CN106409573B - Double-column horizontal folding disconnecting switch in-site installation detection method based on dynamometry contact - Google Patents
Double-column horizontal folding disconnecting switch in-site installation detection method based on dynamometry contact Download PDFInfo
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- CN106409573B CN106409573B CN201610883089.XA CN201610883089A CN106409573B CN 106409573 B CN106409573 B CN 106409573B CN 201610883089 A CN201610883089 A CN 201610883089A CN 106409573 B CN106409573 B CN 106409573B
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- 238000009434 installation Methods 0.000 title claims abstract description 27
- 238000001514 detection method Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 11
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 24
- 230000007704 transition Effects 0.000 claims description 21
- 238000004458 analytical method Methods 0.000 abstract description 9
- 230000008859 change Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 235000010894 Artemisia argyi Nutrition 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 244000030166 artemisia Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/0062—Testing or measuring non-electrical properties of switches, e.g. contact velocity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a kind of double-column horizontal folding disconnecting switch in-site installation detection methods based on dynamometry contact.Disconnecting switch in-site installation detection at present lacks certain data guidance, and mostly by virtue of experience, the difference of assembling will bury many hidden danger.The technical solution adopted by the present invention includes the following steps：The contact carried with dynamometry contact replacement double-column horizontal folding disconnecting switch, makes dynamometry contact be mounted on conducting rod；Single-phase switching debugging；Close closing position detection；Clamping force judges；Switching process sensing finger pressure detects；Three-phase synchronism detects.The installation of dynamometry contact of the present invention is replaced very convenient, the variation of the power during switching can be read, rather than just the clamping force measured after closing a floodgate, in-place closing, clamping force, switching process contact sensing finger pressure and the analysis of fingertip deflection and the analysis of three-phase switching synchronism can be carried out.
Description
Technical field
The present invention relates to the installation detection of outdoor disconnector, specifically a kind of double-column horizontals based on dynamometry contact
Folding disconnecting switch in-site installation detection method.
Background technology
As shown in Figure 1, the contact body 6 of GW4 type disconnecting switch is connected by bolt with conducting rod 11, contact 10 passes through spiral shell
Bolt 9 is fixed in contact body 6.7 both sides of fingertip are compressed by compression spring 8, and when contact 10 stretches into fingertip 7, the way of contact connects for line
It touches, compression spring 8 will generate clamping force.During different corners, contact working condition is mainly closed completely, not completely closed and separation
Three kinds of states.
Contact pressure is the important indicator of disconnecting switch quality.Disconnecting switch is chronically exposed in air, service condition ratio
Relatively severe, due to factors such as atmospheric corrosion and fevers, contact pressure spring can gradually fail, and cause subtracting for contact between contact
It is small, it can if things go on like this lead to loose contact or even can generate heat to burn out.
Some patents are applied in clamping force between moving contact and fixed contact of isolating switch context of detection at present, as Jiangsu state Chinese mugwort is electrical
A kind of device for pressure measurement (patent publication No. CN 102564670A) of Co., Ltd's design, clamping force is driven by pull rod
Measuring rod is acted between contact gap, the readout value from pressure gauge.Dalian high voltage isolator Electrical Appliances Co., Ltd designs
Pressure-detecting device (patent publication No. CN 103557981A), the pressure transmission that will be generated between contact using lever rule
Onto standard spring, and by the detection pressure between dial and pointer reading contact；It but also can be by changing the scale heart (fulcrum)
Position change the no-load voltage ratio of torque, so as to changing detection range.The pressure inspection of Ningbo Yaohua Electric Technology Co., Ltd.
Device (patent publication No. CN105067174A) is surveyed, by setting a simulation static contact, and the mode for sticking foil gauge is come
Detect clamping force；This mode cannot be detected directly on the contact after assembling, and be needed when disassembling or is unassembled
It could detect.Clamping force detector (the patent publication No. CN of Pinggao Electric Co., Ltd., Henan's design
101710010B), there is provided clamping force in various degree under three indicator lights carry out no qualification in intuitive judgment clamping force, and nothing
Method obtains specific value.
Make a general survey of current related patents, it can be seen that mostly using detection device, stretch into contact gap and measurement is gone to obtain
Clamping force, shortcoming mainly have：
1) all it is clamping force of the detection contact when being closed completely, can not detects the change of sensing finger pressure during switching
Change situation.And sensing finger pressure is clearly changed with the variation of corner during switching, this point is for monitoring
Isolation switch contact fingertip is critically important either with or without problem during switching, and sensing finger pressure, which crosses conference, causes switching difficult,
Additional stress is generated to porcelain vase, fingertip deforms the problems such as exceeded.
2) it takes and manually measures mostly, from Fig. 1 it is not difficult to find that position of the contact when being closed is in a certain certain bits
It puts, contact position is deeper, spring force is also bigger, measures the clamping force for hardly resulting in contact in the specific position by hand
Value.
For these reasons, the detection of disconnecting switch in-site installation lacks certain data guidance, mostly by virtue of experience, assembling
Difference will bury many hidden danger.Therefore, design one kind can either monitor the variation of switching process sensing finger pressure, and can be accurate
The in-site installation detection method of original closed position fingertip clamping force is obtained with regard to necessary.It on this basis, just can be by this
Method judges the installation quality of disconnecting switch.
Invention content
The technical problems to be solved by the invention are to overcome the problems of the above-mentioned prior art, are provided a kind of based on dynamometry
The double-column horizontal folding disconnecting switch in-site installation detection method of contact, can carry out in-place closing, clamping force, switching mistake
Journey contact sensing finger pressure and fingertip deflection analysis and three-phase switching synchronism analysis, with carry out the judgement of installation quality and
The installation site of disconnecting switch is adjusted, improves the installation quality of disconnecting switch.
For this purpose, the present invention adopts the following technical scheme that：Double-column horizontal folding disconnecting switch scene based on dynamometry contact
Detection method is installed, its step are as follows：
1) contact carried with dynamometry contact replacement double-column horizontal folding disconnecting switch, makes dynamometry contact be mounted on conducting rod
On；The dynamometry contact includes pedestal, which is internally provided with a force snesor that can be moved left and right, and the both sides of pedestal are each
Equipped with a transition seat, be fixedly connected with a contact head on the lateral wall of the transition seat, the left and right side of force snesor respectively with two mistakes
It crosses seat to be fixedly connected, between transition seat and pedestal existing makes the gap that transition seat can move left and right；
2) single-phase switching debugging；
3) closing position detection is closed：Conducting rod center line in both sides needs point-blank after combined floodgate, and observation, which is closed a floodgate, to be completed
Gap on dynamometry contact between transition seat and pedestal afterwards, if two side clearances of pedestal exist, in-place closing；Otherwise it closes a floodgate
It is out of alignment, the length of connecting rod is adjusted, until closing position is correct；
4) clamping force judges：After closing position is correct, the power that dynamometry contact measures is clamping force, and clamping force is not met will
The depth that contact is inserted into fingertip is adjusted when asking, until meeting the requirements；
5) switching process sensing finger pressure detects：Even if ensure that the accurate of closing position, can also go out during switching
The problem of existing sensing finger pressure is excessive during switching, the power of dynamometry contact is recorded by TT＆C system to obtain fingertip maximum
Pressure；If unilateral stress is excessive, then the length of connecting rod is adjusted；
6) three-phase synchronism detects：Dynamometry contact is replaced on threephase switch, then three-phase switching moves, and obtains simultaneously
The pressure data on three-phase is taken, by the start time and terminal of three-phase power, evaluates three-phase synchronism.
In the present invention, clamping force is a whether qualified important indicator of disconnecting switch.
The present invention is based on mechanical analyses, continuous observation are carried out to the power during contact probe abutment, according to the number of mechanics
According to the adjustment for the judgement, then adapting device for carrying out installation quality, assembling is made to be carried out towards optimization direction.
Further, in step 3), closing position is judged by the contact stress after combined floodgate, contact stress, which is more than, normally nibbles
The power of conjunction illustrates closing position not just.
Further, in step 5), fingertip deflection, calculation formula are calculated by the power obtained on dynamometry contact
For h=KF,
Wherein：H is the displacement of contact probe abutment point, and F is the power (i.e. contact stress) obtained on dynamometry contact, and K is is
Number.
Further, the length for adjusting connecting rod includes the adjusting of crossbar length adjustment or/and driven connecting lever length.
Further, the signal of the force snesor is obtained by data acquisition card, and is passed through and shown that equipment is presented.
It is the device have the advantages that as follows：The installation replacement of dynamometry contact is very convenient, can read in switching
The variation of power in the process rather than just the clamping force measured after closing a floodgate, can carry out in-place closing, clamping force, switching mistake
Journey contact sensing finger pressure and the analysis of fingertip deflection and the analysis of three-phase switching synchronism, the installation detection for disconnecting switch from now on
Provide guidance.
Description of the drawings
Fig. 1 is existing GW4 types isolation switch contact finger locations relational graph.
Fig. 2 is the structure diagram of dynamometry contact of the present invention.
Schematic diagram when Fig. 3 is mounting blocks installation in the present invention.
Fig. 4 is the partial sectional view of dynamometry contact of the present invention.
Fig. 5 is the flow chart of the present invention.
Fig. 6 is the single-phase layout drawing of disconnecting switch of the present invention.
Fig. 7 is the contact mechanics characteristic curve figure when present invention intersects pole length variation.
Fig. 8 is contact mechanics characteristic curve figure when the driven connecting lever length of the present invention changes.
Fig. 9 is contact fingertip force analysis figure of the present invention.
Figure 10 is fingertip deformation analysis figure of the present invention (position of A, B, C on fingertip is referring to Fig. 1 in figure).
In figure, 1- contact heads, 2- transition seats, 3- pedestals, 4- force snesors, mounting blocks in 5-, 6- contact bodies, 7- touches
Refer to, 8- leaf springs, 9- bolts, 10- contacts, 11- conducting rods, 12- through-holes, 13- mounting holes, 14- outlet holes, 15- shoulder blocks, 16- tune
Whole gasket, 17- power-driven mechanisms, the driven connecting levers of 18-, 19- crossbars, 20- contact fingertips.
Specific embodiment
Below in conjunction with specification drawings and specific embodiments, the invention will be further described.
Dynamometry contact as shown in Figure 2 is made of two contact heads, 1, two transition seat 2, pedestal 3 and force snesor 4.
Interior mounting blocks 5 are equipped in the rectangular through holes 12 at 6 top of contact body.Interior mounting blocks 5 are U-shaped, are stuck in outside rectangular through holes
On the thin-walled of side, as shown in Figure 3.Pedestal 3 is hollow structure, and is provided with mounting hole 13 at both ends and interior mounting blocks 5 pass through bolt
Connection.3 inside dress force snesor 4 of pedestal, only limits moving up and down for force snesor 4, does not limit and move left and right.Below mounting hole
Outlet hole 14 is provided with to draw the signal wire of force snesor 4.
The both sides of pedestal 3 are equipped with 1 each one piece of transition seat 2 and contact head, threaded hole are equipped among transition seat 2, using spiral shell
Bolt is directly connect with force snesor.Contact head 1 is then connect by the threaded hole at both ends with transition seat 2.Wherein, transition seat 2 with
After force snesor 4 connects, there are certain gap, a1 as shown in Figure 4, a2, b1, b2 with pedestal 3.Transition seat 2 passes through pedestal 3
Shoulder block 15 limits.Adjust pad 16 can be put according to actual size between contact head 1 and transition seat 2, ensure that dynamometry contact is whole
Width it is consistent with original contact.
As shown in figure 4, gap a1 is less than gap a2, a1=b1, a2=b2.By taking left side elder generation stress as an example, gap b1 at this time
0 is will be reduced to, and a2, still above 0, such force snesor just can measure the power suffered by left contact head, by the gear on the right side of pedestal
Shoulder provides reaction force, and gap a1, b1 are as small as possible to reduce the error of dynamometry.During switching, dynamometry contact measures
Power be always that power larger in the fingertip power of both sides.After in-place closing, both sides fingertip power is identical, and force snesor position will
Pedestal middle is automatically returned to, the power measured is clamping force.
In this way, the dynamometry contact can replace original contact and be mounted directly on conducting rod.Force sensor signals are then
It is obtained by data acquisition card, and passes through and show that equipment is presented.
The implementation process of the present invention is as follows：
1) as shown in fig. 6, disconnecting switch is opened by 17 contact fingertip 20 of operating mechanism, at this point, as shown in Figure 1,
Bolt 9 is removed, lays down contact 10, then dynamometry contact is installed, after installation is complete, restarting disconnecting switch carries out switching and moves
Make.
2) closing position detects.As shown in figure 4, the left and right sides of pedestal 3 of dynamometry contact is there are gap a1, b1, after combined floodgate
If two side clearances exist, it is possible to think in-place closing, otherwise need to adjust crossbar to control in-place closing.It or can be with
Judged by the power after combined floodgate, as shown in Figure 7,8, when crossbar 19 and 18 length of driven connecting lever generation deviation, can measured
Contact mechanical change situation.Power becomes larger after combined floodgate, is showing closing position not just, unilateral stress becomes larger.When this thing happens then
It needs to be adjusted to intersecting pole length, contact power is made to be restored to initial value after combined floodgate.
3) clamping force judges and switching process contact sensing finger pressure is analyzed.After closing position is correct, dynamometry contact is surveyed
To power be clamping force, be a whether qualified important indicator of disconnecting switch.If insufficient clamping force, can be touched by increasing
Head is inserted into fingertip depth to adjust, and ensure that the accurate of closing position.It is excessive also to will appear sensing finger pressure during switching
During switching, the power of dynamometry contact is recorded by TT＆C system for problem, with regard to that can obtain the variation of fingertip maximum pressure
Process.
In addition, the deflection of fingertip can be calculated by the power obtained on contact.As shown in figure 9, have
F2Cos θ=F1 (1)
Tan θ=f (2)
F2Cos (θ+γ)=F4 (3)
γ=alpha+beta (4)
It is obtained by formula (1)-(4)：
Wherein F1For sensing finger pressure, FfIt is fingertip to contact frictional force, F2For F1And FfResultant force.F3And F4Respectively F2Edge
Component on conducting rod axial direction and contact width direction, f are friction coefficient.As shown in Figure 10,
F5=khB (8)
It is obtained by (5)-(8)：
In formula：hB, hCThe deformation quantity generated at respectively contact point B, C.E is contact finger piece elasticity modulus of materials, and I is fingertip
Piece the moment of inertia, f are friction coefficient, and k is leaf spring stiffness coefficient, and L1 is the distance of piece spring contact B to leaf spring fixing end A, and L2 is tactile
The distance of head and fingertip contact point C to leaf spring fixed point A.
4) three-phase synchronism detects.Dynamometry contact is replaced on threephase switch, then three-phase switching moves, and obtains simultaneously
The pressure data on three-phase is taken, by the start time terminal of three-phase power, with regard to corresponding synchronism evaluation can be carried out.
Claims (8)
1. the double-column horizontal folding disconnecting switch in-site installation detection method based on dynamometry contact, its step are as follows：
1) contact carried with dynamometry contact replacement double-column horizontal folding disconnecting switch, makes dynamometry contact be mounted on conducting rod；
The dynamometry contact includes pedestal, which is internally provided with a force snesor that can be moved left and right, and the both sides of pedestal are respectively set
Have a transition seat, be fixedly connected with a contact head on the lateral wall of the transition seat, the left and right side of force snesor respectively with two transition
Seat is fixedly connected, and existing between transition seat and pedestal makes the gap that transition seat can move left and right；
2) single-phase switching debugging；
3) closing position detects：Conducting rod center line in both sides needs point-blank after combined floodgate, dynamometry after the completion of observation is closed a floodgate
Gap on contact between transition seat and pedestal, if two side clearances of pedestal exist, in-place closing；Otherwise closing position is not
Just, the length of connecting rod is adjusted, until closing position is correct；
4) clamping force judges：After closing position is correct, the power that dynamometry contact measures is clamping force, when clamping force is undesirable
The depth that contact is inserted into fingertip is adjusted, until meeting the requirements；
5) switching process sensing finger pressure detects：Even if ensure that the accurate of closing position, also will appear during switching tactile
The problem of finger pressure is excessive during switching, the power of dynamometry contact is recorded by TT＆C system to obtain fingertip maximum pressure；
If unilateral stress is excessive, then the length of connecting rod is adjusted；
6) three-phase synchronism detects：Dynamometry contact is replaced on threephase switch, then three-phase switching moves, while obtains three
Pressure data in phase by the start time and terminal of three-phase power, evaluates three-phase synchronism.
2. the double-column horizontal folding disconnecting switch in-site installation detection method according to claim 1 based on dynamometry contact,
It is characterized in that,
In step 3), closing position is judged by the contact stress after combined floodgate, contact stress is more than the power normally engaged, illustrates to close
Gate position is not just.
3. the double-column horizontal folding disconnecting switch in-site installation detection method according to claim 1 based on dynamometry contact,
It is characterized in that, in step 5), fingertip deflection is calculated by the power obtained on dynamometry contact.
4. the double-column horizontal folding disconnecting switch in-site installation detection method according to claim 1 based on dynamometry contact,
It is characterized in that, the signal of the force snesor is obtained by data acquisition card, and pass through and show that equipment is presented.
5. the double-column horizontal folding disconnecting switch in-site installation detection method according to claim 1 based on dynamometry contact,
It is characterized in that, the pedestal is connected to by mounting blocks in one in contact body, the interior mounting blocks are placed in contact master
In through-hole at the top of body, the ends of the end of pedestal and interior mounting blocks is using the Stud connection being placed in mounting hole, pedestal and interior
Mounting blocks are located at the both sides of contact body top surface respectively.
6. the double-column horizontal folding disconnecting switch in-site installation detection method according to claim 1 based on dynamometry contact,
It is characterized in that, being provided with the outlet hole of force snesor on the pedestal, the signal wire of force snesor is drawn by the outlet hole.
7. the double-column horizontal folding disconnecting switch in-site installation detection method according to claim 1 based on dynamometry contact,
It is characterized in that, the transition seat is limited by the shoulder block being located on pedestal.
8. the double-column horizontal folding disconnecting switch in-site installation detection method according to claim 1 based on dynamometry contact,
It is characterized in that, there is adjust pad between the contact head and transition seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610883089.XA CN106409573B (en) | 2016-10-08 | 2016-10-08 | Double-column horizontal folding disconnecting switch in-site installation detection method based on dynamometry contact |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610883089.XA CN106409573B (en) | 2016-10-08 | 2016-10-08 | Double-column horizontal folding disconnecting switch in-site installation detection method based on dynamometry contact |
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| Publication Number | Publication Date |
|---|---|
| CN106409573A CN106409573A (en) | 2017-02-15 |
| CN106409573B true CN106409573B (en) | 2018-07-10 |
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| CN201610883089.XA Active CN106409573B (en) | 2016-10-08 | 2016-10-08 | Double-column horizontal folding disconnecting switch in-site installation detection method based on dynamometry contact |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108346534B (en) * | 2018-02-24 | 2020-03-20 | 广州白云电器设备股份有限公司 | Method for designing connection parameters of operating mechanism and isolating switch of 10kV fixing cabinet |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2815489C2 (en) * | 1978-04-10 | 1983-12-29 | Jagenberg-Werke AG, 4000 Düsseldorf | Device for monitoring a cylinder-piston unit |
| CN101710010B (en) * | 2009-11-30 | 2011-06-01 | 河南平高电气股份有限公司 | Device for testing clamping force between moving contact and fixed contact of isolating switch |
| CN103217245B (en) * | 2013-03-27 | 2016-03-09 | 国家电网公司 | A kind of disconnector clamping force measurement mechanism |
| CN103557981A (en) * | 2013-11-11 | 2014-02-05 | 大连高压开关电器有限公司 | Device for detecting pressure between contacts of disconnecting switch |
| CN105067174B (en) * | 2015-07-29 | 2018-10-12 | 宁波耀华电气科技有限责任公司 | Isolation switch contact device for pressure measurement |
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