Patent US3774372A successfully refreshed from Google Patents.
US3774372A
Expired / Lapsed
US
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Connection of discharge electrodes
Assignee: Apparatebau Rothemuehle Brandt and Kritzler GmbH
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Filing: 1971-10-12
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Granted: 1973-11-27
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Expires: 1991-10-12
Abstract
Abstract An electrostatic precipitator has vertical discharge electrodes which are restrained from vibration by horizontal connecting members running between the electrodes and interacting with them. The connecting members are secured outside the electric field to end frames of the support structure from which the electrodes hang. The electrodes and the connecting members are capable of relative vertical movement where they interact. One form of connecting member is a taut wire woven through each row of discharge electrodes; in another form an electrode is received in a sleeve passing vertically through a rod-like connecting member. The connecting members are provided at a level or levels not coincident with the expected nodes of standing waves likely to occur in the electrodes.
Inventors
- 👤 H Heer
- 👤 W Kantelhardt
- 👤 G Kritzler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:06
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/86; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49927; Y10T29/49929
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
156 words
In an electrostatic precipitator of a type having a plurality of long vertically extending discharge electrodes and a plurality of collecting electrodes arranged in alternating arrays and adapted for gas flow in horizontal directions past the electrodes, with an upper suppoRt frame from which the discharge electrodes hang in parallel said arrays and being loaded by tensioning weights at their lower ends, being spaced apart in the arrays by spacing grids at the said lower ends which are rigidly and fixedly spatially related to the upper support frame by end frame structures situated out of the electrical field of the precipitator, there being at least one horizontally extending connecting member at vertical levels which are nearly equal to exact fractions of the lengths of the electrodes so that the said at least one connecting member acts to restrain vibration in the electrodes at positions slightly offset from the nodal positions of standing waves in the electrodes.
Claim 2
Dependent Claim
156 words
In an electrostatic precipitator of a type having a plurality of long vertically extending discharge electrodes and a plurality of collecting electrodes arranged in alternating arrays and adapted for gas flow in horizontal directions past the electrodes, with an upper suppoRt frame from which the discharge electrodes hang in parallel said arrays and being loaded by tensioning weights at their lower ends, being spaced apart in the arrays by spacing grids at the said lower ends which are rigidly and fixedly spatially related to the upper support frame by end frame structures situated out of the electrical field of the precipitator, there being at least one horizontally extending connecting member at vertical levels which are nearly equal to exact fractions of the lengths of the electrodes so that the said at least one connecting member acts to restrain vibration in the electrodes at positions slightly offset from the nodal positions of standing waves in the electrodes.
Claim 3
Dependent Claim
31 words
The improvement claim in claim 1 wherein the connecting member includes a taut wire woven through the row of electrodes and abutting on alternate sides of the electrodes along the row.
Claim 4
Dependent Claim
24 words
The improvement claimed in claim 1 wherein the connecting member bears an insulating guide for each electrode for guiding the said relative vertical displacement.
Claim 5
Dependent Claim
56 words
The improvement claimed in claim 3 wherein each said guide is tubular and receives part of the electrode within it each electrode is subdivided along its length into a plurality of discrete parts, the said parts being joined at their adjacent ends in a tube sleeve, the sleeves being respectively received in the said tubular guides.
Claim 6
Dependent Claim
54 words
The improvement claimed in claim 1 wherein the at least one connecting member is at at least one level which divides the height of the electrodes into a plurality of approximately equal parts so that the said at least one level is spaced from the nodal position of a standing wave in the electrode.
Claim 7
Dependent Claim
47 words
The improvement claimed in claim 1 wherein in an electrostatic precipitator having a plurality of rows of said electrodes at least one said connecting member is provided for each row the connecting members at the same level being spaced by horizontal spacers secured to the end frames.
Claim 8
Dependent Claim
162 words
In an electrostatic precipitator having a plurality of long discharge electrodes vertically suspended under tension in an array from an upper carrier frame and having an end frame rigidly associated with the carrier frame beyond each end of the array and out of the electric field of the precipitator, and at least one horizontally extending connecting member secured between the end frames and interacting with each electrode in the array part way along its height, the connecting member being effective against standing wave vibrations in the discharge electrodes induced by the horizontal flow thereagainst of gases the improvement comprising a plurality of discrete, insulating elements strung on the length of a connecting member which is a taut wire woven through the array of electrodes and abutting on alternate sides of adjacent electrodes in the array, whereby the insulating elements restrain the discharge electrodes against displacement along the horizontal connecting member but permit relative vertical displacement of the electrodes and the connecting member.
Claim 9
Dependent Claim
162 words
In an electrostatic precipitator having a plurality of long discharge electrodes vertically suspended under tension in an array from an upper carrier frame and having an end frame rigidly associated with the carrier frame beyond each end of the array and out of the electric field of the precipitator, and at least one horizontally extending connecting member secured between the end frames and interacting with each electrode in the array part way along its height, the connecting member being effective against standing wave vibrations in the discharge electrodes induced by the horizontal flow thereagainst of gases the improvement comprising a plurality of discrete, insulating elements strung on the length of a connecting member which is a taut wire woven through the array of electrodes and abutting on alternate sides of adjacent electrodes in the array, whereby the insulating elements restrain the discharge electrodes against displacement along the horizontal connecting member but permit relative vertical displacement of the electrodes and the connecting member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |