CN204289120U - A kind of grounding knife switch of superpower making capability of manual/automatic integratedization - Google Patents
A kind of grounding knife switch of superpower making capability of manual/automatic integratedization Download PDFInfo
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- CN204289120U CN204289120U CN201420854392.3U CN201420854392U CN204289120U CN 204289120 U CN204289120 U CN 204289120U CN 201420854392 U CN201420854392 U CN 201420854392U CN 204289120 U CN204289120 U CN 204289120U
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Abstract
The utility model discloses a kind of grounding knife switch of superpower making capability of manual/automatic integratedization, comprise frame, described frame is provided with the fixed contact of three-phase, movable touch knife, operation macro-axis and electric clutch device; Described movable touch knife is also provided with energy-stored spring, described fixed contact is I-shaped structure, the lower end section of described fixed contact is rectangle, the contact-making surface of the lower end of described fixed contact is also embedded with copper-tungsten contact, described copper-tungsten contact is embedded on described fixed contact by the mode of triangular groove angle, and is fixed by little steel pin and described fixed contact riveted.Beneficial effect is: by being embedded with copper-tungsten contact at the contact-making surface of fixed contact and movable touch knife, after meeting the dynamic and thermal stability electric current by 125kA, 50kA time closed, the melting welding of the few area of fixed contact, the smooth separating brake of earthed switch, improves the ability of dynamic and thermal stability performance and tension arc or melting welding; This device compact overall structure is reasonable, manual/automatic integratedization, firmly closed, is separated simple and direct.
Description
Technical field
The utility model relates to technical field of electric control, especially relates to a kind of grounding knife switch of superpower making capability of manual/automatic integratedization.
Background technology
In the developing rapidly of power industry, power distribution network controls, protection automation and intelligentized capital investment shares will increase gradually, has become the calculated focus engineering project of domestic application at present, and has been subject to the extensive concern of electric utility.The intelligent high-voltage switchgear that distribution network automated development need is large quantities of.In high-tension distribution equipment, often earthed switch being used when overhauling, guaranteeing the personal safety of maintainer, and when misoperation the use of the safety of protection system.The technical essential of earthed switch key is the dynamic of earthed switch, thermal stability and earthed switch close performance, earthed switch is dynamic in detail, thermal stability is exactly that earthed switch is under "on" position, by the ability of (4s) withstand current in short-term or peak withstand current (instantaneously), the performance that closes of earthed switch refers to that earthed switch closes the ability of short circuit current (peak value) exactly, namely the situation of electricity is had at major loop, when closing earthed switch if artificial by mistake and cause line short, the unlikely damage of earthed switch, thus ensure the safety of circuit and the person.Earthed switch is in "on" position or just closed moment, if line short, produces shrink electric power and magnetic field electro-dynamic force between dynamic and static contact because of the contraction of short circuit current and the magnetic fields of short circuit current.These two kinds of electric power are destroyed the contact of dynamic and static contact and make to produce arcing or melting welding between contact.So dynamic, the thermal stability of earthed switch and to close performance be exactly refer to that earthed switch overcomes electrodynamic destruction instantaneously and produces the ability of arcing or melting welding between unlikely dynamic and static contact closing state and close a floodgate.
At present electrically grounding knife switch is on the market due in structure and technologic deficiency, it is electrically operated can only accomplish that specified short time withstand current is 31.5kA, Rated peak withstand current and rated short circuit making current are 80kA rank, there is the earthed switch of Large Copacity and high making capability due to switch contact pressure, close spring force etc. and all require that needs are much larger, when its power arm is identical, its operating physical force is quite large, manual conjunction divides all comparatively difficulty, almost cannot realize electronic conjunction and divide.
In order to meet the demand of electricity market, the grounding knife switch of the superpower making capability of a kind of manual/automatic integratedization of my company's independent research, its specified heat-stable current is 50kA, dynamic current and short circuit making current all reach 125kA, it is first manual, electronic all exercisable Large Copacity earthed switch domestic, and by a complete set of type approval test at national High-Voltage Electrical Appliances quality surveillance center, be the utility model grounding knife switch with international most advanced level.
Utility model content
The utility model provides a kind of grounding knife switch of superpower making capability of manual/automatic integratedization, to solve the problem that earthed switch of the prior art cannot meet jumbo dynamic and thermal stability and close performance.
The technical problem that the utility model solves realizes by the following technical solutions:
A kind of grounding knife switch of superpower making capability of manual/automatic integratedization, comprise frame, described frame is provided with the fixed contact of three-phase, the movable touch knife matched with described fixed contact, run through described movable touch knife and realize operation macro-axis that described movable touch knife links and adjustable described operation macro-axis and drive the electric clutch device of described movable touch knife folding; Described movable touch knife is also provided with energy-stored spring, under the driving of described electric clutch device, described operation macro-axis rotates and drives described movable touch knife synchronous axial system, and after turning over dead point, described energy-stored spring can make described movable touch knife quick rotation complete earthed switch to divide or closing operation;
Described fixed contact is I-shaped structure, the lower end section of described fixed contact is rectangle, the contact-making surface of the lower end of described fixed contact is also embedded with copper-tungsten contact, described copper-tungsten contact is embedded on described fixed contact by the mode of triangular groove angle, and is fixed by little steel pin and described fixed contact riveted.
As preferred technical scheme, described movable touch knife comprises moving knife support plate, and one end of described moving knife support plate is fixed on the hinged support of described frame, and described movable touch knife rotates around hinged support under the drive of operation macro-axis; Described moving knife support plate is fixed with U-shaped plate, and described moving knife support plate is clamped in the middle part of described U-shaped plate, contact knife sheet is also fixed with in the both sides of described U-shaped plate, in the inside top of described contact knife sheet, axle sleeve is installed, one bolt-through is in described axle sleeve, and in the outside of described contact knife sheet, disk spring is housed, guarantee there is sufficient pressure between described contact knife sheet.
As preferred technical scheme, also magnetic lock plate is provided with in the both sides of described contact knife sheet, when described movable touch knife closes a floodgate, described contact knife sheet contacts with fixed contact, electric current flows to described contact knife sheet by described fixed contact, when described contact knife sheet produces magnetic field around during electric current, make the symmetrical mutual adhesive of described magnetic lock plate, thus the electronic repulsion overcome between described contact knife sheet, fixed contact is afterburning, when described contact knife sheet close a floodgate or separating brake do not have electric current by time, described magnetic lock plate does not produce the suction-combining force thus does not affect the increase of operational torque.
As preferred technical scheme, be embedded with contact in the inner side of described contact knife sheet, described contact adopts tungsten steel alloy material, wherein, copper-tungsten is the high temperature resistant contact material that a kind of through-current capability is strong, and this improves and improves the tension arc of described contact knife sheet in just conjunction moment or the ability of melting welding greatly.
As preferred technical scheme, described moving knife support plate, U-shaped plate are connected by elastic cylindrical pin with contact knife sheet.
As preferred technical scheme, be arranged on the one or both sides of contact knife sheet at described disk spring.
As preferred technical scheme, described fixed contact is installed on a mounting board, and described mounting panel is fixed on the insulator in described frame.
As preferred technical scheme, described electric clutch device comprises motor, the driving gear be arranged on described motor, be arranged on described operation macro-axis and the driven gear matched with described driving gear and electromagnet; When the power is turned on, described electromagnet obtains electric adhesive, described driving gear and driven gear snapping, make driven gear and driving gear do and move in the same way, realize electric operating, complete one operation close or point after, travel switch switches power-off, and now electromagnet dead electricity is thrown off, and described driven gear resets, ability now by energy-stored spring release makes earthed switch rapid closing, meets the technical performance of standard-required; When operated, earthed switch secondary is in non-electriferous state, and be out of gear state, has no effect completely.
As preferred technical scheme, described electric clutch device also comprises travel switch, an electric capacity is also had access between described travel switch and motor, this design solves when described energy-stored spring does not cross dead point, and after described travel switch changes, can not the normal occlusion phenomenon of dividing, after described travel switch switches, described electromagnet can not at once dead electricity, residual charge by described electric capacity makes arrangement of clutch to be separated, treat that described energy-stored spring is crossed dead point and is separated later again, make earthed switch operating characteristics overall completely reliable.
Beneficial effect is: (1) is by being embedded with copper-tungsten contact at the contact-making surface of fixed contact and movable touch knife, after meeting the dynamic and thermal stability electric current by 125kA, 50kA time closed, the melting welding of the few area of fixed contact, the smooth separating brake of earthed switch, improves the ability of dynamic and thermal stability performance and tension arc or melting welding;
(2) this device compact overall structure is reasonable, manual/automatic integratedization, firmly closed, is separated simple and direct.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the utility model: a kind of end view of grounding knife switch of superpower making capability of manual/automatic integratedization;
Fig. 2 is the utility model: a kind of front view of grounding knife switch of superpower making capability of manual/automatic integratedization;
Fig. 3 is the utility model: a kind of structural representation of fixed contact of grounding knife switch of superpower making capability of manual/automatic integratedization;
Fig. 4 is the utility model: a kind of schematic cross-section of fixed contact of grounding knife switch of superpower making capability of manual/automatic integratedization;
Fig. 5 is the utility model: a kind of movable touch knife front view of grounding knife switch of superpower making capability of manual/automatic integratedization;
Fig. 6 is the utility model: a kind of end view of movable touch knife of grounding knife switch of superpower making capability of manual/automatic integratedization;
Fig. 7 is the utility model: a kind of structural representation of electric clutch device of grounding knife switch of superpower making capability of manual/automatic integratedization.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
With reference to shown in Fig. 1-2, a kind of grounding knife switch of superpower making capability of manual/automatic integratedization, comprise frame 1, frame 1 is provided with the fixed contact 2 of three-phase, the movable touch knife 3 matched with fixed contact 2, run through movable touch knife 3 and realize operation macro-axis 4 that movable touch knife 3 links and adjustable operation macro-axis 4 and drive the electric clutch device 5 of movable touch knife 3 folding; Movable touch knife 3 is also provided with energy-stored spring 6, and under the driving of electric clutch device 5, operation macro-axis 4 rotates and drives movable touch knife 3 synchronous axial system, and after turning over dead point, energy-stored spring 6 can make movable touch knife 3 quick rotation complete earthed switch to divide or closing operation.
With reference to shown in Fig. 3-4, fixed contact 2 is arranged on mounting panel 21, and mounting panel 21 is fixed on the insulator 22 in frame 1.Fixed contact 2 is I-shaped structure, the lower end section of fixed contact 2 is rectangle, the contact-making surface of the lower end of fixed contact 2 is also embedded with copper-tungsten contact 23, and copper-tungsten contact 23 is embedded on fixed contact 2 by the mode of triangular groove angle, and is fixed by little steel pin and fixed contact 2 riveted.Copper-tungsten is the high temperature resistant contact material that a kind of through-current capability is strong, and this improves and improves movable touch knife 3 greatly with fixed contact 2 in firm ability of closing tension arc instantaneously or melting welding.
With reference to shown in Fig. 5-6, movable touch knife 3 comprises moving knife support plate 31, and one end of moving knife support plate 31 is fixed on the hinged support 7 of frame 1, and movable touch knife 3 rotates around hinged support 7 under the drive of operation macro-axis 4; Moving knife support plate 31 is fixed with U-shaped plate 32, and moving knife support plate 31 is clamped in the middle part of U-shaped plate 32, is also fixed with contact knife sheet 33 in the both sides of U-shaped plate 32.Moving knife support plate 31, U-shaped plate 32 are connected by elastic cylindrical pin 37 with contact knife sheet 33.
Be provided with axle sleeve 34 in the inside top of contact knife sheet 33, a bolt 35 through axle sleeve 34, and is equipped with disk spring 36 in the outside of contact knife sheet 33, has guaranteed there is sufficient pressure between contact knife sheet 33.In order to realize the fastness contacted, be arranged on the one or both sides of contact knife sheet 33 at disk spring 36, wherein contact knife sheet 33 is all installed for best in both sides.
This device is also provided with magnetic lock plate 38 in the both sides of contact knife sheet 33, when movable touch knife 3 closes a floodgate, contact knife sheet 33 contacts with fixed contact 2, electric current flows to contact knife sheet 33 by fixed contact 2, when contact knife sheet 33 produces magnetic field around during electric current, make the adhesive mutually of symmetrical magnetic lock plate 38, thus the electronic repulsion overcome between contact knife sheet 33, fixed contact 2 is afterburning, when contact knife sheet 33 close a floodgate or separating brake do not have electric current by time, magnetic lock plate 38 does not produce the suction-combining force thus does not affect the increase of operational torque.
Be embedded with contact 39 in the inner side of contact knife sheet 33, contact 39 adopts tungsten steel alloy material, and wherein, copper-tungsten is the high temperature resistant contact material that a kind of through-current capability is strong, and this improves and improves the tension arc of contact knife sheet 33 in just conjunction moment or the ability of melting welding greatly.
With reference to shown in Fig. 7, electric clutch device 5 comprises motor 51, the driving gear 52 be arranged on motor 51, be arranged on operation macro-axis 4 and the driven gear 53 matched with driving gear 52 and electromagnet 54; When the power is turned on, electromagnet 54 obtains electric adhesive, driving gear 52 and driven gear 53 snapping, make driven gear 53 and driving gear 52 do and move in the same way, realize electric operating, complete one operation close or point after, travel switch 55 switches power-off, and now electromagnet 54 dead electricity is thrown off, and driven gear 53 resets, the ability now discharged by energy-stored spring 6 makes earthed switch rapid closing, meets the technical performance of standard-required; When operated, earthed switch secondary is in non-electriferous state, and be out of gear state, has no effect completely.
Electric clutch device 5 also comprises travel switch 55, an electric capacity 56 is also had access between travel switch 55 and motor 51, this design solves when energy-stored spring 6 does not cross dead point, and after travel switch 55 changes, can not the normal occlusion phenomenon of dividing, after travel switch 55 switches, electromagnet 54 can not at once dead electricity, residual charge by electric capacity 56 makes arrangement of clutch to be separated, and treats that energy-stored spring 6 is crossed dead point and is separated later again, makes earthed switch operating characteristics overall completely reliable.
Wherein, the manual operation principle of this device:
During closing operation, opplied moment makes operation macro-axis 4 overcome the moment of resistance to drive operation panel to rotate along combined floodgate direction, and makes moving knife support plate 31 on movable touch knife 3 by energy-stored spring 6 dead point, and energy-stored spring 6 releases energy, and makes earthed switch rapid closing.At closing position, movable touch knife 3 passes through butterfly spring 36 and fixed contact 2 flange part (edge of a knife) contacts solid and reliablely; During sub-switching operation, opplied moment makes operation macro-axis 4 overcome moment and spring force, drives console panel to rotate along separating brake direction, and makes the moving knife support plate 31 compressed energy-storage spring 6 on movable touch knife 3 to crossing dead point.Now, connect switch separating brake, energy-stored spring 6 energy storage terminates, and closes a floodgate in order to next time.
The principle of the electric automatic operation of this device:
When motor power is connected, the electromagnetic actuation on arrangement of clutch makes, on driving wheel and driven pulley snapping, two-wheeled to be done and moves in the same way, realize electric operating.When motor power cuts off, arrangement of clutch electromagnet resets, and two are out of gear, and realize manual operation.
More than show and describe general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (9)
1. the grounding knife switch of the superpower making capability of manual/automatic integratedization, it is characterized in that, comprise frame, described frame is provided with the fixed contact of three-phase, the movable touch knife matched with described fixed contact, run through described movable touch knife and realize operation macro-axis that described movable touch knife links and adjustable described operation macro-axis and drive the electric clutch device of described movable touch knife folding; Described movable touch knife is also provided with energy-stored spring, under the driving of described electric clutch device, described operation macro-axis rotates and drives described movable touch knife synchronous axial system, and after turning over dead point, described energy-stored spring can make described movable touch knife quick rotation complete earthed switch to divide or closing operation;
Described fixed contact is I-shaped structure, the lower end section of described fixed contact is rectangle, the contact-making surface of the lower end of described fixed contact is also embedded with copper-tungsten contact, described copper-tungsten contact is embedded on described fixed contact by the mode of triangular groove angle, and is fixed by little steel pin and described fixed contact riveted.
2. the grounding knife switch of the superpower making capability of a kind of manual/automatic integratedization according to claim 1, it is characterized in that, described movable touch knife comprises moving knife support plate, one end of described moving knife support plate is fixed on the hinged support of described frame, and described movable touch knife rotates around hinged support under the drive of operation macro-axis; Described moving knife support plate is fixed with U-shaped plate, and described moving knife support plate is clamped in the middle part of described U-shaped plate, contact knife sheet is also fixed with in the both sides of described U-shaped plate, in the inside top of described contact knife sheet, axle sleeve is installed, one bolt-through is in described axle sleeve, and in the outside of described contact knife sheet, disk spring is housed, guarantee there is sufficient pressure between described contact knife sheet.
3. the grounding knife switch of the superpower making capability of a kind of manual/automatic integratedization according to claim 2, it is characterized in that, also magnetic lock plate is provided with in the both sides of described contact knife sheet, when described movable touch knife closes a floodgate, described contact knife sheet contacts with fixed contact, electric current flows to described contact knife sheet by described fixed contact, when described contact knife sheet produces magnetic field around during electric current, make the symmetrical mutual adhesive of described magnetic lock plate, thus overcome described contact knife sheet, electronic repulsion between fixed contact is afterburning, when described contact knife sheet closes a floodgate or separating brake does not have electric current to pass through, described magnetic lock plate does not produce the suction-combining force thus does not affect the increase of operational torque.
4. the grounding knife switch of the superpower making capability of a kind of manual/automatic integratedization according to claim 2, is characterized in that, is embedded with contact in the inner side of described contact knife sheet, and described contact adopts tungsten steel alloy material.
5. the grounding knife switch of the superpower making capability of a kind of manual/automatic integratedization according to claim 2, is characterized in that, described moving knife support plate, U-shaped plate are connected by elastic cylindrical pin with contact knife sheet.
6. the grounding knife switch of the superpower making capability of a kind of manual/automatic integratedization according to claim 2, is characterized in that, is arranged on the one or both sides of contact knife sheet at described disk spring.
7. the grounding knife switch of the superpower making capability of a kind of manual/automatic integratedization according to claim 1, is characterized in that, described fixed contact is installed on a mounting board, and described mounting panel is fixed on the insulator in described frame.
8. the grounding knife switch of the superpower making capability of a kind of manual/automatic integratedization according to claim 1, it is characterized in that, described electric clutch device comprises motor, the driving gear be arranged on described motor, to be arranged on described operation macro-axis and the driven gear matched with described driving gear and electromagnet; When the power is turned on, described electromagnet obtains electric adhesive, described driving gear and driven gear snapping, driven gear and driving gear is done and moves in the same way, realize electric operating, completes an operation and closes or divide.
9. the grounding knife switch of the superpower making capability of a kind of manual/automatic integratedization according to claim 8, it is characterized in that, described electric clutch device also comprises travel switch, an electric capacity is also had access between described travel switch and motor, after described travel switch switches, described electromagnet can not at once dead electricity, and the residual charge by described electric capacity makes arrangement of clutch to be separated, and treats that described energy-stored spring is crossed dead point and is separated later again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420854392.3U CN204289120U (en) | 2014-12-25 | 2014-12-25 | A kind of grounding knife switch of superpower making capability of manual/automatic integratedization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420854392.3U CN204289120U (en) | 2014-12-25 | 2014-12-25 | A kind of grounding knife switch of superpower making capability of manual/automatic integratedization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204289120U true CN204289120U (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420854392.3U Expired - Fee Related CN204289120U (en) | 2014-12-25 | 2014-12-25 | A kind of grounding knife switch of superpower making capability of manual/automatic integratedization |
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|---|---|
| CN (1) | CN204289120U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485237A (en) * | 2014-12-25 | 2015-04-01 | 上海西屋投资有限公司 | Manual and automatic integrated earthing knife switch with superhigh making capability |
| CN104835674A (en) * | 2015-04-30 | 2015-08-12 | 国家电网公司 | Operating mechanism and direct-operated grounding switch using operating mechanism |
| CN105931916A (en) * | 2016-06-27 | 2016-09-07 | 辽宁电能发展股份有限公司 | Single-phase protection grounding switch and grounding protection system |
-
2014
- 2014-12-25 CN CN201420854392.3U patent/CN204289120U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485237A (en) * | 2014-12-25 | 2015-04-01 | 上海西屋投资有限公司 | Manual and automatic integrated earthing knife switch with superhigh making capability |
| CN104835674A (en) * | 2015-04-30 | 2015-08-12 | 国家电网公司 | Operating mechanism and direct-operated grounding switch using operating mechanism |
| CN105931916A (en) * | 2016-06-27 | 2016-09-07 | 辽宁电能发展股份有限公司 | Single-phase protection grounding switch and grounding protection system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 201401 Shanghai Fengxian District Shanghai Hangzhou Highway 599 Building 1 Workshop Patentee after: Westinghouse Technology (Shanghai) Co., Ltd. Address before: Fengxian District Nanqiao Xidu road 201401 Shanghai City No. 322 Building 5 room 1310 Patentee before: SHANGHAI WESTINGHOUSE INVESTMENT CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20201225 |