EP0342731B1 - Sprühelektrode für elektrostatische Staubabscheider - Google Patents

Sprühelektrode für elektrostatische Staubabscheider Download PDF

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Publication number
EP0342731B1
EP0342731B1 EP89201128A EP89201128A EP0342731B1 EP 0342731 B1 EP0342731 B1 EP 0342731B1 EP 89201128 A EP89201128 A EP 89201128A EP 89201128 A EP89201128 A EP 89201128A EP 0342731 B1 EP0342731 B1 EP 0342731B1
Authority
EP
European Patent Office
Prior art keywords
spray
corona discharge
electrodes
electrode
clamping frame
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 - Lifetime
Application number
EP89201128A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0342731A1 (de
Inventor
Rainer Reuffurth
Hermann Koy
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.)
GEA Group AG
Original Assignee
Metallgesellschaft AG
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 Metallgesellschaft AG filed Critical Metallgesellschaft AG
Priority to AT89201128T priority Critical patent/ATE83688T1/de
Publication of EP0342731A1 publication Critical patent/EP0342731A1/de
Application granted granted Critical
Publication of EP0342731B1 publication Critical patent/EP0342731B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/86—Electrode-carrying means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/41—Ionising-electrodes

Definitions

  • the invention relates to a spray electrode, consisting of an elongated band-shaped or wire-shaped body with protruding spray tips, for use in electrostatic dust separators in which vertical precipitation electrode walls forming gas passages alternatingly with respect to the gas flow direction and clamping frames composed of pipes are arranged, and in which a plurality of spray electrodes are inserted with their upper and lower ends in bores of the horizontal tubes of the stenter and welded to them.
  • Examples of such spray electrodes have become known from German patents 25 46 305 and 26 03 514 in connection with clamping devices specially developed for this purpose. They essentially consist of a narrow sheet metal strip with protrusions formed integrally thereon and with so-called welding ends. The latter are designed as sections of a round wire, which are inserted into the bores of the stenter frame tubes and fastened to them for fastening the spray electrodes.
  • spray electrodes have become known in which the spray tips consist of separate parts, for example tapered wire sections, which are connected in a voltage-conducting manner to the elongated band-shaped or wire-shaped spray electrode body.
  • a weak point that is observed again and again is the weld connection between the actual spray electrode and the weld ends. If spray electrodes break under the combined stress of clamping forces, vibrations for cleaning, temperature, electrical voltage and corrosion, it is in this transition area, which must also not have any significant electrical contact resistance.
  • DE-A-1 557 101 describes a fastening means for individually suspended spray wires in an electrostatic dust ash separator, in which the spray wire is fixedly connected in the area of the carrying beam to a sheet metal sleeve by clamping or welding, which is fixed to the carrying beam.
  • a tubular sheet metal sleeve is pushed over the spray wire, the inside diameter of which is larger than the diameter of the spray wire.
  • the sleeve is clamped with special pliers and deformed onto the spray wire.
  • the sheet metal sleeve protrudes from the top of the support bar and is welded to it.
  • the ends of the spray electrodes are semicircular in cross section.
  • the elongate body of the spray electrode has a semicircular cross section throughout.
  • the object on which the invention is based is achieved in that at least the ends of the spray electrodes are semicircular in cross section, penetrate fully through the stenter and are welded to the stenter, the opposite ends of the spray electrodes lying flat against one another and together filling a circular hole in the stenter.
  • the elongate body of the spray electrode has a semicircular cross section throughout.
  • the latter can also be designed continuously with a semicircular cross section and provided with spray tips. Compared to common, band-shaped spray electrode dimensions, this means a slightly higher material expenditure, which is more than compensated for by the expected longer service life.
  • FIGS. 1 to 3 Further details on the prior art and the advantages of the inventive concept are explained in more detail with reference to the exemplary embodiments shown in FIGS. 1 to 3.
  • Figure 1 shows a connection of the spray electrode / clamping frame according to the prior art.
  • Figure 2 shows a connection between the spray electrode / clamping frame according to the invention.
  • FIG. 3 shows an alternative to FIG. 2.
  • the spray electrodes consist of an elongated band-shaped body (1) on which spray tips (2) are fastened by means of welding spots (3).
  • the spray electrodes have ends Welding ends (4) in the form of sections made of round material, to which the spray electrode ends (5) are adapted and to which they are attached by means of a welding spot (6).
  • the spray electrodes are fixed in the clamping frame (7) by means of a weld seam (8).
  • a plurality of spray electrode sections arranged one above the other should lie in the same “electrical center” so that the best separation performance can be achieved. This can - as shown - only be realized if the weld ends are in the same hole in the stenter. However, they can then only be inserted up to approximately the center of the tube and only welded to the stenter at one point. This type of connection between the spray electrode and the clamping frame has proven to be very susceptible to faults.
  • the welding ends (4) are therefore semicircular in cross-section as shown in FIG. 2, in which the reference numerals have the same meaning as in FIG. 1. Will or must the same cross-sectional area be realized for these welding ends as for the cross-sections circular welding ends according to the prior art, then you have to provide a 40% larger bore diameter in the stenter, which is possible without difficulty.
  • the inventive design of the welding ends with a semicircular cross section allows a stable two-point attachment in the tubes of the stenter without the spray tips lying appreciably outside the electrical center.
  • FIG. 3 A further development of the inventive concept is shown in FIG. 3.
  • the body (9) of the spray electrode is made entirely of material with a semicircular cross section. All other designations have the same meaning as in FIGS. 1 and 2.
  • this embodiment requires a somewhat greater amount of material than the strip-shaped spray electrode body, it is somewhat more stable and the welding spots (6) can be omitted.
  • the spray electrode tips are even better arranged in the electrical center.

Landscapes

  • Electrostatic Separation (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
EP89201128A 1988-05-17 1989-05-02 Sprühelektrode für elektrostatische Staubabscheider Expired - Lifetime EP0342731B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89201128T ATE83688T1 (de) 1988-05-17 1989-05-02 Spruehelektrode fuer elektrostatische staubabscheider.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3816717A DE3816717A1 (de) 1988-05-17 1988-05-17 Spruehelektrode fuer elektrostatische staubabscheider
DE3816717 1988-05-17

Publications (2)

Publication Number Publication Date
EP0342731A1 EP0342731A1 (de) 1989-11-23
EP0342731B1 true EP0342731B1 (de) 1992-12-23

Family

ID=6354511

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89201128A Expired - Lifetime EP0342731B1 (de) 1988-05-17 1989-05-02 Sprühelektrode für elektrostatische Staubabscheider

Country Status (9)

Country Link
US (1) US4948399A (es)
EP (1) EP0342731B1 (es)
JP (1) JPH0217955A (es)
AT (1) ATE83688T1 (es)
AU (1) AU610802B2 (es)
CA (1) CA1330104C (es)
DE (2) DE3816717A1 (es)
ES (1) ES2037391T3 (es)
ZA (1) ZA893687B (es)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60115724T2 (de) * 2001-10-23 2006-07-06 Geecom (Pty) Ltd. Sprühelektrode
AU2004244900B2 (en) * 2003-06-05 2007-04-05 Daikin Industries, Ltd. Discharge apparatus and air purifying apparatus
US8092576B2 (en) * 2005-02-18 2012-01-10 Turbosonic Inc. Mast electrode design
US7399340B2 (en) * 2005-06-08 2008-07-15 Hamon Research—Cottrell, Inc. Replacement discharge electrode for electrostatic precipitators and method of assembly
US7438743B2 (en) * 2006-02-23 2008-10-21 Hamon Research -Cottrell, Inc. Method of making replacement collecting electrodes for an electrostatic precipitator
US7468094B2 (en) * 2006-02-23 2008-12-23 Hamon Research—Cottrell Inc. Method of repairing an electrostatic precipitator
EP2471602B1 (en) * 2010-12-29 2013-11-27 Alstom Technology Ltd Electrical screening device for structures near high voltage parts of electrostatic precipitators
EP2691181A4 (en) 2011-03-28 2014-12-03 Megtec Turbosonic Inc WESP PRECIPITATED ELECTRODE FROM AN EROSIS-RESISTANT CONDUCTIVE COMPOSITE MATERIAL
US11027289B2 (en) 2011-12-09 2021-06-08 Durr Systems Inc. Wet electrostatic precipitator system components
CN103990545B (zh) * 2014-05-31 2017-04-12 安徽恒意环保科技股份有限公司 极线可膨胀固定装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE299476C (es) *
US925293A (en) * 1906-11-30 1909-06-15 Allis Chalmers Cable-connector.
US1391364A (en) * 1920-09-20 1921-09-20 Carl V Bulow Joint
DE1557111A1 (de) * 1967-07-31 1970-03-12 Kloeckner Humboldt Deutz Ag Spruehdrahtbefestigung
DE2546305C3 (de) * 1975-10-16 1981-04-16 Metallgesellschaft Ag, 6000 Frankfurt Spannvorrichtung für Sprühelektroden
DE2603514C2 (de) * 1976-01-30 1984-06-07 Metallgesellschaft Ag, 6000 Frankfurt Verfahren und Vorrichtung zum Spannen von Sprühelektroden
DE2904339A1 (de) * 1979-02-06 1980-08-14 Metallgesellschaft Ag Mehrfeldriger elektrofilter
DE3130548A1 (de) * 1981-08-01 1983-02-17 Metallgesellschaft Ag, 6000 Frankfurt Verfahren zur befestigung von bandfoermigen spruehelektroden
DE3138601A1 (de) * 1981-08-01 1983-04-14 Metallgesellschaft Ag, 6000 Frankfurt Verfahren zur befetigung von bandfoermigen spruehelektroden
DE3712726A1 (de) * 1987-04-15 1988-11-10 Metallgesellschaft Ag Spruehelektrode

Also Published As

Publication number Publication date
ES2037391T3 (es) 1993-06-16
AU610802B2 (en) 1991-05-23
US4948399A (en) 1990-08-14
EP0342731A1 (de) 1989-11-23
ATE83688T1 (de) 1993-01-15
CA1330104C (en) 1994-06-07
DE58903079D1 (de) 1993-02-04
ZA893687B (en) 1991-01-30
DE3816717A1 (de) 1989-11-30
JPH0217955A (ja) 1990-01-22
AU3478389A (en) 1989-11-23

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