CN217036825U - Phase failure and equipment patrol personnel safety protection circuit for secondary water supply pump room sewage discharge facility - Google Patents
Phase failure and equipment patrol personnel safety protection circuit for secondary water supply pump room sewage discharge facility Download PDFInfo
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- CN217036825U CN217036825U CN202123022812.0U CN202123022812U CN217036825U CN 217036825 U CN217036825 U CN 217036825U CN 202123022812 U CN202123022812 U CN 202123022812U CN 217036825 U CN217036825 U CN 217036825U
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Abstract
The utility model discloses a secondary water supply pump room pollution discharge facility default phase and equipment patrol personnel safety protection circuit, which belongs to the technical field of motor default phase protection, and particularly relates to a secondary water supply pump room pollution discharge facility default phase and equipment patrol personnel safety protection circuit. The protection circuit can perform open circuit protection in time when the motor is in phase failure, so that equipment use and personnel safety are ensured.
Description
Technical Field
The utility model relates to the technical field of motor open-phase protection, in particular to a secondary water supply pump room pollution discharge facility open-phase and equipment patrol personnel safety protection circuit.
Background
The secondary water supply is usually arranged on an underground layer, is used and prepared one by one, is daily, and is based on the consideration of safety, the sewage discharge equipment is set to be in an automatic state, only one sewage discharge equipment can be normally started (the other sewage discharge equipment is not started) after the set water level is reached, the accumulated water in the pump room is discharged, when the sewage discharge equipment is in a manual position, only one sewage discharge equipment can be started frequently, but if the secondary water supply equipment causes water leakage or the accumulated water in the pump room is too fast and too much due to large rainfall in a flood season, one sewage discharge equipment cannot discharge the accumulated water as soon as possible, the secondary water supply pump room is accumulated water, when the accumulated water is serious, the secondary water supply equipment is submerged, the secondary water supply equipment is seriously damaged, even all the secondary water supply pump room is submerged, the motor used by the sewage discharge equipment is a three-phase motor, the overload and short-circuit protection is provided, but the phase loss protection is not provided, or the phase loss protection is not responded, or because the running time of the equipment is long, the humidity in the secondary water supply pump room is high, the heat protection is not effective or the response is slow, and the motor is in phase failure once, so that the secondary water supply and sewage discharge setting motor is damaged; the secondary water supply secondary line generally adopts 220V or 380V, a selector switch is usually in an automatic position, in order to ensure that equipment is in a good condition, inspectors need to check the float switch frequently during daily inspection, but the voltage used by the float switch is usually 220V, and once electricity leakage occurs, great harm is brought to the safety of the inspectors; when the secondary water supply tank is cleaned, the cleaning speed of the tank is greatly influenced by the drainage capacity of the sewage pump, and only one of the tanks can reduce the drainage capacity to influence the cleaning efficiency of the secondary water supply tank.
Disclosure of Invention
Aiming at the technical defects, the utility model aims to provide a secondary water supply pump room pollution discharge facility open-phase and equipment patrol personnel safety protection circuit, which can perform open-circuit protection in time when a motor is in open-phase, and ensure equipment use and personnel safety.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a phase failure and equipment patrol personnel safety protection circuit of a secondary water supply pump room sewage disposal facility, which comprises two parallel-connected motor main loops and a phase failure protection control circuit, wherein three-phase electric wiring of the two motor main loops is respectively connected with overload protection thermal relays FR and FR1 and main contacts KM and KM1 of an alternating current contactor, electromagnetic coils KM, KA, KM1 and KA1 of the alternating current contactor and an intermediate relay and auxiliary contacts thereof are connected to form two parallel-connected manual control circuits, two ends of the manual control circuits are connected with the three-phase electric wiring of a motor through a power-up circuit, the safety protection circuit is characterized in that relay electromagnetic coils KA2 and KA3 are respectively connected with the contacts of two float switches, the automatic control circuit is formed by connecting the relay electromagnetic coils KA2 and KA3 between the three-phase electric wiring of a load end of the motor after the transformer is transformed, one end of the automatic control circuit is connected with L1 in the three-phase electric wiring of the motor through the power-up circuit, the other end is connected with a zero line, and the automatic control circuit is connected with the manual control circuit in parallel.
Preferably, a selection switch is arranged at the connection part of the automatic control circuit and the manual control circuit.
Preferably, the contacts of the two float switches are a high water level contact and a low water level contact respectively.
Preferably, the transformer transforms 220V or 360V voltage into 24V voltage.
The utility model has the beneficial effects that: the safety protection circuit utilizes the existing equipment, does not need to add expensive auxiliary equipment, and solves the potential safety hazard in daily work; by utilizing the special functions of different devices and adopting the interlocking linkage between the relays, any phase of the power supply, including a zero line, has a problem, can reliably act, and quickly cut off the power supply of a primary circuit and a secondary circuit, thereby protecting the safety of the devices and avoiding the influence on the normal operation of a secondary water supply pump room caused by the damage of the devices; the common 220V or 380V alternating current safety voltage is adopted, so that the cost is low, the personal safety of patrolmen can be effectively guaranteed, and the patrolling efficiency of secondary water supply equipment is improved; the sewage draining operation is performed manually or automatically from one use to the other in daily life to the emergency, the two devices can be started simultaneously, and accumulated water in the sewage draining well can be drained in a short time; the cleaning efficiency of the secondary water supply tank can be effectively improved, and the cleaning time is shortened.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a circuit diagram of a phase failure and equipment patrol personnel safety protection circuit of a secondary water supply pump room sewage discharge facility provided by the utility model.
Description of the reference numerals: 1-selector switch, 2-float switch, 3-transformer, 4-contact.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example 1, as shown in fig. 1, the phase loss and equipment patrol personnel safety protection circuit of the sewage discharge facility of the secondary water supply pump house comprises two parallel-connected motor main circuits and a phase loss protection control circuit, wherein three-phase electric connection wires of the two motor main circuits are respectively connected with overload protection thermal relays FR and FR1 and main contacts KM and KM1 of an alternating current contactor, electromagnetic coils KM, KA, KM1 and KA1 of the alternating current contactor and an intermediate relay and auxiliary contacts thereof are connected to form two parallel-connected manual control circuits, two ends of the manual control circuits are connected with three-phase electric connection wires of a motor through a power lead circuit, the two ends of the manual control circuits are characterized in that relay electromagnetic coils KA2 and KA3 are respectively connected with high and low water level contacts 4 on two float switches 2, the high and low water level contacts 4 are closed when reaching a set water level and are connected between the three-phase electric connection wires of a motor load end after being transformed by a transformer 3, one end of the automatic control circuit is connected with L1 in the three-phase electric connection wire of the motor through a power leading circuit, the other end of the automatic control circuit is connected with a zero line, and the automatic control circuit is connected with the manual control circuit in parallel.
Further, a selection switch 1 is arranged at the joint of the automatic control circuit and the manual control circuit.
Further, the transformer 3 converts 220V or 360V voltage into 24V voltage.
When L1 is out of phase, the line is not working;
when L2 is out of phase, the KM and KM1 secondary circuits are powered off, the alternating current contactor is disconnected, and the motor stops running;
similarly, when the L3 is in a phase failure, the intermediate relays KA and KA1 lose power, normally-open points KA and KA1 in a secondary line are switched from closed to open, the alternating-current contactors KA and KA1 lose power, and the motor stops running;
when the selector switch 1 is arranged at an automatic position and water is lower than set high and low water levels, the high and low water level contacts 4 corresponding to the float switch 2 are disconnected, the KA2 and the KA3 are disconnected in power loss, the secondary loop is powered off, the KM and the KM1 are disconnected, and the motor stops running.
The safety protection circuit of the utility model utilizes the existing equipment, does not need to add expensive accessory equipment, and solves the potential safety hazard in daily work; by utilizing the special functions of different devices and adopting the interlocking linkage between the relays, any phase of a power supply, including a zero line, has a problem, can reliably act, and quickly cut off the power supply of a primary circuit and a secondary circuit, thereby protecting the safety of the devices and avoiding the influence on the normal operation of a secondary water supply pump room caused by the damage of the devices; the common 220V or 380V alternating current safety voltage is adopted, so that the cost is low, the personal safety of patrolmen can be effectively guaranteed, and the patrolling efficiency of secondary water supply equipment is improved; the drainage operation is carried out manually or automatically from one use to the emergency, the two devices can be started simultaneously, and accumulated water in the drainage well can be drained in a short time; the cleaning efficiency of the secondary water supply tank can be effectively improved, and the cleaning time is shortened.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (4)
1. A phase failure and equipment patrol personnel safety protection circuit of a secondary water supply pump room sewage facility comprises two parallel-connected motor main loops and a phase failure protection control circuit, wherein three-phase electric connection wires of the two motor main loops are respectively connected with overload protection thermal relays FR and FR1 and main contacts KM and KM1 of an alternating current contactor, electromagnetic coils KM, KA, KM1 and KA1 of the alternating current contactor and an intermediate relay are connected to form two parallel-connected manual control circuits, two ends of the manual control circuits are connected with three-phase electric connection wires of a motor through a power leading circuit, the safety protection circuit is characterized in that relay electromagnetic coils KA2 and KA3 are respectively connected with the contacts of two float switches, the two float switches are connected between the three-phase electric connection wires of a motor load end after voltage transformation through a transformer to form an automatic control circuit, one end of the automatic control circuit is connected with L1 in the three-phase electric connection wires of the motor through the power leading circuit, the other end is connected with a zero line, and the automatic control circuit is connected with the manual control circuit in parallel.
2. The phase failure and equipment patrol personnel safety protection circuit of the secondary water supply pump house sewage discharge facility according to claim 1, characterized in that a selection switch is arranged at the connection part of the automatic control circuit and the manual control circuit.
3. The phase-defect and equipment patrol personnel safety protection circuit of the sewage disposal facility of the secondary water supply pump house according to claim 1, characterized in that the contacts of the two float switches are a high water level contact and a low water level contact respectively.
4. The phase loss and equipment patrol personnel safety protection circuit of a sewage facility of a secondary water supply pump house according to claim 1, wherein the transformer converts 220V or 360V voltage into 24V voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123022812.0U CN217036825U (en) | 2021-12-03 | 2021-12-03 | Phase failure and equipment patrol personnel safety protection circuit for secondary water supply pump room sewage discharge facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123022812.0U CN217036825U (en) | 2021-12-03 | 2021-12-03 | Phase failure and equipment patrol personnel safety protection circuit for secondary water supply pump room sewage discharge facility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217036825U true CN217036825U (en) | 2022-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123022812.0U Active CN217036825U (en) | 2021-12-03 | 2021-12-03 | Phase failure and equipment patrol personnel safety protection circuit for secondary water supply pump room sewage discharge facility |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217036825U (en) |
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2021
- 2021-12-03 CN CN202123022812.0U patent/CN217036825U/en active Active
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