CN215639857U - Temperature calibration device for constant temperature tank - Google Patents
Temperature calibration device for constant temperature tank Download PDFInfo
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- CN215639857U CN215639857U CN202121946126.XU CN202121946126U CN215639857U CN 215639857 U CN215639857 U CN 215639857U CN 202121946126 U CN202121946126 U CN 202121946126U CN 215639857 U CN215639857 U CN 215639857U
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- platinum resistance
- temperature
- top cover
- thermostatic bath
- rotating platform
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Abstract
The utility model discloses a temperature calibration device of a thermostatic bath, which comprises a top cover, a rotating platform arranged on the top cover in a penetrating way, a temperature detection mechanism arranged on the rotating platform and a rotation control mechanism used for controlling the rotation of the rotating platform, wherein the rotating platform and the top cover are coaxially arranged; the temperature detection mechanism comprises a central platinum resistance thermometer, a high-position platinum resistance thermometer, a low-position platinum resistance thermometer and a height fixing mechanism for fixing the platinum resistance thermometer. According to the utility model, the rotation control mechanism is arranged to drive the temperature detection mechanism to rotate, so that the temperature detection mechanism can move the position of the temperature detection mechanism to the next temperature measurement point without manual operation, one temperature measurement point on the upper horizontal plane, one temperature measurement point on the lower horizontal plane and the geometric center temperature of the working area of the thermostatic bath can be simultaneously measured at one time, the calibration efficiency is greatly improved, the temperature measurement points on the upper horizontal plane and the temperature measurement points on the lower horizontal plane are vertically corresponding one to one, and the calibration standard is met.
Description
Technical Field
The utility model belongs to the technical field of temperature calibration of a thermostatic bath, and particularly relates to a temperature calibration device of a thermostatic bath.
Background
The constant temperature bath has the function of enabling the temperature in the working area to be uniform by controlling the temperature of the liquid medium in the bath body, and is used for detecting thermometers such as thermometers and the like in the working area. At present, when a thermostatic bath is heated, the temperature in the bath is unevenly distributed, and a stirrer is used for mixing, but the stirring effect of the stirrer is not ideal.
Therefore, the thermostat needs to be calibrated for temperature uniformity in the operating area of the thermostat first before it is put into use. The working area of the thermostatic bath is a cylindrical working area. The specification of the temperature performance test of the thermostatic bath indicates that two standard platinum resistance thermometers, namely two platinum resistance thermometers, are required to be used for temperature measurement, wherein one platinum resistance thermometer is used as a fixed thermometer and is inserted into a working area by 1/2 depths, the other platinum resistance thermometer is used as a movable thermometer to sequentially measure typical position temperature measurement points which are uniformly distributed on the upper horizontal plane of the working area and the lower horizontal plane of the working area, and the typical position temperature measurement points generally comprise four temperature measurement points which are uniformly distributed along the edge of the upper horizontal plane of the working area and four temperature measurement points which are vertically corresponding to the four temperature measurement points on the lower horizontal plane of the working area. Because the position of the movable thermometer needs to be changed frequently, the conventional measurement process is that a user holds the platinum resistance thermometer by hands basically and moves according to the position of a temperature measuring point, but the method is time-consuming and labor-consuming, and the condition that the position of the platinum resistance thermometer is not accurately placed possibly occurs, so that the calibration result is not accurate. Therefore, there is a need for a device capable of automatically calibrating the temperature of a thermostatic bath to meet practical requirements.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the defects in the prior art are overcome, and the device for calibrating the temperature of the thermostatic bath is simple in structure, reasonable in design and strong in practicability.
In order to solve the technical problems, the utility model adopts the technical scheme that: the utility model provides a thermostatic bath temperature calibrating device, the thermostatic bath includes the cell body, its characterized in that: the temperature calibration device comprises a top cover which covers the top of the tank body, a rotating platform which is arranged on the top cover in a penetrating way and is in rotating fit with the top cover, a temperature detection mechanism arranged on the rotating platform, and a rotating control mechanism used for controlling the rotating platform to rotate, wherein the rotating platform and the top cover are coaxially arranged;
the temperature detection mechanism comprises a plurality of platinum resistance thermometers which penetrate through the rotating platform and extend into the tank body, and a height fixing mechanism for fixing the platinum resistance thermometers;
the platinum resistance thermometers comprise a central platinum resistance thermometer which is arranged at the central position of the rotating platform in a penetrating mode and used for measuring the geometric central temperature of the working area of the thermostatic bath, a high-level platinum resistance thermometer which is arranged beside the central platinum resistance thermometer and used for measuring the temperature of the temperature measuring point of the upper horizontal plane of the working area of the thermostatic bath, and a low-level platinum resistance thermometer used for measuring the temperature of the temperature measuring point of the lower horizontal plane of the working area of the thermostatic bath, the distance between the high-level platinum resistance thermometer and the central platinum resistance thermometer is equal to the distance between the low-level platinum resistance thermometer and the central platinum resistance thermometer, and the included angle formed by the central line of the high-level platinum resistance thermometer and the central line of the low-level platinum resistance thermometer and the plane formed by the central line of the central platinum resistance thermometer is 90 degrees or 180 degrees.
Foretell constant temperature bath temperature calibrating device which characterized in that: the height fixing mechanism comprises a hoop for clamping the platinum resistance temperature measurer and an outward-expanding limiting eave arranged at the bottom of the hoop, and the outward-expanding limiting eave is clamped at the top of the rotating platform.
Foretell constant temperature bath temperature calibrating device which characterized in that: the rotating platform comprises a driven fluted disc and a rotating limiting disc, wherein the driven fluted disc is arranged on the upper surface of the top cover, the rotating limiting disc is arranged at the bottom of the driven fluted disc and penetrates through the top cover, the driven fluted disc and the rotating limiting disc are coaxially arranged, the maximum outer diameter of the driven fluted disc is larger than the outer diameter of the rotating limiting disc, and the inner diameter of the top cover is matched with the outer diameter of the rotating limiting disc.
Foretell constant temperature bath temperature calibrating device which characterized in that: the rotation control mechanism comprises a driving gear meshed with the driven fluted disc, a motor used for controlling the rotation of the driving gear and a mounting seat used for fixing the motor.
Foretell constant temperature bath temperature calibrating device which characterized in that: the mounting seat is an L-shaped mounting seat, and the top of the L-shaped mounting seat is fixedly connected with the top cover.
Foretell constant temperature bath temperature calibrating device which characterized in that: the platinum resistance thermometer adopts a second-class standard platinum resistance thermometer.
Compared with the prior art, the utility model has the following advantages:
1. according to the utility model, the rotating platform is arranged on the top cover to install the temperature detection mechanism, so that the thermometer is manually clamped instead of a human, the calibration process is more time-saving and labor-saving, meanwhile, the temperature detection mechanism is installed by using a mechanical mechanism, the shaking which is inevitably caused when the thermometer is manually clamped can be avoided, and the calibration structure is more accurate.
2. The utility model can keep the stability of the platinum resistance thermometer in the whole calibration process at all times by arranging the height fixing mechanism, and in addition, the height of the platinum resistance thermometer can be adaptively adjusted according to different working areas of the tested constant temperature bath, so that the application range of the calibration device is enlarged, and the use effect is good.
3. According to the utility model, the rotation control mechanism is arranged to control the rotation of the rotating platform, so that the temperature detection mechanism is driven to rotate, the temperature detection mechanism can move the position of the temperature detection mechanism to the next temperature measurement point without manual operation, the control position is accurate, the one-to-one vertical correspondence between the temperature measurement points of the upper horizontal plane and the lower horizontal plane can be ensured, and the calibration standard is met.
4. The utility model can realize the simultaneous measurement of one temperature measuring point temperature on the upper horizontal plane, one temperature measuring point temperature on the lower horizontal plane and the geometric center temperature of the working area of the thermostatic bath at one time by arranging the central platinum resistance temperature measuring meter, the high-order platinum resistance temperature measuring meter and the low-order platinum resistance temperature measuring meter, and the high-order platinum resistance temperature measuring meter and the low-order platinum resistance temperature measuring meter are not influenced by each other when working, so that the temperature measuring time during calibration is reduced by half, the calibration efficiency is greatly improved, and the use effect is good.
In conclusion, the temperature measuring device is simple in structure, reasonable in design and high in practicability, the rotating platform is controlled to rotate by the rotation control mechanism, so that the temperature detecting mechanism is driven to rotate, the temperature detecting mechanism can move to the next temperature measuring point without manual operation, the temperature of one temperature measuring point on the upper horizontal plane of the working area of the thermostatic bath, the temperature of one temperature measuring point on the lower horizontal plane and the geometric center temperature of the working area can be measured at one time, the calibration efficiency is greatly improved, the control process is accurate, the temperature measuring points on the upper horizontal plane and the temperature measuring points on the lower horizontal plane can be guaranteed to be vertically corresponding one to one, and the temperature measuring device meets the calibration standard.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic structural view showing a plane formed by the central line of the high platinum resistance thermometer and the central line of the low platinum resistance thermometer, respectively, and the central line of the central platinum resistance thermometer, wherein the included angle is 180 degrees.
Fig. 2 is a top view of fig. 1.
FIG. 3 is a top view of the high platinum resistance thermometer and the low platinum resistance thermometer of the present invention, respectively, at an angle of 90 degrees with respect to a plane defined by the center line of the central platinum resistance thermometer.
Description of reference numerals:
1-a groove body; 2-a top cover; 3-a thermostatic bath working area;
4-central platinum resistance thermometer; 5-high platinum resistance thermometer; 6-low platinum resistance thermometer;
7-anchor ear; 8-outward expansion limiting eaves; 9-a driven fluted disc;
10-rotating the limiting disc; 11-a drive gear; 12-a motor;
13-mounting seat.
Detailed Description
As shown in fig. 1, 2 and 3, the utility model comprises a top cover 2 covering the top of a tank body 1, a rotating platform penetrating the top cover 2 and rotationally matched with the top cover 2, a temperature detection mechanism arranged on the rotating platform, and a rotation control mechanism for controlling the rotation of the rotating platform, wherein the rotating platform and the top cover 2 are coaxially arranged;
the temperature detection mechanism comprises a plurality of platinum resistance thermometers which penetrate through the rotating platform and extend into the tank body 1 and a height fixing mechanism for fixing the platinum resistance thermometers;
the platinum resistance thermometers comprise a central platinum resistance thermometer 4 which is arranged at the central position of the rotating platform in a penetrating mode and used for measuring the geometric central temperature of the working area 3 of the thermostatic bath, a high-order platinum resistance thermometer 5 which is arranged beside the central platinum resistance thermometer 4 and used for measuring the temperature of the temperature measuring point of the horizontal plane on the working area 3 of the thermostatic bath, and a low-order platinum resistance thermometer 6 which is used for measuring the temperature of the temperature measuring point of the horizontal plane under the working area 3 of the thermostatic bath, wherein the distance between the high-order platinum resistance thermometer 5 and the central platinum resistance thermometer 4 is equal to the distance between the low-order platinum resistance thermometer 6 and the central platinum resistance thermometer 4, and the included angle between the central line of the high-order platinum resistance thermometer 5 and the central line of the low-order platinum resistance thermometer 6 and the plane formed by the central platinum resistance thermometer 4 is 90 degrees or 180 degrees.
It should be noted that the top cover 2 is a top cover matched with the tank body 1, and is not a top cover of the thermostatic tank, and after the calibration operation is finished, the top cover 2 and the related connecting pieces thereof are removed, so that the original structure of the thermostatic tank can be recovered, and the subsequent use is not influenced.
It should be noted that, after the temperature measurement of the upper horizontal plane temperature measurement point and the lower horizontal plane temperature measurement point is completed, the rotation control mechanism controls the rotation platform to rotate 90 degrees, so that the high-order platinum resistance temperature measuring meter 5 and the low-order platinum resistance temperature measuring meter 6 both move to the next temperature measurement point for temperature measurement, the temperature measurement can be completed by controlling the rotation platform to rotate three times, the temperature measurement time during calibration is reduced by half, and the calibration efficiency is greatly improved.
After the temperature measurement is finished, the stability and uniformity of the temperature of the thermostatic bath are obtained by combining with JJF 1030-2010 thermostatic bath technical performance test specification; in addition, the temperature acquisition sequence during temperature measurement should also be executed according to JJF 1030 and 2010 constant temperature bath technical performance test specification.
It should be noted that, when the platinum resistance temperature measuring meter is actually installed, firstly, the thickness of the rotating platform is determined, secondly, the distance between the upper horizontal plane and the lower horizontal plane of the thermostatic bath and the bottom of the rotating platform is determined, and at the moment, how long the platinum resistance temperature measuring meter needs to be inserted can be known.
It should be noted that the rotating platform is arranged on the top cover 2 to install the temperature detection mechanism, so that the thermometer is manually clamped by a person, the calibration process is more time-saving and labor-saving, meanwhile, the temperature detection mechanism is installed by using a mechanical mechanism, the shaking which is inevitably caused when the thermometer is manually clamped can be avoided, and the calibration structure is more accurate;
the stability of the platinum resistance thermometer can be kept all the time in the whole calibration process by arranging the height fixing mechanism, and in addition, the height of the platinum resistance thermometer can be adaptively adjusted according to different working areas of the tested constant temperature bath, so that the application range of the calibration device is enlarged, and the use effect is good;
the rotating platform is controlled to rotate by the rotation control mechanism, so that the temperature detection mechanism is driven to rotate, the temperature detection mechanism can move to the next temperature measurement point without manual operation, the control position is accurate, the temperature measurement points of the upper horizontal plane and the lower horizontal plane can be ensured to be vertically corresponding one to one, and the calibration standard is met;
the device can simultaneously measure the temperature of one temperature measuring point on the upper horizontal plane of the working area 3 of the thermostatic bath, the temperature of one temperature measuring point on the lower horizontal plane and the geometric center temperature of the working area at one time by arranging the central platinum resistance temperature measuring meter 4, the high-position platinum resistance temperature measuring meter 5 and the low-position platinum resistance temperature measuring meter 6, and the high-position platinum resistance temperature measuring meter 5 and the low-position platinum resistance temperature measuring meter 6 do not influence each other during working, so that the temperature measuring time during calibration is reduced by half, the calibration efficiency is greatly improved, and the using effect is good.
In this embodiment, the height fixing mechanism comprises a hoop 7 for clamping the platinum resistance temperature measuring meter and an outward-extending limiting eave 8 arranged at the bottom of the hoop 7, and the outward-extending limiting eave 8 is clamped at the top of the rotating platform.
It should be noted that the hoop 7 is used for connecting the platinum resistance thermometer and the outward extending limiting eave 8, and meanwhile, the verticality and stability of the platinum resistance thermometer are guaranteed, the height fixing mechanism is installed after the installation height of the platinum resistance thermometer is determined, and the platinum resistance thermometer is fixed, so that the sensing part of the platinum resistance thermometer can accurately measure the point position to be measured.
In this embodiment, the rotation platform is including setting up the driven fluted disc 9 and the setting at the driven fluted disc 9 bottom of top cap 2 upper surface and running through the spacing dish 10 of rotation of top cap, and top cap 2, driven fluted disc 9 all are coaxial the laying with rotating spacing dish 10, and the biggest external diameter of driven fluted disc 9 is greater than the external diameter that rotates spacing dish 10, the internal diameter of top cap 2 and the external diameter phase-match that rotates spacing dish 10.
It should be noted that the bottom of the rotation limiting disc 10 is higher than the liquid level in the thermostatic bath, so as to avoid influencing the liquid circulation in the thermostatic bath, and the thickness of the driven fluted disc 9 is 3 cm-5 cm, so as to ensure the installation verticality and the installation stability of the platinum resistance temperature measurer.
In this embodiment, the rotation control mechanism includes a driving gear 11 engaged with the driven gear 9, a motor 12 for controlling rotation of the driving gear 11, and a mounting base 13 for fixing the motor 12.
It should be noted that, because the center of the driven gear disk 9 is provided with the central platinum resistance temperature measuring meter 4, the rotation control mechanism is skillfully arranged beside the driven gear disk 9, thereby avoiding influencing the installation of the platinum resistance temperature measuring meter.
It should be noted that the motor 12 is controlled by the computer, and when the computer finishes measuring the temperature of the upper horizontal plane temperature measuring point, the lower horizontal plane temperature measuring point and the geometric center of the thermostatic bath working area 3, the motor 12 is controlled to rotate 90 degrees to measure the temperature of the next temperature measuring point, and the data acquisition is rapid, accurate and convenient.
In this embodiment, the mounting seat 13 is an L-shaped mounting seat, and the top of the L-shaped mounting seat is fixedly connected to the top cover 2.
It should be noted that the side wall of the L-shaped mounting seat is arranged on the side wall of the tank body 1, so as to ensure the stability of the motor 12 during operation; in addition, the mounting base 13 is fixed with the top cover 2, so that the rotation control mechanism can be detached uniformly after the top cover 2 is separated from the tank body 1, and then the original top cover structure of the thermostatic tank is recovered, and subsequent use is not influenced.
In this embodiment, the platinum resistance thermometer is a second-class standard platinum resistance thermometer.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (6)
1. The utility model provides a thermostatic bath temperature calibrating device, the thermostatic bath includes cell body (1), its characterized in that: the temperature calibration device comprises a top cover (2) covered on the top of the tank body (1), a rotating platform which is arranged on the top cover (2) in a penetrating mode and is in rotating fit with the top cover (2), a temperature detection mechanism arranged on the rotating platform, and a rotating control mechanism used for controlling the rotating platform to rotate, wherein the rotating platform and the top cover (2) are coaxially arranged;
the temperature detection mechanism comprises a plurality of platinum resistance thermometers which penetrate through the rotating platform and extend into the tank body (1) and a height fixing mechanism for fixing the platinum resistance thermometers;
the platinum resistance thermometers comprise a central platinum resistance thermometer (4) which is arranged at the central position of the rotating platform in a penetrating way and is used for measuring the geometric central temperature of the working area (3) of the thermostatic bath, a high-order platinum resistance thermometer (5) which is arranged at the side of the central platinum resistance thermometer (4) and is used for measuring the temperature of the temperature measuring point of the upper horizontal plane of the working area (3) of the thermostatic bath, and a low-order platinum resistance thermometer (6) which is used for measuring the temperature of the temperature measuring point of the lower horizontal plane of the working area (3) of the thermostatic bath, the distance between the high-order platinum resistance temperature detector (5) and the central platinum resistance temperature detector (4) is equal to the distance between the low-order platinum resistance temperature detector (6) and the central platinum resistance temperature detector (4), the included angle between the central line of the high-position platinum resistance temperature detector (5) and the central line of the low-position platinum resistance temperature detector (6) and the plane formed by the central line of the central platinum resistance temperature detector (4) is 90 degrees or 180 degrees.
2. The thermostatic bath temperature calibration device according to claim 1, wherein: the height fixing mechanism comprises a hoop (7) used for clamping the platinum resistance temperature measuring meter and an outer expansion limiting eave (8) arranged at the bottom of the hoop (7), and the outer expansion limiting eave (8) is clamped at the top of the rotating platform.
3. The thermostatic bath temperature calibration device according to claim 1, wherein: the rotating platform comprises a driven fluted disc (9) arranged on the upper surface of the top cover (2) and a rotating limiting disc (10) arranged at the bottom of the driven fluted disc (9) and penetrating through the top cover, the top cover (2), the driven fluted disc (9) and the rotating limiting disc (10) are coaxially arranged, the maximum outer diameter of the driven fluted disc (9) is larger than the outer diameter of the rotating limiting disc (10), and the inner diameter of the top cover (2) is matched with the outer diameter of the rotating limiting disc (10).
4. The thermostatic bath temperature calibration device according to claim 1, wherein: the rotation control mechanism comprises a driving gear (11) meshed with the driven fluted disc (9), a motor (12) used for controlling the rotation of the driving gear (11), and a mounting seat (13) used for fixing the motor (12).
5. The thermostatic bath temperature calibration device according to claim 4, wherein: the mounting seat (13) is an L-shaped mounting seat, and the top of the L-shaped mounting seat is fixedly connected with the top cover (2).
6. The thermostatic bath temperature calibration device according to claim 1, wherein: the platinum resistance thermometer adopts a second-class standard platinum resistance thermometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121946126.XU CN215639857U (en) | 2021-08-18 | 2021-08-18 | Temperature calibration device for constant temperature tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121946126.XU CN215639857U (en) | 2021-08-18 | 2021-08-18 | Temperature calibration device for constant temperature tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215639857U true CN215639857U (en) | 2022-01-25 |
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ID=79899328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121946126.XU Active CN215639857U (en) | 2021-08-18 | 2021-08-18 | Temperature calibration device for constant temperature tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215639857U (en) |
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2021
- 2021-08-18 CN CN202121946126.XU patent/CN215639857U/en active Active
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