EP0056943B1 - Sonde de prise d'échantillons gazeux et de mesures thermiques dans un four à cuve - Google Patents

Sonde de prise d'échantillons gazeux et de mesures thermiques dans un four à cuve Download PDF

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Publication number
EP0056943B1
EP0056943B1 EP82100133A EP82100133A EP0056943B1 EP 0056943 B1 EP0056943 B1 EP 0056943B1 EP 82100133 A EP82100133 A EP 82100133A EP 82100133 A EP82100133 A EP 82100133A EP 0056943 B1 EP0056943 B1 EP 0056943B1
Authority
EP
European Patent Office
Prior art keywords
probe
gas
fact
block
accordance
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
Application number
EP82100133A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0056943A3 (en
EP0056943A2 (fr
Inventor
Pierre Mailliet
Victor Kremer
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.)
Paul Wurth SA
Original Assignee
Paul Wurth SA
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 Paul Wurth SA filed Critical Paul Wurth SA
Priority to AT82100133T priority Critical patent/ATE10113T1/de
Publication of EP0056943A2 publication Critical patent/EP0056943A2/fr
Publication of EP0056943A3 publication Critical patent/EP0056943A3/fr
Application granted granted Critical
Publication of EP0056943B1 publication Critical patent/EP0056943B1/fr
Expired 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 probe for taking gas samples and for thermal measurements in a shaft furnace, essentially comprising an external sheath, a series of internal gas pipes connecting gas inlet orifices distributed regularly along the sheath. to a device for receiving gaseous samples outside the oven, thermocouples placed at the level of said orifices and exposed to the gases penetrating through these orifices in the internal conduits, spacers placed transversely in the sheath for holding the conduits gas and one or more cooling circuits passing through the duct.
  • the penetration of such probes into the loading material can be facilitated by a vibrator.
  • thermocouples In order for these probes to really have the utility that is granted to them, it is absolutely essential that the measurements that they allow to be carried out are exact and reproducible. Unfortunately, this has not been the case so far, especially with regard to temperature measurements of gas samples. In fact, not only did the thermocouples generally not provide exact measurements, but also, and above all, the measurement error was variable depending on whether the measurement was made by one or the other of the thermocouples.
  • thermocouples generally come from the fact of poor fixing of the thermocouples or even from the total absence of such fixing.
  • the different thermocouples distributed along the probe do not occupy the same relative position with each other and relative to the gas inlet orifice.
  • These inaccurate positions may be the cause of mounting inaccuracies or position modifications due to thermal and mechanical deformations of the probe due to the vibrator used to drive the probe.
  • the importance of the exact or inaccurate positioning of a thermocouple is measured in the observation that a play of a few millimeters is enough to change or distort the measurements.
  • the determination of the temperature profile results from an approximation based on the measurements made at different points by the probe. It is obvious that if these measurements are inaccurate, it is not possible to establish a representative temperature curve and the probe loses much of its usefulness.
  • probes must also meet other requirements, in particular economic requirements and ease of assembly. Indeed, probes, given the environment in which they operate, must be replaced often and it is, therefore, essential that their assembly and assembly be quick and easy and that their cost is as low as possible.
  • the object of the present invention is to provide a new probe of the aforementioned type, capable of providing exact and reproducible measurements, the assembly of which is easy and rapid and the manufacturing cost of which is reasonable.
  • the probe according to the present invention is essentially characterized in that the interior end of each of the gas pipes is connected to a block of which it is integral and which is fixed to the interior wall of the sheath at level '' an opening provided therein, in that the gas inlet ports are each provided in a plate designed to be fixed through said opening, in a removable manner, on the corresponding block, in that each block and each corresponding plate are designed to define, in the assembled position, a gas inlet chamber communicating with the corresponding gas line and containing a stationary thermocouple and in that there is provided an axial cooling pipe with square section , passing through corresponding square openings in the spacers.
  • thermocouple Immobilization of the thermocouple is achieved by a flange locked in a circular groove provided partly in a block and partly in the corresponding plate and produced by assembling these two parts.
  • the block being welded itself on the external sheath, each thermocouple is thus completely immobilized in a very precise position which it will preserve in spite of deformations of the probe and of the vibrations to which it is subjected.
  • the spacers are fixed to the blocks, preferably at the rate of two spacers per block.
  • the gas intake ports are all provided on the same generator facing downwards during the measurement and taking sessions. samples.
  • the probe generally designated by the reference 10 in FIG. 1 comprises an external cylindrical metallic sheath 12 capped with a point 14 to facilitate penetration through the loading material.
  • This sheath 12 has, at regular intervals, a number of openings 16 to allow the taking of gas samples inside the oven. These samples are brought through internal pipes 18 to a receiving device outside the oven represented schematically by the reference 20.
  • the openings 16 are all located on the same side on the same generator of the sheath 12. This allows samples to be taken on the same level and eliminates a first source of errors present in probes whose sampling openings are provided all around the probe.
  • FIG. 2 shows the construction details at an opening 16.
  • a positioning block 22 receiving the end of a gas pipe 18.
  • the pipe 18 is hermetically fixed, by example by welding, to this block 22 which, in turn, is fixed, also by welding to the inner face of the sheath 12 opposite the opening 16.
  • a plate 24 is fixed, in a removable manner, for example using screws 26, 28 through the opening 16 on the block 22.
  • the plate 24 has an orifice 30 for the admission of gases, communicating with a chamber 32 formed between the plate 24 and the block 22 by opposite semi-cylindrical recesses provided respectively on the block 22 and the plate 24.
  • This chamber 32 will preferably include a refractory lining 34 provided on the block 22 and the plate 24.
  • thermocouples 36 threaded through the pipes 18 and opening into each of the chambers 32.
  • the position of the thermocouples 36 must be is well determined and fixed relative to the opening 16 and relative to the other thermocouples.
  • each thermocouple 36 is provided with a collar 38 wedged in a peripheral groove formed by semi-circular grooves 40 and 42, provided respectively on the plate 24 and the block 22.
  • thermocouple 36 cannot undergo any longitudinal displacement and is easily achievable, given that the flange 38 is simply wedged by the fixing of the plate 24 on the block 22.
  • grooves 40 and 42 must include, as shown in FIG. 3, an interruption 40a, 42a, horizontal or vertical, to allow the passage of gases from the chamber 32 in the pipe 18 connected to the block 22.
  • the probe 10 has eight gas lines 18, 18a, 18b, 18c, 18d, 18e, 18f and 18g; therefore, there are also eight sampling devices and thermocouples, as shown in Figure 2. It is obvious that depending on the diameter of the probe, the diameter of the ovens and the number of samples that l 'We want to take from a radial distance from the oven, we can provide more or less pipes 18.
  • the various gas lines 18 to 18g are held in place inside the sheath 12 by means of spacers 44 welded to the blocks 22, preferably at the rate of two spacers per block. These spacers 44 are provided at their periphery with semicircular notches 46 in which the conduits between the inner wall of the sheath 12 and the various spacers 44 are maintained.
  • the different lines 18 to 18g must, in order to be able to communicate with the openings 16 provided on the same generator of the sheath 12, be arranged helically inside the sheath 12, undergoing between two successive openings 16, a rotation of an angle corresponding to the angle of separation of two adjacent notches 46 of the spacers 44.
  • the probe proposed by the invention is provided with a cooling circuit.
  • an axial pipe 48 is provided passing through the various spacers 44 and through which the cooling water is injected. This cooling water returns from the outside, that is to say through the free space between the various pipes 18 to 18g and the outer sheath 12.
  • the pipe 48 has a square section, as do the openings in the spacers 44 for the passage of this pipe 48. This allows, of course, better maintenance of the spacers 44 and lines 18a to 18g, in particular by preventing relative rotation of these elements with one another. It is understood that the section of the pipe 48 may have other shapes than that illustrated, in particular triangular, oval, etc., provided that it is not round.
  • the openings of the spacers must be slightly larger than the section of the pipe. Therefore, to avoid floating, or an oblique orientation of the spacers 44 and blocks 22 relative to the pipe 44 during assembly, it is preferable to provide two spacers 44 per block 22.
  • this support by the axial pipe 48 is especially remarkable during the mounting of the probe 10.
  • this pipe 48 serves to support the spacers 44 and the gas pipes, the whole interior can be assembled of the probe around this pipe 48 by sliding the different spacers 44 and blocks 22 previously welded together on this pipe 48, by placing the different pipes 18 to 18g and by welding them successively to the corresponding block 22. After that, it is enough to slide the outer sheath 12 on the assembly thus produced and to complete the mounting of the probe by welding the blocks 22 to the sheath 12 and by screwing the plates 24 onto the corresponding blocks 22.

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)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Blast Furnaces (AREA)
EP82100133A 1981-01-23 1982-01-11 Sonde de prise d'échantillons gazeux et de mesures thermiques dans un four à cuve Expired EP0056943B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82100133T ATE10113T1 (de) 1981-01-23 1982-01-11 Sonde zur gasprobenentnahme und temperaturmessung bei einem schachtofen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU83087 1981-01-23
LU83087A LU83087A1 (fr) 1981-01-23 1981-01-23 Sonde de prise d'echantillons gazeux et de mesures thermiques dans un four a cuve

Publications (3)

Publication Number Publication Date
EP0056943A2 EP0056943A2 (fr) 1982-08-04
EP0056943A3 EP0056943A3 (en) 1982-08-18
EP0056943B1 true EP0056943B1 (fr) 1984-10-31

Family

ID=19729570

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82100133A Expired EP0056943B1 (fr) 1981-01-23 1982-01-11 Sonde de prise d'échantillons gazeux et de mesures thermiques dans un four à cuve

Country Status (11)

Country Link
US (1) US4403516A (xx)
EP (1) EP0056943B1 (xx)
JP (2) JPS57143410A (xx)
AT (1) ATE10113T1 (xx)
AU (1) AU551025B2 (xx)
BR (1) BR8200395A (xx)
CA (1) CA1168897A (xx)
DE (1) DE3261083D1 (xx)
ES (1) ES8301355A1 (xx)
LU (1) LU83087A1 (xx)
ZA (1) ZA82224B (xx)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU84992A1 (fr) * 1983-09-07 1985-06-04 Wurth Paul Sa Dispositif pour la determination du profil de la surface de chargement d'un four a cuve
JPS6156215A (ja) * 1984-08-27 1986-03-20 Kawasou Denki Kogyo Kk 高炉等シヤフト炉用の計測プロ−ブ
US4630939A (en) * 1985-11-15 1986-12-23 The Dow Chemical Company Temperature measuring apparatus
US5226729A (en) * 1992-10-07 1993-07-13 Lennox Industries Inc. Averaging temperature probe
FR2805044B1 (fr) * 2000-02-11 2002-05-17 Franco Belge Combustibles Procede et dispositif de determination de l'evolution d'une reaction chimique dans un four et de reglage de la reaction
US20040114665A1 (en) * 2002-12-12 2004-06-17 Sun Park Cantilevered thermocouple rake
DE102006019723B4 (de) * 2006-03-31 2014-12-24 Alstom Technology Ltd. Messsondensystem, Anordnung und Verfahren zur Erfassung von Abgasparametern stromabwärts einer Gasturbine
WO2008143962A1 (en) * 2007-05-18 2008-11-27 Enviormental Energy Services, Inc. Method for measuring ash/slag deposition in a utility boiler
CN103114165A (zh) * 2013-03-14 2013-05-22 济钢集团有限公司 一种高炉煤气取样测温装置
CN103602770B (zh) * 2013-12-05 2015-05-13 江苏联兴成套设备制造有限公司 可在线更换的带预警功能的十字测温装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE718766C (de) * 1939-01-07 1942-03-20 Bochumer Ver Fuer Gussstahlfab Vorrichtung zur Ermittlung der Gasstroemung in Hochoefen o. dgl. Schachtoefen
US3085435A (en) * 1960-03-15 1963-04-16 United States Steel Corp Method and apparatus for determining conditions at spaced points within a chamber
US3130584A (en) * 1961-02-14 1964-04-28 United States Steel Corp Blast furnace probe
US3240069A (en) * 1963-09-04 1966-03-15 United States Steel Corp Blast furnace probe
US3637438A (en) * 1965-05-13 1972-01-25 Redwood L Springfield Thermocouple guide
LU65998A1 (xx) * 1972-09-05 1973-01-17
US4044612A (en) * 1977-01-14 1977-08-30 Koppers Company, Inc. Probe for obtaining gas samples from a shaft furnace

Also Published As

Publication number Publication date
BR8200395A (pt) 1982-11-23
EP0056943A3 (en) 1982-08-18
CA1168897A (en) 1984-06-12
AU551025B2 (en) 1986-04-17
JPS57143410A (en) 1982-09-04
ES508962A0 (es) 1982-12-16
ZA82224B (en) 1982-11-24
JPH02140957U (xx) 1990-11-26
ATE10113T1 (de) 1984-11-15
US4403516A (en) 1983-09-13
DE3261083D1 (en) 1984-12-06
AU7952382A (en) 1982-07-29
LU83087A1 (fr) 1982-09-10
EP0056943A2 (fr) 1982-08-04
ES8301355A1 (es) 1982-12-16

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