CN2212857Y - AC-DC frequency conversion speed-regulating water supply device for fire control - Google Patents
AC-DC frequency conversion speed-regulating water supply device for fire control Download PDFInfo
- Publication number
- CN2212857Y CN2212857Y CN 94247210 CN94247210U CN2212857Y CN 2212857 Y CN2212857 Y CN 2212857Y CN 94247210 CN94247210 CN 94247210 CN 94247210 U CN94247210 U CN 94247210U CN 2212857 Y CN2212857 Y CN 2212857Y
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- power supply
- utility
- model
- variable
- speed regulating
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Abstract
The utility model relates to an AC/DC frequency conversion speed regulating water supply device for fire control. The utility model is characterized in that the two ends of the coil arranged in the contactor of a DC power supply are connected with any two points of an automatic air switch, contact points are connected in parallel with a current limitation resistance R, and a battery pack V is respectively connected with a speed regulating frequency converter. When used, the utility model can realized the power supply to the speed regulating frequency converter by a DC power source device under the condition of no AC. The power supply of the speed regulating frequency converter to an AC motor can be realized to ensure the normal running of a water pump in order to supply the water for the fire fighting. Less losses of personal safety, personal property, and government property can be realized. The utility model can be also used for an emergency device of a frequency control elevator.
Description
The utility model relates to a kind of fire-fighting alternating current-direct current frequency modulation water supply device.
In the fire extinguishing supply equipment that fire-fighting system is used, generally use AC converter at present.It is 380V alternating current with civil power after the variable-frequency governor frequency conversion for alternating current motor send electricity, and drive water pump and supply water.In case mains failure or interim outage, AC converter can't be worked, and then alternating current motor and water pump can't move, and fire demand water can't obtain, and then fire can not in time put out.
The purpose of this utility model is to provide a kind of and can power voluntarily under no civil power or interim powering-off state for addressing the above problem, and fire-fighting is with alternating current-direct current frequency modulation water supply device.
The technical solution of the utility model realizes as follows: the frequency control of fire-fighting alternating current-direct current comprises automatic air-break switch ZDK, alternating current motor JD, variable-frequency governor, water pump, also comprise be furnished with contactor C, the DC power supply of contact C1, battery pack V and current-limiting resistance R.The coil two ends of contactor C are connected on respectively on two contacts of automatic air-break switch ZDK, and contact C1 is connected in parallel on the current-limiting resistance R, and the positive pole of battery pack V is connected with the P point of variable-frequency governor through current-limiting resistance R, and negative pole is connected with the N point of variable-frequency governor.
Adopt alternating current-direct current frequency modulation water supply device, under the situation of no civil power or interim outage, can power to variable-frequency governor, guarantee the water supply installation operate as normal and in time extinguish fire by DC power supply.This device construction is simple, and cost is low, is easy to installation and debugging, and is easy to the transformation to used equipment.Also can or be used for the domestic water supply device as the emergency set of frequency control elevator.
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing:
Accompanying drawing one, fire-fighting alternating current-direct current frequency modulation water supply structure drawing of device.
Among the figure 1, frequency conversion transfers device 2, water pump 3 DC power supply
As shown in the figure: AC power is connected with input R, S, the T of variable-frequency governor (1) through automatic air-break switch ZDK.Coil two ends among the contactor C in the DC power supply (3) be connected on input S point and T point respectively.Battery pack V and charging current limiter resistance R are serially connected between the anodal P and negative pole N of variable-frequency governor.After the automatic air-break switch ZDK closure, when ac power supply, the coil two ends of contactor C get, then contact C1 disconnects, the anodal P of speed governing frequency converter (1) charges to battery pack V through the charging current limiter resistance R, the variable frequency power supply of variable-frequency governor (1) output simultaneously, power supply are given with output U, the V of variable-frequency governor (1), the alternating current motor that W joins and are driven water pump (2) work.
When ac power supply interrupts, the coil losing electricity of contactor C, contact C1 closure then, variable-frequency governor (1) stops the charging to battery pack V, and provides DC power supply through contact C1 to variable-frequency governor by battery pack V.Behind the power inverter that variable-frequency governor (1) provides DC power supply (3) to alternating current motor JD power supply and drive water pump (2) work.
Claims (1)
1, a kind of fire-fighting alternating current-direct current frequency modulation water supply device, it comprises automatic air-break switch ZDK, alternating current motor JD, variable-frequency governor (1), water pump (2), it is characterized in that it also comprise be furnished with contactor C, the DC power supply (3) of contact C1, battery pack V and current-limiting resistance R; The coil two ends of its contactor C are connected to respectively on automatic air-break switch ZDK two contacts, and contact switch C1 and current-limiting resistance R also connect, and the positive pole of battery pack V joins through the P point of current-limiting resistance R and variable-frequency governor (2), and the N point of negative pole and variable-frequency governor (1) joins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94247210 CN2212857Y (en) | 1994-12-09 | 1994-12-09 | AC-DC frequency conversion speed-regulating water supply device for fire control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94247210 CN2212857Y (en) | 1994-12-09 | 1994-12-09 | AC-DC frequency conversion speed-regulating water supply device for fire control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2212857Y true CN2212857Y (en) | 1995-11-15 |
Family
ID=33852494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94247210 Expired - Fee Related CN2212857Y (en) | 1994-12-09 | 1994-12-09 | AC-DC frequency conversion speed-regulating water supply device for fire control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2212857Y (en) |
-
1994
- 1994-12-09 CN CN 94247210 patent/CN2212857Y/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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |