CN216956160U

CN216956160U - Electronic voltage sensor

Info

Publication number: CN216956160U
Application number: CN202220238271.0U
Authority: CN
Inventors: 赖安定; 张金春; 黄伟震
Original assignee: Fujian Hongke Electric Power Technology Co ltd
Current assignee: Fujian Hongke Electric Power Technology Co ltd
Priority date: 2022-01-28
Filing date: 2022-01-28
Publication date: 2022-07-12
Anticipated expiration: 2032-01-28

Abstract

The utility model discloses an electronic voltage sensor which comprises a base and a voltage sensor, wherein the voltage sensor is provided with an insulating shell, the bottom of the insulating shell is symmetrically provided with at least two screw holes, and the base is provided with mounting holes at the corresponding positions of the screw holes; the insulating shell is locked on the base through the bolt matching with the mounting hole and the screw hole. The utility model can avoid relative rotation between the insulating shell and the base, ensure firm and reliable connection, simplify the fixing mode of the voltage sensor, reduce parts, realize quick assembly and disassembly, and has the advantages of simple structure, firmness, reliability, strong practicability and the like. The electronic voltage sensor provided by the utility model is of a resistance-capacitance voltage division type structure, has the advantages of small volume, low manufacturing cost, wide transmission frequency band, no ferromagnetic saturation, no resonance and the like, can simultaneously meet the measurement and protection requirements, and can be widely applied to various high-voltage switch equipment such as a ring main unit.

Description

Electronic voltage sensor

Technical Field

The utility model relates to the technical field of voltage sensors, in particular to an electronic voltage sensor.

Background

The voltage sensor is widely applied to a power system and is one of necessary devices of a power plant and a transformer substation. As shown in fig. 1, the conventional voltage sensor generally includes an insulating housing 2 'and a base 1', and a fixing nut 3 'is packaged at the bottom of the insulating housing 2' and is used for fixing with a screw 4 'penetrating through the base 1', so as to realize the connection between the insulating housing 2 'and the base 1'. However, in the fixing manner, the insulating housing 2 'and the base 1' often rotate relatively during use, so that an anchor ear (not shown) is usually required to be additionally arranged outside the insulating housing 2 'so as to be fixedly connected to the upper end face of the base 1', thereby ensuring stable connection. It can be seen that the fixing mode of the existing voltage sensor is complex, the number of parts is large, and the assembly and disassembly are very inconvenient.

Disclosure of Invention

The utility model provides an electronic voltage sensor, which mainly aims to solve the problems in the prior art.

The utility model adopts the following technical scheme:

an electronic voltage sensor includes a base and a voltage sensor having an insulating housing; the bottom of the insulating shell is symmetrically provided with at least two screw holes, and the base is provided with mounting holes at the corresponding positions of the screw holes; the insulating shell is fixedly locked on the base through a bolt matched with the mounting hole and the screw hole.

Further, the base top is equipped with 3 voltage sensor, and between two adjacent voltage sensor the screw is dislocation set each other.

Furthermore, an annular boss is arranged at the bottom of the insulating shell, and at least two embedded nuts with screw holes are embedded at the bottom of the annular boss.

Furthermore, a plurality of sheds are arranged on the outer side wall of the insulating shell, and the diameters of the sheds are equal to the diameters of the annular bosses.

Further, the device also comprises a sealing ring; an annular concave part is arranged at the bottom of the insulating shell along the peripheral edge of the bottom of the insulating shell, so that a cavity for installing the sealing ring is formed between the insulating shell and the base.

Further, the base comprises a cover body and a sealing plate; the top of the cover body is provided with the mounting hole, and the bottom of the cover body is provided with an opening; the shrouding detachably set up in the opening part of the cover body.

Furthermore, the two sides of the cover body are fixedly provided with L-shaped mounting brackets.

Still further, the cover body and the mounting bracket are integrally formed.

Furthermore, a flange is arranged at the bottom of the cover body, and the sealing plate is detachably arranged on the flange.

Furthermore, the voltage sensor also comprises a resistance-capacitance voltage-dividing type voltage sensing assembly arranged inside the insulating shell.

Compared with the prior art, the utility model has the beneficial effects that:

1. the voltage sensor is locked by arranging at least two mutually symmetrical bolts to match with the mounting holes and the screw holes, so that relative rotation between the insulating shell and the base can be avoided, firm and reliable connection is ensured, the fixing mode of the voltage sensor is simplified, parts are reduced, quick assembly and disassembly can be realized, and the voltage sensor has the advantages of simple structure, firmness, reliability, strong practicability and the like.

2. According to the utility model, the sealing ring and the cavity structure matched with the sealing ring are arranged between the insulating shell and the base, so that the sealing performance can be ensured, the phenomenon of water leakage and water seepage can be prevented, and the safety and reliability of the equipment can be improved.

3. The electronic voltage sensor provided by the utility model is of a resistance-capacitance voltage division type structure, has the advantages of small volume, low manufacturing cost, wide transmission frequency band, no ferromagnetic saturation, no resonance and the like, can simultaneously meet the measurement and protection requirements, and can be widely applied to various high-voltage switch equipment such as a ring main unit.

Drawings

Fig. 1 is a schematic structural diagram of a voltage sensor in the prior art.

Fig. 2 is a schematic structural diagram of the voltage sensor according to the present invention.

Fig. 3 is an enlarged schematic view of a portion a in fig. 2.

Fig. 4 is an exploded view of a voltage sensor according to the present invention (bolts not shown).

Fig. 5 is a second schematic diagram of the voltage sensor according to the present invention (bolts not shown).

In the figure: 1. a base; 10. a cavity; 11. a cover body; 110. mounting holes; 111. an opening; 112. flanging; 12. closing the plate; 13. mounting a bracket; 2. a voltage sensor; 20. a bolt; 21. an insulating housing; 210. a screw hole; 211. an embedded nut; 212. an annular boss; 213. an umbrella skirt; 214. an annular recess; 215. a abdicating step; 22. a resistance; 23. a first metal joint; 24. a second metal joint; 25. a high voltage lead; 26. and a voltage division module.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings. Numerous details are set forth below in order to provide a thorough understanding of the present invention, but it will be apparent to those skilled in the art that the present invention may be practiced without these details.

Referring to fig. 2, an electronic voltage sensor includes a base 1 and a voltage sensor 2 detachably disposed on the base 1, the voltage sensor 2 has an insulating housing 21, a through hole is disposed in the middle of the insulating housing 21, and a voltage sensing assembly is disposed in the through hole. The voltage sensing component of the present embodiment is preferably a resistance-capacitance voltage-dividing voltage sensing component, which specifically includes a resistor 22, a first metal joint 23 and a second metal joint 24; the upper end of the resistor 22 is connected to an external high voltage lead 25 through a first metal connector 23, and the lower end of the resistor 22 is connected to a voltage dividing module 26 disposed in the base 1 through a second metal connector 24. The resistance-capacitance voltage division type voltage sensor has the advantages of small volume, low manufacturing cost, wide transmission frequency band, no ferromagnetic saturation, no resonance and the like, can simultaneously meet the measurement and protection requirements, and can be widely used for various high-voltage switch equipment such as a ring main unit.

Referring to fig. 2 to 5, the bottom of the insulating housing 21 is symmetrically provided with at least two screw holes 210, and the base 1 is provided with a mounting hole 110 at a position corresponding to each screw hole 210; the insulating housing 21 is locked to the base 1 by bolts 20 fitted into the mounting holes 110 and the screw holes 210. According to the utility model, the voltage sensor 2 is locked by arranging at least two mutually symmetrical bolts 20 to match with the mounting holes 110 and the screw holes 210, so that relative rotation between the insulating shell 21 and the base 1 can be avoided, firm and reliable connection is ensured, the fixing mode of the voltage sensor is simplified, parts are reduced, quick assembly and disassembly can be realized, and the utility model has the advantages of simple structure, firmness, reliability, strong practicability and the like.

Referring to fig. 2 to 5, 3 voltage sensors 2 are disposed above the base 1 and are respectively used for receiving three-phase currents of a phase a, a phase B and a phase C. Screw 210 between two adjacent voltage sensor 2 is the dislocation set each other to mounting hole 110 on base 1 also is the dislocation design each other, can reduce the distance between two adjacent voltage sensor 2 from this, makes overall structure compacter reasonable. As a preferable scheme: in this embodiment, the bottom of each insulating housing 21 is provided with two screw holes 210, the base 1 is provided with two mounting holes 110 at the mounting position of each insulating housing 21, the screw holes 210 and the mounting holes 110 of the voltage sensors 2 located at two sides are arranged in the front and back direction, and the screw holes 210 and the mounting holes 110 of the voltage sensors 2 located in the middle are arranged in the left and right direction, so that the mounting stability is ensured and the mounting space is saved sufficiently.

Referring to fig. 2 and 4, the bottom of the insulating housing 21 is provided with an annular boss 212, and at least two embedded nuts 211 with screw holes 210 are embedded in the bottom of the annular boss 212. The provision of the annular boss 212 facilitates better mounting of the bolt 20, which contributes to an increase in overall structural strength.

Referring to fig. 2 to 5, the outer side wall of the insulating housing 21 is provided with a plurality of sheds 213, the arrangement of the sheds 213 aims to increase the insulating creepage distance on the surface of the insulating housing, and parameters such as the height and the diameter of the sheds 213 can be reasonably designed according to actual requirements, which are not limited herein, but it should be noted that the diameter of each shed 213 is equal to that of the annular boss 212, so as to ensure that the outer diameter of the insulating housing 21 is kept consistent, and further, the distance between two adjacent voltage sensors 2 is fully compressed, so that the whole is more compact, and the miniaturization design is facilitated.

Referring to fig. 2, 3 and 5, a sealing ring (not shown) is further included; the insulating housing 21 is provided with an annular recess 214 along the peripheral edge of the bottom thereof, so that a cavity 10 for installing a sealing ring is formed between the insulating housing 21 and the base 1, thereby ensuring sealing performance, preventing water leakage and water seepage, and improving safety and reliability of the equipment.

Referring to fig. 2, 3 and 5, the cross section of the sealing ring is L-shaped, and the annular boss 212 is provided with a relief step 215 at the peripheral edge of the annular concave portion 214, so that the cavity 10 between the insulating housing 21 and the base 1 is in an L-shaped structure matched with the sealing ring, thereby further improving the sealing performance of the device. In addition, in practical application, a sealing ring with a Z-shaped section can be adopted, and the adaptive design is carried out on the cavity.

Referring to fig. 2 to 4, the base 1 includes a cover 11 and a closing plate 12; the top of the cover body 11 is provided with a mounting hole 110, and the bottom of the cover body 11 is provided with an opening 111; the closing plate 12 is detachably disposed at the opening 111 of the cover 11. For easier installation, the bottom of the housing 11 is provided with a flange 112, and the closing plate 12 is detachably arranged at the flange 112 by screws (not shown).

Referring to fig. 2, 4 and 5, the cover 11 is fixedly provided with mounting brackets 13 at both sides thereof, and in order to ensure structural strength, the cover 11 and the mounting brackets 13 are designed to be integrally formed. When in use, the mounting bracket 13 is fixed on equipment such as a ring main unit and the like needing to be detected only through bolts, and the operation is simple and convenient.

The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.

Claims

1. An electronic voltage sensor includes a base and a voltage sensor having an insulating housing; the method is characterized in that: the bottom of the insulating shell is symmetrically provided with at least two screw holes, and the base is provided with mounting holes at the corresponding positions of the screw holes; the insulating shell is fixedly locked on the base through a bolt matched with the mounting hole and the screw hole.

2. An electronic voltage sensor according to claim 1, wherein: the base top is equipped with 3 voltage sensor, and between two adjacent voltage sensor the screw is dislocation set each other.

3. An electronic voltage sensor according to claim 1, wherein: the bottom of the insulating shell is provided with an annular boss, and the bottom of the annular boss is embedded with at least two embedded nuts with screw holes.

4. An electronic voltage sensor according to claim 3, wherein: the outer side wall of the insulating shell is provided with a plurality of sheds, and the diameters of the sheds are equal to those of the annular bosses.

5. An electronic voltage sensor according to claim 1, wherein: the sealing ring is also included; an annular concave part is arranged at the bottom of the insulating shell along the peripheral edge of the bottom of the insulating shell, so that a cavity for installing the sealing ring is formed between the insulating shell and the base.

6. An electronic voltage sensor according to claim 1, wherein: the base comprises a cover body and a sealing plate; the top of the cover body is provided with the mounting hole, and the bottom of the cover body is provided with an opening; the shrouding detachably set up in the opening part of the cover body.

7. An electronic voltage sensor according to claim 6, wherein: and L-shaped mounting brackets are fixedly arranged on two sides of the cover body.

8. An electronic voltage sensor according to claim 7, wherein: the cover body and the mounting bracket are integrally formed.

9. An electronic voltage sensor according to claim 6, wherein: the bottom of the cover body is provided with a flanging, and the sealing plate is detachably arranged on the flanging.

10. An electronic voltage sensor according to claim 1, wherein: the voltage sensor further comprises a resistance-capacitance voltage division type voltage sensing assembly arranged inside the insulating shell.