CN103219142A - High-voltage split-core type current transformer - Google Patents
High-voltage split-core type current transformer Download PDFInfo
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- CN103219142A CN103219142A CN201310110020XA CN201310110020A CN103219142A CN 103219142 A CN103219142 A CN 103219142A CN 201310110020X A CN201310110020X A CN 201310110020XA CN 201310110020 A CN201310110020 A CN 201310110020A CN 103219142 A CN103219142 A CN 103219142A
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- seat hole
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Abstract
The invention relates to a high-voltage split-core type current transformer, which comprises a shell, a movable clamp arm, a seat hole, a sliding plate, a torsion spring and a stop bar, wherein at least the circuit of the current transformer is installed in the shell; the movable clamp arm is connected onto the shell through a hinge, and a line passing channel is formed between the movable clamp arm and a fixed clamp arm on the shell when the movable clamp arm turns to a closed state; the seat hole is provided with a circular entrance and a circular exit on the shell, the axis of the seat hole is vertical to the axis of the hinge, and a circumferential-surrounded groove is arranged in the inner wall near the entrance; the sliding plate is installed on the shell in a plane vertical to the axis of the seat hole and is provided with a lapping part, a release port and a triggering part; the torsion spring is installed on the shell, and the restoring force of the torsion spring forces the movable clamp arm to turn to the closed state; when the triggering part is positioned in the exit, one end of the torsion spring can be butted against the lapping part; when the triggering part is stressed to slide to the outer part of the exit, one end of the torsion spring is separated from the lapping part and is in a free state; the stop bar extends out from the movable clamp arm; when the movable clamp arm turns to a fully open state, the stop bar is positioned at one side of the axis of the seat hole; and when the movable clamp arm turns to a fully closed state, the stop bar is positioned at the other side of the axis of the seat hole. The high-voltage split-core type current transformer can be installed on or taken down from a high voltage cable through a high-voltage insulation operating bar.
Description
Technical field
The present invention relates to a kind of high-voltage power metering instrument, specifically, is the high pressure split core type current transformer that the electric current to high-tension cable measures.
Background technology
Granted publication number discloses a kind of electric-power metering monitor system and measure of supervision in the patent of invention of CN101266263B.This system comprises electric energy metering machine and metrological supervision main frame, the electric energy of difference calculating transformer first side and the electric energy of second side, the metrological supervision host stores has a threshold value, and the relative difference of calculating transformer both sides energy data, generate warning message during greater than threshold value at relative difference, communication module can send warning message.This method is included in electric energy metering machine and metrological supervision main frame is installed on the transformer, the electric energy of difference calculating transformer both sides, the metrological supervision host stores has a threshold value, and the relative difference of calculating transformer both sides energy data, the metrological supervision main frame judges that whether relative difference is greater than threshold value, send warning message to Surveillance center in this way, it can effectively supervise electricity filching behavior, and reduces the cost of Surveillance center.
The concrete mode of obtaining electric energy numerical value based on said system and method is the current value of obtaining on the high-tension cable, and calculates electric energy by current value.And the method that obtains current value is to use the high pressure split core type current transformer, and present high pressure split core type current transformer has a housing, and current transformer circuit, radio transmitter, power circuit and solar panel etc. are installed in the housing.The high pressure split core type current transformer is installed on high-tension cable or pulled down, this common live line working means and equipment that must have a power failure or take than complexity.
Summary of the invention
Main purpose of the present invention provide a kind of under charged situation, be convenient to high-tension cable in the high pressure split core type current transformer that measures of electric current.
For achieving the above object, high pressure split core type current transformer provided by the invention comprises a housing, and the circuit of current transformer is housed in the housing at least.By being hinged and connected to the movable pliers on the housing, when movable pliers goes to closure state, and form a cable-through hole between the fixed pliers on the housing.A seat hole, the seat hole is formed with circular inlet and circular outlet on housing, the axis and the axis normal of hinge in seat hole, near the inwall that enters the mouth be provided with circumferential hoop around groove.Slide plate be installed in seat axially bored line vertical plane in housing on, slide plate is formed with the spring portion that takes, liberation port and triggering portion.Be installed in the torsion spring on the housing, the restoring force of torsion spring forces movable pliers to go to closure state, and when triggering portion was positioned at outlet, an end of torsion spring can be pressed on the clinch, stressed during to the outer slip of outlet when triggering portion, an end of torsion spring breaks away from clinch and is in free state.Also have the gear-stopping bar that automatic tong arm stretches out, when movable pliers went to complete open configuration, gear-stopping bar was positioned at a side of the axis in a hole, and when movable pliers went to complete closure state, gear-stopping bar was positioned at the opposite side of the axis in a hole.
By above scheme as seen, when slide plate is in different positions, movable pliers is in opens or closed two kinds of different operating states, use special-purpose High-Voltage Insulation action bars that its control is become possibility, be convenient under charged situation, carry out the measurement of high-tension cable electric current thereby give.
Further scheme is to comprise that is also pressed a cable torsion spring, presses the cable torsion spring to be installed on the housing, and its restoring force forces movable pliers to go to closure state.Press an end of cable torsion spring can be pressed on the clinch, when triggering portion is stressed when sliding outside described outlet, presses an end of cable torsion spring on clinch, to break away from and be in free state.Press the other end of cable torsion spring to ride on the described movable pliers, when movable pliers went to closure state, at least a portion of the other end was positioned at passing channel.Adopt under this scheme situation, that the diameter of cable-through hole can be designed is relatively large, presses cable torsion spring end that high-tension cable is oppressed by the part that is positioned at passing channel, thereby prevents high pressure split core type current transformer play on high-tension cable.
Another further scheme is also to be provided with a wear strip between slide plate and described housing, and wear strip is fixed on the housing, and outlet is positioned on the described wear strip.Usually housing all adopts insulating material to make, and is not very good on anti-wear performance, for prevent slide plate place housing than quick-wearing, on housing, fix a wear strip corresponding with slide plate, can address this problem effectively.
A further scheme is the diameter of the diameter in exit less than the porch again.With the diameter less than the porch of the diameter in exit design, can be convenient to the moulding of High-Voltage Insulation action bars housing by the end face realization of High-Voltage Insulation action bars housing and the axial location between the high pressure split core type current transformer.
Further scheme is to be provided with anti-slop serrations on the jaw surf zone of fixed pliers.When this can make jaw closed, high-tension cable was held more firmly.
Description of drawings
Fig. 1 is the stereogram that embodiment of the invention movable pliers is in open configuration;
Fig. 2 is the stereogram that embodiment of the invention movable pliers is in closure state;
Fig. 3 crosses the seat axially bored line and perpendicular to the profile of hinge line among Fig. 1;
Fig. 4 is the stereogram of torsion spring;
Fig. 5 is the stereogram of pressing the cable torsion spring;
Fig. 6 torsion spring and the stereogram of pressing after the cable torsion spring makes up;
Fig. 7 is the slide plate stereogram that has amplified;
Fig. 8 is that the embodiment of the invention and High-Voltage Insulation action bars are used the stereogram under the state;
Fig. 9 to 12 is various state diagrams of the embodiment of the invention and High-Voltage Insulation action bars compounding practice process.
Embodiment
Referring to Fig. 1, the movable pliers 20 that Fig. 1 shows a high pressure split core type current transformer 1 is in the stereogram of open configuration, the circuit part of current transformer is housed in its housing 10, radio transmitter also is housed, be used for and be sent to ground at the aerial current parameters that obtains of height.Movable pliers 20 is installed on the housing 10 by hinge.Torsion spring 50 is installed on the hinge, and invisible among one end Fig. 1, the other end 51 is fixed on the movable pliers 20.Press cable torsion spring 60 also to be installed on the hinge, invisible among one end Fig. 1, the other end 61 rides over taking on the spring base 21 of stretching out on the movable pliers 20.Also be provided with gear-stopping bar 70 on the movable pliers 20.Be formed with fixed pliers 11 on housing 10, its jaw surf zone promptly is provided with anti-slop serrations 12 by the contact area of a clamping high-tension cable.
Referring to Fig. 2, the stereogram when Fig. 2 shows movable pliers and goes to closure state has formed a cable-through hole 80 between movable pliers 20 and the fixed pliers.
Referring to Fig. 3, this was the section of seat hole 30 axis, and this section is also perpendicular to the axis that cuts with scissors 13.As seen from Figure 3, seat 30 tops, hole are fixed with a wear strip 34, and wear strip 34 upper surfaces have formed the outlet 32 in seat hole, and seat hole 30 is formed with inlet 31 at the lower surface of housing, the diameter of outlet 32 is formed with the groove 33 of all ring-types less than the diameter of inlet 31 on the inwall near inlet 31.Slide plate 40 has the spring of taking portion 41, liberation port 42 and triggering portion 43 from left to right, and slide plate 40 is installed on the housing, the axis normal in this place's housing face and seat hole 30.Movable pliers 20 is connected on the housing 10 by cutting with scissors 13, torsion spring 50, pressure cable torsion spring 60 also are fixed on the hinge 13, and an end 52 of torsion spring 50 rides in the spring portion 41, and the other end 51 is fixed on the movable pliers 20, press an end 62 of cable torsion spring 60 to ride in the spring portion 41, the other end 61 rides on the spring base 21.
Referring to Fig. 4, Fig. 4 has reflected the relative position angle at two ends when torsion spring 50 is in free state.
Referring to Fig. 5, Fig. 5 has reflected the structure when pressing cable torsion spring 60 to be in free state.
Referring to Fig. 6, Fig. 6 has reflected the structure when being in free state after torsion spring makes up with pressure cable torsion spring.
Referring to Fig. 7, Fig. 7 has reflected the structure of slide plate 40, take spring portion 41 at the left end of slide plate 40, there is triggering portion 43 on the right side, is formed with an emptying aperture as release portion 42 between spring portion 41 and the triggering portion 43 taking, in addition, also be provided with a long slide opening 44 of arranging along glide direction, during installation, a traveller will pass slide opening 44 and be fixed on housing 10 or the wear strip 34, horizontally slip with guiding plate 40 relative housings 10 or wear strip 34.
The use operation of the embodiment of the invention is described below in conjunction with a High-Voltage Insulation action bars.
Referring to Fig. 8, the part of High-Voltage Insulation action bars 2 has been shown among Fig. 8, promptly only provided the structure of the operating side that contacts with the high pressure split core type current transformer, omit by the long holding end that is threaded its lower end.When high pressure split core type current transformer 1 being carried out laying on high-tension cable or take off, a hole 30 must be inserted in the operating side of High-Voltage Insulation action bars 2.
Referring to Fig. 9, the state when Fig. 9 shows and with High-Voltage Insulation action bars 2 high pressure split core type current transformer 1 is sent to high-tension cable 3.Introduce the structure of High-Voltage Insulation action bars 2 earlier, omitted the elongated portion that housing 210 bottoms comprise holding end among Fig. 9, this part becomes an elongated integral body by making housing 210 after being threaded, and certainly, is positioned at its inner adjusting rod 220 and comprises that a terminal part also omitted thereupon.
Adjusting rod 220 be one be positioned at housing 210 and can be vertically the assembly that slides of housing 210 relatively, this assembly is divided into gag lever post 221, positive frustum section 222, application of force section 223 and lever piece from top to bottom.Wherein, have one section and housing 210 inwall matched in clearance in the lever piece at least, and to formation rigid holders such as application of force sections 223, other parts of lever piece are until proximal end can be thinner bar.The end that it will be understood by those skilled in the art that adjusting rod can be to pass the chute joystick that is provided with on the housing 210 holding end sidewalls, and chute length in the axial direction then can design according to the practical operation stroke of adjusting rod 220.
Below operation principle is illustrated, when the operating side of High-Voltage Insulation action bars 2 was inserted in the seat hole of high pressure split core type current transformer 1 bottom, shoulder made both axially in place.At this moment, the restoring force of torsion spring 50 and pressure cable torsion spring 60 has around hinge 13 movable pliers 20 and rotates and the trend of closed jaw, yet the right side that has withstood on gear-stopping bar 70 owing to gag lever post 221 has stoped movable pliers 20 to rotate.On the other hand, on 1 hole inwall of high pressure split core type current transformer, be provided with a circle groove 33 of horizontal circle, lock head 233 is under the extruding of application of force section 223, stretch into groove 33, make High-Voltage Insulation action bars 2 relatively high pressure split core type current transformers 1 in axial locking, both can not break away from the axial direction mutually.When this moment, adjusting rod 220 relative housings 210 spurred downwards, when gag lever post 221 tops run under the gear-stopping bar 70, when losing barrier effect, under the effect of torsion spring 50, pressure cable torsion spring 60 restoring forces, the jaw closure simultaneously, presses the other end such as Fig. 9 of cable torsion spring 60 to show and will be in the passing channel, thereby cable 4 can be compressed, make high pressure split core type current transformer 1 relative cable 3 fix.
Referring to Figure 10, this is the state after high pressure split core type current transformer 1 relative cable is fixed, and has omitted cable 3 among Figure 10, and at this moment, stop bar 70 has been positioned at an axially bored line from Fig. 9 left side state becomes the right side state that is positioned at.Because application of force section 223 has still been executed extruding force to elastic rod, so lock head 233 still is positioned at groove 30, does not promptly have release.Adjusting rod will enter the state that Figure 11 shows after continuing pulling downwards again.
Referring to Figure 11, at this moment, application of force section 223 has broken away from the contact to elastic rod, because the maximum gauge of positive frustum section 222 is less relatively, lock head 233 has promptly been removed locking, at this moment retracting under the effect of elastic rod elastic restoring force within housing 210 outer walls, just be recoverable to High-Voltage Insulation action bars 2, finished the task that high pressure split core type current transformer 1 is fixed on cable.
Need be when cable takes off with high pressure split core type current transformer 1, the first step, the holding end of a hand-held High-Voltage Insulation action bars 2, the operating side being aimed at the seat hole 30 of high pressure split core type current transformer 1 bottom inserts, state after housing 210 relatively high pressure split core type current transformers 1 are in place can be referring to Figure 11, at this moment, the end of another manual manipulation adjusting rod 220, adjusting rod 220 relative housings 210 are upwards promoted, be understandable that, when being pushed to the state that Figure 10 shows, lock head 233 will enter lock-out state.
Referring to Figure 12, after upwards promoting again, the triggering portion 43 that the conical surface of positive frustum section 222 will radially promote, slide plate 40 is slided to the left, and then make torsion spring 50, pressure cable torsion spring 60 originally take an end of taking in the spring portion 41 of putting at slide plate 40 and be discharged in the release portion 42, be about to torsion spring 50 and press the restoring force of cable torsion spring to discharge.This moment drop-down High-Voltage Insulation action bars, movable pliers 20 opens including under the obstruction of cable to rotate naturally, can take off the mutual device 1 of high pressure pincer electric current from cable.
Claims (5)
1. the high pressure split core type current transformer comprises
Housing is equipped with the circuit of current transformer at least in the described housing;
It is characterized in that:
Movable pliers by being hinged and connected on the described housing, when described movable pliers goes to closure state, and forms a passing channel between the fixed pliers on the described housing;
Seat hole, described seat hole are formed with circular inlet and circular outlet on described housing, the axis and the axis normal of described hinge in described seat hole, the inwall of close described inlet be provided with circumferential hoop around groove;
Slide plate, be installed in one with described seat axially bored line vertical plane in described housing on, described slide plate is formed with the spring portion that takes, liberation port and triggering portion;
Torsion spring is installed on the described housing, and the restoring force of described torsion spring forces described movable pliers to go to closure state;
When described triggering portion was positioned at described outlet, an end of described torsion spring can be pressed on the described clinch, and when described triggering portion is stressed when sliding outside described outlet, an end of described torsion spring breaks away from described clinch and is in free state;
Gear-stopping bar, described gear-stopping bar stretches out from described movable pliers, and when described movable pliers went to complete open configuration, described gear-stopping bar was positioned at a side of the axis in described seat hole, when described movable pliers went to complete closure state, described gear-stopping bar was positioned at the opposite side of the axis in described seat hole.
2. high pressure split core type current transformer according to claim 1 is characterized in that:
Comprise that is also pressed a cable torsion spring, described pressure cable torsion spring is installed on the described housing, and its restoring force forces described movable pliers to go to closure state;
One end of described pressure cable torsion spring can be pressed on the described clinch, and when described triggering portion is stressed when sliding outside described outlet, an end of described pressure cable torsion spring breaks away from described clinch and is in free state;
The other end of described pressure cable torsion spring rides on the described movable pliers, and when described movable pliers went to closure state, at least a portion of the described other end was positioned at described passing channel.
3. high pressure split core type current transformer according to claim 1 is characterized in that:
Also be provided with a wear strip between described slide plate and described housing, described wear strip is fixed on the described housing, and described outlet is positioned on the described wear strip.
4. high pressure split core type current transformer according to claim 1 is characterized in that:
The diameter in described exit is less than the diameter of described porch.
5. according to each described high pressure split core type current transformer of claim 1 to 4, it is characterized in that:
The jaw surf zone of described fixed pliers is provided with anti-slop serrations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310110020.XA CN103219142B (en) | 2013-03-29 | 2013-03-29 | High-voltage split-core type current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310110020.XA CN103219142B (en) | 2013-03-29 | 2013-03-29 | High-voltage split-core type current transformer |
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| Publication Number | Publication Date |
|---|---|
| CN103219142A true CN103219142A (en) | 2013-07-24 |
| CN103219142B CN103219142B (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310110020.XA Active CN103219142B (en) | 2013-03-29 | 2013-03-29 | High-voltage split-core type current transformer |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866508A (en) * | 2016-04-28 | 2016-08-17 | 云南省计量测试技术研究院 | Online current testing clamp for flexible optical fiber |
| CN105869851A (en) * | 2016-05-16 | 2016-08-17 | 国家电网公司 | Current transformer device capable of being installed fast in electrified mode |
| CN106680569A (en) * | 2016-12-09 | 2017-05-17 | 国网北京市电力公司 | Current sensor |
| CN112129985A (en) * | 2020-09-09 | 2020-12-25 | 贵州电网有限责任公司 | Intelligent control device for pincer type mutual inductor |
| CN112397280A (en) * | 2020-10-28 | 2021-02-23 | 珠海银河智能电网有限公司 | Mutual inductor and measuring instrument for current mutual inductance |
| CN112951571A (en) * | 2021-01-07 | 2021-06-11 | 云南电网有限责任公司电力科学研究院 | High-voltage direct current transformer with protective cover |
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| JP2008051738A (en) * | 2006-08-28 | 2008-03-06 | Hioki Ee Corp | Clamp sensor |
| CN102270534A (en) * | 2010-06-04 | 2011-12-07 | 徐其信 | Clamp-type current transformer |
| CN102735897A (en) * | 2011-04-11 | 2012-10-17 | 施耐德电器工业公司 | Device and assembly for measuring electric current |
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2013
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2008051738A (en) * | 2006-08-28 | 2008-03-06 | Hioki Ee Corp | Clamp sensor |
| CN102270534A (en) * | 2010-06-04 | 2011-12-07 | 徐其信 | Clamp-type current transformer |
| CN102735897A (en) * | 2011-04-11 | 2012-10-17 | 施耐德电器工业公司 | Device and assembly for measuring electric current |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866508A (en) * | 2016-04-28 | 2016-08-17 | 云南省计量测试技术研究院 | Online current testing clamp for flexible optical fiber |
| CN105866508B (en) * | 2016-04-28 | 2018-09-18 | 云南省计量测试技术研究院 | The online testing current pincers of flexible optical fibre |
| CN105869851A (en) * | 2016-05-16 | 2016-08-17 | 国家电网公司 | Current transformer device capable of being installed fast in electrified mode |
| CN105869851B (en) * | 2016-05-16 | 2017-11-07 | 国家电网公司 | It is a kind of can fast live line install current transformer device |
| CN106680569A (en) * | 2016-12-09 | 2017-05-17 | 国网北京市电力公司 | Current sensor |
| CN112129985A (en) * | 2020-09-09 | 2020-12-25 | 贵州电网有限责任公司 | Intelligent control device for pincer type mutual inductor |
| CN112129985B (en) * | 2020-09-09 | 2023-12-22 | 贵州电网有限责任公司 | Intelligent control device for clamp type mutual inductor |
| CN112397280A (en) * | 2020-10-28 | 2021-02-23 | 珠海银河智能电网有限公司 | Mutual inductor and measuring instrument for current mutual inductance |
| CN112397280B (en) * | 2020-10-28 | 2021-09-07 | 珠海银河智能电网有限公司 | Mutual inductor and measuring instrument for current mutual inductance |
| CN112951571A (en) * | 2021-01-07 | 2021-06-11 | 云南电网有限责任公司电力科学研究院 | High-voltage direct current transformer with protective cover |
| CN112951571B (en) * | 2021-01-07 | 2023-11-21 | 云南电网有限责任公司电力科学研究院 | High-voltage direct current transformer with protective cover |
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| CN103219142B (en) | 2015-09-02 |
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