CN204214566U - A kind of temperature measuring equipment - Google Patents
A kind of temperature measuring equipment Download PDFInfo
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- CN204214566U CN204214566U CN201420768500.5U CN201420768500U CN204214566U CN 204214566 U CN204214566 U CN 204214566U CN 201420768500 U CN201420768500 U CN 201420768500U CN 204214566 U CN204214566 U CN 204214566U
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Abstract
The utility model provides a kind of temperature measuring equipment, the tinsel that this device adopts thermal conductivity good is as temperature-sensing element, and adopted by tinsel double wound to be wound on skeleton to be fixed, to be wound with skeleton wiry when measuring is positioned in measured zone, length due to tinsel and skeleton is greater than the length of measured zone, so tinsel can extend to all positions of measured zone, and then the temperature of all positions of perception measured zone, resistance wiry can characterize measured zone temperature.Compared with prior art, the utility model can gather the temperature of all positions in measured zone, improves measuring accuracy, and only has an one metal wire wiring comparatively simple, so temperature survey is carried out, with practical requirement in the region that can be applicable to wider range.
Description
Technical field
The utility model relates to technical field of automation, particularly relates to a kind of temperature measuring equipment.
Background technology
At present in field of temperature measurement, need to measure the region of wider range, such as: carry out temperature survey from surface level to the longitudinal region of underground 2m or temperature survey is carried out to the length areas of 2m horizontal direction, in prior art, temperature survey is carried out to the measured zone of wider range, main employing Multi probe multi-spots way, namely multiple temperature sensor is on average set in measured zone, temperature sensor is utilized to gather the temperature of multiple points of measured zone, then using the temperature of the average of the temperature value of multiple point as measured zone.
But the size of temperature sensor is less, only can measure the temperature of a point, multiple sensor also only can measure the temperature obtaining multiple points, and the temperature can not measured in whole region, cause measuring accuracy lower, and temperature sensor quantity is more, wiring is comparatively complicated, and need technician to safeguard multiple temperature sensor, add the workload of technician.
Given this, need a kind of new temperature-sensing element, temperature survey is carried out, with practical requirement in the region that can be applicable to wider range.
Utility model content
The utility model provides a kind of temperature measuring equipment, and temperature survey is carried out, with practical requirement in the region that can be applicable to wider range.
To achieve these goals, the utility model provides following technological means:
A kind of temperature measuring equipment, comprising:
Skeleton, employing double wound is wound in the tinsel on described skeleton, and described skeleton and described length wiry are not less than the length of measured zone.
Preferably, described tinsel is copper wire, iron wire or platinum filament.
Preferably, described tinsel is provided with enamel insulated wire, and described tinsel is unstress state.
Preferably, also comprise:
The compensating resistance be connected with tinsel first end;
The first internal lead be connected with described compensating resistance and the second internal lead, the 3rd internal lead be connected with tinsel second end and the 4th internal lead.
Preferably, also comprise:
Be sheathed on the stainless steel protection pipe outside described tinsel, described skeleton, compensating resistance, the first internal lead, the second internal lead the 3rd internal lead and the 4th internal lead.
Preferably, the sealed bottom of described stainless steel protection pipe, described skeleton is fixed on the bottom of described stainless steel protection pipe.
Preferably, 304 stainless-steel tubes that described stainless steel protection pipe is formed in one, and pipe thickness is 1mm.
Preferably, also comprise:
Be arranged at the first outer lead be connected with described first internal lead outside described stainless steel protection pipe;
Be arranged at the second outer lead be connected with described second internal lead outside described stainless steel protection pipe;
Be arranged at the 3rd outer lead be connected with described 3rd internal lead outside described stainless steel protection pipe;
Be arranged at the 4th outer lead be connected with described 4th internal lead outside described stainless steel protection pipe.
Preferably, after described fixing skeleton, described stainless steel protection pipe and winding, length wiry is 3m.
The utility model provides a kind of temperature measuring equipment, the tinsel that this device adopts thermal conductivity good is as temperature-sensing element, and adopted by tinsel double wound to be wound on skeleton to be fixed, to be wound with skeleton wiry when measuring is positioned in measured zone, length due to tinsel and skeleton is greater than the length of measured zone, so tinsel can extend to all positions of measured zone, and then the temperature of all positions of perception measured zone, resistance wiry can characterize measured zone temperature.Compared with prior art, the utility model can gather the temperature of all positions in measured zone, improves measuring accuracy, and only has an one metal wire wiring comparatively simple, so temperature survey is carried out, with practical requirement in the region that can be applicable to wider range.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of Fig. 1 a kind of temperature measuring equipment disclosed in the utility model embodiment;
Fig. 2 is the structural representation of the utility model embodiment another temperature measuring equipment disclosed;
The structural representation of Fig. 3 a kind of temperature measuring equipment use procedure disclosed in the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the utility model provides a kind of temperature measuring equipment, comprising:
Skeleton 11, employing double wound is wound in the tinsel 12 on described skeleton, and the length of described skeleton 11 and described tinsel 12 is not less than the length of measured zone.Tinsel 12 is a complete tinsel, can form complete loop when measuring.Double wound is be wound on skeleton 11 after a complete tinsel 11 is folded in half into two strands by centre.
The diameter of section of tinsel 12 and entire length, can design according to actual demand, then adopts longer tinsel 12 when measured zone is longer.When the electric current needing to flow through tinsel 12 is larger, then adopt the tinsel 12 that diameter of section is larger.
And described tinsel 12 is provided with enameled wire, the object of enameled wire is insulation, short circuit between the two strands of tinsels preventing from adopting double wound, and enameled wire film is very thin in micron level, can not affect temperature-sensitive performance wiry.When tinsel 12 adopts double wound to be wound on skeleton 11, tinsel 12 should be unstress state, so that tinsel 12 is when expanded by heating or cooling meat, neither by the constraint of skeleton 11, if tinsel 12 has stress to exist, then the resistance of tinsel 12 can be caused to increase, affect measuring accuracy.
Preferably, described tinsel 12 is good copper wire, iron wire or the platinum filament of thermal conductivity.
The utility model provides a kind of temperature measuring equipment, the tinsel 12 that this device adopts thermal conductivity good is as temperature-sensing element, and adopted by tinsel 12 double wound to be wound on skeleton 11 to be fixed, when measuring, the skeleton 11 being wound with tinsel 12 is positioned in measured zone, length due to tinsel 12 and skeleton 11 is greater than the length of measured zone, so tinsel 12 can extend to all positions of measured zone, and then the temperature of all positions of perception measured zone, the resistance of tinsel 12 can characterize measured zone temperature.Compared with prior art, the utility model can gather the temperature of all positions in measured zone, improves measuring accuracy, and only has an one metal wire wiring comparatively simple, so temperature survey is carried out, with practical requirement in the region that can be applicable to wider range.
As shown in Figure 2, in order to tinsel 12 being applicable to the standard platinum resistance standard of PT100 or PT500, increase by one is needed to be series at compensating resistance 13 on tinsel 12, the value method acquisition by experiment of compensating resistance 13, concrete, measure the resistance value A of PT100 or PT500 at a certain temperature, then at the resistance value B measuring tinsel 12, the difference of resistance value A and resistance value B is the value of compensating resistance 13.The accuracy of calibration metal silk 12 is carried out by compensating resistance 13.
As shown in Figure 2, using tinsel 12 and skeleton as temperature-sensing element, generally four-line measurement method is adopted to carry out temperature survey to measured zone comparatively accurate, so temperature-sensing element to be drawn four lead-in wires, the convenient four-wire system that adopts carries out temperature survey, because the first end of tinsel 12 has sealed in compensating resistance 13, so draw two lead-in wires in one end of compensating resistance 13, first internal lead a and the second internal lead b, two lead-in wires are drawn, the 3rd internal lead c and the 4th internal lead d at the second end of tinsel 12.In order to the output resistance of the resistance temperature-sensing element preventing four internal leads has an impact, generally select temperature-resistant material to make internal lead.
As shown in Figure 2; when tinsel 12 is exposed in measured zone; easily be subject to the impact of external environment condition; and it is easily damaged; in order to protect tinsel 12, the utility model additionally provides the stainless steel protection pipe 14 be sheathed on outside described tinsel 12, described skeleton 11, compensating resistance 13, first internal lead a, the second internal lead b the 3rd internal lead c and the 4th internal lead d.
Stainless steel protection pipe 14 is an end closure, one-body molded 304 stainless-steel tubes not having weld seam, and pipe thickness is 1mm, its tube wall is thinner so thermal conductivity is good, so tinsel 12 can be protected can not to affect again the temperature of tinsel perception measured zone, after manufacture completes stainless steel protection pipe, by tinsel 12, described skeleton 11, compensating resistance 13, first internal lead a, second internal lead b the 3rd internal lead c and the 4th internal lead d loads in stainless steel protection pipe, then rubber seal temperature-sensing element is integrally carried out, and ensure that sealing is better, to prevent external environment from impacting tinsel 12.
Move left and right in stainless steel protection pipe 14 to prevent tinsel 12; affect temperature-sensitive performance wiry and measuring accuracy; so skeleton to be fixed on the bottom of stainless steel protection pipe, so that tinsel 12 can be fixed on skeleton, will arbitrarily movement measuring accuracy be caused to reduce.
As shown in Figure 2, in order to use above-mentioned temperature-sensing element to carry out temperature survey, also need to increase the first outer lead A being arranged at and being connected with described first internal lead a outside stainless steel protection pipe 14; Be arranged at the second outer lead B be connected with described second internal lead b outside stainless steel protection pipe 14; Be arranged at the 3rd outer lead C be connected with described 3rd internal lead c outside stainless steel protection pipe 14; Be arranged at the 4th outer lead D be connected with described 4th internal lead d outside stainless steel protection pipe 14.
Because four internal leads are arranged at stainless steel protection pipe 14 inside; so use material to have requirement to it; require that its internal lead uses temperature-resistant wire; four outer leads are arranged at outside stainless steel protection pipe 14; material then no requirement (NR) is used to it, so lead-in wire is divided into internal lead and outer lead by the utility model, and; internal lead is pre-set at temperature-sensing element inside, and directly additional four outer leads can use four-wire system to carry out temperature survey in use.
When specific design; temperature-sensing element can be set to 3m, namely after described skeleton 11, described stainless steel protection pipe 14 and winding, the Design of length of tinsel 12 is 3m, and general measured zone is less than 3m; so for general measured zone, the temperature-sensing element of about 3m is suitable for.When measured zone is larger, then can the longer temperature-sensing element of factory length.
As shown in Figure 3, the utility model provides a kind of temperature-sensing element that uses and carries out temperature survey diagram, when specifically measuring, first outer lead I+ of temperature-sensing element 400 is connected with constant flow module 300 with the 3rd outer lead I-, second outer lead V+ is connected with voltage acquisition module 200 with described 4th outer lead V-, and described constant flow module 300 is connected with processor 100 with described voltage acquisition module 200;
Described constant flow module 300, measures electric current for exporting to described temperature-sensing element 100 after receiving described processor 100 to send the steering order of output measurement electric current;
Described voltage acquisition module 200, for gathering the measuring voltage of the analog quantity in described temperature-sensing element 400 response measurement region, and is sent to described processor 100 after the measuring voltage of described analog quantity being transferred to the measuring voltage of digital quantity;
Described processor 100, for receiving the measuring voltage of described digital quantity, obtains measuring resistance according to this measuring voltage and described measurement Current calculation, and described measuring resistance is converted to measured zone temperature.
Temperature-sensing element 400 has four terminals, be respectively I+ terminals, I-terminals, V+ terminals and V-terminals, can work to make temperature-sensing element 400 adopts constant flow module 300 to provide working current for temperature-sensing element 400, constant flow module 300 output current is subject to processing the control of device 100, after sending at processor 100 control command exporting and measure electric current, constant flow module 300 just exports the measurement electric current of corresponding current value to temperature-sensing element 400, temperature-sensing element 400, after electric current is measured in reception, just can start the temperature measuring object under test.
Because the resistance value of temperature-sensing element 400 changes along with the temperature variation of object under test, so the resistance of temperature-sensing element 400 can the temperature in response measurement region, in order to calculate the resistance of temperature-sensing element 400, the measuring voltage of temperature-sensing element 400 is gathered by voltage acquisition module 200, the voltage that voltage acquisition module 200 collects is analog quantity, conveniently processor 100 pairs of voltages process, need to carry out analog to digital conversion to measuring voltage, measuring voltage is converted to the measuring voltage of digital quantity, then the measuring voltage of digital quantity is sent to processor 100 to process.
After processor 100 receives the measuring voltage of digital quantity, combine the measurement electric current being sent to constant flow module 300 again, utilize Ohm law that measuring voltage and measurement electric current are done business, using quotient as measuring resistance, the i.e. resistance of platinum sensor 400, then according to Callendar-Van Dusen (CVD) equation:
The resistance of platinum sensor 400 is converted to object under test temperature, thus completes the thermometric process of measured zone.Wherein, in CVD equation, R (t) represents resistance value, R
0temperature is the resistance of 0 DEG C, and a, b, c are coefficient, and t is the temperature corresponding with resistance value.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiment, between each embodiment same or similar part mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. a temperature measuring equipment, is characterized in that, comprising:
Skeleton, employing double wound is wound in the tinsel on described skeleton, and described skeleton and described length wiry are not less than the length of measured zone.
2. device as claimed in claim 1, it is characterized in that, described tinsel is copper wire, iron wire or platinum filament.
3. device as claimed in claim 1, it is characterized in that, described tinsel is provided with enamel insulated wire, and described tinsel is unstress state.
4. device as claimed in claim 1, is characterized in that, also comprise:
The compensating resistance be connected with tinsel first end;
The first internal lead be connected with described compensating resistance and the second internal lead, the 3rd internal lead be connected with tinsel second end and the 4th internal lead.
5. device as claimed in claim 4, is characterized in that, also comprise:
Be sheathed on the stainless steel protection pipe outside described tinsel, described skeleton, compensating resistance, the first internal lead, the second internal lead the 3rd internal lead and the 4th internal lead.
6. device as claimed in claim 5, it is characterized in that, the sealed bottom of described stainless steel protection pipe, described skeleton is fixed on the bottom of described stainless steel protection pipe.
7. the device as described in claim 5 or 6, is characterized in that, 304 stainless-steel tubes that described stainless steel protection pipe is formed in one, and pipe thickness is 1mm.
8. device as claimed in claim 5, is characterized in that, also comprise:
Be arranged at the first outer lead be connected with described first internal lead outside described stainless steel protection pipe;
Be arranged at the second outer lead be connected with described second internal lead outside described stainless steel protection pipe;
Be arranged at the 3rd outer lead be connected with described 3rd internal lead outside described stainless steel protection pipe;
Be arranged at the 4th outer lead be connected with described 4th internal lead outside described stainless steel protection pipe.
9. device as claimed in claim 8, is characterized in that, after described fixing skeleton, described stainless steel protection pipe and winding, length wiry is 3m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420768500.5U CN204214566U (en) | 2014-12-09 | 2014-12-09 | A kind of temperature measuring equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420768500.5U CN204214566U (en) | 2014-12-09 | 2014-12-09 | A kind of temperature measuring equipment |
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| CN204214566U true CN204214566U (en) | 2015-03-18 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784181A (en) * | 2016-04-21 | 2016-07-20 | 诸琢玉 | Temperature apparatus capable of measuring and controlling linear length and method thereof |
| CN106028236A (en) * | 2016-06-22 | 2016-10-12 | 青岛海信移动通信技术股份有限公司 | Loudspeaker and terminal |
| CN106871774A (en) * | 2016-12-29 | 2017-06-20 | 北京遥测技术研究所 | A kind of compound sensor for measuring recession thickness and ablation layer temperature |
| CN109282910A (en) * | 2017-07-20 | 2019-01-29 | 成都凯天电子股份有限公司 | Double redundancy temperature-sensing element (device) |
| CN112114177A (en) * | 2020-10-13 | 2020-12-22 | 吉林大学 | Amperemeter and current measuring method based on thermal deformation of alloy wire |
| CN114739529A (en) * | 2022-05-11 | 2022-07-12 | 山东信隆机电有限公司 | Mechanical high-low voltage motor temperature measuring device capable of reflecting temperature through resistor |
-
2014
- 2014-12-09 CN CN201420768500.5U patent/CN204214566U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784181A (en) * | 2016-04-21 | 2016-07-20 | 诸琢玉 | Temperature apparatus capable of measuring and controlling linear length and method thereof |
| CN105784181B (en) * | 2016-04-21 | 2018-04-06 | 诸琢玉 | The temperature device and its method of measurement control line length |
| CN106028236A (en) * | 2016-06-22 | 2016-10-12 | 青岛海信移动通信技术股份有限公司 | Loudspeaker and terminal |
| CN106871774A (en) * | 2016-12-29 | 2017-06-20 | 北京遥测技术研究所 | A kind of compound sensor for measuring recession thickness and ablation layer temperature |
| CN106871774B (en) * | 2016-12-29 | 2019-06-18 | 北京遥测技术研究所 | It is a kind of for measuring the compound sensor of recession thickness and ablation layer temperature |
| CN109282910A (en) * | 2017-07-20 | 2019-01-29 | 成都凯天电子股份有限公司 | Double redundancy temperature-sensing element (device) |
| CN112114177A (en) * | 2020-10-13 | 2020-12-22 | 吉林大学 | Amperemeter and current measuring method based on thermal deformation of alloy wire |
| CN114739529A (en) * | 2022-05-11 | 2022-07-12 | 山东信隆机电有限公司 | Mechanical high-low voltage motor temperature measuring device capable of reflecting temperature through resistor |
| CN114739529B (en) * | 2022-05-11 | 2022-11-25 | 山东信隆机电有限公司 | Mechanical high-low voltage motor temperature measuring device capable of reflecting temperature through resistor |
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