CN202403839U - Calorimeter temperature sensor pair verification thermostatic bath - Google Patents
Calorimeter temperature sensor pair verification thermostatic bath Download PDFInfo
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- CN202403839U CN202403839U CN2012200031542U CN201220003154U CN202403839U CN 202403839 U CN202403839 U CN 202403839U CN 2012200031542 U CN2012200031542 U CN 2012200031542U CN 201220003154 U CN201220003154 U CN 201220003154U CN 202403839 U CN202403839 U CN 202403839U
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Abstract
The utility model relates to a calorimeter temperature sensor pair verification thermostatic bath. The thermostatic bath comprises a first bath body, a second bath body and a control system used for respectively controlling the first bath body and the second bath body. The thermostatic bath is characterized in that liquid in a mixing cavity of the first bath body enters a first working cavity from a bottom channel, and the liquid in the first working cavity has stable temperature; and liquid in a mixing cavity of the second bath body enters a second working cavity from a bottom channel, and the liquid in the second working cavity has stable temperature. A temperature sensor pair of a calorimeter can be accurately verified by the thermostatic bath, therefore, the measurement accuracy of the calorimeter is improved, and the thermostatic bath is beneficial to improving the utilization rate of energy and preventing energy waste.
Description
Technical field
The utility model relates to a kind of calibration cell, especially relates to a kind of calibration cell that the pairing temperature sensor of calorimeter is examined and determine.
Background technology
At present, northern China will heat winter, for energy savings, reduces flue dust, and most of areas are through the heat supply network central heating, and the newly-built building of national regulation beginning on October 1st, 1 must relate to, install and use hot metering facility.For control that can be scientific and reasonable with use the heat supply energy, prevent energy dissipation, need calibrate the accuracy of the heat that guarantees to measure to the accuracy of the calorimeter of a large amount of uses through calorimeter.Calorimeter mainly is made up of flow sensor, pairing temperature sensor and counter; The principle of work of calorimeter is: pairing temperature sensor is installed in respectively on the entrance and exit pipeline of heat exchange loop, flow sensor is installed on inlet or the outlet conduit; Flow sensor sends flow signal, and pairing temperature sensor provides the temperature signal of entrance and exit, and counter is gathered flow signal and temperature signal, through calculating, demonstrates the heat that thermal liquid is discharged to outlet from inlet.The calibrating installation of calorimeter is to produce according to the related request design of JJG225-2001 national metrological verification regulations heat energy table and CJ128-2000 city-building industry standard calorimeter; Its principle is that proving flowmeter and tested calorimeter are connected in the pipeline; Two calibration cells are simulated the out temperature in the pipe line, two temperature sensors of two standard thermometers that install and tested calorimeter are placed the calibration cell of two design temperatures respectively.Obtain the normal stream value through proving flowmeter; Two standard thermometers obtain the numerical value of the temperature and the temperature difference; Calculate the standard calorie value in the calibrating time according to associated hot mechanics formula; The actual calorie value that records of this numerical value and calorimeter compared can draw the accuracy of tested calorimeter, accomplishes calibrating.
In calibrating installation, owing to need to use calibration cell simulation out temperature, visible so that two temperature sensors are examined and determine, the accuracy of the temperature of calibration cell simulation becomes the key factor that influences the calibrating of pairing temperature sensor accuracy.In traditional calibration cell, adopt heater block to liquid heat, be positioned near the fluid temperature of heater block and raise; Produce convection current with liquid on every side, make the liquid in the groove be tending towards steady temperature gradually, yet; Find in actual use; Because the inequality of heating cause the liquid of vertical direction in the groove to have convection current, and the temperature distributing disproportionation in the groove is even.Therefore, a temperature equally distributed calibration cell has very exigence in high temperature control precision, the groove to having.
Summary of the invention
The purpose of the utility model provide a kind of temperature field distribution evenly, calibrating calibration cell that can the accurate calorimeter pairing temperature sensor of temperature control.
The utility model provides a kind of calorimeter pairing temperature sensor calibrating calibration cell; Comprise: first cell body and second cell body; And the control system that first cell body and second cell body are controlled respectively; It is characterized in that: the liquid in the mixing chamber of said first cell body gets into first working cavity through foot passage, and liquid has stable temperature in first working cavity; Liquid in the mixing chamber of said second cell body gets into second working cavity through foot passage, and liquid has stable temperature in second working cavity.
Wherein, first cell body further comprises the stirring system that cooperates with mixing chamber, the heating component that the liquid of mixing chamber near zone is heated.
Wherein, second cell body further comprises the stirring system that cooperates with mixing chamber, the heating component that the liquid of mixing chamber near zone is heated, and the cooling assembly that the liquid of mixing chamber near zone is freezed.
Wherein, in said mixing chamber, be provided with the control temperature meter, this control temperature meter is measured the temperature in the mixing chamber.
Wherein, above first working cavity and second working cavity, have upper end cover respectively, said pairing temperature sensor is inserted in first and second working cavities through upper end cover.
Wherein, the sidewall of first working cavity and second working cavity is spreader plate, and the liquid that flows through foot passage gets into said first cavity and said second working cavity through said spreader plate respectively.
The calibration cell of the utility model provides two uniform perform regions of temperature, can satisfy the calibrating demand of the calorimeter pairing temperature sensor temperature difference.Calibration cell can accurately be examined and determine the pairing temperature sensor of calorimeter, has improved the measurement accuracy of calorimeter, helps improving efficiency of energy utilization, prevents energy dissipation.
Description of drawings
Accompanying drawing is just for the ease of it will be apparent to those skilled in the art that and implement the utility model, and what it provided is the synoptic diagram of structure, and size and dimension in the accompanying drawing and position concern that conduct is not to the restriction of the apparatus structure of reality.
Fig. 1 calorimeter pairing temperature sensor calibrating calibration cell synoptic diagram;
The side structure synoptic diagram of Fig. 2 first cell body;
The side structure synoptic diagram of Fig. 3 second cell body.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described, it will be appreciated by those skilled in the art that following example only is for the ease of understanding and implements the utility model, and should be with on the concrete structure of limiting to the scope of utility model.
Temperature sensor as shown in Figure 1 calibrating calibration cell device, it comprises first cell body 1 and second cell body 2 with different temperatures, and the control panel 3 that each item function of calibration cell is controlled and operated.The temperature range of first cell body 1 is: room temperature～90 ℃; Second cell body, 2 temperature ranges are: 5 ℃～90 ℃; Can control the temperature of first cell body 1 and second cell body 2 through control panel 3, it specifically comprises regulates part on a large scale to temperature, and fine adjustment part among a small circle.Said first cell body 1 and second cell body 2 are according to the calibrating requirement, and the setting through control panel has steady temperature respectively, and pairing temperature sensor is inserted into respectively in first and second cell bodies, carries out temperature detection.The temperature range of above-mentioned two cell bodies of temperature sensor calibrating calibration cell device can satisfy the temperature calibrating and the temperature difference calibrating demand of calorimeter pairing temperature sensor.
As shown in Figure 2, be the sectional view of the side-looking direction of first cell body 1 among Fig. 1.This first cell body 1 comprises mixing chamber 4, and at the arranged outside heating component 5 of mixing chamber 4, the temperature that is provided with in 6 pairs of mixing chambers of control temperature meter 4 is measured; Stirring system 7; This stirring system 7 and mixing chamber 4 cooperatings; The upper end of stirring system 7 is a motor, and the lower end of stirring system 7 is a blade, through motor rotating drive blade; To stirring, improve the temperature homogeneity of liquid in the mixing chamber through the liquid in the mixing chamber of heating component 5 heating; Working cavity 8 has the upper end cover 9 that is mated in working cavity 8, in this working cavity 8, have isothermal liquid, and a pairing temperature sensor to be measured is inserted in the working cavity 8 through upper end cover 9 to be examined and determine; Control system 10; This control system 10 can be controlled the work of parts such as heating component 5, control temperature meter 6, stirring system 7, this control system 10 also can comprise the temperature element (not shown) that the temperature of the isothermal liquid in the working cavity 8 is monitored; Control system to control accuracy of temperature at 0.001 ℃; This control system 10 has the action button that the parameters of first cell body 1 is controlled on control panel 3, require parameter is set according to concrete control.
Said first cell body 1 adopts laminar-flow technique, and liquid medium has overcome in traditional calibration cell in the cell body, because the warm field distribution of liquid is inhomogeneous, liquid carries out the problem of convection current and heat interchange in vertical direction.As shown in Figure 2, in first cell body 1, heat through control system 10 control heating components 5; Because heating component 5 is arranged in the liquid regions outside the mixing chamber 4, the process liquid heated enters into mixing chamber 4 from the top of mixing chamber, and control stirring system 7 carries out work; Liquid fully mixes in mixing chamber under stirring system 7 effects, can measure the temperature of the liquid in the mixing chamber through control temperature meter 6, further the heating of heating component 5 is controlled according to the temperature that records; Through the dynamic heat of heating component 5, that is, and when temperature is too high; Heating component reduces power, and when temperature reduced, power in time raise; Make the liquid medium temperature in first cell body 1 keep constant, simultaneously under the promotion of stirring system 7, flow through the liquid with uniform temperature of mix foot passage in the mixing chamber through cell body; The liquid with uniform temperature that flows gets in the working cavity 8 through spreader plate 11, and preferred said spreader plate can be the sidewall of working cavity, wherein; Have equally distributed a plurality of opening on this spreader plate, this opening is preferably through hole, and liquid can be by getting into working cavity through those openings; The height of preferred this spreader plate 11 is corresponding with the perform region of working cavity, and under the continuous action of stirring system 7, the liquid with uniform temperature moves horizontally in working cavity 8; The open amount of the bottom of preferred this spreader plate is less than the open amount on top, thereby the speed of passing through at the regional liquid of whole spreader plate is identical; Avoided traditional calibration cell vertical direction convection heat transfer and with the problem of the convection heat transfer of external environment, make liquid in the working cavity 8 in whole perform region uniformity of temperature profile, the liquid in the working cavity returns liquid mixing zone, mixing chamber 4 place through upper end cover 9 with the mode of overflow; Thereby in whole first cell body 1; Liquid forms stable working cycle, has guaranteed a temperature evenly distribution of the liquid in the perform region, has improved the accuracy of detection to pairing temperature sensor.
As shown in Figure 3, be the sectional view of the side-looking direction of second cell body 2 among Fig. 1.This second cell body 2 has the structure similar with first cell body 1, and it comprises mixing chamber 12, and at the arranged outside heating component 13 and the cooling assembly 14 of mixing chamber 12, the temperature that are provided with in 15 pairs of mixing chambers of control temperature meter 12 are measured; Stirring system 16; This stirring system 16 and mixing chamber 12 cooperatings; The upper end of stirring system 16 is a motor, and the lower end of stirring system 16 is a blade, through motor rotating drive blade; Liquid to cooling off through liquid in the mixing chamber of heating component 13 heating and cooling assembly 14 stirs, and improves the temperature homogeneity of liquid in the mixing chamber; Working cavity 17 has the upper end cover 18 that is mated in working cavity 17, in this working cavity 17, have isothermal liquid, and a pairing temperature sensor to be measured is inserted in the working cavity 17 through upper end cover 18 to be examined and determine; Control system 19; This control system 19 can be controlled the work of parts such as heating component 13, cooling assembly 14, control temperature meter 15, stirring system 16, this control system 19 also can comprise the temperature element (not shown) that the temperature of the isothermal liquid in the working cavity 17 is monitored; This control system 19 has the action button that the parameters of second cell body 2 is controlled on control panel 3, require parameter is set according to concrete control.Interchangeable, this cooling assembly and heating component preferably can be arranged on the inner liquid regions of mixing chamber, and preferably this cooling assembly 14 is a refrigeration coil.
As shown in Figure 3, said second cell body 2 adopts laminar-flow technique, and liquid medium has overcome in traditional calibration cell in the cell body, because the warm field distribution of liquid is inhomogeneous, liquid carries out the problem of convection current and heat interchange in vertical direction.In second cell body 2, heat or control cooling assembly 14 through control system 19 control heating components 13 and freeze, because heating component 13 is arranged in mixing chamber 12 liquid regions outward with cooling assembly; The process liquid heated enters into mixing chamber 12 from the top of mixing chamber, and control stirring system 16 carries out work, and liquid fully mixes in mixing chamber under stirring system 16 effects; Can measure the temperature of the liquid in the mixing chamber through control temperature meter 15, further the heating of heating component 5 and the refrigeration of cooling assembly 14 controlled according to the temperature that records, this cooling assembly 14 is connected with refrigeration system 21; Concrete annexation is not shown in Fig. 3, and through the dynamic heat of heating component 5 and the dynamic refrigeration of cooling assembly 14, preferably heating power is constant; Refrigeration work consumption is adjusted, and more preferably refrigeration work consumption is constant, and heating power is adjusted; Make the liquid medium temperature in first cell body 1 keep constant, simultaneously under the promotion of stirring system 16, flow through the liquid with uniform temperature of mix foot passage in the mixing chamber through cell body; The liquid with uniform temperature that flows gets in the working cavity 17 through spreader plate 20; Wherein, have equally distributed a plurality of opening on this spreader plate 20, this opening is preferably through hole; Liquid can be by getting into working cavity through those openings; The height of preferred this spreader plate 11 is corresponding with the perform region of working cavity, and under the continuous action of stirring system 16, the liquid with uniform temperature moves horizontally in working cavity 17; The open amount of the bottom of preferred this spreader plate is less than the open amount on top; Thereby the speed of passing through at the regional liquid of whole spreader plate is identical, avoided traditional calibration cell vertical direction convection heat transfer and with the problem of the convection heat transfer of external environment; Make liquid in the working cavity 17 in whole perform region uniformity of temperature profile; Liquid in the working cavity is through returning liquid mixing zone, mixing chamber 12 place through upper end cover 18 with the mode of overflow, thereby in whole second cell body 2, liquid forms stable working cycle; Guaranteed a temperature evenly distribution of the liquid in the perform region, improved accuracy of detection pairing temperature sensor.
Adopt first cell body and second cell body of said structure, trough body structure and cap material in preferred first cell body and second cell body are stainless steel material.The temperature range of first cell body is: room temperature～90 ℃; The second cell body temperature range is: 5 ℃～90 ℃; Two interior temperature fluctuations of cell body are ± 0.005 ℃; Temperature field uniformity≤0.01 ℃; Preferred refrigeration work consumption is between the 0-280W, and heating power adopts the interior warm in the horizontal direction field distribution of liquid of calibration cell of layer flow mode even between 0-1000W; Make calibration cell below the actuating medium liquid level at least the level temperature in the 50mm evenly be superior to 0.01 ℃ through testing level temperature field.
The calibration cell of the utility model can accurately be examined and determine the pairing temperature sensor of calorimeter, has improved the measurement accuracy of calorimeter, helps improving efficiency of energy utilization, prevents energy dissipation.
By the concrete embodiment and the description of the course of work; Can be conveniently the calibrating groove structure of the utility model and principle of work be understood and implemented; But it should be appreciated by those skilled in the art that the specific embodiments or the embodiment that enumerate in this instructions, only in order to understand the technology contents of the utility model; Under the situation of purport that does not deviate from the utility model and scope; The utility model can carry out multiple change in form with on the details, and those skilled in the art can be according to concrete calibrating requirement, and each parts in the foregoing description are reasonably selected and made up; And details of carrying out to a certain extent and pro forma variation, it still will drop on the utility model and require within protection and the scope of disclosure.
Claims (6)
1. a calorimeter pairing temperature sensor is examined and determine calibration cell; Comprise: first cell body and second cell body; And the control system that first cell body and second cell body are controlled respectively; It is characterized in that: the liquid in the mixing chamber of said first cell body gets into first working cavity through foot passage, and liquid has stable temperature in first working cavity; Liquid in the mixing chamber of said second cell body gets into second working cavity through foot passage, and liquid has stable temperature in second working cavity.
2. calibrating calibration cell as claimed in claim 1 is characterized in that: first cell body further comprises the stirring system that cooperates with mixing chamber, the heating component that the liquid of mixing chamber near zone is heated.
3. calibrating calibration cell as claimed in claim 1; It is characterized in that: second cell body further comprises the stirring system that cooperates with mixing chamber; The heating component that the liquid of mixing chamber near zone is heated, and the cooling assembly that the liquid of mixing chamber near zone is freezed.
4. like each described calibrating calibration cell of claim 1-3, it is characterized in that: in said mixing chamber, be provided with the control temperature meter, this control temperature meter is measured the temperature in the mixing chamber.
5. like each described calibrating calibration cell of claim 1-3, it is characterized in that: above first working cavity and second working cavity, have upper end cover respectively, said pairing temperature sensor is inserted in first and second working cavities through upper end cover.
6. like each described calibrating calibration cell of claim 1-3; It is characterized in that: the sidewall of first working cavity and second working cavity is spreader plate, and the liquid that flows through foot passage gets into said first cavity and said second working cavity through said spreader plate respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200031542U CN202403839U (en) | 2012-01-06 | 2012-01-06 | Calorimeter temperature sensor pair verification thermostatic bath |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200031542U CN202403839U (en) | 2012-01-06 | 2012-01-06 | Calorimeter temperature sensor pair verification thermostatic bath |
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| CN202403839U true CN202403839U (en) | 2012-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012200031542U Expired - Fee Related CN202403839U (en) | 2012-01-06 | 2012-01-06 | Calorimeter temperature sensor pair verification thermostatic bath |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564647A (en) * | 2012-01-06 | 2012-07-11 | 中国计量科学研究院 | Thermostatic bath for verifying temperature sensor paired with calorimeter |
-
2012
- 2012-01-06 CN CN2012200031542U patent/CN202403839U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564647A (en) * | 2012-01-06 | 2012-07-11 | 中国计量科学研究院 | Thermostatic bath for verifying temperature sensor paired with calorimeter |
| CN102564647B (en) * | 2012-01-06 | 2014-09-17 | 中国计量科学研究院 | Thermostatic bath for verifying temperature sensor paired with calorimeter |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20130106 |
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| CF01 | Termination of patent right due to non-payment of annual fee |