US2142861A - Electric circuit interrupter - Google Patents
Electric circuit interrupter Download PDFInfo
- Publication number
- US2142861A US2142861A US201410A US20141038A US2142861A US 2142861 A US2142861 A US 2142861A US 201410 A US201410 A US 201410A US 20141038 A US20141038 A US 20141038A US 2142861 A US2142861 A US 2142861A
- Authority
- US
- United States
- Prior art keywords
- arc
- electric circuit
- circuit interrupter
- resins
- alkyd
- 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
Links
- 229920000180 alkyd Polymers 0.000 description 20
- 239000000463 material Substances 0.000 description 10
- 239000007789 gas Substances 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 239000011347 resin Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 6
- 239000001099 ammonium carbonate Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000012779 reinforcing material Substances 0.000 description 4
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 3
- 239000000020 Nitrocellulose Substances 0.000 description 3
- FJWGYAHXMCUOOM-QHOUIDNNSA-N [(2s,3r,4s,5r,6r)-2-[(2r,3r,4s,5r,6s)-4,5-dinitrooxy-2-(nitrooxymethyl)-6-[(2r,3r,4s,5r,6s)-4,5,6-trinitrooxy-2-(nitrooxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-3,5-dinitrooxy-6-(nitrooxymethyl)oxan-4-yl] nitrate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O)O[C@H]1[C@@H]([C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@@H](CO[N+]([O-])=O)O1)O[N+]([O-])=O)CO[N+](=O)[O-])[C@@H]1[C@@H](CO[N+]([O-])=O)O[C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O FJWGYAHXMCUOOM-QHOUIDNNSA-N 0.000 description 3
- 229920001220 nitrocellulos Polymers 0.000 description 3
- MXHKJQTYOAFPBY-UHFFFAOYSA-N 2-(2,3-dihydroxypropoxycarbonyl)benzoic acid Chemical compound OCC(O)COC(=O)C1=CC=CC=C1C(O)=O MXHKJQTYOAFPBY-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 235000011124 aluminium ammonium sulphate Nutrition 0.000 description 2
- 229920003180 amino resin Polymers 0.000 description 2
- LCQXXBOSCBRNNT-UHFFFAOYSA-K ammonium aluminium sulfate Chemical compound [NH4+].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O LCQXXBOSCBRNNT-UHFFFAOYSA-K 0.000 description 2
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 2
- 235000012501 ammonium carbonate Nutrition 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- 239000007859 condensation product Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 235000006408 oxalic acid Nutrition 0.000 description 2
- 150000007519 polyprotic acids Polymers 0.000 description 2
- 150000005846 sugar alcohols Polymers 0.000 description 2
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- 229920001875 Ebonite Polymers 0.000 description 1
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- -1 amino compounds Chemical class 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000010338 boric acid Nutrition 0.000 description 1
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 235000010216 calcium carbonate Nutrition 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 235000013877 carbamide Nutrition 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 229940079938 nitrocellulose Drugs 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/76—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid wherein arc-extinguishing gas is evolved from stationary parts; Selection of material therefor
Definitions
- circuit interrupter oi the aforesaid type
- the arc is drawn in a confining insulating structure, such as a tube composed of material which under the influence of the are heat emits gases or vapors tending to extinguish the arc.
- Inorganic materials such, for example, as boric acid, ammonium alum, etc., have been proposed as the gas-emitting material.
- water is chemically combined so that, under the influence of the arc, vapors are released for the arc-extinguishing process. terials cannot be molded or formed satisfactorily the more desirable mechanical characteristics,
- electric circuit interrupters having insulating structures disposed adjacent and in confining relation to an arc formed upon opening the circuit-comprise a resinous condensation product of a polyhydric alcohol and a polybasic acid or an anhydride thereof.
- condensation products are now commonly known in the resin art as alkyd v resins.
- the preparation of an alkyd resin from, for example, glycerine and phthalic anhydride may be carried out in accordance :with the method described, for instance, in U. S. Patents 1,108,329 and 1,108,330, issued to Michael J. Callahan on August 25, 1914.
- Other polyhydric alcohols and other polybasicacids may be caused to react to produce an alkyd resin.
- Modified alkyd resins also may be used in carrying the present invention into effect, for example oilmodified alkyd resins prepared as described, for example, in U. S. Patent 1,893,873 issued to Roy H. Kienle on January 10, 1 933.
- circuit breaker having means, such as the stationary contact I and the movable rod contact 2, for opening the circuit so as to form an arc, and an insulating structure 3 forming an arc chamber for closely confining the are between the contacts.
- the insulating structure 3 con-- sists of a tubular member closed at the fixed contact end and open at the other end for receiving the rod contact.
- the tube I is formed of, or has at least its inner walls sure faced with a composition comprising an allgd resin such, for example, as a glyceryl-phthalate alkyd resin.
- an allgd resin such as a glyceryl-phthalate alkyd resin.
- They may be cast, and may be hardened in a cast'condition, or they may be made in the form of a pressable, heat-hardenable powder, which is molded under pressure, or under heat and pressure, to form the shaped insulating structure.
- the shaped mass is cured, for instance under heat, to harden it.
- Tubes for circuit interrupters may be made of alkyd resins in any desired wall thickness and of a wall strength adequate to meet the widest They have the range of service requirements. further desirable feature that they show minimum tendency to cause high voltage surges during the arc-interrupting process.
- alkyd resins suitably combined with materials which influence the gas vapors evolved from the surfaces of the tube under the heat of the arc and serving to quench the arc.
- materials which influence the gas vapors evolved from the surfaces of the tube under the heat of the arc and serving to quench the arc.
- materials are urea, oxalic acid, boric acid, ammonium carbonate, ammonium bicarbonate, ammonium alum or other compounds capable of liberating an arc-interrupting gas.
- high decomposition velocity and compatibility with alkyd resins', nitro-cellulose (cellulose nitrate) is especially suitable for combining with such resins to form improved arc-extinguishing tubes.
- the filled or unfilled alkyd resins may be combined with reinforcing materials such, for instance, as linen, paper, wool, spun glass, asbestos, and so forth. Thesematerials in sheet or other form may, for example, be coated and impregnated with an alkydresin composition and shaped into tubular form. Also, alternate layers of such reinforcing materials and sheet alkyd resin may be superposed to form a laminated insulating structure, the innermost layer being formed of alkyd resin. Vulcanized fiber Due to its or other conventional arc-interrupting tubes also may be fitted with an inner liner of a composition composed chiefly of alkyd resin.
- An electric circuit interrupter comprising means for forming an arc, and an insulating structure disposed adjacent and in confining relation to said are, the walls of said structure in proximity to said are being surfaced with a composition comprising alkyd resin.
- An electric circuit interrupter comprising means for forming an arc, and an insulating tubular structure within which said are is drawn, said tubular structure being in confining relation to said are and having walls in proximity thereto formed of a material consisting chiefly of glyceryl-phthalate resin.
- An electric circuit interrupter comprising means for forming an arc, and an insulating structure disposed adjacent and in confining relation to said arc, said insulating structure comprising an alkyd resin suitably combined with other material capable of yielding an arc-interrupting gas under the heat of the are.
- An electric circuit interrupter comprising means for forming an arc, and an insulating structure disposed adjacent and in confining relation to said arc, said insulating structure comprising a'combination of alkyd resin and cellulose nitrate.
- An electric circuit interrupter including an arc-confining structure, said structure consisting of a reinforcing material impregnated with a composition comprising an alkyd resin.
- An electric circuit interrupter including an arc-confining structure, said structure consist- 7 ing of a reinforcing material having an inner resin, the innermost layer being constituted of the said resinous composition.
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Organic Insulating Materials (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
- Gas-Insulated Switchgears (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE204362X | 1937-05-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2142861A true US2142861A (en) | 1939-01-03 |
Family
ID=5781433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US201410A Expired - Lifetime US2142861A (en) | 1937-05-29 | 1938-04-11 | Electric circuit interrupter |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2142861A (de) |
| CH (1) | CH204362A (de) |
| GB (2) | GB501241A (de) |
-
1938
- 1938-04-11 US US201410A patent/US2142861A/en not_active Expired - Lifetime
- 1938-05-10 GB GB13957/38A patent/GB501241A/en not_active Expired
- 1938-05-20 CH CH204362D patent/CH204362A/de unknown
-
1939
- 1939-01-24 GB GB2446/39A patent/GB509000A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB501241A (en) | 1939-02-23 |
| CH204362A (de) | 1939-04-30 |
| GB509000A (en) | 1939-07-10 |
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