CN203503114U - Device for alarming looseness of pile head of transformer station ground wire - Google Patents
Device for alarming looseness of pile head of transformer station ground wire Download PDFInfo
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- CN203503114U CN203503114U CN201320681001.8U CN201320681001U CN203503114U CN 203503114 U CN203503114 U CN 203503114U CN 201320681001 U CN201320681001 U CN 201320681001U CN 203503114 U CN203503114 U CN 203503114U
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Abstract
The utility model discloses a device for alarming looseness of a pile head of transformer station ground wire, which comprises a machinery apparatus, a power supply apparatus, a signal transmitting circuit, a signal receiving circuit and an alarm circuit; the machinery apparatus comprises a case, a plunger, a pin, an electrode, a spring and an adjusting screw; the case is a cylindrical body with openings at two ends, the pin and the adjusting screw are respectively positioned at the two ends of the cylindrical body and seal two openings of the cylindrical body, and the inner wall of the cylindrical body of one end with the adjusting screw is an screw thread segment so that the adjusting screw screws in the opening of the cylindrical body. The device for alarming looseness of the pile head of transformer station ground wire has the advantages that due to looseness of a line-clamp screw in use and artificial factors, a grounding device is not perfectly contacted, the necessary alarming should be carried out for prompting maintainer, operator and inspector to detect the condition, so that the generation of injury accidents due to induced electricity by contact failure of ground wire can be avoided.
Description
Technical field
The utility model relates to a kind of transformer substation grounding wire pile crown device for warning looseness.
Background technology
At transformer substation grounding wire pile crown, loose alarming circuit is set, in order to implement better the application of ground wire in < < safety work order > >, to remind, to warn field service personnel and operating personnel can constantly note the state of ground wire (or earthing switch blade), prevent because of ground connection pile crown loosened screw, ground wire loose contact, maintainer does not find in time, causes induced electricity or outside to carry out electric injury maintainer when work.Stop the generation of work safety accident, make the safe operation of equipment long period.
At present, in the on-the-spot ground wire extensively existing, be only after electrical verification, ground wire to be accessed to pile by five anti-lock management and control, by ground wire wire clamp contact arrangement.In actual service work, because ground wire contact is bad, there is dividing plate in ground wire and maintenance place, come off and contact badly, tend to cause induced electricity or outside to carry out electric injury maintainer.In power construction process, in electric system, because ground wire loose contact or ground wire come off, cause maintainer's electric injury case more.From can finding out case, accident leaves lesson written in blood to people, to equipment, brings huge damage, to system, brings very large fluctuation, to the country and people, brings huge loss.
In prior art, original ground connection stationary installation is that the rotation of conventional wire clamp is fixing, causes wire clamp screw thread loosening or artificially earthing clamp is not fixed in application, causes electric power overhaul personnel induced electricity or outside in construction to carry out electric injury maintainer.Therefore, ground wire loose contact, to electric system, bring injury to personnel, system stability destruction, power equipment to bear powerful short-circuit current, design Earth pile-head loose alarming circuit, can earth wire contact when bad and carry out necessary alarm, to point out maintainer or operating personnel to again check.
Utility model content
The utility model is the weak point existing in above-mentioned prior art for avoiding, and a kind of transformer substation grounding wire pile crown device for warning looseness is provided, so that earth wire contacts and carries out necessary alarm, prompting maintainer or operating personnel when bad and take care.
The utility model be technical solution problem by the following technical solutions.
Transformer substation grounding wire pile crown device for warning looseness, its design feature is to comprise mechanical hook-up, supply unit, signal sending circuit, signal receiving circuit and warning circuit; Described mechanical hook-up comprises shell, plunger, ejector pin, electrode, spring and set screw; Described shell is the cylindrical shell of both ends open, described ejector pin and described set screw lay respectively at the two ends of cylindrical shell and seal two openings of described cylindrical shell, and the inwall of the cylindrical shell of the one end at described set screw place is thread segment so that within described set screw can screw in the opening of described cylindrical shell;
Between described ejector pin and described set screw, plunger and spring are set, described plunger and described ejector pin connect, and the two ends of described spring are connected to respectively in described plunger and described set screw; In described ejector pin and the described plunger part that connects, on the cylindrical shell of described shell, be provided with along the through hole of barrel described in the radial penetration of described cylindrical shell, in described through hole, be provided with described electrode, described electrode is between described ejector pin and described plunger;
Described electrode comprises positive electrode and negative electrode, when plunger positive electrode and negative electrode when electrode direction is moved and compress electrode are connected, when plunger disconnects between positive electrode and negative electrode away from electrode and while unclamping electrode;
Described positive electrode is connected with negative pole with the positive pole of described supply unit respectively with negative electrode;
Described supply unit is connected with described signal sending circuit, and the alerting signal of supply unit being sent by described signal sending circuit is transferred to signal receiving circuit;
Described signal receiving circuit is connected with described warning circuit, by signal receiving circuit, alerting signal is passed to warning circuit, by warning circuit, reports to the police.
The design feature of transformer substation grounding wire pile crown device for warning looseness of the present utility model is also:
Described mechanical hook-up also comprises insulation course; On the hole wall of described through hole, be provided with insulation course.
Described mechanical hook-up also comprises O-ring seal; Left end at described ejector pin is arranged with O-ring seal; The left end of the cylindrical shell of described shell is set to shoulder hole, and within described ejector pin is stuck in described shoulder hole, the outer peripheral face of described O-ring seal matches with the inner peripheral surface of described shoulder hole.
Described mechanical hook-up also comprises set nut; In described set screw, be arranged with set nut, between described set nut and described set screw, pass through threaded engagement.
Described signal sending circuit comprises triode Q1, diode D1～D2, relay J 1, wireless transmit chip U1, resistance R 1～R3 and coding integrated chip U2; The base stage of described triode Q1 is connected with described supply unit, the grounded emitter of described triode Q1, the collector of described triode Q1 is connected with the positive pole of described diode D1, the negative pole of described diode D1 is connected with power supply VCC, and the two ends of described relay J 1 are connected on the positive pole and negative pole of described diode D1; The negative pole of described diode D1 is connected with described wireless transmit chip U1 by K switch 1, on described wireless transmit chip U1, is connected with antenna A1;
Described wireless transmit chip U1 is connected with described coding integrated chip U2, and described diode D2, resistance R 1～R3 are connected between described wireless transmit chip U1 and described coding integrated chip U2.
Described signal receiving circuit comprises wireless receiving chip U3, resistance R 4～R5 and decoding integrated chip U4; Described wireless receiving chip U3 is upper is connected with antenna A2; Described wireless receiving chip U3 is connected with decoding integrated chip U4, and described resistance R 4～R5 is connected between described wireless receiving chip U3 and decoding integrated chip U4.
Described warning circuit comprises resistance R 6～R8, triode Q2, diode D3, relay J 2, LED, Music Clip U5 and loudspeaker U10; The base stage of described triode Q2 is connected with described decoding integrated chip U4 by described resistance R 6, the grounded emitter of described triode Q2, the collector of described triode Q2 is connected with the positive pole of described diode D3, the negative pole of described diode D3 is connected with power supply VCC, and the two ends of described relay J 2 are connected on the positive pole and negative pole of described diode D3;
The negative pole of described diode D2 is connected with K switch 2, and described resistance R 7 is all connected with described K switch 2 with resistance R 8; Described resistance R 7 is connected with described LED; Described resistance R 8 is connected with described Music Clip U5, and described Music Clip U5 is connected with loudspeaker U6.
Compared with the prior art, the utility model beneficial effect is embodied in:
Transformer substation grounding wire pile crown device for warning looseness of the present utility model, comprise mechanical hook-up, power supply, signal sending circuit, signal receiving circuit, warning circuit, mechanical hook-up switches on power by the variation of pressure, make the wireless senser of signal receiving circuit send signal, signal receiving circuit receives after signal, signal is converted to electric current, makes warning circuit send chimes of doom.
Ground wire pile crown sends alarm sound when loosening, remind maintenance, operation and tour personnel to find in time, reinstall ground wire, guarantee the safety of field service personnel, in conjunction with on-the-spot application in real work, the transformer substation grounding wire pile crown device for warning looseness of utility model.
Transformer substation grounding wire pile crown device for warning looseness of the present utility model, there is small investment, simple in structure, Mobile portable, Mei Suo transformer station only needs to configure several groups, can also be widely used in distribution line construction on security ground wire pile crown, guarantee that ground wire contacts when bad can remind in time the advantages such as maintainer.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of transformer substation grounding wire pile crown device for warning looseness of the present utility model
Fig. 2 is the structural drawing of the mechanical hook-up of transformer substation grounding wire pile crown device for warning looseness of the present utility model.
Fig. 3 is the stressed schematic diagram of plunger of transformer substation grounding wire pile crown device for warning looseness of the present utility model.
Fig. 4 is the signal sending circuit figure of transformer substation grounding wire pile crown device for warning looseness of the present utility model.
Fig. 5 is the signal receiving circuit of transformer substation grounding wire pile crown device for warning looseness of the present utility model and the circuit diagram of warning circuit.
Label in accompanying drawing 2: 1 shell, 2. insulation course, 3 springs, 4 set nuts, 5 set screw, 6 O-ring seals, 7 ejector pins, 8 positive electrodes, 9 negative electrodes, 10 plungers, 11 through holes.
Below pass through embodiment, and the utility model is described in further detail by reference to the accompanying drawings.
Embodiment
Referring to accompanying drawing 1～Fig. 5, transformer substation grounding wire pile crown device for warning looseness, is characterized in that, comprises mechanical hook-up, supply unit, signal sending circuit, signal receiving circuit and warning circuit; Described mechanical hook-up comprises shell 1, plunger 10, ejector pin 7, electrode, spring 3 and set screw 5; The cylindrical shell that described shell 1 is both ends open, described ejector pin 7 and described set screw 5 lay respectively at the two ends of cylindrical shell and seal two openings of described cylindrical shell, and the inwall of the cylindrical shell of the one end at described set screw 5 places is thread segment so that within described set screw 5 can screw in the opening of described cylindrical shell;
Described electrode comprises positive electrode 8 and negative electrode 9, when plunger 10 positive electrode 8 and negative electrode 9 when electrode direction is moved and compress electrode are connected, when plunger 10 disconnects between positive electrode 8 and negative electrode 9 away from electrode and while unclamping electrode;
Described positive electrode 8 is connected with negative pole with the positive pole of described supply unit respectively with negative electrode 9;
Described supply unit is connected with described signal sending circuit, and the alerting signal of supply unit being sent by described signal sending circuit is transferred to signal receiving circuit;
Described signal receiving circuit is connected with described warning circuit, by signal receiving circuit, alerting signal is passed to warning circuit, by warning circuit, reports to the police.
In Fig. 2, the top of electrode is divided into positive electrode, and bottom is divided into negative electrode.When device of the present utility model is arranged in ground wire stake, ejector pin contacts with ground wire stake, and ground wire stake is transmitted power F1 by ejector pin.Two electrodes are between ejector pin and plunger.Two electrodes of upper and lower two parts only have by plunger could form path.When the elastic force F2 of spring is greater than F1, the imperfect earth of ground wire stake is described, now plunger compresses two electrodes, between two electrodes, by plunger, be connected to form an electric pathway, form the alerting signal of ground wire stake imperfect earth, now signal sending circuit detects alerting signal and alerting signal is sent to signal receiving circuit, and signal receiving circuit receives alerting signal and alerting signal is passed to warning circuit, by warning circuit, carries out sound and light alarm.
Described mechanical hook-up also comprises insulation course 2; On the hole wall of described through hole 11, be provided with insulation course 2.
Described mechanical hook-up also comprises O-ring seal 6; Left end at described ejector pin 7 is arranged with O-ring seal 6; The left end of the cylindrical shell of described shell 1 is set to shoulder hole, and within described ejector pin 7 is stuck in described shoulder hole, the outer peripheral face of described O-ring seal 6 matches with the inner peripheral surface of described shoulder hole.
Described mechanical hook-up also comprises set nut 4; In described set screw 5, be arranged with set nut 4, between described set nut 4 and described set screw 5, pass through threaded engagement.
Described signal sending circuit comprises triode Q1, diode D1～D2, relay J 1, wireless transmit chip U1, resistance R 1～R3 and coding integrated chip U2; The base stage of described triode Q1 is connected with described supply unit, the grounded emitter of described triode Q1, the collector of described triode Q1 is connected with the positive pole of described diode D1, the negative pole of described diode D1 is connected with power supply VCC, and the two ends of described relay J 1 are connected on the positive pole and negative pole of described diode D1; The negative pole of described diode D1 is connected with described wireless transmit chip U1 by K switch 1, on described wireless transmit chip U1, is connected with antenna A1;
Described wireless transmit chip U1 is connected with described coding integrated chip U2, and described diode D2, resistance R 1～R3 are connected between described wireless transmit chip U1 and described coding integrated chip U2.
Described signal receiving circuit comprises wireless receiving chip U3, resistance R 4～R5 and decoding integrated chip U4; Described wireless receiving chip U3 is upper is connected with antenna A2; Described wireless receiving chip U3 is connected with decoding integrated chip U4, and described resistance R 4～R5 is connected between described wireless receiving chip U3 and decoding integrated chip U4.
Described warning circuit comprises resistance R 6～R8, triode Q2, diode D3, relay J 2, LED, Music Clip U5 and loudspeaker U10; The base stage of described triode Q2 is connected with described decoding integrated chip U4 by described resistance R 6, the grounded emitter of described triode Q2, the collector of described triode Q2 is connected with the positive pole of described diode D3, the negative pole of described diode D3 is connected with power supply VCC, and the two ends of described relay J 2 are connected on the positive pole and negative pole of described diode D3;
The negative pole of described diode D2 is connected with K switch 2, and described resistance R 7 is all connected with described K switch 2 with resistance R 8; Described resistance R 7 is connected with described LED; Described resistance R 8 is connected with described Music Clip U5, and described Music Clip U5 is connected with loudspeaker U6.
J1 in Fig. 4 and Fig. 5 and J2 are driving relay.Wireless transmit chip U1 is CDT-88, and coding integrated chip U2 is LX2262, and wireless receiving chip U3 is PCR1A, and decoding integrated chip U4 is LX2272, and Music Clip U5 is KD9561.
In Fig. 4, the basis set of triode Q1 is connected with supply unit.When mechanical hook-up detects the situation of imperfect earth, the alerting signal that supply unit sends, supply unit is by triode Q1 and drive relay J 1 to remove turn on-switch K1, and in order to encode, integrated chip U2 and wireless transmit chip U1 provide power supply.The pin 10～13 of coding integrated chip U2 produces regular coding signal 1000, and sends through wireless transmit chip U1.
In Fig. 5, wireless receiving chip U3 receives the signal that wireless transmit chip U1 sends, and by decoding integrated chip, U4 decodes.The base stage of triode Q2 is connected with the pin 10 of described decoding integrated chip U4 by described resistance R 6.Pin 10～13 correspondences of decoding integrated chip U4 be encoded to 1000, the pin 10 of the integrated chip U4 that therefore decodes produces signals, and by triode Q2 with drive relay J 2 to remove turn on-switch K2, for warning circuit provides power supply.After warning circuit switches on power, by LED luminous alarm, Music Clip U5 sends alarm sound by loudspeaker U6 simultaneously.
In Fig. 4 and Fig. 5, set diode D1 and diode D3, be in order to prevent the impact of power supply VCC on triode, to play the effect of isolation.
Wireless transmit chip U1 is CDT-88, for sending the signal through LX2262 coding.Wireless receiving chip U3 is PCR1A, and the signal of reception is decoded by LX2267.Audible alarm process is: by KD9561 chip drives loudspeaker U6, produce police whistle sound.
As Fig. 3, when detected pressures F1 is less than the alarm pressure F2 value presetting, the relevant operation parts of mechanical hook-up switch on power, the transmission of settling signal and acceptance, thus warning device work is reported to the police, it is loosening that prompting staff notices that ground wire screw place occurs, need process.After detected pressures F1 is normal, the mechanical hook-up moving component deenergization of being correlated with, alarm release.
When pressure is not more than setting value, i.e. F1<F2, plunger, to front slide, is connected by plunger handle positive and negative electrode, and circuit is path, sender unit transmitted signal, signal is picked device acknowledge(ment) signal, and warning device sends warning simultaneously.
When pressure is greater than setting value, i.e. F1>F2, plunger moves backward, and positive and negative electrode disconnects, and circuit is for opening circuit, alarm release.
In Fig. 3, F1 is the pressure that ground wire upper end gives, and is detected value; F2 is spring force, and its value presets, and size is relevant with the decrement of spring.By adjusting the set screw shown in Fig. 2, set the alarm pressure value of this system, can realize the adjustability of alarm pressure.
Signal transmission and reception unit is divided can adopt wireless transmit reception.This wireless switching is comprised of radio transmitter and wireless receiving circuit.
Because wireless signal is easily affected by the external environment, therefore from the reliability consideration of system, the control signal of transmitting adopts the mode of coding to transmit, and in the same area, to use a plurality of systems simultaneously and not affect each other, so the coding LX2262 integrated circuit of wireless signal completes, this circuit has 8 bit address signals and 4 bit data signals, different addresses and the combination of data, can work out up to ten thousand kinds of codings, completely can meet in the same area and work independently; Data adopt ASK mode to the modulation system of high frequency carrier,, when transmission data-signal is 1, connect high frequency oscillator power supply, send high-frequency wireless signals, when transmission data are 0, disconnect its power supply, quit work, this design working current when static state is almost nil.Its schematic diagram is as Fig. 4.After power connection, LX2262 chip enters duty, and fixing coded signal is sent by radiating circuit.
What the wireless receiving of receiving circuit and demodulation part adopted is ready-made high frequency receiver module, can simplified design work, and reliability is better, what receiver module adopted is superregenrative reception, concrete demodulating process is: when transmitter sends 1, the work of corresponding transmitting high-frequency circuit, receiving unit will correspondingly be received the high-frequency signal of a 315M, make module be output as 1, when radiating portion send be 0 time, transmitting HFS quits work, and receiving unit is just output as 0, has so just realized the transmission of wireless signal.
Through high frequency reception and demodulation signal out, be the serial signal after coding integrated circuit LX2262 encodes, must just can restore control signal data through corresponding decoding circuit decoding.LX2272 has just served as this decoding task.
2262 and 2272 is coding and decoding integrated circuit of a pair of special use, when 8 bit address data of 8 bit address data of receiving unit 2272 and radiating portion are when identical, will be at a high level of 17 pin outputs of 2272, represent successfully decoded, on 4 bit data positions, export corresponding data-signal simultaneously, follow-up output control circuit is just according to the data bit of decoding output, the Push And Release of gauge tap.Circuit diagram is as Fig. 5.
Select sound circuit and light emitting diode as warning device.When PCR1A receives the signal of different geocodings, LX2272 chip can activate corresponding warning circuit, and loudspeaker sends caution sound, and represents that the corresponding different diode in each region will be luminous, represents that alarm signal occurs in different places.Simple and practical, meet the demands.Multi-path anti-theft alarm police whistle sound adopts KD9561 chip, drives 8 Ω, the loudspeaker of 0.25W.Its circuit theory as shown in Figure 5.
Transformer substation grounding wire pile crown device for warning looseness of the present utility model is installed a pressure alarm sensing device on original earthing wire clip.When earthing clamp appearance is loosening or manual operation is improper, do not tighten, pressure changes, and produces signal and passes to sensor alarming circuit, thereby send chimes of doom, with the line pile crown loose contact of pointing out on-the-spot O&M personnel to connect.
Transformer substation grounding wire pile crown device for warning looseness of the present utility model, have and can wire clamp loosened screw in using and human factor not contacted earthing device and carry out necessary alarm when intact, with prompting maintenance, operation and tour personnel, check, stop to cause the induced electricity advantages such as event generation of hurting sb.'s feelings because of ground wire loose contact.
Claims (7)
1. transformer substation grounding wire pile crown device for warning looseness, is characterized in that, comprises mechanical hook-up, supply unit, signal sending circuit, signal receiving circuit and warning circuit; Described mechanical hook-up comprises shell (1), plunger (10), ejector pin (7), electrode, spring (3) and set screw (5); The cylindrical shell that described shell (1) is both ends open, described ejector pin (7) and described set screw (5) lay respectively at the two ends of cylindrical shell and seal two openings of described cylindrical shell, and the inwall of the cylindrical shell of the one end at described set screw (5) place is thread segment so that within described set screw (5) can screw in the opening of described cylindrical shell;
Plunger (10) and spring (3) are set between described ejector pin (7) and described set screw (5), described plunger (10) connects with described ejector pin (7), and the two ends of described spring (3) are connected to respectively in described plunger (10) and described set screw (5); In described ejector pin (7) and described plunger (10) part that connects, on the cylindrical shell of described shell (1), be provided with along the through hole (11) of the radial penetration barrel of described cylindrical shell, in described through hole (11), be provided with described electrode, described electrode is positioned between described ejector pin (7) and described plunger (10);
Described electrode comprises positive electrode (8) and negative electrode (9), when plunger (10) positive electrode (8) and negative electrode (9) when electrode direction is moved and compress electrode are connected, when plunger (10) disconnection between positive electrode (8) and negative electrode (9) away from electrode and while unclamping electrode;
Described positive electrode (8) is connected with negative pole with the positive pole of described supply unit respectively with negative electrode (9);
Described supply unit is connected with described signal sending circuit, and the alerting signal of supply unit being sent by described signal sending circuit is transferred to signal receiving circuit;
Described signal receiving circuit is connected with described warning circuit, by signal receiving circuit, alerting signal is passed to warning circuit, by warning circuit, reports to the police.
2. transformer substation grounding wire pile crown device for warning looseness according to claim 1, is characterized in that, described mechanical hook-up also comprises insulation course (2); On the hole wall of described through hole (11), be provided with insulation course (2).
3. transformer substation grounding wire pile crown device for warning looseness according to claim 1, is characterized in that, described mechanical hook-up also comprises O-ring seal (6); Left end at described ejector pin (7) is arranged with O-ring seal (6); The left end of the cylindrical shell of described shell (1) is set to shoulder hole, and within described ejector pin (7) is stuck in described shoulder hole, the outer peripheral face of described O-ring seal (6) matches with the inner peripheral surface of described shoulder hole.
4. transformer substation grounding wire pile crown device for warning looseness according to claim 1, is characterized in that, described mechanical hook-up also comprises set nut (4); In described set screw (5), be arranged with set nut (4), between described set nut (4) and described set screw (5), pass through threaded engagement.
5. transformer substation grounding wire pile crown device for warning looseness according to claim 1, is characterized in that, described signal sending circuit comprises triode Q1, diode D1～D2, relay J 1, wireless transmit chip U1, resistance R 1～R3 and coding integrated chip U2; The base stage of described triode Q1 is connected with described supply unit, the grounded emitter of described triode Q1, the collector of described triode Q1 is connected with the positive pole of described diode D1, the negative pole of described diode D1 is connected with power supply VCC, and the two ends of described relay J 1 are connected on the positive pole and negative pole of described diode D1; The negative pole of described diode D1 is connected with described wireless transmit chip U1 by K switch 1, on described wireless transmit chip U1, is connected with antenna A1;
Described wireless transmit chip U1 is connected with described coding integrated chip U2, and described diode D2, resistance R 1～R3 are connected between described wireless transmit chip U1 and described coding integrated chip U2.
6. transformer substation grounding wire pile crown device for warning looseness according to claim 1, is characterized in that, described signal receiving circuit comprises wireless receiving chip U3, resistance R 4～R5 and decoding integrated chip U4; Described wireless receiving chip U3 is upper is connected with antenna A2; Described wireless receiving chip U3 is connected with decoding integrated chip U4, and described resistance R 4～R5 is connected between described wireless receiving chip U3 and decoding integrated chip U4.
7. transformer substation grounding wire pile crown device for warning looseness according to claim 6, is characterized in that, described warning circuit comprises resistance R 6～R8, triode Q2, diode D3, relay J 2, LED, Music Clip U5 and loudspeaker U10; The base stage of described triode Q2 is connected with described decoding integrated chip U4 by described resistance R 6, the grounded emitter of described triode Q2, the collector of described triode Q2 is connected with the positive pole of described diode D3, the negative pole of described diode D3 is connected with power supply VCC, and the two ends of described relay J 2 are connected on the positive pole and negative pole of described diode D3;
The negative pole of described diode D2 is connected with K switch 2, and described resistance R 7 is all connected with described K switch 2 with resistance R 8; Described resistance R 7 is connected with described LED; Described resistance R 8 is connected with described Music Clip U5, and described Music Clip U5 is connected with loudspeaker U6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320681001.8U CN203503114U (en) | 2013-10-31 | 2013-10-31 | Device for alarming looseness of pile head of transformer station ground wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320681001.8U CN203503114U (en) | 2013-10-31 | 2013-10-31 | Device for alarming looseness of pile head of transformer station ground wire |
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| Publication Number | Publication Date |
|---|---|
| CN203503114U true CN203503114U (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320681001.8U Withdrawn - After Issue CN203503114U (en) | 2013-10-31 | 2013-10-31 | Device for alarming looseness of pile head of transformer station ground wire |
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| CN (1) | CN203503114U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103559770A (en) * | 2013-10-31 | 2014-02-05 | 国网安徽省电力公司淮南供电公司 | Transformer substation ground lead pile head loosening alarming device |
-
2013
- 2013-10-31 CN CN201320681001.8U patent/CN203503114U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103559770A (en) * | 2013-10-31 | 2014-02-05 | 国网安徽省电力公司淮南供电公司 | Transformer substation ground lead pile head loosening alarming device |
| CN103559770B (en) * | 2013-10-31 | 2016-05-04 | 国网安徽省电力公司淮南供电公司 | Transformer substation grounding wire pile crown device for warning looseness |
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| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140326 Effective date of abandoning: 20160504 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20140326 Effective date of abandoning: 20160504 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |