CN2178381Y - Automatic latching device for charging-proof box earthing knife-blade switch - Google Patents
Automatic latching device for charging-proof box earthing knife-blade switch Download PDFInfo
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- CN2178381Y CN2178381Y CN 93229870 CN93229870U CN2178381Y CN 2178381 Y CN2178381 Y CN 2178381Y CN 93229870 CN93229870 CN 93229870 CN 93229870 U CN93229870 U CN 93229870U CN 2178381 Y CN2178381 Y CN 2178381Y
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- circuit
- disconnecting link
- casing
- locking gear
- splice grafting
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Abstract
The utility model relates to an automatic locking device which can prevent closing earthing knife switches for electric power systems. The automatic locking device is composed of a sensor part, an actuator part, a hand-hold power part and corresponding circuits. The utility model can effectively prevent operators closing earthing knife switches with electricity and guarantee the personal safety and safety of equipment. The utility model has the advantages of reliable operation, strong applicability, simple operation, convenient operation, etc.
Description
The utility model relates to a kind of electric field that is used for electric power system and detects the self-locking gear that electromagnetic clutch type prevents charged splice grafting ground disconnecting link.
Using a large amount of ground connection disconnecting links in electric power system, because the operation of ground connection disconnecting link has very big erratic behavior, the operation sequence that is difficult to enter procedure lock is implemented management and is prevented misoperation, and can only carry out the simplest management with the monomer lock.Being with the ground connection isolation switch with the GW5 series that generally adopts at present is example, and when isolation switch was in off position, the ground connection disconnecting link just lost mechanical latching, was in the state of no anti-error reserve measure.At this moment, if the circuit that ground connection disconnecting link one side is connect is the anti-electricity that send of the other side's charging circuit or user, then be easy to take place the accident of charged splice grafting ground disconnecting link.
Task of the present utility model is to provide a kind of electric field to detect the self-locking gear that electromagnetic clutch type prevents charged splice grafting ground disconnecting link, this kind self-locking gear can prevent charged splice grafting ground disconnecting link effectively, operator's the person and device security when guaranteeing splice grafting ground disconnecting link.
Operation principle of the present utility model and technical scheme are as follows:
Operation principle: transformer station's power distribution station every layout all be comparison rule, thereby the electric-field strength in its space distributes and also certain rules must be arranged.The utility model promptly is to judge that by the size of the alternating voltage over the ground that relatively records (being electric field strength) whether ground connection disconnecting link top lead-in wire has electricity, is equipped with the blocking function that the electromagnetic clutch type dead lock realizes preventing charged splice grafting ground disconnecting link again.
Device constitutes: this locking device is made up of transducer, actuator and hand-held power supply three parts and related circuit, and the effect of three parts is respectively detection electric field signal, comparison signal, finish blocking function and operating power is provided and operation is issued an order.Wherein, transducer is made up of induction pole (6), piezo-resistance (9), earth potential pole plate (7), the sensing chip of induction pole and earth potential pole plate are fixed together with insulation blanket stud (8), piezo-resistance (9) is housed between the two, and the horizontal welding of earth potential pole plate is on every phase ground connection disconnecting link bar (2).The signal that detects is delivered to the terminal board of circuit board assemblies through shielded conductor (10), and screen is on actuator (4) one side joint ground.Actuator is made up of clutch (12), socket (13), electromagnetic clutch type dead lock (14), circuit board closed component (15), chamber door door lock catch (16), manual unlocking bar (17), door lock (18), operating mechanism handle (19), fixed head (20), casing (21), chamber door (23) and loud speaker (22).Wherein, casing (21) is installed in mechanism's seat (11) afterwards by fixed head (20), and two pins of clutch (12) insert in handle (19) hole, during operation, handle (19) drives clutch (12) and rotates together, and the position and the direction of operating of handle is reflected in the actuator; A side is provided with socket (13) and the circuit board closed component (15) that is used to insert hand-held power supply S in the casing (21), assembly (15) has metal shell, there are 3 red led LED1-3 to make comparisons on the panel and show usefulness, 1 three couples normally-closed contact test button SA are arranged, there are 3 sensitivity adjustment potentiometer W1 and 3 threshold values to adjust potentiometer W2, assembly is provided with 28 instrument terminals plates behind, being used for lead-in wire connects and test point, opposite side is provided with loud speaker (22) in the casing, the middle part is provided with electromagnetic clutch type dead lock (14), chamber door door lock catch (16), manual unlocking bar (17) and door lock (18), chamber door (23) is equipped with in the casing front.Direct solenoid disengaging type dead lock is made up of clutch (28), active toothed disk (29), bearing pedestal (30), guider screw (31), quiet fluted disc (32), thrust spring (33), fixed screw (39), (42) electromagnet iron yoke (34), coil (35), iron core (36), coil pressure ring (37), bottom (38) and plain cushion (40).Wherein, bearing pedestal (30) front end and clutch (28) link, and bearing pedestal (30) back and electromagnet iron yoke (34), bottom (38) link successively; Active toothed disk (29), quiet fluted disc (32), thrust spring (33), coil pressure ring (37) are housed in the cavity that constitutes between bearing pedestal (30), electromagnet iron yoke (34) and bottom (38) three successively; Iron core (36) is equipped with at the cavity middle part; Between clutch (28) and active toothed disk (29), quiet fluted disc (32) and the iron core (36) plain cushion (40) is housed respectively, and it is fixing with fixed screw (39), then use guider screw (31) and fixed screw (42) fixing between active toothed disk (29) and quiet fluted disc (32), the electromagnet iron yoke (34) respectively, because the restriction of guider screw, quiet fluted disc can only be made axial motion and can not rotate.Because the engagement of two teeth keeps by spring, so there be not external force to make under the situation of dynamic and static fluted disc disengaging, clutch can only be done the rotation of separating brake direction.And when electromagnetic actuation, iron core moves right, and drives quiet fluted disc and moves right, thereby the sound fluted disc is broken away from, the clutch rotation of direction of just can closing a floodgate this moment.
Hand-held power supply S is by handle (43), high-voltage energy storage capacitor device (44), DC/DC booster circuit plate (45), ship shape issue an order switch (46), neon lamp (47), light emitting diode lamp (48), 1.5 type ickel-cadmium cell group GNY(49), plastic casing (50), power line (52), plug (53), side cover plate (54) and screw (51) form.Wherein, device has 16 high-voltage energy storage capacitor devices (44), DC/DC booster circuit plate (45), battery pack GNY(49 in the shell (50)) (20); Shell upper is provided with handle (43), and picks out power line (52) and plug (53) from capacitor, and the panel of shell one side is provided with ship shape issue an order switch (46), neon lamp (47) and indicator light (48), and side cover plate is fixed with screw.Circuit of the present utility model comprises that electric field signal detects comparison circuit, executive circuit, warning circuit and power circuit.Wherein: electric field signal detects comparison circuit and by the number of phases 3 electric field detector G1, G2, G3 is set, and the field intensity signal of its detection is delivered to comparator B1, B2 and B3 through shielding conductor respectively.The comparative result of comparator carries out delivering to executive circuit after the logic analysis via the OR circuit that D7, D8, D9 constitute, and finishes the locking process.With B1 is example: field intensity signal VE1 through R2, C2 remove high frequency after delivers to emitter follower A1 through C1 every direct join by sensitivity potentiometer W1 dividing potential drop; After the D5 rectification, obtains one and the proportional direct voltage V1 of VE1 by the signal of A1 output; V1 and threshold voltage Vref1 compare in comparator A2, and when V1＞Vref, A2 exports high level 1, otherwise output low level 0.Because D7, D8, D9 and R6 constitute OR circuit, so when any one exports 1 signal among B1, B2 and the B3, the a end will be exported 1 signal, have only when B1, B2 and the whole output of B3 0 signal, the a point could be exported 0 signal, that is when any phase ground connection disconnecting link bar top lead-in wire had electricity, a point will send 1 signal.Also contain in this circuit and prevent that too high field intensity signal from damaging the low-voltage zinc oxide pressure sensitive resistor YM1-3 of element, signal limiter circuit, the voltage reference diode D6 that constitutes by R3 and D1～D4, the W2 that is used to adjust threshold voltage Vref, test button SA and 3 test point P1, P2, P3.
Executor circuit contains triode Q1, relay J 1, J2, diode D10, D11 dead lock BS, capacitor C 5, C6, resistance R 7, R8, loud speaker Y, alarm JB.When input a is 1 signal, triode Q1 conducting, the J1 excitation, contact J1-1 switches to siren JB side by the J2 side, sends audible alarm, and the alert lead-in wire has.At this moment, because of J2 excitation not, J2-1, J2-2 are not closed, so not adhesive of dead lock BS is in the closing locking state; When lead-in wire nothing electricity, a point is 0 signal, and Q1 ends, and J1 is excitation not, and contact J1-1 makes the J2 excitation, J2-1, J2-2 closure, thus make BS energising adhesive, lock release.When nothing adds operating power, because of making the BS adhesive, so this locking device is in blocking all the time.Alarm circuit contains operational amplifier A 3, A4, resistance R 15～R18, capacitor C 10, C11, triode Q4 and loud speaker Y, A3, R15, R16, R17, R18, C10 constitute single amplifier oscillator, drive Q4 by emitter follower A4, loud speaker Y is given the alarm.
Hand-held power circuit contains battery pack GNY, resistance R 9～R14, R21, capacitor C 6～C9, diode D12～D16, triode Q2, Q3, the general time-base circuit IC of green LED LED.R21 and D16 reduce to 12V with the 24V supply voltage, power to IC, IC and R13, R14, C8, C7 constitute the 10KHZ square-wave oscillator, drive Q2, Q3 by R12, drive pulse transformer MB and produce the 10KHZ high-voltage pulse, by high-frequency rectification pipe D14 rectification, by K switch to high-voltage energy storage capacitor device C6 energy storage.When hand-held attaching plug inserted actuator socket CK, whole device entered operating state.If ground connection disconnecting link side lead-in wire does not have electricity, then contact J2-1, J2-2 closure, if this moment, the BS wire loop did not have broken string, then green LED LED is bright, proves that the loop is intact.When K switch got to 1 by 2, C6 discharged to BS, makes the BS adhesive.C6 to the BS discharge off after, the 24V power supply is enough to make BS to remain on attracting state by the electric current of R10, till pulling up plug CK.The effect of D12 is to prevent C6 to the power supply reverse charge, and whether neon lamp ND is used to indicate C6 full.
When the utility model was installed, elder generation was contained in actuator on the ground connection disconnecting link mechanism seat (11), and transducer is welded on the ground connection disconnecting link bar, sensor and actuator was coupled together with 3 shielding conductors to get final product then.Because the field strength distribution of infield has nothing in common with each other, must carry out field adjustable before using.In the use, should regularly carry out test and maintenance work.
The utility model dependable performance utilizes it can prevent the charged splice grafting of operating personnel ground disconnecting link effectively, guarantees the person and device security.This device also has characteristics such as applicability is strong, simple to operate, easy to use, is suitable for wide popularization and application.
Fig. 1 is that (ground connection disconnecting link solid line is represented disconnected position to the utility model mounting structure schematic diagram among the figure, and dotted line represents to close the position.）
Fig. 2 is the enlarged drawing at A position among Fig. 1, and Fig. 3 is the vertical view of Fig. 2.
Fig. 4 is actuator (a 4) structural representation, and Fig. 5 is the vertical view (operating mechanism handle solid line is represented disconnected position among the figure, and dotted line represents to close the position) of Fig. 4.
Fig. 6 is a direct solenoid disengaging type dead lock structural representation.
Fig. 7 is hand-held power supply architecture schematic diagram, and Fig. 8 is Fig. 7 end view.
Fig. 9,10,11,12 is respectively the utility model detection comparator, actuator, hand-held power supply and alarm circuit schematic diagram.
Below in conjunction with accompanying drawing enforcement of the present utility model is described further.
In the utility model, the sensing chip of the sensor sensing utmost point (6) is made through the sealing of surface insulation waterproof material by the epoxy radicals copper foil plate, and effective dimensions is 300 * 100mm.The rectangular zigzag of tooth of dynamic and static fluted disc in the direct current magnetic-type dead lock (14), 60 ° of tooth angles, 30 ° of dedendum angles, the active toothed disk center is a square hole, quiet fluted disc is provided with the suction pore.Circuit board black box (15) is hermetically sealed with the epoxy resin casting, makes it to have good protection against the tide and fungicidal properties.Hand-held outer casing of power supply is a black rectangle box body, uses the ABS engineering plastics through the mold pressing once-forming.The specifications and models of the main electric elements that adopt in the circuit are as follows:
Bilateral is LM158 with operational amplifier A 1, A2, A3, A4;
Minitype high-voltage electric container C 6 200 μ f/400V;
Pulse transformer MB makes by oneself with the E10 FERRITE CORE;
General time-base circuit IC NE555;
Voltage reference diode D6 20W7C 6.2V;
Ordinary silicon voltage-stabiliser tube D3, D4 2CW60;
Silk ribbon human relations capacitor C 1 CL1 400V/2 μ f;
Polypropylene capactive C2 CBB 400V/0.1 μ f;
Zinc-oxide piezoresistor YM1-3 100V
Adjust potentiometer W1 WH 1W/470K, W2 WH 0.5W/10K;
Fast diode D14 is 5A/1000V, and all the other are all 2N4148;
Triode Q2 is BD882; All the other are all CS9013.
Claims (6)
1, a kind of anti-charged splice grafting ground disconnecting link self-locking gear that is used for electric power system is made up of transducer, actuator and hand-held power supply three parts and related circuit, it is characterized in that:
(a) transducer is made up of induction pole (6), piezo-resistance (9), earth potential pole plate (7);
(b), actuator is made up of clutch (12), socket (13), electromagnetic clutch type dead lock (14), circuit board closed component (15), chamber door door lock washer (16), manual unlocking bar (17), door lock (18), operating mechanism handle (19), fixed head (20), casing (21), chamber door (23) and loud speaker (22);
(c) hand-held power supply is made up of issue an order switch (46), neon lamp (47), light emitting diode lamp (48), 1.5 type ickel-cadmium cell groups (49), plastic casing (50), power line (52), plug (53), side cover plate (54) and screw (51) of handle (43), high-voltage energy storage capacitor device (44), DC/DC booster circuit plate (45), ship shape.
2, anti-charged splice grafting ground according to claim 1 disconnecting link self-locking gear, it is characterized in that, the sensing chip of induction pole in the transducer (6) and earth potential pole plate (7) are fixed together with insulation blanket stud, piezo-resistance (9) is housed between the two, and the horizontal welding of earth potential pole plate is on every phase ground connection disconnecting link bar; The signal that detects is delivered to the terminal board of circuit board assemblies through shielded conductor, and screen is on actuator one side joint ground.
3, anti-charged splice grafting ground according to claim 1 disconnecting link self-locking gear is characterized in that the casing of actuator (21) is installed in by fixed head (20) after mechanism's seat, in two pins insertion handle (19) holes of clutch (12); A side is provided with socket (13) and the circuit board closed component (15) that is used to insert hand-held power supply in the casing (21), and assembly (15) has metal shell, and 3 red led LED are arranged on the panel
1-3, 1 three couples of normally-closed contact test button SA, 3 sensitivity adjustment potentiometer W1 and 3 threshold values adjust potentiometer W2, assembly is provided with behind to be used to go between and connects and 28 instrument terminals plates of test point; Opposite side is provided with loud speaker (22) in the casing, and the middle part is provided with electromagnetic clutch type dead lock (14), chamber door door lock catch (16), manual unlocking bar (17) and door lock (18), and chamber door (23) is equipped with in the casing front.
4, anti-charged splice grafting ground according to claim 1 disconnecting link self-locking gear, it is characterized in that, bearing pedestal (30) front end and the clutch (28) of electromagnetic clutch type dead lock (14) link, and bearing pedestal (30) back and electromagnet iron yoke (34), bottom (38) link successively; Active toothed disk (29), quiet fluted disc (32), thrust spring (33), coil pressure ring (37) are housed in the cavity that constitutes between bearing pedestal (30), electromagnet iron yoke (34) and bottom (38) three successively, and iron core (36) is equipped with at the cavity middle part; Between clutch (28) and active toothed disk (29), quiet fluted disc (32) and the iron core (36) plain cushion (40) is housed respectively, and fixing with fixed screw (39), use guider screw (31) and fixed screw (42) fixing between active toothed disk (29) and quiet fluted disc (32), the electromagnet iron yoke (34) respectively.
5, anti-charged splice grafting ground according to claim 1 disconnecting link self-locking gear is characterized in that the interior device of hand-held outer casing of power supply (50) has 16 high-voltage energy storage capacitor devices (44), DC/DC booster circuit plate (45), battery pack (49); Shell upper is provided with handle (43), and picks out power line (52) and plug (53) from capacitor, and the panel of shell one side is provided with ship shape issue an order switch (46), neon lamp (47) and indicator light (48), and side cover plate is fixed with screw.
6, anti-charged splice grafting ground according to claim 1 disconnecting link self-locking gear is characterized in that circuit part detects comparison circuit, executive circuit, warning circuit and power circuit by electric field signal and constitutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93229870 CN2178381Y (en) | 1993-12-08 | 1993-12-08 | Automatic latching device for charging-proof box earthing knife-blade switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93229870 CN2178381Y (en) | 1993-12-08 | 1993-12-08 | Automatic latching device for charging-proof box earthing knife-blade switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2178381Y true CN2178381Y (en) | 1994-09-28 |
Family
ID=33806651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93229870 Expired - Fee Related CN2178381Y (en) | 1993-12-08 | 1993-12-08 | Automatic latching device for charging-proof box earthing knife-blade switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2178381Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969178A (en) * | 2012-11-30 | 2013-03-13 | 江苏省电力公司泗洪县供电公司 | Electromagnetic five-prevention lock |
| CN103280345A (en) * | 2013-06-14 | 2013-09-04 | 苏州达宏电子科技有限公司 | Electric operating mechanism for earthing switch |
-
1993
- 1993-12-08 CN CN 93229870 patent/CN2178381Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969178A (en) * | 2012-11-30 | 2013-03-13 | 江苏省电力公司泗洪县供电公司 | Electromagnetic five-prevention lock |
| CN103280345A (en) * | 2013-06-14 | 2013-09-04 | 苏州达宏电子科技有限公司 | Electric operating mechanism for earthing switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |