CN202486165U - Sensor and cable connecting device - Google Patents
Sensor and cable connecting device Download PDFInfo
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- CN202486165U CN202486165U CN2012201107572U CN201220110757U CN202486165U CN 202486165 U CN202486165 U CN 202486165U CN 2012201107572 U CN2012201107572 U CN 2012201107572U CN 201220110757 U CN201220110757 U CN 201220110757U CN 202486165 U CN202486165 U CN 202486165U
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- cable
- coupling electrode
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Abstract
The utility model provides a sensor and a cable connecting device. The sensor comprises a sensor housing, an insulating separating layer and a coupling electrode which are sequentially overlapped, wherein the sensor housing, the coupling electrode and the insulating separating layer are all cylindrical; the insulating separating layer is connected with the sensor housing and the coupling electrode respectively; the edge of the insulating separating layer is beyond or overlapped with the edge of the coupling electrode in the direction vertical to the overlapping direction; moreover, the edge of the insulating separating layer is overlapped with or smaller than the edge of the sensor housing. With the adoption of the sensor in this utility model, the interference of the outside to the coupling electrode can be effectively prevented, therefore, the accuracy of the signals of the coupling electrode is ensured.
Description
Technical field
The utility model relates to field of measuring technique, in particular to a kind of sensor and cable connecting arrangement.
Background technology
In the prior art, mainly contain dual mode to the Partial Discharge Detection of cable line, first kind is to be the inductive coupling method of representative with the Luo-coil, second kind of capacitive couplings that is based on the capacitance partial pressure principle.Fig. 1 shows capacitive coupled sensors scheme of installation of the prior art; As can beappreciated from fig. 1; Capacitive couplings of the prior art is employed in and divests part outer semiconducting layer 1a and metal screen layer 1b on the both sides cable 1 near cable splice; Tinsel 2 is attached to outer semiconducting layer 1a goes up as electrode, signal is drawn from electrode.
It is simple that this has a measurement mechanism with capacitive couplings; The effective advantage of detection streamer joint internal discharge, but when measurement mechanism is installed, need destroy the structure of cable itself divests the outer semiconducting layer and the protective metal shell part of cable; Possibly bring out and aggravate shelf depreciation on the contrary; Reduced the radially waterproof action of outer semiconducting layer and protective metal shell simultaneously, the possibility height that makes cable metal or make moist has increased the possibility that causes cable accident to occur.
The utility model content
The utility model aims to provide a kind of sensor and cable connecting arrangement, is subject to the problem of external interference with sensor measurement in the solution prior art.
To achieve these goals, an aspect according to the utility model provides a kind of sensor; Comprise: stacked successively sensor outer housing, dielectric isolation layer and coupling electrode; It is cylindric that sensor outer housing, coupling electrode and dielectric isolation layer all are, and dielectric isolation layer is connected respectively with coupling electrode with sensor outer housing, wherein; On direction perpendicular to stacked direction; The edge of dielectric isolation layer exceeds or coincides with the edge of coupling electrode, and, the coincident of dielectric isolation layer in or less than the edge of sensor outer housing.
Further, all have radially to projecting inward collar flange on the sensor outer housing two ends end face vertically, to form annular recess, dielectric isolation layer is arranged in the annular recess.
Further; Sensor outer housing comprises interconnective first shell body and second shell body; Wherein, The junction of first shell body and second shell body is provided with recess, and the junction of second shell body and first shell body is provided with the lug boss suitable with recess, and the lug boss of second shell body links to each other with the recess of first shell body.
Further, sensor outer housing is provided with the terminal accommodation section, is provided with signal extraction terminal that links to each other with coupling electrode and the ground terminal that links to each other with sensor outer housing in the terminal accommodation section.
Further, the material of sensor outer housing is an aluminium, and the material of coupling electrode is a copper material, and dielectric isolation layer is a rubber layer.
According to the utility model on the other hand, a kind of cable connecting arrangement is provided, has comprised: cable splice; Be arranged on the junction of two sections cables, comprise: joint shell, splice insulation part and connection protective cap, the splice insulation part is arranged on the inside of joint shell; Joint shell is provided with two cable accessing ports that are oppositely arranged, and connection protective cap is arranged on cable accessing port place, sensor; Be arranged between connection protective cap and the splice insulation part, be positioned at the outside of cable, sensor is above-mentioned sensor.
Further, be connected with first end of signal wire on the coupling electrode of sensor, second end of signal wire extends cable splice.
Further, the sensor outer housing of sensor links to each other with connection protective cap through ground terminal.
Further, the sensor outer housing of sensor is connected to the metal screen layer of cable, and coupling electrode is connected on the semi-conductive layer of cable.
In the technical scheme of the utility model, sensor comprises stacked successively sensor outer housing, dielectric isolation layer and coupling electrode, and it is cylindric that sensor outer housing, coupling electrode and dielectric isolation layer all are; Dielectric isolation layer is connected respectively with coupling electrode with sensor outer housing; Wherein, on the direction perpendicular to stacked direction, the edge of dielectric isolation layer exceeds or coincides with the edge of coupling electrode; And, the coincident of dielectric isolation layer in or less than the edge of sensor outer housing.The sensor of the utility model; Arranged outside at coupling electrode has sensor outer housing; And between coupling electrode and sensor outer housing, dielectric isolation layer being set, the setting of shell and separation layer can effectively prevent the interference of outer bound pair coupling electrode, guarantees the accuracy of coupling electrode signal.
Description of drawings
The Figure of description that constitutes the application's a part is used to provide the further understanding to the utility model, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 shows the connection synoptic diagram of capacitive couplings in the prior art;
Fig. 2 shows the synoptic diagram according to the structure of the embodiment of the sensor of the utility model;
Fig. 3 shows the connection synoptic diagram according to the embodiment of the cable connecting arrangement of the utility model; And
Fig. 4 shows the equivalent circuit diagram of the cable connecting arrangement of Fig. 3.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the utility model.
Fig. 2 shows the synoptic diagram according to the structure of the embodiment of the sensor of the utility model; As can be seen from Figure 2, the sensor of present embodiment comprises stacked successively sensor outer housing 10, dielectric isolation layer 20 and coupling electrode 30, and sensor outer housing 10, coupling electrode 30 and dielectric isolation layer 20 all are cylindric; Dielectric isolation layer 20 is connected respectively with coupling electrode 30 with sensor outer housing 10; Wherein, on the direction perpendicular to stacked direction, the edge of dielectric isolation layer 20 exceeds or coincides with the edge of coupling electrode 30; And, the coincident of dielectric isolation layer 20 in or less than the edge of sensor outer housing 10.The sensor of the utility model; Arranged outside at coupling electrode 30 has sensor outer housing 10; And between coupling electrode 30 and sensor outer housing 10, dielectric isolation layer 20 is set; The setting of shell 10 and separation layer 20 has prevented the interference of outer bound pair coupling electrode 30, guarantees the accuracy of coupling electrode 30 signals.
In the present embodiment, all have on the sensor outer housing 10 two ends end face vertically radially to projecting inward ring dress flange 131, this ring dress flange 131 forms annular recess with sensor outer housing 10, accommodates dielectric isolation layer 20 in the annular recess.In a kind of preferred embodiment; Sensor outer housing 10 comprises interconnected first shell body 13 and second shell body 12; Wherein, the junction of first shell body 13 and second shell body 12 is provided with recess, and the junction of second shell body 12 and first shell body 13 is provided with lug boss; The lug boss of said second shell body 12 links to each other through web member with the recess of first shell body 13, makes first shell body 13 and second shell body 12 form sensor outer housing 10.Certainly, the sensor outer housing in the present embodiment 10 also can be connected to form by a plurality of minutes shells.
Also be provided with terminal accommodation section 14 on the sensor in the present embodiment; Be provided with signal extraction terminal 141 that links to each other with coupling electrode 30 and the ground terminal 142 that links to each other with sensor outer housing 10 in this terminal accommodation section; Preferably, terminal accommodation section 14 can be the one design with ground terminal 142.The material of the sensor outer housing 10 in the present embodiment can be aluminium, and the material of coupling electrode 30 is a copper material, and the material of dielectric isolation layer 20 is a rubber.
The utility model also provides a kind of cable connecting arrangement; As shown in Figure 3; Embodiment according to the cable connecting arrangement of the utility model comprises cable splice and sensor; Wherein, cable splice is arranged on the junction of two end cables, and cable splice comprises joint shell 50, splice insulation part 60 and connection protective cap 40.Joint shell 50 is provided with two cable accessing ports that are oppositely arranged, and connection protective cap 40 is arranged on the cable accessing port place, and splice insulation part 60 is arranged on joint shell 50 inside, and two end cables connect in splice insulation part 60.Sensor in the present embodiment is arranged between connection protective cap 40 and the splice insulation part 60, is positioned at the outside of cable, and in the present embodiment, connection protective cap 40 is a protective metal shell, and sensor is above-mentioned sensor.The cable connecting arrangement of present embodiment utilizes the cable jacket shield electromagnetic interference through sensor being arranged on the inside of cable splice, and the ability of the anti-external disturbance of sensor is provided.
In this enforcement, preferably, first end of the signal wire of sensor is connected on the signal extraction terminal 141, and second end extends connection protective cap 40 and links to each other with signal handling equipment.First end of ground terminal 142 links to each other with sensor outer housing 10; Second end links to each other with connection protective cap 40; Make between sensor outer housing 10 and connection protective cap 40 places to keep zero potential, and sensor outer housing 10 is connected on the metal screen layer of cable, coupling electrode 30 is connected on the semi-conductive layer of cable.
Form circuit diagram as shown in Figure 4 in the present embodiment between sensor, cable splice and the cable; R1, R2 are the resistance of cable among the figure; C1 is the electric capacity between coupling electrode 30 and the cable core conductor; C2 is the electric capacity between coupling electrode 30 and the cable metal screen layer, and R3 is the resistance between coupling electrode 30 and the cable metal layer, and R4 is the input impedance of Partial Discharge Detection unit.As 4 circuit in, under the power frequency current potential, because the impedance of outer semiconducting layer is much smaller than the impedance of insulation course, therefore, outer semiconducting layer can be considered the power frequency earth potential, so capacitive coupled sensors does not influence the effect that cable insulation bears power frequency high voltage.Under high frequency and ultrahigh-frequency signal; Outer semiconducting layer impedance and insulation course impedance are comparable; And metal screen layer is an earth potential, and high frequency office discharge signal can be drawn from semi-conductive layer and measured, thereby the sensor in the present embodiment can be measured high frequency office discharge signal.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (9)
1. a sensor is characterized in that, comprising:
Stacked successively sensor outer housing (10), dielectric isolation layer (20) and coupling electrode (30); Said sensor outer housing (10), coupling electrode (30) and dielectric isolation layer (20) all are cylindric; Said dielectric isolation layer (20) is connected respectively with coupling electrode (30) with sensor outer housing (10); Wherein, on the direction perpendicular to stacked direction, the edge of said dielectric isolation layer (20) exceeds or coincides with the edge of said coupling electrode (30); And, the coincident of said dielectric isolation layer (20) in or less than the edge of said sensor outer housing (10).
2. sensor according to claim 1; It is characterized in that; All have on said sensor outer housing (10) the two ends end face vertically radially to projecting inward collar flange (131), to form annular recess, said dielectric isolation layer (20) is arranged in the said annular recess.
3. sensor according to claim 1; It is characterized in that; Said sensor outer housing (10) comprises interconnective first shell body (13) and second shell body (12), and wherein, said first shell body (13) is provided with recess with the junction of second shell body (12); Said second shell body (12) is provided with the suitable lug boss with the female portion with the junction of first shell body (13), and the lug boss of said second shell body (12) links to each other with the recess of said first shell body (13).
4. sensor according to claim 3; It is characterized in that; Said sensor outer housing (10) is provided with terminal accommodation section (14), is provided with signal extraction terminal (141) that links to each other with said coupling electrode (30) and the ground terminal (142) that links to each other with said sensor outer housing (10) in the said terminal accommodation section (14).
5. sensor according to claim 1 is characterized in that, the material of said sensor outer housing (10) is an aluminium, and the material of said coupling electrode (30) is a copper material, and said dielectric isolation layer (20) is a rubber layer.
6. a cable connecting arrangement is characterized in that, comprising:
Cable splice; Be arranged on the junction of two sections cables, comprise: joint shell (50), splice insulation part (60) and connection protective cap (40), said splice insulation part (60) is arranged on the inside of joint shell (50); Said joint shell (50) is provided with two cable accessing ports that are oppositely arranged; Said connection protective cap (40) is arranged on said cable accessing port place, and sensor is arranged between said connection protective cap (40) and the said splice insulation part (60); Be positioned at the outside of said cable, said sensor is each described sensor in the claim 1 to 5.
7. cable connecting arrangement according to claim 6 is characterized in that, is connected with first end of signal wire on the coupling electrode of said sensor (30), and second end of said signal wire extends said cable splice.
8. cable connecting arrangement according to claim 6 is characterized in that, the sensor outer housing of said sensor (10) links to each other with said connection protective cap (40) through ground terminal (142).
9. cable connecting arrangement according to claim 6 is characterized in that, the sensor outer housing of said sensor (10) is connected to the metal screen layer of said cable, and said coupling electrode (30) is connected on the semi-conductive layer of said cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201107572U CN202486165U (en) | 2012-03-22 | 2012-03-22 | Sensor and cable connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201107572U CN202486165U (en) | 2012-03-22 | 2012-03-22 | Sensor and cable connecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202486165U true CN202486165U (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201107572U Expired - Lifetime CN202486165U (en) | 2012-03-22 | 2012-03-22 | Sensor and cable connecting device |
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| CN (1) | CN202486165U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319430A (en) * | 2015-10-28 | 2016-02-10 | 国家电网公司 | Three-axis current sensor |
| CN107402343A (en) * | 2017-08-10 | 2017-11-28 | 重庆泰山电缆有限公司 | A kind of capacitive high voltage cable connector shelf depreciation built-in sensors structure |
| CN108919076A (en) * | 2018-08-06 | 2018-11-30 | 广东电网有限责任公司 | A kind of bipolar implanted cable connector partial discharge sensor |
| CN112462124A (en) * | 2020-12-07 | 2021-03-09 | 广西电网有限责任公司电力科学研究院 | Coupling mutual inductor |
| TWI737309B (en) * | 2020-05-25 | 2021-08-21 | 國立臺灣科技大學 | On-line measuring system for partial discharges signals of cable joints |
-
2012
- 2012-03-22 CN CN2012201107572U patent/CN202486165U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319430A (en) * | 2015-10-28 | 2016-02-10 | 国家电网公司 | Three-axis current sensor |
| CN107402343A (en) * | 2017-08-10 | 2017-11-28 | 重庆泰山电缆有限公司 | A kind of capacitive high voltage cable connector shelf depreciation built-in sensors structure |
| WO2019029638A1 (en) * | 2017-08-10 | 2019-02-14 | 重庆泰山电缆有限公司 | Partial discharge built-in sensor structure of capacitance high-voltage cable joint |
| CN107402343B (en) * | 2017-08-10 | 2020-07-28 | 中国电力科学研究院有限公司 | Capacitance type high-voltage cable joint partial discharge built-in sensor structure |
| CN108919076A (en) * | 2018-08-06 | 2018-11-30 | 广东电网有限责任公司 | A kind of bipolar implanted cable connector partial discharge sensor |
| CN108919076B (en) * | 2018-08-06 | 2024-01-23 | 广东电网有限责任公司 | Bipolar implantable cable joint partial discharge sensor |
| TWI737309B (en) * | 2020-05-25 | 2021-08-21 | 國立臺灣科技大學 | On-line measuring system for partial discharges signals of cable joints |
| CN112462124A (en) * | 2020-12-07 | 2021-03-09 | 广西电网有限责任公司电力科学研究院 | Coupling mutual inductor |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |