CN201488841U - Novel heat pipe thermostatic slot for calibrating short type temperature sensor - Google Patents
Novel heat pipe thermostatic slot for calibrating short type temperature sensor Download PDFInfo
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- CN201488841U CN201488841U CN2009200300392U CN200920030039U CN201488841U CN 201488841 U CN201488841 U CN 201488841U CN 2009200300392 U CN2009200300392 U CN 2009200300392U CN 200920030039 U CN200920030039 U CN 200920030039U CN 201488841 U CN201488841 U CN 201488841U
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- heat pipe
- tube core
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- end cover
- temperature sensor
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Abstract
The utility model discloses a heat pipe thermostatic slot for calibrating a short type temperature sensor, which comprises a heat pipe condenser, a heat pipe core and a sensor cannula arranged inside the heat pipe core, wherein the position of the heat pipe condenser is higher than that of the upper end of the heat pipe core, and the heat pipe thermostatic slot is characterized in that the upper end of the heat pipe core is communicated with the lower end of the heat pipe condenser through a pipeline. Compared with an original bent pipe communication structure (which is connected with the middle part or the upper part of the heat pipe condenser), the improved structure of the heat pipe thermostatic slot increases the transmission power of a heat pipe, improves the dynamic performance of the heat pipe, reduces the temperature difference between parts nearby the upper end face of a testing jack and a heat pipe constant temperature zone, and improves the driving load capability of the region. The temperature field testing result also shows that the improved structure remarkably reduces the temperature difference between the upper parts of each sensor testing jack, has evener temperature distribution and is more beneficial to the calibration and testing of the short type sensor.
Description
Technical field
The utility model belongs to temperature correction/field tests, relates to a kind of portable constant temperature device based on hot pipe technique, is mainly used in the calibration/test of short-type temperature sensor.
Background technology
This paper alleged " short-type temperature sensor ", mean the temperature sensor of transducing part length≤180mm, the temperature-sensing element of these temperature sensors can be platinum resistance, thermopair, semiconductor, various expanding material, and temperature measurement range is limited between-40 ℃～+ 300 ℃ usually.The short-type temperature sensor that has have for install, the fixing steel flange dish of usefulness.
The subject matter of short-type temperature sensor be along sensor axis to, from the temperature-sensitive head to the external environment condition, in the less relatively range scale bigger thermograde is arranged, and driving vertically heat conduction (heat transfer) and measured medium to the heat interchange (heat exchange) at sensor temperature-sensitive position.The continuing of heat transfer process is that this is the basic reason that the short-type temperature sensor measuring error is big, calibration/test is difficult to keep certain temperature difference as cost between sensor temperature-sensitive position and the measured medium.Sensor is short more, and heat transfer and heat exchange are serious more, and measuring error is big more, and calibration/test is also difficult more.
The These characteristics of short-type temperature sensor makes it can't use conventional correcting device to calibrate.Conventional thermostatic oil bath, Water Tank with Temp.-controlled are restricted because of volatilization, smog even the burning of its liquid medium, and its temperature range can not the coverage test requirement; We once attempted using the stem body stove to calibrate short-type temperature sensor as thermostatic equipment, experiment showed, the vertical temperature of can not satisfying of a stem body stove index, particularly can not satisfy jack top temperature field index and can not use.Therefore, development, utility model calibrating short-type temperature sensor/test special-purpose thermostat (temperature source) are the basic ways that addresses the above problem, and also are the task of top priority.
The utility model content
The purpose of this utility model is with regard to being at the defective of above-mentioned prior art and a kind of heat pipe thermostatic bath for calibrating short-type temperature sensor is provided, this calibration cell can be in-40 ℃～+ 300 ℃ temperature range, in the effective perform region of insertion depth from 40mm to 180mm, providing maximum to be no more than 0.1 ℃ uniform temperature field, is the ideal temperature source of calibration/test short-type temperature sensor.
Its technical solution is as follows:
Calibrating short-type temperature sensor new heat pipe calibration cell, it comprises heat pipe condenser, heat pipe tube core, is located at the sensor intubate in the heat pipe tube core, and the heat pipe condenser present position is higher than heat pipe tube core upper end, has the metal flat that has around the sensor jack upper end with dut temperature sensor flange dish no-float on the described heat pipe tube core upper end cover at least.The face good by this plane and dut temperature sensor flange plane contacts, to tested sensor flange dish transfer of heat (or cold), reduce the temperature difference between ring flange and the sensor test bar as far as possible, thereby reduce the heat conduction of short-type temperature sensor, reduce test error (measurement result uncertainty).
As improvement of the present utility model, described heat pipe tube core upper end is by the lower end of pipeline connection heat pipe condenser.
The applicant shows that by a large amount of experiments effective working position of heat pipe condenser should be positioned at the part that is higher than horizontal cross over pipe, and the partial action that is lower than horizontal cross over pipe is very little.This improved structure was compared with former bend pipe connectivity structure (being connected in the middle part or the top of heat pipe condenser), increased the through-put power of heat pipe, improved the power performance of heat pipe, reduced near the temperature difference at position and heat-pipe constant-temperature district the test jack upper surface, improved this regional carrying load ability (short-type temperature sensor test, more obvious) with flanged dish.A temperature test result shows that also the improvement of structure obviously reduces each top, sensor test hole temperature difference, and Temperature Distribution is more even, more helps the calibration/test of short type sensor.
Improve on the other hand as of the present utility model, the utility model also comprises the metal heat-conducting lining, and the external diameter of the internal diameter of this metal heat-conducting lining and sensor thermometric bar adapts, and the internal diameter of external diameter and heat pipe sensor intubate adapts.
Short-type temperature sensor is inserted heat pipe thermostatic bath by the school jack before, should on the thermometric bar of sensor, put the metal heat-conducting lining of no-float.The external diameter of lining should have good fit with the tested sensor-specific jack of heat pipe thermostatic bath, and tolerance clearance is no more than 0.5mm.The temperature sensor of calibration difformity, different size should be equipped with different metal linings.These metal linings on the one hand with heat pipe thermostatic bath on tested sensor jack thermo-contact is preferably arranged, thermometric bar in tested sensor has thermo-contact preferably on the other hand, the test error of played and transmitted heat, elimination is because of sensor and the instrument connection size does not match, the air obstruct is brought.
As further improvement of the utility model, for the heat pipe thermostatic bath of serviceability temperature scope between 40 ℃～300 ℃, the close upper end cover place on tube core top, the auxiliary electrical gas ket is housed, in upper end cover, be inserted with the aids in temperature control sensor, can set the temperature of heat pipe tube core upper end cover by the aids in temperature control instrument.Under the inoperative situation of auxiliary heating, this temperature is lower than the internal temperature of heat pipe tube core slightly usually.By setting to the auxiliary heating instrument, the upper end cover temperature is equaled or suitably be higher than die temperature, remedy on which kind of degree because of expose on heat pipe tube core top, tested short sensor size restrictions factors such as (heat conduction that is brought) is to the influence of test result thereby be controlled at.
As further improvement of the utility model, the heat pipe thermostatic bath of serviceability temperature scope between-40 ℃～+ 50 ℃ is equipped with refrigerating plant or refrigeration part in the heat pipe condenser outside.To guarantee that tube core can reach desired cryogenic temperature.
Further improve as of the present utility model, described refrigerating plant is for to connect the refrigerating circuit of forming in proper order by compressor, condenser, kapillary, evaporator, solenoid valve, wherein evaporator is made up of heat pipe condenser outside coil, heat pipe upper end cover crack, heat pipe tube core outside coil, finishes evaporation process through heat pipe condenser outside coil, heat pipe upper end cover crack, heat pipe tube core outside coil successively from the cold-producing medium that kapillary flows out; Described upper end cover crack is one section body that heat pipe tube core upper end is separated out, and it highly generally is no more than 5 millimeters.According to above-mentioned design, because the expansion of cold-producing medium self-heating pipework condensation device shell coil pipe start vaporizer, so condenser temperature is minimum, helps condensation, the circulation of working medium in the heat pipe; The a little higher than heat pipe condenser of upper end cover crack temperature but be lower than its underpart die temperature, guaranteed the heat-exchange capacity (when the upper end cover position should guarantee heat energy that Absorbing Sensor ring flange and ambient atmosphere environment transmit, temperature was not higher than the bottom die temperature) at upper end cover position.Under the nominal situation, upper end cover than tube core low 0.5 ℃～3.5 ℃.
Description of drawings
The one-piece construction synoptic diagram of a kind of embodiment of Fig. 1 the utility model;
Fig. 2 is the one-piece construction synoptic diagram of the another kind of embodiment of the utility model;
Synoptic diagram when Fig. 3 inserts the heat pipe tube core for the utility model temperature sensor;
Fig. 4 is the structural representation of the utility model refrigerating plant.
Embodiment
As shown in Figure 1, the utility model heat pipe thermostatic bath for calibrating short-type temperature sensor, it comprises heat pipe condenser 1, heat pipe tube core 2, is located at the sensor intubate 3 in the heat pipe tube core 2, heat pipe condenser 1 present position is higher than the upper end of heat pipe tube core 4, and the upper end of heat pipe tube core 2 is communicated with the lower end of heat pipe condenser 1 by pipeline 5.Above-mentioned pipeline 5 can be straight tube, also can make suitable shape according to the layout needs.
As shown in Figure 3, around the utility model heat pipe tube core 2 upper end cover sensor jacks, the metal flat 8 with ring flange 61 no-floats of dut temperature sensor 6 is arranged.Before short-type temperature sensor 6 is inserted sensor intubate 3, should on the thermometric bar 62 of sensor 6, put the metal heat-conducting lining 7 of no-float.The lower end of heat conduction lining 7 can be open or closed.The external diameter of lining 7 should have good fitly with sensor intubate 3, and tolerance clearance is no more than 0.5mm.Calibrate the temperature sensor of difformity, different size, should be equipped with the metal lining of different size.These metal linings on the one hand with heat pipe thermostatic bath on tested sensor jack thermo-contact is preferably arranged, thermometric bar in tested sensor has thermo-contact preferably on the other hand, the test error of played and transmitted heat, elimination is because of sensor and the instrument connection size does not match, the air obstruct is brought.
For the heat pipe thermostatic bath of serviceability temperature scope between 40 ℃～300 ℃, near the upper end cover place, the auxiliary electrical gas ket is housed on tube core top, in upper end cover, be inserted with the aids in temperature control sensor, can set the temperature of heat pipe tube core upper end cover by the aids in temperature control instrument.As shown in Figure 2, for the heat pipe thermostatic bath of serviceability temperature scope between-40 ℃～+ 50 ℃, refrigerating plant is housed in heat pipe condenser 1 outside.As shown in Figure 4, described refrigerating plant is to connect the refrigerating circuit of forming by compressor 8, condenser 9, kapillary 10, evaporator 11, solenoid valve 12 orders, as shown in Figure 2, wherein evaporator 11 is made up of heat pipe condenser outside coil 13, heat pipe upper end cover crack 14, heat pipe tube core outside coil 15, finishes evaporation process through heat pipe condenser outside coil 13, heat pipe upper end cover crack 14, heat pipe tube core outside coil 15 successively from the cold-producing medium that kapillary 10 flows out.One section body that described upper end cover crack 14 is separated out for heat pipe tube core upper end, it highly generally is no more than 5 millimeters.
The utility model includes but are not limited to above embodiment, and it also can have other conspicuous adaptations in actual use.
Claims (8)
1. calibrating short-type temperature sensor new heat pipe calibration cell, it comprises heat pipe condenser, heat pipe tube core, is located at the sensor intubate in the heat pipe tube core, and the heat pipe condenser present position is higher than heat pipe tube core upper end, it is characterized in that having at least on the heat pipe tube core upper end cover metal flat that has around the sensor jack upper end with dut temperature sensor flange dish no-float.
2. calibrating short-type temperature sensor new heat pipe calibration cell according to claim 1 is characterized in that: described heat pipe tube core upper end is by the lower end of pipeline connection heat pipe condenser.
3. calibrating short-type temperature sensor new heat pipe calibration cell according to claim 1 and 2, it is characterized in that: the utility model also comprises the metal heat-conducting lining, the external diameter of the internal diameter of this metal heat-conducting lining and sensor thermometric bar adapts, and the internal diameter of external diameter and heat pipe sensor intubate adapts.
4. calibrating short-type temperature sensor new heat pipe calibration cell according to claim 1 and 2, it is characterized in that: for the heat pipe thermostatic bath of serviceability temperature scope between 50 ℃～300 ℃, the close upper end cover place on tube core top, the auxiliary electrical gas ket is housed, in upper end cover, be inserted with the aids in temperature control sensor, can set the temperature of heat pipe tube core upper end cover by the aids in temperature control instrument.
5. calibrating short-type temperature sensor new heat pipe calibration cell according to claim 3, it is characterized in that: for the heat pipe thermostatic bath of serviceability temperature scope between 50 ℃～300 ℃, the close upper end cover place on tube core top, the auxiliary electrical gas ket is housed, in upper end cover, be inserted with the aids in temperature control sensor, can set the temperature of heat pipe tube core upper end cover by the aids in temperature control instrument.
6. calibrating short-type temperature sensor new heat pipe calibration cell according to claim 1 and 2 is characterized in that: for the heat pipe thermostatic bath of serviceability temperature scope between-40 ℃～+ 50 ℃, in the heat pipe condenser outside refrigerating plant is housed.
7. calibrating short-type temperature sensor new heat pipe calibration cell according to claim 3 is characterized in that: for the heat pipe thermostatic bath of serviceability temperature scope between-40 ℃～+ 50 ℃, in the heat pipe condenser outside refrigerating plant is housed.
8. calibrating short-type temperature sensor new heat pipe calibration cell according to claim 7, it is characterized in that: described refrigerating plant is for to connect the refrigerating circuit of forming in proper order by compressor, condenser, kapillary, evaporator, solenoid valve, wherein evaporator is made up of heat pipe condenser outside coil, heat pipe upper end cover crack, heat pipe tube core outside coil, finishes evaporation process through heat pipe condenser outside coil, heat pipe upper end cover crack, heat pipe tube core outside coil successively from the cold-producing medium that kapillary flows out; Described upper end cover crack is one section body that heat pipe tube core upper end is separated out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200300392U CN201488841U (en) | 2009-07-20 | 2009-07-20 | Novel heat pipe thermostatic slot for calibrating short type temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200300392U CN201488841U (en) | 2009-07-20 | 2009-07-20 | Novel heat pipe thermostatic slot for calibrating short type temperature sensor |
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| Publication Number | Publication Date |
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| CN201488841U true CN201488841U (en) | 2010-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200300392U Expired - Fee Related CN201488841U (en) | 2009-07-20 | 2009-07-20 | Novel heat pipe thermostatic slot for calibrating short type temperature sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101608956A (en) * | 2009-07-20 | 2009-12-23 | 泰安磐然测控科技有限公司 | Heat pipe thermostatic bath for calibrating short-type temperature sensor |
| CN102854872A (en) * | 2010-11-14 | 2013-01-02 | 甘肃电力科学研究院 | Heat-pipe thermostatic bath for transformer temperature controller calibration |
| CN105738009A (en) * | 2016-02-02 | 2016-07-06 | 国网浙江省电力公司电力科学研究院 | Calibration device used for temperature monitor |
-
2009
- 2009-07-20 CN CN2009200300392U patent/CN201488841U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101608956A (en) * | 2009-07-20 | 2009-12-23 | 泰安磐然测控科技有限公司 | Heat pipe thermostatic bath for calibrating short-type temperature sensor |
| CN102854872A (en) * | 2010-11-14 | 2013-01-02 | 甘肃电力科学研究院 | Heat-pipe thermostatic bath for transformer temperature controller calibration |
| CN105738009A (en) * | 2016-02-02 | 2016-07-06 | 国网浙江省电力公司电力科学研究院 | Calibration device used for temperature monitor |
| CN105738009B (en) * | 2016-02-02 | 2018-09-04 | 国网浙江省电力公司电力科学研究院 | A kind of calibrating installation for temperature monitoring |
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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: 20100526 Termination date: 20130720 |