CN201885829U - Calibrating device for temperature sensor - Google Patents
Calibrating device for temperature sensor Download PDFInfo
- Publication number
- CN201885829U CN201885829U CN 201020644971 CN201020644971U CN201885829U CN 201885829 U CN201885829 U CN 201885829U CN 201020644971 CN201020644971 CN 201020644971 CN 201020644971 U CN201020644971 U CN 201020644971U CN 201885829 U CN201885829 U CN 201885829U
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- temperature sensor
- cavity
- calibrating installation
- fan
- installation according
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K15/00—Testing or calibrating of thermometers
- G01K15/005—Calibration
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- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model relates to a calibrating device for a temperature sensor, which comprises a cavity; the cavity is full of heat conduction mediums; a heating device and a temperature sensor are arranged in the cavity; the heat conduction medium is gas; a fan is also arranged in the cavity; a temperature sensor insertion hole to be calibrated is formed in the cavity; and a temperature sensor fixed device to be calibrated is arranged at the temperature sensor insertion hole to be calibrated. The calibrating device for the temperature sensor has the characteristics of quick temperature rise and uniform internal temperature field.
Description
Technical field
The utility model relates to temperature sensor calibrating installation technical field, especially a kind of dry type temperature sensor calibrating installation.
Background technology
Temperature sensor is widely used at industry-by-industry, and along with reasons such as wearing out of components and parts and equipment, the precision of temperature sensor can reduce.The generation of this phenomenon can influence the quality of production of the industry of serviceability temperature sensor.This just needs by the precision periodic calibration of temperature sensor calibrating installation to temperature sensor.Advantages such as the temperature sensor calibrating installation comprises dry-calibrating device and oil immersed type calibrating installation, and the dry-calibrating device is little owing to volume, be easy to carry are widely used at the scene temperature sensor being calibrated.But present dry type temperature sensor calibrating installation mainly comprises the metallic cavity of big quality and places the interior soaking piece of cavity, owing to will cause programming rate slow to the heating of soaking piece.And the metallic cavity of quality causes thermal capacity bigger greatly, and it is also slow to lower the temperature, and can reduce user's calibration efficiency.In addition, be calibrated temperature sensor, need cause the big and high shortcoming of processing cost of difficulty of processing in the hole of boring on the soaking piece more than the 200mm degree of depth in order to lay.All there is a fan outside of the metallic cavity of present temperature sensor calibrating installation in continuous blowing, guarantees that the outer temperature of cavity field is stable, even, and this can cause energy loss, and the user that in use might burn.
This shows that above-mentioned existing temperature sensor calibrating installation obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.In order to solve the problem that the temperature sensor calibrating installation exists, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.
Because the defective that above-mentioned existing temperature sensor calibrating installation exists, the design people is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding a kind of temperature sensor calibrating installation of new structure, can improve general existing temperature sensor calibrating installation, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, create the utility model that has practical value finally.
The utility model content
In order to solve the above-mentioned problems in the prior art, the utility model provides a kind of temperature sensor calibrating installation, has quick heating, an inner temperature uniform characteristic.
In order to solve the problems of the technologies described above, the utility model has adopted following technical scheme:
The temperature sensor calibrating installation, comprise cavity, be full of heat-conduction medium in the cavity, be provided with heating arrangement and temperature sensor in the cavity, described heat-conduction medium is a gas, also be provided with fan in the cavity, cavity is provided with temperature sensor patchhole to be calibrated, and temperature sensor patchhole to be calibrated place is provided with temperature sensor clamping device to be calibrated.
Further, temperature sensor calibrating installation of the present utility model can increase its practicality by following technical solution.Wherein, described fan is located at the middle part in the cavity, and described heating arrangement is around the fan setting.
Further, temperature sensor calibrating installation of the present utility model can increase its practicality by following technical solution.Wherein, also be provided with air intake opening and gas outlet on the described cavity, air intake opening is provided with inlet valve, and the gas outlet is provided with air outlet valve, and the position of air intake opening is than the close fan in the position of gas outlet.
Further, temperature sensor calibrating installation of the present utility model can increase its practicality by following technical solution.Wherein, the bottom of cavity all is located in air intake opening and gas outlet, and inlet valve and air outlet valve are fixed on the drive link, and drive link links to each other with stepper motor.
Further, temperature sensor calibrating installation of the present utility model can increase its practicality by following technical solution.Wherein, the ventiduct in described gas outlet and the cavity is connected the top that is positioned at cavity suitable for reading of described ventiduct.
Further, temperature sensor calibrating installation of the present utility model can increase its practicality by following technical solution.Wherein, described fan is a centrifugal fan, and described centrifugal fan comprises rotating shaft and be arranged at centrifuge blade in the rotating shaft, and rotating shaft vertically is provided with, and rotating shaft is connected with drive of motor.
Further, temperature sensor calibrating installation of the present utility model can increase its practicality by following technical solution.Wherein, described cavity comprises the high-temperature-resistant thermal-insulation layer between internal layer, skin and internal layer and the skin, and described internal layer and skin are the mirror face stainless steel plate, and described high-temperature-resistant thermal-insulation layer is the cotton layer of ceramic fiber.
Further, temperature sensor calibrating installation of the present utility model can increase its practicality by following technical solution.Wherein, described cavity comprises base plate, sidewall and top cover, and temperature sensor patchhole to be calibrated is located on the top cover.
Further, temperature sensor calibrating installation of the present utility model can increase its practicality by following technical solution.Wherein, described heating arrangement is a heating wire, and described heating wire is arranged on the electrothermal wire rack.
Further, temperature sensor calibrating installation of the present utility model can increase its practicality by following technical solution.Wherein, the space in the described cavity is cylindrical.
Compared with prior art, the beneficial effects of the utility model are:
1, temperature sensor calibrating installation of the present utility model has reduced the loss of energy by adopting closed heat insultating cavity.
2, adopt air directly to treat the heating of base measuring temperature sensor as heat-conduction medium, and do not adopt soaking piece of the prior art that object is heated, and significantly reduced weight, reduce thermal capacitance, help improving and heat up and cooling rate, and reduced processing cost.
3, adopt dc fan motor to drive wheeled centrifugal fan blade high-speed rotation, make gas, thereby guarantee the homogeneity of inside cavity temperature field in the inside cavity flow at high speed.
4, can reduce fast for the temperature in the cavity that makes temperature sensor calibrating installation of the present utility model, on cavity, be provided with air intake opening and gas outlet, air intake opening is near the depression of fan, the gas outlet communicates with cavity inner top high-pressure area, when air intake opening, gas outlet conducting, the cold air of outside can be released from the gas outlet from the air intake opening suction, thereby realizes fast cooling.
Description of drawings
Fig. 1 is the top structure synoptic diagram of the preferred embodiment of temperature sensor calibrating installation of the present utility model;
Fig. 2 is the A-A schematic cross-section of Fig. 1;
Fig. 3 is the perspective view of cavity of the preferred embodiment of temperature sensor calibrating installation of the present utility model.
Number in the figure is: 1, direct current generator; 2, rotating shaft; 3, centrifuge blade; 4, sidewall; 5, cavity; 6, temperature sensor; 7, heating wire; 8, heat insulating mattress; 9, electrothermal wire rack; 10, temperature sensor patchhole to be calibrated; 11, geometrical clamp; 12, temperature sensor connection terminal; 13, heating wire connection terminal; 14, top cover; 15, base plate; 16, inlet valve; 17, air intake opening; 18., air outlet valve; 19, gas outlet; 20, stepper motor; 21, gas outlet baffle plate; 22, ventiduct; 23, drive link.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail, but not as to qualification of the present utility model.
As shown in Figure 1 to Figure 3, Fig. 3 is the perspective view of cavity of the preferred embodiment of temperature sensor calibrating installation of the present utility model.The temperature sensor calibrating installation comprises cavity 5, and cavity comprises base plate 15, sidewall 4 and top cover 14, is provided with heat insulating mattress 8 between top cover 14 and the sidewall 4.The inner space of the profile of cavity 5 and cavity 5 can be cylindrical a, cuboid, polygon prismatic or be multiple shapes such as sphere, elliposoidal.The inner space of the profile of cavity 5 and cavity 5 can be different shapes, and the inner space shape of cavity 5 is preferably cylindrical.Fig. 2 is that the vertical section structure of the preferred embodiment of temperature sensor calibrating installation of the present utility model cuts open figure.Be provided with heating arrangement, temperature sensor 6 and fan in the cavity 5, be full of air in the cavity 5 as heat-conduction medium, cavity 5 is provided with temperature sensor patchhole 10 to be calibrated, and temperature sensor patchhole to be calibrated 10 places are provided with temperature sensor clamping device to be calibrated.Temperature sensor 6 is drawn from base plate by temperature sensor connection terminal 12.Fan is a centrifugal fan, and centrifugal fan comprises rotating shaft 2 and the centrifuge blade 3 that is arranged in the rotating shaft 2, and rotating shaft 2 vertically is provided with, and rotating shaft 2 is passed base plate 15 and is in transmission connection with direct current generator 1.Direct current generator 1 drives rotating shaft 2 and rotates, thereby makes the centrifuge blade rotation.Fan is located at the centre of cavity 5 inside.Heating arrangement is a heating wire 7, and heating wire 7 is arranged on the electrothermal wire rack 9, heating wire 7 by heating wire connection terminal 13 outside base plate 15 is drawn cavity 5.Heating wire 7 is around the fan setting.Temperature sensor patchhole 10 to be calibrated is located on the top cover 14.The number of temperature sensor patchhole 10 to be calibrated is six, the diameter difference of six temperature sensor patchholes 10 to be calibrated, and diameter range is 6mm-20mm.Six temperature sensor patchholes 10 to be calibrated distribute on top cover 14 ringwise.The temperature sensor clamping device that temperature sensor patchhole 10 places are provided with is a geometrical clamp 11.
As shown in Figure 2, the base plate 15 of cavity 5 is provided with air intake opening 17 and gas outlet 19, the position that air intake opening 17 is arranged near the rotating shaft 2 of fan (is the center, the low-pressure area that produces during fan rotation just), gas outlet 19 is arranged on the position away from the rotating shaft 2 of fan, be the higher-pressure region that gas outlet 19 produces when being communicated with the fans rotation, the position that is to say gas outlet 19 than the position of air intake opening 17 further from the center.Ventiduct 22 in gas outlet 19 and the cavity 5 is communicated with the top that is positioned at cavity 5 suitable for reading of ventiduct.Ventiduct 22 is made of the sidewall 4 of gas outlet baffle plate 21 with cavity 5.The air intake opening 17 outer inlet valves 16 that are provided with are provided with air outlet valve 18 outside the gas outlet 19, and inlet valve 16 and air outlet valve 18 are arranged on the drive link 23, and drive link 23 links to each other with stepper motor 20.The aperture of inlet valve 16, air outlet valve 18 is subjected to stepper motor 20 controls.
As shown in Figure 2, the base plate 15 of cavity 5, sidewall 4 and top cover 14 include internal layer, skin and be arranged at internal layer and skin between the high-temperature-resistant thermal-insulation layer, wherein internal layer and skin are the mirror face stainless steel plate of 1 millimeters thick, and the high-temperature-resistant thermal-insulation layer is the cotton layer of the ceramic fiber of 30 millimeters thick.
The rotating shaft 2 of fan overlaps with the inside vertical central axis of cavity 5.Heating wire 7 is provided with around centrifuge blade 3.Temperature sensor 6 is the PT100 platinum resistance, is arranged on the outside of heater strip 7, and near heater strip 7, in order to measure stove box body temperature inside.Temperature sensor patchhole 10 to be calibrated is that the center distributes ringwise with the inside vertical central axis of cavity 5.
The diameter of the cylindrical space in the cavity 5 is influenced by the diameter of intraware centrifuge blade 3, heating arrangement and temperature sensor patchhole 10 to be calibrated, generally wants the 100-200 millimeter, and present embodiment is 140 millimeters.The height in space is subjected to the influence of temperature sensor length to be calibrated in the cavity 5, generally wants the 240-300 millimeter, and present embodiment is 260 millimeters.The diameter of centrifuge blade 3 is 60 millimeters, highly is 200 millimeters.Heating wire 7 is provided with around centrifuge blade 3, and heating wire 7 surrounds 80 millimeters of the diameters of annulus, 200 millimeters of height, and power is 200 watts at full capacity.The diameter range of temperature sensor patchhole 10 to be calibrated is 6mm-20mm.The diameter of air intake opening 17, gas outlet 19 is 20 millimeters.The output power of direct current generator 1 is adjustable, 15 watts at full capacity.
Temperature sensor calibrating installation of the present utility model during 3 rotations of direct current generator 1 band centrifuge blade, can form depression near the rotating shaft 2 of fan, form the high-pressure area at centrifuge blade 3 radially outer edges.When heating, will make and form circulating current in the stove box body 5, this air-flow makes stove box body 5 interior temperature fields even, and the hot-air that heated material is circulated evenly heats.Because the volume heat absorption capacity coefficient little, air of cavity 5 is little, can realize the programming rate greater than 100 ℃/minute, upper temperature limit can reach 600 ℃.When cooling, air intake opening 17 is near the rotating shaft 2 of fan, just near depression, gas outlet 19 communicates by the top area in ventiduct 22 and the cavity 5, this zone is in the high-pressure area, and when stepper motor 20 control inlet valves 16, when air outlet valve 18 is opened, the cold air of cavity 5 outsides is from air intake opening 17 suction, 19 release from the gas outlet, thereby realize fast cooling.The purpose that gas outlet 19 is extended to the top area in the cavity 5 by ventiduct 22 is can the flow through top area of stove box body 5 of the cold air that allows the bottom flow into, with to the top area cooling, needs 2 minutes from 350 ℃ to the temperature higher 5 ℃ than environment temperature.
Other required indispensable parts of temperature sensor heater calibration of the present utility model adopt prior art to get final product, and do not repeat them here.
Temperature sensor heater calibration of the present utility model is under the control of the SC6000 of Chongqing Sichuan Instrument Analyzer Co., Ltd gas chromatograph temperature controller, accuracy of temperature control reaches ± and 0.02 ℃/15 minutes, the temperature control scope can reach environment temperature+4～600 ℃, level temperature field uniformity ± 0.05 ℃, vertical temperature field uniformity ± 0.2 ℃, insertion depth 200mm, programming rate is greater than 100 ℃/minute, during cooling, need 2 minutes from 350 ℃ to the temperature higher 5 ℃ than environment temperature.Can realize 9 rank Programmable Temperature calibrations, repeatability is better than 0.5%.The diameter that can insert temperature sensor to be calibrated is from 6mm-20mm.Be better than the present index of advanced temperature correction instrument, but its weight is saved electric power 70% less than 50% of existing temperature correction instrument.Above index also is expected to significantly improve through further optimization.The utility model can reduce the weight and the power consumption of temperature correction instrument, has remarkable economical and social benefit.
Above embodiment is an exemplary embodiment of the present utility model only, is not used in restriction the utility model, and protection domain of the present utility model is defined by the claims.Those skilled in the art can make various modifications or be equal to replacement the utility model in essence of the present utility model and protection domain, this modification or be equal to replacement and also should be considered as dropping in the protection domain of the present utility model.
Claims (10)
1. temperature sensor calibrating installation, comprise cavity, be full of heat-conduction medium in the cavity, be provided with heating arrangement and temperature sensor in the cavity, it is characterized in that described heat-conduction medium is a gas, also be provided with fan in the cavity, cavity is provided with temperature sensor patchhole to be calibrated, and temperature sensor patchhole to be calibrated place is provided with temperature sensor clamping device to be calibrated.
2. temperature sensor calibrating installation according to claim 1 is characterized in that, described fan is located at the middle part in the cavity, and described heating arrangement is around the fan setting.
3. temperature sensor calibrating installation according to claim 1 is characterized in that, also is provided with air intake opening and gas outlet on the described cavity, and air intake opening is provided with inlet valve, and the gas outlet is provided with air outlet valve, and the position of air intake opening is than the close fan in the position of gas outlet.
4. temperature sensor calibrating installation according to claim 3 is characterized in that the bottom of cavity all is located in air intake opening and gas outlet, and inlet valve and air outlet valve are fixed on the drive link, and dwang links to each other with stepper motor.
5. temperature sensor calibrating installation according to claim 3 is characterized in that, the ventiduct in described gas outlet and the cavity is connected the top that is positioned at cavity suitable for reading of described ventiduct.
6. temperature sensor calibrating installation according to claim 1 is characterized in that, described fan is a centrifugal fan, and described centrifugal fan comprises rotating shaft and be arranged at centrifuge blade in the rotating shaft, and rotating shaft vertically is provided with, and rotating shaft is connected with drive of motor.
7. temperature sensor calibrating installation according to claim 1, it is characterized in that, described cavity comprises the high-temperature-resistant thermal-insulation layer between internal layer, skin and internal layer and the skin, and described internal layer and skin are the mirror face stainless steel plate, and described high-temperature-resistant thermal-insulation layer is the cotton layer of ceramic fiber.
8. temperature sensor calibrating installation according to claim 1 is characterized in that described cavity comprises base plate, sidewall and top cover, and temperature sensor patchhole to be calibrated is located on the top cover.
9. temperature sensor calibrating installation according to claim 1 is characterized in that, described heating arrangement is a heating wire, and described heating wire is arranged on the electrothermal wire rack.
10. temperature sensor calibrating installation according to claim 1 is characterized in that, the space in the described cavity is cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020644971 CN201885829U (en) | 2010-12-07 | 2010-12-07 | Calibrating device for temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020644971 CN201885829U (en) | 2010-12-07 | 2010-12-07 | Calibrating device for temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201885829U true CN201885829U (en) | 2011-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020644971 Expired - Fee Related CN201885829U (en) | 2010-12-07 | 2010-12-07 | Calibrating device for temperature sensor |
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| Country | Link |
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| CN (1) | CN201885829U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095528A (en) * | 2010-12-07 | 2011-06-15 | 西华大学 | Temperature sensor calibration device |
| CN102778308A (en) * | 2012-07-10 | 2012-11-14 | 北京航空航天大学 | Traceable dynamic gas temperature signal generation device |
| NL2011283C2 (en) * | 2013-08-08 | 2015-02-10 | Tradinco Instr App N B V | Temperature calibration arrangement and calibration oven comprising such an arrangement. |
| FR3039644A1 (en) * | 2015-07-29 | 2017-02-03 | Waranet Solutions | DEVICE AND METHOD FOR CALIBRATING A SENSOR, IN PARTICULAR A CLIMATIC SENSOR |
| CN107758007A (en) * | 2016-08-21 | 2018-03-06 | 兰州城市学院 | A kind of packing machine surveys bagging apparatus |
| CN108827497A (en) * | 2018-03-13 | 2018-11-16 | 安徽瑞鑫自动化仪表有限公司 | A kind of temperature detecting precision method of inspection of temperature sensor |
-
2010
- 2010-12-07 CN CN 201020644971 patent/CN201885829U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095528A (en) * | 2010-12-07 | 2011-06-15 | 西华大学 | Temperature sensor calibration device |
| CN102095528B (en) * | 2010-12-07 | 2012-03-07 | 西华大学 | Temperature sensor calibration device |
| CN102778308A (en) * | 2012-07-10 | 2012-11-14 | 北京航空航天大学 | Traceable dynamic gas temperature signal generation device |
| CN102778308B (en) * | 2012-07-10 | 2014-01-01 | 北京航空航天大学 | Traceable dynamic gas temperature signal generation device |
| NL2011283C2 (en) * | 2013-08-08 | 2015-02-10 | Tradinco Instr App N B V | Temperature calibration arrangement and calibration oven comprising such an arrangement. |
| EP2835623A1 (en) * | 2013-08-08 | 2015-02-11 | Tradinco Instrumenten-Apparaten B.V. | Temperature calibration arrangement and calibration oven comprising such an arrangement |
| FR3039644A1 (en) * | 2015-07-29 | 2017-02-03 | Waranet Solutions | DEVICE AND METHOD FOR CALIBRATING A SENSOR, IN PARTICULAR A CLIMATIC SENSOR |
| CN107758007A (en) * | 2016-08-21 | 2018-03-06 | 兰州城市学院 | A kind of packing machine surveys bagging apparatus |
| CN108827497A (en) * | 2018-03-13 | 2018-11-16 | 安徽瑞鑫自动化仪表有限公司 | A kind of temperature detecting precision method of inspection of temperature sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20131207 |