CN206208966U - City rail integrated form direct current current divider - Google Patents
City rail integrated form direct current current divider Download PDFInfo
- Publication number
- CN206208966U CN206208966U CN201620735474.5U CN201620735474U CN206208966U CN 206208966 U CN206208966 U CN 206208966U CN 201620735474 U CN201620735474 U CN 201620735474U CN 206208966 U CN206208966 U CN 206208966U
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- China
- Prior art keywords
- instrument
- pedestal
- analog
- integrated form
- pedestals
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- Expired - Fee Related
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Abstract
A kind of city rail integrated form direct current current divider, including two pieces of pedestals, the shunt resistance and instrument warehouse that are arranged between two pedestals, the end face outside of the pedestal are provided with the connecting elements of the tested circuit connection of connection；Measuring circuit plate is installed in the instrument bin body, the measuring circuit plate is provided with the analog-digital converter, electrical to optical converter and the fiber optic cable interface that are sequentially connected with and the battery powered for analog-digital converter, electrical to optical converter, the input of the analog-digital converter is electrically connected with the pedestal, and the output end of the fiber optic cable interface connects externally measured terminal by optical cable.The utility model reasonable in design, integrated level is high, it is safe and reliable, easy for installation and maintenance is simply, it is suitable in Feeding System of Urban Rail Transit the accurate measurement to HVDC high current, can accomplish that measured signal is completely isolated with measuring instrument instrument, it is ensured that electric substation's operational management and the personal safety of inspection operation personnel, prevent equipment and personal safety accident.
Description
Technical field
The utility model belongs to technical field of electric power, and in particular to one kind can be used in city rail DC power-supply system
Integrated form direct current current divider.
Background technology
Conventional city rail electric power system high direct voltage side current divider mostly carries out security isolation using ultrared method,
Or using the method for Hall element air insulated.Although safe and reliable, it is necessary to larger volume and sky using infrared ray isolation
Between, the infrared conversion equipment and shading box of the current divider installation difficulty in switch cubicle are unfavorable for the preferred arrangement of direct-current switch cabinet
And structure design, and low pressure measurement loop is easily subject to electromagnetic interference, influences the order of accuarcy of measurement.Using Hall element air
Although partition method can accomplish completely isolated, Hall element is larger by temperature drift and electromagnetic interference influence, causes measurement
Larger error.
The content of the invention
Technical purpose of the invention is directed to the problem of prior art presence, there is provided one kind makes HVDC Equipment and low pressure
The city rail of side secondary device security isolation integrated form direct current current divider.
The utility model provide technical scheme be：
A kind of city rail integrated form direct current current divider, it is characterised in that including two pieces of pedestals being oppositely arranged, set
Some shunt resistances and instrument warehouse between two pedestals, the pedestal are the conductor of electricity, and the instrument warehouse is insulator,
The two ends of the shunt resistance are separately fixed on the inner side end of two pedestals, and the end face outside of two pedestals is provided with connection by the survey time
The connecting elements of road wiring；Measuring circuit plate is installed in the instrument bin body, is provided with the measuring circuit plate and sequentially connected
The analog-digital converter, electrical to optical converter and the fiber optic cable interface that connect and the battery powered for analog-digital converter, electrical to optical converter, it is described
The input of analog-digital converter is electrically connected with the pedestal, and the output end of the fiber optic cable interface connects externally measured end by optical cable
End.
On the basis of such scheme, further improve or preferred scheme also includes：
Instrument warehouse both sides bulkhead is separately fixed on the inner side end of two pedestals by screw, the head card of the screw
The portion in instrument bin body, in screw afterbody insertion pedestal, screw is made up of conductive material, is connected with digital analog converter input
Binding post is connected with screw head, digital analog converter is constituted with pedestal and electrically connects.
The pedestal is arranged on the left and right sides of instrument warehouse, before the measuring circuit plate is then fixed on instrument warehouse/
On rear side bulkhead.
The shunt resistance is cylindrical, copper manganese alloy resistance.
The measuring circuit plate is provided with power supply indicator or malfunction indicator lamp.
The mounting bracket of connecting elements bag one and a movable bracket, pedestal end face outside are provided with chute, the activity
Bracket is assemblied in the chute, can be slided closer or far from mounting bracket along chute track；Tested circuit connection is sandwiched in institute
State between mounting bracket and movable bracket, and locked mounting bracket and movable bracket by holder or screw-nut.
Beneficial effect：
The utility model integrated form direct current diversion structure is reasonable in design, and integrated level is high, small volume, safe and reliable, installs
It is convenient and safeguard simple, it is suitable in Feeding System of Urban Rail Transit the accurate measurement to HVDC high current, can do
It is completely isolated with measuring instrument instrument to measured signal, it is ensured that the person peace of electric substation's operational management and inspection operation personnel
Entirely, equipment and personal safety accident are prevented.
Brief description of the drawings
Fig. 1 figures are the Facad structure sectional views of the embodiment of the utility model one；
Fig. 2 is the side view in the present embodiment A directions in Fig. 1；
Fig. 3 is the top view in the present embodiment B directions in Fig. 1；
Fig. 4 is the use state of the present embodiment with reference to figure.
Specific embodiment
In order to further elucidate the technical solution of the utility model and technical purpose, below in conjunction with the accompanying drawings with specific embodiment
The utility model is further described.
A kind of integrated form direct current current divider of city rail as shown in Figure 1 to Figure 3, including two pieces of flat boards being oppositely arranged
Shape pedestal 1, the end face outside of pedestal 1 is provided with the connecting elements of the tested loop hard bus of connection, the pedestal 1 and connecting elements
It is made of high conductivity metal.Connected by some cylindric shunt resistances 20 between two pedestals 1, the shunt resistance 20
End be welded on the inner side end of pedestal 1, it is preferred to use manganin material, have preferable stability and accuracy.This
6 shunt resistances are used in embodiment, by 20 points of 6 shunt resistances for two rows are arranged between two pedestals 1, such as Fig. 2 institutes
Show, the space mounting arranged up and down between shunt resistance has instrument warehouse 6.
The mounting bracket 9 of the connecting elements bag one and a movable bracket 10, mounting bracket 9 are fixed on pedestal 1 by bolt 8
On, the end face outside of pedestal 1 is provided with chute 11, and the movable bracket 10 is assemblied in the chute 11, can be along the track of chute 11
Slide, closer or far from mounting bracket 9, to adapt to the tested circuit connection of different size thickness.The mounting bracket 9 and activity
Bracket 10 is provided with bolt hole 19 in corresponding position, and tested circuit connection 101 is sandwiched in the mounting bracket 9 and movable bracket 10
Between after, mounting bracket 9 can be locked with movable bracket 10 by screw 100 and nut, ensure bracket and the firm connection of wiring.
The instrument warehouse 6 is made up of high-strength insulating material, the inner hollow of instrument warehouse 6, with regular hexagon
Inner space, as measuring chamber 18.Measuring circuit plate 21 is installed in the measuring chamber 18, the measuring circuit plate 21 can be used
PCB is made, be provided with measuring circuit plate 21 battery 16, LED light 14 and be sequentially connected analog-digital converter 3,
Electrical to optical converter 12 and fiber optic cable interface 13, the input of the analog-digital converter 3 are electrically connected with the pedestal 1, and the optical cable connects
Mouth 13 connects plug 102 by optical cable and bimodulus optical cable 103 is connected with externally measured terminal.The LED light 14 is connected to
On line between the electrical to optical converter 12 and cable interface 13, indicating fault is can be used as.The analog-digital converter 3, electric light
Converter 12, fiber optic cable interface 13 are welded in measuring circuit plate 21 with LED light 14, and the battery 16 is arranged on rigid insulation
In the battery case 15 that material is made, the battery case 15 is fixed in measuring circuit plate 21 by trip bolt 5, and battery 16 passes through
Cable 4 is connected with analog-digital converter 3 and electrical to optical converter 12, is that analog-digital converter 3 and electrical to optical converter 12 provide power supply.
Two pedestals 1 are located at the left and right sides of instrument warehouse 6, and the left and right sides bulkhead of instrument warehouse 6 is fixed respectively by screw
On the inner side end of two pedestals 1, the screw passes through the bulkhead of instrument warehouse 6, its head to be stuck in measuring chamber 18.Install
When, the binding post 2 being connected with the input of digital analog converter 3 is enclosed within the head of screw, make digital analog converter 3 and the structure of pedestal 1
Into electrical connection.The measuring circuit plate 21 is then fixed on the front/rear side bulkhead of instrument warehouse 6 by screw 17.
Described externally measured terminal is provided with optical-electrical converter 104, and the optical-electrical converter 104 connects plug by optical cable
102 and optical cable 103 be connected with fiber optic cable interface 102, the output end of the optical-electrical converter 104 and voltmeter/ammeter 105 or
Electric quantity data acquisition recording equipment 106 is connected, by the stored record signal data of electric quantity data acquisition recording equipment 106 or by electricity
Pressure table/ammeter 105 is directly displayed.
Because optical cable 103 is non-conductive transmission medium, therefore tested loop and the measuring terminals instrument of high direct voltage can be realized
The security isolation at instruments and meters end.
The utility model current divider can be arranged in Feeding System of Urban Rail Transit traction substation, be series at straightening high
On stream bus or feeder line, when the shunt resistance in current divider flows through load current, the two ends of cylindrical shunt resistance 20 can produce
Voltage, this voltage meets stricter linear relationship with electric current.Above-mentioned voltage is converted to digital voltage through analog-digital converter 3 to be believed
Number, optical signal is converted to through electrical to optical converter 12, this voltage signal is transmitted to measuring instrument instrument by optical cable, can show and work as
Preceding voltage or electric current exact value, thus achieve the security isolation of measured DC high-voltage circuit and measuring instrument instrument.On
Analog-digital converter 3 and electrical to optical converter 12 is stated to be powered by the battery 16 in power pack, battery 16 need change when, using day
The normal interruption maintenance time is changed.
General principle of the present utility model, principal character and advantage of the present utility model has been shown and described above.One's own profession
The technical staff of industry it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply illustrate principle of the present utility model, on the premise of the utility model spirit and scope are not departed from, the utility model is also
Various changes and modifications are had, the claimed scope of the utility model is by appending claims, specification and its equivalent
Define.
Claims (6)
1. city rail integrated form direct current current divider, it is characterised in that including two pieces of pedestals being oppositely arranged（1）, be arranged on
Two pedestals（1）Between some shunt resistances（20）With instrument warehouse（6）, the pedestal（1）It is the conductor of electricity, the instrument bin
Body（6）It is insulator, the shunt resistance（20）Two ends be separately fixed at two pedestals（1）Inner side end on, two pedestals (1)
End face outside be provided with the connecting elements of the tested circuit connection of connection；The instrument warehouse（6）Measuring circuit plate is inside installed
（21）, the measuring circuit plate（21）On the analog-digital converter being sequentially connected with is installed（3）, electrical to optical converter（12）Connect with optical cable
Mouthful（13）And be analog-digital converter（3）, electrical to optical converter（12）The battery of power supply（16）, the analog-digital converter（3）It is defeated
Enter end and pedestal（1）Electrical connection, the fiber optic cable interface（13）Output end externally measured terminal is connected by optical cable.
2. city rail according to claim 1 integrated form direct current current divider, it is characterised in that instrument warehouse（6）Two
Side bulkhead is separately fixed at two pedestals by screw（1）Inner side end on, the head of the screw is stuck in instrument warehouse（6）It is interior
Portion, screw afterbody insertion pedestal（1）In, screw is made up of conductive material, with digital analog converter（3）The terminals of input connection
Son（2）It is connected with screw head, makes digital analog converter（3）With pedestal（1）Constitute electrical connection.
3. city rail according to claim 2 integrated form direct current current divider, it is characterised in that the pedestal（1）If
Put in instrument warehouse（6）The left and right sides, the measuring circuit plate（21）Then it is fixed on instrument warehouse（6）Front/rear side bulkhead
On.
4. city rail according to claim 1 integrated form direct current current divider, it is characterised in that the shunt resistance
（20）It is cylindrical, copper manganese alloy resistance.
5. city rail according to claim 1 integrated form direct current current divider, it is characterised in that the measuring circuit plate
（21）It is provided with power supply indicator or malfunction indicator lamp.
6. the integrated form direct current current divider of the city rail according to any one of claim 1-5, it is characterised in that described
The mounting bracket of connecting elements bag one（9）With a movable bracket（10）, pedestal（1）End face outside is provided with chute（11）, the work
Dynamic bracket（10）It is assemblied in the chute（11）In, can be along chute（11）Track is slided closer or far from mounting bracket（9）；Connection
The wiring in tested loop is sandwiched in the mounting bracket（9）With movable bracket（10）Between, will by holder or screw-nut
Mounting bracket（9）With movable bracket（10）Locking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620735474.5U CN206208966U (en) | 2016-07-13 | 2016-07-13 | City rail integrated form direct current current divider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620735474.5U CN206208966U (en) | 2016-07-13 | 2016-07-13 | City rail integrated form direct current current divider |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206208966U true CN206208966U (en) | 2017-05-31 |
Family
ID=58755444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620735474.5U Expired - Fee Related CN206208966U (en) | 2016-07-13 | 2016-07-13 | City rail integrated form direct current current divider |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206208966U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110320404A (en) * | 2019-08-01 | 2019-10-11 | 桐乡市伟达电子有限公司 | A kind of analog-to-digital conversion sensor |
-
2016
- 2016-07-13 CN CN201620735474.5U patent/CN206208966U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110320404A (en) * | 2019-08-01 | 2019-10-11 | 桐乡市伟达电子有限公司 | A kind of analog-to-digital conversion sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170531 Termination date: 20170713 |