FR2691802A1 - Combined temp. and pressure sensing probe e.g. for diesel motors etc. - electrically and mechanically connects sealed leak-proof tube contg. thermocouple to body contg. pressure transducer and electronics, with passages for transmitting fluid pressure to transducer. - Google Patents

Combined temp. and pressure sensing probe e.g. for diesel motors etc. - electrically and mechanically connects sealed leak-proof tube contg. thermocouple to body contg. pressure transducer and electronics, with passages for transmitting fluid pressure to transducer. Download PDF

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Publication number
FR2691802A1
FR2691802A1 FR9206750A FR9206750A FR2691802A1 FR 2691802 A1 FR2691802 A1 FR 2691802A1 FR 9206750 A FR9206750 A FR 9206750A FR 9206750 A FR9206750 A FR 9206750A FR 2691802 A1 FR2691802 A1 FR 2691802A1
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FR
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Application
Patent type
Prior art keywords
pressure
transducer
fluid
tube
body
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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.)
Granted
Application number
FR9206750A
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French (fr)
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FR2691802B1 (en )
Inventor
Fouache Pascal
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CONTROLE MESURE REGULATION SA
CONTROLE MEASURE REGULATION
Original Assignee
CONTROLE MESURE REGULATION SA
CONTROLE MEASURE REGULATION
Priority date (The priority date 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 date listed.)
Filing date
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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/0092Pressure sensor associated with other sensors, e.g. for measuring acceleration or temperature
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00Measuring or testing not otherwise provided for
    • G01D21/02Measuring two or more variables by means not covered by a single other subclass
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/02Special applications of indicating or recording means, e.g. for remote indications
    • G01K1/04Scales
    • G01K1/045Scales temperature indication combined with the indication of another variable
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00Engines characterised by air compression and subsequent fuel addition
    • F02B3/06Engines characterised by air compression and subsequent fuel addition with compression ignition

Abstract

The sensor has a body (1) with a leak-proof tube (2) attached to a threaded ferrule (6) which screws into the container of fluid to be monitored. Inside the tube (2) is a temp. probe or thermocouple (12) with a cable (13) to external electronics. On top of the body (1) is a protective cap (4), enclosing a compartment (3) contg. a pressure transducer (9) and associated electronics (11), with an electrical connector (5). Holes (7) in the body allow fluid to pass to the transducer. The combined sensor is screwed directly into a pipe, vessel, etc. with the leak-proof tube containing a thermocouple immersed in the fluid to be monitored. USE/ADVANTAGE - For turbines, reducers, hydraulic presses and chemical and petroleum industry. Provides high pressure and temp. measurements in fluids, including corrosive fluids, without errors due to sampling lines, and at lower cost.

Description

CAPTEUR MIXTE DE PRESSION ET DE TEMPÉRATURE SENSOR JOINT PRESSURE AND TEMPERATURE
La presentente invention a pour objet un capteur mixte de pression et de température Presentente the invention relates to a mixed pressure and temperature sensor
Il concerne tous les secteurs de l'industrie dans lesquels on doit mesurer à la fois la température et la pression d'un même fluide, ce qui est le cas par exemple des moteurs Diesel, des turbines de tout type, des réducteurs, des presses hydrauliques, des installations chimiques ou pétrolières, etc. It covers all sectors of the industry in which we must measure both the temperature and pressure of the same fluid, which is the case for diesel engines, turbines of all types of gearboxes, presses hydraulic, chemical or oil installations, etc.

Actuellement, les mesures de température et de pression sont effectuées par des capteurs distincts, ce qui nécessite pour chacun d'eux un bossage ou un piquage sur l'installation, ainsi qu'un câble de raccordement avec conduit éventuels de protection. Currently, temperature and pressure measurements were carried out by separate sensors, requiring for each boss, or a tap on the installation, and a connecting cable leads possible protection.

Le brevet français N" 2 442 966 deposé par la French Patent N "2,442,966 filed by the
Société allemande Robert BOSCH decrit un "dispositif pour détecter la pression et la température de l'air aspiré circulant dans la tubulure d'un moteur à combustion interne". German company Robert Bosch describes a "device for detecting the pressure and temperature of the intake air flowing in the pipe of an internal combustion engine". Ce système est caractérisé par un boîtier extérieur à la tubulure mais communiquant avec elle, dans lequel sont montes les capteurs, ce qui présente plusieurs inconvénients: This system is characterized by an outer casing to the tubing but communicating therewith, wherein the sensors are mounted, which has several disadvantages:
1". Du fait que la pression à mesurer règne à l'intérieur du boîtier, le systeme est pratiquement inutilisable pour des pressions élevées 1 ". Since the pressure to be measured prevails inside the housing, the system is virtually unusable for high pressures
20. La température est mesuree dans une "chambre" ou les conditions d'écoulement du fluide sont très différentes de ce qu'elles sont à l'intérieur de l'organe dans lequel cette grandeur doit être connue, ce qui a pour effet de fausser les resultats, ou tout au moins de les retarder. 20. The temperature is measured in a "room" or the fluid flow conditions are very different from what they are inside of the organ in which this magnitude must be known, which has the effect of distort the results, or at least to delay.

3 . 3. Le fluide pénétrant dans le boîtier qui contient les éléments de mesures et les circuits délectroniques associés, l'utilisation de l'appareil décrit n'est envisageable en pratique que pour l'air, à l'exclusion de tous fluides liquides, ou corrosifs, ou très chauds. The fluid entering the housing which contains the measuring elements and délectroniques circuits associated, the use of the apparatus described is possible in practice only for the air, to the exclusion of all liquid fluids, or corrosive, or hot.

Le dispositif selon la présente invention supprime ces inconvenients, tout en permettant de diviser par deux les coûts d'installation et d'entretien des capteurs. The device of the present invention overcomes these drawbacks while allowing halve installation costs and maintenance of the sensors. En effet les mesures sont effectuées à lintérieur de l'organe surveillé, au sein même de la veine fluide, ce qui assure des résultats précis, fiables et instantanés, quelles que soient la pression, la température et la nature de ce fluide. Indeed measurements are made inside the monitored device, even within the fluid stream, which ensures accurate, reliable and instantaneous, regardless of the pressure, temperature and nature of the fluid.

Il est constitué par la combinaison d'un tube étanche contenant un capteur de température, plongeant dans le fluide à mesurer et porté par un corps fixé sur l'organe de passage de ce fluide et pourvu de perçages permettant la transmission de la pression à un élément sensible à celle-ci, ledit corps comportant un ou plusieurs circuits électroniques d'adaptation des signaux de mesure, ainsi qu'un élément de raccordement tel que connecteur ou presse-étoupe et un capot de protection. It is constituted by the combination of a sealed tube containing a temperature sensor immersed in the fluid to be measured and carried by a body attached to the passage member of this fluid and provided with bores for transmitting the pressure to a responsive element therein, said body having one or more electronic circuits for adaptation of the measurement signals, and a connecting member such as connector or cable gland and a protective cover.

Sur les dessins annexes, donnés à titre d'exemple non limitatif d'une des formes de réalisation de l'objet de l'invention: On the accompanying drawings, given by way of non-limiting example of embodiments of the object of the invention:
la figure 1 est une coupe axiale du capteur mixte par deux plans perpendiculaires suivant les flèches Figure 1 is an axial section of the joint sensor by two perpendicular planes following the arrows
BB de la figure 2, BB of Figure 2,
et la figure 2 représente le dispositif vu suivant la flèche A de la figure 1. and Figure 2 shows the device seen along arrow A of Figure 1.

Le dispositif, figures 1 et 2, est constitue d'un corps 1 sur lequel est monté un tube étanche 2 plongeant dans la veine fluide dont on veut connaître la pression et la température. The device Figures 1 and 2, comprises a body 1 on which is mounted a sealed tube 2 dipping into the fluid stream which it is desired to know the pressure and temperature.

Le corps 1, qui comporte un compartiment 3 avec capot de protection 4 portant un connecteur électrique 5 externe, est fixé sur la tuyauterie ou l'organe de passage du fluide grâce à un embout fileté 6 s'ajustant dans un taraudage disposé de telle maniere que, lorsque le capteur est en place, l'extrémité du tube étanche 2 soit située au point précis où la température doit être mesurée. The body 1, which comprises a compartment 3 with cover 4 carrying an electric five external connector, is attached to the piping or fluid passage member with a threaded end 6 fitting into an internal thread arranged in such a way that when the sensor is in place, the end of the waterproof tube 2 is located at the point where temperature is to be measured.

L'embout fileté 6 est traversé par un ou plusieurs perçages 7 destinés à transmettre la pression du fluide et communiquant, d'une part, avec la zone de passage dudit fluide et, d'autre part, avec un logement interne dans lequel se trouve un transducteur 9 sensible à la pression, équipé d'un joint 10 interdisant la pénétration du fluide dans le corps 1, ou la transmission de la pression au compartiment 3. Ce dernier est destiné à recevoir le ou les circuits électroniques Il de traitement ou d'adaptation des signaux électriques de mesure permettant de les convertir en des signaux standardises analogiques ou numériques. The threaded stud 6 is crossed by one or more bores 7 for transmitting fluid pressure and communicating on the one hand, with the passage area of ​​said fluid and on the other hand, with an inner housing in which is a transducer 9 sensitive to pressure, equipped with a seal 10 preventing the penetration of fluid into the body 1, or the transmission of pressure to the compartment 3. the latter is intended to receive the electronic circuit or circuits It processing or adjustment of measurement of electrical signals to convert them into standardized analog or digital signals.

Le tube etanche 2 est serti, collé ou soude à l'une de ses extremités dans le corps 1 du capteur et fermé à l'autre où se trouve une sonde interne de température 12, OU un thermocouple. The sealed tube 2 is crimped, glued or welded at one of its ends in the body 1 of the sensor and closed at the other where an internal temperature sensor 12 or a thermocouple.

Sur l'exemple de la figure 1, le transducteur de pression est raccordé à un circuit électronique 11 luimême raccordé au connecteur externe 5, alors que la sonde de température 12 est reliée directement à ce dernier par un câble 13 traversant le capteur. In the example of Figure 1, the pressure transducer is connected to an electronic circuit 11 itself connected to the external connector 5, while the temperature sensor 12 is directly connected thereto by a cable 13 through the sensor.

L'embout fileté 6 peut être remplacé par tout moyen assurant la même fonction, tel que bride ou autre. The threaded stud 6 may be replaced by any means providing the same function as flange or other.

D'autres formes de transducteur de pression 9 peuvent être envisagées, entraînant une réalisation de l'étanchéité par joint positionnée différement. Other forms of pressure transducer 9 may be considered, resulting in realization of lip seals positioned differently.

Le corps 1 du capteur peut être realisé en matériaux divers adaptés à chaque application. The body 1 of the sensor may be made of various materials suitable for each application. Il est en particulier envisageable d'utiliser de matériaux composites permettant de diminuer le coût de la réalisation. It is possible in particular to use composite materials to reduce the cost of implementation.

Le positionnement des divers éléments constitutifs donne à l'objet de l'invention un maximum d'effets utiles qui n'avaient pas été, à ce jour, obtenus par des dispositifs similaires. The positioning of the various components gives the object of the invention a maximum of useful effects which had not been, to date, been obtained by similar devices.

Claims (2)

    REVENDICATIONS caractérisé par la combinaison d'un tube étanche (2) plongeant dans le fluide à mesurer, contenant à une extrémité une sonde interne de température (12) ou un thermocouple, et serti, colle ou soudé à l'autre extrémité dans le corps (1) du capteur fixé sur l'organe de passage de ce fluide et pourvu de un ou plusieurs perçages (7) permettant la transmission de la pression un transducteur de pression (9) situé à l'intérieur dudit corps, ce dernier comportant un ou plusieurs circuits électroniques (11) d'adaptation des signaux de mesure, ainsi qu'un élément de raccordement électrique externe (5). CLAIMS characterized by the combination of a sealed tube (2) immersed in the fluid to be measured, comprising at one end an internal temperature probe (12) or a thermocouple, and crimped, glued or welded to the other end in the body (1) sensor unit attached to the passage member of this fluid and provided with one or more bores (7) for transmitting the pressure a pressure transducer (9) located within said body, the latter having a or more electronic circuits (11) for adaptation of the measurement signals, and an external electrical connection member (5).
  1. 1". Capteur mixte de pression et de température, applicable dans tous les secteurs de l'industrie dans lesquels on doit mesurer à la fois la température et la pression d'un même fluide, 1 ". Joint pressure and temperature sensor, which is applicable in all industrial areas in which one must measure both the temperature and pressure of the same fluid,
    3 . 3. Dispositif selon l'une quelconque des revendications précédentes, se caractérisant par le fait que le corps (1) comporte un compartiment (3) avec capot de protection (4) portant l'élément de raccordement électrique externe (5) et contenant le ou les circuits électroniques (11) d'adaptation des signaux de mesure permettant de les convertir en des signaux standardisés analogiques ou numériques. Device according to any one of the preceding claims characterized in that the body (1) comprises a compartment (3) with cover (4) carrying the external electrical connecting element (5) and containing the electronic circuitry (11) measuring signals adjustment to convert them into standardized analog or digital signals.
  2. 2". Dispositif selon la revendication 1, se caracterisant par le fait que le corps (1) est fixé sur la tuyauterie ou l'organe de passage du fluide grâce à un embout fileté (6) s'ajustant dans un taraudage disposé ae telle manière que, lorsque le capteur est en place, l'extrémité du tube étanche (2) soit située au point précis où la température doit être mesurée, l'embout fileté étant traversé par le ou les perçages (7) destinés à transmettre la pression du fluide 2 ". Device according to claim 1, characterized in that the body (1) is fixed on the pipe or the passage body fluid through a threaded end (6) fitting in an internal thread arranged such ae such that when the sensor is in place, the end of the sealed tube (2) is located at the point where temperature is to be measured, the screw sleeve being traversed by the one or more bores (7) for transmitting the pressure fluid
    4 . 4. Dispositif selon l'une quelconque des revendications précédentes, se caractérisant par le fait que le ou les perçages (7) communiquent, d'une part, avec la zone de passage du fluide et, d'autre part, avec le transducteur de pression (9), ledit transducteur étant équipé d'un joint (10) interdisant la pénétration du fluide dans le corps (1) du capteur, ou la transmission de la pression au compartiment (3). Device according to any one of the preceding claims characterized in that the one or more bores (7) communicating, firstly, with the passage area of ​​the fluid and, on the other hand, with the pressure transducer ( 9), said transducer being equipped with a seal (10) preventing the penetration of fluid into the body (1) of the sensor, or transmitting the pressure to the compartment (3).
    50 Dispositif selon l'une quelconque des revendications précédentes, se caractérisant par le fait que le corps (1) du capteur réalisé en matériaux composites permettant de diminuer le coût de la réalisation. 50 Apparatus according to any preceding claim, characterized in that the body (1) of the sensor made of composite materials to reduce the cost of the realization.
FR9206750A 1992-05-27 1992-05-27 Joint pressure sensor and temperature. Expired - Fee Related FR2691802B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9206750A FR2691802B1 (en) 1992-05-27 1992-05-27 Joint pressure sensor and temperature.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9206750A FR2691802B1 (en) 1992-05-27 1992-05-27 Joint pressure sensor and temperature.

Publications (2)

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FR2691802A1 true true FR2691802A1 (en) 1993-12-03
FR2691802B1 FR2691802B1 (en) 1997-04-18

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FR9206750A Expired - Fee Related FR2691802B1 (en) 1992-05-27 1992-05-27 Joint pressure sensor and temperature.

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0853232A2 (en) * 1997-01-14 1998-07-15 Grundfos A/S Sensor arrangement
EP0940666A3 (en) * 1998-03-05 2000-02-02 Palmer Environmental Limited Acoustically detecting leaks in pipes
EP1014057A1 (en) * 1998-12-22 2000-06-28 ABB PATENT GmbH Temperature measuring device with connecting head
EP1096241A1 (en) * 1999-11-01 2001-05-02 Delphi Technologies, Inc. Integrated pressure and temperature sensor for high pressure fluid
GB2382654A (en) * 2001-11-30 2003-06-04 Invensys Plc A combined pressure and temperature sensor unit
EP1413768A1 (en) * 2002-10-22 2004-04-28 Wilo Ag Pump with sensor in pump casing
WO2007078817A2 (en) * 2005-12-21 2007-07-12 Honeywell International Inc. Modular sensing apparatus
WO2008031691A1 (en) 2006-09-15 2008-03-20 Robert Bosch Gmbh Sensor plug for combined pressure- and temperature measurement
US7467891B2 (en) 2005-11-29 2008-12-23 Sensata Technologies, Inc. Sensor arrangement for measuring a pressure and a temperature in a fluid
US7954994B2 (en) * 2005-11-29 2011-06-07 Robert Bosch Gmbh Combined pressure/temperature sensor having centric temperature measurement
EP2479540A1 (en) * 2011-01-25 2012-07-25 Carl Freudenberg KG Rod sensor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2832757A1 (en) * 1978-07-26 1980-02-07 Veit Kg Bekleidungstechnik Control device for pressure temp. and liq. level in boilers - has sensor with temp. sensitive resistor and insulated tube forming capacitor
DE3839864A1 (en) * 1987-11-27 1989-06-08 Hitachi Ltd Transmitter for differential pressure
WO1991015740A1 (en) * 1990-04-06 1991-10-17 Companhia Masa Vetco Comércio E Indústria Integrated sensor-transducer device and pressure sensor-transducer
US5070706A (en) * 1990-07-10 1991-12-10 Sundstrand Corporation Superheat sensor with single coupling to fluid line

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2832757A1 (en) * 1978-07-26 1980-02-07 Veit Kg Bekleidungstechnik Control device for pressure temp. and liq. level in boilers - has sensor with temp. sensitive resistor and insulated tube forming capacitor
DE3839864A1 (en) * 1987-11-27 1989-06-08 Hitachi Ltd Transmitter for differential pressure
WO1991015740A1 (en) * 1990-04-06 1991-10-17 Companhia Masa Vetco Comércio E Indústria Integrated sensor-transducer device and pressure sensor-transducer
US5070706A (en) * 1990-07-10 1991-12-10 Sundstrand Corporation Superheat sensor with single coupling to fluid line

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1835265A2 (en) 1997-01-14 2007-09-19 Grundfos A/S Sensor assembly
US5975842A (en) * 1997-01-14 1999-11-02 Grundfos A/S Sensor arrangement
EP0853232A2 (en) * 1997-01-14 1998-07-15 Grundfos A/S Sensor arrangement
EP0853232A3 (en) * 1997-01-14 2001-09-12 Grundfos A/S Sensor arrangement
EP0940666A3 (en) * 1998-03-05 2000-02-02 Palmer Environmental Limited Acoustically detecting leaks in pipes
US6647762B1 (en) 1998-03-05 2003-11-18 Palmer Environmental Limited Detecting leaks in pipes
EP1014057A1 (en) * 1998-12-22 2000-06-28 ABB PATENT GmbH Temperature measuring device with connecting head
EP1096241A1 (en) * 1999-11-01 2001-05-02 Delphi Technologies, Inc. Integrated pressure and temperature sensor for high pressure fluid
GB2382654A (en) * 2001-11-30 2003-06-04 Invensys Plc A combined pressure and temperature sensor unit
GB2382654B (en) * 2001-11-30 2004-02-11 Invensys Plc A combined pressure and temperature sensor unit
EP1413768A1 (en) * 2002-10-22 2004-04-28 Wilo Ag Pump with sensor in pump casing
US7467891B2 (en) 2005-11-29 2008-12-23 Sensata Technologies, Inc. Sensor arrangement for measuring a pressure and a temperature in a fluid
US7954994B2 (en) * 2005-11-29 2011-06-07 Robert Bosch Gmbh Combined pressure/temperature sensor having centric temperature measurement
WO2007078817A3 (en) * 2005-12-21 2007-08-30 Honeywell Int Inc Modular sensing apparatus
WO2007078817A2 (en) * 2005-12-21 2007-07-12 Honeywell International Inc. Modular sensing apparatus
WO2008031691A1 (en) 2006-09-15 2008-03-20 Robert Bosch Gmbh Sensor plug for combined pressure- and temperature measurement
JP2010503000A (en) * 2006-09-15 2010-01-28 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツングRobert Bosch Gmbh Plug sensor for measuring a combination of pressure and temperature
US8038345B2 (en) 2006-09-15 2011-10-18 Robert Bosch Gmbh Sensor plug for combined pressure and temperature measurement
EP2479540A1 (en) * 2011-01-25 2012-07-25 Carl Freudenberg KG Rod sensor

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