EP0254659A1 - Verschlusskappe für Sonde, Verfahren und Vorrichtung zur Probenentnahme bei Schmelzöfen mit einer solchen Sonde - Google Patents

Verschlusskappe für Sonde, Verfahren und Vorrichtung zur Probenentnahme bei Schmelzöfen mit einer solchen Sonde Download PDF

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Publication number
EP0254659A1
EP0254659A1 EP87470010A EP87470010A EP0254659A1 EP 0254659 A1 EP0254659 A1 EP 0254659A1 EP 87470010 A EP87470010 A EP 87470010A EP 87470010 A EP87470010 A EP 87470010A EP 0254659 A1 EP0254659 A1 EP 0254659A1
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EP
European Patent Office
Prior art keywords
probe
plug
nose
gas
face
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.)
Granted
Application number
EP87470010A
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English (en)
French (fr)
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EP0254659B1 (de
Inventor
Jean-Claude Daverio
Dominique Rocchi
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.)
Institut de Recherches de la Siderurgie Francaise IRSID
Original Assignee
Institut de Recherches de la Siderurgie Francaise IRSID
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.)
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Application filed by Institut de Recherches de la Siderurgie Francaise IRSID filed Critical Institut de Recherches de la Siderurgie Francaise IRSID
Priority to AT87470010T priority Critical patent/ATE56048T1/de
Publication of EP0254659A1 publication Critical patent/EP0254659A1/de
Application granted granted Critical
Publication of EP0254659B1 publication Critical patent/EP0254659B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/24—Test rods or other checking devices

Definitions

  • the present invention relates to a plug for a probe nose implantable in a melting furnace, more particularly a reduction-reduction furnace such as a blast furnace, in particular a steel blast furnace, as well as a method and associated device for probing in this furnace. using a probe fitted with such a plug.
  • probes used to carry out measurements, analyzes or samples in blast furnaces are generally tubular, at the very least at their end having a tubular part, so that they can either receive the measurement means or take the desired samples.
  • these probes can advantageously be permanently closed at their end, and has only an orifice sufficient for the passage of gases.
  • This orifice is preferably located on the side wall near the end of the nose of the probe. This arrangement reduces the risk of inadvertent destruction of this orifice by solid or liquid materials when the probe is introduced into the oven.
  • the gas pressure, inside the metallurgical furnace into which the probe is introduced is not necessarily well known, especially since it can vary, for example during the time of introduction of the probe, the plug risks being extracted under the action of too great a difference between the gas pressure in the probe and the pressure prevailing in the oven.
  • One of the aims of the present invention is to solve the above problems in a simple, safe and economical manner.
  • Another object of the invention is to be able to regulate the pressure of protective gas as a function of the pressure conditions, which are variable and not known with precision, encountered inside the furnace.
  • Another object of the invention is to provide a device allowing, safely for the apparatus it contains, the introduction of a probe into a melting furnace, such as a blast furnace, avoiding the inappropriate extraction of the probe nose cap.
  • a plug for a probe nose which can be installed in a melting furnace such as a blast furnace, intended to temporarily close the tubular end of said probe, consisting of two contiguous parts: a body, of substantially cylindrical shape in order to be able to be forced into the probe nose and to have a front end face inside the probe, and a head intended to cover the probe nose externally by presenting a free face facing the furnace as well as an abutment shoulder on the tubular end of the probe, plug characterized in that it has an internal conduit passing right through it and bringing the free face of the head into communication with the face frontal of the body, and in that the body comprises, on its side wall, means for ensuring a seal between it and the probe.
  • Another object of the invention is a method for implanting a tubular probe in an oven such as a blast furnace, according to which the nose of the probe is closed by the pierced plug defined above, fitted in the probe nose, a gas under pressure is injected into the probe and the probe is introduced into the oven; the supply rate of injected gas is continuously monitored, until the plug is expelled (this flow being due to the exhaust of said gas through the internal pipe of the plug), and the pressure is adjusted supply of the protective gas so as to maintain this flow rate between a minimum value below which the gas from the oven may penetrate in the probe, and a maximum value beyond which the plug may be expelled prematurely.
  • the invention it is possible to introduce into a furnace a tubular probe provided at its end with a plug, and inside of which a protective gas is injected, without risking an untimely ejection of the plug.
  • the invention makes it possible to avoid expulsion of the plug and the subsequent deterioration of the apparatuses due to their over-exposure to thermal radiation or to harmful gases coming from the furnace.
  • Another advantage of the invention is to present a plug whose additional cost, compared to the solid plugs according to the prior art, is minimal since a drilling operation may be sufficient to produce the desired transverse conduit. This advantage is particularly decisive because these plugs are "consumable" elements, which must be renewed each time the probe is introduced into the oven.
  • the conduit opens at the surface of the head out of the axial end thereof, and in a direction inclined relative to the axis of the plug.
  • This arrangement is particularly advantageous: on the one hand, it greatly reduces the risk of obstruction of the orifice by solid or liquid materials with which the plug is likely to come into contact when the probe is introduced into the oven .
  • the inclined direction of the through part of the conduit no radiation can directly reach the interior of the probe and in particular the apparatus which may be there.
  • the means necessary for the implementation of the method according to the invention consist of apparatus for controlling the flow and regulating the pressure of a gas which are common measurement devices available commercially and for use. easy.
  • the probe which will be described is a cooled probe, more particularly intended for use in a steel blast furnace, and in particular for probing operations by the nozzles of the H.F.
  • Such a probe 1 generally consists of a hollow metallic tubular casing 2.
  • This casing has an interior wall 21 and an exterior wall 22, both cylindrical and coaxial. These two walls are connected to each other, at the end of the probe, to form the probe nose 3.
  • a partition 23 is arranged between the outer 22 and inner 21 walls and coaxially with them so to divide the space between the walls 21 and 22 into two concentric annular chambers 24 and 25.
  • the end of the partition 23, on the side of the nose 3, is not connected to the latter so as to provide this location communication between the two rooms. Spacers not shown keep said partition 23 in a centered position relative to the outer 22 and inner walls 21. This arrangement allows forced circulation of a cooling fluid of the probe (generally water) in the chambers 24 and 25, following the arrows in figure 1.
  • a cooling fluid of the probe generally water
  • the probe nose has a countersink 31, machined so as to have a flat abutment surface for the plug 4.
  • the latter made in one piece, has two contiguous parts: a cylindrical body 41 of diameter substantially equal to the diameter inside of the envelope 2 of the probe and a head 42, of generally conical shape so as to offer in contact with the interior of the oven a face 52 which facilitates the penetration of the probe into the oven.
  • the diameter of the head is greater than that of the body, thus forming a shoulder 46 which abuts on the counterbore 31 of the probe nose, when the plug is fitted at the end of the latter.
  • the base of the cone forms a cylindrical portion 43 of small height corresponding to the depth of the counterbore 31 produced on the probe nose.
  • the diameter of the cylindrical portion 43 of the cap head (and therefore the maximum outside diameter of said cap) is less than the outside diameter of the tubular casing 2 of the probe, and therefore of the probe nose 3. Said diameter of the head of the plug is only very slightly less than the diameter of the countersink 31 of the probe nose. This feature ensures continuity between the apparent surface 52 of the cap and that of the nose, which facilitates the penetration of the probe when it is brought through an area of solid materials, by improving the sliding of these materials on the surface. end of the probe.
  • the body 41 of the plug has on its side wall 53 one or more circular grooves 44. (In Figure 1 two of these grooves are shown). These grooves receive seals or packings 45 made of a material having sufficient resistance to the high temperatures to which the plug is exposed despite the cooling of the probe. In particular, these seals 45 can be made of asbestos.
  • the plug is itself made of refractory material, for example asbestolite®.
  • the seals 45 also participate by their elasticity in maintaining the plug in the probe nose.
  • the plug is traversed right through by a conduit 47 of small diameter, for example 1 or 2 millimeters, opening onto the conical face 52 of the head, preferably, for the reasons already mentioned, in a direction inclined relative to the axis of the plug, and substantially towards the middle of a generator of this conical part through an orifice 50.
  • the other end of the internal conduit 47 opens onto the free front face 48 of the body 41 facing the inside of the probe, through an orifice 51 advantageously located in a groove 49 hollowed out transversely in this face along a diameter.
  • the plug should be particularly well studied. Its shape should facilitate penetration of the probe. It must effectively seal the probe for the duration of the introduction thereof, until its ejection by appropriate means.
  • the force exerted on the plug results from the difference between the pressure inside the oven and that of the gas injected into the probe, in accordance with the invention, and thanks to which one can appreciate this pressure difference and adjust the supply of shielding gas accordingly.
  • the introduction of the probe is carried out as described below.
  • the probe 1 is provided with a pierced plug 4 in accordance with the invention and with the internal apparatuses required to perform the metrology or sample collection operations desired.
  • a pressurized gas preferably a neutral gas and advantageously nitrogen, is introduced into the probe in the vicinity of its end 5 opposite the nose 3, through a flow controller 6 and a pressure regulator 7 .
  • the probe is introduced by the nozzle into the blast furnace, through sealing means of known type, so that the pressurized gas of the H.F. cannot inadvertently escape to the atmosphere.
  • the plug As soon as the probe nose is in contact with the internal gas of the blast furnace, the plug is subjected, on the one hand to the pressure of this gas which tends to keep it in abutment on the probe, and on the other hand, to the nitrogen pressure which tends to eject it.
  • the plug being force fitted into the probe nose, resists a certain differential pressure tending to drive it out.
  • the invention is based on the fact that it suffices to maintain a minimum flow of nitrogen through the conduit 47 of the plug 4. This flow is controlled by the flow controller 6. If the flow increases, this means that the blast furnace pressure decreases, and as a result the nitrogen pressure will be reduced to maintain equilibrium. Conversely, if the flow rate decreases, it means that the pressure of the blast furnace increases and the nitrogen pressure will likewise be increased.
  • a range of flow rate value is determined, determined by a maximum beyond which the plug risks being expelled, and a minimum below which the gas from the blast furnace risks entering the probe.
  • This minimum is not zero in order to prevent uncontrolled nitrogen leaks, and especially because in the event of an increase in pressure in the oven, the nitrogen contained in the probe would compress and allow it to penetrate through the duct 47 for blast furnace gas.
  • the maximum flow rate corresponds to a maximum allowable pressure difference between the inside of the probe and the oven for holding the plug on the probe nose, it is possible to use the device described above to expel the plug at the end of penetration, by a voluntary increase in pressure, beyond the limits provided previously for the operation being introduced.
  • the nitrogen pressure regulator 7 can be controlled by the flow controller 6, by means of a control device 8 which will automatically adjust the pressure as a function of the flow.
  • the invention advantageously applies to all the probes carried out by means of a tubular probe in a metallurgical furnace containing gases under pressure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Blast Furnaces (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Investigating And Analyzing Materials By Characteristic Methods (AREA)
  • Materials For Medical Uses (AREA)
  • Measuring Fluid Pressure (AREA)
  • Adornments (AREA)
  • Measuring Leads Or Probes (AREA)
  • Electric Ovens (AREA)
EP87470010A 1986-06-30 1987-06-09 Verschlusskappe für Sonde, Verfahren und Vorrichtung zur Probenentnahme bei Schmelzöfen mit einer solchen Sonde Expired - Lifetime EP0254659B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87470010T ATE56048T1 (de) 1986-06-30 1987-06-09 Verschlusskappe fuer sonde, verfahren und vorrichtung zur probenentnahme bei schmelzoefen mit einer solchen sonde.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8609809A FR2600771B1 (fr) 1986-06-30 1986-06-30 Bouchon pour nez de sonde, procede de sondage dans un four de fusion utilisant une sonde munie d'un tel bouchon et dispositif de mise en oeuvre
FR8609809 1986-06-30

Publications (2)

Publication Number Publication Date
EP0254659A1 true EP0254659A1 (de) 1988-01-27
EP0254659B1 EP0254659B1 (de) 1990-08-29

Family

ID=9337122

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87470010A Expired - Lifetime EP0254659B1 (de) 1986-06-30 1987-06-09 Verschlusskappe für Sonde, Verfahren und Vorrichtung zur Probenentnahme bei Schmelzöfen mit einer solchen Sonde

Country Status (11)

Country Link
US (2) US4829836A (de)
EP (1) EP0254659B1 (de)
JP (1) JPS6326304A (de)
KR (1) KR880000600A (de)
AT (1) ATE56048T1 (de)
AU (1) AU599389B2 (de)
BR (1) BR8703287A (de)
CA (1) CA1286522C (de)
DE (1) DE3764570D1 (de)
ES (1) ES2017525B3 (de)
FR (1) FR2600771B1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2600771B1 (fr) * 1986-06-30 1988-09-09 Siderurgie Fse Inst Rech Bouchon pour nez de sonde, procede de sondage dans un four de fusion utilisant une sonde munie d'un tel bouchon et dispositif de mise en oeuvre
JP2816159B2 (ja) * 1988-10-04 1998-10-27 株式会社日立製作所 情報処理装置
US5076103A (en) * 1990-08-31 1991-12-31 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Water cooled static pressure probe
JP2009156705A (ja) * 2007-12-26 2009-07-16 Toyota Motor Corp 車載レーダ装置の被覆構造
JP6357170B2 (ja) 2012-12-21 2018-07-11 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． ストリームプローブを用いた歯垢検出
CN115200774B (zh) * 2022-07-22 2023-12-01 北京超测智能系统有限公司 一种矿热炉内气体压力的测量或调节方法及系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1533829B1 (de) * 1967-02-06 1971-08-05 Dango & Dienenthal Kg Sonde zur gas und moellerprobenentnahme und oder temperatur sowie gasdruckmessung bei schachtoefen insbesondere hoch oefen
FR2472018A1 (fr) * 1979-12-21 1981-06-26 Nippon Steel Corp Sonde pour haut fourneau

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU681097A1 (ru) * 1977-12-27 1979-08-25 Всесоюзный Научно-Исследовательский Институт Автоматизации Черной Металлургии Устройство дл отбора проб газа
JPS5690908A (en) * 1979-12-21 1981-07-23 Nippon Steel Corp Sonde device for blast furnace
SU933716A2 (ru) * 1980-06-09 1982-06-07 Всесоюзный Научно-Исследовательский Институт Автоматизации Черной Металлургии Устройство дл отбора проб газа в доменной печи
DE3243098A1 (de) * 1982-11-22 1984-05-24 Rheinische Braunkohlenwerke AG, 5000 Köln In einen reaktionsbehaelter hineingefuehrtes sondenrohr zur ermittlung des betriebszustandes eines mediums
US4495810A (en) * 1983-04-20 1985-01-29 General Electric Company Probe mounting system
DE3471522D1 (en) * 1984-12-12 1988-06-30 Kempe Eberhard Probe for sampling volatile components in liquids or gases
FR2600771B1 (fr) * 1986-06-30 1988-09-09 Siderurgie Fse Inst Rech Bouchon pour nez de sonde, procede de sondage dans un four de fusion utilisant une sonde munie d'un tel bouchon et dispositif de mise en oeuvre
US4788871A (en) * 1986-08-14 1988-12-06 Steeltin Can Corporation Probe for sensing temperature and/or pressure
US4742717A (en) * 1986-09-16 1988-05-10 Kaijo Denki Co., Ltd. Gas flow rate measuring device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1533829B1 (de) * 1967-02-06 1971-08-05 Dango & Dienenthal Kg Sonde zur gas und moellerprobenentnahme und oder temperatur sowie gasdruckmessung bei schachtoefen insbesondere hoch oefen
FR2472018A1 (fr) * 1979-12-21 1981-06-26 Nippon Steel Corp Sonde pour haut fourneau

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED, semaine 8433, 26 septembre 1984, Derwent Publications, Ltd; & SU-A-1 062 267 (KULAKOV P.A.) 23-12-1983 *
SOVIET INVENTIONS ILLUSTRATED, semaine C16, 28 mai 1980, Derwent Publications Ltd; & SU-A-681 097 (FERR METALLURGY AUTOMN) 25-08-1979 *
SOVIET INVENTIONS ILLUSTRATED, semaine K15, 25 mai 1983, Derwent Publications Ltd; & SU-A-933 716 (FERR METALLURGY AUTOMN) 09-06-1982 *

Also Published As

Publication number Publication date
FR2600771A1 (fr) 1987-12-31
US4890503A (en) 1990-01-02
ES2017525B3 (es) 1991-02-16
ATE56048T1 (de) 1990-09-15
KR880000600A (ko) 1988-03-28
CA1286522C (fr) 1991-07-23
BR8703287A (pt) 1988-03-15
FR2600771B1 (fr) 1988-09-09
AU7478487A (en) 1988-01-07
US4829836A (en) 1989-05-16
AU599389B2 (en) 1990-07-19
DE3764570D1 (de) 1990-10-04
EP0254659B1 (de) 1990-08-29
JPS6326304A (ja) 1988-02-03

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