US3760151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arc detecting material admission apparatus for use in combination with an electric arc heater
Assignee: Westinghouse Electric Corp
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Filing: 1972-08-11
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Granted: 1973-09-18
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Expires: 1992-08-11
Abstract
Abstract A materials admission or quench tube assembly disposed downstream of an electric arc heater, this assembly being disposed adjacent to the downstream electrode of the electric arc heater but insulated therefrom, the assembly having the capability of admitting quench material to a stream of gas which has been previously heated by an arc in the upstream heater or being capable of providing process material to that stream or both, the materials admission and quenching assembly having as an integral part thereof an electrical current transformer electrically connected to an indicating or control means. In the event a root of an electric arc which normally resides or strikes against the downstream electrode in the arc heater strikes against an internal portion of the materials admission and quenching tube the electrical current flowing from the root of the arc which has struck the internal portion of the materials admission and quenching tube will flow through the region enclosed by the current transformer and returned to ground through a suitable ground connection. The flow of current through the region enclosed by the current transformer will energize the current transformer to an extent sufficient to cause the indicating or control means electrically connected to the current transformer to reach to the current and therefore provide an indication of the fact that the root of an arc has struck an internal part of the materials admission and quenching structure and compensate therefor if desirable.
Inventors
- 👤 F Azinger
- 👤 C Wolf
- 👤 M Fey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:41
CPC Classifications
B; B23; B23K; B23K10/00; H; H05; H05B; H05B7/00; H05B7/18; H05B7/185; H05H; H05H1/00; H05H1/24; H05H1/26; H05H1/32
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
68 words
An arc heater apparatus of the type including a plurality of spaced electrode means between which an electric arc is struck for heating a proximately situated gas, comprising: an arc detector-and-material admission means disposed adjacent one of said spaced electrodes for providing material to said heated gas to interact therewith including integral means for electrically detecting the impingement of an electric arc near said arc detector-and-material admission means.
Claim 2
Dependent Claim
68 words
An arc heater apparatus of the type including a plurality of spaced electrode means between which an electric arc is struck for heating a proximately situated gas, comprising: an arc detector-and-material admission means disposed adjacent one of said spaced electrodes for providing material to said heated gas to interact therewith including integral means for electrically detecting the impingement of an electric arc near said arc detector-and-material admission means.
Claim 3
Dependent Claim
37 words
The combination as claimed in claim 1 wherein said gas flows, said arc detector and material admission means is disposed downstream of said one adjacent electrode means as determined bY the direction of flow of said gas.
Claim 4
Dependent Claim
23 words
The combination as claimed in claim 1 wherein said arc detector-and-material admission means is electrically insulated from said one of said spaced electrodes.
Claim 5
Dependent Claim
17 words
The combination as claimed in claim 1 comprising cooling means for cooling said arc detector-and-material admission means.
Claim 6
Dependent Claim
98 words
The combination as claimed in claim 4 wherein said cooling means comprises: a cooling channel integral with said arc detector-and-material admission means; and a heat exchanger means spaced from said arc detector-and-material admission means but communicating with said cooling channel to form a closed system for supplying a cooling medium to said arc detector-and-material admission means and for removing the relatively warmer cooling medium therefrom after it passes through said channel, the heat from said relatively warmer cooling medium being cooled by said heat exchanger means to thereby provide said cooling medium for return to said cooling channel.
Claim 7
Dependent Claim
13 words
The combination as claimed in claim 5 wherein said cooling medium comprises water.
Claim 8
Dependent Claim
40 words
The combination as claimed in claim 1 wherein said plurality of spaced electrode means comprise a pair of annularly shaped electrodes disposed axially along a common central axis, said arc detector-and-material admission means being disposed along said common central axis.
Claim 9
Dependent Claim
122 words
The combination as claimed in claim 7 wherein said gas flows, said arc detector-and-material admission means is in electrical contact with said adjacent one of said spaced electrodes and is disposed downstream therefrom as determined by the direction of flow of said gas comprising: a cooling channel integral with said arc detector-and-material admission means; and a heat exchanger means spaced from said arc detector-and-material admission means but communicating with said cooling channel in a closed system for supplying water to said arc detector-and-material admission means for cooling said channel and for removing relatively warmer water therefrom, the heat from said relatively warmer water being cooled by said heat exchanger means to thereby provide said cooling water for return to said cooling channel.
Claim 10
Dependent Claim
108 words
The combination as claimed in claim 8 including means for indicating the presence of an electric arc on said arc detector-and-material admission means, wherein said integral means for electrically detecting the impingment of an electric arc upon said arc detector-and-material admission means comprises an electrical current transformer electrically communicating with said means for indicating the presence of an arc upon said arc detector-and-material admission means, said current transformer being annular and concentric about said common axis and disposed to detect electrical current flowing in said arc detector-and-material admission means from the point of arc impingment on said arc detector-and-material admission means to said adjacent one of said electrodes.
Claim 11
Dependent Claim
49 words
The combination as claimed in claim 8 wherein said arc detector-and-material admission means comprises a material admission structure having generally radially spaced openings therein past which said heated gas flows, said spaced openings communicating with a source of material to provide material to said heated gas to interact therewith.
Claim 12
Dependent Claim
102 words
The combination as claimed in claim 10 including means for indicating the presence of a spurious arc on said arc detector-and-material admission means, wherein said integral means for electrically detecting the impingement of an electric arc upon said arc detector-and-material admission means comprises an electrical current transformer electrically communicating with said means for indicating the presence of an arc upon said arc detector-and-material admission means, said current transformer being annular and concentric about said common axis and disposed to detect electrical current flowing in said arc detector-and-material admission means from the point of arc impingement thereon to said adjaCent one said electrode.
Claim 13
Dependent Claim
13 words
The combination as claimed in claim 11 wherein said material comprises process material.
Claim 14
Dependent Claim
13 words
The combination as claimed in claim 11 wherein said material comprises quenching material.
Claim 15
Dependent Claim
13 words
The combination as claimed in claim 11 wherein said material comprises a fluid.
Claim 16
Dependent Claim
13 words
The combination as claimed in claim 14 wherein said fluid comprises a gas.
Claim 17
Dependent Claim
26 words
The combination as claimed in claim 9 wherein said means for indicating said impingement of said arc provides a control function of said arc heater apparatus.
References Cited (Backward Citations)
US3145287A
Cited
US3676638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |