CN206638776U - Zero resistance insulator detects instrument - Google Patents

Zero resistance insulator detects instrument Download PDF

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Publication number
CN206638776U
CN206638776U CN201720439349.4U CN201720439349U CN206638776U CN 206638776 U CN206638776 U CN 206638776U CN 201720439349 U CN201720439349 U CN 201720439349U CN 206638776 U CN206638776 U CN 206638776U
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CN
China
Prior art keywords
lead
insulating bar
electric discharge
metal contact
insulator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201720439349.4U
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Chinese (zh)
Inventor
毕盛伟
于金亮
高兴琳
尹磊
段磊
孙华忠
张凯
李金宝
刘五超
王杰
刘炳仁
李国强
马献辉
于欣
杨栋
张金良
吴冰
刘其博
王路
辛洪杰
邵明波
乔丕凡
辛庚鑫
张兆慧
徐鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Weifang Power Supply Co of State Grid Shandong Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Weifang Power Supply Co of State Grid Shandong Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, Weifang Power Supply Co of State Grid Shandong Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201720439349.4U priority Critical patent/CN206638776U/en
Application granted granted Critical
Publication of CN206638776U publication Critical patent/CN206638776U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

It the utility model is related to a kind of zero resistance insulator detection instrument, its two metal contact for including insulating bar and being arranged at the top of insulating bar, two electric discharge probes and Acoustooptic indicator, Acoustooptic indicator is connected between one of metal contact and electric discharge probe, a lead is hinged with the top of insulating bar, metal contact is towards the open elastic clip in side, two metal contacts are connected to the side of lead by a support arm respectively, two support arms are inclined upwardly setting, wherein a support arm is fixed in the top of lead, another support arm is slidably connected on lead and positioned by retaining mechanism;Electric discharge probe and Acoustooptic indicator are arranged at the top of lead;The top ends of lead are hinged with camera by support, and the bottom of insulating bar is provided with the display screen electrically connected with camera.The utility model has the advantages of simple in construction, manipulation is flexible and detects accurately and reliably.

Description

Zero resistance insulator detects instrument
Technical field
Isolator detecting field is the utility model is related to, specifically a kind of zero resistance insulator detection instrument.
Background technology
Electric transmission line isolator is primarily used to support wire and is allowed to straight with shaft tower insulation, the quality of its insulating properties Connect the safe operation for being related to circuit.Zero resistance insulator refers to that the resistance value between insulator both ends steel cap and steel pin is less than regulation Value, it is faulty insulator.Because insulator uses out of doors, in the environmental attack effect and long-term such as drench with rain of exposing to the weather Under high pressure effect, the part porcelain vase of insulator is easily damaged, and causes part porcelain vase to lose insulation effect, if changed not in time, Then whole insulator can be caused to lose insulation function, cause security incident.
In order to ensure power supply safety, it is necessary to carry out live detection to the insulator under use state, live detection can be Carried out in the case of circuit normal operation, can guarantee that electric power non-interruptible supply.The principle of live detection insulator is:Good is exhausted Voltage difference between edge steel cap and steel pin be present, inferior insulator both end voltage difference reduces or is zero.Judge by the principle The good and bad degree of insulator.
The live detection instrument used at present mainly acts on insulator both end voltage difference on small the air gap, if empty The breakdown discharging sound that can send " whip " in gas gap, it was demonstrated that it is good that insulator both ends have a voltage difference insulating properties, if air The not breakdown then discharge off sound in gap, then prove insulator dielectric performance degradation.This kind of instrument is simply by the sound for listening electric discharge To judge, it is vulnerable to the influence of external environment, needs to be repeatedly detected confirmation sometimes, operating efficiency is low, meanwhile, such as ambient noise It is larger, difficult judgment can be caused.
Patent No. " 201520486877.6 ", entitled " a kind of spark gap detector " utility model patent in A kind of instrument that can be used for detecting zero resistance insulator is disclosed, the detector installs two metal contacts on insulated substrate, Metal contact be respectively used to contact insulator steel cap and steel pin, also set up on insulated substrate two respectively with two metal contacts The electric discharge probe of electrical connection, two electric discharge probes between discharging gap is set.Discharging gap is equivalent to a switch, if insulator Insulating properties are good, then voltage difference be present between steel cap and steel pin, and the voltage difference is enough to puncture discharging gap, now i.e. suitable Closed in switch, circuit turn-on after switch closure, the Acoustooptic indicator work in circuit, send sound and light signal.It can be seen that the detection Device specially sets the Acoustooptic indicator with acousto-optic warning function, does not spend and listens discharging sound, the reliability and accuracy of judgement are equal It increased.But in concrete operations, also there is following defect in the detector:1)Insulator is layered for multiple umbellate form porcelain vases The structure of arrangement, last layer steel pin are blocked with the position that next layer of steel cap is connected by the porcelain vase of umbrella, and therefore, metal contact needs Tilting insertion could contact with the steel cap and steel pin of correspondence position, because the width of insulated substrate is certain, although two metals touch Head can use the structure of rotational installation, and still, under the limitation of insulator layer structure, the distance between two metal contacts can The space very little of adjustment, it is also easy to contact by mistake with adjacent porcelain vase during adjustment, influences testing result, therefore, the detector is only It can be detected for a kind of insulator of model, versatility is poor;2)Metal contact uses the structure of probe-type, in contact steel When pin or steel cap, easily there is loose contact, cause detection structure unreliable;3)During detection, staff holds insulating bar Bottom, and a whole set of structure on insulated substrate and insulated substrate is respectively positioned on insulating bar top, when the length of insulating bar is longer, Staff can not accurately be operated, and false touch easily occurs and touches accident, potential safety hazard be present.
Utility model content
The technical problems to be solved in the utility model be to provide it is a kind of it is simple in construction, manipulation is flexible, detection accurately may be used The zero resistance insulator detection instrument leaned on.
In order to solve the above technical problems, zero resistance insulator detection kit of the present utility model includes insulating bar and is arranged on Two metal contacts, two electric discharge probes and Acoustooptic indicator at the top of insulating bar, two metal contacts are discharged with two respectively Probe is electrically connected, and the needle point of two electric discharge probes is oppositely arranged and discharging gap is formed between needle point, and Acoustooptic indicator is connected to Between one of metal contact and electric discharge probe, it, which is structurally characterized in that at the top of the insulating bar, is hinged with a lead, Metal contact is to be connected to the one of lead by a support arm respectively towards the open elastic clip in side, two metal contacts Side, two support arms are inclined upwardly setting, wherein a support arm is fixed in the top of lead, another support arm is slidably connected at Positioned on lead and by retaining mechanism;Electric discharge probe and Acoustooptic indicator are arranged at the top of lead;The top of lead End is hinged with camera by support, and the bottom of insulating bar is provided with the display screen electrically connected with camera.
Using said structure, on the basis of existing detector, the concrete structure and its mounting structure of metal contact are entered Row improves:1)Metal contact uses the structure of elastic clip, can be contacted with the steel cap or steel pin of insulator more abundant, ensures to be electrically connected The reliability connect, so as to increase the reliability of testing result;2)Metal contact is installed by support arm, and support arm is set using being inclined upwardly The structure put, the bottom of umbrella porcelain vase can be more easily stretched into, so as to effectively avoid false touch from touching phenomenon;3)A wherein branch Arm is using the structure that is slidably installed so that the spacing between two metal contacts can be adjusted flexibly, adapt to various shapes and The porcelain vase of size.In addition to that mentioned above, also set camera, bottom that display screen is set at top, gathered in real time by camera Image information at the insulator of top, and show that operating personnel can accurately be grasped at a distance with apparent on a display screen Make.
Branch arm body of the support arm including the setting that is inclined upwardly and the extension arm for being hinged on branch arm body top ends, metal Contact is arranged on the overhanging end of extension arm.Support arm uses the structure that two parts are hinged, can by adjusting two-part hinge angle With the position of more flexible adjustment metal contact, so as to be further ensured that metal contact can fully contact with steel cap or steel pin, and More effectively false touch can be avoided to touch.
The top ends of the branch arm body are provided with the illuminating lamp set outwardly.Set illuminating lamp can be to the steel pin of insulator It is illuminated with steel caps position, ensures that the image of camera collection is apparent, be further ensured that the accuracy of operation.
Sliding sleeve is slidably fitted with the lead, underlying support arm is slidably mounted on lead by sliding sleeve, The locking positioning mechanism includes the clamping screw being arranged on sliding sleeve.The knot that is slidably installed coordinated using sliding sleeve and clamping screw Structure, it is simple in construction, it is easy to operate.
Box body is installed, electric discharge probe and Acoustooptic indicator are installed in box body, and acousto-optic refers at the top of the lead Show that device includes light emitting diode, buzzer, commutation diode, divider resistance and current-limiting resistance, divider resistance and current-limiting resistance string Be associated between metal contact and electric discharge probe, buzzer it is in parallel with light emitting diode afterwards again with series point of commutation diode Branch line, branched line are connected in parallel on the both ends of divider resistance;Buzzer and light emitting diode are arranged in the side wall of box body.It is above-mentioned In structure, metal contact, electric discharge probe and Acoustooptic indicator composition series circuit, discharging gap are equivalent to one and switched, two Metal contact contacts with the steel cap and steel pin of insulator respectively, if insulator dielectric is functional, is deposited between steel cap and steel pin In voltage difference, the voltage difference is enough to puncture discharging gap, now that is, switch closure, electric current by Acoustooptic indicator, Voltage difference at current-limiting resistance both ends reaches the rated operational voltage of light emitting diode and buzzer, and Acoustooptic indicator is worked Send sound and light signal;If insulator dielectric performance degradation, the voltage difference between steel cap and steel pin reduces, when this voltage difference deficiency During so that spark gap puncturing, equivalent to switching off, then Acoustooptic indicator does not work.Between the sub- steel cap of good insulation and steel pin Voltage difference be generally far larger than the rated operational voltage of light emitting diode and buzzer, partial pressure electricity is designed in Acoustooptic indicator Resistance have the function that partial pressure and avoid because voltage is excessive and caused by indicator damage, while current-limiting resistance is set and avoids passing through finger Show that the electric current of device is excessive;Light emitting diode and buzzer rated voltage typically require to be direct current, design rectification two in circuit Pole pipe and reach the purpose by AC rectification into direct current.Box body is set to be played a protective role to the circuit structure of inside, Buzzer and light emitting diode are arranged in the side wall of box body, facilitate personal observations.
The bottom of the insulating bar connects a support block by universal joint, and being connected with support block can tie in operator The waistband of member's waist.Waistband is set to be used to borrow power to support, personnel can support the weight of whole detector by the strength of waist, Especially in the case where insulation pole length is longer, operation can be more convenient.
In summary, the utility model has the advantages of simple in construction, manipulation is flexible and detects accurately and reliably.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is circuit principle structure schematic diagram of the present utility model.
Embodiment
Referring to the drawings, zero resistance insulator detection kit of the present utility model includes insulating bar 1 and is arranged on insulating bar 1 and pushes up Two metal contacts 2, two electric discharge probes 3 and the Acoustooptic indicators in portion, two metal contacts 2 respectively with two electric discharge probes 3 Electrical connection, the needle point of two electric discharge probes 3 are oppositely arranged and discharging gap are formed between needle point, and Acoustooptic indicator connects wherein Between one metal contact 2 and electric discharge probe 3, the top of insulating bar 1 is hinged with a lead 4, and metal contact 2 is towards one The open elastic clip in side, two metal contacts 2 are connected to the side of lead 4 by a support arm 5 respectively, and two support arms 5 are equal Be inclined upwardly setting, wherein a support arm 5 is fixed in the top of lead 4, another support arm 5 is slidably connected on lead 4 And positioned by retaining mechanism;Electric discharge probe 3 and Acoustooptic indicator are arranged at the top of lead 4;The top ends of lead 4 are led to Cross support and be hinged with camera 6, the bottom of insulating bar 1 is provided with the display screen 7 electrically connected with camera 6.
In said structure, on the basis of existing detector, concrete structure and its mounting structure to metal contact 2 are carried out Improve, be embodied in following several respects:1)Metal contact uses the structure of elastic clip, can be with the steel cap or steel pin of insulator Contact is more abundant, ensures the reliability of electrical connection, so as to increase the reliability of testing result;2)Metal contact 2 is pacified by support arm 5 Dress, support arm 5 use the structure for the setting that is inclined upwardly, and the bottom of umbrella porcelain vase can be more easily stretched into, so as to effectively avoid Phenomenon is touched in false touch;3)Wherein support arm 5 is using the structure being slidably installed so that spacing between two metal contacts 2 can be with It is adjusted flexibly, adapts to the porcelain vase of a variety of shapes and sizes.In addition to that mentioned above, also camera 6, bottom is set to set at top Display screen 7, pass through the image information at the insulator of collection top, and being shown on display screen 7, operating personnel in real time of camera 6 Remote-controlled operation can be accurately carried out with apparent.
Referring to the drawings, support arm 5 include be inclined upwardly setting branch arm body 51 and be hinged on the top ends of branch arm body 51 Extension arm 52, metal contact 2 are arranged on the overhanging end of extension arm 52.The structure that support arm 5 is hinged using two parts, pass through regulation two Partial hinge angle, can be with the position of more flexible adjustment metal contact 2, so as to be further ensured that the energy of metal contact 2 and steel Cap or steel pin fully contact, and more effectively false touch can be avoided to touch.
Referring to the drawings, the top ends of branch arm body 51 are provided with the illuminating lamp 8 set outwardly.Set illuminating lamp 8 can be to exhausted The steel pin of edge and steel caps position are illuminated, and are ensured that the image of camera collection is apparent, are further ensured that the accurate of operation Property.
Referring to the drawings, sliding sleeve 9 is slidably fitted with lead 4, underlying support arm 5 is slidably mounted on by sliding sleeve 9 On lead 4, locking positioning mechanism includes the clamping screw 10 being arranged on sliding sleeve 9.Coordinated using sliding sleeve 9 and clamping screw 10 The structure that is slidably installed, it is simple in construction, it is easy to operate.
Referring to the drawings, the top of lead 4 is provided with box body 11, and electric discharge probe 3 and Acoustooptic indicator are installed in box body In 11, Acoustooptic indicator includes light emitting diode 12, buzzer 13, commutation diode 14, divider resistance 15 and current-limiting resistance 16, Divider resistance 15 and current-limiting resistance 16 are connected between metal contact 2 and electric discharge probe 3, and buzzer 13 and light emitting diode 12 are simultaneously The both ends of divider resistance 15 are connected in parallel on after connection with 14 branched line in series of commutation diode, branched line again;Buzzer 13 and light emitting diode 12 be arranged on box body 11 side wall on.In said structure, metal contact 2, electric discharge probe 3 and acousto-optic instruction Device forms series circuit, and discharging gap is equivalent to a switch 31, two metal contacts 2 steel cap and steel pin with insulator respectively , if insulator dielectric is functional, voltage difference be present between steel cap and steel pin, the voltage difference is enough to hit discharging gap in contact Wear, now that is, the closure of switch 31, for electric current by Acoustooptic indicator, the voltage difference at the both ends of current-limiting resistance 16 reaches luminous The rated operational voltage of diode 12 and buzzer 13, and Acoustooptic indicator work is sent sound and light signal;If insulator dielectric Performance degradation, then the voltage difference reduction between steel cap and steel pin, when this voltage difference is insufficient to allow spark gap to puncture, equivalent to Switch 31 disconnects, then Acoustooptic indicator does not work.Voltage difference between the sub- steel cap of good insulation and steel pin is generally far larger than sent out The rated operational voltage of optical diode and buzzer, design divider resistance has the function that partial pressure and avoided in Acoustooptic indicator Because voltage is excessive and caused by indicator damage, while the electric current for setting current-limiting resistance 16 and avoiding passing through indicator is excessive;It is luminous It is direct current that diode 12 and the rated voltage of buzzer 13, which typically require, in circuit design commutation diode 14 and reaching to hand over Electric rectification is flowed into the purpose of direct current.Foregoing circuit structure is prior art, is not being repeated again.In the utility model, Electric discharge probe 3 and Acoustooptic indicator are arranged in box body 11, box body 11 can play a protective role to the circuit structure of inside, honeybee Ring device 13 and light emitting diode 12 are arranged in the side wall of box body 11, facilitate personal observations.
Referring to the drawings, the bottom of insulating bar 1 connects a support block 17 by universal joint, is connected with and can tie in support block 17 It is tied to the waistband 18 of operating personnel's waist.Waistband 18 is set to be used to borrow power to support, personnel can support whole by the strength of waist The weight of individual detector, insulating bar 1 is the structure of length adjustable, in the case where the length of insulating bar 4 is longer, sets waistband energy More convenient operation, reduces labor intensity.
In summary, the utility model is not limited to above-mentioned embodiment.Those skilled in the art, this reality is not being departed from On the premise of with new spirit and scope, some change and modification can be done.The scope of protection of the utility model should be with this reality It is defined with new claim.

Claims (6)

1. a kind of zero resistance insulator detects instrument, including insulating bar(1)And it is arranged on insulating bar(1)Two metals at top touch Head(2), two pieces electric discharge probes(3)And Acoustooptic indicator, two metal contacts(2)Respectively with two electric discharge probes(3)Electrical connection, Two electric discharge probes(3)Needle point be oppositely arranged and discharging gap formed between needle point, Acoustooptic indicator is connected to one of them Metal contact(2)With the probe that discharges(3)Between, it is characterized in that the insulating bar(1)Top be hinged with a lead(4), Metal contact(2)For towards the open elastic clip in side, two metal contacts(2)Pass through a support arm respectively(5)It is connected to and leads Xiang Zhu(4)Side, two support arms(5)Be inclined upwardly setting, wherein a support arm(5)It is fixed in lead(4)Top, Another support arm(5)It is slidably connected at lead(4)Above and by retaining mechanism position;The electric discharge probe(3)Indicated with acousto-optic Device is arranged at lead(4)Top;Lead(4)Top ends camera is hinged with by support(6), insulating bar(1) Bottom be provided with and camera(6)The display screen of electrical connection(7).
2. zero resistance insulator as claimed in claim 1 detects instrument, it is characterized in that the support arm(5)Set including being inclined upwardly Branch arm body(51)Be hinged on branch arm body(51)The extension arm of top ends(52), metal contact(2)Installed in extension arm (52)Overhanging end.
3. zero resistance insulator as claimed in claim 2 detects instrument, it is characterized in that the branch arm body(51)Top ends peace Equipped with the illuminating lamp set outwardly(8).
4. zero resistance insulator as claimed in claim 1 detects instrument, it is characterized in that the lead(4)On be slidably fitted with cunning Set(9), underlying support arm(5)Pass through sliding sleeve(9)It is slidably mounted on lead(4)On, the locking positioning mechanism includes Installed in sliding sleeve(9)On clamping screw(10).
5. zero resistance insulator as claimed in claim 1 detects instrument, it is characterized in that the lead(4)Top box is installed Body(11), discharge probe(3)Box body is installed in Acoustooptic indicator(11)Interior, Acoustooptic indicator includes light emitting diode (12), buzzer(13), commutation diode(14), divider resistance(15)And current-limiting resistance(16), divider resistance(15)With current limliting Resistance(16)It is connected on metal contact(2)With electric discharge probe(3)Between, buzzer(13)With light emitting diode(12)After parallel connection Again with commutation diode(14)Branched line in series, branched line are connected in parallel on divider resistance(15)Both ends;Buzzer (13)And light emitting diode(12)Installed in box body(11)Side wall on.
6. zero resistance insulator as claimed in claim 1 detects instrument, it is characterized in that the insulating bar(1)Bottom pass through it is universal Section one support block of connection(17), support block(17)On be connected with the waistband that can be tied in operating personnel's waist(18).
CN201720439349.4U 2017-04-25 2017-04-25 Zero resistance insulator detects instrument Expired - Fee Related CN206638776U (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108107330A (en) * 2017-12-14 2018-06-01 国网重庆市电力公司电力科学研究院 A kind of insulator leakage current and zero-value detection device
CN108646155A (en) * 2018-07-18 2018-10-12 国网河南省电力公司南阳供电公司 A kind of Portable combined insulator hydrophobic system safety testing device
CN109470924A (en) * 2018-11-26 2019-03-15 浙江宝利特新能源股份有限公司 A kind of photovoltaic back film resistance tester
CN111965429A (en) * 2020-08-24 2020-11-20 中国南方电网有限责任公司超高压输电公司广州局 Auxiliary device for quickly detecting insulation resistance of ceramic insulator
CN112269108A (en) * 2020-09-23 2021-01-26 国网山东省电力公司潍坊供电公司 Electronic insulation zero detection rod
CN112290241A (en) * 2020-10-16 2021-01-29 广西电网有限责任公司贵港供电局 Earth connection indicating device of adjustable installation
CN112834874A (en) * 2020-12-31 2021-05-25 国网山西省电力公司晋中供电公司 Intelligent spark gap detector capable of automatically adsorbing and adjusting discharge gap
CN113125834A (en) * 2021-03-17 2021-07-16 广西电网有限责任公司电力科学研究院 Porcelain insulator voltage detection flexible device
CN114910760A (en) * 2022-06-14 2022-08-16 国网山东省电力公司高唐县供电公司 Automatic zero detection adjusting device for insulator of power transmission line
CN117970060A (en) * 2023-12-01 2024-05-03 杭州明韵科技有限公司 Zero value detection creeping robot for insulator string

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108107330A (en) * 2017-12-14 2018-06-01 国网重庆市电力公司电力科学研究院 A kind of insulator leakage current and zero-value detection device
CN108646155A (en) * 2018-07-18 2018-10-12 国网河南省电力公司南阳供电公司 A kind of Portable combined insulator hydrophobic system safety testing device
CN109470924B (en) * 2018-11-26 2024-06-11 浙江宝利特新能源股份有限公司 Photovoltaic back film resistance tester
CN109470924A (en) * 2018-11-26 2019-03-15 浙江宝利特新能源股份有限公司 A kind of photovoltaic back film resistance tester
CN111965429A (en) * 2020-08-24 2020-11-20 中国南方电网有限责任公司超高压输电公司广州局 Auxiliary device for quickly detecting insulation resistance of ceramic insulator
CN112269108A (en) * 2020-09-23 2021-01-26 国网山东省电力公司潍坊供电公司 Electronic insulation zero detection rod
CN112290241A (en) * 2020-10-16 2021-01-29 广西电网有限责任公司贵港供电局 Earth connection indicating device of adjustable installation
CN112834874A (en) * 2020-12-31 2021-05-25 国网山西省电力公司晋中供电公司 Intelligent spark gap detector capable of automatically adsorbing and adjusting discharge gap
CN112834874B (en) * 2020-12-31 2022-11-25 国网山西省电力公司晋中供电公司 Intelligent spark gap detector capable of automatically adsorbing and adjusting discharge gap
CN113125834B (en) * 2021-03-17 2023-06-02 广西电网有限责任公司电力科学研究院 Porcelain insulator voltage detection flexible device
CN113125834A (en) * 2021-03-17 2021-07-16 广西电网有限责任公司电力科学研究院 Porcelain insulator voltage detection flexible device
CN114910760A (en) * 2022-06-14 2022-08-16 国网山东省电力公司高唐县供电公司 Automatic zero detection adjusting device for insulator of power transmission line
CN114910760B (en) * 2022-06-14 2023-08-25 国网山东省电力公司高唐县供电公司 Automatic zero-detection adjusting device for insulator of power transmission line
CN117970060A (en) * 2023-12-01 2024-05-03 杭州明韵科技有限公司 Zero value detection creeping robot for insulator string

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