CN209858687U - Comprehensive signal acquisition sensor applied to cable partial discharge detection - Google Patents
Comprehensive signal acquisition sensor applied to cable partial discharge detection Download PDFInfo
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- CN209858687U CN209858687U CN201920371729.8U CN201920371729U CN209858687U CN 209858687 U CN209858687 U CN 209858687U CN 201920371729 U CN201920371729 U CN 201920371729U CN 209858687 U CN209858687 U CN 209858687U
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- partial discharge
- cable
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Abstract
The utility model relates to a comprehensive signal acquisition sensor applied to cable partial discharge detection, which comprises a high-frequency current detection module (1), an ultrahigh frequency detection module (2), an ultrasonic detection module (3) and a signal output integration module (4); the high-frequency current detection module (1), the ultrahigh frequency detection module (2) and the ultrasonic detection module (3) are sequentially arranged from bottom to top, and the output integration module (4) is respectively connected with the high-frequency current detection module (1), the ultrahigh frequency detection module (2) and the ultrasonic detection module (3). Compared with the prior art, the utility model has the advantages of simple structure, convenient operation have reduced witnessed inspections' work load etc. effectively.
Description
Technical Field
The utility model belongs to the technical field of the power cable partial discharge detection technique and specifically relates to a be applied to cable partial discharge and put comprehensive signal acquisition sensor who detects.
Background
With the advent of a large number of industrial cities and the continued expansion of cities, the demand for electric power is increasing. While the power grid is continuously increased, the power cable is used as a main transmission tool of electric energy, and plays a very important role in the heavy tide of the construction of the power grid.
The cable partial discharge detection device can effectively prevent accidents from happening by detecting the partial discharge state of the cable and accessories and ensure the safe and reliable operation of a cable line.
Common detection methods include a high-frequency current detection method, an ultrahigh frequency detection method, an ultrasonic detection method and the like, and each detection method needs a sensor to be matched with the detection method. For the joint detection of various modes, the sensors are too many, the wiring is complex, the workload is increased, and the field operation is inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a be applied to cable office and put comprehensive signal acquisition sensor who detects in order to overcome the defect that above-mentioned prior art exists.
The purpose of the utility model can be realized through the following technical scheme:
a comprehensive signal acquisition sensor applied to cable partial discharge detection comprises a high-frequency current detection module, an ultrahigh frequency detection module, an ultrasonic detection module and a signal output integration module; the high-frequency current detection module, the ultrahigh frequency detection module and the ultrasonic detection module are sequentially arranged from bottom to top, and the output integration module is respectively connected with the high-frequency current detection module, the ultrahigh frequency detection module and the ultrasonic detection module.
Preferably, the high-frequency current detection module includes an electromagnetic coupling core, a coil and a housing, and the electromagnetic coupling core and the coil are embedded in the housing.
Preferably, one side of the outer shell is provided with a hinge for realizing rotary connection, and the opposite side of the outer shell is provided with a lock catch for realizing fastening and locking.
Preferably, the housing comprises two separate metallic shielding shells, each of which is fitted with two spring blades.
Preferably, four mounting positions of the spring piece are distributed on the inner wall at 90 degrees.
Preferably, the ultrahigh frequency detection module comprises a dielectric plate, an antenna and a first metal shell, wherein a threaded hole for fixing the ultrasonic detection module is formed in the top end of the first metal shell, a hole for passing through the signal acquisition cable and the shielding wire is formed in the lower portion of the first metal shell, and the edge of the lower portion of the first metal shell is welded on a shell of the high-frequency current detection module.
Preferably, the ultrasonic detection module comprises a piezoelectric wafer probe and a second metal shell, and the tail end of the piezoelectric wafer probe is provided with a thread corresponding to the threaded hole.
Preferably, the signal output integration module is provided with a plug connector for integrating a signal acquisition cable and a shielding wire of the high-frequency current detection module, the ultrahigh-frequency detection module and the ultrasonic detection module, and the plug connector is connected with the detection equipment through an output cable.
Compared with the prior art, the utility model discloses an integrated structure not only can use high frequency current detection method, hyperfrequency detection method and ultrasonic detection method to carry out the office to the cable and put the detection simultaneously, has reduced sensor quantity, and is integrated in same plug connector with signal acquisition cable and shielded wire moreover, and the plug connector only uses an output cable to link to each other with check out test set, has reduced the wiring. The sensor can be mounted by opening the lock catch, sleeving the cable and closing the lock catch, and the operation is simple. The sensor can be clamped on the cable through the design of the spring pieces, and the stability of the sensor is guaranteed. Therefore, the utility model has the advantages of simple structure and convenient operation, and effectively reduces the workload of field detection.
Drawings
Fig. 1 is the utility model discloses synthesize signal acquisition sensor's main view structure sketch map.
Fig. 2 is the schematic view of the bottom view structure of the integrated signal acquisition sensor of the present invention.
Fig. 3 is a schematic view of the signal output integrated module according to the present invention.
Fig. 4 is a left side view structural diagram of the signal output integrated module of the present invention.
Fig. 5 is a schematic diagram of the right-view structure of the signal output integrated module of the present invention.
Fig. 6 is the installation schematic diagram of the integrated signal acquisition sensor of the present invention.
Detailed Description
The technical solutions in the embodiments of 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 some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.
As shown in fig. 1 and fig. 2, in the present embodiment, the integrated signal acquisition sensor for detecting the partial discharge of the cable includes a high-frequency current detection module 1, an ultrahigh-frequency detection module 2, an ultrasonic detection module 3, and a signal output integration module 4.
The high-frequency current detection module 1 is located below the sensor, and includes an electromagnetic coupling magnetic core, a coil and a housing, and is used for inducing an electromagnetic signal generated by partial discharge. The shell part consists of two independent metal shielding shells, one side of each metal shielding shell is fixed by a hinge 5 to realize a rotary connection mode, and the opposite side of each metal shielding shell is designed by a lock catch 6 to realize fastening and locking; the shell carrying the ultrahigh frequency detection module adopts an open pore design and is used for collecting a cable through a signal above the shell; two spring pieces 7 are respectively arranged on the inner wall of the metal shielding shell, four installation positions of the spring pieces 7 are distributed on the inner wall at 90 degrees, and the sensor is tightly sleeved on the cable by utilizing the elasticity of the spring pieces 7, so that the stability of the sensor during detection is ensured. The spring pieces 7 of different models can be selected according to the outer diameters of cables of different models, so that the use flexibility of the sensor is improved.
The ultrahigh frequency detection module 2 is located above the high frequency current detection module 1, comprises a dielectric plate, an antenna and a first metal shell, and can detect high frequency electromagnetic pulses radiated to the outside by cable partial discharge. A threaded hole is drilled at the top end of the shell and used for fixing the ultrasonic detection module 3 above the shell; an opening is formed in the lower portion of the shell and used for enabling the signal acquisition cable and the shielding wire to penetrate through; the lower edge of the shell of the ultrahigh frequency detection module 2 is welded on the shell of the high frequency current detection module 1.
The ultrasonic detection module 3 is located above the ultrahigh frequency sensor module 2, comprises a piezoelectric wafer probe and a second metal shell, and converts vibration signals into electric quantity to be output. The tail end of the probe is in threaded design and is in threaded connection with the ultrahigh frequency detection module 2.
Fig. 3-5 are schematic structural diagrams of the signal output integration module according to the present invention.
As shown in fig. 3-5, the signal output integration module 4 integrates the signal acquisition cables and the shielding wires of the high-frequency current detection module 1, the ultrahigh-frequency detection module 2 and the ultrasonic detection module 3 into the same connector, and the connector is connected with the detection device by using only one output cable, so as to achieve the purpose of reducing wiring and facilitate installation and use. The high-frequency current detection module 1, the ultrahigh-frequency detection module 2 and the ultrasonic detection module 3 are respectively provided with a signal transmission and acquisition cable and a shielding wire.
Fig. 6 is an installation schematic diagram of the integrated signal acquisition sensor of the present invention.
As shown in figure 6, the utility model discloses need to open sensor lock catch 6 during the use, overlap the sensor on cable or earth connection, 6 messenger's sensors of closed hasp are fixed. One end of the signal output cable is connected with the sensor plug connector, and the other end of the signal output cable is connected with the cable partial discharge detection device, so that detection operation can be performed. Therefore, the utility model has the advantages of simple structure and convenient operation, and effectively reduces the workload of field detection.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A comprehensive signal acquisition sensor applied to cable partial discharge detection is characterized by comprising a high-frequency current detection module (1), an ultrahigh frequency detection module (2), an ultrasonic detection module (3) and a signal output integration module (4); the high-frequency current detection module (1), the ultrahigh frequency detection module (2) and the ultrasonic detection module (3) are sequentially arranged from bottom to top, and the output integration module (4) is respectively connected with the high-frequency current detection module (1), the ultrahigh frequency detection module (2) and the ultrasonic detection module (3).
2. The integrated signal acquisition sensor applied to the cable partial discharge detection according to claim 1, wherein the high-frequency current detection module (1) comprises an electromagnetically-coupled magnetic core, a coil and a housing, and the electromagnetically-coupled magnetic core and the coil are arranged in the housing.
3. An integrated signal acquisition sensor applied to cable partial discharge detection according to claim 2, characterized in that one side of the housing is provided with a hinge (5) for realizing rotation connection, and the opposite side is provided with a lock catch (6) for realizing fastening locking.
4. An integrated signal acquisition sensor for partial discharge detection of cables according to claim 2, characterized in that said housing comprises two separate metallic shielding shells, each of which is provided with two leaf springs (7).
5. The integrated signal acquisition sensor applied to the cable partial discharge detection as recited in claim 4, wherein four mounting positions of the spring plate (7) are distributed on the inner wall at 90 degrees.
6. The integrated signal acquisition sensor applied to the cable partial discharge detection as claimed in claim 1, wherein the ultrahigh frequency detection module (2) comprises a dielectric plate, an antenna and a first metal shell, a threaded hole for fixing the ultrasonic detection module (3) is formed at the top end of the first metal shell, an opening for passing through the signal acquisition cable and the shielding wire is formed below the first metal shell, and the lower edge of the first metal shell is welded on the shell of the high frequency current detection module (1).
7. The integrated signal acquisition sensor applied to the cable partial discharge detection according to claim 6, wherein the ultrasonic detection module (3) comprises a piezoelectric wafer probe and a second metal shell, and the tail end of the piezoelectric wafer probe is provided with a thread corresponding to the threaded hole.
8. The integrated signal acquisition sensor applied to the cable partial discharge detection as claimed in claim 1, wherein the signal output integration module (4) is provided with a connector for integrating the signal acquisition cable and the shielding wire of the high frequency current detection module (1), the ultrahigh frequency detection module (2) and the ultrasonic detection module (3), and the connector is connected with the detection device through an output cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920371729.8U CN209858687U (en) | 2019-03-22 | 2019-03-22 | Comprehensive signal acquisition sensor applied to cable partial discharge detection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920371729.8U CN209858687U (en) | 2019-03-22 | 2019-03-22 | Comprehensive signal acquisition sensor applied to cable partial discharge detection |
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| CN209858687U true CN209858687U (en) | 2019-12-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111983268A (en) * | 2020-09-27 | 2020-11-24 | 华润电力投资有限公司中西分公司 | High-voltage power distribution cabinet and interface device thereof |
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2019
- 2019-03-22 CN CN201920371729.8U patent/CN209858687U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111983268A (en) * | 2020-09-27 | 2020-11-24 | 华润电力投资有限公司中西分公司 | High-voltage power distribution cabinet and interface device thereof |
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