CN105784309A - Gas relay calibration assistance device - Google Patents
Gas relay calibration assistance device Download PDFInfo
- Publication number
- CN105784309A CN105784309A CN201610176015.2A CN201610176015A CN105784309A CN 105784309 A CN105784309 A CN 105784309A CN 201610176015 A CN201610176015 A CN 201610176015A CN 105784309 A CN105784309 A CN 105784309A
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- Prior art keywords
- distance rod
- buchholz relay
- riser
- chip microcomputer
- baffle plate
- Prior art date
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- 238000012795 verification Methods 0.000 claims description 19
- 230000000694 effects Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 9
- 238000001514 detection method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 230000009471 action Effects 0.000 description 13
- 238000012360 testing method Methods 0.000 description 12
- 230000006872 improvement Effects 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 239000002699 waste material Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 241000446313 Lamella Species 0.000 description 1
- 241000408521 Lucida Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a gas relay calibration assistance device, which belongs to the field of electrical device detection. The gas relay calibration assistance device comprises a support, a thrust rod, a pressure sensor and a hydraulic system, wherein the support, a gas relay top cover and a frame are integrated as a one; the thrust rod is arranged on the support in a movable and through mode and acts on a baffle of the gas relay; the pressure sensor is arranged on the thrust rod; and the hydraulic system is arranged behind the thrust rod for driving the thrust rod. A vertical plate is fixed with a digital display and a single chip microcomputer, the pressure sensor is connected with the single chip microcomputer via a signal line, the single chip microcomputer is connected with the input end of the digital display, and the single chip microcomputer is also connected with the hydraulic system. The whole calibration process is mechanical, errors brought by manual operation are avoided, and the detection is simpler, more convenient and more accurate.
Description
Technical field
The present invention relates to electrical equipment detection field, the device of especially a kind of auxiliary examination Buchholz relay.
Background technology
Buchholz relay is applied to tranformer protection; Buchholz relay generally comprises housing and is fixed on the top cover of housing upper end; being provided with many fixing holes on top cover, housing is provided with the screwed hole of setting corresponding with the unthreaded hole on top cover, top cover and housing link into an integrated entity generally by bolt.The lower surface of Buchholz relay top cover is fixed a framework, an articulated baffle plate on framework, baffle plate is arranged with frame parallel at the situation lower baffle plate that do not stress, when Buchholz relay breaks down, utilizing power transformer interior fault and decompose generation gas when causing oil flow surge, flow velocity reaches to a certain degree to get excited baffle plate, makes Buchholz relay action, connect the control loop specified, act on excision transformator and send signal.
Currently my company adopts the WSJY-3 type gas-actuated relay calibration stand of Zhengzhou Sai Ao company to carry out engineering Buchholz relay verification, WSJY-3 gas-actuated relay calibration stand adopts actual oil stream to impact grave gas baffle plate, can its real operating state of physical simulation, be a Buchholz relay test equipment of accreditation in current industry.Specifically used method is: Buchholz relay is connected to reserved port, makes a whole set of testing stand oil circuit form path, incrementally increases flow velocity, reach grave gas setting valve, make Buchholz relay action.Defective as through test Buchholz relay, then need to take screw (6) apart and pull down Buchholz relay, carry out definite value adjustment, after be reinstalled and again detect, and each Check-Out Time is all very long, until qualified.
Because Cleaning Principle needs, EMB-80 type Buchholz relay can not carry out definite value adjustment at opening-wide state, and manually adjusts without reference frame, therefore often there is the situation that being dismounted for multiple times adjusts in EMB-80 type Buchholz relay, the inspection used time is longer every time, wastes the plenty of time, wastes time and energy.
Summary of the invention
The technical issues that need to address of the present invention are to provide a kind of Buchholz relay verification auxiliary device, by checking procedure full mechanization, it is to avoid the error that manual operation brings, detect easier and accurate.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is:
Buchholz relay verification auxiliary device, including with Buchholz relay top cover and frame set all-in-one-piece support, activity cross-under on support and act on the distance rod on the baffle plate of Buchholz relay, the pressure transducer that is arranged on distance rod and be arranged on distance rod rear and drive the hydraulic system of distance rod；
Described support includes riser and the transverse slat of orthogonal setting, described riser and frame parallel, described transverse slat is parallel with Buchholz relay top cover lower surface, riser top is provided with two locating dowels matched with the fixing hole on Buchholz relay top cover, riser is located by connecting by locating dowel and Buchholz relay top cover, being provided with detent I on described transverse slat, framework lower end is fixed in detent I and realizes location；
The vertical activity cross-under of described distance rod is on riser, and described distance rod and baffle plate are vertically arranged, and distance rod front end is relative with baffle center, and distance rod rear end is connected to pressure transducer；
Being fixed with character display and single-chip microcomputer on described riser, pressure transducer is connected with single-chip microcomputer by holding wire, and single-chip microcomputer is connected with the input of character display, and single-chip microcomputer is also connected with hydraulic system.
Further improvement is that of technical solution of the present invention: also setting up a gripper shoe being fixed on transverse slat between described riser and framework, described gripper shoe and riser be arranged in parallel, and gripper shoe is additionally provided with the supported hole matched with distance rod excircle.
Further improvement is that of technical solution of the present invention: described gripper shoe is Split type structure, gripper shoe includes the upper backup pad and the lower supporting plate that are hinged, upper backup pad lower end is provided with semicircle orifice, lower supporting plate upper end is provided with semicircle orifice, upper backup pad and lower supporting plate and assembles latter two semicircle orifice and form described supported hole.
Further improvement is that of technical solution of the present invention: described distance rod and pressure transducer are threaded connection.
Further improvement is that of technical solution of the present invention: the end, one end that described distance rod is relative with baffle plate is sphere.
Further improvement is that of technical solution of the present invention: described hydraulic system includes the hydraulic cylinder and the hydraulic pump that are connected by pipeline, and described hydraulic pump is connected with single-chip microcomputer.
Owing to have employed technique scheme, the technological progress that the present invention obtains is:
nullBuchholz relay verification auxiliary device forms a firm structure by support with the top cover on Buchholz relay originally and framework，On support, cross-under rear end is with the distance rod of pressure transducer，Distance rod rear arranges hydraulic system，Support also sets up character display and single-chip microcomputer，Two p-wires are used to be connected with the binding post of Buchholz relay during test Buchholz relay，The p-wire other end is connected with single-chip microcomputer，Single-chip microcomputer can detect the action situation of Buchholz relay，After connecting power supply, Micro Controller Unit (MCU) driving hydraulic system action promotes distance rod，Distance rod head withstands baffle plate，Pressure sensor senses hydraulic system is applied to the pressure on distance rod and transmits a signal to single-chip microcomputer，When baffle plate action the magnetic force contact with Buchholz relay under the thrust of distance rod，Now Buchholz relay action，The pressure value of pressure transducer now is shown on character display by single-chip microcomputer.Whole process full mechanization, it is to avoid the error that manual operation brings, detects easier and accurate.
Support includes mutually perpendicular transverse slat and riser, riser top is provided with two locating dowels, horizontal plate is provided with detent I, need only to two locating dowels on riser top are stretched into the fixing hole on Buchholz relay top cover during by the top cover of support and Buchholz relay and frame assembled, again the framework lower end of Buchholz relay is stretched in the detent I on transverse slat and can complete to assemble, assemble rapidly, improve detection efficiency.
In the jack hole that the activity cross-under that distance rod is vertical is offered on riser, riser and frame parallel, thereby ensure that distance rod is vertically arranged with the baffle plate being hinged on framework, it is ensured that the accuracy of test.
A gripper shoe is also set up, it is to avoid the moving line of distance rod glances off, it is ensured that the vertical relation of distance rod and baffle plate, it is ensured that the accuracy of test between riser and framework.Gripper shoe is Split type structure, and gripper shoe includes the upper backup pad and the lower supporting plate that are hinged so that distance rod can convenient being arranged in gripper shoe.
Distance rod and pressure transducer are threaded connection, distance rod or pressure transducer are changed convenient after damaging, and it is also more convenient to receive in the disassembled condition, and the pressure transducer being more suitable for can be changed according to the change of test pressure, expand the scope of application of this device.
The end, one end that distance rod is relative with baffle plate is sphere, along with slight relative displacement occurs between mobile distance rod and the baffle plate of baffle plate, sphere makes both relative displacements more smooth and easy, distance rod will not be followed baffle plate and be converted original movement locus because of the inclination of baffle plate, and make distance rod that the force of baffle plate is had milder transition in baffle plane sphere and plane contact pattern in the process constantly tilted, can be more nearly in actually used process the oil stream impact condition to baffle plate.
Adopting hydraulic system that distance rod force is made its action, can be more nearly in practical work process oil and flow the state of direct impact baffle plate, hydraulic system force is more uniform simultaneously, reduces the unstable caused test error of motor or artificial force.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram；
Fig. 2 is that the A of Fig. 1 is to sectional view；
Fig. 3 is the structural representation of support；
Fig. 4 is top board schematic top plan view；
Fig. 5 is supporting plate structure schematic diagram；
Fig. 6 is the structural representation of gripper shoe another kind state；
Wherein, 1, top cover, 2, framework, 3, baffle plate, 4, distance rod, 5, riser, 6, transverse slat, 7, fixing hole, 8, locating dowel, 9, detent I, 10, pressure transducer, 11, character display, 12, single-chip microcomputer, 13, gripper shoe, 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, detent II.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further details:
As shown in figures 1 to 6, Buchholz relay verification auxiliary device includes support, distance rod 4 and drives the hydraulic system of distance rod 4, support and Buchholz relay top cover 1 and framework 2 form a firmly entirety, support includes riser 5 and the transverse slat 6 of orthogonal setting, riser 5 is parallel with framework 2, transverse slat 6 is parallel with Buchholz relay top cover 1 lower surface, riser 5 top is provided with two cylindrical locating dowels 8, locating dowel 8 matches with the fixing hole 7 on Buchholz relay top cover 1, and riser 5 is located by connecting by locating dowel 8 and Buchholz relay top cover 1.Being provided with detent I 9 on transverse slat 6, framework 2 lower end is fixed in detent I 9 and realizes location.The jack hole 18 offered on riser 5, jack hole 18 is relative with baffle plate 3 center, distance rod 4 activity cross-under is in jack hole 18, distance rod 4 and riser 5 are vertically arranged, distance rod 4 front end is relative with baffle plate 3 center, and the end, one end that distance rod 4 is relative with baffle plate 3 is sphere, and distance rod 4 and baffle plate 3 are vertically arranged, distance rod 4 rear end is provided with pressure transducer 10, and distance rod 4 and pressure transducer 10 are threaded connection integral.
Riser 5 is fixed with character display 11 and single-chip microcomputer 12, pressure transducer 10 is connected with single-chip microcomputer 12 by holding wire, single-chip microcomputer 12 is connected with the input of character display 11, single-chip microcomputer 12 is also connected with hydraulic system, hydraulic system includes hydraulic cylinder 15 and hydraulic pump 16, and hydraulic pump 16 is connected with single-chip microcomputer 12.Two p-wires are used to be connected with the binding post of Buchholz relay during test Buchholz relay, the p-wire other end is connected with single-chip microcomputer 12, single-chip microcomputer 12 can detect the action situation of Buchholz relay, connection power supply single-chip microcomputer 12 later controls hydraulic pump 16 makes the expansion link action of hydraulic cylinder 15, expansion link promotes distance rod 4, distance rod 4 head withstands baffle plate 3, pressure transducer 10 transmits a signal to single-chip microcomputer 12, when baffle plate 3 action contacting with the magnetic force contact 17 of Buchholz relay under the thrust of distance rod 4, now Buchholz relay action, the pressure value of pressure transducer 10 now is shown on character display 11 by single-chip microcomputer 12.Whole process full mechanization, it is to avoid the error that manual operation brings, detects easier and accurate.
This device can also arrange a gripper shoe 13 between riser 5 and framework 2, transverse slat 6 is offered a detent II 19 parallel with riser 5, gripper shoe 13 is arranged in detent II 19 and realizes fixing, gripper shoe 13 and riser 5 keeping parallelism, gripper shoe 13 is additionally provided with the supported hole 14 matched with distance rod 4 excircle, supported hole 14 is relative with jack hole 18, distance rod 4 avoids the moving line of distance rod 4 to glance off under the dual guide effect of supported hole 14 and jack hole 18, ensure the vertical relation of distance rod 4 and baffle plate 3, guarantee the accuracy of test.
Gripper shoe 13 is also designed to Split type structure, gripper shoe 13 includes the upper backup pad 13-1 and the lower supporting plate 13-2 that are hinged, 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 and assembles latter two semicircle orifice formation supported hole 14.
Buchholz relay checking procedure:
For EMB-80 type Buchholz relay,
A, looks for same model Buchholz relay first to make accurate 1.3m/s working value (commonly using, as example), then thrust magnitude record during with its baffle plate of this device to test and magnetic force contact is as reference value；
B, it would be desirable to housing and the top cover 1 of the Buchholz relay of verification are taken apart, and the top cover 1 of the support of this verification auxiliary device Yu Buchholz relay is mounted to an entirety；
C, connects power supply, controls hydraulic pump 16 by single-chip microcomputer 12 and start, and hydraulic pump 16 drives hydraulic cylinder 15 action to promote distance rod 4 to simulate the impact to baffle plate 3 of the actual oil stream；
D, baffle plate 3 contacts magnetic force contact 17 under the promotion of distance rod 4 after pin joint rotates, single-chip microcomputer 12 Buchholz relay action detected after by pressure transducer 10 signal processing and be shown on character display 11, numerical value is compared with reference value, it is qualified to detect whether, numerical value is within range of error and qualified is then installed by Buchholz relay；
E, is put into Buchholz relay WSJY-3 type gas-actuated relay calibration stand again after installing Buchholz relay and carries out engineering Buchholz relay verification.
First verify Buchholz relay with Buchholz relay, verify qualified after be put into again specialty mash gas relay tester on verification, qualified chance can arrive more than 95 percent, test if directly Buchholz relay is put on tester, if it is defective, because Cleaning Principle needs, make it can not carry out definite value adjustment at opening-wide state, and manually adjust without reference frame, then need to take screw (6) apart and pull down Buchholz relay, carry out definite value adjustment, after be reinstalled and again detect, until it is qualified, because relay adjusts pretty troublesome, frequent generation repeatedly adjusts phenomenon, the waste plenty of time, reduce verification efficiency.
Using this verification auxiliary device first to carry out a simple initial survey, detection time efficiency improves a lot, 60 minutes equal used times of Yuanping City, now only needs 20 minutes；Precision increases, former set error scope ± 10%, can be controlled in now ± 5% within；Greatly reduce WSJY-3 type gas-actuated relay calibration stand access times, extend its service life.
If simultaneously that checking precision is less demanding, it is possible to hydraulic system to be removed, manually promote distance rod 4 can also complete verification.If detected simultaneously, environment is limited can also be removed single-chip microcomputer 12, pressure transducer 10 is connected with character display 11, character display 11 shows the force value of pressure transducer 10 in real time, change riser 5 and gripper shoe 13 into lamella lucida, it is based entirely on operator and observes record, when baffle plate 3 contacts with magnetic force contact 17 just by records of values, compare with reference value detect whether qualified.
Claims (6)
1. Buchholz relay verification auxiliary device, it is characterised in that: include with Buchholz relay top cover (1) and framework (2) group all-in-one-piece support, activity cross-under on support and the distance rod (4) acting on the baffle plate (3) of Buchholz relay, the pressure transducer (10) being arranged on distance rod (4) and be arranged on distance rod (4) rear driving distance rod (4) hydraulic system；
Described support includes riser (5) and the transverse slat (6) of orthogonal setting, described riser (5) is parallel with framework (2), described transverse slat (6) is parallel with Buchholz relay top cover (1) lower surface, riser (5) top is provided with two locating dowels (8) matched with the fixing hole (7) on Buchholz relay top cover (1), riser (5) is located by connecting by locating dowel (8) and Buchholz relay top cover (1), being provided with detent I (9) on described transverse slat (6), framework (2) lower end is fixed in detent I (9) and realizes location；
The vertical activity cross-under of described distance rod (4) is on riser (5), and described distance rod (4) and baffle plate (3) are vertically arranged, and distance rod (4) front end is relative with baffle plate (3) center, and distance rod (4) rear end is connected to pressure transducer (10)；
Described riser (5) is fixed with character display (11) and single-chip microcomputer (12), pressure transducer (10) is connected with single-chip microcomputer (12) by holding wire, single-chip microcomputer (12) is connected with the input of character display (11), and single-chip microcomputer (12) is also connected with hydraulic system.
2. Buchholz relay according to claim 1 verification auxiliary device, it is characterized in that: between described riser (5) and framework (2), also set up a gripper shoe (13) being fixed on transverse slat (6), described gripper shoe (13) and riser (5) be arranged in parallel, and gripper shoe (13) is additionally provided with the supported hole (14) matched with distance rod (4) excircle.
3. the Buchholz relay verification auxiliary device stated according to claim 2, it is characterized in that: described gripper shoe (13) is Split type structure, gripper shoe (13) includes the upper backup pad (13-1) and the lower supporting plate (13-2) that are hinged, 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) and assembles latter two semicircle orifice and form described supported hole (14).
4. Buchholz relay according to claim 1 verification auxiliary device, it is characterised in that: described distance rod (4) and pressure transducer (10) are threaded connection.
5. Buchholz relay according to claim 1 verification auxiliary device, it is characterised in that: the end, one end that described distance rod (4) is relative with baffle plate (3) is sphere.
6. Buchholz relay according to claim 1 verification auxiliary device, it is characterised in that: described hydraulic system includes the hydraulic cylinder (15) and the hydraulic pump (16) that are connected by pipeline, and described hydraulic pump (16) is connected with single-chip microcomputer (12).
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105784309A true CN105784309A (en) | 2016-07-20 |
| CN105784309B 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 (5)
| 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 |
| 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 |
-
2016
- 2016-03-25 CN CN201610176015.2A patent/CN105784309B/en active Active
Patent Citations (5)
| 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 |
| 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 |
|---|---|
| CN105784309B (en) | 2018-07-27 |
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