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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France
Prior art keywords
pressure
transducer
fluid
sensor
contg
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Granted
Application number
FR9206750A
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French (fr)
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FR2691802B1 (en
Inventor
Fouache Pascal
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CONTROLE MEASURE REGULATION
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CONTROLE MEASURE REGULATION
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Priority to FR9206750A priority Critical patent/FR2691802B1/en
Publication of FR2691802A1 publication Critical patent/FR2691802A1/en
Application granted granted Critical
Publication of FR2691802B1 publication Critical patent/FR2691802B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details 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
    • G01L19/0092—Pressure sensor associated with other sensors, e.g. for measuring acceleration or temperature
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING 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
    • G01D21/00—Measuring or testing not otherwise provided for
    • G01D21/02—Measuring two or more variables by means not covered by a single other subclass
    • 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
    • G01K1/02—Means for indicating or recording specially adapted for thermometers
    • G01K1/04—Scales
    • G01K1/045—Scales temperature indication combined with the indication of another variable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines 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
La presentente invention a pour objet un capteur mixte de pression et de température
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.MIXED PRESSURE AND TEMPERATURE SENSOR
The present invention relates to a mixed pressure and temperature sensor
It concerns all sectors of industry in which both the temperature and the pressure of the same fluid must be measured, which is the case for example of diesel engines, turbines of all types, reducers, presses hydraulic, chemical or petroleum 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, the temperature and pressure measurements are carried out by separate sensors, which requires for each of them a boss or a tapping on the installation, as well as a connection cable with possible protective conduit.

Le brevet français N" 2 442 966 deposé par la
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". 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:
1". Du fait que la pression à mesurer règne à l'intérieur du boîtier, le systeme est pratiquement inutilisable pour des pressions élevées
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. French patent No. 2,442,966 filed by the
German company Robert BOSCH describes a "device for detecting the pressure and the temperature of the aspirated air circulating in the pipe of an internal combustion engine". This system is characterized by a housing external to the tubing but communicating with it, in which the sensors are mounted, which has several drawbacks:
1 ". Because the pressure to be measured prevails inside the housing, the system is practically unusable for high pressures
20. The temperature is measured in a "chamber" where the fluid flow conditions are very different from what they are inside the organ in which this quantity must be known, which has the effect of distort the results, or at least delay them.

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. 3. As the fluid penetrates into the housing which contains the measurement elements and the associated electronic circuits, the use of the device described can only be envisaged in practice for air, to the exclusion of all liquid or corrosive fluids, or very 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. 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. The device according to the present invention eliminates these drawbacks, while making it possible to halve the costs of installation and maintenance of the sensors. In fact, the measurements are carried out inside the monitored organ, within the fluid vein itself, which ensures precise, reliable and instant results, whatever the pressure, the temperature and the nature of this 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 consists of the combination of a sealed tube containing a temperature sensor, immersed in the fluid to be measured and carried by a body fixed on the passage member of this fluid and provided with holes allowing the transmission of pressure to a element sensitive thereto, said body comprising one or more electronic circuits for adapting the measurement signals, as well as a connection element 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:
la figure 1 est une coupe axiale du capteur mixte par deux plans perpendiculaires suivant les flèches
B-B de la figure 2,
et la figure 2 représente le dispositif vu suivant la flèche A de la figure 1. In the accompanying drawings, given by way of nonlimiting example of one of the embodiments of the subject of the invention:
Figure 1 is an axial section of the mixed sensor by two perpendicular planes according to the arrows
BB of figure 2,
and FIG. 2 represents the device seen according to arrow A in FIG. 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, consists of a body 1 on which is mounted a sealed tube 2 plunging into the fluid stream whose pressure and temperature are to be known.

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 protective cover 4 carrying an external electrical connector 5, is fixed to the piping or the fluid passage member by means of a threaded end fitting 6 fitting in a tapping arranged in such a way that, when the sensor is in place, the end of the waterproof tube 2 is located at the precise point where the temperature must 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 endpiece 6 is traversed by one or more holes 7 intended to transmit the pressure of the fluid and communicating, on the one hand, with the zone of passage of said fluid and, on the other hand, with an internal housing in which is located a pressure-sensitive transducer 9, fitted with a seal 10 preventing the penetration of the 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 Il for processing or d adaptation of the electrical measurement signals making it possible 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 waterproof 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 there is an internal temperature probe 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 FIG. 1, the pressure transducer is connected to an electronic circuit 11 itself connected to the external connector 5, while the temperature probe 12 is connected directly to the latter by a cable 13 passing through the sensor.

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

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 can be envisaged, resulting in a seal produced by a seal positioned differently.

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

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 constituent elements gives the object of the invention a maximum of useful effects which had not, 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, containing at one end an internal temperature probe (12) or a thermocouple, and crimped, glued or welded at the other end in the body (1) of the sensor fixed on the passage member of this fluid and provided with one or more holes (7) allowing the transmission of the pressure, a pressure transducer (9) located inside said body, the latter comprising a or several electronic circuits (11) for adapting the measurement signals, as well as an external electrical connection element (5). 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 ". Mixed pressure and temperature sensor, applicable in all sectors of industry in which both the temperature and the pressure of the same fluid must be measured, 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. 3. Device according to any one of the preceding claims, characterized in that the body (1) comprises a compartment (3) with protective cover (4) carrying the external electrical connection element (5) and containing the one or more electronic circuits (11) for adapting the measurement signals enabling them to be converted into standardized analog or digital signals. 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 to the piping or the fluid passage member by means of a threaded end piece (6) adjusting in a tapping disposed ae such so that, when the sensor is in place, the end of the waterproof tube (2) is located at the precise point where the temperature must be measured, the threaded end being traversed by the hole or holes (7) intended to transmit the pressure fluid 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). 4. Device according to any one of the preceding claims, characterized in that the hole (s) (7) communicate, on the one hand, with the fluid passage area and, on the other hand, with the pressure transducer ( 9), said transducer being fitted with a seal (10) preventing the penetration of the fluid into the body (1) of the sensor, or the transmission of 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 Device according to any one of the preceding claims, characterized in that the body (1) of the sensor made of composite materials making it possible to reduce the cost of production.
FR9206750A 1992-05-27 1992-05-27 MIXED PRESSURE AND TEMPERATURE SENSOR. Expired - Fee Related FR2691802B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9206750A FR2691802B1 (en) 1992-05-27 1992-05-27 MIXED PRESSURE AND TEMPERATURE SENSOR.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9206750A FR2691802B1 (en) 1992-05-27 1992-05-27 MIXED PRESSURE AND TEMPERATURE SENSOR.

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

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Cited By (13)

* 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 ABBPATENT 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
CN106546343A (en) * 2015-09-23 2017-03-29 洪钟国 Electric wire connecting junction formula temperature sensor
CN111947044A (en) * 2020-07-29 2020-11-17 万江新能源集团有限公司 Water leakage detection device for directly buried pipeline

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 (22)

* 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
US5975842A (en) * 1997-01-14 1999-11-02 Grundfos A/S Sensor arrangement
EP0853232A3 (en) * 1997-01-14 2001-09-12 Grundfos A/S Sensor arrangement
EP1835265A2 (en) 1997-01-14 2007-09-19 Grundfos A/S Sensor assembly
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 ABBPATENT 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
US7954994B2 (en) * 2005-11-29 2011-06-07 Robert Bosch Gmbh Combined pressure/temperature sensor having centric 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
WO2007078817A2 (en) * 2005-12-21 2007-07-12 Honeywell International Inc. Modular sensing apparatus
WO2007078817A3 (en) * 2005-12-21 2007-08-30 Honeywell Int 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 Insertion sensor for measuring pressure and temperature in combination
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
CN106546343A (en) * 2015-09-23 2017-03-29 洪钟国 Electric wire connecting junction formula temperature sensor
CN106546343B (en) * 2015-09-23 2019-10-25 洪钟国 Electric wire connecting junction formula temperature sensor
CN111947044A (en) * 2020-07-29 2020-11-17 万江新能源集团有限公司 Water leakage detection device for directly buried pipeline

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