CN206114274U - A device that is used for cubical switchboard generating line pile head to touch and indicates spring degradation capability test - Google Patents
A device that is used for cubical switchboard generating line pile head to touch and indicates spring degradation capability test Download PDFInfo
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- CN206114274U CN206114274U CN201621087677.4U CN201621087677U CN206114274U CN 206114274 U CN206114274 U CN 206114274U CN 201621087677 U CN201621087677 U CN 201621087677U CN 206114274 U CN206114274 U CN 206114274U
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Abstract
The utility model relates to a device that is used for cubical switchboard generating line pile head to touch and indicates spring degradation capability test, the cubical switchboard includes a plurality of moving contacts and static contact, and through the contact of moving contact and static contact and the switch of disconnection realization cubical switchboard, the top of moving contact is equipped with touches the finger, and indicate and static contact connecting through touching, the both ends of touching the finger all are equipped with many and touch the finger spring, the device is including the box, the setting is at the inside data processor of box, fix at the mounting panel on box upper portion and fix and put assorted test contact on the mounting panel and with movable contact head position, test contact's middle part is equipped with and is used for the test to touch the finger to the exert pressure pressure sensor of size of test contact, pressure sensor and data processor are connected. Compared with the prior art, the utility model discloses but greatly reduced takes place because of the trouble that detects the mistake and bring, and the device dismantles conveniently, is applicable to the cubical switchboard of different models.
Description
Technical field
This utility model is related to switch cubicle performance test field, and in particular to one kind is used for switch cabinet bus pile crown fingertip bullet
Spring deteriorates the device and method of performance test.
Background technology
Switch is most important control and protection equipment in power system, maintains the safe and stable operation of electrical network.By opening
Close failure and caused power grid accident mainly has two reasons：
1st, faults itself (such as insulating element is aging, part deformation or corrosion, arc extinguishing ability are reduced), countermeasure are switched
Mainly have：A, strengthen checking and accepting dynamics to new equipment, be rigid in checking up and the test data such as dispatch from the factory, join.B, in a planned way arrange equipment
Daily tour and interruption maintenance.
2nd, the connection exception of and between power system (such as bus) is switched, such as contact site occurs oxidation or loosens feelings
Condition, causes the position persistent fever under the function of current, finally burns out equipment.Once at a certain bus station.Switch cubicle occurs bright
Aobvious smog, and with discharging sound, equipment stops finding that vehicle type plug-in strip has a moving contact fingertip to come off after labour；Stationary contact head casing tube is
Scaling loss, cracking, and have serious carbonization phenomenon, find after analysis accident, and cause of accident is a certain on the upside of moving contact (or several
Root) spring is aging, causes elastic not enough or fracture, causes fingertip thrust uneven, and upper contact face contact resistance is excessive, long
The excessively thermally-induced scaling loss of rear contact that phase is through-flow, and cause epoxy bushing heated combustion and insulation breakdown.Therefore, for used by switch cubicle
Fingertip spring it is necessary to have more accurate degradation detection, especially with constantly putting into operation for current new transformer station, with
And the progressively transformation of old transformer station, the higher and higher present situation of cabinet-type equipment proportion in electrical network.
Can solve the problem that handcart-type switch moving contact contacts the detection of situation with bus static contact currently without reliable measure
Blind area, is generally only the quality for determining the resistance variations of moving contact and static contact between contact surface to judge fingertip spring performance.
But, operator has found, during using the method, high-quality fingertip spring and fingertip spring inferior cause moving contact and static contact connecing
Resistance variations between contacting surface are simultaneously less, it is impossible to qualitatively judge the good and bad performance of fingertip spring, cause detection error, it is possible to
Larger harm is brought in the later stage.
Utility model content
The purpose of this utility model be exactly the defect in order to overcome above-mentioned prior art to exist and provide a kind of simple structure,
Detection data is accurately used for the device and method that switch cabinet bus pile crown fingertip spring deteriorates performance test.
The purpose of this utility model can be achieved through the following technical solutions：One kind is used for switch cabinet bus pile crown fingertip
Spring deteriorates the device of performance test, and the switch cubicle includes multiple moving contacts and static contact, and by moving contact and static contact
Contact realize the switch of switch cubicle with disconnecting, the top of the moving contact is provided with fingertip, and by fingertip and the static contact
Connection, is equipped with many for banding fingertip and the fingertip spring of moving contact and static contact, described device on the outside of the fingertip
Including casing, be arranged on box house data processor, be fixed on top installing plate and it is fixed on a mounting board and with
The test contact that moving contact position matches, is provided with the middle part of the test contact and for testing fingertip test contact is applied to press
The pressure transducer of power size, the pressure transducer is connected with data processor.
This utility model replaces existing contact surface resistance test by stress test, the experiment proved that, is surveyed by pressure
Try to judge the deterioration performance of fingertip spring, up to more than 50%, this explanation can by pressure for optimum and most bad performance difference
Effectively to reflect the degradation of fingertip spring；And with it, can be by using the time to the bad of fingertip spring
Change degree does rough qualitative analyses.
The front-end and back-end of described test contact are cylindrical, and the diameter with diameter greater than rear end of front end, the pressure
Force transducer is attached to the rear end side wall of test contact, and is fixed pressure transducer by anchor ear.Due to anchor ear and pressure sensing
The very thin thickness of device, so will not impact to the pressure of fingertip spring, and is placed on anchor ear and test by pressure transducer
Between contact, it is ensured that pressure transducer is not destroyed.
Described pressure transducer is resistive pressure sensor.
The front end of described test contact is provided with chamfering, is easy in test contact insertion fingertip.
Multiple installing holes are evenly distributed with described installing plate, the rear end of the test contact is plugged in installing hole.
Such setting so that test contact easily can on a mounting board be installed and dismantled, for different moving contacts, it is only necessary to will survey
Examination contact is plugged in different installing holes so as to matched with moving contact, hence in so that this device is applied to different shaped
Number switch cubicle, it is applied widely.
The bottom of described casing is provided with pulley, and simulated field practical operation situation makes test data have more stability.
It is a kind of that the method that switch cabinet bus pile crown fingertip spring deteriorates performance test is carried out using device as described above, including
Following step：
(1) according to the position of fingertip to be measured on moving contact, test contact is plugged in the installing hole of installing plate, makes test
Contact matches with the finger locations on moving contact；
(2) pushing meanss, make test contact insert in fingertip to be measured, are read suffered by pressure transducer by data processor
Pressure value；
(3) step (2) gained pressure value is compared with reference value, judges that switch cabinet bus pile crown fingertip spring is deteriorated
Performance.
The reference value is obtained by the following method：
A () is arranged on the standard fingertip of same model on moving contact；
B () is plugged in test contact in the installing hole of installing plate according to the position of fingertip to be measured on moving contact, make test
Contact matches with standard finger locations；
C () pushing meanss, in making test contact insertion standard fingertip, extract one or more fingertip bullet on standard fingertip
Spring, the ginseng being by data processor reading pressure transducer pressure value when one or more fingertip spring is deteriorated completely
Examine value.
Compared with prior art, the beneficial effects of the utility model are embodied in following several respects：
(1) by the degradation of piezometry fingertip spring, accuracy is high, can the significantly relatively low band because detection is inaccurate
The failure come；
(2) simple structure, convenient disassembly is applicable to the switch cubicle of different model；
(3) quantitative detection data can not only be provided, moreover it is possible to as the foundation of qualitative forecasting.
Description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of this utility model test contact；
Connection diagram when Fig. 3 is test between moving contact, test contact, fingertip；
Fig. 4 is change curve of the switch cubicle fingertip spring pressure with service life.
Wherein, 1 is casing, and 2 is installing plate, and 3 is test contact, and 31 is resistive pressure sensor, and 32 is anchor ear, and 4 are
Data processor, 5 is installing hole, and 6 is pulley, and 7 is fingertip, and 71 is fingertip spring, and 8 is moving contact.
Specific embodiment
Embodiment of the present utility model is elaborated below, the present embodiment is with technical solutions of the utility model as front
Put and implemented, give detailed embodiment and specific operating process, but protection domain of the present utility model is not limited
In following embodiments.
Embodiment 1
It is a kind of for switch cabinet bus pile crown fingertip spring deteriorate performance test device, its structure as shown in figure 1, including
Casing 1, the data processor 4 being arranged on inside casing 1, the installing plate 2 for being fixed on the top of casing 1 and it is fixed on installing plate 2
Test contact 3 that is upper and matching with the position of moving contact 8, the middle part of test contact 3 is provided with for testing fingertip to test contact 3
Apply the pressure transducer 31 of pressure size, pressure transducer 31 is connected with data processor 4.It is evenly distributed with installing plate 2
Multiple installing holes 5, the rear end of test contact 3 is plugged in installing hole 5.Such setting so that test contact 3 can be convenient
Install on installing plate 2 and dismantle, for different moving contacts 8, it is only necessary to test contact 3 is plugged in different installing holes 5, is made
It matches with moving contact 8, hence in so that this device is applied to the switch cubicle of different model, it is applied widely.
The bottom of casing 1 is provided with pulley 6, and simulated field practical operation situation makes test data have more stability.
Wherein, the structure of test contact 3 is as shown in Fig. 2 the front-end and back-end of test contact 3 are cylindrical, and front end
With diameter greater than the diameter of rear end, resistive pressure sensor 31 is attached to the rear end side wall of test contact 3, and by anchor ear 32 by electricity
Resistance pressure transducer 31 is fixed.Due to anchor ear 32 and the very thin thickness of resistive pressure sensor 31, so will not be to fingertip
The pressure of spring is impacted, and pressure transducer 31 is placed between anchor ear 32 and test contact 3, it is ensured that pressure is passed
Sensor 31 is not destroyed.
The front end of test contact 3 is provided with chamfering, is easy in the insertion fingertip 7 of test contact 3.
Said apparatus are used for into switch cabinet bus pile crown fingertip spring and deteriorate performance test, comprised the following steps：
(1) according to the position of fingertip to be measured 7 on moving contact 8, test contact 3 is plugged in the installing hole 5 of installing plate 2,
Test contact 3 is set to match with the position of fingertip 7 on moving contact 8；
(2) pushing meanss, make test contact 3 insert in fingertip to be measured 7, respectively by 2 banding fingertips 7 of fingertip spring 71
With test contact 3 and moving contact 8, wherein, the fingertip spring 71 for banding test contact 3 is denoted as 1# springs and 2# springs, use
3# springs and 4# springs are denoted as in the fingertip spring 71 of banding moving contact, pressure transducer institute are read by data processor pressurized
Force value, wherein, moving contact, fingertip, test contact annexation it is as shown in Figure 3；The contact that the present embodiment is adopted is public for gloomy source
Department's 1250A Mume flower contacts.
(3) step (2) gained pressure value is compared with reference value, judges that switch cabinet bus pile crown fingertip spring is deteriorated
Performance.
Testing result is as shown in table 1：
The spring of table 1 deteriorates the performance test results
By test result it is found that when touch spring occurs the deterioration of most serious (as 1# or 2# lose completely bullet
Property), the pressure drop between monolithic Flos Mume fingertip and static contact is 50% or so of normal pressure, and its contact resistance only rises ten
Several micro-ohms, variable quantity is 20% or so, it is difficult to which effecting reaction goes out spring degradation.And pass through to measure contact pressure, can be with
Directly it is accurately obtained whether spring has deterioration condition.
After the making for completing contact pressure apparatus, utility model people combines the electricity trial work of each station 10kV switch maintenances
Make, carried out live actual test, the following is each switch cabinet contact spring pressure test data：
The VS1 switch testings of table 2：
| Switch names | Name of station | Date of putting into operation | Switch model | Pressure value (N) |
| 10 kilovolts of block switches | Safety sea trade switchyard | 2006-11-03 | VS1 | 55 |
| The yellow switch in 31 Kang Bi gardens | Feng Chengkangbi gardens switchyard | 2006-11-27 | VS1 | 56 |
| 35 remittance rainbow second phases yellow switch | The green remittance rainbow switchyard of gold | 2007-08-24 | VS1 | 55 |
| 25 remittance rainbow second phases red switch | The green remittance rainbow switchyard of gold | 2007-08-24 | VS1 | 56 |
| 34 agricultures pleasure switch | Leizhou switchyard | 2008-04-25 | VS1 | 58 |
| Even second is switched in 35 north | Leizhou switchyard | 2008-04-25 | VS1 | 57 |
| Bright 17 bright city first switch | Leizhou switchyard | 2008-04-25 | VS1 | 59 |
| Imperial first and second switch of 31 necks | The imperial switchyard of neck | 2010-12-10 | VS1 | 62 |
| Tree 22 tree creek first switch | The imperial switchyard of neck | 2010-12-10 0 | VS1 | 63 |
| Transport 75 canal second switches | The imperial switchyard of neck | 2010-12-10 | VS1 | 61 |
| 35 Xiao Nan second are switched | See residence of a high official switchyard | 2011-01-14 | VS1 | 64 |
| 24 backup circuit breakers | See residence of a high official switchyard | 2011-01-14 | VS1 | 63 |
| 23 see the first of the residence of a high official third switch | See residence of a high official switchyard | 2011-01-14 | VS1 | 64 |
The VD4 switch testings of table 3
By test, it has been found that sensor, can be accurately anti-in the way of quantifying by pressure size between measurement contact surface
The pressure condition of contact should be gone out, with the passage of the time of putting into operation, the situation of change of pressure value can effectively reflect the bad of touch spring
Change trend.
Data are accumulated by constantly test, the data base of switch cabinet contact spring pressure value is preliminarily formed, and analysis draws
Spring pressure value is as the curve of the time change that puts into operation is as shown in figure 1, from tracing analysiss, spring pressure is with the time of putting into operation
Growth and decay, and the curve can be used as the qualitative analyses of simple fingertip spring degradation.
Claims (6)
1. a kind of device that performance test is deteriorated for switch cabinet bus pile crown fingertip spring, the switch cubicle includes multiple dynamic touch
Head and static contact, and the switch of switch cubicle, the top of the moving contact are realized in the contact by moving contact and static contact with disconnection
Fingertip is provided with, and is connected with the static contact by fingertip, many are equipped with the outside of the fingertip is used for banding fingertip and moves
The fingertip spring of contact and static contact, it is characterised in that described device includes casing, is arranged on the data processing of box house
The test contact that device, the installing plate for being fixed on casing top and fixation match on a mounting board and with moving contact position, institute
State and be provided with the middle part of test contact for testing the pressure transducer that fingertip applies pressure size to test contact, the pressure is passed
Sensor is connected with data processor.
2. it is according to claim 1 it is a kind of for switch cabinet bus pile crown fingertip spring deteriorate performance test device, its
It is characterised by, the front-end and back-end of described test contact are cylindrical, and the diameter with diameter greater than rear end of front end, the pressure
Force transducer is attached to the rear end side wall of test contact, and is fixed pressure transducer by anchor ear.
3. it is according to claim 1 and 2 it is a kind of for switch cabinet bus pile crown fingertip spring deteriorate performance test device,
Characterized in that, described pressure transducer is resistive pressure sensor.
4. it is according to claim 1 it is a kind of for switch cabinet bus pile crown fingertip spring deteriorate performance test device, its
It is characterised by, the front end of described test contact is provided with chamfering.
5. it is according to claim 1 it is a kind of for switch cabinet bus pile crown fingertip spring deteriorate performance test device, its
It is characterised by, multiple installing holes are evenly distributed with described installing plate, and the rear end of the test contact is plugged in installing hole.
6. it is according to claim 1 it is a kind of for switch cabinet bus pile crown fingertip spring deteriorate performance test device, its
It is characterised by, the bottom of described casing is provided with pulley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621087677.4U CN206114274U (en) | 2016-09-27 | 2016-09-27 | A device that is used for cubical switchboard generating line pile head to touch and indicates spring degradation capability test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621087677.4U CN206114274U (en) | 2016-09-27 | 2016-09-27 | A device that is used for cubical switchboard generating line pile head to touch and indicates spring degradation capability test |
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| Publication Number | Publication Date |
|---|---|
| CN206114274U true CN206114274U (en) | 2017-04-19 |
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ID=58520897
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621087677.4U Active CN206114274U (en) | 2016-09-27 | 2016-09-27 | A device that is used for cubical switchboard generating line pile head to touch and indicates spring degradation capability test |
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| Country | Link |
|---|---|
| CN (1) | CN206114274U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404369A (en) * | 2016-09-27 | 2017-02-15 | 国网上海市电力公司 | Device and method for testing deterioration performance of bus pile head contact finger spring of switch cabinet |
| CN109900445A (en) * | 2019-03-29 | 2019-06-18 | 国网河南省电力公司电力科学研究院 | A kind of switchgear plum blossom fingertip holddown spring performance testing device |
-
2016
- 2016-09-27 CN CN201621087677.4U patent/CN206114274U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404369A (en) * | 2016-09-27 | 2017-02-15 | 国网上海市电力公司 | Device and method for testing deterioration performance of bus pile head contact finger spring of switch cabinet |
| CN106404369B (en) * | 2016-09-27 | 2019-03-12 | 国网上海市电力公司 | Device and method for the deterioration performance test of switch cabinet bus pile crown fingertip spring |
| CN109900445A (en) * | 2019-03-29 | 2019-06-18 | 国网河南省电力公司电力科学研究院 | A kind of switchgear plum blossom fingertip holddown spring performance testing device |
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