CN109633514B - Active protection type polarity tester for power transformer - Google Patents
Active protection type polarity tester for power transformer Download PDFInfo
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- CN109633514B CN109633514B CN201811653455.8A CN201811653455A CN109633514B CN 109633514 B CN109633514 B CN 109633514B CN 201811653455 A CN201811653455 A CN 201811653455A CN 109633514 B CN109633514 B CN 109633514B
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- automatic switching
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- 238000001514 detection method Methods 0.000 claims abstract description 17
- 230000000007 visual effect Effects 0.000 claims abstract description 7
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 12
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 12
- 241001330002 Bambuseae Species 0.000 claims description 12
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 12
- 239000011425 bamboo Substances 0.000 claims description 12
- 230000005611 electricity Effects 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 2
- 230000009194 climbing Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/72—Testing of electric windings
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Alarm Devices (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The invention discloses an active protection type power transformer polarity tester which comprises wire clamps, a support frame and a detection box, wherein the support frame comprises support rods, a connecting rod and a holding rod, the upper end of the holding rod is vertically connected with the connecting rod, the two ends of the connecting rod are respectively and vertically provided with the support rods, the end part of each support rod is respectively provided with the wire clamp, an automatic switching device, an audible and visual alarm, a battery and a pointer type universal meter for detecting a transformer are arranged in the detection box, one wire clamp is electrically connected with the negative electrode of the battery, the other wire clamp is electrically connected with the automatic switching device, the automatic switching device is electrically connected with the positive electrode of the battery, and the audible and visual alarm is electrically connected. The problem of present circuit short circuit appear easily and cause battery life to shorten is solved, and automatic switching device can break off the circuit of tester and report to the police and remind, can protect detector and staff's safety, lets use safelyr.
Description
Technical Field
The invention relates to the technical field of power detection, in particular to an active protection type power transformer polarity tester.
Background
After the mutual inductor is newly installed or replaced due to a fault, polarity detection needs to be carried out on the mutual inductor to ensure accurate power metering, and in the traditional measuring mode, a lead is led out from each of the positive electrode and the negative electrode of a dry battery and is connected with a current or voltage mutual inductor through the lead, and the pointer deflection direction is observed to carry out observation.
The existing detection mode has two problems, on one hand, two leads led out from a rod battery are easy to be directly connected to cause short-circuit discharge of a dry battery, and the service life of the battery is shortened; on the other hand, the mutual inductor must be cut off the power supply in the detection process, if the incoming line switch is abnormal, the mutual inductor is electrified, and the staff who carries out the polarity detection of the mutual inductor can be in danger of electric shock.
Disclosure of Invention
The invention aims at the defects in the prior art, and provides an active protection type power transformer polarity tester, two wire clamps are adopted to clamp and fix primary wires at two ends of a transformer, the connection is firmer and the use is convenient, the wire clamps are fixed on a support rod, the two wire clamps cannot be in contact with each other, the problem that the service life of a battery is shortened due to the fact that short circuit of a line easily occurs at present is solved, the cost is saved, a support frame can enable workers to detect the transformer at a high position or a low position without climbing, meanwhile, an automatic switching device is arranged, when the transformer is electrified, the automatic switching device can disconnect the line of the tester and alarm and remind, on one hand, the workers can be reminded of correct operation, on the other hand, the safety of a detector and the workers can be protected, and the use is.
In order to realize the purpose, the invention provides the following technical scheme:
the utility model provides an initiative protection type power transformer polarity tester, includes fastener, support frame, detection box, the support frame includes bracing piece, connecting rod, holding rod, the upper end of holding rod even has the connecting rod perpendicularly, the both ends of connecting rod all are equipped with the bracing piece perpendicularly, and the tip of every bracing piece all is equipped with the fastener, be equipped with automatic switching device, audible-visual annunciator, battery in the detection box, be used for detecting the pointer multimeter of mutual-inductor, a fastener is connected with the negative pole electricity of battery, and another fastener is connected with automatic switching device electricity, automatic switching device is connected with the positive pole electricity of battery, audible-visual annunciator is connected with automatic switching device electricity.
Preferably, the automatic switching device comprises a controller and a relay, the relay is arranged on a line between the positive electrode of the battery and the wire clamp, and the controller is electrically connected with the audible and visual alarm and the relay respectively.
Preferably, the tip of bracing piece articulates there is the connection ball, be equipped with the line hole on the connection ball, the line is downthehole to the one end of fastener is located, and the fastener passes through the connecting axle and is crossed the inner wall connection in line hole, even there is a stay cord on the connecting axle, be equipped with the knob on the holding rod, the stay cord passes line hole, the inside of bracing piece, the inside of connecting rod, the inside of holding rod in proper order and is connected with the knob.
Preferably, the fastener includes first chuck, second chuck, the connecting axle includes an axle sleeve, an axle center section of thick bamboo, and telescopic one end of axle and the inner wall fixed connection who crosses the line hole, the axle sleeve cup joints in the outside of an axle center section of thick bamboo, is equipped with the torsional spring between an axle sleeve and the axle center section of thick bamboo, the one end and the axle muffjoint of torsional spring, and the other end and the axle center section of thick bamboo of torsional spring are connected, and it is fixed through the bolt between an axle sleeve and the axle center section of thick bamboo, the bolt is connected with an axle center section of thick bamboo, stay cord and latch connection, first chuck and axle muffjoint, the second chuck is connected with.
Preferably, the shaft sleeve is provided with a lock hole and a rotating port, the lock hole is arranged close to the end part, the lock hole is matched with the bolt, and the end part of the second chuck penetrates through the rotating port to be connected with the outer side wall of the shaft core barrel.
Preferably, one end of the shaft core barrel is provided with an installation column, the torsion spring is sleeved on the connection column, the inner wall of the other end of the shaft core barrel is provided with a lock pin sleeve barrel, the side wall of the shaft core barrel is provided with a pin outlet hole, the upper end opening of the lock pin sleeve barrel is aligned with the pin outlet hole, the bolt is arranged in the lock pin sleeve barrel, the spring is arranged between the lower end of the bolt and the bottom of the lock pin sleeve barrel, the bottom of the lock pin sleeve barrel is provided with a wire outlet hole, and the pull rope penetrates through the wire outlet hole and is connected with the bolt.
Preferably, the lower end of the bolt is provided with a pin seat, and the pin seat is connected with the inner wall of the lock pin sleeve barrel in a sliding manner.
Preferably, the inner wall of the pin outlet hole is provided with a limiting ring.
Compared with the prior art, the invention has the beneficial effects that:
1. the two wire clamps are adopted to clamp and fix primary wires at two ends of the mutual inductor, so that the connection is firmer, the use is convenient, the wire clamps are fixed on the support rod, the two wire clamps cannot be in contact, the problem that the service life of a battery is shortened due to the fact that short circuit easily occurs at present is solved, the cost is saved, the support frame can enable workers to detect the mutual inductor at a high position or a low position without climbing, meanwhile, the automatic switching device is arranged, when the mutual inductor is electrified, the automatic switching device can disconnect the circuit of the tester and alarm and remind, on one hand, the workers can be reminded of correct operation, on the other hand, the safety of the detector and the workers can be protected, and the use is safer.
2. The wire clamp is hinged with the support rod ball chain through the connecting ball, so that the position adjustment of the wire clamp in the space can be increased, the angle adjustment is more flexible and convenient, and the detection is convenient.
3. The connecting shaft enables the wire clamp to have an automatically closed clamping force, the clamping firmness is ensured, meanwhile, the shaft sleeve and the shaft center cylinder are fixed through the bolt, the wire clamp can be opened in advance during use, after the wire clamp reaches a clamping position, the bolt is pulled through the rotation of the knob by utilizing the pull rope to achieve automatic closing of the wire clamp, the automatic wire clamping process is completed, workers do not need to climb up or descend to connect a circuit, and the detection is safer and more convenient.
4. According to the invention, the pin seat is arranged at the lower end of the bolt, the pin seat is connected with the inner wall of the lock pin sleeve barrel in a sliding manner, so that the sliding stability of the bolt can be ensured, the limit ring is arranged on the inner wall of the pin outlet hole, the stroke of the pin seat can be limited, the bolt is prevented from falling off, meanwhile, the bolt can be limited by replacing a pull rope, and the service life of the pull rope is prolonged.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the cartridge;
FIG. 3 is a cross-sectional view of a test stick;
FIG. 4 is a schematic view of the structure of the support rod and the wire clamp;
FIG. 5 is a schematic view of a fitting structure of the wire clamp and the connecting ball;
FIG. 6 is a schematic structural view of the cable clamp;
FIG. 7 is a schematic structural view of a connecting shaft;
fig. 8 is a schematic view of the structure of the shaft sleeve.
FIG. 9 is a schematic view of the construction of the hub barrel;
FIG. 10 is a cross-sectional view of the mandrel barrel.
In the figure: 1-wire clamp; 101-a first collet; 102-a second chuck; 2-a support rod; 201-connecting ball; 202-a wire through hole; 3-a connecting rod; 4-holding the rod; 5-a detection kit; 501-automatic switching device; 502-audible and visual alarm; 503-pointer multimeter; 504-a battery; 6-knob; 7-pulling a rope; 8-a connecting shaft; 801-shaft sleeve; 802-axial core barrel; 803-torsion spring; 804-a keyhole; 805-rotation ports; 806-mounting posts; 807-pin hole forming; 808-lockbarrel; 809-a spacing ring; 810-a latch; 811-pin seat; 802-spring; 813-outlet hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, an initiative protection type power transformer polarity tester, including fastener 1, support frame, detection box 5, the support frame includes bracing piece 2, connecting rod 3, holding rod 4, the upper end of holding rod 4 links perpendicularly has connecting rod 3, the both ends of connecting rod 3 all are equipped with bracing piece 2 perpendicularly, and the tip of every bracing piece 2 all is equipped with fastener 1, as shown in fig. 2, be equipped with automatic switching device 501, audible-visual annunciator 502, battery 504 in the detection box 5, be used for detecting mutual-inductor's pointer multimeter 503, the battery is 1.5V dry battery, a fastener 101 and battery 504's negative pole electric connection, another fastener 101 is connected with automatic switching device 501 electricity, automatic switching device 501 is connected with the anodal electric of battery 504, audible-visual annunciator 502 is connected with automatic switching device 501 electricity.
The automatic switching device 501 comprises a controller and a relay, the controller adopts a 51-chip microcomputer, the relay is arranged on a line between the positive electrode of the battery 504 and the wire clamp 1, and the controller is respectively electrically connected with an audible and visual alarm and the relay.
As shown in fig. 4, the end of the support rod 2 is hinged with a connecting ball 201, so that the position adjustment of the wire clamp in the space can be increased, the angle adjustment is more flexible and convenient, and the detection is convenient. As shown in fig. 5, a wire hole 202 is formed in the connecting ball 201, one end of the wire clamp 1 is arranged in the wire hole 202, the wire clamp 1 is connected with the inner wall of the wire hole 202 through a connecting shaft 8, as shown in fig. 3, a pull rope 7 is connected to the connecting shaft 8, a knob 6 is arranged on the holding rod 4, and the pull rope 7 sequentially penetrates through the wire hole 202, the inside of the supporting rod 2, the inside of the connecting rod 3 and the inside of the holding rod 4 and is connected with the knob 6.
As shown in fig. 6, the wire clamp 1 includes a first clamp 101 and a second clamp 102, as shown in fig. 7, the connecting shaft 8 includes a shaft sleeve 801 and a shaft center tube 802, one end of the shaft sleeve 801 is fixedly connected to an inner wall of the wire passing hole 202, the shaft sleeve 801 is sleeved outside the shaft center tube 802, a torsion spring 803 is disposed between the shaft sleeve 801 and the shaft center tube 802, one end of the torsion spring 803 is connected to the shaft sleeve 801, the other end of the torsion spring 803 is connected to the shaft center tube 802, the shaft sleeve 801 is fixed to the shaft center tube 802 by a pin 810, the pin 810 is connected to the shaft center tube 802, the pull rope 7 is connected to the pin 810, the first clamp 101 is connected to the shaft sleeve 801, and the second clamp 102 is connected to the shaft center tube 802. It is fixed through bolt 810 between axle sleeve 801 and an axle center section of thick bamboo 802, can open the fastener in advance during the use, after reacing clamping position, utilize the automatic closure that stay cord 7 pulling bolt 810 realized the fastener through rotating knob 6 to accomplish automatic trapping process, the staff need not climb high or climb low and come the interconnecting link, detect safe convenience more.
As shown in fig. 8, a lock hole 804 and a rotation opening 805 are formed in the shaft sleeve 801, the lock hole 804 is disposed near an end portion, the lock hole 804 is engaged with a plug pin 810, and an end portion of the second chuck 102 passes through the rotation opening 805 to be connected to an outer side wall of the shaft center cylinder 802.
As shown in fig. 9, one end of the shaft barrel 802 is provided with a mounting column 806, as shown in fig. 7, the torsion spring 803 is sleeved on the connecting column 806, as shown in fig. 10, the inner wall of the other end of the shaft barrel 802 is provided with a lock pin sleeve barrel 808, the side wall of the shaft barrel 802 is provided with a pin outlet hole 807, the upper end opening of the lock pin sleeve barrel 808 is aligned with the pin outlet hole 807, the bolt 810 is arranged in the lock pin sleeve barrel 808, the spring 802 is arranged between the lower end of the bolt 810 and the bottom of the lock pin sleeve barrel 808, the bottom of the lock pin sleeve barrel 808 is provided with a wire outlet hole 813, and the pull rope 7 penetrates through the wire outlet hole 813 and is.
As shown in fig. 10, a pin seat 811 is disposed at a lower end of the plug 810, the pin seat 811 is slidably connected to an inner wall of the locking pin sleeve 808, and a limit ring 809 is disposed on an inner wall of the pin outlet hole 807. Guarantee the gliding stability of bolt 810, be equipped with spacing ring 809 on the inner wall of going out pinhole 807, can prescribe a limit to the stroke of key seat 811, prevent that bolt 810 from deviating from, can replace stay cord 7 to come spacing bolt simultaneously, improved the life of stay cord 7.
When the universal meter is used, if a current transformer is detected, firstly, the pointer universal meter 503 is driven to a direct current gear, then the wire clamp 1 is broken off, a certain angle is formed between the first chuck 101 and the second chuck 102, when the current transformer is rotated to a certain position, the pin outlet hole 807 is aligned with the lock hole 804, the pin 810 can be inserted into the lock hole 804 under the action of the spring 803 to fix the shaft sleeve 801 and the shaft sleeve 802, then the angles of the two wire clamps 1 are adjusted, after the adjustment is finished, the holding rod is lifted, the wire clamp 1 is connected with a mutual inductance primary wire at two ends of the current transformer, the pin 810 is pulled by the pull rope 7 through the rotation knob 6, the pin 810 is separated from the lock hole 804, under the action of the torsion spring 803, the first chuck 101 and the second chuck 102 are closed to clamp the mutual inductance primary wire, meanwhile, the pointer universal meter 503 is connected with the mutual inductance secondary wire for testing, and the current transformer is electrified, then, and the controller controls the audible and visual alarm 502. The two wire clamps 1 are adopted to clamp and fix primary wires at two ends of the mutual inductor, connection is firmer, use is convenient, the wire clamps are fixed on the supporting rod 2, contact cannot be generated between the two wire clamps 1, the problem that the service life of a battery is shortened due to line short circuit easily occurs at present is solved, cost is saved, a support frame can enable workers to detect the mutual inductor at a high position or a low position without climbing, meanwhile, the automatic switching device 501 is arranged, when the mutual inductor is electrified, the automatic switching device 501 can disconnect the line of the tester and alarm and remind, on one hand, the workers can be reminded of correct operation, on the other hand, the safety of the detector and the workers can be protected, and use is safer.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. The utility model provides an initiative protection type power transformer polarity tester which characterized in that: the wire clamp comprises a wire clamp, a support frame and a detection box, wherein the support frame comprises support rods, connecting rods and a holding rod, the upper end of the holding rod is vertically connected with the connecting rod, the two ends of the connecting rod are respectively and vertically provided with the supporting rod, the end part of each support rod is provided with the wire clamp, the end part of each support rod is hinged with a connecting ball, a wire passing hole is arranged on each connecting ball, one end of each wire clamp is arranged in each wire passing hole, each wire clamp is connected with the inner wall of each wire passing hole through a connecting shaft, each connecting shaft is connected with a pull rope, each holding rod is provided with a knob, each pull rope sequentially passes through each wire passing hole, the inside of each support rod, the inside of each connecting rod and the inside of each holding rod and is connected with the knob, each wire clamp comprises a first clamp and a second clamp, each connecting shaft comprises, be equipped with the torsional spring between axle sleeve and the axle center section of thick bamboo, the one end and the axle muffjoint of torsional spring, the other end and the axle center section of thick bamboo of torsional spring are connected, and it is fixed through the bolt between axle sleeve and the axle center section of thick bamboo, the bolt is connected with an axle center section of thick bamboo, stay cord and bolt connection, first chuck and axle muffjoint, the second chuck is connected with an axle center section of thick bamboo, be equipped with automatic switching device, audible-visual annunciator, battery in the detection box, be used for detecting the pointer multimeter of mutual-inductor, a fastener is connected with the negative pole electricity of battery, and another fastener is connected with automatic switching device electricity, automatic switching device is connected with the positive pole electricity of battery, audible.
2. The active guarding power transformer polarity tester as claimed in claim 1, wherein: the automatic switching device comprises a controller and a relay, the relay is arranged on a line between the positive pole of the battery and the wire clamp, and the controller is electrically connected with the audible and visual alarm and the relay respectively.
3. The active guarding power transformer polarity tester as claimed in claim 1, wherein: the shaft sleeve is provided with a lock hole and a rotating port, the lock hole is arranged close to the end part and matched with the bolt, and the end part of the second chuck penetrates through the rotating port to be connected with the outer side wall of the shaft sleeve.
4. The active guarding power transformer polarity tester as claimed in claim 3, wherein: the novel safety lock pin is characterized in that an installation column is arranged at one end of the shaft core barrel, the torsion spring is sleeved on the connection column, a lock pin sleeve barrel is arranged on the inner wall of the other end of the shaft core barrel, a pin outlet hole is formed in the side wall of the shaft core barrel, an upper end opening of the lock pin sleeve barrel is aligned with the pin outlet hole, the bolt is arranged in the lock pin sleeve barrel, the spring is arranged between the lower end of the bolt and the bottom of the lock pin sleeve barrel, a wire outlet hole is formed in the bottom of the lock pin sleeve barrel, and the pull rope penetrates through.
5. The active guarding power transformer polarity tester as claimed in claim 4, wherein: the lower end of the bolt is provided with a pin boss, and the pin boss is connected with the inner wall of the lock pin sleeve barrel in a sliding manner.
6. The active guarding power transformer polarity tester as claimed in claim 4, wherein: and a limiting ring is arranged on the inner wall of the pin outlet hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811653455.8A CN109633514B (en) | 2018-12-29 | 2018-12-29 | Active protection type polarity tester for power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811653455.8A CN109633514B (en) | 2018-12-29 | 2018-12-29 | Active protection type polarity tester for power transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109633514A CN109633514A (en) | 2019-04-16 |
| CN109633514B true CN109633514B (en) | 2021-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811653455.8A Active CN109633514B (en) | 2018-12-29 | 2018-12-29 | Active protection type polarity tester for power transformer |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5396731B2 (en) * | 2008-03-27 | 2014-01-22 | 株式会社高岳製作所 | Test method for instrument transformer |
| CN203551720U (en) * | 2013-10-14 | 2014-04-16 | 国家电网公司 | Mutual inductor polarity testing device |
| CN206400047U (en) * | 2017-01-17 | 2017-08-11 | 国网青海省电力公司检修公司 | A kind of Current Transmit polarity test device |
| CN206945881U (en) * | 2017-05-19 | 2018-01-30 | 国网宁夏电力公司石嘴山供电公司 | Novel current transformer polarity tester |
| CN107942190A (en) * | 2017-11-17 | 2018-04-20 | 国网山东省电力公司淄博供电公司 | Measuring equipment electrified automatic alarm formula device for detecting polarity |
-
2018
- 2018-12-29 CN CN201811653455.8A patent/CN109633514B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5396731B2 (en) * | 2008-03-27 | 2014-01-22 | 株式会社高岳製作所 | Test method for instrument transformer |
| CN203551720U (en) * | 2013-10-14 | 2014-04-16 | 国家电网公司 | Mutual inductor polarity testing device |
| CN206400047U (en) * | 2017-01-17 | 2017-08-11 | 国网青海省电力公司检修公司 | A kind of Current Transmit polarity test device |
| CN206945881U (en) * | 2017-05-19 | 2018-01-30 | 国网宁夏电力公司石嘴山供电公司 | Novel current transformer polarity tester |
| CN107942190A (en) * | 2017-11-17 | 2018-04-20 | 国网山东省电力公司淄博供电公司 | Measuring equipment electrified automatic alarm formula device for detecting polarity |
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|---|---|
| CN109633514A (en) | 2019-04-16 |
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