EP2895832A2 - Capteur haute température et procédé de fabrication d'un capuchon protecteur pour un capteur haute température - Google Patents

Capteur haute température et procédé de fabrication d'un capuchon protecteur pour un capteur haute température

Info

Publication number
EP2895832A2
EP2895832A2 EP13765340.8A EP13765340A EP2895832A2 EP 2895832 A2 EP2895832 A2 EP 2895832A2 EP 13765340 A EP13765340 A EP 13765340A EP 2895832 A2 EP2895832 A2 EP 2895832A2
Authority
EP
European Patent Office
Prior art keywords
protective
protective cap
protective cover
temperature sensor
cap
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.)
Withdrawn
Application number
EP13765340.8A
Other languages
German (de)
English (en)
Inventor
Heiko Lantzsch
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.)
Tesona GmbH and Co KG
Original Assignee
Tesona GmbH and Co KG
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
Publication date
Application filed by Tesona GmbH and Co KG filed Critical Tesona GmbH and Co KG
Publication of EP2895832A2 publication Critical patent/EP2895832A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • G01K1/08—Protective devices, e.g. casings
    • G01K1/12—Protective devices, e.g. casings for preventing damage due to heat overloading
    • 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
    • G01K1/08—Protective devices, e.g. casings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B5/00—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/08—Deep drawing or matched-mould forming, i.e. using mechanical means only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/42—Heating or cooling
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
    • C03B17/04—Forming tubes or rods by drawing from stationary or rotating tools or from forming nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2101/00—Use of unspecified macromolecular compounds as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/001—Tubular films, sleeves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3481—Housings or casings incorporating or embedding electric or electronic elements

Definitions

  • the present invention relates to a method for producing a protective cap for a high-temperature sensor with a sensor element, a protective cover, which at least partially surrounds the sensor element, and a protective cap, which is attached to the protective cover, and a high-temperature sensor with a sensor element, a protective cover, in particular one Protective tube which surrounds the sensor element at least partially and a protective cap which is attached to the protective cover.
  • High-temperature sensors are used, for example, to measure the temperature in exhaust pipes of petrol engines or in furnaces. They may be suitable for measuring temperatures of greater than 500 ° C.
  • a protective cover in particular a protective tube, for example made of metal.
  • DE 10 2008 060 033 A1 discloses a temperature sensor with a thermocouple having a heat-resistant sheathed cable whose end facing the measuring medium, a sensor element is arranged and in which are guided by a jacket tube of the sheathed cable electrical connection lines for the connection of the sensor element to an electronic evaluation unit. It is proposed that a protective sleeve is provided which has a one-piece front part without welds. In addition, it is proposed that the protective sleeve is provided at its front, the measuring medium side facing with a rounding.
  • a temperature sensor with a thermal element which has a heat-resistant sheath line, at the end of the measuring medium end facing a sensor element is arranged.
  • a metal tube of the sheath line electrical Anschl uss effet for connecting the sensor element to an electronic evaluation unit.
  • the temperature sensor shown should be operational up to temperatures of 1200 ° C and can detect rapid temperature changes.
  • the sensor element consists of a thermowire bead, which protrudes from the sheathed cable and is accommodated by a protective sheath, which is fastened on the end of the sheathed cable to which the measuring medium is attached.
  • the protective sheath has a one-piece front part without welds and the sheathed cable is a flexible, thin-walled metal tube with a small outer diameter, at the measuring medi to the opposite area lead wires are led out, which produce the desired connection to the on-board electronics.
  • the temperature sensor is attached to the measuring point with a special collar and a union nut.
  • a Hochtem is temperature sensor with a sensor element previously known, which is mounted in a protective tube.
  • the protective tube is surrounded by a stiffening tube, wherein the stiffening tube made of a material whose thermal expansion coefficient is higher than that of the material of which the protective tube is made.
  • the stiffening tube is firmly connected to a first region of the protective tube with the protective tube and in a second region of the protective tube is a stop element, which is also firmly connected to the protective tube.
  • the stiffening tube occurs due to its higher thermal expansion from a predetermined temperature in mechanical contact with the stop element, whereby the high temperature sensor from this temperature is mechanically stabilized.
  • the space between the sensor element and the protective tube cap is filled according to EP 2 196 787 A2 with a good heat-conducting material.
  • Fine silicon powder can be used for this purpose.
  • the stabilizing, mechanical contacting of the protective tube with the stop element requires a minimum temperature, so that in particular immediately in the start phase or in non-high-power operation, the overall arrangement tends to vibrations that jeopardize the reliability of the measuring arrangement.
  • the high-temperature sensor With a mounting base, the high-temperature sensor can be mounted in the exhaust system.
  • the object of the invention is to provide an advanced method for producing a protective cap for a high-temperature sensor and a high-temperature sensor with such a cap, such that the sensor element is protected even at high thermal, chemical and / or mechanical stress and can be manufactured inexpensively with low production costs ,
  • the protective cap is produced by heat input with subsequent fusion of at least one side and / or the protective cap is produced by closing the protective sleeve by means of a bottom plug, in particular by pressing and / or welding, and / or
  • the protective cap is produced by closing one side by a forming process, in particular tumbling, and / or a welding process.
  • the protective cover serves as a drawing die for the deep-drawing process, wherein in particular the protective cover is formed as a protective tube made of a high-strength material, in particular ceramic, glass ceramic and / or polymer ceramic.
  • the protective cover must have sufficient stability.
  • the method can be advantageously carried out when the protective cover is designed as a stable protective tube.
  • the protective cap is made of a workpiece made of thin sheet.
  • the deep drawing process can be carried out particularly efficiently and inexpensively.
  • the workpiece is thermally conditioned before and / or during the execution of the thermoforming process, in particular by means of a gas burner, electromagnetic radiation, laser light and / or inductive heating.
  • a thermal conditioning in particular a sufficient heating, facilitates the machining of the workpiece from which the protective cap is formed.
  • Gas burners, electromagnetic radiation, laser light and / or inductive heating allow non-contact conditioning of the workpiece.
  • a protective cap raw element is placed on the protective cover and then the protective cap raw element fused by heat input and thus attached to the protective cover.
  • the fusion of the protective cap raw element allows a particularly dense and stable attachment of the protective cap to the protective cover.
  • the heat input is effected by a gas burner, electromagnetic radiation, laser light and / or inductive heating.
  • the melting point of the cap Rohelements can be achieved particularly quickly and accurately.
  • the protective cap raw element is drawn onto the protective cover in the deep drawing process.
  • the protective cap is produced by closing the protective cover by means of a bottom plug, it is formed from metal.
  • the bottom plug is composed of a cylindrical shell element and a cover plate.
  • the forming force can be uniformly applied radially from all sides or only from certain sides. Depending on the type of deformation force applied, it can also lead to a deformation of the protective tube.
  • the deformed protective cap is then inextricably connected to the protective cover, in particular welded.
  • the protective cap is attached to the high-temperature sensor at a distance from the sensor element
  • FIG. 1a is a cross-sectional view of a first high-temperature sensor according to the invention.
  • FIG. 1b shows a second cross-sectional view of the high-temperature sensor from FIG. 1a;
  • Figure 1c is a first longitudinal view of the high temperature sensor
  • FIG. 1a
  • FIG. 1d shows a second longitudinal view of the high-temperature sensor from FIG. 1a;
  • Figure 1e is an enlarged view of a detail of Figure 1c;
  • FIG. 2 a shows a cross-sectional view of a second high-temperature sensor according to the invention
  • FIG. 2b shows a second cross-sectional view of the high-temperature sensor from FIG. 2a;
  • Figure 2c is a first longitudinal view of the high temperature sensor
  • FIG. 2d shows a second longitudinal view of the high-temperature sensor from FIG. 2a;
  • FIG. 3 a shows a cross-sectional view of a third high-temperature sensor according to the invention
  • FIG. 3b shows a second cross-sectional view of the high-temperature sensor from FIG. 3a
  • FIG. 3 c shows a first longitudinal view of the high-temperature sensor
  • FIG. 3a; FIG. 3d shows a second longitudinal view of the high-temperature sensor from FIG. 3a; Figure 3e is an enlarged view of a detail of Figure 3c;
  • FIG. 4 a shows a cross-sectional view of a fourth high-temperature sensor according to the invention;
  • FIG. 4b shows a second cross-sectional view of the high-temperature sensor from FIG. 4a;
  • FIG. 4c shows a first longitudinal view of the high-temperature sensor
  • FIG. 4a shows a second longitudinal view of the high-temperature sensor from FIG. 4a;
  • Figure 4e is an enlarged view of a portion of Figure 4c;
  • FIG. 5a is a cross-sectional view of a fifth high-temperature sensor according to the invention;
  • FIG. 5b shows a second cross-sectional view of the high-temperature sensor from FIG. 5a;
  • FIG. 5 c shows a first longitudinal view of the high-temperature sensor
  • FIG. 5d shows a second longitudinal view of the high-temperature sensor from FIG. 5a and FIG. 5d
  • FIG. 5e shows an enlarged view of a detail from FIG. 5c
  • FIGS. 1a to 1d show a first high-temperature sensor 10 according to the invention whose protective cap 11 has been produced by a deep-drawing process.
  • the high-temperature sensor 10 comprises an elongate sensor element 2 with a measuring section 3 arranged on the hot side of the high-temperature sensor 10. On the cold side there are two electrical connections 2a, 2b.
  • the sensor element 2 is embedded in a filling material 9a and also surrounded by a stable protective cover 4. However, the measuring section 3 of the sensor element 2 protrudes from the protective cover 4 on the hot side.
  • the measuring section 3 is embedded in a good thermal conductive material 9b and is covered by the protective cap 11.
  • the protective cap 11 engages in a covered portion 12 on the protective cover 4th
  • FIGS. 2a to 2e show transverse or longitudinal views of the high-temperature sensor 20, the protective cap 21 of which has been made heat input with subsequent fusion of at least one side.
  • FIGS. 3a to 3e show transverse or longitudinal views of a high-temperature sensor 30, the protective cap 31 of which has been produced by closing the protective cover by means of a bottom plug 31, in particular by pressing and / or welding.
  • the bottom plug 31 includes a hollow cylindrical portion 31b which has been pressed in a portion 32 with the protective cover 4 and then welded.
  • Embodiments here can be done only a pressing or only a welding.
  • the bottom plug 31 further includes a disk 31 a located on the hot side of the high temperature sensor 30.
  • Figures 4a to 4e show transverse and longitudinal views of a high-temperature sensor 40, the protective cap 41 has been fixed by tumbling and welding to the protective sleeve 4. The welding took place in the welding region 42.
  • FIGS. 5a to 5e show transverse and longitudinal views of a high-temperature sensor 50, the protective cap 51 of which has been pressed in a first section 51a and welded to the protective cover 4 in a second section 51b.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

L'invention concerne un procédé de production d'un capuchon protecteur pour un capteur haute température comprenant un élément détecteur, une enveloppe protectrice qui entoure au moins partiellement l'élément détecteur, et un capuchon protecteur qui est fixé à l'enveloppe protectrice; le capuchon protecteur étant fabriqué par emboutissage et/ou le capuchon protecteur étant fabriqué par application de chaleur avec fusion subséquente au moins d'un côté et/ou le capuchon protecteur étant fabriqué par fermeture de l'enveloppe protectrice à l'aide d'un bouchon obturateur, notamment par compression et/ou par soudage, et/ou le capuchon protecteur étant fabriqué par fermeture d'un côté par un procédé de façonnage, notamment par rivetage par fluage radial, et/ou un procédé de soudage.
EP13765340.8A 2012-09-17 2013-09-16 Capteur haute température et procédé de fabrication d'un capuchon protecteur pour un capteur haute température Withdrawn EP2895832A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202012103534 2012-09-17
PCT/EP2013/069153 WO2014041166A2 (fr) 2012-09-17 2013-09-16 Capteur haute température et procédé de fabrication d'un capuchon protecteur pour un capteur haute température

Publications (1)

Publication Number Publication Date
EP2895832A2 true EP2895832A2 (fr) 2015-07-22

Family

ID=49223766

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13765340.8A Withdrawn EP2895832A2 (fr) 2012-09-17 2013-09-16 Capteur haute température et procédé de fabrication d'un capuchon protecteur pour un capteur haute température

Country Status (4)

Country Link
US (1) US20150276494A1 (fr)
EP (1) EP2895832A2 (fr)
DE (1) DE102013015377A1 (fr)
WO (1) WO2014041166A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170031660A (ko) * 2014-07-14 2017-03-21 도쿄엘렉트론가부시키가이샤 온도 센서
JP6421690B2 (ja) 2014-07-17 2018-11-14 株式会社デンソー 温度センサ
DE102016221895A1 (de) * 2016-11-08 2018-05-09 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Bamberg Verfahren zur Abdichtung einer Sensorelektrode
JP7428462B2 (ja) * 2020-03-23 2024-02-06 ダイハツ工業株式会社 エンジンの高温部測定装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09250952A (ja) * 1996-01-08 1997-09-22 Matsushita Electric Ind Co Ltd 温度検出装置とそれを用いた自動車
DE10254637B4 (de) * 2002-11-22 2004-12-09 NGK Spark Plug Co., Ltd., Nagoya Temperatursensor
US7982580B2 (en) * 2008-05-30 2011-07-19 Rosemount Inc. High vibration thin film RTD sensor
DE102008060033B4 (de) * 2008-12-02 2013-08-14 Temperaturmeßtechnik Geraberg GmbH Temperaturfühler für Turbolader
DE102008060123B3 (de) 2008-12-03 2010-06-10 Continental Automotive Gmbh Hochtemperatursensor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2014041166A3 *

Also Published As

Publication number Publication date
WO2014041166A2 (fr) 2014-03-20
WO2014041166A3 (fr) 2014-07-24
DE102013015377A1 (de) 2014-03-20
US20150276494A1 (en) 2015-10-01

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