CN203838228U - Spherical voltage sensor - Google Patents

Spherical voltage sensor Download PDF

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Publication number
CN203838228U
CN203838228U CN201420270546.4U CN201420270546U CN203838228U CN 203838228 U CN203838228 U CN 203838228U CN 201420270546 U CN201420270546 U CN 201420270546U CN 203838228 U CN203838228 U CN 203838228U
Authority
CN
China
Prior art keywords
voltage sensor
spherical
resistance
manually wound
insulation
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
CN201420270546.4U
Other languages
Chinese (zh)
Inventor
梁基重
芦竹茂
张平
王志鹏
李艳鹏
俞华
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.)
Electric Power Research Institute of State Grid Shanxi Electric Power Co Ltd
Original Assignee
Electric Power Research Institute of State Grid Shanxi 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 Electric Power Research Institute of State Grid Shanxi Electric Power Co Ltd filed Critical Electric Power Research Institute of State Grid Shanxi Electric Power Co Ltd
Priority to CN201420270546.4U priority Critical patent/CN203838228U/en
Application granted granted Critical
Publication of CN203838228U publication Critical patent/CN203838228U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a spherical voltage sensor comprising a detachable flexible conducting sphere, a bearing, a connecting framework, a fixing member and a metal connecting member. The bearing penetrates through the flexible conducting sphere and then is electrically connected with the connecting framework. One end of the metal connecting member is electrically connected with the connecting framework via the fixing member. When the detachable flexible conducting sphere is extruded, the shape of the detachable flexible conducting sphere changes correspondingly. When the detachable flexible conducting sphere is extruded, resistance of the spherical sensor is maintained within resistance range of 0.1-50ohm. A problem that a fault point cannot be accurately positioned in an existing power generator hand-making-insulation-to-ground-potential test can be solved by the spherical voltage sensor.

Description

A kind of spherical voltage sensor
Technical field
The utility model relates to technical field of electricity, is specifically related to a kind of spherical voltage sensor.
Background technology
Generator is one of visual plant in electrical network, and its safe operation is being related to the safety of whole electrical network.Will carry out above earth potential test to generator manually wound insulation, it is to detect the insulation test method of manually wound insulation defect that existing current potential moves measuring technology outward, by detecting density and the relative dielectric strength of end manually wound insulation.It can make up the deficiency of the overhang insulation defect that the withstand voltage test of equipment AC and DC can't find; Can find lead-in wire bag defective insulation, coil nose insulating wrapping defect, insulation booth is filled mud and is filled discontentedly, and colligation is washed glass rope and is solidified the defects such as bad and the bad infiltration causing of end-fitting place stator hollow copper wire welding quality.But existing method of testing can not accurately be located trouble spot.
Utility model content
For the deficiencies in the prior art, the utility model provides a kind of spherical voltage sensor, can not accurately locate the problem of trouble spot for solving existing generator manually wound insulation above earth potential test.
For achieving the above object, the utility model is achieved by the following technical programs:
A kind of spherical voltage sensor, comprise removable compliant conductive ball, bearing, connecting frame, fixture and metal connecting piece, wherein, bearing is electrically connected with connecting frame through after compliant conductive ball, and one end of metal connecting piece is electrically connected with connecting frame by fixture;
When described removable compliant conductive ball is squeezed, can there is respective change in its shape;
In the time that described removable compliant conductive ball is squeezed, the resistance of spherical sensor remains in the Standard resistance range in 0.1~50 Europe.
Wherein, the other end of described metal connecting piece utilizes bolt to be connected with outside other devices by screw thread.
Wherein, the diameter of described compliant conductive ball is within the scope of 1cm~10cm.
The utility model at least has following beneficial effect:
Spherical voltage sensor described in the utility model, can form above earth potential pick-up unit together with High-Voltage Insulation support bar, measuring resistance, reometer, be used for generator unit stator manually wound insulation end, comprise stator coil manually wound insulation end, high-voltage output end manually wound insulation, neutral terminal manually wound insulation, carry out trouble spot and accurately locate.Spherical voltage sensor described in the utility model, along with its shape generation respective change of the extruding being subject to, can meet under different test environments the accurately demand of location of trouble spot is carried out in generator unit stator manually wound insulation end.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is spherical voltage sensor structural representation in the utility model embodiment;
Fig. 2 is the structural representation to generator unit stator manually wound insulation end above earth potential pick-up unit in the utility model embodiment;
Fig. 3 is the schematic diagram carrying out in the utility model embodiment the detection of generator unit stator manually wound insulation end above earth potential;
In Fig. 1, removable compliant conductive ball 1, bearing 2, connecting frame 3, fixture 4 and metal connecting piece 5 and threaded hole 6;
In Fig. 2, spherical voltage sensor 1, bonding conductor 2, High-Voltage Insulation support bar 3, measuring resistance 4, voltage measurement display device 5 and earthed system 6;
In Fig. 3, manually wound insulation resistance 1, measuring resistance 2, milliammeter 3, sound-producing device 4 and earthed system 5.
Embodiment
For making object, technical scheme and the advantage of the utility model embodiment clearer, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is carried out to clear, complete description, obviously, described embodiment is the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Referring to Fig. 1, the utility model embodiment has proposed a kind of spherical voltage sensor, comprise removable compliant conductive ball 1, bearing 2, connecting frame 3, fixture 4 and metal connecting piece 5, wherein, bearing 2 is electrically connected with connecting frame 3 through compliant conductive ball 1 is rear, and one end of metal connecting piece 5 is electrically connected with connecting frame 3 by fixture 4;
Wherein, described compliant conductive ball is to adopt flexible conducting material to make, and this material satisfies condition: the first, and resistance value is little, with respect to the resistance of described measuring resistance, the voltage sensor resistance that this material is made is very little, and almost negligible, secondary sexual character is variable, in the time that it is subject to external force extruding, can there is respective change to adapt to the detection under different spaces condition in its shape, and too large variation can not occur resistance, generally can remain in certain Standard resistance range.
In the time that described removable compliant conductive ball is squeezed, the resistance of spherical sensor remains in the Standard resistance range in 0.1~50 Europe, thereby can not affect above earth potential test result.This Standard resistance range makes the making of compliant conductive plate easier, and the requirement of material is reduced.
Wherein, the other end of described metal connecting piece utilizes bolt to be connected with outside other devices by screw thread.
Wherein, the diameter of described removable compliant conductive ball is within the scope of 1cm~10cm.
Diameter can meet within the scope of this between the manually wound insulation of different generators end space different but while measuring sensor only measure and specify manually wound insulation and can not make the requirement being connected in series between manually wound insulation, within the scope of this, can meet the difform measurement requirement of different generators end manually wound insulation and measurement range requirement simultaneously.
In reality test, according to test needs, described spherical voltage sensor can be adjusted its parameter flexibly, for example, can change as required its diameter, to meet the requirement of different test environments.If such as wanting the accurate localization of faults, need constantly to change its diameter, make its contact range less, thereby obtain position of failure point more accurately.
Conducting sphere in described spherical voltage sensor is made by flexible material, it can meet the needs of different test environments, for example, while needing slit or position, arrowband to carry out fault detect, the compliant conductive ball that should be made by flexible material can meet this demand, because it can corresponding variation occur along with external force extruding.
Spherical voltage sensor described in the utility model embodiment, can form an above earth potential pick-up unit together with High-Voltage Insulation support bar, measuring resistance, reometer, be used for generator unit stator manually wound insulation end, comprise stator coil manually wound insulation end, high-voltage output end manually wound insulation, neutral terminal manually wound insulation, carry out trouble spot and accurately locate.Specifically, referring to Fig. 2, Fig. 2 is the above earth potential pick-up unit that utilizes spherical voltage sensor composition, comprising: spherical voltage sensor 1, metal bonding conductor 2, High-Voltage Insulation support bar 3, measuring resistance 4, voltage measurement display device 5 and earthed system 6.
Utilize said apparatus the accurate schematic diagram of locating in trouble spot to be carried out to as shown in Figure 3 in generator unit stator manually wound insulation end, manually wound insulation resistance 1, measuring resistance 2, milliammeter 3, sound-producing device 4 and earthed system 5.Wherein manually wound insulation resistance is generator unit stator manually wound insulation equivalent resistance, as good in manually wound insulation, and its resistance is much larger than measuring resistance resistance; If manually wound insulation punctures or defectiveness, its resistance declines and is even far smaller than measuring resistance with measuring resistance with the order of magnitude.Whether judge that whether generator unit stator manually wound insulation is good together with sounding according to the pointer of milliammeter is partially moving with generating means.Because described spherical voltage sensor forms contact point with contacting of generator unit stator manually wound insulation, therefore, utilize the above earth potential measurement mechanism that described spherical voltage sensor is installed can accurately locate trouble spot.
Spherical voltage sensor described in the utility model, can form above earth potential pick-up unit together with High-Voltage Insulation support bar, measuring resistance, reometer, be used for generator unit stator manually wound insulation end, comprise stator coil manually wound insulation end, high-voltage output end manually wound insulation, neutral terminal manually wound insulation, carry out trouble spot and accurately locate.Spherical voltage sensor described in the utility model, along with its shape generation respective change of the extruding being subject to, can meet under different test environments the accurately demand of location of trouble spot is carried out in generator unit stator manually wound insulation end.
Above embodiment only, for the technical solution of the utility model is described, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of the each embodiment technical scheme of the utility model.

Claims (3)

1. a spherical voltage sensor, it is characterized in that, comprise removable compliant conductive ball, bearing, connecting frame, fixture and metal connecting piece, wherein, bearing is electrically connected with connecting frame through after compliant conductive ball, and one end of metal connecting piece is electrically connected with connecting frame by fixture;
When described removable compliant conductive ball is squeezed, can there is respective change in its shape;
In the time that described removable compliant conductive ball is squeezed, the resistance of spherical sensor remains in the Standard resistance range in 0.1~50 Europe.
2. spherical voltage sensor according to claim 1, is characterized in that, the other end of described metal connecting piece utilizes bolt to be connected with outside other devices by screw thread.
3. spherical voltage sensor according to claim 1, is characterized in that, the diameter of described removable compliant conductive ball is within the scope of 1cm~10cm.
CN201420270546.4U 2014-05-23 2014-05-23 Spherical voltage sensor Expired - Fee Related CN203838228U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420270546.4U CN203838228U (en) 2014-05-23 2014-05-23 Spherical voltage sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420270546.4U CN203838228U (en) 2014-05-23 2014-05-23 Spherical voltage sensor

Publications (1)

Publication Number Publication Date
CN203838228U true CN203838228U (en) 2014-09-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420270546.4U Expired - Fee Related CN203838228U (en) 2014-05-23 2014-05-23 Spherical voltage sensor

Country Status (1)

Country Link
CN (1) CN203838228U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108627400A (en) * 2018-04-17 2018-10-09 国网山西省电力公司电力科学研究院 A kind of angle steel X-braced panels stability bearing capacity experimental rig and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108627400A (en) * 2018-04-17 2018-10-09 国网山西省电力公司电力科学研究院 A kind of angle steel X-braced panels stability bearing capacity experimental rig and method
CN108627400B (en) * 2018-04-17 2020-12-25 国网山西省电力公司电力科学研究院 Device and method for testing stable bearing capacity of angle steel crossed inclined material

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C14 Grant of patent or utility model
GR01 Patent grant
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: 20140917

Termination date: 20180523