DE202007004440U1 - Temperature probe for measuring temperature of medium flowing in flow channel, has pipeline with surface exhibiting recess covered by shield, where temperature of medium is measured close to center of pipeline and medium is mixed at recess - Google Patents
Temperature probe for measuring temperature of medium flowing in flow channel, has pipeline with surface exhibiting recess covered by shield, where temperature of medium is measured close to center of pipeline and medium is mixed at recess Download PDFInfo
- Publication number
- DE202007004440U1 DE202007004440U1 DE202007004440U DE202007004440U DE202007004440U1 DE 202007004440 U1 DE202007004440 U1 DE 202007004440U1 DE 202007004440 U DE202007004440 U DE 202007004440U DE 202007004440 U DE202007004440 U DE 202007004440U DE 202007004440 U1 DE202007004440 U1 DE 202007004440U1
- Authority
- DE
- Germany
- Prior art keywords
- temperature
- medium
- pipeline
- recess
- flow channel
- 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 - Lifetime
Links
- 239000000523 sample Substances 0.000 title abstract description 3
- 230000001747 exhibiting effect Effects 0.000 title 1
- 239000002184 metal Substances 0.000 claims abstract 2
- 229910001092 metal group alloy Inorganic materials 0.000 claims abstract 2
- 239000000853 adhesive Substances 0.000 description 10
- 230000001070 adhesive effect Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000009529 body temperature measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 229910001200 Ferrotitanium Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000003848 UV Light-Curing Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
- G01K1/143—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations for measuring surface temperatures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
- G01K13/026—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow of moving liquids
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
Description
Die Erfindung betrifft einen Temperaturfühler zur Messung der Temperatur eines in einem Strömungskanal strömenden Mediums.The The invention relates to a temperature sensor for measuring the temperature one in a flow channel flowing Medium.
Um die Temperatur eines Mediums, welches durch einen Strömungskanal strömt, zu messen, werden üblicherweise diskret aufgebaute Temperaturfühler durch ein Loch in der Wand des Strömungskanals in diesen eingebaut. In der rohrförmigen Fühlerspitze ist dabei der Temperatursensor eingebaut.Around the temperature of a medium flowing through a flow channel flows, to measure, become common discreet temperature sensor built into it through a hole in the wall of the flow channel. In the tubular probe tip the temperature sensor is installed.
Bei diesen Anwendungen ist eine Reinigung des Temperaturfühlers und insbesondere der Grenzfläche, die zwischen dem Temperatursensor und dem Loch im Strömungskanal angeordnet ist, nur schwer möglich, da sich durch den Strömungswiderstand des rohrförmigen Temperaturfühlers Verunreinigungen an Stellen anlagern können, die durch den Temperaturfühler von der Strömung abgeschattet werden. Für Anwendungsfälle, bei denen eine hohe hygienische Reinheit des Mediums erforderlich ist, ist diese Messmethode ungeeignet.at These applications is a cleaning of the temperature sensor and especially the interface, between the temperature sensor and the hole in the flow channel arranged is difficult, because of the flow resistance of the tubular temperature sensor Contaminants can accumulate in places caused by the temperature sensor of the flow to be shaded. For Use cases, where a high hygienic purity of the medium required is, this method of measurement is inappropriate.
Eine weitere Methode der Temperaturmessung eines durch einen Strömungskanal strömenden Mediums besteht darin, dass auf einer meist aus Keramik bestehenden Rohrleitung, welche in den Strömungskanal eingesetzt wird, Temperatursensoren appliziert sind. Durch diese Temperatursensoren wird die Temperatur des strömenden Mediums an der Rohrleitungswand gemessen.A another method of measuring temperature through a flow channel flowing medium is that on a mostly ceramic existing pipeline, which in the flow channel is used, temperature sensors are applied. Through this Temperature sensors become the temperature of the flowing medium at the pipe wall measured.
Bei dieser Messmethode kann es leicht zu einer Verfälschung des Messwertes durch die Umgebungstemperatur kommen. Der verursachte Messfehler ist dabei umso größer, je mehr die Umgebungstemperatur von der Temperatur des Mediums abweicht und je geringer die Strömungsgeschwindigkeit des Mediums ist. Weiterhin bildet sich bei kleinen Strömungsgeschwindigkeiten in der Rohrleitung ein etwa parabelförmiges Strömungsgeschwindigkeitsprofil aus, wobei an der Rohrleitungswand das Medium eine Geschwindigkeit Null und in der Mitte der Rohrleitung die maximale Strömungsgeschwindigkeit besitzt. Damit einher geht auch ein etwa parabelförmiges Temperaturprofil über den Rohrleitungsquerschnitt. Bei den an der Rohrleitungswand gemessenen Temperaturen handelt es sich demnach stets um eine Temperatur, die sich von der mittleren Temperatur des Mediums und damit von der zu messenden Temperatur unterscheidet. Die Messung der mittleren Temperatur des Mediums ist mit diesem Verfahren nicht möglich.at This measurement method can easily lead to a falsification of the measured value the ambient temperature come. The measurement error caused is all the more bigger, ever more the ambient temperature deviates from the temperature of the medium and the lower the flow rate of the medium. Furthermore, it forms at low flow rates in the pipeline an approximately parabolic flow velocity profile from, wherein at the pipe wall, the medium at a speed Zero and in the middle of the pipeline the maximum flow velocity has. This is accompanied by an approximately parabolic temperature profile over the Pipe cross-section. At the measured at the pipe wall Temperatures are therefore always a temperature that from the medium temperature of the medium and thus from the different temperature to be measured. The measurement of the mean Temperature of the medium is not possible with this method.
Der Erfindung liegt die Aufgabe zu Grunde, einen Temperaturfühler anzugeben, der zur Messung von Temperaturen strömender Medien dient. Dabei soll dieser Temperaturmessfühler gut spülbar sein und die Messung der Temperatur des Mediums weitgehend ohne Verfälschung durch die Temperaturverteilung in dem strömenden Medium oder durch die Umgebungstemperatur möglich sein.Of the The invention is based on the object of specifying a temperature sensor, which serves to measure temperatures of flowing media. It should this temperature sensor good washable and measuring the temperature of the medium largely without adulteration by the temperature distribution in the flowing medium or by the ambient temperature possible be.
Die Aufgabe wird erfindungsgemäß mit einer Anordnung gelöst, welche die in Anspruch 1 angegebenen Merkmale aufweist.The Task is according to the invention with an arrangement solved, which has the features specified in claim 1.
Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.advantageous Embodiments of the invention are the subject of the dependent claims.
Bei dem erfindungsgemäßen Temperaturfühler ist eine Rohrleitung in einen Strömungskanal eingebracht, wobei die Oberfläche dieser Rohrleitung eine Vertiefung aufweist und am Boden der Vertiefung ein Temperatursensor angeordnet ist. Die Vertiefung wird durch ein Wärmeschutzschild vollständig abgedeckt.at the temperature sensor according to the invention is a pipeline is introduced into a flow channel, the surface this pipe has a recess and at the bottom of the recess a temperature sensor is arranged. The recess is through a Heat shield completely covered.
Die Messung der Temperatur eines Mediums, welches durch einen Strömungskanal strömt, erfolgt durch Temperaturleitung vom Medium zur Rohrleitung und von der Rohrleitung zum Temperatursensor. Durch die Befestigung des Tempera tursensors am Boden der Vertiefung findet die Temperaturmessung mehr zur Mitte der Rohleitung hin statt und durch den Strömungswiderstand der Vertiefung wird das Medium durchmischt. Weiterhin kann durch die Abdeckung der Vertiefung mittels eines Wärmeschutzschildes ein Temperaturübergang zwischen der Umgebungstemperatur und dem Temperatursensor vermieden werden.The Measurement of the temperature of a medium flowing through a flow channel flows, takes place by temperature conduction from the medium to the pipeline and from the pipeline to the temperature sensor. By attaching the tempera ture sensor at the bottom of the depression, the temperature measurement is more centered the raw line instead and through the flow resistance of the recess is mixed the medium. Furthermore, by the cover of the recess by means of a heat shield a temperature transition between the ambient temperature and the temperature sensor avoided become.
Der erfindungsgemäße Temperaturfühler ermöglicht die Messung der Temperatur eines strömenden Mediums, wobei der Messwert durch das Wärmeschutzschild nicht von der Umgebungstemperatur beeinflusst ist. Durch die Messung der Temperatur nahe der Mitte der Rohrleitung und die Durchmischung des Mediums an der Vertiefung, kann die mittlere Temperatur des Mediums mit hoher Genauigkeit gemessen werden.Of the Temperature sensor according to the invention enables the Measuring the temperature of a flowing Medium, wherein the measured value by the heat shield not from the Ambient temperature is affected. Close by measuring the temperature the middle of the pipeline and the mixing of the medium at the Deepening, the medium temperature of the medium can with high accuracy be measured.
Ein Ausführungsbeispiel der Erfindung wird im Folgenden anhand einer Zeichnung näher erläutert.One embodiment The invention will be explained in more detail below with reference to a drawing.
Darin zeigt:In this shows:
Die
in
Wenn
das Medium
Durch
den beschriebenen Temperaturfühler ist
es möglich,
die mittlere Temperatur eines Mediums
- 11
- Strömungskanalflow channel
- 22
- Mediummedium
- 33
- Rohrleitungpipeline
- 4.1...4.24.1 ... 4.2
- Dichtungpoetry
- 55
- Vertiefungdeepening
- 66
- Temperatursensortemperature sensor
- 7.1...7.27.1 ... 7.2
- Klebeverbindungenadhesive bonds
- 88th
- WärmeschutzschildHeat shield
- 99
- Elektrische Leitungelectrical management
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202007004440U DE202007004440U1 (en) | 2007-03-27 | 2007-03-27 | Temperature probe for measuring temperature of medium flowing in flow channel, has pipeline with surface exhibiting recess covered by shield, where temperature of medium is measured close to center of pipeline and medium is mixed at recess |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202007004440U DE202007004440U1 (en) | 2007-03-27 | 2007-03-27 | Temperature probe for measuring temperature of medium flowing in flow channel, has pipeline with surface exhibiting recess covered by shield, where temperature of medium is measured close to center of pipeline and medium is mixed at recess |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE202007004440U1 true DE202007004440U1 (en) | 2007-06-06 |
Family
ID=38170531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE202007004440U Expired - Lifetime DE202007004440U1 (en) | 2007-03-27 | 2007-03-27 | Temperature probe for measuring temperature of medium flowing in flow channel, has pipeline with surface exhibiting recess covered by shield, where temperature of medium is measured close to center of pipeline and medium is mixed at recess |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE202007004440U1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008029837B3 (en) * | 2008-06-25 | 2010-02-18 | Stiebel Eltron Gmbh & Co. Kg | Fastening device for temperature sensor at outer wall of liquid-conveying pipe, particularly pipe of heat pump, has cavity which is inserted in outer wall of pipe |
| ITUB20154286A1 (en) * | 2015-10-09 | 2017-04-09 | Ip Cleaning S R L | HOT WATER CLEANER WITH TEMPERATURE CONTROL |
-
2007
- 2007-03-27 DE DE202007004440U patent/DE202007004440U1/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008029837B3 (en) * | 2008-06-25 | 2010-02-18 | Stiebel Eltron Gmbh & Co. Kg | Fastening device for temperature sensor at outer wall of liquid-conveying pipe, particularly pipe of heat pump, has cavity which is inserted in outer wall of pipe |
| ITUB20154286A1 (en) * | 2015-10-09 | 2017-04-09 | Ip Cleaning S R L | HOT WATER CLEANER WITH TEMPERATURE CONTROL |
| WO2017060852A1 (en) * | 2015-10-09 | 2017-04-13 | Ip Cleaning S.P.A. | Hot water cleaner with temperature control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R207 | Utility model specification |
Effective date: 20070712 |
|
| R150 | Utility model maintained after payment of first maintenance fee after three years |
Effective date: 20100301 |
|
| R151 | Utility model maintained after payment of second maintenance fee after six years |
Effective date: 20130306 |
|
| R158 | Lapse of ip right after 8 years |