CN104459495B - A kind of installation method and structure of the external sensor for detecting sleeve pipe shelf depreciation - Google Patents
A kind of installation method and structure of the external sensor for detecting sleeve pipe shelf depreciation Download PDFInfo
- Publication number
- CN104459495B CN104459495B CN201410787729.8A CN201410787729A CN104459495B CN 104459495 B CN104459495 B CN 104459495B CN 201410787729 A CN201410787729 A CN 201410787729A CN 104459495 B CN104459495 B CN 104459495B
- Authority
- CN
- China
- Prior art keywords
- metal
- metal case
- sleeve pipe
- mask tape
- sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses a kind of installation method and structure of the external sensor for detecting sleeve pipe shelf depreciation.By carrying out external installation to sensor, it is set to detect the electromagnetic wave radiated at metal flange gap, to realize the measurement to shelf depreciation in sleeve pipe.Mounting structure composition is simple in the present invention, installation method is easily achieved, and effectively outer signals can be avoided to disturb, sensor based on installation method in the present invention and mounting structure can realize higher detection sensitivity, meet the testing requirements to local discharge signal, the various problems that existing built-in sensor can be avoided to bring.
Description
Technical field
The present invention relates to a kind of signal supervisory instrument installation method and mounting structure, more particularly to a kind of local discharge signal
Detection means installation method and mounting structure.
Background technology
Sleeve pipe is one of most important annex of transformer.The high and low pressure lead of inside transformer is not only guided to oil by it
Outside case, the connection with external network is realized, while also play a part of anchor leg.The fault rate of sleeve pipe accounts for whole transformers
The ratio of accident rate increases year by year, and the particularly capacitor core of sleeve pipe the accidents such as shelf depreciation once occurs and will result in blast,
Easily transformer is caused to catch fire, this is extremely dangerous.It is therefore desirable to the partial discharge phenomenon of sleeve pipe is detected.
Partial discharge of transformer on-line checking mounting means conventional at present has three kinds：1. fuel outlet valve mounting means, it will pass
Sensor gos deep into transformer oil after passing through fuel outlet valve, and this method can influence the effect of draining the oil, and especially can not directly pacify in emergency oil discharge valve
Dress, and transformer bottom oil pressure is higher, to prevent leakage of oil during installation；People 2. (hand) hole mounting means, probe, which is arranged on, to be become
On depressor people (hand) blind patch, overhaul or drain the oil processing when implement, people (hand) hole site is typically in transformer bottom and structure
The position that upper people can smoothly enter, therefore also it is beneficial to install sensor, hand hole is typically in the lower end of high current sleeve pipe or Current Mutual Inductance
Device outlet position, it is not safe enough for measurement；3. prefabrication system, transformer dispatch from the factory before body proper site windowing and it is prefabricated
The prefabrication system of probe, this mode is best but can only could be realized when ordering goods and designing.It is grounded using end shield is sleeved on
Rogowski coil can detect shelf depreciation, but the interference that this method is inevitably sealed in by earth point, using outer
The formula sensor of putting can solve this problem.It can be seen that particularity of the sleeve pipe due to its structure, built-in sensor are not easy to realize,
And various problems be present, it is necessary to using external sensor.How to realize the installation of external sensor is a difficult point.
The content of the invention
For the above state of the art, to realize the goal of the invention of above-mentioned installation external sensor, this patent provides one
The external sensor installation method and mounting structure of kind detection sleeve pipe shelf depreciation.Its main measuring principle is：Work as transformer
When partial discharge phenomenon occurs for sleeve pipe, the gap at the metal flange of sleeve pipe can give off electromagnetic wave, and the electromagnetic wave reflects set
The situation of pipe shelf depreciation, the electromagnetic wave is detected, the measurement to shelf depreciation can be realized.
In order to solve the above-mentioned technical problem, the present invention provides following technical scheme：
A kind of installation method for the external sensor for detecting sleeve pipe shelf depreciation, the installation method are included sensor
The step that is installed in a metal case, the step of being installed on the metal case at the metal flange of sleeve pipe, and by one
Step of the metal mask tape with being connected at left and right sides of the metal case and around being fixed on the metal flange of sleeve pipe, its
In, the trailing flank of the metal case is combined to realize with the metal mask tape and the metal flange is held around, and described
The trailing flank of metal case is cambered surface, is made up of insulating materials, and the cambered surface fits with the metal flange outer surface.
Preferably, the left and right sides of the metal case is respectively provided with a buckle respectively, the metal mask tape is logical
The buckle is crossed to realize and the connection at left and right sides of the metal case.
Preferably, the leading flank of the metal case is provided with a circular hole, the installation method is also included sensor
Connecting line is passed in and out by the circular hole so as to realize the step of signal transmits.
Accordingly, the invention provides a kind of mounting structure for the external sensor for detecting sleeve pipe shelf depreciation, the peace
Assembling structure includes a metal case and a metal mask tape, wherein, the metal mask tape and the left and right two of the metal case
Side, which is connected and surrounded, to be fixed on the metal flange of sleeve pipe, and the trailing flank of the metal case is combined with the metal mask tape
Realize and the metal flange is held around, and the trailing flank of the metal case is cambered surface, is made up of insulating materials, the cambered surface
Fitted with the metal flange outer surface.
Preferably, the left and right sides of the metal case is respectively provided with a buckle respectively, the buckle is described for connecting
The both ends of metal mask tape.
Preferably, the leading flank of the metal case is provided with a circular hole, the disengaging for sensor connecting line.
Mounting structure composition is simple in the present invention, and installation method is easily achieved, and effectively outer signals can be avoided to disturb,
Sensor based on installation method in the present invention and mounting structure can realize higher detection sensitivity, meet to believe shelf depreciation
Number testing requirements, the various problems that existing built-in sensor can be avoided to bring.
Brief description of the drawings
Fig. 1 is the mounting structure schematic diagram for the external sensor that sleeve pipe shelf depreciation is detected in the present invention；
Fig. 2 is the specific mounting means schematic diagram for the external sensor that sleeve pipe shelf depreciation is detected in the present invention.
Embodiment
Above-mentioned external installation method and mounting structure are further explained below in conjunction with specific embodiment.
As shown in figure 1, the mounting structure includes box body and metal mask tape, wherein, sensing element is located in box body, box body
A buckle is respectively arranged on the left side and the right side, the both ends of metal mask tape are realized by two buckles and the connection of box body both sides, institute
State the trailing flank of box body and the metal mask tape combines to realize and the metal flange is held around, in order to realize to metal method
The measurement of electromagnetic wave at blue gap, and the interference of external signal is avoided, the box body is metal case, and after the metal case
Side is made up of insulating materials, in order to further improve the accuracy of detection, set the trailing flank for can with outside metal flange
Surface fits the cambered surface of contact.When bushing shell for transformer produces partial discharge phenomenon, can be radiated at the gap of the flange of sleeve pipe
Go out electromagnetic wave, the electromagnetic wave has reacted the situation of shelf depreciation.In the mounting structure, the electromagnetic wave is through metal case
Trailing flank is transferred to sensing element, and sensing element detects to the electromagnetic wave, so as to obtain the detection to shelf depreciation, together
When, due to the presence of metal mask tape and metal case, effectively external signal can be avoided to disturb, realize accurate measurement.
Exemplified by using microstrip antenna as sensing element, microstrip antenna is placed in the metal case, 50 Ω coaxial lines are led to
Circular hole connection microstrip antenna is crossed, and the local discharge signal measured is drawn, metal case is installed on casing metal flange.Gold
There are two buckles category box body both sides, for fixing metal mask tape.Metal case is fixed in metal mask tape one end first
The buckle of side, after winding metal flange one encloses, the other end of metal mask tape is fixed on to the buckle of the opposite side of box body.Tool
Body scheme of installation is as shown in Figure 2.By verifying that the installation method is solid and reliable, and it is able to detect that local discharge signal.
Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical
Cross above preferred embodiment the present invention is described in detail, it is to be understood by those skilled in the art that can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (2)
- A kind of 1. installation method for the external sensor for detecting bushing shell for transformer shelf depreciation, it is characterised in that：The installation Step that method includes sensor being installed in a metal case, the metal case is installed at the metal flange of sleeve pipe The step of, and the metal by a metal mask tape with being connected at left and right sides of the metal case and around sleeve pipe is fixed on Step on flange, wherein, the trailing flank of the metal case is combined with the metal mask tape to be realized to the metal method Blue holds around, and the trailing flank of the metal case is cambered surface, is made up of insulating materials, the cambered surface and the metal flange appearance Face fits；The left and right sides of the metal case is respectively provided with a buckle respectively, and the metal mask tape is by described Buckle is realized and the connection at left and right sides of the metal case；The leading flank of the metal case is provided with a circular hole, institute Stating installation method also includes by the circular hole passing in and out sensor connecting line so as to realize the step of signal transmits.
- A kind of 2. mounting structure for the external sensor for detecting bushing shell for transformer shelf depreciation, it is characterised in that：The installation knot Structure includes a metal case and a metal mask tape, wherein, the metal mask tape and the left and right sides phase of the metal case Connect and surround and be fixed on the metal flange of sleeve pipe, realization is combined in the trailing flank of the metal case with the metal mask tape The metal flange is held around, and the trailing flank of the metal case is cambered surface, is made up of insulating materials, the cambered surface and institute Metal flange outer surface is stated to fit；The left and right sides of the metal case is respectively provided with a buckle respectively, and the buckle is used for Connect the both ends of the metal mask tape；The leading flank of the metal case is provided with a circular hole, for sensor connecting line Disengaging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410787729.8A CN104459495B (en) | 2014-12-17 | 2014-12-17 | A kind of installation method and structure of the external sensor for detecting sleeve pipe shelf depreciation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410787729.8A CN104459495B (en) | 2014-12-17 | 2014-12-17 | A kind of installation method and structure of the external sensor for detecting sleeve pipe shelf depreciation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104459495A CN104459495A (en) | 2015-03-25 |
| CN104459495B true CN104459495B (en) | 2018-01-16 |
Family
ID=52905857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410787729.8A Active CN104459495B (en) | 2014-12-17 | 2014-12-17 | A kind of installation method and structure of the external sensor for detecting sleeve pipe shelf depreciation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104459495B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467286A (en) * | 2015-12-21 | 2016-04-06 | 许继（厦门）智能电力设备股份有限公司 | Local discharge detection device |
| CN113281586B (en) * | 2021-04-25 | 2022-05-27 | 武汉伊莱维特电力科技有限公司 | Real-time monitoring device for electrical equipment partial discharge detection equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2697662Y (en) * | 2003-12-18 | 2005-05-04 | 西安交通大学 | Local discharge detection sensor for ultraviolet frequency band |
| CN102183711A (en) * | 2011-03-15 | 2011-09-14 | 辽宁省电力有限公司阜新供电公司 | Local discharge detection device in running state of high-voltage combined electric appliance |
| CN202256589U (en) * | 2011-10-10 | 2012-05-30 | 上海莫克电子技术有限公司 | External sensor detecting discharging signal of GIS device |
| CN202421423U (en) * | 2011-12-07 | 2012-09-05 | 宁波理工监测科技股份有限公司 | Gas insulated switchgear (GIS) partial discharge detection device for shielding insulation basin |
| CN202421424U (en) * | 2011-12-07 | 2012-09-05 | 宁波理工监测科技股份有限公司 | Partial discharge detection device |
| CN202583399U (en) * | 2012-05-14 | 2012-12-05 | 杭州西湖电子研究所 | Combined device formed by ultrahigh frequency sensor and shielding soft base of sensor |
| CN204374362U (en) * | 2014-12-17 | 2015-06-03 | 广西电网公司电力科学研究院 | A kind of external sensor mounting structure of detection thimble shelf depreciation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2945634B1 (en) * | 2009-05-13 | 2011-09-30 | Areva T & D Sa | PARTIAL DISCHARGE DETECTION DEVICE FOR DETERMINING THE EXTERNAL OR INNER ORIGIN OF A PARTIAL DISCHARGE AND ASSOCIATED METHOD. |
-
2014
- 2014-12-17 CN CN201410787729.8A patent/CN104459495B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2697662Y (en) * | 2003-12-18 | 2005-05-04 | 西安交通大学 | Local discharge detection sensor for ultraviolet frequency band |
| CN102183711A (en) * | 2011-03-15 | 2011-09-14 | 辽宁省电力有限公司阜新供电公司 | Local discharge detection device in running state of high-voltage combined electric appliance |
| CN202256589U (en) * | 2011-10-10 | 2012-05-30 | 上海莫克电子技术有限公司 | External sensor detecting discharging signal of GIS device |
| CN202421423U (en) * | 2011-12-07 | 2012-09-05 | 宁波理工监测科技股份有限公司 | Gas insulated switchgear (GIS) partial discharge detection device for shielding insulation basin |
| CN202421424U (en) * | 2011-12-07 | 2012-09-05 | 宁波理工监测科技股份有限公司 | Partial discharge detection device |
| CN202583399U (en) * | 2012-05-14 | 2012-12-05 | 杭州西湖电子研究所 | Combined device formed by ultrahigh frequency sensor and shielding soft base of sensor |
| CN204374362U (en) * | 2014-12-17 | 2015-06-03 | 广西电网公司电力科学研究院 | A kind of external sensor mounting structure of detection thimble shelf depreciation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104459495A (en) | 2015-03-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104459495B (en) | A kind of installation method and structure of the external sensor for detecting sleeve pipe shelf depreciation | |
| CN106124948A (en) | Monitoring device and method are put in a kind of built-in office | |
| CN112034230B (en) | Current sensor with spiral shielding shell | |
| CN104851581A (en) | High-precision-digital-quantity-output electronic current transformer | |
| WO2012083745A1 (en) | Electromagnetic flow meter sensor capable of detecting magnetic field and magnetic permeability | |
| CN204374362U (en) | A kind of external sensor mounting structure of detection thimble shelf depreciation | |
| CN207019820U (en) | Magnetic stress sensor and its shielding construction | |
| CN209657980U (en) | A kind of current detecting mutual inductor of anti-strong magnetic field circumstance interference | |
| CN103698559B (en) | A kind of anti-electromagnetic interference device of clamp on amperemeter | |
| CN102508137A (en) | Partial discharge detection pulse current sensor with self correcting function | |
| CN102733797A (en) | Safe pulling-out indicator | |
| CN205719128U (en) | The electromagnetic flowmeter that a kind of precision is higher | |
| CN208606821U (en) | Anti-tampering New Electromagnetic Flowmeter | |
| CN104567951B (en) | Double remaining inductive proximity sensors | |
| CN106371044A (en) | Magnetic flux leakage based case inside iron core working state monitoring method | |
| CN209069357U (en) | A kind of temperature and pressure type micro-flow meter | |
| CN111707328B (en) | Mutual coupling type ball passing detection sensor and detection method thereof | |
| CN205861134U (en) | A kind of induction flow measurement device | |
| CN202422986U (en) | Low current detection mutual inductor for suppressing power frequency electromagnetic interference | |
| CN203011890U (en) | Electromagnetic detecting device for crack defect of bolt hole in in-service aluminum alloy multilayer composite board | |
| CN105629129A (en) | Improved drying changing iron core insulation resistance technology and partial discharge on-line monitoring system | |
| CN205843763U (en) | Nested type liquid metals level sensor | |
| CN206710035U (en) | Leakage monitor for bolted flange joints | |
| CN105717545B (en) | It whether there is the device of liquid metal in a kind of monitoring pipeline | |
| CN104515936B (en) | Discharge frequency domain sensing device and oil type transformer discharge diagnosis equipment using same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |