CN113281627A - Alternating current withstand voltage test auxiliary device - Google Patents
Alternating current withstand voltage test auxiliary device Download PDFInfo
- Publication number
- CN113281627A CN113281627A CN202110623782.4A CN202110623782A CN113281627A CN 113281627 A CN113281627 A CN 113281627A CN 202110623782 A CN202110623782 A CN 202110623782A CN 113281627 A CN113281627 A CN 113281627A
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- test
- withstand voltage
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- 238000012360 testing method Methods 0.000 title claims abstract description 112
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 10
- 208000027418 Wounds and injury Diseases 0.000 abstract description 5
- 230000006378 damage Effects 0.000 abstract description 4
- 208000014674 injury Diseases 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 238000009413 insulation Methods 0.000 description 9
- 229910052742 iron Inorganic materials 0.000 description 7
- 238000001514 detection method Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000006748 scratching Methods 0.000 description 2
- 230000002393 scratching effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0425—Test clips, e.g. for IC's
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention relates to the technical field of power testing, and particularly discloses an auxiliary device for an alternating current withstand voltage test. The alternating current withstand voltage test auxiliary device provided by the invention comprises a shell, a rotating shaft and a clamping assembly. The shell is provided with an accommodating cavity. The rotating shaft is arranged in the accommodating cavity and is rotatably connected with the shell. The clamping assembly is connected to the rotating shaft through a wire and used for clamping a measuring object, the wire can rotate around the rotating shaft, the clamping assembly is far away from or close to the measuring object, the clamping assembly comprises three test clamps, the three test clamps are arranged on the outer side of the shell at intervals and used for clamping or loosening the measuring object. Three test clamp is connected in the casing outside, can avoid the test to press from both sides the personal injury and the electric wire netting risk that produce when the measurement object leads to the power supply operation, improves experimental security. The three test clamps are convenient for carrying out three-phase simultaneous test on the measured object, and further improve the test efficiency.
Description
Technical Field
The invention relates to the technical field of electric power testing, in particular to an auxiliary device for an alternating current withstand voltage test.
Background
According to electric power equipment overhaul test regulations (Q/CSG1206007-2017), insulation detection needs to be carried out on 10kV switch cabinet breakers every six years, and test items comprise alternating current withstand voltage tests of breaker opening and closing to the ground. The alternating-current voltage withstand test can be divided into a phase-by-phase test or a three-phase simultaneous test, the phase-by-phase test needs six times of voltage withstand test operation, the three-phase simultaneous test only needs two times of voltage withstand test operation, and the workload is three times different. Therefore, under the condition that the equipment can be short-circuited, a tester often adopts a three-phase simultaneous measurement mode to perform a test.
In the prior art, a short-circuit wire used for three-phase simultaneous measurement test usually adopts a thin iron wire as a contact end of a test device. However, the thin iron wire has the problems of hard texture, difficult wire take-up and easy scratching of testers, meanwhile, the bent part of the iron wire is difficult to recover, and the wire needs to be unwound before being used next time when the wire take-up is not neat enough, so that the workload during the test can be increased, and the working efficiency during the test is influenced; and thin iron wire is tiny difficult for discovering, misses easily on test equipment, does not discover the thin iron wire who misses when equipment user to when carrying out the power supply operation, can produce very big bodily injury and electric wire netting risk.
Disclosure of Invention
The invention aims to provide an alternating current withstand voltage test auxiliary device to solve the potential safety hazard generated during a three-phase simultaneous test.
In order to achieve the purpose, the invention adopts the following technical scheme:
an alternating current withstand voltage test auxiliary device includes:
a housing provided with an accommodating cavity;
the rotating shaft is arranged in the accommodating cavity and is rotatably connected with the shell;
the clamping assembly is connected with the rotating shaft through a wire, the wire can wind the rotating shaft to rotate, so that the clamping assembly is far away from or close to a measuring object, the clamping assembly comprises three test clamps, and the test clamps are arranged outside the shell at intervals and used for clamping or loosening the measuring object.
Preferably, the ac withstand voltage test assisting apparatus further includes:
and the resetting component is connected with the lead and the rotating shaft and is used for automatically accommodating the lead.
Preferably, the reset assembly comprises:
the reset piece is connected to the rotating shaft, when the rotating shaft rotates forwards, the wire is lengthened, the reset piece stores energy, and when the rotating shaft rotates backwards, the reset piece drives the rotating shaft to rotate backwards, so that the wire is automatically wound on the rotating shaft.
Preferably, the return member is a coil spring.
Preferably, the ac withstand voltage test assisting apparatus further includes:
and the alarm assembly is electrically connected with the lead, and when the lead is extended, the alarm assembly gives an alarm.
Preferably, the alarm assembly comprises:
a power supply member connected to the housing;
the sound alarm piece is electrically connected with the power supply piece;
the sensing piece, the sensing piece with audible alarm piece electric connection to be connected to in the pivot, work as the sensing piece senses during the moment of torsion of pivot, audible alarm piece can with the power supply unit switches on.
Preferably, the alarm assembly further comprises:
the lamp light piece, the lamp light piece with response piece with power supply unit electric connection, and set up in the casing outside, work as the response piece senses during the moment of torsion of pivot, the lamp light piece can with power supply unit switches on.
Preferably, the sensing member is a torque switch.
Preferably, the test clip comprises:
the outer-mounted handle is sleeved on the test clamp and made of rubber materials.
Preferably, the wire is made of copper wire.
The invention has the beneficial effects that:
the auxiliary device for the alternating current withstand voltage test comprises a shell, a rotating shaft and a clamping assembly, wherein the clamping assembly is connected to the rotating shaft through a wire, and the rotating shaft is driven to rotate by stretching the wire, so that the clamping assembly is close to a measuring object, and the clamping assembly is further convenient to clamp the measuring object, and the test of the test is guaranteed. The centre gripping subassembly includes that three test presss from both sides, and three test presss from both sides and connects in the casing outside, can avoid test press from both sides to lose the personal injury and the electric wire netting risk that produce when measuring object leads to the power supply operation. Meanwhile, the three test clamps are convenient for carrying out three-phase simultaneous test on the measured object, and the test efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of an ac withstand voltage test auxiliary device provided in an embodiment of the present invention;
fig. 2 is a schematic sectional view of a casing of an ac withstand voltage test auxiliary device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a part of the connection between the alarm assembly and the rotating shaft according to the embodiment of the present invention.
In the figure:
10. an alternating current withstand voltage test auxiliary device;
1. a housing; 2. a rotating shaft;
3. a clamping assembly; 31. a wire; 32. a test clip; 321. a clamping portion; 322. a hand-held portion;
4. a reset assembly;
5. an alarm component; 51. a power supply member; 52. a sound alarm member; 53. a sensing member; 54. and a light member.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
In the present invention, the terms of orientation such as "upper", "lower", "left", "right", "inner" and "outer" are used in the case where no description is made on the contrary, and these terms of orientation are used for easy understanding, and thus do not limit the scope of the present invention.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
The function of the switch cabinet circuit breaker in an electrical circuit is to open and close the circuit, and is one of the important elements of the electrical circuit. Because the isolating switch has no arc extinguishing capability, the current in operation can not be cut off, and once the circuit breaker is abnormal, the safety of the power grid has great hidden danger. The insulation resistance represents the insulation capability of the equipment, and once the insulation capability of the equipment is insufficient, the equipment cannot bear high voltage, for example, a breaker fracture insulation defect cannot bear breakdown discharge caused by the high voltage. Therefore, insulation detection of the switchgear circuit breaker needs to be performed regularly. The AC withstand voltage test voltage is 0.8 times of the factory voltage of the equipment, the test time is 60s, and the equipment passes the AC withstand voltage test without breakdown discharge.
The three-phase simultaneous measurement in the embodiment means that three measurement pairs of three phases are combined into one measurement object, the resistance value of the combined measurement object is smaller than the minimum value of the three measurement pairs according to the parallel circuit principle, and when the insulation or alternating current withstand voltage test of the combined object is qualified, the three-phase single test is also qualified. Therefore, the three-phase simultaneous measurement method can reduce the test times by 67 percent and greatly improve the test working efficiency.
As shown in fig. 1 to 3, the present embodiment provides an ac voltage withstand test auxiliary device 10, which is used in insulation detection of a switch cabinet breaker to improve test efficiency.
As shown in fig. 1 and fig. 2, the ac withstand voltage test auxiliary device 10 provided in the present embodiment includes a housing 1, a rotating shaft 2, and a clamping assembly 3. Wherein the housing 1 is provided with an accommodating cavity. The rotating shaft 2 is arranged in the accommodating cavity and is rotatably connected to the shell 1. The clamping assembly 3 is connected to the rotating shaft 2 through a wire 31 and used for clamping a measuring object, the wire 31 can rotate around the rotating shaft 2, the clamping assembly 3 is far away from or close to the measuring object, the clamping assembly 3 comprises three test clamps 32, and the three test clamps 32 are arranged on the outer side of the shell 1 at intervals and used for clamping or loosening the measuring object.
Specifically, the clamping component 3 is connected to the rotating shaft 2 through the wire 31, and the wire 31 is stretched to drive the rotating shaft 2 to rotate, so that the clamping component 3 is close to the measuring object, and further the clamping component 3 is convenient to clamp the measuring object, and the test of the test is ensured. When the clamping component 3 is far away from the measuring object and withdraws the arranging wire 31, the arranging wire 31 is accommodated through the reversal of the rotating shaft 2, and then the wire 31 is convenient to induce and arrange, so that the arranging efficiency after the test is improved. The clamping assembly 3 comprises three test clamps 32, the three test clamps 32 are connected to the outer side of the shell 1, and the personal injury and the power grid risk caused by the fact that the test clamps 32 are left on a measuring object to cause power supply operation can be avoided. Three test clamp 32 can carry out the three-phase simultaneously and survey the cubical switchboard circuit breaker to when the interval setting of three test clamp 32 can avoid the interference of test clamp 32, the three-phase of being convenient for is surveyed simultaneously.
Optionally, the test clip 32 comprises a clamping portion 321 and a hand holding portion 322, and the hand holding portion 322 can facilitate hand operation of the tester, so as to prevent the clamping assembly 3 from scratching the tester. Meanwhile, the grip portion 322 can adjust the clamping portion 321 to quickly clamp or loosen the measurement object, thereby avoiding increasing the workload of the test and further influencing the efficiency of the test.
In order to facilitate connection of the wire 31 to the clamping portion 321, the grip portion 322 is preferably a hollow structure, and the wire 31 passes through the grip portion 322 to be connected to the clamping portion 321, so as to facilitate connection of the wire 31 to the measurement object. Meanwhile, the direct contact between the lead 31 and the tester can be avoided, and the safety of the tester is further improved.
Further, in order to improve the safety performance of the tester, the test clip 32 further comprises an outer-mounted handle, the grip portion 322 is sleeved with the outer-mounted handle, when the conducting wire 31 can be prevented from being conducted, the outer-mounted handle is made of rubber, and the outer-mounted handle made of rubber plays a role in insulation and isolation protection. Of course, in the present embodiment, the specific material of the exterior handle is not particularly limited as long as the insulating function of the grip portion 322 and the holding portion 321 can be ensured.
In the prior art, the thin iron wire is used as a contact end of a test device, the thin iron wire is hard in texture, and the whole recovery is difficult.
In order to increase the recovery and arrangement speed of the ac withstand voltage test assisting apparatus 10, it is preferable that the wire 31 is made of a copper wire, and the copper wire is soft, so that the tester is not scratched, and the recovery and arrangement of the wire 31 are facilitated, thereby increasing the arrangement speed of the tester.
Optionally, the diameter of the casing 1 of the ac withstand voltage test assisting apparatus 10 is 50cm, and the apparatus is small in overall size, easy to carry, and convenient to operate.
Preferably, the ac withstand voltage test assisting apparatus 10 further includes a reset assembly 4, and the reset assembly 4 is connected to the wire 31 and the rotating shaft 2 and is configured to automatically receive the wire 31.
Preferably, reset assembly 4 includes the piece that resets, resets and connects in pivot 2, and when pivot 2 corotation, wire 31 was elongated, resets and stores the energy, and when pivot 2 reversal, the energy release that resets and store, and then drive pivot 2 reversal, makes wire 31 automatic winding pivot 2 to reach the automatic mesh of accomodating wire 31.
Preferably, the return member is a coil spring. The coil spring and the wire 31 are both sleeved on the rotating shaft 2, when the rotating shaft 2 rotates, the coil spring is driven to compress to store energy, and at the moment, the wire 31 is pulled out, so that the clamping assembly 3 is close to a measuring object. When the three test clamps are connected with the measuring object, the rotating shaft 2 rotates by a certain angle, at the moment, because the self gravity of the alternating current withstand voltage test auxiliary device 10 is balanced with the force stored by the coil spring, at the moment, a tester can put down the alternating current withstand voltage test auxiliary device 10 to start testing the measuring object. After the test is finished, the lead 31 can be rapidly stored through the elastic force automatically stored by the coil spring, so that the function of automatically storing the lead 31 is achieved, the lead 31 is prevented from being manually stored, and the test efficiency is reduced. Of course, in other embodiments, the resetting element may be other members, and the embodiment does not specifically limit the specific type of the resetting element.
In order to facilitate the connection of the three test clips 32, three openings are formed on the housing 1 corresponding to the positions of the clamping assemblies 3, and the wires 31 pass through the openings to be connected with the test clips 32. One of the three test clips 32 is fixedly connected to the housing 1 and electrically connected to the other two test clips 32, and the other two test clips 32 are respectively connected to two ends of the wire 31, so that the two test clips 32 can be simultaneously stretched and simultaneously accommodated.
Of course, in the present embodiment, a plurality of coil springs and rotating shafts 2 may be further provided so that all three test clips 32 can be automatically recycled, and particularly, the present embodiment does not specifically limit the number thereof.
As shown in fig. 3, preferably, the ac withstand voltage test assisting apparatus 10 further includes an alarm component 5, and the alarm component 5 is electrically connected to the wire 31, and when the wire 31 is extended, the alarm component 5 gives an alarm.
Preferably, the alarm assembly 5 comprises a power supply member 51, an audible alarm member 52 and a sensing member 53, the power supply member 51 being connected to the housing 1. The acoustic alarm member 52 is electrically connected to the power supply member 51 so that the acoustic alarm member 52 emits a warning sound.
Further, in order to ensure that the sound alarm 52 generates a warning sound when the lead 31 extends out, the sensing element 53 is electrically connected to the sound alarm 52 and connected to the rotating shaft 2. When the sensing member 53 senses the torque of the rotating shaft 2, the sound alarm member 52 can be conducted with the power supply member 51.
Preferably, the sensing member 53 is a torque switch, the torque switch is a normally open switch, the lower end of the torque switch is not rotatable and is connected to the housing 1, and the upper end of the torque switch is connected to one end of the rotating shaft 2. When the lead 31 is used, the lead is pulled out to drive the whole rotating shaft 2 to rotate, the torque is sensed in the torque switch, and then the sound alarm piece 52 and the power supply piece 51 are conducted, so that an alarm sound is given out, and a tester is reminded of the process that the device is testing. When the lead 31 is accommodated in the accommodating cavity, the rotating shaft 2 is reset to the original position, the torque switch is disconnected, the sound alarm piece 52 is disconnected from the power supply piece 51, and the sound alarm piece 52 stops alarming so as to avoid missing the test clamp 32.
Example two
The ac withstand voltage test assisting apparatus 10 of the second embodiment is substantially the same as the first embodiment, except that the warning unit 5 of the ac withstand voltage test assisting apparatus 10 of the second embodiment is further provided with a lamp 54.
Specifically, in this embodiment, the warning subassembly 5 still includes light piece 54, light piece 54 and response 53 and power supply 51 electric connection, and set up in the casing 1 outside, when the moment of torsion of pivot 2 is sensed to response 53, light piece 54 can switch on with power supply 51, light piece 54 sends scintillation light, so that warn the experimenter, wire 31 is in the state of stretching out, finish up to the whole arrangement of wire 31, when pivot 2 no longer has the moment of torsion, can avoid centre gripping subassembly 3 to be left on the test object.
In other embodiments, the alarm assembly 5 may include an audible alarm element 52 and/or a light element 54, which is not limited in this embodiment, as long as the alarm assembly 5 is always in an alarm state when the wires 31 are not completely retracted and tidied.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides an alternating current withstand voltage test auxiliary device which characterized in that includes:
a housing (1) provided with an accommodating cavity;
the rotating shaft (2) is arranged in the accommodating cavity and is rotatably connected with the shell (1);
centre gripping subassembly (3), through wire (31) connect in pivot (2), wire (31) can wind pivot (2) rotate, make centre gripping subassembly (3) are kept away from or are close to the measuring object, centre gripping subassembly (3) include three experimental clamp (32), and are three experimental clamp (32) interval set up in casing (1) outside for the centre gripping or loosen the measuring object.
2. The ac withstand voltage test assisting apparatus according to claim 1, further comprising:
the reset assembly (4) is connected to the lead (31) and the rotating shaft (2) and is used for automatically receiving the lead (31).
3. The alternating current withstand voltage test auxiliary device according to claim 2, wherein the reset assembly (4) comprises:
the piece resets, reset the piece connect in pivot (2), when pivot (2) corotation, wire (31) are elongated, reset the piece stored energy, when pivot (2) reversal, reset the piece and drive pivot (2) reversal, make wire (31) automatic winding pivot (2).
4. The alternating current withstand voltage test auxiliary device according to claim 3, wherein the reset member is a coil spring.
5. An alternating current withstand voltage test assisting apparatus according to any one of claims 1 to 4, further comprising:
alarm component (5), with wire (31) electric connection, when wire (31) extension, alarm component (5) send out the warning.
6. The alternating current withstand voltage test auxiliary device according to claim 5, wherein the alarm assembly (5) comprises:
a power supply (51) connected to the housing (1);
the sound alarm piece (52), the said sound alarm piece (52) is connected electrically with the said power supply piece (51);
the sensing part (53), sensing part (53) with audible alarm spare (52) electric connection, and be connected to pivot (2), when sensing part (53) sense the moment of torsion of pivot (2), audible alarm spare (52) can with power supply (51) switch on.
7. The alternating current withstand voltage test auxiliary device according to claim 6, wherein the alarm assembly (5) further comprises:
the lamp light piece (54), the lamp light piece (54) with response piece (53) with power supply (51) electric connection to set up in the casing (1) outside, when response piece (53) sense the moment of torsion of pivot (2), lamp light piece (54) can with power supply (51) switch on.
8. The AC withstand voltage test auxiliary device according to claim 7, wherein the sensing member (53) is a torque switch.
9. An alternating current withstand voltage test assisting apparatus according to any one of claims 1 to 4, wherein the test clip (32) comprises:
the external handle is sleeved on the test clip (32) and is made of rubber materials.
10. An alternating current withstand voltage test assisting apparatus according to any one of claims 1 to 4, wherein the wire (31) is made of a copper wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110623782.4A CN113281627A (en) | 2021-06-04 | 2021-06-04 | Alternating current withstand voltage test auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110623782.4A CN113281627A (en) | 2021-06-04 | 2021-06-04 | Alternating current withstand voltage test auxiliary device |
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| Publication Number | Publication Date |
|---|---|
| CN113281627A true CN113281627A (en) | 2021-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110623782.4A Pending CN113281627A (en) | 2021-06-04 | 2021-06-04 | Alternating current withstand voltage test auxiliary device |
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| CN (1) | CN113281627A (en) |
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Application publication date: 20210820 |