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1. 发明专利

GB577329A Improvements in or relating to spring-operated driving mechanism for electric switchgear 未知
公开(公告)号：GB577329A
公开(公告)日：1946-05-14
申请号：GB184744
申请日：1944-02-01
申请人： REYROLLE A & CO LTD , ARCHIBALD ALLAN , JOSEPH SMALL
IPC分类号： H01H3/30 , H01H75/04
摘要： 577,329. Automatic circuit-breakers ; actuation of switches. REYROLLE & CO., Ltd., A., ALLAN, A., and SMALL, J. Feb. 1, 1944, No. 1847. [Class 38 (v)] Spring-operated driving mechanism for electric switch gear, in which the movement of a single driven member performs a number of successive alternate opening and closing operations, comprises two or more springs from which the energy is released in succession and means for preventing the release of energy from one spring while another is in operation and for limiting the movement of the driven member after each operation, external means for subsequently releasing it for the next operation being provided. In one form the driven shaft B, Fig. 1, carries a gear B in mesh with gears mounted through pawls A and ratchets A on shafts A , of which two only are shown and which are connected to torsion springs A fixed at one end. The springs are wound by partial rotation of the shafts A by the engagement of arms D thereon with a cam E on a motor or hand-driven sleeve E , the shafts being retained by the engagement of projections G thereon with triggers G . The springs are released by means of afreely mounted trip plate H having studs H thereon engaged by an externally-operated trip lever M. The shaft B carries a toothed stop plate J engaged by an arm K. The stop arm is released at the beginning of an operation by a cam L which engages an arm K integral with the arm K and is carried by a sleeve L with the plate H , the stop plate J being connected to the release plate L by a pin-and-slit connection J , L whereby the initial movement of the trip plate releases the stop arm K. In other forms, the springs are charged by rotating one end, the other end being connected to the parts to be driven. As shown in Figs. 4 and 5, the springs A carry pinions Q at one end meshing with a central pinion Q operated for winding by a worm Q . At the other end the springs carry double-ended arms R fitted with rollers R to engage cam rings S each having a radial slot S , the rollers pertaining to each pair of opposite springs engaging one of the rings S . With the springs wound up, one of the rollers R enters a slot and exerts a torque, the rollers of the other three springs bearing on the inner surface of the rings and their unwinding being thus prevented. The roller emerges after a half revolution of the spring and the drive is taken up by a roller on the next spring entering the slot. The springs are rewound after all have made a half rotation. The inner surface of the rings may be cylindrical or may curve inwards towards the slots. The rotary member S is fitted with teeth S engaged a pawl S' withdrawn by a solenoid. In a further modification, the cam consists of a disc with a radial, peripheral slot T, Fig. 8, and each spring carries a four-armed cross U fitted with rollers which engage therein in succession. The springs are rewound as they are discharged, each spring having a slotted disc V, Fig. 10, thereon engaged by an arm W on a central winding shaft. In another form the springs are wound in pairs.

2. 发明专利

GB525754A Improvements in or relating to electric contacts 未知
公开(公告)号：GB525754A
公开(公告)日：1940-09-04
申请号：GB653839
申请日：1939-02-28
申请人： REYROLLE A & CO LTD , ARCHIBALD ALLAN , JOSEPH SMALL , WILLIAM ANDERSON
IPC分类号： H01H1/38
摘要： 525,754. Contact-members for switches. REYROLLE & CO., Ltd., A., ALLAN, A., SMALL, J., and ANDERSON, W. Feb. 28, 1939, No. 6538. [Class 38 (v)] A contact, suitable as either the upper or lower fixed contact of the circuit-breaker of Specification 512,623, and adapted to co-operate with a movable rod contact E, comprises a conducting cylinder W containing a number of contact arms R arranged more or less tangentially to E and loaded by springs R acting between the inner end of each contact arm and the outer end of. the, next arm but one, and passing through an aperture R in the intervening arm, insulating bushings R being provided in order to prevent current-flow in the springs. In Fig. 4 there 'are two intervening arms, as shown at T', T , for the springs S, there being two rows of the latter for a contact of considerable length axially of E. The upper end of W is closed 'by a conducting plate W', and E slides in a tubular extension W on the lower face. In Fig. 1, the alternate arms with their springs form two independent cyclical systems, but the arrangement of Fig. 4 and Fig. 3 (not shown) forms a single cyclical system. Each arm R is so curved that its outer end lies on the same side of the tangent, as V, V , as the axis of contact E so that compressive stresses, which might cause buckling of the arms, are avoided, such stresses being, however, still reduced if the outer ends of the arms lie on or close to the associated tangents.

3. 发明专利

GB425107A Improvements in or relating to metal-clad electric switchgear 未知
公开(公告)号：GB425107A
公开(公告)日：1935-03-04
申请号：GB2190833
申请日：1933-08-04
申请人： REYROLLE A & CO LTD , ARCHIBALD ALLAN , JOSEPH SMALL
IPC分类号： H02B13/035
摘要： 425,107. Switchgear structures. REYROLLE & CO., Ltd., A., Hebburn-on-Tyne, ALLAN, A., Cragside, Ashleigh Grove, Tynemouth, and SMALL, J., 9, Broadway, Sheriff Hill, Gateshead-on-Tyne. Aug. 4, 1933, Nos. 21908 and 27034. [Class 38 (v)] Metal - clad switchgear comprises busbar sections normally connected together to form a closed ring, in combination with a circuit - breaker panel associated with each junction between the sections and comprising a liquid-insulated breaker controlling a teeconnection from the busbar to the external circuit. A liquid-filled chamber associated with the breaker contains a switch or switches for controlling the connections between the two busbar sections and the breaker, whereby all three or any two thereof can be connected together. As applied to a 66 kV. three-phase system, in which four feeders H and two transformers H are adapted to be connected to the busbars, single-phase oil circuit-breakers A are arranged one behind the other, Fig. 3 in two rows, Fig. 2, each row consisting of three panels which correspond to two feeders and a transformer, Fig. 4. The fixed contacts of each breaker A, Fig. 5, extend into compartments in an upper oil-chamber Band carry contacts E, D respectively connected to the feeder H or transformer connection, and carrying an isolating arm D which can be rotated to engage either contact F, F on adjacent busbar sections C or an earthing contact D . The contact F pivotally carries an arm F which can be moved into or out of engagement with F for sectionalizing the busbars, and is made arcuate so that in its engaging position, the contact D can be moved to and fro between F, F without breaking contact with the busbars. Switches G on a shaft or shafts G are provided for engaging the contacts F, F to earth the busbar sections provided they are disconnected at both ends, and an earthing switch H for the contact E is also provided. The busbars C extend through chambers B from end to end of the rows, Fig. 2, and are interconnected at the ends at C , Fig. 3, to form a closed ring. Each busbar C, Fig. 7, comprises an oil-conduit C containing a conductor C surrounded by impregnated paper insulation C , to which at one end of chamber B a metal flange C is attached in an oil-tight manner. At the other end the insulation C can slide freely through a gland C to accommodate temperature changes, or is connected to the chamber wall by a flexible diaphragm, and the conduit is formed, as with a corrugated part C , for the same purpose. To inspect a panel, the three breakers A therein are opened and the switches D moved to their earthing contacts D . The switches D of the adjacent panels are then moved to engage the busbar sections remote from the panel to be inspected, (if not already there), and the switches F of those panels opened. Switches G and H3 of the panel to be inspected are then moved to earthing position, so that the panel is isolated and earthed without affecting the supply to the other panels. Any breaker can be earthed on both sides by means of D , H3 while leaving the sections through the panel connected by F and alive. The usual interlocks are provided but are not shown, and in addition an interlock prevents application of the lowering-and-removing truck to the breaker unless H is in the earthed position. The truck, Figs. 2, 3, comprises standards J on a wheeled base J and threaded shafts J carrying nuts forming parts of carriages J . The shafts J are rotatable by an electric motor J4 or handle J to raise J until recesses therein engage lugs on the tank A, the bolts connecting A to its top-plate B are then undone and the tank is lowered. Where the breaker has its own top-plate, it may be lowered bodily, plug-and-socket isolating contacts being provided for connecting with contacts D, E. The master interlocking handle and actuating handles for the section-aligning and other switches of the panels are shown at K, K , respectively. Modifications of the sectionalizing and isolating arrangement comprise the following. Two switch arms are mounted for rotation about and connected to, the busbars and arranged so that each can be moved into or out of engagement with the other for sectionalizing and into or out of engagement with the breaker contact for isolating, Figs. 8, 9, (not shown). A single rotary contact of sector shape can be moved to interconnect any two or all three of the contacts D, F, F , provision being also made for insertion to the sector-contact of a testing terminal, subject to the switches being in appropriate positions, Figs. 10-14, (not shown). Provision may also be made in the cable compartment for a connection to a potential transformer which is located on the ground and isolated by a longitudinally-movable, insulated conductor, withdrawable from the compartment through an orifice in the base thereof, which orifice is closed by a sliding sluice valve or other means when the conductor is withdrawn. The sector contact may also be replaced by two independently-movable, sector contacts, both engageable with the contacts D, F, F , Figs. 15, 16, (not shown). For lower voltages, the set of single-phase breakers may be replaced by a single three-phase breaker.

4. 发明专利

GB561590A Improvements in or relating to operating means for electric switchgear 未知
公开(公告)号：GB561590A
公开(公告)日：1944-05-25
申请号：GB1643542
申请日：1942-11-20
申请人： REYROLLE A & CO LTD , JOSEPH SMALL
IPC分类号： H01H3/30
摘要： 561,590. Actuation of switches. REYROLLE & CO., Ltd., A., and SMALL, J. Nov. 20, 1942, No. 16435. [Class 38 (v)] [Also in Group XXXII] A rigid shaft A adapted to drive a series of isolators C through bevel gearing B, C, is itself rotated for this purpose through 90‹ by release of energy stored in a spring G within, and connected at one end G , to the shaft. The other end G of the spring is connected to winding gear H .. H and the stored energy is released at will by energizing a winding F to release a four-toothed ratchet wheel E secured to the shaft A, the arrangement being that the pawl F returns and arrests E at the next tooth. A single length of rod may replace the hairpinshaped spring shown, Fig. 2 (not shown), or the spring may comprise a series of concentric tubes, one within the other, and each connected at opposite ends to the ones lying, respectively, outside and inside it. The Provisional Specification states also that successive movements of A in the same direction may close and open the switch, and the gearing B, C may be replaced by cams or levers.

5. 发明专利

GB512623A Improvements in or relating to gas-blast electric circuit-breakers 未知
公开(公告)号：GB512623A
公开(公告)日：1939-09-21
申请号：GB717538
申请日：1938-03-08
申请人： REYROLLE A & CO LTD , ARCHIBALD ALLAN , JOSEPH SMALL , WILLIAM ANDERSON
IPC分类号： H01H33/83
摘要： 512,623. Gas-blast switches ; pneumatic actuation; switchgear structures. REYROLLE & CO., Ltd., A., ALLAN, A., SMALL, J., and ANDERSON, W. March 8, 1938, No. 7175. [Class 38 (v)] The co-operating contacts of a gas-blast switch are both movable, the first being arranged, on opening of the switch, to move at high speed through a short distance to form an initial gap of length suitable for gas-blast arc extinction, whilst the second is arranged to move after a brief time interval through a relatively long distance to provide the desired long final gap, after which the first contact preferably returns to normal position. Fig. 1 shows a switchgear structure employing a horizontally-withdrawable circuit-braker, shown in detail in Fig. 2, the outer metal casing A' of which is movable on rails A" and carries plug contacts B', B' for engaging socket contacts B', B' associated, respectively, with busbars B' and a transformer, feeder or other external circuit. The phases of a threephase gear may have separate casings A or a common casing. The plugs B , B are connected by conductors C , D' to metal housings C, D associated, respectively, with the first and second contacts, the conductors passing through an insulating tube A which is separated from A by. insulating compound or compressed gas. When the gear is in operative position, nozzles F', F engage orifices connected by pipes F , F' to a gas reservoir through an electromagnetic valve casing F , these pipes controlling the opening and closing operations, respectively, and providing the gas blast for the former. The first contact comprises an annular arcing piece C carried on a combined piston C and throat member C' slidable in a metal plug C in housing C against the action of spring C'. The second contact comprises the arcing tip E', normally closing the orifice in arcing piece C', and the conducting rod E which is slidable in the spring contacts D and connected by insulating part E' to the operating piston rod E . To effect conjoint operation of all phases, a shaft E' carries pinions E engaging racks on the piston rods. Opening-pressure is applied to the upper face of the piston E' through a narrow gap D between the rod E and cylinder E' the gap serving slightly to delay the effect of the pressure. The rod has also a locking projection E' engaged by a spring-latch G having a gas-pressure operated piston G', the full area of which is not exposed until the latch begins to move, thereby imparting a slight delay. When the operating pressure has built up sufficiently to overcome the springs G , C , the contact C , C , due to its low inertia, moves quickly to the desired small gap, thus opening the throat to the blast. After a suitable delay, the latch is released and the lower contact moves downwards to provide the final gap, whereupon the gas-supply ceases and spring C restores the upper contact in readiness for the closing movement of the lower contact. In order to reduce the tendency of the upper contact to move prematurely due to the pressure having access to the full face of the piston, arrangements may be employed in which a reduced area is initially exposed, as by fitting in the housing C an internal flange against which a small auxiliary piston-like surface abuts, Figs. 3 and 4 (not shown). Fig. 5 shows a further arrangement in which the closed and open position are shown, respectively, on the left and right-hand side, and the piston K is separate from the arcing piece K'. A spring K' normally urges the piston K against an insulating flange K so that only a small part of its face is exposed until upward movement begins. After a given travel, the piston engages and lifts the throat member K , with the arcing piece, against spring-action until arrested by a stop K . The piston K also houses contacts L engaging the sides of the arcing-tip E . A heavier current-rating may be got by providing a number of parallel-connected annular contacts in the piston, each cooperating with a spring-contact on the rod E, Fig. 6 (not shown). Instead of a parallel connection, three groups of contacts may be connected in series, Fig. 7, by arranging two upper contacts P (only one shown) in a metal plug P' in an insulating plug P in the piston P. The arcing tips P are mounted in an insulating head P on the rod E, two being interconnected by a flexible lead P', while the other is connected to the rod E by a lead P . Contacts.-Constructions suitable for the contacts L of Fig. 5 and for those D' of Fig. 1 are shown in Fig. 8. A number of tangential arms L are arranged with their inner ends L', forming the contact-surface, bearing against the cylindrical surface of the lower contact E or E'. whilst the outer end L houses a spring L acting on the inner end of the adjacent arm. Engaging faces L', L on adjacent arms limit the inward movement of the arms when the contact E' is withdrawn.

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