CN2708283Y - Fluid temperature difference sensor - Google Patents
Fluid temperature difference sensor Download PDFInfo
- Publication number
- CN2708283Y CN2708283Y CN 200420030251 CN200420030251U CN2708283Y CN 2708283 Y CN2708283 Y CN 2708283Y CN 200420030251 CN200420030251 CN 200420030251 CN 200420030251 U CN200420030251 U CN 200420030251U CN 2708283 Y CN2708283 Y CN 2708283Y
- Authority
- CN
- China
- Prior art keywords
- fluid
- temperature difference
- operating rod
- temperature
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 34
- 238000007789 sealing Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 230000008602 contraction Effects 0.000 abstract 1
- 239000003814 drug Substances 0.000 abstract 1
- 230000005611 electricity Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 238000011897 real-time detection Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 238000003786 synthesis reaction Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 18
- 238000006073 displacement reaction Methods 0.000 description 7
- 208000002925 dental caries Diseases 0.000 description 5
- 230000003068 static effect Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002153 concerted effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
Landscapes
- Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
Abstract
The utility model discloses a fluid temperature difference sensor is a measuring instrument for real-time detection or control dynamic fluid temperature difference. The gas temperature sensor uses a sealed metal box as a temperature measuring element, and utilizes the expansion and contraction of gas in the box to expand or retract a sealed end of a soft elastic corrugated pipe communicated with the gas temperature sensor so as to push the operating rod which is in contact with and tightly abutted against a centering gasket to indicate or control the temperature difference of the fluid to be measured. The utility model discloses can be used to occasions that need survey or control two bundles of fluid difference in temperature such as heating system's calorimetric measurement, chemical industry batching, medicament synthesis, need not electricity, simple structure, cost are low, easy production.
Description
Technical field
The utility model relates to a kind of gauging instrument that fluid temperature difference detects or the temperature difference is controlled that is used for.
Background technology
When the calculating of some calorifics amounts, care usually be not the temperature of calculating object, but temperature difference.Obtaining of temperature difference can be by finding the solution two temperature value computings, but must add some intermediary operation processes, and detecting to the temperature difference makes troubles.At present, the prior art of test fluid temperature and device have multiple, wherein, Chinese patent application number: 85202504, open/day for announcing: as to disclose a kind of gas temperature sensing controler on May 14th, 1986, can realize the constant temperature of controlling object is controlled automatically.This sensing controler is made temperature element with airtight can, utilize expanding with heat and contract with cold of the interior gas of box, make soft elastic film expansion or withdrawal on the gear box that communicates with it, directly promote to contact and low tight operating rod, with the control heat supply with soft elastic film.But control with the temperature difference of this sensing controler detection two beams fluid or to the temperature difference of two beams fluid, need additional other operation and computing, use inconvenience.
Summary of the invention
The purpose of this utility model is that a kind of detection or control instrument that directly obtains the two beams fluid temperature approach will be provided.
The purpose of this utility model is achieved in that operating rod is suffered to remain static when axially making a concerted effort to be zero.When the temperature for the treatment of fluid measured in two cavitys was identical, the pressure of gas was identical in two cans, and the pressure that acts on two soft elastic bellows sealed end inboards equates that operating rod is remained static by the axial force of balance; When the fluid temperature (F.T.) in the right cavity raises (during the inner fluid temperature rise of left chamber, principle is identical), gas in the can is because of expanded by heating, under approximate constant volume change situation, the pressure of gas is with corresponding increase, act on the corresponding increase of pressure of sylphon seal end inboard, the axial resultant direction that operating rod is subjected to left, thereby, operating rod will be moved to the left, till bounce increment and airpressure axle power increment balance that two corrugated tubes that are connected on the operating rod axis produce, this moment, operating rod remains static once more.The displacement that operating rod produces under above-mentioned twice stationary state promptly is the calibration value of the current two chamber inner fluid temperature difference.
Below the temperature difference of the present utility model detected principle give quantitative explanation:
Be located at the temperature of two chamber fluids when identical, the volume of gas is that V, pressure are that P, can ambient fluid temperature are that T, gas law constant are G in can and the UNICOM's body thereof, have according to The Ideal-Gas Equation: PV=GT is when right cavity inner fluid temperature rise Δ T, gas has by approximate constant volume change: Δ PV=G Δ T, if the compression area of sylphon seal end inboard is S, the pressure increment that then acts on sylphon seal end inboard is:
ΔF＝SΔP＝SGΔT/V
Left and right two corrugated tubes are preset at squeezed state and before use within elastic deformation, if two corrugated tube series connection back global stiffness coefficients are K, because right chamber fluid temperature rise, the displacement Δ L of operating rod horizontal left, then: Δ L=Δ F/K=(SG/KV) Δ T, promptly the axial internal clearance of operating rod (displacement) is directly proportional with the temperature difference of two chamber fluids.The axial displacement of operating rod promptly is the calibration value of current two chamber fluid temperature differences, by the mensuration to the axial displacement of operating rod, reaches the purpose that two chamber fluid temperature differences are measured.
The thermal media that the utility model uses is a gas, and with solid and liquid phase ratio, the temperature-sensitive amplitude is big, is quick on the draw, and can react to less difference variation, obtains higher differential temperature survey precision.
Description of drawings
Fig. 1 is the fundamental diagram according to the fluid temperature difference sensor that the utility model proposes.
The embodiment fluid temperature difference sensor is by being installed in essential identical, a pair of gas temperature sensor, operating rod (7) that structural symmetry is provided with in the watchcase (3) and pointer (6), index dial (9) and balancing controls (10) formation thereof that is fixed on the operating rod mid point.Gas temperature sensor comprise conduit (4) and with can (1), charge/discharge gas mouth (12), the soft elastic bellows (11) of its seal joining.
A middle chamber (8) and two cavitys (2) for the treatment of that fluid measured is flowed through are arranged in the watchcase (3).Can (1) places cavity (2) also by conduit (4) and soft elastic bellows (11) UNICOM that places the sealing of middle chamber (8) one ends, the centering pad (5) that operating rod (7) contacts and pushes against and corrugated tube (11) one ends connect firmly, two conduits (4) and operating rod (7) three's axis conllinear setting and level are installed.
The utility model before use, need an amount of gas (hydrogen, oxygen or air) by isobaric being encapsulated in two cans (1) of charge/discharge gas mouth (12), before cavity (2) access failure fluid, the balancing controls of adjusting on the index dial (9) (10) make pointer (6) sensing scale 0 place and lock balancing controls (10).
During the test fluid temperature difference, earlier two bundles are treated that fluid measured feeds respectively in two cavitys (2), when two beams fluid temperature to be measured is identical, the interior gas pressure intensity of cause two cans (1) is identical, the axle pressure that acts on operating rod (7) two ends equates, makes operating rod (7) stress balance and remains static; When fluid temperature (F.T.) raises in the cavity (2) (principle is identical during reduction), the interior gas of can in this cavity (1) is because of thermal expansion, gas pressure intensity increases in the box, the sealed end inside pressure of corrugated tube (11) increases, this pressure acts on operating rod (7) axle head by centering pad (5), operating rod (7) is produced to be moved axially, with till the gaseous tension increment equates, operating rod (7) remains static because of a dynamic balance once more until reverse elastic force increment that two series connection corrugated tubes (11) produce.On index dial (9), corresponding scale value promptly is the calibration value of fluid temperature difference in two cavitys (2) by pointer (6) indication in the axial displacement of operating rod (7) twice stationary state,
The utility model can also be as controller, and the displacement that produces the corresponding temperature difference with operating rod (7) is controlled the temperature difference of fluid in two cavitys (2), plays the constant difference controller.
Claims (1)
- Fluid temperature difference sensor, it is identical to it is characterized in that being equipped with in the watchcase (3) essence, a pair of gas temperature sensor and operating rod (7) that structural symmetry is provided with, gas temperature sensor comprises the airtight can (1) that places the cavity (2) for the treatment of the thermometric fluid and flowing through, conduit (4) with the inner UNICOM of can (1), charge/discharge gas mouth (12) with conduit (4) UNICOM, and one end and conduit (4) connect the soft elastic bellows (11) of other end sealing, place operating rod (7) in the cavity (8) to contact and push against at the centering pad (5) that connects firmly with corrugated tube (11), operating rod (7) is installed with a pair of conduit (4) three's axis conllinear setting and level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420030251 CN2708283Y (en) | 2004-01-30 | 2004-01-30 | Fluid temperature difference sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420030251 CN2708283Y (en) | 2004-01-30 | 2004-01-30 | Fluid temperature difference sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2708283Y true CN2708283Y (en) | 2005-07-06 |
Family
ID=34849812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420030251 Expired - Fee Related CN2708283Y (en) | 2004-01-30 | 2004-01-30 | Fluid temperature difference sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2708283Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007104180A1 (en) * | 2006-03-13 | 2007-09-20 | Dongbing Chen | Over temperature alarming display apparatus |
| CN104848957A (en) * | 2014-12-02 | 2015-08-19 | 重庆斯凯力科技有限公司 | Resistance wire temperature sensor |
| CN107314500A (en) * | 2017-05-27 | 2017-11-03 | 大连民族大学 | A kind of pneumatic temperature regulating device |
| CN110530529A (en) * | 2019-08-14 | 2019-12-03 | 宋振铎 | The detection system of infrared thermal imaging equipment |
| CN111233494A (en) * | 2020-03-12 | 2020-06-05 | 浙江吉成新材股份有限公司 | Non-pressure preparation method and device of boron carbide ceramic |
-
2004
- 2004-01-30 CN CN 200420030251 patent/CN2708283Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007104180A1 (en) * | 2006-03-13 | 2007-09-20 | Dongbing Chen | Over temperature alarming display apparatus |
| CN101133307B (en) * | 2006-03-13 | 2010-05-19 | 陈东兵 | Over-temperature alarm display device |
| CN104848957A (en) * | 2014-12-02 | 2015-08-19 | 重庆斯凯力科技有限公司 | Resistance wire temperature sensor |
| CN107314500A (en) * | 2017-05-27 | 2017-11-03 | 大连民族大学 | A kind of pneumatic temperature regulating device |
| CN108151234A (en) * | 2017-05-27 | 2018-06-12 | 大连民族大学 | A kind of pneumatic environmentally friendly temperature regulating device |
| CN110530529A (en) * | 2019-08-14 | 2019-12-03 | 宋振铎 | The detection system of infrared thermal imaging equipment |
| CN111233494A (en) * | 2020-03-12 | 2020-06-05 | 浙江吉成新材股份有限公司 | Non-pressure preparation method and device of boron carbide ceramic |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |