CN102636027A - Constant temperature furnace for rotational viscometer - Google Patents
Constant temperature furnace for rotational viscometer Download PDFInfo
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- CN102636027A CN102636027A CN201210118743XA CN201210118743A CN102636027A CN 102636027 A CN102636027 A CN 102636027A CN 201210118743X A CN201210118743X A CN 201210118743XA CN 201210118743 A CN201210118743 A CN 201210118743A CN 102636027 A CN102636027 A CN 102636027A
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Abstract
The invention discloses a constant temperature furnace for a rotational viscometer in the field of experimental test instrument. The constant temperature furnace comprises a furnace body, a protective cover, a thermal insulation board, a wiring board, a temperature sensor, a controller and a plurality of electrical bars, wherein the electrical bars and the temperature sensor are inserted in the furnace body from the bottom of the furnace body; a hearth is arranged at the radial center of the furnace body, the protective cover surrounds an outer side wall of the furnace body, the thermal insulation board and the wiring board are arranged at the lower side of the furnace body, the wiring board is respectively connected with each electrical bar, and the controller is respectively connected with the wiring board and the temperature sensor. The constant temperature furnace has the following beneficial effects of low thermal inertia and good heating uniformity, and capabilities of quickly responding to a control instruction sent by the controller, accurately controlling the temperature of the tested liquid and improving the accuracy of a viscosity test.
Description
Technical field
The present invention relates to a kind of constant temperature oven that is used for rotation viscometer in experiment test instrument field.
Background technology
Rotation viscometer is a widely used laboratory apparatus in the chemical field.For a lot of liquid; Especially macromolecule melt or Polymer Solution; The very strong sensitiveness that the viscosity of liquid has for temperature, therefore in process, just necessary for the test liquid accuracy control over temperature with rotation viscometer test liquid viscosity.If temperature can not accurately be controlled, must influence the accuracy of viscosity test, and then influence the mensuration of said other physical quantity of test liquid, such as high molecular molecular weight and distribution thereof.
In using rotary viscosity measuring liquid process; The main cause that the temperature of test liquid can't accurately be controlled is with the design of the supporting constant temperature oven of said rotation viscometer unreasonable: on the one hand; Constant temperature oven all is to adopt universal temperature control instrument, can't show the various duties of constant temperature oven intuitively.On the one hand, said constant temperature oven all has been equipped with the aluminium oxide combustion chamber, twines heating wire on the said aluminium oxide combustion chamber in addition, and this has also caused the constant temperature oven heating inhomogeneous, and thermal inertia is big, the temperature control weak effect.Said thermal inertia is meant that the demonstration of temperature control instrument lags behind the phenomenon of said test liquid variations in temperature.
Summary of the invention
The objective of the invention is provides a kind of constant temperature oven that is used for rotation viscometer in order to overcome the deficiency of prior art, and it can overcome the big defective of constant temperature oven thermal inertia that tradition is used for rotation viscometer, improves the accuracy of rotary viscosity measuring liquid viscosity.
A kind of technical scheme that realizes above-mentioned purpose is: a kind of constant temperature oven that is used for rotation viscometer comprises body of heater, protective cover, thermal insulation board, terminal plate, temperature sensor and controller;
Said constant temperature oven also comprises some electrical bars, and said electrical bar and said temperature sensor insert said body of heater from the bottom of said body of heater;
The radial center of said body of heater is provided with burner hearth, and said protective cover is that the lateral wall that centers on said body of heater is provided with, and said thermal insulation board and said terminal plate are arranged at the downside of said body of heater, and said terminal plate is connected respectively with every said electrical bar;
Said controller connects said terminal plate and said temperature sensor respectively.
Further, said terminal plate is positioned at said thermal insulation board downside, and a plurality of apertures are set on the said thermal insulation board.
Further, the bottom of said protective cover is provided with base, and the bottom of said base is provided with base plate, and the bottom of said base plate is provided with horizontal leg.
Further, the quantity of said electrical bar is four.
Further, on the said controller LCDs is set.
Adopted a kind of technical scheme that is used for the constant temperature oven of rotation viscometer of the present invention; Promptly burner hearth is set at the body of heater center; Said bottom of furnace body inserts temperature sensor and some electrical bars; Said electrical bar connects terminal plate, and controller connects the technical scheme of said terminal plate and said temperature sensor.Its technique effect is: the thermal inertia of constant temperature oven is little; Can the instruction of said controller be responded rapidly, and the heating uniformity of constant temperature oven is good, can accurately controls the test liquid temperature; Improved the accuracy of test liquid viscosity, the installation of said constant temperature oven is simultaneously also simplified greatly.
Description of drawings
Fig. 1 is the structural representation of the oven body part of a kind of constant temperature oven that is used for rotation viscometer of the present invention.
The specific embodiment
See also Fig. 1,,, and combine accompanying drawing at length to explain below through specific embodiment in order to understand technical scheme of the present invention better:
See also Fig. 1; In the present embodiment; A kind of constant temperature oven that is used for rotation viscometer of the present invention comprises oven body part and control section, and wherein said oven body part comprises body of heater 10, protective cover 2, thermal insulation board 7, terminal plate 8, temperature sensor 9, four electrical bars 3, base 4, base plate 5 and horizontal legs 6.Said control section comprises controller.
The center of said body of heater 10 is provided with burner hearth, and said burner hearth is to be used for placing being used for the tube for feed 1 of the said test liquid of splendid attire on the rotation viscometer.Said tube for feed 1 can be put into said burner hearth easily or take out from said burner hearth.
A temperature sensor 9 and four electrical bars 3 have been inserted in the bottom of said body of heater 10, and said electrical bar 3 is equally distributed along the circumference of said body of heater 10.Certain said body of heater 10 bottoms are inserted arbitrarily, and many said electrical bars 3 all are fine.
The purpose of design is like this: after said electrical bar 3 inserted said body of heater 10, said electrical bar 3 passed to said tube for feed 1 by said body of heater 10 more earlier with the said body of heater 10 of heat transferred, passes to said test liquid by tube for feed 1 again.
Like this, when said constant temperature oven heats the said test liquid in the said tube for feed 1, be that the inner surface through whole burner hearth heats; And traditional constant temperature oven is used is that heating wire heats the said test liquid in the said tube for feed 1.Compare traditional constant temperature oven, the said test liquid heating surface area in the said tube for feed 1 increases, and has improved the heating uniformity of said constant temperature oven.Simultaneously, than the constant temperature oven of traditional electrical heated filament heating, constant temperature oven of the present invention is installed and is more prone to.
Said thermal insulation board 7 and said terminal plate 8 are arranged at the downside of said body of heater 10, and wherein said terminal plate 8 is positioned at said thermal insulation board 7 downsides, and five apertures are set on the said thermal insulation board 7, and promptly the quantity of said aperture is Duoed one than the quantity of said electrical bar 3.Be connected through lead between said terminal plate 8 and the said electrical bar 3; Pass in every each said aperture on said thermal insulation board 7 of said lead.
The purpose of design is to prevent the scattering and disappearing of heat of said body of heater 10 on the one hand like this, is on the one hand in addition to protect said terminal plate 8 not damage because of the heat radiation of said body of heater 10.
Said protective cover 2 is that the lateral wall that centers on said body of heater 10 is provided with, and the purpose of said protective cover 2 is that the heat that prevents said body of heater 10 scatters and disappears.
Between said protective cover 2 and the said body of heater 10, all be provided with cavity between said body of heater 10 and the said thermal insulation board 7, the purpose of these two said cavitys is further to prevent scattering and disappearing of said body of heater 10 heats.
The bottom of said protective cover 2 is provided with base 4, and the bottom of said base 4 is provided with base plate 5, and the bottom of said base plate 5 is provided with horizontal leg 6.
The effect of said base 4 and said base plate 5 is the distances that strengthen between the level table of said body of heater 10 bottoms and the said constant temperature oven of placement, prevents the damage of said level table.
The effect of said horizontal leg 6 is the levels of regulating said constant temperature oven, and making the bottom surface of said constant temperature oven is parallel with level table, thereby guarantees the level of said rotation viscometer, improves the accuracy of viscosity test.
A kind of control section that is used for the constant temperature oven of rotation viscometer of the present invention comprises controller (Fig. 1 does not show), and said controller is from the Tuning PID Controller device.Said controller directly is connected through lead with said temperature sensor 9, passes the said aperture of this root lead remainder from said thermal insulation board 7.In order to guarantee temperature controlled accuracy, control end and signal end are set respectively on the said controller, with the lead that said control end is connected, connect said terminal plate 8, the lead that is connected with said signal end connects said temperature sensor 9.
Said controller built-in storage chip has the set information that said controller is set in the said storage chip, this set information mainly is meant design temperature.The also built-in comparison circuit of said controller; The actual temperature that said comparison circuit can be automatically records said design temperature and said temperature sensor 9 compares; When said design temperature during more than or equal to said actual temperature; Said controller sends control instruction, and said electrical bar 3 begins the test liquid in the said tube for feed 1 is heated; When said design temperature during less than said actual temperature, said controller sends control instruction, and 3 of said electrical bars stop heating.Said controller is controlled through the temperature of the said test liquid in the said tube for feed 1 of 3 pairs of said electrical bars, has rapidly, accurately characteristics easy to use.
The giant-screen back-light liquid crystal display screen is set on the said controller, and said LCDs can show parameters such as " Current Temperatures ", " design temperature ", " heated condition ", " heating power " respectively.The form that said display screen shows is literal or figure.
A kind of constant temperature oven that is used for rotation viscometer of the present invention; Said controller connects said terminal plate 8; Said terminal plate 8 connects said electrical bar 3, and the another one reason of design is to improve the response speed of said constant temperature oven for instruction that said controller sends like this.
Those of ordinary skill in the art will be appreciated that; Above embodiment is used for explaining the present invention; And be not to be used as qualification of the present invention; As long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of the above embodiment.
Claims (5)
1. a constant temperature oven that is used for rotation viscometer comprises body of heater (10), protective cover (2), thermal insulation board (7), terminal plate (8), temperature sensor (9) and controller; It is characterized in that:
Said constant temperature oven also comprises some electrical bars (3), and said electrical bar (3) and said temperature sensor (9) insert said body of heater (10) from the bottom of said body of heater (10);
The radial center of said body of heater (10) is provided with burner hearth; Said protective cover (2) is that the lateral wall that centers on said body of heater (10) is provided with; Said thermal insulation board (7) and said terminal plate (8) are arranged at the downside of said body of heater (10), and said terminal plate (8) is connected respectively with every said electrical bar (3);
Said controller connects said terminal plate (8) and said temperature sensor (9) respectively.
2. a kind of constant temperature oven that is used for rotation viscometer according to claim 1 is characterized in that: said terminal plate (8) is positioned at said thermal insulation board (7) downside, and said thermal insulation board is provided with a plurality of apertures on (7).
3. a kind of constant temperature oven that is used for rotation viscometer according to claim 1 and 2 is characterized in that: the bottom of said protective cover (2) is provided with base (4), and the bottom of said base (4) is provided with base plate (5), and the bottom of said base plate (5) is provided with horizontal leg (6).
4. according to claim 1 or 2 said a kind of constant temperature ovens that are used for rotation viscometer, it is characterized in that: the quantity of said electrical bar (3) is four.
5. a kind of constant temperature oven that is used for rotation viscometer according to claim 1 is characterized in that: on the said controller LCDs is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210118743XA CN102636027A (en) | 2012-04-20 | 2012-04-20 | Constant temperature furnace for rotational viscometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210118743XA CN102636027A (en) | 2012-04-20 | 2012-04-20 | Constant temperature furnace for rotational viscometer |
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| Publication Number | Publication Date |
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| CN102636027A true CN102636027A (en) | 2012-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210118743XA Pending CN102636027A (en) | 2012-04-20 | 2012-04-20 | Constant temperature furnace for rotational viscometer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223107A (en) * | 2015-10-26 | 2016-01-06 | 中国石油集团西部钻探工程有限公司 | Normal heating flow graph |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4782445A (en) * | 1986-12-18 | 1988-11-01 | Food Automation-Service Techniques, Inc. | Control apparatus for cooking apparatus |
| JP2002303573A (en) * | 2001-04-05 | 2002-10-18 | Toyo Seiki Seisakusho:Kk | Rheometer for molten metal |
| CN101051017A (en) * | 2007-05-10 | 2007-10-10 | 太原科技大学 | Semi solid metal apparent viscosity detector |
| CN101281000A (en) * | 2007-04-04 | 2008-10-08 | 中国矿业大学 | High-temperature furnace capable of displaying and controlling constant-temperature area |
| CN201413028Y (en) * | 2009-05-20 | 2010-02-24 | 中国矿业大学 | Segmented temperature control muffle furnace |
| CN202547377U (en) * | 2012-04-20 | 2012-11-21 | 上海方瑞仪器有限公司 | Constant-temperature furnace for rotary viscosimeter |
-
2012
- 2012-04-20 CN CN201210118743XA patent/CN102636027A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4782445A (en) * | 1986-12-18 | 1988-11-01 | Food Automation-Service Techniques, Inc. | Control apparatus for cooking apparatus |
| JP2002303573A (en) * | 2001-04-05 | 2002-10-18 | Toyo Seiki Seisakusho:Kk | Rheometer for molten metal |
| CN101281000A (en) * | 2007-04-04 | 2008-10-08 | 中国矿业大学 | High-temperature furnace capable of displaying and controlling constant-temperature area |
| CN101051017A (en) * | 2007-05-10 | 2007-10-10 | 太原科技大学 | Semi solid metal apparent viscosity detector |
| CN201413028Y (en) * | 2009-05-20 | 2010-02-24 | 中国矿业大学 | Segmented temperature control muffle furnace |
| CN202547377U (en) * | 2012-04-20 | 2012-11-21 | 上海方瑞仪器有限公司 | Constant-temperature furnace for rotary viscosimeter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223107A (en) * | 2015-10-26 | 2016-01-06 | 中国石油集团西部钻探工程有限公司 | Normal heating flow graph |
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Application publication date: 20120815 |