CN113848396A - Device and method for measuring charge of insulating surface of oiled paper - Google Patents
Device and method for measuring charge of insulating surface of oiled paper Download PDFInfo
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- CN113848396A CN113848396A CN202111129541.0A CN202111129541A CN113848396A CN 113848396 A CN113848396 A CN 113848396A CN 202111129541 A CN202111129541 A CN 202111129541A CN 113848396 A CN113848396 A CN 113848396A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000009413 insulation Methods 0.000 claims abstract description 24
- 239000000523 sample Substances 0.000 claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 230000037303 wrinkles Effects 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims description 13
- 239000011810 insulating material Substances 0.000 description 4
- 238000000691 measurement method Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005697 Pockels effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/24—Arrangements for measuring quantities of charge
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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
- G01R31/12—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
- G01R31/1227—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 of components, parts or materials
- G01R31/1263—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 of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
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- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
An oil paper insulation surface charge measuring device and method belong to the field of charge measuring instruments. Comprises a base, a limiting device and a fixing device; and the upper end of the base is provided with a limiting device and a fixing device. The gear I is movably connected to the upper end of the bottom plate through a middle shaft, and the upper end of the gear I is fixedly connected with a screw rod; the connecting ring is connected to the screw rod through threads, and a connecting rod and a detection probe are fixedly connected to the outer circular surface of the connecting ring; the horizontal end of the L-shaped support plate is provided with a round hole I and a round hole II, and the inner wall of the round hole I is fixedly connected with a limiting block; the clamping block is fixedly connected to the side face of the L-shaped support plate. The oil paper can be wound on the vertical rod, the distance between the oil paper and the detection probe is kept unchanged while the wrinkles on the oil paper are unfolded, meanwhile, when the oil paper is too long, the oil paper can be unfolded in advance through the limiting device, and the phenomenon that the oil paper is knotted and wound together to generate large wrinkles is avoided.
Description
Technical Field
The invention relates to a device and a method for measuring charge on an oil paper insulation surface, belonging to the field of charge measuring instruments.
Background
At present, the measurement methods for the surface charge of insulating materials mainly include a dust map method, an optical measurement method based on the pockels effect, and an electrostatic probe method, wherein the electrostatic probe method is one of the most widely used measurement methods.
When the electrostatic probe method is adopted to measure the surface charge of the insulating material, the electrostatic probe needs to be perpendicular to the surface of the insulating material to be measured and keep a constant distance, and then the surface charge of the insulating material can excite an induced voltage on an induced conductor of the electrostatic probe, so that the measured data of the induced voltage is output.
When in detection, the lengths of the oiled papers are different, and the oiled papers are simultaneously and easily wrinkled, so that the vertical inaccuracy measured by the detection probe is caused, and therefore, the improvement is needed.
Disclosure of Invention
The present invention is directed to solve the above problems in the background art, and provides an apparatus and a method for measuring surface charge of oiled paper insulation.
The invention achieves the purpose, and adopts the following technical scheme:
a kind of oil paper insulating surface charge measuring device, including base, limiting device and fixing device; and the upper end of the base is provided with a limiting device and a fixing device.
A method of using an apparatus for measuring surface charge on paper oil insulation, the method comprising the steps of:
the method comprises the following steps: one end of the oiled paper is clamped between the movable plate I and the vertical rod, and the other end of the oiled paper is clamped between the clamping plate and the movable plate II;
step two: starting a motor, wherein the motor drives the vertical rod to rotate, and the oiled paper is wound on the outer circular surface of the vertical rod;
step three: and starting the motor and simultaneously turning on the detection probe to acquire data.
Compared with the prior art, the invention has the beneficial effects that: the oil paper can be wound on the vertical rod, the fold on the oil paper is unfolded, the distance between the oil paper and the detection probe is kept unchanged, and meanwhile, when the oil paper is too long, the oil paper can be unfolded in advance through the limiting device, so that the oil paper is prevented from being knotted and wound together to generate large folds.
Drawings
FIG. 1 is a front view of an apparatus for measuring surface charge on paper-coated insulation according to the present invention;
FIG. 2 is a front view of a base of an apparatus for measuring surface charge on paper-oil insulation according to the present invention;
FIG. 3 is a bottom view of an L-shaped support plate of an apparatus for measuring surface charge on paper oil insulation according to the present invention;
FIG. 4 is a front view of a restraining device of an oiled paper insulation surface charge measuring device according to the present invention;
FIG. 5 is a diagram showing the shape of an arc-shaped groove of the oil paper insulation surface charge measuring device of the present invention;
FIG. 6 is a front view of a fixing device of the oil paper insulation surface charge measuring device of the present invention;
FIG. 7 is a side view of a clamp plate of an apparatus for measuring surface charge on paper oil insulation according to the present invention;
FIG. 8 is a top view of a carriage of an apparatus for measuring surface charge on paper oil insulation according to the present invention;
fig. 9 is a schematic structural diagram of the oiled paper winding on the movable rod of the oiled paper insulation surface charge measuring device of the invention.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying 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 invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
The first embodiment is as follows: as shown in fig. 1 to 9, the present embodiment describes an oiled paper insulation surface charge measuring apparatus, which includes a base 1, a limiting device 2, and a fixing device 3; the upper end of the base 1 is provided with a limiting device 2 and a fixing device 3.
The second embodiment is as follows: as shown in fig. 1 to 9, the present embodiment is further described with respect to the first embodiment, where the base 1 includes a pillar 11, a bottom plate 12, a gear i 13, a supporting rod 14, a slider i 16, a connecting rod 17, a connecting ring 18, a detecting probe 19, a screw 110, a movable plate i 111, a fastening bolt i 112, a vertical rod 113, an L-shaped supporting plate 114, a limiting baffle 116, a limiting block 117, a motor 119, a spring i 121, a gear ii 122, a slider ii 123, and a fixture block 124; the lower end of the bottom plate 12 is fixedly connected with a strut 11, one side of the top end of the bottom plate 12 is fixedly connected with a supporting rod 14, the other side of the top end of the bottom plate 12 is fixedly connected with an L-shaped supporting plate 114, and one side, close to the L-shaped supporting plate 114, of the top end of the bottom plate 12 is provided with a sliding groove I120; one end of the spring I121 is fixedly connected into the sliding groove I120; the gear I13 is movably connected to the upper end of the bottom plate 12 through a middle shaft, and the upper end of the gear I13 is fixedly connected with a screw rod 110; the connecting ring 18 is connected to the screw 110 through threads, and the connecting rod 17 and the detection probe 19 are fixedly connected to the outer circular surface of the connecting ring 18; the other end of the connecting rod 17 is fixedly connected with a sliding block I16; a sliding groove II 15 is formed in the side face of the vertical rod 14, and the sliding groove II 15 is in sliding fit with the sliding block I16; the motor 119 is fixedly connected to the lower end of the bottom plate 12 through a support, an output shaft of the motor 119 penetrates through the bottom plate 12 and is fixedly connected with a gear II 122, the gear II 122 is meshed with the gear I13, the upper end of the gear II 122 is fixedly connected with a vertical rod 113, and the side face of the vertical rod 113 is fixedly connected with a movable plate I111 through a fastening bolt I112; a round hole I115 and a round hole II 118 are arranged at the horizontal end of the L-shaped support plate 114, and a limiting block 117 is fixedly connected to the inner wall of the round hole I115; the limiting baffle 116 is fixedly connected to the lower end of the L-shaped support plate 114; the sliding block II 123 is in sliding fit with the sliding groove I120, and the other end of the spring I121 is fixed to the side face of the sliding block II 123; the latch 124 is fixedly connected to the side of the L-shaped bracket 114.
The third concrete implementation mode: as shown in fig. 1 to 9, this embodiment is further described with respect to the first embodiment, the limiting baffle 116 is an elliptical ring, and an included angle smaller than 90 ° exists between a long axis of the limiting baffle 116 and a side line of the horizontal end of the L-shaped support plate 114. An included angle is formed between the horizontal ends of the limit baffle 116 and the L-shaped support plate 114, so that when the connecting rod 22 drives the movable rods 27 to rotate 90 degrees, a distance is left between the two movable rods 27 and the end point of the long shaft, and when the two movable rods 27 move in opposite directions, each movable rod 27 cannot move to the original position, so that the oiled paper 4 is wound on the two movable rods 27 to influence the detection.
The fourth concrete implementation mode: as shown in fig. 1-9, this embodiment is further described with respect to the first embodiment, the detecting probe 19 is located between the screw 110 and the vertical rod 113, and the detecting probe 19 faces the vertical rod 13.
The fifth concrete implementation mode: as shown in fig. 1 to 9, this embodiment is further described as a first embodiment, and the limiting device 2 includes a gear iii 21, a connecting rod 22, a limiting rod 24, a sliding rod 26, a movable rod 27, a spring ii 28, a gear iv 29, a threaded cylinder 210 and a transmission rod 211; the connecting rod 22 is connected with a gear III 21 through a key, the lower end of the connecting rod 22 is fixedly connected with a limiting rod 24, and an arc-shaped groove 23 is formed in the outer circular surface of the connecting rod 22; two vertical through holes 25 are symmetrically arranged on the limiting rod 24; the upper end of the movable rod 27 is fixedly connected with a sliding rod 26, and the sliding rod 26 is in sliding fit with the through hole 25; one end of the spring II 28 is fixedly connected in the through hole 25, and the other end of the spring II 28 is fixedly connected to the side face of the sliding rod 26; the lower end of the gear IV 29 is fixedly connected with a threaded cylinder 210, and the gear IV 29 is meshed with a gear III 21; the transmission rod 211 is located inside the threaded cylinder 210, the transmission rod 211 is in threaded fit with the threaded cylinder 210, a sliding rail 212 parallel to the central axis is further arranged on the outer circular surface of the transmission rod 211, and the sliding rail 212 is in sliding fit with the fixture block 124; the connecting rod 22 is connected in the round hole I115 through a bearing, and the arc-shaped groove 23 is in sliding fit with the limiting block 117; the threaded cylinder 210 is connected in the round hole II 118 through a bearing; the spring II 28 is always in a stretching state; the sliding rod 26 is always contacted with the outer side face of the limit baffle 116 under the elastic force of the spring II 28. The transmission rod 211 is inserted into the circular hole iii 32 by moving downward when the connecting rod 22 rotates, and the fixing device 3 is prevented from moving.
The sixth specific implementation mode: as shown in fig. 1-9, the present embodiment is further described with respect to the first embodiment, and the central angle of the arc-shaped groove 23 is smaller than or equal to 90 °.
The seventh embodiment: as shown in fig. 1 to 9, this embodiment is further described with respect to the first embodiment, the fixing device 3 includes a sliding seat 31, a spring iii 34, a push rod 35, an arc plate 38, a limit fixing rod 39, a rotating rod 310, a movable plate ii 311, a fastening bolt ii 312, a limit rectangular plate 313, a clamping plate 314 and a sliding block iii 315; the sliding seat 31 is fixedly connected to the upper end of the sliding block II 123, a groove I37 is formed in one end, facing the vertical rod 113, of the sliding seat 31, a groove II 36 is formed in the top end of the sliding seat 31, the groove I37 is communicated with the groove II 36, a round hole III 32 in sliding fit with the transmission rod 211 is further formed in the top end of the sliding seat 31, and a slide way 33 is arranged on the side face of the groove II 36; one end of the push rod 35 is in sliding fit with the slide way 33, and the other end of the push rod 35 is fixedly connected with an arc-shaped plate 38; one end of the spring III 34 is fixedly connected in the slideway 33, and the other end of the spring III 34 is fixedly connected on the push rod 35; the arc-shaped plate 38 is in sliding fit with the groove I37; the limit rectangular plate 313 is fixedly connected to the side surface of the push rod 35; the rotating rod 310 is connected in the groove II 36 through a middle shaft, and a coil spring is sleeved on the middle shaft; the limiting fixing rod 39 is fixedly connected to the upper end of the sliding seat 31, and a limiting groove is formed in the side surface of the limiting fixing rod 39; the clamping plate 314 is positioned at the upper end of the limiting fixing rod 39, a sliding block III 315 is arranged on the clamping plate 314, and the sliding block 315 is in sliding fit with the limiting groove; the movable plate II 311 is connected to the side surface of the clamping plate 314 through a fastening bolt II 312; when the rotating rod 310 is in a vertical state, the part of the rotating rod 310 at the lower end of the central shaft is in contact with the limiting rectangular plate 313, and the part of the rotating rod 310 at the upper end of the central shaft is in contact with the clamping plate 314; one end of the oiled paper 4 is clamped between the movable plate I111 and the vertical rod 113, and the other end of the oiled paper 4 is clamped between the clamping plate 314 and the movable plate II 311. When the arc plate 38 does not contact the gear II 122, the oiled paper 4 drags the fixing device 3 to move integrally to the direction of the vertical rod 113, when the arc plate 38 contacts the gear II 122 and is completely positioned in the groove I37, the clamping plate 314 and the movable plate II 311 move to the direction of the vertical rod 113 along the limiting fixing rod 39, so that the oiled paper 4 is wound on the vertical rod 113 as long as possible, and the detection quality is ensured.
The specific implementation mode is eight: as shown in fig. 1 to 9, the present embodiment describes a method for using an oiled paper insulation surface charge measurement apparatus, the method including the steps of:
the method comprises the following steps: one end of the oiled paper 4 is clamped between the movable plate I111 and the vertical rod 113, and the other end of the oiled paper 4 is clamped between the clamping plate 314 and the movable plate II 311;
step two: starting the motor 119, wherein the motor 119 drives the vertical rod 113 to rotate, and the oiled paper 4 is wound on the outer circular surface of the vertical rod 113;
step three: the motor 119 is started and the detection probe 19 is turned on to collect data.
The specific implementation method nine: as shown in fig. 1 to 9, this embodiment is a further description of an eighth embodiment, and when the length of the oiled paper 4 is too long, the restriction device 2 is rotated to completely unfold the oiled paper 4 and reduce wrinkles.
The working principle of the invention is as follows: when the oil paper pressing device is used, one end of the oil paper 4 is clamped between the movable plate I111 and the vertical rod 113, the other end of the oil paper 4 is clamped between the clamping plate 314 and the movable plate II 311 and is clamped through the fastening bolt I112 and the fastening bolt II 312 respectively, then the motor 119 is started, the motor 119 drives the gear II 122 to rotate, so as to drive the vertical rod 113 to rotate, the vertical rod 113 winds the oil paper 4 on the outer circular surface of the vertical rod 113, the other end of the oil paper 4 drives the clamping plate 314 and the movable plate II 311 to move towards the vertical rod 113, the clamping plate 314 and the movable plate II 311 push the rotating rod 310, the lower end of the rotating rod 310 is in contact with the limiting rectangular plate 313, meanwhile, the limiting rectangular plate 313 is fixedly connected with the push rod 35, and the spring III 34 fixedly connected with the push rod 35 are in a compressed state, so that the push rod 35 and the limiting rectangular plate 313 cannot slide towards the slideway 33 under the action of the spring III 34, and the rotating rod 310 cannot rotate, therefore, the clamping plate 314 and the movable plate II 311 cannot slide relative to the limiting fixing rod 39, so that the clamping plate 314 and the movable plate II 311 push the rotating rod 310 to move, and further the sliding seat 31 is driven by the central shaft of the rotating rod 310 to slide, the sliding seat 31 drives the sliding block II 123 to slide, the sliding block II 123 compresses the spring I121, until the arc plate 38 contacts with the gear II 122, the gear II 122 pushes the arc plate 38 to slide towards the sliding seat 31, the sliding seat 31 pushes the push rod 35 to further compress the spring III 34, and simultaneously drives the limiting rectangular plate 313 to move, and the limiting rectangular plate 313 moves, so that the rotating rod 310 rotates under the push of the clamping plate 314 and the movable plate II 311, when the arc plate 38 completely moves into the groove I37, the limiting fixing rod 39 is pressed against the outer side of the gear II 122, and at the clamping plate 314 and the movable plate II 311 slide towards the vertical rod 113 relative to the limiting fixing rod 39, so that the oilpaper 4 is completely wound on the vertical rod 113 in a spiral shape, when the vertical rod 113 rotates to wind the oil paper 4 on the outer side of the vertical rod, the gear II 122 also drives the gear I13 to rotate, the gear I13 drives the screw rod 110 to rotate, the screw rod 110 drives the connecting ring 18 to move downwards, and further drives the detection probe 19 to move downwards along with the winding of the oil paper 4, so that the distance between the detection probe 19 and the oil paper 4 is kept unchanged, meanwhile, the oil paper 4 is always in a tensioning state under the influence of the elastic force of the spring I121, wrinkles generated when the oil paper 4 is wound on the vertical rod 113 can be reduced, and the detection structure is prevented from being influenced;
when the oiled paper 4 is too long, after the two ends of the oiled paper 4 are clamped, the middle position of the oiled paper 4 is placed between the two movable rods 27, then the connecting rod 22 is manually rotated, the connecting rod 22 drives the limiting rod 24 to rotate, the limiting rod 24 drives the sliding rod 26 and the movable rod 27 to move through the through hole 25, when the limiting rod 24 drives the sliding rod 26 to move, because the sliding rod 26 is always in contact with the short shaft of the limiting baffle 116, when the sliding rod 26 moves to the long shaft of the limiting baffle 116, the distance between the two movable rods 27 is increased, so that the movable rod 27 can prop longer oiled paper 4 open, the oiled paper 4 is propped open according to the mode shown in figure 9, the connecting rod 22 also drives the gear iii 21 to rotate, the gear iii 21 drives the gear iv 29 to rotate, the gear iv 29 drives the threaded cylinder 210 to rotate, further drives the transmission rod 211 to move downwards, so that the transmission rod 211 is inserted into the round hole iii 32 to limit the movement of the fixing device 3, when needs examine, starter motor 119 slowly loosens the hand of holding connecting rod 22, through the rotational speed of friction control connecting rod 22 between hand and the connecting rod 22, avoids connecting rod 22 rotational speed too fast to lead to the oiled paper 4 to drop, after oiled paper 4 becomes a straight line once more, operate according to above-mentioned mode can, not only can avoid longer oiled paper 4 folding, the winding fold to appear, can practice thrift the space that detects the needs moreover.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. The utility model provides an oiled paper insulation surface charge measuring device which characterized in that: comprises a base (1), a limiting device (2) and a fixing device (3); the upper end of the base (1) is provided with a limiting device (2) and a fixing device (3).
2. The oiled paper insulation surface charge measuring device of claim 1, wherein: the base (1) comprises a support column (11), a bottom plate (12), a gear I (13), a support rod (14), a sliding block I (16), a connecting rod (17), a connecting ring (18), a detection probe (19), a screw rod (110), a movable plate I (111), a fastening bolt I (112), a vertical rod (113), an L-shaped support plate (114), a limiting baffle (116), a limiting block (117), a motor (119), a spring I (121), a gear II (122), a sliding block II (123) and a clamping block (124); the lower end of the bottom plate (12) is fixedly connected with a support column (11), one side of the top end of the bottom plate (12) is fixedly connected with a support rod (14), the other side of the top end of the bottom plate (12) is fixedly connected with an L-shaped support plate (114), and one side, close to the L-shaped support plate (114), of the top end of the bottom plate (12) is provided with a sliding groove I (120); one end of the spring I (121) is fixedly connected into the sliding groove I (120); the gear I (13) is movably connected to the upper end of the bottom plate (12) through a middle shaft, and the upper end of the gear I (13) is fixedly connected with a screw rod (110); the connecting ring (18) is connected to the screw rod (110) through threads, and a connecting rod (17) and a detection probe (19) are fixedly connected to the outer circular surface of the connecting ring (18); the other end of the connecting rod (17) is fixedly connected with a sliding block I (16); a sliding groove II (15) is formed in the side face of the vertical rod (14), and the sliding groove II (15) is in sliding fit with the sliding block I (16); the motor (119) is fixedly connected to the lower end of the bottom plate (12) through a support, an output shaft of the motor (119) penetrates through the bottom plate (12) and is fixedly connected with a gear II (122), the gear II (122) is meshed with the gear I (13), the upper end of the gear II (122) is fixedly connected with a vertical rod (113), and the side face of the vertical rod (113) is fixedly connected with a movable plate I (111) through a fastening bolt I (112); a round hole I (115) and a round hole II (118) are arranged at the horizontal end of the L-shaped support plate (114), and a limiting block (117) is fixedly connected to the inner wall of the round hole I (115); the limiting baffle (116) is fixedly connected to the lower end of the L-shaped support plate (114); the sliding block II (123) is in sliding fit with the sliding groove I (120), and the other end of the spring I (121) is fixed to the side face of the sliding block II (123); the fixture block (124) is fixedly connected to the side surface of the L-shaped support plate (114).
3. The oiled paper insulation surface charge measuring device of claim 2, wherein: the limiting baffle (116) is in an elliptical ring shape, and an included angle smaller than 90 degrees is formed between the long axis of the limiting baffle (116) and the side line of the horizontal end of the L-shaped support plate (114).
4. The oiled paper insulation surface charge measuring device of claim 2, wherein: the detection probe (19) is positioned between the screw rod (110) and the vertical rod (113), and the detection probe (19) faces the vertical rod (13).
5. The oiled paper insulation surface charge measuring device of claim 2, wherein: the limiting device (2) comprises a gear III (21), a connecting rod (22), a limiting rod (24), a sliding rod (26), a movable rod (27), a spring II (28), a gear IV (29), a threaded cylinder (210) and a transmission rod (211); the connecting rod (22) is connected with a gear III (21) through a key, the lower end of the connecting rod (22) is fixedly connected with a limiting rod (24), and an arc-shaped groove (23) is formed in the outer circular surface of the connecting rod (22); two vertical through holes (25) are symmetrically arranged on the limiting rod (24); the upper end of the movable rod (27) is fixedly connected with a sliding rod (26), and the sliding rod (26) is in sliding fit with the through hole (25); one end of the spring II (28) is fixedly connected in the through hole (25), and the other end of the spring II (28) is fixedly connected to the side face of the sliding rod (26); the lower end of the gear IV (29) is fixedly connected with a threaded cylinder (210), and the gear IV (29) is meshed with a gear III (21); the transmission rod (211) is positioned inside the threaded cylinder (210), the transmission rod (211) is in threaded fit with the threaded cylinder (210), a sliding rail (212) parallel to the central shaft is further arranged on the outer circular surface of the transmission rod (211), and the sliding rail (212) is in sliding fit with the clamping block (124); the connecting rod (22) is connected in the round hole I (115) through a bearing, and the arc-shaped groove (23) is in sliding fit with the limiting block (117); the threaded cylinder (210) is connected in the round hole II (118) through a bearing; the spring II (28) is always in a stretching state; the sliding rod (26) is always in contact with the outer side face of the limiting baffle (116) under the elastic force action of the spring II (28).
6. The apparatus for measuring the charge on the surface of the oiled paper insulation according to claim 5, wherein: the central angle corresponding to the arc-shaped groove (23) is less than or equal to 90 degrees.
7. The apparatus for measuring surface charge on paper-oil insulation according to claim 6, wherein: the fixing device (3) comprises a sliding seat (31), a spring III (34), a push rod (35), an arc-shaped plate (38), a limiting fixing rod (39), a rotating rod (310), a movable plate II (311), a fastening bolt II (312), a limiting rectangular plate (313), a clamping plate (314) and a sliding block III (315); the sliding seat (31) is fixedly connected to the upper end of the sliding block II (123), one end, facing the vertical rod (113), of the sliding seat (31) is provided with a groove I (37), the top end of the sliding seat (31) is provided with a groove II (36), the groove I (37) is communicated with the groove II (36), the top end of the sliding seat (31) is further provided with a round hole III (32) in sliding fit with the transmission rod (211), and the side face of the groove II (36) is provided with a slide way (33); one end of the push rod (35) is in sliding fit with the slide way (33), and the other end of the push rod (35) is fixedly connected with an arc-shaped plate (38); one end of the spring III (34) is fixedly connected in the slide way (33), and the other end of the spring III (34) is fixedly connected on the push rod (35); the arc-shaped plate (38) is in sliding fit with the groove I (37); the limiting rectangular plate (313) is fixedly connected to the side face of the push rod (35); the rotating rod (310) is connected in the groove II (36) through a middle shaft, and a coil spring is sleeved on the middle shaft; the limiting fixing rod (39) is fixedly connected to the upper end of the sliding seat (31), and a limiting groove is formed in the side face of the limiting fixing rod (39); the clamping plate (314) is positioned at the upper end of the limiting fixing rod (39), a sliding block III (315) is arranged on the clamping plate (314), and the sliding block (315) is in sliding fit with the limiting groove; the movable plate II (311) is connected to the side surface of the clamping plate (314) through a fastening bolt II (312); when the rotating rod (310) is in a vertical state, the part of the rotating rod (310) positioned at the lower end of the middle shaft is in contact with the limiting rectangular plate (313), and the part of the rotating rod (310) positioned at the upper end of the middle shaft is in contact with the clamping plate (314); one end of the oiled paper (4) is clamped between the movable plate I (111) and the vertical rod (113), and the other end of the oiled paper (4) is clamped between the clamping plate (314) and the movable plate II (311).
8. The use method of the oiled paper insulation surface charge measuring device according to claim 7, characterized in that: the using method comprises the following steps:
the method comprises the following steps: one end of the oiled paper (4) is clamped between the movable plate I (111) and the vertical rod (113), and the other end of the oiled paper (4) is clamped between the clamping plate (314) and the movable plate II (311);
step two: starting a motor (119), wherein the motor (119) drives the vertical rod (113) to rotate, and the oiled paper (4) is wound on the outer circular surface of the vertical rod (113);
step three: and starting the motor (119) and simultaneously turning on the detection probe (19) to acquire data.
9. The use method of the oiled paper insulation surface charge measuring device according to claim 8, characterized in that: when the length of the oiled paper (4) is too long, the limiting device (2) is rotated, so that the oiled paper (4) is completely unfolded, and wrinkles are reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111129541.0A CN113848396B (en) | 2021-09-26 | 2021-09-26 | Device and method for measuring electric charge on insulating surface of oiled paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111129541.0A CN113848396B (en) | 2021-09-26 | 2021-09-26 | Device and method for measuring electric charge on insulating surface of oiled paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113848396A true CN113848396A (en) | 2021-12-28 |
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| CN117607543A (en) * | 2023-11-24 | 2024-02-27 | 国网黑龙江省电力有限公司 | Device and method for measuring line impedance of each node of transformer area |
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| CN113848396B (en) | 2024-04-05 |
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