CN211898693U - Pressure-stabilizing water supply system - Google Patents
Pressure-stabilizing water supply system Download PDFInfo
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- CN211898693U CN211898693U CN202020436511.9U CN202020436511U CN211898693U CN 211898693 U CN211898693 U CN 211898693U CN 202020436511 U CN202020436511 U CN 202020436511U CN 211898693 U CN211898693 U CN 211898693U
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Abstract
The utility model discloses a steady voltage water supply system relates to the water supply technology field, reach including water pump, electric node manometer and basis the signal control of electric node manometer the control circuit that the water pump opened and stops, control circuit includes main protection circuit, it has the start button to establish ties in the main protection circuit, works as need to press behind the water pump trouble the start button side can restart the water pump. The utility model discloses steady voltage water supply system has solved the technical problem that water pump motor easily burns out among the prior art, the utility model discloses steady voltage water supply system can effectual protection water pump motor not burnt out, has guaranteed the life of water pump.
Description
Technical Field
The utility model relates to a water supply technical field, in particular to steady voltage water supply system.
Background
At present, a lot of domestic water is pressure tank automatic voltage stabilization water supply, and the start and stop of a water pump is controlled by an electric node pressure gauge to provide stable water supply pressure. The control circuit schematic diagram is shown in fig. 1, a power switch SA is connected with the control circuit, an electric node pressure gauge controls the start and stop of a water pump according to the actual water pressure in a water supply system, the water pump is started when the water pressure reaches the lower pressure limit, and the water pump is stopped when the water pressure reaches the upper pressure limit, so that the water pressure of the water supply system is kept stable. In the main circuit of the water pump, a motor protector JD-5 is used for phase loss and overload protection of the water pump.
In the actual use process, the water pump is started and stopped frequently when the water consumption is large, so that the contactor KM1 contact is easily burnt out and has equal faults, the motor protector JD-5 detects that the fault action disconnects the control loop, but a power switch for connecting the control circuit is not disconnected, and the electrical node pressure gauge is not disconnected when the pressure upper limit is not reached, the main circuit of the water pump is connected after the motor protector JD-5 automatically resets, the water pump is started, the motor protector JD-5 is disconnected again when the fault is detected again, and the water pump is started again after the reset, and the water pump motor M is repeatedly circulated in such a way, so that the water pump motor M is easily burnt; the adhesion of contactor contact also can appear in service and lack equal trouble, even break off control circuit this moment, the contactor contact also can't break off, and the water pump still can continue to operate, burns out until water pump motor M.
Disclosure of Invention
To above defect, the utility model aims at providing a steady voltage water supply system, this steady voltage water supply system's water pump can not start because of motor protector resets after the trouble to can effectual protection water pump motor not burnt out, guaranteed the life of water pump.
In order to realize the purpose, the technical scheme of the utility model is that:
a stable-pressure water supply system comprises a water pump, an electric node pressure gauge and a control circuit for controlling the water pump to start and stop according to signals of the electric node pressure gauge, wherein the control circuit comprises a main protection circuit, a starting button is connected in series in the main protection circuit, and the water pump can be restarted by pressing the starting button after the water pump fails.
The motor protector, the first contactor and the second contactor are connected in series in a main circuit of the water pump.
The main protection circuit comprises a long closed contact of the motor protector, a long closed contact of the stop button, a long open contact of the start button and a coil of the first contactor which are connected in series, and a first long open auxiliary contact of the first contactor is connected with the start button in parallel.
Wherein, the model of motor protector is JD-8.
Wherein the control circuit further comprises a pressure control circuit connected in parallel with the main protection circuit.
The pressure control circuit comprises a second long opening auxiliary contact of the first contactor, and the second long opening auxiliary contact of the first contactor is electrically connected with three pressure control branches; the first pressure control branch comprises a first long open contact of a second relay and a coil of the second contactor which are connected in series; the second pressure control branch comprises the electrical node pressure gauge, the upper pressure limit end of the electrical node pressure gauge is electrically connected with a coil of a first relay, and the lower pressure limit end of the electrical node pressure gauge is electrically connected with a third pressure control branch; the third pressure control branch comprises a long closed contact of the first relay, a second long open contact of the second relay and a coil of the second relay which are connected in series, and the lower pressure limit end of the electrical node pressure gauge is electrically connected between the second long open contact of the second relay and the coil of the second relay.
The control circuit further comprises an alarm circuit connected with the main protection circuit in parallel.
The alarm circuit comprises a long closed contact of an alarm release button, and the long closed contact of the alarm release button is electrically connected with two alarm branches; the first alarm branch comprises a long open contact of the motor protector and a coil of a third relay which are connected in series, and the first long open contact of the third relay is connected with the long open contact of the motor protector in parallel; the second alarm branch comprises a second long open contact of the third relay and an alarm which are connected in series.
Wherein, the alarm is a buzzer.
The main protection circuit, the pressure control circuit and the alarm circuit are all electrically connected with a power switch, the power switch is electrically connected with a fuse, and the fuse is electrically connected with a power live wire; the coil of second contactor, the coil of first relay, the coil of second relay, the coil of first contactor, the coil of third relay reaches the equal electric connection power zero line of alarm.
After the technical scheme is adopted, the beneficial effects of the utility model are that:
because the utility model discloses steady voltage water supply system includes water pump, electric node manometer and opens the control circuit who stops according to the signal control water pump of electric node manometer, and control circuit includes main protection circuit, and it has the start button to establish ties in the main protection circuit, but need press the start button side restart water pump after the water pump trouble. When the water pump breaks down, motor protector can move, thereby the water pump outage stop work, contactor coil also will cut off the power supply among the simultaneous control circuit, after motor protector resets, because start button's existence, contactor coil can't be electrified, then the water pump can not be electrified, so the water pump can not automatic start, only can press start button after the manual work troubleshooting water pump just can restart work again, thereby the effectual water pump that has prevented resets after motor protector automatic start, the phenomenon that the water pump started repeatedly can not appear, thereby effectual protection water pump motor is not burnt out, the life of water pump has been guaranteed.
To sum up, the utility model discloses steady voltage water supply system has solved the technical problem that water pump motor easily burns out among the prior art, the utility model discloses steady voltage water supply system can effectual protection water pump motor not burnt out, has guaranteed the life of water pump.
Drawings
FIG. 1 is an electrical schematic diagram of a prior art regulated water supply;
fig. 2 is an electrical schematic diagram of the voltage-stabilizing water supply system of the present invention.
Detailed Description
The invention is further explained below with reference to the drawings and examples.
All the orientations referred to in the present specification are based on the orientations shown in the drawings, and only represent relative positional relationships, not absolute positional relationships.
As shown in fig. 2, a pressure-stabilizing water supply system comprises a water pump, a pressure tank (not shown in the figure), an electric node pressure gauge (a part shown by a dotted line in the figure) installed on the pressure tank, and an electric control panel for controlling the water pump to start and stop according to a signal of the electric node pressure gauge, wherein a control circuit and a main circuit are arranged in the electric control panel. The control circuit can control the start and stop of the water pump according to the signal of the electric node pressure gauge.
As shown in fig. 2, a motor protector, a first contactor KM0 and a second contactor KM1 are connected in series in the main circuit. The specific implementation mode is as follows: the main circuit comprises a circuit breaker QS electrically connected with a three-phase power supply, the circuit breaker QS is electrically connected with a motor protector, the model of the motor protector is preferably JD-8 in the embodiment, so that the motor protector is replaced by JD-8 in a circuit schematic diagram, the motor protector JD-8 is electrically connected with a main contact of a first contactor KM0, the main contact of a first contactor KM0 is electrically connected with a main contact of a second contactor KM1, and the main contact of the second contactor KM1 is electrically connected with a water pump motor M.
As shown in fig. 2, the control circuit includes a main protection circuit, a pressure control circuit, and an alarm circuit. The main protection circuit, the pressure control circuit and the alarm circuit are connected in parallel, namely the pressure control circuit is connected with the main protection circuit in parallel, and the alarm circuit is connected with the main protection circuit in parallel. The one end homogeneous electricity of main protection circuit, pressure control circuit and warning circuit is connected with switch SA, and switch SA electricity is connected with fuse FU, and fuse FU electricity is connected with power live wire C. The other ends of the main protection circuit, the pressure control circuit and the alarm circuit are all electrically connected with a power supply zero line N.
As shown in fig. 2, the main protection circuit includes a long closed contact of the motor protector JD-8, a long closed contact of the stop button SB2, a long open contact of the start button SB1, and a coil of the first contactor KM0 connected in series, and the first long open auxiliary contact of the first contactor KM0 is connected in parallel with the start button SB1 to form a self-lock. The long closed contact of the motor protector JD-8 is electrically connected with the power switch SA, and the coil of the first contactor KM0 is electrically connected with the power supply zero line N. Because the starting button SB1 is arranged in the main protection circuit, after the water pump is in failure, the long closed contact of the motor protector JD-8 is disconnected, when the coil of the first contactor KM0 loses power, the water pump stops working, the second long-open auxiliary contact of the first contactor KMO is opened, the pressure control circuit is opened, and after the motor protector JD-8 is reset, due to the existence of the starting button SB1, even if the lower pressure limit is reached, neither the coil of the first contactor KM0 nor the coil of the second contactor KM1 is energized, the main contact of the first contactor KM0 and the main contact of the second contactor KM1 were not turned on, therefore, the water pump can not be automatically started, and the water pump can be restarted only by pressing the start button SB1 after the fault is manually cleared, thereby effectively avoiding the frequent start and stop of the water pump, and then the effectual risk that has reduced water pump motor M and has burnt out has guaranteed the life of water pump.
As shown in fig. 2, the pressure control circuit includes a second elongated auxiliary contact of the first contactor KM0, and the second elongated auxiliary contact of the first contactor KM0 is electrically connected with three pressure control branches. The first pressure control branch comprises a first long open contact of a second relay K1 and a coil of a second contactor KM1 which are connected in series. The second pressure control branch comprises an electric node pressure gauge, the upper pressure limit end of the electric node pressure gauge is electrically connected with a coil of the first relay K1, and the lower pressure limit end of the electric node pressure gauge is electrically connected with the third pressure control branch. The third pressure control branch comprises a long closed contact of the first relay K1, a second long open contact of the second relay K2 and a coil of the second relay K2 which are connected in series, and the lower pressure limit end of the electric node pressure gauge is electrically connected between the second long open contact of the second relay K2 and the coil of the second relay K2. The first long open contact of the second relay K2, the common end of the electrical node pressure gauge and the long closed contact of the first relay K1 are all electrically connected with the second long open auxiliary contact of the first contactor KM 0. The coil of the second contactor KM1, the coil of the first relay K1 and the coil of the second relay K2 are all electrically connected to the neutral wire N of the power supply. The second long open auxiliary contact of the first contactor KM0 is electrically connected to the power switch SA.
As shown in fig. 2, when the water pump has no fault, after the start button SB1 is pressed, the coil of the first contactor KM0 is energized, the main contact of the first contactor KM0 is turned on, the second long open auxiliary contact of the first contactor KM0 is closed, when the pressure reaches the lower limit of the pressure of the electric node voltage meter, the coil of the second relay K2 is energized, the first long open contact of the second relay K2 is closed, the coil of the first contactor KM1 is energized, the main contact of the first contactor KM1 is turned on, and the water pump starts to work. When pressure reaches the pressure lower limit of the electric node pressure gauge, the coil of the first relay K1 is electrified, the long closed contact of the first relay K1 is disconnected, the coil of the second relay K2 is electrified, the first long open contact of the second relay K2 is disconnected, the coil of the second contactor KM1 is electrified, and the water pump stops working, so that voltage-stabilizing water supply is realized.
As shown in FIG. 2, the alarm circuit comprises a long closed contact of an alarm release button SB3, and the long closed contact of an alarm release button SB3 is electrically connected with two alarm branches. The first alarm branch comprises a long open contact of the motor protector JD-8 and a coil of the third relay K3 which are connected in series, and the first long open contact of the third relay K3 is connected in parallel with the long open contact of the motor protector JD-8. The second alarm branch comprises a second long open contact of a third relay K3 and an alarm BJQ which is connected in series, and the alarm BJQ is preferably a buzzer in the embodiment, but not limited to a buzzer, and can also be other audible and visual alarms. The long closed contact of the alarm release button SB3 is electrically connected with the power switch SA, and the coil of the third relay K3 and the alarm BJQ are both electrically connected with the power zero line N.
As shown in figure 2, when the water pump breaks down, the long open contact of the motor protector JD-8 is closed, the coil of the third relay K3 is electrified, the first long open contact and the second long open contact of the third relay K3 are both closed, the alarm BJQ is electrified, and an audible and visual alarm is given out, because the first long open contact of the third relay K3 forms a self-lock, even if the motor protector JD-8 automatic reset alarm cannot be automatically released, the alarm can be released after the alarm release button SB3 is manually pressed, so that a worker can find out the water pump fault in time, and the water pump fault can be timely eliminated
To sum up, the utility model discloses steady voltage water supply system is because of having set up start button SB1, even motor protector JD-8 resets, first contactor KM 0's coil also can not have an electric charge, and the contact also can not be closed to the water pump can not automatic start, the effectual risk of avoiding the water pump to burn out because of frequent automatic re-setting starts. Meanwhile, the first contactor KM0 does not participate in frequent start and stop of voltage-stabilized water supply, so that the contacts are guaranteed to be intact and not adhered, the main circuit can be reliably disconnected under the condition that the contacts of the second contactor KM1 are adhered, and the motor is guaranteed not to be burnt. Meanwhile, an alarm circuit is added, the alarm BJQ can be installed in a duty room, and after the alarm is given out, a worker can timely handle the fault and ensure normal water supply.
The present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes without creative labor from the above conception, and all the changes fall within the protection scope of the present invention.
Claims (10)
1. The pressure-stabilizing water supply system comprises a water pump, an electric node pressure gauge and a control circuit for controlling the water pump to start and stop according to a signal of the electric node pressure gauge, and is characterized in that the control circuit comprises a main protection circuit, a start button is connected in series in the main protection circuit, and the water pump can be restarted by pressing the start button after the water pump fails.
2. The regulated water supply system according to claim 1, wherein a motor protector, a first contactor and a second contactor are connected in series in a main circuit of the water pump.
3. The regulated water supply system according to claim 2, wherein said main protection circuit comprises a long closed contact of said motor protector, a long closed contact of a stop button, a long open contact of said start button and a coil of said first contactor connected in series, and a first long open auxiliary contact of said first contactor is connected in parallel with said start button.
4. The regulated water supply system according to claim 3, wherein the motor protector is JD-8.
5. The regulated water supply system according to claim 3, wherein said control circuit further comprises a pressure control circuit connected in parallel with said main protection circuit.
6. The regulated water supply system according to claim 5, wherein the pressure control circuit comprises a second elongated auxiliary contact of the first contactor, the second elongated auxiliary contact of the first contactor being electrically connected with three pressure control branches; the first pressure control branch comprises a first long open contact of a second relay and a coil of the second contactor which are connected in series; the second pressure control branch comprises the electrical node pressure gauge, the upper pressure limit end of the electrical node pressure gauge is electrically connected with a coil of a first relay, and the lower pressure limit end of the electrical node pressure gauge is electrically connected with a third pressure control branch; the third pressure control branch comprises a long closed contact of the first relay, a second long open contact of the second relay and a coil of the second relay which are connected in series, and the lower pressure limit end of the electrical node pressure gauge is electrically connected between the second long open contact of the second relay and the coil of the second relay.
7. The regulated water supply system according to claim 6, wherein said control circuit further comprises an alarm circuit connected in parallel with said main protection circuit.
8. The regulated water supply system according to claim 7, wherein the alarm circuit comprises a long closed contact of an alarm release button, and the long closed contact of the alarm release button is electrically connected with two alarm branches; the first alarm branch comprises a long open contact of the motor protector and a coil of a third relay which are connected in series, and the first long open contact of the third relay is connected with the long open contact of the motor protector in parallel; the second alarm branch comprises a second long open contact of the third relay and an alarm which are connected in series.
9. The regulated water supply system according to claim 8, wherein said alarm is a buzzer.
10. The regulated water supply system according to claim 8, wherein the main protection circuit, the pressure control circuit and the alarm circuit are all electrically connected with a power switch, the power switch is electrically connected with a fuse, and the fuse is electrically connected with a power supply live wire; the coil of second contactor, the coil of first relay, the coil of second relay, the coil of first contactor, the coil of third relay reaches the equal electric connection power zero line of alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020436511.9U CN211898693U (en) | 2020-03-31 | 2020-03-31 | Pressure-stabilizing water supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020436511.9U CN211898693U (en) | 2020-03-31 | 2020-03-31 | Pressure-stabilizing water supply system |
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| Publication Number | Publication Date |
|---|---|
| CN211898693U true CN211898693U (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020436511.9U Active CN211898693U (en) | 2020-03-31 | 2020-03-31 | Pressure-stabilizing water supply system |
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| Country | Link |
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| CN (1) | CN211898693U (en) |
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- 2020-03-31 CN CN202020436511.9U patent/CN211898693U/en active Active
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