CN204290313U - A kind of building DC power supply - Google Patents
A kind of building DC power supply Download PDFInfo
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- CN204290313U CN204290313U CN201420742730.4U CN201420742730U CN204290313U CN 204290313 U CN204290313 U CN 204290313U CN 201420742730 U CN201420742730 U CN 201420742730U CN 204290313 U CN204290313 U CN 204290313U
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Abstract
The utility model is a kind of building DC power supply, comprise direct current supply bus civil power being converted to galvanic direct current supply module and direct current supply module is sent to the power receiving equipment be distributed in building, all power receiving equipments are connected in parallel between main track and negative wire, between described power receiving equipment and direct current supply bus, be also provided with direct current supply control circuit; Direct current supply control circuit comprises: be arranged in parallel and connecting the access lightning protection surge circuit on direct current supply bus on main track and negative wire, be connected on main track by electric isolating circuit, be connected in the high speed turn-off switch in negative wire.This electric power system designs for realizing building domestic demand multiple spot low-voltage DC supply function, use this system can increase whole DC power-supply system reliability and stability, also can simplify difficulty of construction while realizing higher reliability, reduce costs, increase system utilization rate.
Description
Technical field
The utility model relates to building DC power supply.
Background technology
In building, there is a lot of place to have unattended equipment, these equipment are all some direct-flow electricity utilization apparatus substantially, at present, power to give the direct-flow electricity utilization apparatus be distributed in everywhere in building, what generally adopt is exactly gather materials on the spot, utilize and be arranged on AC power in the wall of various places in building by becoming direct current after rectification to each power consumption equipment, this is a kind of effective supply power mode, but because the Alternating Current Power Supply in public building is available to many users', in order to quantifier, therefore, due between public building, need to set up power supply measuring equipment at every layer of each supply terminals and electric main is converted to direct current.Like this, will power supply cost be increased, meanwhile, add difficulty of construction.
Utility model content
The purpose of this utility model is, provides that not needing gathers materials on the spot in building and be respectively the building DC power supply being arranged in public building the unified direct current supply that direct-flow electricity utilization apparatus is everywhere powered.
The technical solution of the utility model is a kind of building DC power supply, comprise direct current supply bus civil power being converted to galvanic direct current supply module and described direct current supply module is sent to the power receiving equipment be distributed in building, described power supply buses comprises main track and negative wire, all power receiving equipments are connected in parallel between main track and negative wire, between described power receiving equipment and direct current supply bus, be also provided with direct current supply control circuit; Described direct current supply control circuit comprises: be arranged in parallel and connecting the access lightning protection surge circuit on direct current supply bus on main track and negative wire, be connected on main track by electric isolating circuit, be connected in the high speed turn-off switch in negative wire.
The utility model is the system that the direct-flow electricity utilization apparatus be distributed in public building arranges concentrated direct current supply and direct current power transmission, this electric power system designs for realizing building domestic demand multiple spot low-voltage DC supply function, use this system can increase whole DC power-supply system reliability and stability, also can simplify difficulty of construction while realizing higher reliability, reduce costs, increase system utilization rate.
Preferred version of the present utility model comprises: described high speed turn-off switch comprises switched field effect pipe, turn-off time control circuit, power receiving equipment current detection circuit; Described switched field effect pipe is connected on zero line, the output of power receiving equipment current detection circuit connects described turn-off time control circuit and judges that whether the electric current of the power receiving equipment that power receiving equipment current detection circuit detects is in safe range, once exceed, control switch field effect transistor disconnect described in described high speed turn-off switch be also provided with alarm indicating circuit, the electric current of the power receiving equipment that power receiving equipment current detection circuit detects not in safe range time send alarm.
Described is the device realizing power supply buses and power receiving equipment one-way conduction by electric isolating circuit.
Below with reference to drawings and Examples, the utility model is described in detail.
Accompanying drawing explanation
Fig. 1 is DC power supply overall diagram of the present utility model.
Fig. 2 is direct current supply control circuit theory diagram of the present utility model.
Embodiment
Embodiment 1, the present embodiment is a kind of building DC power supply, comprise direct current supply bus civil power being converted to galvanic direct current supply module and described direct current supply module is sent to the power receiving equipment be distributed in building, power supply buses comprises main track and negative wire, all power receiving equipments are connected in parallel between main track and negative wire, between power receiving equipment and direct current supply bus, be also provided with direct current supply control circuit.As shown in Figure 1.During centrally connected power supply, convert civil power to direct current by direct current supply module and be then transported to public building power receiving equipment everywhere, these power receiving equipments are all DC suppling equipments, this electric power system designs for realizing building domestic demand multiple spot low-voltage DC supply function, use this system can increase whole DC power-supply system reliability and stability, also can simplify difficulty of construction while realizing higher reliability, reduce costs, increase system utilization rate.
In the present embodiment, direct current supply control circuit as shown in Figure 2, comprising: be arranged in parallel and connecting the access lightning protection surge circuit on direct current supply bus on main track and negative wire, be connected on main track by electric isolating circuit, be connected in the high speed turn-off switch in negative wire.High speed turn-off switch comprises switched field effect pipe, turn-off time control circuit, power receiving equipment current detection circuit; Switched field effect pipe is connected on zero line, the output of power receiving equipment current detection circuit connects described turn-off time control circuit and judges that whether the electric current of the power receiving equipment that power receiving equipment current detection circuit detects is in safe range, once exceed, control switch field effect transistor disconnects, high speed turn-off switch is also provided with alarm indicating circuit, the electric current of the power receiving equipment that power receiving equipment current detection circuit detects not in safe range time send alarm.It is the device realizing power supply buses and power receiving equipment one-way conduction by electric isolating circuit.
As shown in Figure 1, system is powered from fixed point electric main and is connected to direct current supply module, and direct current supply module to exchange the equipment being converted to required low-voltage direct, to be supplied in building by direct current supply bus from direct current supply module.Again from the direct current supply bus in building, in required power supply place, drawn from bus by direct current supply control circuit, bus forms loop by two, and wherein one is main track, and one is negative wire, also can be called live wire and zero line, supply power receiving equipment.As shown in Figure 1, power receiving equipment is caused from direct current supply bus by direct current supply control circuit; If any N number of power receiving equipment in building, then caused from power supply buses by direct current supply control circuit N.So, system just can according to the quantity of actual floor current collector in the world, and the total current needed for calculating matches direct current supply module, from can reducing the disposable input cost of equipment and improve the service efficiency of equipment by the building different according to reality.
Shown in accompanying drawing 2, positive and negative two lines that bus is introduced are connected to " access lightning-protection surge " in direct current supply control circuit, because power supply buses shuttles back and forth in building metope in building, and in building wall, have metal material, when thunderstorm weather, mutual inductance can be formed with cable, produce indirect lightning strike and surge voltage, damage and interference can be caused to power receiving equipment.And the effect of stopping is played in the equipment damage that " access lightning-protection surge " design can cause this type of phenomenon and interference, improves electric power system to the reliability of power receiving equipment and fail safe.
And in " the current collector isolation " of rear end, a Schottky diode is adopted to be connected in series between input main track and " power receiving equipment ", by bus and power receiving equipment isolation, playing can only from bus to the effect of power receiving equipment one-way flow, the interference signal preventing power receiving equipment from producing oppositely adds on DC bus, causes interference to whole electric power system.
Rear end dotted line frame entirety forms a high speed turn-off switch.Include one " power receiving equipment current detecting ", " turn-off time control circuit ", field effect transistor electronic devices and components.
" power receiving equipment current detecting " wherein can detect the electric current of power receiving equipment accurately, produce corresponding signal to be supplied to " turn-off time control circuit ", " turn-off time control circuit " can according to the signal of prime, control the real-time switching of field effect transistor electronic devices and components, realize by switching field effect transistor electronic devices and components the switching disconnecting and connect power receiving equipment.
The operating state of last alarm indicating circuit indicator light instruction DC control circuit.
The present embodiment circuit advantage:
Because field effect transistor is electronic devices and components, be swift in response during shutoff, it is large to close impedance of having no progeny, so power receiving equipment disconnects the reaction time can reach Microsecond grade, disconnects rapidly, stable, reliable, sparking when can not produce power-off and voltage oscillation.Another field effect transistor has the advantage that access resistance is little when opening, and has the advantage that when power receiving equipment is connected, direct current supply control circuit internal loss is little.
Be also advantageous in that herein, owing to have detected the electric current of power receiving equipment accurately, the electric current that normally can work according to the reality of current collector, arranges the size of current value in " power receiving equipment current detecting " circuit, and the field effect transistor electronic devices and components composition high speed turn-off switching circuit that apolegamy is suitable.
And when receiving end produces (as overload and short circuit are) electric current increase under abnormal conditions, " power receiving equipment current detecting " in the high speed turn-off circuit formed in dotted line frame, judgement can be carried out and action according to the size of the running current value arranged, cut-out power receiving equipment is powered, and period does not stop to detect, once after power receiving equipment recovery, control circuit automatically again can detect and restore electricity, pre-without the need to Human disturbance, achieve higher intellectuality.
Even if when now power receiving equipment there occurs irreversible damage, power receiving equipment loop is caused to be short-circuited irrecoverable, powered instant equipment also can disconnect by the high speed turn-off switch in direct current supply control circuit, equipment is avoided to damage further, drag down with the power receiving equipment that guarantee DC bus-bar voltage can not be shorted, all the other power receiving equipments on its bus are impacted, ensure that the normal work under electric power system extreme case.
Simultaneously this kind damages the phenomenon causing shutoff due to power receiving equipment, and alarm indicating circuit can use indicator light indication fault, notifies that attendant overhauls.
Claims (4)
1. a building DC power supply, comprise direct current supply bus civil power being converted to galvanic direct current supply module and described direct current supply module is sent to the power receiving equipment be distributed in building, described power supply buses comprises main track and negative wire, all power receiving equipments are connected in parallel between main track and negative wire, it is characterized in that: between described power receiving equipment and direct current supply bus, be also provided with direct current supply control circuit;
Described direct current supply control circuit comprises: be arranged in parallel and connecting the access lightning protection surge circuit on direct current supply bus on main track and negative wire, be connected on main track by electric isolating circuit, be connected in the high speed turn-off switch in negative wire.
2. building DC power supply according to claim 1, is characterized in that: described high speed turn-off switch comprises switched field effect pipe, turn-off time control circuit, power receiving equipment current detection circuit; Described switched field effect pipe is connected on zero line, the output of power receiving equipment current detection circuit connects described turn-off time control circuit and judges that whether the electric current of the power receiving equipment that power receiving equipment current detection circuit detects is in safe range, once exceed, control switch field effect transistor disconnects.
3. building DC power supply according to claim 2, is characterized in that: described high speed turn-off switch is also provided with alarm indicating circuit, the electric current of the power receiving equipment that power receiving equipment current detection circuit detects not in safe range time send alarm.
4. building DC power supply according to claim 1, is characterized in that: described is the device realizing power supply buses and power receiving equipment one-way conduction by electric isolating circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420742730.4U CN204290313U (en) | 2014-12-01 | 2014-12-01 | A kind of building DC power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420742730.4U CN204290313U (en) | 2014-12-01 | 2014-12-01 | A kind of building DC power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204290313U true CN204290313U (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420742730.4U Active CN204290313U (en) | 2014-12-01 | 2014-12-01 | A kind of building DC power supply |
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| Country | Link |
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| CN (1) | CN204290313U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110137936A (en) * | 2019-05-07 | 2019-08-16 | 许继电气股份有限公司 | A kind of building low-voltage DC supply system |
| CN112968439A (en) * | 2021-02-08 | 2021-06-15 | 新城控股集团企业管理有限公司 | Configuration method of power supply bus |
-
2014
- 2014-12-01 CN CN201420742730.4U patent/CN204290313U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110137936A (en) * | 2019-05-07 | 2019-08-16 | 许继电气股份有限公司 | A kind of building low-voltage DC supply system |
| CN110137936B (en) * | 2019-05-07 | 2023-09-05 | 许继电气股份有限公司 | Building low-voltage direct current power supply system |
| CN112968439A (en) * | 2021-02-08 | 2021-06-15 | 新城控股集团企业管理有限公司 | Configuration method of power supply bus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 518000 Floors 1-3 and 1-5 of Block A, Block B2, Jinweiyuan Industrial Plant, Longshan District, Pingshan New District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Gold Power Technology Co., Ltd. Address before: 518000 Shenzhen, Guangdong, Pingshan new industrial zone, poly dragon hill area Jinwei Industrial Zone A 1 floor. Patentee before: Shenzhen Gold Power Technology Co., Ltd. |
|
| CP02 | Change in the address of a patent holder |