CN203071551U - Low-cost DC stabilized power supply for mines - Google Patents
Low-cost DC stabilized power supply for mines Download PDFInfo
- Publication number
- CN203071551U CN203071551U CN 201220743835 CN201220743835U CN203071551U CN 203071551 U CN203071551 U CN 203071551U CN 201220743835 CN201220743835 CN 201220743835 CN 201220743835 U CN201220743835 U CN 201220743835U CN 203071551 U CN203071551 U CN 203071551U
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- power supply
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- mines
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- modular converter
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Abstract
The utility model relates to a DC stabilized power supply, and particularly relates to a low-cost DC stabilized power supply for mines. The low-cost DC power supply for mines is composed of a protective shell and a power supply board, wherein the front end face of the protective shell is provided with a 12V indicating lamp and a 18V indicating lamp, the power supply board is installed in the protective shell, the rear end face of the protective shell is provided with an input hole and an output hole, an AC power cable and a DC power cable penetrate through the input hole and the output hole respectively and are connected with the power supply board, and the protective shell is internally filled with a silica gel protective layer wrapping the power supply board. The low-cost DC stabilized power supply for mines does not need a flameproof enclosure design, and solves the problem that an existing stabilized power supply is high in design and manufacturing cost, overlarge in size, heavy, and inconvenient to install in practical production. The low-cost DC stabilized power supply for mines has the advantages of stable output voltage, strong load carrying capacity and reliable operation, and is especially suitable to be used in occasions which has an explosive mixture of coal dust and methane but no corrosive gas damaging the insulation underground.
Description
Technical field
The utility model relates to a kind of D.C. regulated power supply, is specifically related to the mining D.C. regulated power supply of a kind of low cost.
Background technology
In the production and construction of Modern coal mines mine, the nearly all communication equipment in down-hole, control appliance etc. all need to use intrinsic safety D.C. regulated power supply powered operation, and its D.C. regulated power supply must have power supply protection.Now D.C. regulated power supply can only adopt the D.C. regulated power supply of explosion-suppression and intrinsic safety to design mostly, and its weak point one is that design and manufacture cost is higher, and second volume is excessive and heavy, installs inconvenient in real work is produced.
Summary of the invention
The purpose of this utility model is: provide that a kind of design and manufacture cost is low, small and exquisite being convenient to of volume install, and meet the coal mine downhole safety standard, higher to solve existing stabilized voltage power supply design and manufacture cost, volume is excessive and heavy, is not easy to the low-cost mining D.C. regulated power supply of installation question in actual production.
The technical solution of the utility model is:
The mining D.C. regulated power supply of a kind of low cost, it is made of protective casing and power panel, it is characterized in that: shape arranged side by side is provided with 12V indicator light and 18V indicator light on the front end face of protective casing, by installing rack power panel is housed in the protective casing, shape arranged side by side is provided with input hole and delivery outlet on the rear end face of protective casing, the AC power cable passes input hole respectively with the DC power supply cable and is connected with power panel with delivery outlet, and power panel is connected with the 18V indicator light with the 12V indicator light respectively by lead; Be filled with the silica gel protected layer that power panel is the parcel dress in the described protective casing.
Described power panel is made of 12V modular converter, 18V modular converter, 12V current foldback circuit and 18V current foldback circuit; 12V modular converter and 18V modular converter also connect, 12V modular converter and 18V modular converter respectively with 12V current foldback circuit and the series connection of 18V current foldback circuit.
The beneficial effects of the utility model are:
The mining D.C. regulated power supply of this low cost, adopt the modularized design of AC and DC conversion voltage stabilizing technique and standard, realized wide voltage input, stablize direct voltage output for two groups, do not need simultaneously the flameproof enclosure design, and meet the coal mine downhole safety standard, it is higher to have solved existing stabilized voltage power supply design and manufacture cost, volume is excessive and heavy, is not easy to the problem of installing in actual production.This low cost is mining D.C. regulated power supply output voltage stabilization, carrying load ability is strong, reliable operation, being specially adapted to has coal dust, methane explosive mixture under the coal mine, but the corrosive gas occasion of having the insulation of destroying is used.
Description of drawings
Fig. 1 is sectional structure schematic diagram of the present utility model;
Fig. 2 is the operation principle block diagram of the utility model power panel.
Among the figure: 1, protective casing, 2, power panel, 3, the 12V indicator light; 4,18V indicator light, 5, installing rack, 6, the 12V modular converter; 7,18V modular converter; 8,12V current foldback circuit, 9, the 18V current foldback circuit, 10, input hole; 11, delivery outlet; 12, AC power cable, 13, the DC power supply cable, 14, silica gel protected layer.
Embodiment
The mining D.C. regulated power supply of this low cost is made of protective casing 1 and power panel 2.Shape arranged side by side is provided with 12V indicator light 3 and 18V indicator light 4 on the front end face of protective casing 1, by installing rack 5 power panel 2 is housed in the protective casing 1.Power panel 2 is made of 12V modular converter 6,18V modular converter 7,12V current foldback circuit 8 and 18V current foldback circuit 9; 12V modular converter 6 and 18V modular converter 7 also connects, 12V modular converter 6 and 18V modular converter 7 respectively with 12V current foldback circuit 8 and 9 series connections of 18V current foldback circuit.
Shape arranged side by side is provided with input hole 10 and delivery outlet 11 on the rear end face of protective casing 1, and AC power cable 12 passes input hole 10 and is connected with 18V modular converter 7 with the 12V modular converter 6 of power panel 2.DC power supply cable 13 passes delivery outlet 11 and is connected with 18V current foldback circuit 9 with the current foldback circuit 8 of power panel 2 respectively.Current foldback circuit 8 is connected with the 18V indicator light with the 12V indicator light respectively with 18V current foldback circuit 9 and by lead.Be filled with the silica gel protected layer 14 that power panel 2 is the parcel dress in the protective casing 1, so that power panel 2 is formed insulation protection.
During D.C. regulated power supply work that this low cost is mining, earlier DC power supply cable 13 is connected to load (as: base station, leaky cable etc.), AC power cable 12 is connected to the AC power of 85V ~ 265V.In the course of work, the stable direct voltage of 12V current foldback circuit 8 output 12V, its ceiling voltage 12.3V.The stable direct voltage of 18V current foldback circuit 9 output 18V, its ceiling voltage 18.4V.Two groups of output voltage deviation values are smaller or equal to 8%, and shared same reference level, and load effect is smaller or equal to 10%, and source effect is smaller or equal to 5%, and output-current rating all is 350 mA for two groups.Its overcurrent protection operating value: 12V group is :≤700mA, Co=10 μ F, Lo=1 μ H; The 18V group is :≤750mA, Co=1 μ F, Lo=8.4 μ H.When 12V current foldback circuit 8 output load currents surpass 700mA, the protective circuit action, 12V indicator light 3 becomes redness by the original normal green simultaneously, just reset after needing to cut off input ac power.When 18V current foldback circuit 9 output load currents surpass 750mA, the protective circuit action, 18V indicator light 4 becomes redness by the original normal green simultaneously, need to cut off reset behind the input ac power normal.
The utility model design and manufacture cost is low, small and exquisite being convenient to of volume installed, do not need the flameproof enclosure design, and meet the coal mine downhole safety standard, it is higher to have solved existing stabilized voltage power supply design and manufacture cost, volume is excessive and heavy, is not easy to the problem of installing in actual production.The utility model output voltage stabilization, carrying load ability is strong, reliable operation, being specially adapted to has coal dust, methane explosive mixture under the coal mine, but does not have the occasion use of the corrosive gas of the insulation of destroying.
Claims (2)
1. mining D.C. regulated power supply of low cost, it is made of protective casing (1) and power panel (2), it is characterized in that: shape arranged side by side is provided with 12V indicator light (3) and 18V indicator light (4) on the front end face of protective casing (1), by installing rack (5) power panel (2) is housed in the protective casing (1), shape arranged side by side is provided with input hole (10) and delivery outlet (11) on the rear end face of protective casing (1), AC power cable (12) passes input hole (10) respectively with DC power supply cable (13) and is connected with power panel (2) with delivery outlet (11), and power panel (2) is connected with 18V indicator light (4) with 12V indicator light (3) respectively by lead; Be filled with the silica gel protected layer (14) that power panel (2) is the parcel dress in the described protective casing (1).
2. the mining D.C. regulated power supply of a kind of low cost according to claim 1; it is characterized in that: described power panel (2) is made of 12V modular converter (6), 18V modular converter (7), 12V current foldback circuit (8) and 18V current foldback circuit (9); 12V modular converter (8) and 18V modular converter (9) also connect, 12V modular converter (6) and 18V modular converter (7) respectively with 12V current foldback circuit (8) and 18V current foldback circuit (9) series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220743835 CN203071551U (en) | 2012-12-29 | 2012-12-29 | Low-cost DC stabilized power supply for mines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220743835 CN203071551U (en) | 2012-12-29 | 2012-12-29 | Low-cost DC stabilized power supply for mines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203071551U true CN203071551U (en) | 2013-07-17 |
Family
ID=48770302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220743835 Expired - Fee Related CN203071551U (en) | 2012-12-29 | 2012-12-29 | Low-cost DC stabilized power supply for mines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203071551U (en) |
-
2012
- 2012-12-29 CN CN 201220743835 patent/CN203071551U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20161229 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |