CN214503799U

CN214503799U - Omnidirectional UHF noise sensor

Info

Publication number: CN214503799U
Application number: CN202120236360.7U
Authority: CN
Inventors: 陈勇; 王永君; 熊志云; 张磊; 辛岩; 郝乾; 吴俊�
Original assignee: Landpower Wuhan Co ltd
Current assignee: Landpower Wuhan Co ltd
Priority date: 2021-01-28
Filing date: 2021-01-28
Publication date: 2021-10-26
Anticipated expiration: 2031-01-28

Abstract

The utility model discloses a belong to detection device technical field, specifically be an qxcomm technology UHF noise sensor, including pipe shape shell, N type radio frequency line, PCB antenna and PCB signal reflection board, the bottom of pipe shape shell bonds N type radio frequency line, the inside of pipe shape shell bonds the PCB antenna, the PCB antenna has main pad and vice pad, N type radio frequency line has shielding layer and sinle silk, the electrical output end electric connection of shielding layer main pad, the electrical output end electric connection of sinle silk vice pad, the lateral wall of PCB antenna bonds and has two-sided bubble celloidin, and this kind of qxcomm technology UHF noise sensor through the combination application of accessory, makes detection device improve to the ability of the qxcomm technology receipt of signal, realizes the effective receipt to the signal of on-the-spot all directions, effectual suppression external disturbance signal, and small in size, The installation operation is simple and convenient, the reliability is high, and certain commonality and suitability have.

Description

Omnidirectional UHF noise sensor

Technical Field

The utility model relates to a detection device technical field specifically is an omnidirectional UHF noise sensor.

Background

Gas-insulated metal-enclosed switchgear is an important component of electrical network equipment.

GIS is in large quantity, and uses extensively in urban power grid, and GIS compact structure to it is very sensitive to inside tiny insulation defect, consequently leads to the serious accident of insulation breakdown easily, usually, to GIS's conventional tour can't effectively know the running condition of equipment, this because GIS's totally closed, GIS's on-the-spot maintenance environmental requirement is high, dismouting work load is big, the power off time is long and the maintenance cost is expensive.

The popularization and application of the UHF partial discharge online detection technology have positive significance and good social and economic benefits for prejudging the health condition of the GIS, avoiding major equipment accidents of a power grid, ensuring the safe operation of the GIS and improving the equipment overhauling and maintaining efficiency, and in addition, the UHF partial discharge online detection technology is also widely applied to partial discharge detection/monitoring of high-voltage electrical equipment such as power transformers, power cables and the like.

The detection device used in the existing partial discharge UHF online detection technology has weak capability of omni-directional reception of signals, and cannot realize effective reception of signals in various directions on site, so that external interference signals cannot be effectively inhibited in the field actual measurement process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an omnidirectional UHF noise sensor to the detection device who uses among the current partial discharge UHF on-line measuring technique of proposing in solving above-mentioned background art is more weak to the ability of the omnidirectional reception of signal, can't realize the effective receipt to the signal of on-the-spot all directions, consequently can't effectual suppression external disturbance signal's problem at on-the-spot actual measurement in-process.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an omnidirectional UHF noise sensor, includes the tubular shell of circle, N type radio frequency line, PCB antenna and PCB signal reflection board, the bottom of the tubular shell of circle bonds N type radio frequency line, the inside of the tubular shell of circle bonds the PCB antenna, the PCB antenna has main pad and vice pad, N type radio frequency line has shielding layer and sinle silk, the electrical output end electric connection of shielding layer main pad, the electrical output end electric connection of sinle silk vice pad, the lateral wall of PCB antenna bonds and has two-sided bubble celloidin, the lateral wall of two-sided bubble celloidin bonds PCB signal reflection board.

Preferably, the minimum electrical distance between the main pad and the sub-pad is 1.5 mm.

Preferably, the thickness of the double-faced foam cotton is 3mm, and the number of the double-faced foam cotton is two.

Preferably, the top of the N-type radio frequency wire is provided with a groove, and the bottom of the circular tube-shaped shell is coated with colloid and then is buckled with the groove.

Preferably, the round tube-shaped shell is filled and sealed with black epoxy resin, and a black heat-shrinkable sleeve is sleeved on the outer wall of the round tube-shaped shell.

Compared with the prior art, the beneficial effects of the utility model are that: the omnidirectional UHF noise sensor improves the omnidirectional receiving capability of the detection device to signals through the combined application of accessories, realizes the effective receiving of the signals in all directions on site, effectively inhibits external interference signals, and has small size, simple and convenient installation and operation, high reliability, certain universality and applicability.

Drawings

FIG. 1 is a schematic view of the external structure of the present invention;

fig. 2 is a schematic view of the internal structure of the present invention.

In the figure: 100 round tube shaped outer casing, 200N type radio frequency wire, 300PCB antenna, 400PCB signal reflection board.

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 only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides an omnidirectional UHF noise sensor, which is applied by the combination of accessories, has small size, simple and convenient installation and operation, high reliability, certain universality and applicability, and a UHF noise signal sensor structure for GIS partial discharge on-line monitoring, please refer to fig. 1 and fig. 2, comprising a circular tube-shaped shell 100, an N-type radio frequency line 200, a PCB antenna 300 and a PCB signal reflection board 400;

referring to fig. 2 again, the bottom of the circular tube-shaped housing 100 is provided with an N-type rf line 200, specifically, the bottom of the circular tube-shaped housing 100 is bonded with the N-type rf line 200, the circular tube-shaped housing 100 is made of a non-metal material, two ends of the circular tube-shaped housing 100 are polished flat, N ends of the N-type rf line 200 are plated with nickel by brass, the rf line is a teflon shielding coaxial rf line with an outer diameter of 1.5mm, and the tail of the rf line is welded on the PCB antenna 300;

referring to fig. 2 again, the circular tube shaped housing 100 is connected to the PCB antenna 300, specifically, the PCB antenna 300 is bonded to the inside of the circular tube shaped housing 100, the PCB antenna 300 is processed by 0.8mm PCB board and is connected to N terminals through radio frequency lines, the back side is attached to the PCB signal reflection board 400, and the whole is placed in the circular tube shaped housing 100;

referring to fig. 2 again, the PCB antenna 300 is connected to the N-type rf line 200, specifically, the PCB antenna 300 has a main pad and an auxiliary pad, the N-type rf line 200 has a shielding layer and a core, an electrical output end of the shielding layer is electrically connected to the main pad, an electrical output end of the core is electrically connected to the auxiliary pad, a sidewall of the PCB antenna 300 is bonded with the double-sided foam adhesive, and a sidewall of the double-sided foam adhesive is bonded to the PCB signal reflection plate 400;

when the UHF sensor is used specifically, firstly, the receiving directivity and the detection frequency band range of a detection device used in the partial discharge UHF online detection technology are crucial to the anti-interference mode, the effect of the anti-interference method can be fully exerted only by adopting the detection device with excellent performance and carrying out reasonable configuration with a signal sensor, and the UHF noise signal sensor structure for GIS partial discharge online monitoring has the key technology that the UHF noise signal sensor structure comprises a round tube-shaped shell 100, an N-shaped radio frequency wire 200 bonded on the top end of the round tube-shaped shell 100, a PCB antenna 300 welded on the top end of the N-shaped radio frequency wire 200 and matched with the inside of the round tube-shaped shell 100, a PCB signal reflecting plate 400 bonded on the back side of the PCB antenna 300, the tail part of the N-shaped radio frequency wire 200 is welded on the PCB antenna 300, the PCB signal reflecting plate 400 is bonded on the back side of the PCB antenna 300 by double-sided adhesive, the round tube-shaped shell 100 is sleeved on the base of the N-shaped radio frequency wire 200, and the PCB antenna 300 is sleeved in the tube, and the PCB antenna 300 is sealed therein by being filled with epoxy resin.

Referring to fig. 2 again, in order to ensure the using effect, specifically, the minimum electrical distance between the main pad and the sub-pad is 1.5 mm.

Referring to fig. 2 again, in order to facilitate the combination and connection, specifically, the thickness of the double-sided foam adhesive is 3mm, the number of the double-sided foam adhesive is two, the top of the N-type rf line 200 is provided with a groove, and the bottom of the circular tube-shaped housing 100 is coated with the adhesive and then is fastened with the groove.

Referring to fig. 2 again, in order to facilitate sealing and packaging, specifically, the inside of the circular tube-shaped housing 100 is filled and sealed with black epoxy resin, and a black heat-shrinkable sleeve is sleeved on the outer wall of the circular tube-shaped housing 100.

While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the description of such combinations is not exhaustive in the present specification only for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. An omnidirectional UHF noise sensor, comprising: including pipe shape shell (100), N type radio frequency line (200), PCB antenna (300) and PCB signal reflecting plate (400), the bottom of pipe shape shell (100) bonds N type radio frequency line (200), the inside bonding of pipe shape shell (100) PCB antenna (300), PCB antenna (300) has main pad and vice pad, N type radio frequency line (200) have shielding layer and sinle silk, the electric property output electric connection of shielding layer main pad, the electric property output electric connection of sinle silk vice pad, the lateral wall of PCB antenna (300) bonds and has two-sided bubble celloidin, the lateral wall that two-sided bubble celloidin bonds PCB signal reflecting plate (400).

2. The omnidirectional UHF noise sensor of claim 1, wherein: the minimum electrical distance between the main pad and the sub-pad is 1.5 mm.

3. The omnidirectional UHF noise sensor of claim 2, wherein: the thickness of the double-sided foam cotton rubber is 3mm, and the number of the double-sided foam cotton rubber is two.

4. The omnidirectional UHF noise sensor of claim 3, wherein: the top of the N-type radio frequency wire (200) is provided with a groove, and the bottom of the circular tube-shaped shell (100) is coated with colloid and then is buckled with the groove.

5. The omnidirectional UHF noise sensor of claim 4, wherein: the round tube-shaped shell (100) is filled and sealed with black epoxy resin, and the outer wall of the round tube-shaped shell (100) is sleeved with a black heat-shrinkable sleeve.