CN205786790U - DC voltage transformer - Google Patents
DC voltage transformer Download PDFInfo
- Publication number
- CN205786790U CN205786790U CN201620543754.6U CN201620543754U CN205786790U CN 205786790 U CN205786790 U CN 205786790U CN 201620543754 U CN201620543754 U CN 201620543754U CN 205786790 U CN205786790 U CN 205786790U
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- CN
- China
- Prior art keywords
- circuit
- housing
- upper shell
- over circuit
- bleeder circuit
- 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.)
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Abstract
The open a kind of volume of this utility model is little, antivibration and good heat dissipation effect, the DC voltage transformer that reliability is high, there are installing plate and the housing being placed on installing plate, housing is provided with high voltage input terminal and low-voltage output, the bleeder circuit connected with high voltage input terminal and the signal isolation change-over circuit connected with low-voltage output it is provided with in housing, connected by wire between bleeder circuit with signal isolation change-over circuit, described housing is connected by upper shell and lower house and forms, described bleeder circuit is placed in upper shell, bleeder circuit surrounding package has heat-conducting glue entirety embedding layer, upper shell upper surface is provided with heat abstractor, described isolation change-over circuit is placed in lower house, the components and parts covering of isolation change-over circuit is equipped with resin embedding layer.
Description
Technical field
This utility model relates to a kind of DC voltage transformer, especially a kind of volume is little, antivibration and good heat dissipation effect, can
By the DC voltage transformer that property is high.
Background technology
DC voltage transformer (or claiming passive direct-current voltage transducer) is to be isolated change-over circuit by bleeder circuit with signal
Constituting, bleeder circuit has resistor voltage divider circuit and clamping protective circuit, and signal isolation change-over circuit is then by input protection circuit, benefit
Repay power supply circuits, adjustment compensates circuit, oscillation circuit, transformer isolation circuit, rectification change-over circuit connect successively and form.Dividing potential drop
The high-voltage dc voltage dividing potential drop that circuit will be inputted, again through too much after protection circuit, compensation power supply circuits, adjustment compensate circuit
The oscillating circuit conversion isolation of tap high frequency transformer composition, eventually passes precise rectification circuit output and the high straightening inputted
Flow the proportional voltage of signal or current signal.The former rim portion voltage that can directly use measurement end is operated, it is not necessary to use volume
Outer increase power supply, wiring is simple.The structure of existing DC voltage transformer has installing plate and is placed on installing plate
Housing, is provided with high voltage input terminal and low-voltage output on housing, be provided with in same housing connect with high voltage input terminal point
Volt circuit and the signal isolation change-over circuit connected with low-voltage output, each divider resistance all exposes in atmosphere, owing to producing
It is 500V ~ 2000V high pressure occasion that product are applied to rated voltage, and there are the following problems:
(1) need to isolate between divider resistance and installation power distribution cabinet metal shell, it is therefore desirable to use insulation
Support or insulation board, respectively fixed partial pressure resistance and signal isolation change-over circuit, ensure electrically raising certain height
Insulation, not only makes that small product size is big, vibration resistance is poor, and wastes time and energy, produce install cumbersome；
(2) the easily oxidation such as the wire junction point of divider resistance, pad, and can be because of shadows such as condensation in season in spring and autumn, filths
Ring and cause the potential safety hazards such as creepage, short-circuit；
(3) product dispels the heat mainly by resistive surface cross-ventilation, because the thermal capacity of resistance own is little, dispels the heat poor, and impact is produced
The reliability of product.
Summary of the invention
The present invention is to solve the above-mentioned technical problem existing for prior art, it is provided that a kind of volume is little, antivibration and dissipating
The DC voltage transformer that thermal effect is good, reliability is high.
The technical solution of the present invention is: a kind of DC voltage transformer, has installing plate and the shell being placed on installing plate
Body, is provided with high voltage input terminal and low-voltage output on housing, is provided with the bleeder circuit connected with high voltage input terminal in housing
And the signal isolation change-over circuit connected with low-voltage output, by wire phase between bleeder circuit and signal isolation change-over circuit
Connecing, described housing is connected by upper shell and lower house and forms, and described bleeder circuit is placed in upper shell, bleeder circuit surrounding package
Having heat-conducting glue entirety embedding layer, upper shell upper surface is provided with heat abstractor, and described isolation change-over circuit is placed in lower house, isolation
The components and parts covering of change-over circuit is equipped with resin embedding layer.
Described upper shell upper surface is provided with earth terminal.
Described heat abstractor is grid or radiator.
This utility model is bleeder circuit and signal to be isolated change-over circuit set up separately in upper and lower two housings and at circuit
It is with outward embedding layer, is not required to insulating carriage or insulation board fixed partial pressure resistance and signal isolation change-over circuit ensures electrically
Insulation so that small product size is little, vibration resistance is strong, and time saving and energy saving, produce installation simple and convenient, reduce product cost,
Improve production efficiency；The wire junction point of divider resistance, pad etc. all with air exclusion and the most oxidizable, will not be because of spring and autumn
Season condensation, the impact such as filth cause creepage, short-circuit etc., eliminate potential safety hazard；Product good heat dissipation effect, reliability is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model embodiment 1.
Fig. 2 is the structural representation of this utility model embodiment 2.
Detailed description of the invention
Embodiment 1:
As shown in Figure 1: have installing plate 1 and the housing 2 being placed on installing plate 1, housing 2 is provided with high voltage input terminal 3 and
Low-voltage output 4, is provided with the bleeder circuit 5 connected with high voltage input terminal 3 and the letter connected with low-voltage output 4 in housing 2
Number isolation change-over circuit 6, is connected by wire 7 between bleeder circuit 5 with signal isolation change-over circuit 6, and bleeder circuit 5 will divide
The element of volt circuit welds in the circuit board, and the components and parts welding that signal isolation change-over circuit 6 will isolate change-over circuit is online
On the plate of road, upper shell 2-1 that housing 2 is made up of plastic resin and lower house 2-2 is connected by screw and forms, upper shell 2-1 with
Not having horizontal baffle, bleeder circuit 5 to be placed in the upper end in upper shell 2-1 between lower house 2-2, bleeder circuit 5 surrounding package has
Heat-conducting glue entirety embedding layer 8, upper shell 2-1 upper surface has the heat abstractor 9 that grid is constituted, isolation change-over circuit 6 to be placed in lower casing
Lower end in body 2-2, the components and parts covering of isolation change-over circuit 6 is equipped with resin embedding layer 10.
Embodiment 2:
As shown in Figure 2: have installing plate 1 and the housing 2 being placed on installing plate 1, housing 2 is provided with high voltage input terminal 3 and
Low-voltage output 4, high voltage input terminal 3 is provided with cluster parachute, be provided with in housing 2 bleeder circuit 5 connected with high voltage input terminal 3 and
The signal isolation change-over circuit 6 connected with low-voltage output 4, passes through wire between bleeder circuit 5 and signal isolation change-over circuit 6
7 connect, bleeder circuit 5 will bleeder circuit element weld in the circuit board, signal isolation change-over circuit 6 will isolate conversion
The components and parts of circuit weld in the circuit board, and upper shell 2-1 and lower house 2-2 that housing 2 is made up of plastic resin pass through screw
Connect and form, between upper shell 2-1 and lower house 2-2, have horizontal baffle 12, bleeder circuit 5 to be placed in upper shell 2-1, dividing potential drop electricity
Road 5 surrounding package has heat-conducting glue entirety embedding floor 8, and upper shell 2-1 upper surface is provided with earth terminal 11 and heat abstractor (radiator)
9, isolation change-over circuit 6 is placed in lower house 2-2, and the components and parts covering of isolation change-over circuit 6 is equipped with resin embedding layer 10.
Claims (3)
1. a DC voltage transformer, has installing plate (1) and the housing (2) being placed on installing plate (1), sets on housing (2)
There are high voltage input terminal (3) and low-voltage output (4), in housing (2), are provided with the bleeder circuit connected with high voltage input terminal (3)
(5) signal isolation change-over circuit (6) and with low-voltage output (4) connected, bleeder circuit (5) isolates change-over circuit with signal
(6) connected by wire (7) between, it is characterised in that: described housing (2) connected by upper shell (2-1) and lower house (2-2) and
Becoming, described bleeder circuit (5) is placed in upper shell (2-1), and bleeder circuit (5) surrounding package has heat-conducting glue entirety embedding layer (8),
Upper shell (2-1) upper surface is provided with heat abstractor (9), and described isolation change-over circuit (6) is placed in lower house (2-2), and isolation turns
Change the components and parts covering of circuit (6) equipped with resin embedding layer (10).
DC voltage transformer the most according to claim 1, it is characterised in that described upper shell (2-1) upper surface is provided with and connects
Ground end (11).
DC voltage transformer the most according to claim 1, it is characterised in that described heat abstractor (9) is grid or heat radiation
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620543754.6U CN205786790U (en) | 2016-06-07 | 2016-06-07 | DC voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620543754.6U CN205786790U (en) | 2016-06-07 | 2016-06-07 | DC voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205786790U true CN205786790U (en) | 2016-12-07 |
Family
ID=58133803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620543754.6U Active CN205786790U (en) | 2016-06-07 | 2016-06-07 | DC voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205786790U (en) |
-
2016
- 2016-06-07 CN CN201620543754.6U patent/CN205786790U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |