separately; It is connected digital display temp measuring system (13) with thermosensitive probe (3,4), is used for showing the mensuration temperature.
The utility model has compared to existing technology; The cleansing bath tub attemperator, digital display sensor thermometric, stable magnetic stirring apparatus and employing bidirectional triode thyristor come the regulating and controlling temperature elevation system, the technical indicator that makes it to reach is that temperature shows that minimum division value is 0.001 ℃, temperature display precision≤0.01 ℃, the horizontal temperature difference≤0.01 of water-bath ℃, vertical temperature-difference≤0.03 a ℃ heating rate is better than 0.10 ± 0.02 ℃/minute, measuring accuracy≤0.0001g/cm3, the measurement standard exactness≤± 0.0002g/cm3.
The drawing explanation of accompanying drawing:
Fig. 1 compares the structural representation of density instrument for the utility model sink-float.
Fig. 2 is structure of cover plate figure.
Fig. 3 is a digital display temp measuring system block diagram.
Fig. 4 is a magnetic agitation governing system electrical schematic diagram.
Fig. 5 is a heater power control system electrical schematic diagram.
Embodiment is described in further detail in conjunction with the accompanying drawings:
See accompanying drawing 1,2 show the relatively inner structure of density instrument of sink-float, be equipped with well heater 10 in the circular hole of these instrument panel 12 upper surfaces, be used for heated water bath cylinder 6, in the groove by an annular heating plate resistance wire being housed constitutes, and be connected the heating rate of regulating well heater 10 by controller 15 bidirectional triode thyristor trigger circuit with intensification controller 15 and make heating rate can reach 0.1 ± 0.005 ℃/minute, in the bottom of ring heater 10 endoporus an interchange series excited machine 11 is installed also, one symmetry or permanent magnet 9 in the form of a ring are fixed on the supporting plate of tape spool cover, be respectively N, the S utmost point, be installed on the motor shaft by axle sleeve, the rotor 8 that is located at cleansing bath tub 6 inner bottom parts with branch constitutes magnetic stirring apparatus, speed setting controller 14, it is connected with series excited machine 11, regulate the rotating speed of series excited machine 11 by controller bidirectional triode thyristor pulsed triggering circuit, utilize the magnet rotation to produce alternating magnetic field, the rotor 8 rotation stirring current that order about in the cleansing bath tub 6 roll.Be placed with circular glass sleeve 7 on the circular hole of instrument panel 12, can make 7 in cleansing bath tub 6 and sleeve leave the gap after being inserted in, and place the upper port of cleansing bath tub 6 and sleeve 7 with a cover plate 1 that has boss, the boss cover plate 1 of seeing accompanying drawing 2 radially has five identical circular holes and is used for inserting test tube 5, make it to have formed between cleansing bath tub 6 and the sleeve 7 that static insulation gas blanket has prevented by environment and the cleansing bath tub temperature difference and the heat interchange that produces, in order to reach better heat insulation effect, also be with metal cap 2 in its sleeve 7 outsides, and, be provided with view window 16 at metal cap 2.
Fig. 3 illustrates this digital display temp measuring system block scheme.The thermosensitive probe (3,4) that two thermometrics are used inserts respectively in the test tube of cover plate 1 upper density solution and water, and be provided with the thermometric K switch, constitute digital display temp measuring system 13 by operational amplifier, A/D converter, clock circuit, section decoder driver circuit, numerical digit driving circuit, digital display circuit, digital display window, show the temperature of measuring.
Fig. 4 shows magnetic agitation governing system electrical schematic diagram.Form the bidirectional triode thyristor trigger circuit by diode D1--D2R1, R2, R3, C1, C2, C3, BG, wherein W is the pressure regulation potentiometer, power switch K.After power supply is connected by K, when the bidirectional triode thyristor BG control utmost point does not add suitable control voltage, bidirectional triode thyristor does not trigger, series excited machine 11 does not rotate, when adjusting potentiometer W, diode D1, D2 are added to BG gate voltage variation rising and reach the bidirectional triode thyristor triggering, BG conducting, series excited machine 11 work.
Heater power control system electrical installation principle shown in Figure 5, as previously mentioned, load end is well heater R, and is connected to reometer A and voltage table V.Same when bidirectional triode thyristor triggers, BG conducting, well heater 10 heating.
Claims (5)
1, sink-float compares the density instrument, comprise that cleansing bath tub, intensification, stirring, temperature measurement fraction constitute, it is characterized in that heating up controller (15) it is connected with well heater (10) in instrument panel (12) circular hole, by bidirectional triode thyristor trigger circuit adjusting well heater (10) heating rate; And be placed with the sleeve (7) that can contain circular hole and cleansing bath tub (6) on circular hole, its upper end adds a cover plate (1), also is covered with metal cap (2) and forms heat-insulation system outside sleeve (7); Well heater (10) endoporus bottom is provided with and exchanges series excited machine (11), it links to each other with speed setting controller (14), regulate series excited machine (11) rotating speed by the bidirectional triode thyristor trigger circuit, make it to be equipped with on the motor shaft permanent magnet (9) and constitute magnetic stirring apparatus with the rotor (8) that sets up separately; Digital display temp measuring system (13), it is connected with thermosensitive probe (3,4), is used for showing the mensuration temperature.
2, compare the density instrument by the described sink-float of claim 1, it is characterized in that cover plate (1) is a boss shape, radially have five identical circular holes and a center pit.
3, compare the density instrument by the described sink-float of claim 1, it is characterized in that being fixed on the permanent magnet (9) on the supporting plate, can be provided with symmetrical or ringwise, be respectively the NS utmost point.
4, compare the density instrument by the described sink-float of claim 1, it is characterized in that heating plate is an annular, basal surface has groove.
5,, it is characterized in that digital display temp measuring system (13) is made up of operational amplifier, A/D converter, clock circuit, section decoder driver circuit, numerical digit driving circuit, digital display circuit, digital display window by the described sink-float of claim 1 density instrument relatively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92228354 CN2134648Y (en) | 1992-07-19 | 1992-07-19 | Sinking-floating comparision densimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92228354 CN2134648Y (en) | 1992-07-19 | 1992-07-19 | Sinking-floating comparision densimeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2134648Y true CN2134648Y (en) | 1993-05-26 |
Family
ID=33772038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92228354 Expired - Fee Related CN2134648Y (en) | 1992-07-19 | 1992-07-19 | Sinking-floating comparision densimeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2134648Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455680A (en) * | 2019-09-02 | 2019-11-15 | 蚌埠中光电科技有限公司 | A kind of test device of glass density |
| CN113019213A (en) * | 2021-03-04 | 2021-06-25 | 天津拓至明实验仪器设备有限公司 | Water bath test or inspection device |
-
1992
- 1992-07-19 CN CN 92228354 patent/CN2134648Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455680A (en) * | 2019-09-02 | 2019-11-15 | 蚌埠中光电科技有限公司 | A kind of test device of glass density |
| CN113019213A (en) * | 2021-03-04 | 2021-06-25 | 天津拓至明实验仪器设备有限公司 | Water bath test or inspection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |