CN2645218Y - Mash gas relay tester - Google Patents
Mash gas relay tester Download PDFInfo
- Publication number
- CN2645218Y CN2645218Y CN 03253213 CN03253213U CN2645218Y CN 2645218 Y CN2645218 Y CN 2645218Y CN 03253213 CN03253213 CN 03253213 CN 03253213 U CN03253213 U CN 03253213U CN 2645218 Y CN2645218 Y CN 2645218Y
- Authority
- CN
- China
- Prior art keywords
- force application
- application rod
- buchholz relay
- gas relay
- pulling force
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model relates to a gas relay calibrator for the power system, comprising a force application rod. The force application rod, which is connected with force application elements, is in the horizontal direction. A rally sensor is connected with the end of the force application rod. The signal output of the rally sensor is electrical connected with the signal input of the digital indicator. The utility model also comprises the cable. Rally sensor is connected with an end of the cable and the baffle of the gas relay is connected with the other end through the pipeline mouth of the gas relay in the horizontal direction. Because of the tension that the force application rod and the cable imposed on the baffle of the gas relay is in the horizontal direction, the calibration status of the gas relay is exactly the same with the actual use of state. Using the gas relay calibrator can reduce measurement error and improve the accuracy of the calibration. The utility model is not directly contacted with the oil and has no oil pollution because that only hanging the cable, adjusting the digital indicator to zero, and imposing pull tension to the force application rod via load elements is needed when checking.
Description
Technical field
The utility model relates to the calibration equipment of the Buchholz relay that a kind of electric power system uses.
Background technology
Buchholz relay claims Buchholz relay again, and electric power system is to the verification mode of Buchholz relay, and the most frequently used has two kinds, and first kind is moment indirect experiment method such as employing, claims to hang the counterweight experimental method again, and second kind is to adopt Buchholz relay flow velocity experimental bench.The former deficiency is manual operation, and randomness is big, and different operators can obtain different data with different number of operations, thereby measure error is big, and verification is inaccurate; Though the accuracy height of latter's verification, the each verification of operator all will touch greasy dirt, and is both unhygienic, inconvenient again, is not subjected to operator's welcome.The patent No. be 02213607.X's " Buchholz relay tester ", comprise dynamometer, the affixed force transmission element of once stretching of ergographic force transfer end, the other end of force transmission element passes vertical connection of baffle plate of oil pipe mouth with the Buchholz relay of Buchholz relay, the force application rod of stretching on the ergographic force side affixed, the upper end of force application rod is provided with force application component.With this patented technology verification Buchholz relay, though there is not oil pollution, but owing to force application rod, force transmission element is the up-down structure of erectting, thereby the time to the Buchholz relay verification, also Buchholz relay must be holded up, make the oil pipe of Buchholz relay consistent with the trend of force application rod, force transmission element, and Buchholz relay its oil pipe when user mode is the level trend, thereby caused the inconsistent of the verification state of Buchholz relay and actual user mode, this will increase measure error, influences the accuracy of verification.
Summary of the invention
The purpose of this utility model provides a kind of not only do not had oil pollution, verification accuracy but also higher Buchholz relay tester.
In order to realize above-mentioned purpose, this Buchholz relay tester, comprise force application rod, be connected to force application component on the force application rod, its design feature is that force application rod is a level trend, and being connected at the end of force application rod has pulling force sensor, and the signal output part of pulling force sensor is electrically connected with the signal input part of digital indicator formation, also comprise backguy, the oil pipe mouth that an end of this backguy can be connected with pulling force sensor, other end energy level is passed Buchholz relay with moving towards is connected on the baffle plate of Buchholz relay.
This Buchholz relay tester comprises that also one is fixed in the base on the force application rod end, and pulling force sensor is fixed on the base.On pulling force sensor, connect a strain plate, guy hook is housed on the strain plate.
Above-mentioned force application rod is that screw rod, force application component are the nuts that is screwed on the screw rod, and the screw thread silk on the nut inner surface is a wire inversion.Force application rod and force application component also can be selected other version for use.
As improvement to this Buchholz relay tester, also comprise a shell, pulling force sensor, strain plate are cased, guy hook is overhanging from the centre bore of the Internal baffle of shell, digital indicator is contained on the shell, and it is overhanging that force application rod passes shell, and force application component is contained on overhanging section of force application rod.
When adopting this Buchholz relay tester to the Buchholz relay verification, elder generation's horizontal direction is connected on the oil pipe mouth that an end is connected with pulling force sensor, the other end passes Buchholz relay of backguy on the baffle plate of Buchholz relay, under the situation that backguy does not stress, the adjustment digital indicator is a null value.Then, apply pulling force by force application component to force application rod, this pulling force makes the displacement that rotates around the shaft of the baffle plate of stayed mast by pulling force sensor and backguy pulling Buchholz relay, contact with the magnetic force contact of Buchholz relay until the end of baffle plate away from rotating shaft, be transformed into the signal of telecommunication at the pulling force that contacts moment by pulling force sensor, be input in the digital indicator, demonstrate concrete pulling force numerical value by digital indicator, the flow velocity and the made transmission of quantity value curve of stressing conditions of baffle plate of the oil of the Buchholz relay measured by Buchholz relay flow velocity experimental bench in advance of contrast again, the flow velocity of oil in the time of can obtaining Buchholz relay and move.
The pulling force transmission of quantity value source of Buchholz relay tester described in the utility model can be proofreaded with counterweight by national standard, guarantees tester self error within the limits prescribed.
With this Buchholz relay tester Buchholz relay is carried out verification, because force application rod and backguy are the level trends to the pulling force that baffle plate applied of Buchholz relay, therefore Buchholz relay need not be holded up, the verification state and the actual user mode of Buchholz relay are in full accord, thereby measure error is reduced, improved the accuracy of verification.Only need hang backguy during also owing to verification, force application rod be applied pulling force, directly not touch greasy dirt, no oil pollution to the digital indicator zeroing with by force application component.
Description of drawings
Embodiment of the present utility model is illustrated in conjunction with the accompanying drawings, and what accompanying drawing drew is the structural representation of the described Buchholz relay tester of embodiment.
Among the figure, 1 is force application rod, and 2 is force application component, 3 is pulling force sensor, and 4 is digital indicator, and 5 are backguy, 6 is strain plate, and 7 is guy hook, and 8 is lead, 9 is base, and 10 is shell, and 11 is Internal baffle, 12 is the oil pipe mouth of Buchholz relay, 13 is the baffle plate of Buchholz relay, and 14 is the baffle plate rotating shaft, and 15 is the magnetic force contact of Buchholz relay.
Embodiment
With reference to accompanying drawing, the described Buchholz relay tester of present embodiment, comprise force application rod 1, be connected to force application component 2 on the force application rod 1, force application rod 1 is the level trend, end at force application rod 1 is connected with base 9, be connected with pulling force sensor 3 on the base 9, the signal output part of pulling force sensor 3 is electrically connected with the signal input part formation of digital indicator 4 by lead 8, on pulling force sensor 3, connect a strain plate 6, guy hook 7 is housed on the strain plate 6, one of backguy 5 terminates on the guy hook 7, the oil pipe mouth 12 that other end level is passed Buchholz relay with moving towards is connected on the baffle plate 13 of Buchholz relay, pulling force sensor 3, strain plate 6 is contained in the shell 10, guy hook 7 is overhanging from the centre bore of the Internal baffle 11 of shell 10, digital indicator 4 is contained on the shell 10, and it is overhanging that force application rod 1 passes shell 10, and force application component 2 is contained on overhanging section of force application rod 1.
In the present embodiment, it is the nuts that are screwed on the screw rod that force application rod 1 is selected screw rod, force application component 2 for use, and the screw thread silk on the nut inner surface is a wire inversion.Pulling force sensor 3 and digital indicator 4 are to select supporting KV2001 pull sensing display for use, owing to be known technology, thereby not in carefully stating.
Claims (5)
1, a kind of Buchholz relay tester, comprise force application rod (1), be connected to force application component (2) on the force application rod (1), it is characterized in that force application rod (1) is the level trend, end linking at force application rod (1) has pulling force sensor (3), the signal output part of pulling force sensor (3) is electrically connected with the signal input part formation of digital indicator (4), also comprise backguy (5), the oil pipe mouth (12) that an end of this backguy (5) can be connected with pulling force sensor (3), other end energy level is passed Buchholz relay with moving towards is connected on the baffle plate (13) of Buchholz relay.
2, Buchholz relay tester according to claim 1 is characterized in that also comprising that one is fixed in the base (9) on force application rod (1) end, and pulling force sensor (3) is fixed on the base (9).
3 Buchholz relay testers according to claim 1 is characterized in that connecing a strain plate (6) on pulling force sensor (3), and guy hook (7) is housed on the strain plate (6).
4, Buchholz relay tester according to claim 1 is characterized in that force application rod (1) is that screw rod, force application component (2) are the nuts that is screwed on the screw rod.
5, according to claim 1,2,3 or 4 described Buchholz relay testers, it is characterized in that also comprising a shell (10), pulling force sensor (3), strain plate (6) are contained in the shell (10), guy hook (7) is overhanging from the centre bore of the Internal baffle (11) of shell (10), digital indicator (4) is contained on the shell (10), it is overhanging that force application rod (1) passes shell (10), and force application component (2) is contained on overhanging section of force application rod (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03253213 CN2645218Y (en) | 2003-08-31 | 2003-08-31 | Mash gas relay tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03253213 CN2645218Y (en) | 2003-08-31 | 2003-08-31 | Mash gas relay tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2645218Y true CN2645218Y (en) | 2004-09-29 |
Family
ID=34294331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03253213 Expired - Fee Related CN2645218Y (en) | 2003-08-31 | 2003-08-31 | Mash gas relay tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2645218Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784309A (en) * | 2016-03-25 | 2016-07-20 | 国家电网公司 | Gas relay calibration assistance device |
| CN106707147A (en) * | 2016-11-30 | 2017-05-24 | 国家电网公司 | Gas relay flow velocity setting device and method |
-
2003
- 2003-08-31 CN CN 03253213 patent/CN2645218Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784309A (en) * | 2016-03-25 | 2016-07-20 | 国家电网公司 | Gas relay calibration assistance device |
| CN105784309B (en) * | 2016-03-25 | 2018-07-27 | 国家电网公司 | Buchholz relay verifies auxiliary device |
| CN106707147A (en) * | 2016-11-30 | 2017-05-24 | 国家电网公司 | Gas relay flow velocity setting device and method |
| CN106707147B (en) * | 2016-11-30 | 2024-04-09 | 国家电网公司 | Gas relay flow velocity setting device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |