CN105784309B - Buchholz relay verifies auxiliary device - Google Patents
Buchholz relay verifies auxiliary device Download PDFInfo
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- CN105784309B CN105784309B CN201610176015.2A CN201610176015A CN105784309B CN 105784309 B CN105784309 B CN 105784309B CN 201610176015 A CN201610176015 A CN 201610176015A CN 105784309 B CN105784309 B CN 105784309B
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- distance rod
- buchholz relay
- riser
- microcontroller
- baffle
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- 230000000694 effects Effects 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 238000012360 testing method Methods 0.000 description 13
- 238000012795 verification Methods 0.000 description 9
- 230000009471 action Effects 0.000 description 7
- 230000006872 improvement Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012797 qualification Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses Buchholz relays to verify auxiliary device, belong to electrical equipment detection field, includes that the holder integral with Buchholz relay head cover and frame set, activity wear distance rod on the baffle for being connected on holder and acting on Buchholz relay, the pressure sensor that is arranged on distance rod and the hydraulic system in distance rod rear driving thrus bar are arranged；Digital display and microcontroller are fixed on the riser, pressure sensor is connect by signal wire with microcontroller, and the input terminal connection of microcontroller and digital display, microcontroller is also connect with hydraulic system.The present invention is by checking procedure full mechanization, the error for avoiding manual operation from bringing, and detection is easier and accurate.
Description
Technical field
The present invention relates to electrical equipment detection field, especially a kind of device of auxiliary examination Buchholz relay.
Background technology
Buchholz relay is applied to tranformer protection, and Buchholz relay generally comprises shell and the top for being fixed on shell upper end
Lid, on head cover setting be provided with the threaded hole of setting corresponding with the unthreaded hole on head cover on shell there are many mounting hole, head cover and
Shell is integral generally by being bolted.A frame is fixed on the lower face of Buchholz relay head cover, is cut with scissors on frame
Then a baffle, baffle is arranged in the situation lower baffle plate that do not stress with frame parallel, when Buchholz relay breaks down, is utilized
Power transformer interior fault and decompose and generate gas when causing oil flow surge, flow velocity reaches a certain level impulsion baffle, make gas after
Electric appliance acts, and connects specified control loop, acts on excision transformer and sends out signal.
Currently my company uses the WSJY-3 type gas-actuated relay calibration stands of Zhengzhou Sai Ao companies to carry out engineering gas relay
Device verify, WSJY-3 gas-actuated relay calibration stands using practical oil stream impact grave gas baffle, can physical simulation its really
Action state is a Buchholz relay test equipment approved in current industry.Specifically used method is：By Buchholz relay
It is connected at reserved port, so that a whole set of testing stand oil circuit is formed access, incrementally increase flow velocity, reach grave gas setting valve, make watt
This actuating of relay.Such as by the unqualified of test Buchholz relay, then need to dismantle screw（6）Buchholz relay is removed, into
Row definite value adjusts, after be reinstalled and detect again, and each Check-Out Time is all very long, until qualification.
Because testing principle needs, EMB-80 types Buchholz relay cannot carry out definite value adjustment in opening-wide state, and adjust manually
It is whole and without reference frame, therefore EMB-80 types Buchholz relay the case where being dismounted for multiple times adjusts frequent occurrence, the used time is examined every time
It is longer, the plenty of time is wasted, it is time-consuming and laborious.
Invention content
The technical problem to be solved in the invention is to provide a kind of Buchholz relay verification auxiliary device, and checking procedure is complete
Portion's mechanization, the error for avoiding manual operation from bringing, detection are easier and accurate.
In order to solve the above technical problems, the technical solution adopted in the present invention is：
Buchholz relay verifies auxiliary device, includes the holder integral with Buchholz relay head cover and frame set, activity
It wears the distance rod on the baffle for being connected on holder and acting on Buchholz relay, the pressure sensor being arranged on distance rod and sets
Set the hydraulic system in distance rod rear driving thrus bar；
The holder includes the riser and transverse slat of orthogonal setting, the riser and frame parallel, the transverse slat with watt
This relay head cover lower surface is parallel, and there are two matched fixed with the mounting hole on Buchholz relay head cover for the setting of riser top
Position column, riser is located by connecting by positioning column and Buchholz relay head cover, is provided with positioning groove I on the transverse slat, under frame
End, which is fixed in positioning groove I, realizes positioning；
The vertical activity of the distance rod, which is worn, to be connected on riser, and the distance rod is vertically arranged with baffle, distance rod front end
Opposite with baffle center, thrust rod rear end is connected with pressure sensor；
Digital display and microcontroller are fixed on the riser, pressure sensor is connect by signal wire with microcontroller,
The input terminal of microcontroller and digital display connects, and microcontroller is also connect with hydraulic system.
Technical solution of the present invention further improvement lies in that：One is also set up between the riser and frame to be fixed on transverse slat
Support plate, the support plate is arranged in parallel with riser, is additionally provided in support plate and the matched support of distance rod excircle
Hole.
Technical solution of the present invention further improvement lies in that：The support plate is separate structure, and support plate includes mutually cutting with scissors
The upper backup pad and lower supporting plate connect, upper backup pad lower end are provided with semicircle orifice, and lower supporting plate upper end is provided with semicircle orifice, upper branch
Fagging and lower supporting plate assemble latter two semicircle orifice and form the supported hole.
Technical solution of the present invention further improvement lies in that：The distance rod is connected through a screw thread with pressure sensor.
Technical solution of the present invention further improvement lies in that：The distance rod one end end opposite with baffle is spherical surface.
Technical solution of the present invention further improvement lies in that：The hydraulic system include by the hydraulic cylinder of piping connection and
Hydraulic pump, the hydraulic pump are connect with microcontroller.
By adopting the above-described technical solution, the technological progress that the present invention obtains is：
Buchholz relay verifies auxiliary device and passes through the head cover and frame composition one on holder and script Buchholz relay
Firm structure, wears on holder and connects the distance rod that rear end carries pressure sensor, and hydraulic system, holder is arranged in distance rod rear
On also set up digital display and microcontroller, the binding post of two p-wires and Buchholz relay is used when testing Buchholz relay
Connection, the p-wire other end connect with microcontroller, and microcontroller can detect the action situation of Buchholz relay, connect power supply with
MCU driving hydraulic system action afterwards pushes distance rod, and baffle, pressure sensor senses hydraulic system are withstood in distance rod head
The pressure that is applied on distance rod simultaneously transmits a signal to microcontroller, when baffle acted under the thrust of distance rod and with gas after
The magnetic force contact of electric appliance, Buchholz relay action, microcontroller show the pressure value of pressure sensor at this time at this time
Onto digital display.Whole process full mechanization, the error for avoiding manual operation from bringing, detection are easier and accurate.
Holder includes mutually perpendicular transverse slat and riser, and the setting of riser top is provided on level board there are two positioning column
Positioning groove I, it is only necessary to by two positioning columns on riser top when the head cover and frame of holder and Buchholz relay are assembled
The mounting hole on Buchholz relay head cover is stretched into, then the frame lower end of Buchholz relay is stretched into the positioning groove I on transverse slat
Assembling can be completed, assembling is rapid, improves detection efficiency.
The vertical activity of distance rod, which is worn, to be connected in the jack hole opened up on riser, riser and frame parallel, therefore ensure that
Distance rod is vertically arranged with the baffle being hinged on frame, it is ensured that the accuracy of test.
A support plate is also set up between riser and frame, is avoided the moving line of distance rod from glancing off, is ensured to push away
The vertical relation of power bar and baffle, it is ensured that the accuracy of test.Support plate is separate structure, support plate include be hinged it is upper
Support plate and lower supporting plate so that distance rod can be more convenient is mounted in support plate.
Distance rod is connected through a screw thread with pressure sensor, is replaced after distance rod or pressure sensor damage more square
Just, it is also more convenient and to store in the disassembled condition, and the pressure being more suitable for can be replaced according to the change of test pressure
Force snesor expands the scope of application of the present apparatus.
The distance rod one end end opposite with baffle is spherical surface, is occurred between the mobile distance rod and baffle of baffle
Slight relative displacement, spherical surface make the two relative displacement more smooth, and distance rod will not follow gear because of the inclination of baffle
Plate converts original movement locus, and to push away with plane contact pattern in constantly inclined spherical surface in the process in baffle plane
Power bar has gentler transition to the force of baffle, can be more nearly in actual use oil stream to the impact feelings of baffle
Condition.
Its action is made to distance rod force using hydraulic system, oil stream is directly impacted during capable of being more nearly practical work
The state of baffle, while hydraulic system force is more uniform, the unstable caused test for reducing motor or manually exerting a force misses
Difference.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the A of Fig. 1 to sectional view；
Fig. 3 is the structural schematic diagram of holder；
Fig. 4 is top plate schematic top plan view；
Fig. 5 is supporting plate structure schematic diagram；
Fig. 6 is the structural schematic diagram of support plate another kind state；
Wherein, 1, head cover, 2, frame, 3, baffle, 4, distance rod, 5, riser, 6, transverse slat, 7, mounting hole, 8, positioning column, 9,
Positioning groove I, 10, pressure sensor, 11, digital display, 12, microcontroller, 13, support plate, 13-1, upper backup pad, 13-2,
Lower supporting plate, 14, supported hole, 15, hydraulic cylinder, 16, hydraulic pump, 17, magnetic force contact, 18, jack hole, 19, positioning groove II.
Specific implementation mode
The present invention is described in further details with reference to embodiment：
As shown in figures 1 to 6, Buchholz relay verification auxiliary device includes the hydraulic pressure of holder, distance rod 4 and driving thrus bar 4
System, holder form a firm entirety with Buchholz relay head cover 1 and frame 2, and holder includes the perpendicular of orthogonal setting
Plate 5 and transverse slat 6, riser 5 is parallel with frame 2, and transverse slat 6 is parallel with 1 lower surface of Buchholz relay head cover, and 5 top of riser is provided with
Two cylindrical positioning columns 8, positioning column 8 are matched with the mounting hole 7 on Buchholz relay head cover 1, and riser 5 passes through positioning column
8 are located by connecting with Buchholz relay head cover 1.Positioning groove I 9 is provided on transverse slat 6,2 lower end of frame is fixed on positioning groove I 9
Middle realization positioning.The jack hole 18 opened up on riser 5, jack hole 18 is opposite with 3 center of baffle, and 4 activity of distance rod, which wears to be connected on, wears
It connects in hole 18, distance rod 4 is vertically arranged with riser 5, and 4 front end of distance rod is opposite with 3 center of baffle, and distance rod 4 is opposite with baffle 3
One end end be spherical surface, distance rod 4 is vertically arranged with baffle 3, and 4 rear end of distance rod is provided with pressure sensor 10, distance rod 4
It is connected through a screw thread integrally with pressure sensor 10.
Digital display 11 and microcontroller 12 are fixed on riser 5, pressure sensor 10 passes through signal wire and microcontroller 12
Connection, microcontroller 12 are connect with the input terminal of digital display 11, and microcontroller 12 is also connect with hydraulic system, and hydraulic system includes
Hydraulic cylinder 15 and hydraulic pump 16, hydraulic pump 16 are connect with microcontroller 12.When testing Buchholz relay using two p-wires with watt
The binding post of this relay connects, and the p-wire other end is connect with microcontroller 12, and microcontroller 12 can detect Buchholz relay
Action situation, connection power supply after microcontroller 12 control hydraulic pump 16 so that the telescopic rod of hydraulic cylinder 15 act, telescopic rod promotion
Baffle 3 is withstood on distance rod 4,4 head of distance rod, and pressure sensor 10 transmits a signal to microcontroller 12, when baffle 3 is in distance rod
It acts under 4 thrust and is contacted with the magnetic force contact 17 of Buchholz relay, Buchholz relay acts at this time, and microcontroller 12 will at this time
The pressure value of pressure sensor 10 be shown on digital display 11.Whole process full mechanization, avoids manual operation
The error brought, detection are easier and accurate.
A support plate 13 can also be arranged in the present apparatus between riser 5 and frame 2, and one and riser 5 are opened up on transverse slat 6
Support plate 13 is mounted in positioning groove II 19 and realizes fixation by parallel positioning groove II 19, and support plate 13 is kept with riser 5
It is parallel, it is additionally provided in support plate 13 and the matched supported hole 14 of 4 excircle of distance rod, supported hole 14 and 18 phase of jack hole
Right, distance rod 4 avoids the moving line of distance rod 4 from glancing off under the dual guiding role of supported hole 14 and jack hole 18,
Ensure the vertical relation of distance rod 4 and baffle 3, it is ensured that the accuracy of test.
Support plate 13 is also designed to separate structure, and support plate 13 includes the upper backup pad 13-1 being hinged and lower branch
The lower end fagging 13-2, upper backup pad 13-1 is provided with semicircle orifice, and the upper ends lower supporting plate 13-2 are provided with semicircle orifice, upper backup pad
13-1 and lower supporting plate 13-2 assembles latter two semicircle orifice and forms supported hole 14.
Buchholz relay checking procedure：
By taking EMB-80 type Buchholz relays as an example,
A looks for same model Buchholz relay first to make accurate 1.3m/s working values（It generally uses, as example）, then
It uses the present apparatus to test its baffle to record as a reference value with thrust magnitude when magnetic force contact；
B, it would be desirable to the shell and head cover 1 of the Buchholz relay of verification are dismantled, by the holder of this verification auxiliary device with watt
The head cover 1 of this relay is mounted to an entirety；
C is connected to power supply, and controlling hydraulic pump 16 by microcontroller 12 starts, and the action of 16 driving hydraulic cylinder 15 of hydraulic pump pushes
Distance rod 4 simulates impact of the practical oil stream to baffle 3；
D, the contact magnetic force contact 17 after hinge joint rotation under the promotion of distance rod 4 of baffle 3, microcontroller 12 detect watt
By 10 signal processing of pressure sensor and include 11 on digital display, by numerical value and a reference value ratio after this actuating of relay
Compared with detecting whether qualification, numerical value is qualified then to install Buchholz relay within error range；
E installs Buchholz relay and Buchholz relay is put into the progress of WSJY-3 type gas-actuated relay calibration stands again later
Engineering Buchholz relay verifies.
Buchholz relay first is verified with Buchholz relay, is put into again on the mash gas relay tester of profession after verification is qualified
Verification, qualified chance can reach 95 or more percent, be tested if directly Buchholz relay is put on tester, false
As unqualified, because testing principle needs, prevent it from carrying out definite value adjustment in opening-wide state, and manually adjust without refer to according to
According to then needing to dismantle screw（6）Remove Buchholz relay, carry out definite value adjustment, after be reinstalled and detect again, until
Until qualification, because relay adjustment is pretty troublesome, phenomenon is repeatedly adjusted frequent occurrence, wastes the plenty of time, reduce verification efficiency.
A simple initial survey is first carried out using this verification auxiliary device, detection time efficiency improves very much, and Yuanping City uses
When 60 minutes, now only need 20 minutes；Precision increases, and former set error range ± 10% is can be controlled in now within ± 5%；
Greatly reduce WSJY-3 type gas-actuated relay calibration stand access times, extends its service life.
If of less demanding to checking precision simultaneously, hydraulic system can be removed, push distance rod 4 can also be complete manually
At verification.If detected simultaneously, environment is limited to remove microcontroller 12, by pressure sensor 10 and digital display 11
Connection, the pressure value of 11 real-time display pressure sensor 10 of digital display changes riser 5 and support plate 13 into transparent panel, complete
It is recorded according to operating personnel's observation, when baffle 3 is contacted with magnetic force contact 17 just by records of values, is examined compared with a reference value entirely
Whether survey qualified.
Claims (2)
1. Buchholz relay verifies auxiliary device, it is characterised in that：Including with Buchholz relay head cover（1）And frame（2）Composition
The baffle for being connected on holder and acting on Buchholz relay is worn in the holder of one, activity（3）On distance rod（4）, setting pushing away
Power bar（4）On pressure sensor（10）With setting in distance rod（4）Rear driving thrus bar（4）Hydraulic system；
The holder includes the riser of orthogonal setting（5）And transverse slat（6）, the riser（5）With frame（2）It is parallel, it is described
Transverse slat（6）With Buchholz relay head cover（1）Lower surface is parallel, riser（5）There are two top settings and Buchholz relay head cover（1）
On mounting hole（7）Matched positioning column（8）, riser（5）Pass through positioning column（8）With Buchholz relay head cover（1）Positioning connects
It connects, the transverse slat（6）On be provided with positioning groove I（9）, frame（2）Lower end is fixed on positioning groove I（9）Middle realization positioning；
The distance rod（4）Vertical activity, which is worn, is connected on riser（5）On, the distance rod（4）With baffle（3）It is vertically arranged, pushes away
Power bar（4）Front end and baffle（3）Center is opposite, distance rod（4）Rear end is connected with pressure sensor（10）；
The riser（5）On be fixed with digital display（11）And microcontroller（12）, pressure sensor（10）By signal wire with
Microcontroller（12）Connection, microcontroller（12）With digital display（11）Input terminal connection, microcontroller（12）Also with hydraulic system
Connection；
The riser（5）And frame（2）Between also set up one and be fixed on transverse slat（6）On support plate（13）, the support plate
（13）With riser（5）It is arranged in parallel, support plate（13）On be additionally provided with and distance rod（4）The matched supported hole of excircle
（14）；
The support plate（13）For separate structure, support plate（13）Including the upper backup pad being hinged（13-1）And lower supporting plate
（13-2）, upper backup pad（13-1）Lower end is provided with semicircle orifice, lower supporting plate（13-2）Upper end is provided with semicircle orifice, upper backup pad
（13-1）And lower supporting plate（13-2）It assembles latter two semicircle orifice and forms the supported hole（14）；
The distance rod（4）With pressure sensor（10）It is connected through a screw thread；
The distance rod（4）With baffle（3）Opposite one end end is spherical surface.
2. Buchholz relay according to claim 1 verifies auxiliary device, it is characterised in that：The hydraulic system includes logical
Cross the hydraulic cylinder of piping connection（15）And hydraulic pump（16）, the hydraulic pump（16）With microcontroller（12）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610176015.2A CN105784309B (en) | 2016-03-25 | 2016-03-25 | Buchholz relay verifies auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610176015.2A CN105784309B (en) | 2016-03-25 | 2016-03-25 | Buchholz relay verifies auxiliary device |
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| Publication Number | Publication Date |
|---|---|
| CN105784309A CN105784309A (en) | 2016-07-20 |
| CN105784309B true CN105784309B (en) | 2018-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610176015.2A Active CN105784309B (en) | 2016-03-25 | 2016-03-25 | Buchholz relay verifies auxiliary device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2645218Y (en) * | 2003-08-31 | 2004-09-29 | 白伟义 | Mash gas relay tester |
| CN2755767Y (en) * | 2004-12-25 | 2006-02-01 | 白伟义 | Checker of gas relay |
| CN202453468U (en) * | 2012-01-11 | 2012-09-26 | 邢台兴力集团有限公司 | Checking device for gas relay |
| CN205538191U (en) * | 2016-03-25 | 2016-08-31 | 国家电网公司 | Buchholz relay check -up auxiliary device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07325003A (en) * | 1994-05-31 | 1995-12-12 | Meidensha Corp | Check device of impact gas pressure relay |
-
2016
- 2016-03-25 CN CN201610176015.2A patent/CN105784309B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2645218Y (en) * | 2003-08-31 | 2004-09-29 | 白伟义 | Mash gas relay tester |
| CN2755767Y (en) * | 2004-12-25 | 2006-02-01 | 白伟义 | Checker of gas relay |
| CN202453468U (en) * | 2012-01-11 | 2012-09-26 | 邢台兴力集团有限公司 | Checking device for gas relay |
| CN205538191U (en) * | 2016-03-25 | 2016-08-31 | 国家电网公司 | Buchholz relay check -up auxiliary device |
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| Publication number | Publication date |
|---|---|
| CN105784309A (en) | 2016-07-20 |
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