CN211922831U - Constant-pressure variable-frequency fire-fighting water supply system - Google Patents
Constant-pressure variable-frequency fire-fighting water supply system Download PDFInfo
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- CN211922831U CN211922831U CN202020347659.5U CN202020347659U CN211922831U CN 211922831 U CN211922831 U CN 211922831U CN 202020347659 U CN202020347659 U CN 202020347659U CN 211922831 U CN211922831 U CN 211922831U
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Abstract
The utility model relates to a constant voltage frequency conversion fire control water supply system for outdoor subaerial fire hydrant, it includes: the fire hydrant system comprises a reservoir, a network pipe for communicating the reservoir with the fire hydrant, a water pump for communicating the network pipe, a driving motor connected to the water pump, a frequency converter electrically connected with a driving electric appliance, a controller and a pressure sensor; the water storage tank is used for storing fire-fighting water and communicated to each fire hydrant through the network pipe, the driving motor drives the water pump to pump water in the water storage tank into the network pipe and form certain water pressure in the network pipe, the pressure sensor transmits a pressure signal to the controller, the controller sends a working instruction according to the received pressure signal to enable the frequency converter connected to the controller to work, and the frequency converter adjusts the rotating speed of the driving motor through frequency adjustment, so that the water pressure in the network pipe is kept constant. The utility model discloses have nimble control network pipeline and stabilize the effect of water pressure.
Description
Technical Field
The utility model belongs to the technical field of fire-fighting equipment's technique and specifically relates to a constant voltage frequency conversion fire control water supply system is related to.
Background
The fire water supply system is the most important link in fire fighting equipment, and ensures that the normal water pressure and water quantity of a fire fighting pipeline play a vital role in the expansion of fire fighting work. Because of the special requirements of fire safety, strict requirements are imposed on constant-pressure water supply pressure, and the most important disadvantage of outdoor fire hydrants is that water pressure cannot be kept constant, so that the water outlet pressure of part of equipment is too high, the water outlet pressure of part of equipment is too low, the flow of fire water is too low, and even the fire water cannot be discharged in a fatal situation. And because the equipment is added, the scope of change is small, the flexibility is not strong, and the device can not be used in a wider range.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a constant voltage frequency conversion fire control water supply system, it has nimble control network pipeline and stabilizes the advantage of water pressure to the not enough of prior art existence.
The above object of the present invention can be achieved by the following technical solutions:
a constant pressure variable frequency fire service water supply system for an outdoor above ground fire hydrant, comprising: the fire hydrant system comprises a reservoir, a network pipe for communicating the reservoir with the fire hydrant, a water pump for communicating the network pipe, a driving motor connected to the water pump, a frequency converter electrically connected with a driving electric appliance, a controller and a pressure sensor.
By adopting the technical scheme, the reservoir is used for storing fire-fighting water, and communicate to each fire hydrant through the network management, driving motor drive water pump with the water pump in the reservoir to the network management in, and form certain water pressure in the network management, pressure sensor conveys pressure signal to the controller, the controller sends the operating instruction according to the pressure signal of accepting, make the converter that connects on the controller carry out frequency conversion work, power frequency power is connected to the input of converter, driving motor is connected to its output, adjust driving motor's rotational speed through the adjustment of frequency, thereby make the water pressure in the network management keep invariable.
The present invention may be further configured in a preferred embodiment as: the network management is provided with a plurality of network management pipes, communicating pipes are connected among the network management pipes, and valves are arranged on the communicating pipes.
By adopting the technical scheme, the communicating pipe arranged between the network managers can open the valve after a certain pipeline or water pump breaks down, and can communicate the adjacent network managers through the communicating pipe, and one water pump is used for providing water flow to the two network managers.
The present invention may be further configured in a preferred embodiment as: the valve is an electromagnetic valve.
By adopting the technical scheme, the electromagnetic valves are electrically connected to the controller, and when the controller detects that the pressure value of one pressure sensor is zero or the numerical value is very small, the controller can send out an instruction to open the electromagnetic valves adjacent to the fault network management and communicate with the adjacent network management, so that the constant pressure of water flow in each network management is ensured.
The present invention may be further configured in a preferred embodiment as: and a pressurizing motor is arranged in the net pipe.
Through adopting above-mentioned technical scheme, after the fire incident takes place, the fire hydrant is opened, and the rivers pressure in the fire hydrant reduces simultaneously, and the controller can send the work order to the pressurized motor, is that rivers in the network management keep great flow, guarantees the water consumption of fire control task.
The present invention may be further configured in a preferred embodiment as: the water pump is provided with a speed changer, and the rotating speed is electrically connected with the controller.
By adopting the technical scheme, the speed changer can transmit the rotating speed signal of the driving motor to the controller, and can judge whether the leakage phenomenon exists in the network management or not by matching the signal of the pressure sensor, thereby being convenient for detection and maintenance.
The present invention may be further configured in a preferred embodiment as: the output end of the frequency converter is connected with a thermal relay, and the thermal relay is electrically connected with the driving motor.
Through adopting above-mentioned technical scheme, when a certain water pump provided rivers to a plurality of net pipes in, its load increase, thermal relay can protect driving motor and prevent its long-time overload operation, improves driving motor's life.
The present invention may be further configured in a preferred embodiment as: the thermal relay is electrically connected with an alarm.
By adopting the technical scheme, after the action of the thermal relay, the auxiliary contact acts and is closed, the alarm circuit is connected, and the alarm sends out an alarm signal to remind a fire fighter that the driving motor is overloaded to run an accident.
The present invention may be further configured in a preferred embodiment as: the auxiliary terminal of the thermal relay is electrically connected with the controller.
Through adopting above-mentioned technical scheme, after the action of thermal relay, its auxiliary contact transmits action signal to the controller, makes the controller send the stop work signal, and the staff of being convenient for overhauls, can save electric power resource simultaneously.
To sum up, the utility model discloses a following at least one useful technological effect:
1. the controller is connected with the frequency converter to control the operation of the water pump, and the pressure sensor in the network pipe can transmit a pressure signal to the controller so that the controller adjusts the operation state of the line water pump and the water flow pressure in the network pipe is kept constant;
2. the frequency converter can not only adjust the rotating speed of the driving motor, but also realize soft start, so that the starting current of the driving motor is smaller, the impact on a power grid caused by overlarge starting current is reduced, the soft start and the shutdown of the driving motor are reduced, the impact on a network management by a water hammer effect can also be reduced, and the protection on the network management is improved.
Drawings
Fig. 1 is a structure diagram of the fire-fighting waterway of the utility model.
Fig. 2 is a schematic diagram of the circuit control system of the present invention.
Reference numerals: 11. a fire hydrant; 12. a reservoir; 13. network management; 131. a communicating pipe; 132. a valve; 133. a pressurizing motor; 14. a water pump; 141. a speed changer; 21. a drive motor; 22. a frequency converter; 23. a controller; 24. a pressure sensor; 31. a thermal relay; 32. an alarm.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, for the utility model discloses a constant voltage frequency conversion fire control water supply system for outdoor subaerial fire hydrant 11, include: the fire fighting water supply system comprises a reservoir 12, a plurality of net pipes 13, a water pump 14, a driving motor 21, a frequency converter 22, a controller 23 and a pressure sensor 24, wherein the reservoir 12 is used for storing fire fighting water, one end of each net pipe 13 is communicated to the reservoir 12, the other end of each net pipe 13 is communicated to a fire hydrant 11 on the outdoor ground, the water pump 14 is communicated on each net pipe 13, the water pump 14 is a centrifugal water pump 14 and is connected with the driving motor 21, and the driving motor 21 is used for providing working power for the water pump 14; the output end of the frequency converter 22 is electrically connected with the driving motor 21, the input end of the frequency converter 22 is electrically connected with the controller 23, a plurality of pressure sensors 24 are arranged, the number of the pressure sensors is the same as that of the network pipes 13, and each network pipe 13 is internally provided with one pressure sensor 24 which is electrically connected with the controller 23.
The driving motor 21 drives the water pump 14 to pump the water in the reservoir 12 into the network pipe 13, a certain water pressure is formed in the network pipe 13, the pressure sensor 24 converts the pressure value of the water in the network pipe 13 into an electric signal and transmits the electric signal to the controller 23, the controller 23 sends out a working instruction according to the received pressure signal to enable the frequency converter 22 connected to the controller 23 to execute frequency modulation work, the input end of the frequency converter 22 is connected with a power frequency power supply, the rotating speed of the driving motor 21 is adjusted by adjusting the frequency of the power frequency power supply, and therefore the water pressure in the network pipe 13 is kept constant.
A communication pipe 131 is connected between the plurality of mesh pipes 13 for communicating the adjacent mesh pipes 13, and the communication pipe 131 is provided with a valve 132, which is an electromagnetic valve, and is electrically connected to the controller 23. Under normal conditions, the electromagnetic valves are closed, each network management 13 operates independently, when a certain path of water pump 14 or driving motor 21 fails and stops working, the pressure sensor 24 on the fault line transmits the pressure value to the controller 23, if the pressure value received by the controller 23 is zero or the numerical value is very small, it is determined that the water pump 14 or driving motor 21 on the path fails and stops working, the controller 23 sends a working instruction, the electromagnetic valve adjacent to the fault network management 13 is opened and communicated with the adjacent network management 13, water flow is provided to the two network management 13 of the path and the fault line by using one water pump 14, and constant pressure of water flow in each network management 13 is ensured.
The thermal relay 31 is connected in series on the line between the frequency converter 22 and the controller 23, when a certain water pump 14 supplies water flow to the plurality of network pipes 13, the load of the water pump is increased, the thermal relay 31 can perform power-off protection on the driving motor 21, long-time overload operation of the driving motor is prevented, and the service life of the driving motor 21 and the safety of the motor operation process are improved. The auxiliary contact electricity of thermorelay 31 is connected with alarm 32, and another supplementary section terminal of thermorelay 31 is connected with controller 23, and when because the load is too big, the action of thermal relay 31 outage, when protecting the motor, its auxiliary contact action is closed to switch on alarm line, alarm 32 sends alarm signal, reminds fire fighter to have driving motor 21 to take place the overload operation accident, is convenient for in time discover trouble circuit, reduces the potential safety hazard. Meanwhile, the auxiliary contact transmits the action signal to the controller 23, so that the controller 23 sends out a work stopping signal, the maintenance is convenient for workers, the power resource can be saved, and the power cost is reduced.
A pressurizing motor 133 is provided inside each of the plurality of mesh tubes 13. After a fire accident occurs, the fire hydrant 11 is opened, meanwhile, the water flow pressure in the network pipe 13 is reduced, the pressure sensor 24 transmits a changed pressure signal to the controller 23, the controller can send a working instruction to the pressurizing motor 133 and send a working instruction to the driving motor 21 on the network pipe 13, the rotating speed of the driving motor 21 is increased, the water flow in the network pipe 13 keeps a large flow, and the water consumption of a fire fighting task is guaranteed.
A tachometer 141 is provided on a rotation shaft of the drive motor 21, and the tachometer 141 is electrically connected to the controller 23. During the working process of the driving motor 21, the rotating speed can be converted into an electric signal through the tachometer 141, the electric signal is transmitted to the controller 23, the controller 23 compares the rotating speed signal with the water pressure signal provided by the pressure sensor 24, when the values of the rotating speed signal and the water pressure signal are not matched, the fire hydrant 11 communicated with the network management system 13 can be judged to be in use, if the fire hydrant 11 is in a closed and non-started state, the leakage phenomenon in the network management system can be judged, and a worker can conveniently and timely maintain the fault network management system 13.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. A constant pressure variable frequency fire water supply system for outdoor above-ground fire hydrant (11), comprising:
a reservoir (12) for holding fire-fighting water;
a net pipe (13) with an inlet end communicated to the reservoir (12) and an outlet end communicated to the fire hydrant (11);
the water pump (14) is arranged on the net pipe (13) and is communicated with the net pipe (13);
the driving motor (21) is connected to the water pump (14) and is used for driving the water pump (14) to work;
the frequency converter (22) is electrically connected with the driving motor (21) and is used for adjusting the power frequency for driving the water pump (14) to work;
the controller (23) is electrically connected with the control end of the frequency converter (22) and is used for collecting a water pressure signal and sending a working instruction;
and the pressure sensor (24) is arranged on the inner side wall of the network pipe (13), is used for detecting the water pressure value and is electrically connected with the controller (23).
2. The constant-pressure variable-frequency fire-fighting water supply system according to claim 1, characterized in that: the network management system is characterized in that a plurality of network management systems (13) are arranged, a communication pipe (131) is connected between the network management systems (13), and a valve (132) is arranged on the communication pipe (131).
3. The constant-pressure variable-frequency fire-fighting water supply system according to claim 2, characterized in that: the valve (132) is a solenoid valve.
4. The constant-pressure variable-frequency fire-fighting water supply system according to claim 1, characterized in that: and a pressurizing motor (133) is arranged in the mesh pipe (13).
5. The constant-pressure variable-frequency fire-fighting water supply system according to claim 1, characterized in that: the water pump (14) is provided with a speed rotating device (141), and the rotating speed is electrically connected with the controller (23).
6. The constant-pressure variable-frequency fire-fighting water supply system according to claim 1, characterized in that: the output end of the frequency converter (22) is connected with a thermal relay (31), and the thermal relay (31) is electrically connected with the driving motor (21).
7. The constant-pressure variable-frequency fire-fighting water supply system according to claim 6, characterized in that: the thermal relay (31) is electrically connected with an alarm (32).
8. The constant-pressure variable-frequency fire-fighting water supply system according to claim 6, characterized in that: the auxiliary terminal of the thermal relay (31) is electrically connected with the controller (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020347659.5U CN211922831U (en) | 2020-03-18 | 2020-03-18 | Constant-pressure variable-frequency fire-fighting water supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020347659.5U CN211922831U (en) | 2020-03-18 | 2020-03-18 | Constant-pressure variable-frequency fire-fighting water supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211922831U true CN211922831U (en) | 2020-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020347659.5U Active CN211922831U (en) | 2020-03-18 | 2020-03-18 | Constant-pressure variable-frequency fire-fighting water supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211922831U (en) |
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2020
- 2020-03-18 CN CN202020347659.5U patent/CN211922831U/en active Active
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