CH224043A - Isolator on electrical dust extractors. - Google Patents
Isolator on electrical dust extractors.Info
- Publication number
- CH224043A CH224043A CH224043DA CH224043A CH 224043 A CH224043 A CH 224043A CH 224043D A CH224043D A CH 224043DA CH 224043 A CH224043 A CH 224043A
- Authority
- CH
- Switzerland
- Prior art keywords
- insulator
- isolator
- electrical dust
- slot
- dust
- Prior art date
Links
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
- B03C3/66—Applications of electricity supply techniques
- B03C3/70—Applications of electricity supply techniques insulating in electric separators
Landscapes
- Insulators (AREA)
Description
Isolator an elektrischen Entstaubungsapparaten. An Entstaubungsapparaten beschlägt :sich die im Enstaubungsraum des Apparates be findliche Oberfläche der Isolatoren sehr nasch mit Staub. Scheidet sich ausserdem auf den Isolatoren nocb. Kondenswasser aus, so haftet der Staub auch auf der Unterseite der Schirme. Bei leitendem Staub (Gussstaub, Zement -j-- Kondenswasser) und leitenden Flüssigkeiten bildet diese Schicht einen elek trischen Kurzschluss und die Anlage arbeitet nicht mehr.
Erst nach einer gründlichen Rei nigung der Isolatoren kann sie wieder in Be trieb genommen werden. Zur Bekämpfung dieser Erscheinung werden Isolatoren mit grossem Kriechweg ,gebaut oder die Isolatoren ständig aufgeheizt.
Die vorliegende Erfindung betrifft eine Konstruktion, die die Bildung einer zu sammenhängenden leitenden Schicht ver- unmöglicht. Zu diesem Zweck wird eine ringförmige Stelle der Isolatoroberfläche als ausspülbarer :Schlitz ausgebildet, durch welchen z. B. ein reiner Luftstrom oder ein gereinigtes Gas rings um den Isolator ge- blasen werden kann. Dieser Schlitz kann leicht so bemessen werden, dass die Betriebs spannung ihn nicht überschlagen kann. Der Spülmittelstrom, z.
B. der Luftstrom, hält die Staubteilchen an dieser Stelle vom Iso lator fern und verhindert die Bildung einer zusammenhängenden leitenden Schicht.
Die Fig. 1 bis 4 der beigeordneten Zeich nung zeigen verschiedene beispielsweise A us- führungsformen dieser Konstruktion.
Fig. 1 zeigt einen Stützer aus Isolier stoff mit zentralem Zuführungskanal B1 für saubere Luft L, welche durch radiale Boh rungen B2 in den ringförmigen ,Schlitz S strömt.
Fig. 2 zeigt eine Durchführung aus Iso lierstoff. Die Luft wird durch einen Rohr ansatz B in den Flanschring und von dort durch Bohrungen B1 in den Innenraum ge führt. Durch radiale Bohrungen B2 gelangt sie in den Spülschlitz S.
Fig. 3 veranschaulicht einen Stützer mit einem stabförmigen Isolator und übergescho benen Blechhülsen zur Abschirmung der Iso- latorenoberfläche und Führung der Spülluft. Das Spülgas gelangt durch den Flan@schring F und Bohrungen<I>B</I> zwischen den Isolator <I>I</I> und die Hülse H und strömt von dort durch den Luftspalt S aus.
Fig. 4 zeigt. eine Durchführung aus Iso lierstoff mit Abschirmung aus Blech. Das Spülgas gelangt vom Flanschring F durch Bohrungen B in den Spülschlitz S.
In dem Falle, da ein besonderes Gas ent staubt werden muss, bei dem eine Bei- mischung von Luft nicht zulässig ist, kann als Spülgas vom Entstaubungsapparat ge- reinigtes Gas benutzt werden.
Isolator on electrical dust extractors. On dust collectors, the surface of the insulators in the dust collector's compartment becomes very nasty with dust. Also separates on the isolators nocb. Condensation, the dust also adheres to the underside of the screens. In the case of conductive dust (casting dust, cement -j-- condensation) and conductive liquids, this layer forms an electrical short circuit and the system no longer works.
It can only be put back into operation after the isolators have been thoroughly cleaned. To combat this phenomenon, insulators with a large creepage distance are built or the insulators are constantly heated.
The present invention relates to a construction which makes it impossible to form a continuous conductive layer. For this purpose, an annular point on the insulator surface is designed as a flushable slot through which z. B. a pure air stream or a purified gas can be blown around the insulator. This slot can easily be dimensioned so that the operating voltage cannot overturn it. The detergent stream, e.g.
B. the air flow, keeps the dust particles away from the Iso lator and prevents the formation of a cohesive conductive layer.
1 to 4 of the accompanying drawing show various exemplary embodiments of this construction.
Fig. 1 shows a support made of insulating material with a central supply channel B1 for clean air L, which ments through radial bores B2 in the annular slot S flows.
Fig. 2 shows a implementation made of Iso lierstoff. The air is led through a pipe approach B into the flange ring and from there through holes B1 into the interior. It reaches the flushing slot S through radial bores B2.
3 illustrates a support with a rod-shaped insulator and sheet metal sleeves pushed over to shield the insulator surface and guide the scavenging air. The purge gas passes through the flange F and holes <I> B </I> between the insulator <I> I </I> and the sleeve H and flows out through the air gap S from there.
Fig. 4 shows. a bushing made of insulating material with shielding made of sheet metal. The purging gas flows from the flange ring F through holes B into the purging slot S.
In the event that a special gas has to be dedusted in which the admixture of air is not permitted, gas cleaned by the dedusting apparatus can be used as the flushing gas.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH224043T | 1942-02-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH224043A true CH224043A (en) | 1942-10-31 |
Family
ID=4453341
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH224043D CH224043A (en) | 1942-02-05 | 1942-02-05 | Isolator on electrical dust extractors. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH224043A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0010784A1 (en) * | 1978-10-27 | 1980-05-14 | Metallgesellschaft Ag | Device and method for avoiding a soiling turbulence during the ventilation of insulators in electrofilters |
EP0587441A1 (en) * | 1992-09-11 | 1994-03-16 | Trion Inc. | Venturi insulator for use in an electrostatic precipitator |
-
1942
- 1942-02-05 CH CH224043D patent/CH224043A/en unknown
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0010784A1 (en) * | 1978-10-27 | 1980-05-14 | Metallgesellschaft Ag | Device and method for avoiding a soiling turbulence during the ventilation of insulators in electrofilters |
EP0587441A1 (en) * | 1992-09-11 | 1994-03-16 | Trion Inc. | Venturi insulator for use in an electrostatic precipitator |
US5421863A (en) * | 1992-09-11 | 1995-06-06 | Trion, Inc. | Self-cleaning insulator for use in an electrostatic precipitator |
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