CN218093484U - Constant-pressure water supply variable-frequency fault automatic switching control circuit - Google Patents
Constant-pressure water supply variable-frequency fault automatic switching control circuit Download PDFInfo
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- CN218093484U CN218093484U CN202222460585.8U CN202222460585U CN218093484U CN 218093484 U CN218093484 U CN 218093484U CN 202222460585 U CN202222460585 U CN 202222460585U CN 218093484 U CN218093484 U CN 218093484U
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Abstract
The utility model relates to a constant voltage supplies water frequency conversion trouble automatic switch-over control circuit, include: the frequency conversion main control loop comprises a first control contactor, a frequency converter and an incoming line breaker which are connected in sequence; the power frequency control loop comprises a thermal relay and a second control contactor which are sequentially connected; the constant-pressure water supply controller is connected with the frequency converter through a control switch; and the relay control module comprises a time relay and a switching relay which are sequentially connected. When the frequency converter breaks down, the constant-pressure water supply controller receives a fault signal, the switching relay is controlled to be closed, then the time relay acts to control the second control contactor to be closed, the first control contactor is disconnected at the moment, the power frequency control loop works, the deep-well pump continues to work according to the preset working frequency, the automatic switching of the working modes is achieved, and therefore the deep-well pump can be enabled not to be stopped when the frequency converter breaks down, and the working efficiency is improved.
Description
Technical Field
The utility model relates to an automatic control circuit technical field especially relates to a constant voltage supplies water frequency conversion trouble automatic switch-over control circuit.
Background
The deep well pump is a pump which is immersed in an underground water well to pump and convey water, and is widely applied to the fields of farmland drainage and irrigation, industrial and mining enterprises, urban water supply and drainage, sewage treatment and the like. Deep-well pump generally carries out centralized control by the switch board, adopts frequency conversion control's mode usually, nevertheless because deep-well pump usually needs long-time continuous operation, the long-time operation of converter has broken down and has caused the shut down, because the water level can fall back after the deep-well pump shuts down, need will be located the water of depths again and rise to ground when restarting, need spend certain time just can resume normal work, influence work efficiency.
SUMMERY OF THE UTILITY MODEL
In view of the above shortcomings in the prior art, an object of the present invention is to provide a constant-pressure water supply frequency conversion fault automatic switching control circuit, which has the advantages of realizing automatic switching control mode and improving work efficiency.
To achieve the above and other related objects, the present invention provides the following technical solutions:
a constant-pressure water supply variable-frequency fault automatic switching control circuit comprises:
the system comprises a frequency conversion main control loop, a control circuit and a control module, wherein one end of the frequency conversion main control loop is connected to a deep well pump, and the other end of the frequency conversion main control loop is connected to a power circuit;
one end of the power frequency control loop is connected between the deep well pump and the first control contactor, the other end of the power frequency control loop is connected between the frequency converter and the incoming line breaker, and the power frequency control loop comprises a thermal relay and a second control contactor which are sequentially connected;
the constant-pressure water supply controller is connected with the frequency converter, and a control switch is connected between the constant-pressure water supply controller and the frequency converter;
connect in constant voltage water supply controller with relay control module between the converter, relay control module is worked as including the time relay and the switching relay that connect gradually when the converter breaks down, constant voltage water supply controller is responded to fault signal control switching relay is closed, time relay respond to switching relay closed action is in order to control second control contactor is closed.
According to the technical scheme, the down-conversion main control loop works under a normal condition, the first control contactor is closed, the frequency converter controls the deep-well pump to work in a variable frequency mode, and the constant-pressure water supply controller can set corresponding inlet wire frequency to control the frequency converter to perform constant-pressure water supply control; when the frequency converter breaks down, the constant-pressure water supply controller receives a fault signal, the switching relay is controlled to be closed, then the time relay acts to control the second control contactor to be closed, the first control contactor is disconnected at the moment, the power frequency control loop works, the deep-well pump continues to work according to the preset working frequency, and the working mode is automatically switched, so that the deep-well pump can not be stopped when the frequency converter breaks down, the continuity of the working of equipment is guaranteed, and the working efficiency is improved.
As a preferred scheme of the utility model, time relay is connected with frequency conversion fault indicator, frequency conversion fault indicator responds to the time relay action is opened.
According to the technical scheme, the frequency conversion fault indicator lamp is used for alarming and prompting when the frequency converter breaks down.
As a preferred scheme of the utility model, constant voltage water supply controller with still be connected with frequency conversion operation control relay between the converter, the converter still is connected with frequency conversion operation pilot lamp and frequency conversion stop indicator, frequency conversion operation pilot lamp with frequency conversion stop indicator connects each other parallelly connected and interlocking.
According to the technical scheme, the running state of the frequency converter is indicated through the frequency conversion running indicator lamp and the frequency conversion stop indicator lamp, and the frequency conversion running indicator lamp and the frequency conversion stop indicator lamp are connected in an interlocking mode, so that the frequency conversion running indicator lamp and the frequency conversion stop indicator lamp cannot work simultaneously.
As a preferred scheme of the utility model, second control contactor still is connected with power frequency operation pilot lamp and power frequency stop indicator, power frequency operation pilot lamp with power frequency stop indicator connects in parallel and the interlocking each other.
Realize above-mentioned technical scheme, through power frequency operation pilot lamp and power frequency stop indicator lamp instruction power frequency operating state, and because power frequency operation pilot lamp and power frequency stop indicator lamp interlocking connection consequently can not appear the condition of both simultaneous workings.
As a preferred scheme of the utility model, constant voltage water supply controller still is connected with the liquid level control relay, the liquid level control relay is connected with the liquid level detection switch, the liquid level detection switch sets up in the cistern.
According to the technical scheme, the water level depth in the water storage tank is detected through the liquid level detection switch, and the deep well pump is controlled to start and stop according to the water level depth through the liquid level control relay.
As a preferred scheme of the utility model, frequency conversion master control return circuit still is connected with current transformer, power supply line is connected with the voltmeter.
By the technical scheme, the current value and the voltage value can be detected in real time.
As described above, the utility model discloses following beneficial effect has:
the embodiment of the utility model provides a constant voltage water supply frequency conversion trouble automatic switch-over control circuit, the frequency conversion master control loop work under the normal condition, the first control contactor is closed, by the frequency converter control deep-well pump frequency conversion work, the constant voltage water supply controller can set for corresponding inlet wire frequency control converter and carry out the constant voltage water supply control; when the frequency converter breaks down, when the constant-voltage water supply controller receives a fault signal, the switching relay is controlled to be closed, then the time relay acts to control the second control contactor to be closed, the first control contactor is disconnected at the moment, the power frequency control loop works, the deep-well pump continues to work according to the preset working frequency, and the automatic switching of the working modes is realized, so that the deep-well pump can not be stopped when the frequency converter breaks down, the continuity of the working of equipment is ensured, and the working efficiency is improved.
Drawings
Fig. 1 shows a schematic circuit diagram of the variable frequency control loop and the power frequency control loop in the embodiment of the present invention.
Fig. 2 shows a control schematic diagram of the frequency converter according to the embodiment of the present invention.
Fig. 3 is a control schematic diagram of a constant pressure water supply controller according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a control circuit according to an embodiment of the present invention.
The corresponding part names indicated by the numbers and letters in the drawings:
1. a variable frequency control loop; x-KM1 and a first control contactor; 11. a frequency converter; 12. an incoming line breaker; 13. a current transformer; 2. a power frequency control loop; x-KM2, a thermal relay; x-FR2, a second control contactor; 3. a constant pressure water supply controller; XLP, control switch; 4. a relay control module; x-KT1, time relay; x-KA3, a switching relay; 5. a deep well pump; 6. a power supply line; 61. a voltmeter; x-Hy1 and a variable frequency fault indicator lamp; x-KA2, a variable frequency operation control relay; x-Hg1, and a variable frequency operation indicator lamp; x-Hr1 and a variable frequency stop indicator lamp; x-Hg2, power frequency operation indicator lamp; x-Hr2 and a power frequency stop indicator lamp; x-KA5, a liquid level control relay; 7. a liquid level detection switch.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Please refer to fig. 1 to 4. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
Referring to fig. 1 to 4, the present invention provides a constant-pressure water supply variable-frequency fault automatic switching control circuit, which includes: the system comprises a frequency conversion main control loop, a deep well pump 5, a power line 6, a first control contactor x-KM1, a frequency converter 11 and an incoming line breaker 12, wherein one end of the frequency conversion main control loop is connected with the deep well pump 5, and the other end of the frequency conversion main control loop is connected with the power line 6; one end of the power frequency control loop 2 is connected between the deep well pump 5 and the first control contactor x-KM1, the other end of the power frequency control loop 2 is connected between the frequency converter 11 and the incoming line breaker 12, and the power frequency control loop 2 comprises a thermal relay x-KM2 and a second control contactor x-FR2 which are sequentially connected; the constant-pressure water supply controller 3 is connected with the frequency converter 11, and a control switch XLP is connected between the constant-pressure water supply controller 3 and the frequency converter 11; the relay control module 4 is connected between the constant-voltage water supply controller 3 and the frequency converter 11, the relay control module 4 comprises a time relay x-KT1 and a switching relay x-KA3 which are sequentially connected, when the frequency converter 11 breaks down, the constant-voltage water supply controller 3 responds to a fault signal to control the switching relay x-KA3 to be closed, and the time relay x-KT1 responds to the switching relay x-KA3 to be closed to control the second control contactor x-FR2 to be closed.
The time relay x-KT1 is further connected with a variable frequency fault indicator lamp x-Hy1, the variable frequency fault indicator lamp x-Hy1 is started in response to the action of the time relay x-KT1, and alarm prompt is carried out through the variable frequency fault indicator lamp x-Hy1 when the frequency converter 11 breaks down.
Meanwhile, a variable frequency operation control relay x-KA2 is connected between the constant voltage water supply controller 3 and the frequency converter 11, the frequency converter 11 is also connected with a variable frequency operation indicator lamp x-Hg1 and a variable frequency stop indicator lamp x-Hr1, and the variable frequency operation indicator lamp x-Hg1 and the variable frequency stop indicator lamp x-Hr1 are mutually connected in parallel and are in interlocking connection; the running state of the frequency converter 11 is indicated by the frequency conversion running indicator lamp x-Hg1 and the frequency conversion stop indicator lamp x-Hr1, and the frequency conversion running indicator lamp x-Hg1 and the frequency conversion stop indicator lamp x-Hr1 are connected in an interlocking manner, so that the frequency conversion running indicator lamp x-Hg1 and the frequency conversion stop indicator lamp x-Hr1 cannot work simultaneously.
Correspondingly, the second control contactor x-FR2 is also connected with a power frequency operation indicator lamp x-Hg2 and a power frequency stop indicator lamp x-Hr2, and the power frequency operation indicator lamp x-Hg2 and the power frequency stop indicator lamp x-Hr2 are mutually connected in parallel and are in interlocking connection; the power frequency operation indicator lamp x-Hg2 and the power frequency stop indicator lamp x-Hr2 are used for indicating the operation state of power frequency operation, and the power frequency operation indicator lamp x-Hg2 and the power frequency stop indicator lamp x-Hr2 are connected in an interlocking manner, so that the two lamps do not work simultaneously.
Further, the constant-pressure water supply controller 3 is further connected with a liquid level control relay x-KA5, the liquid level control relay x-KA5 is connected with a liquid level detection switch 7, the liquid level detection switch 7 is arranged in the water storage tank, the water level depth in the water storage tank is detected through the liquid level detection switch 7, the liquid level control relay x-KA5 controls the deep well pump 5 to start and stop according to the water level depth, in the embodiment, the liquid level detection switch 7 adopts a float switch, and the deep well pump 5 starts to work when the liquid level is higher than 5m and stops working when the liquid level is lower than 2 m.
The frequency conversion main control loop is also connected with a current transformer 13, and the power circuit 6 is connected with a voltmeter 61, so that the current value and the voltage value can be detected in real time.
Under normal conditions, a down-conversion main control loop works, a first control contactor x-KM1 is closed, a deep-well pump 5 is controlled by a frequency converter 11 to work in a frequency conversion mode, a constant-pressure water supply controller 3 can set corresponding incoming line frequency to control the frequency converter 11 to perform constant-pressure water supply control, and a variable-frequency operation indicator lamp x-Hg1 and a power frequency stop indicator lamp x-Hr2 are turned on to indicate at the same time; when the frequency converter 11 breaks down, the constant-pressure water supply controller 3 receives a fault signal and controls the switching relay x-KA3 to be closed, the time relay x-KT1 acts to control the second control contactor x-FR2 to be closed, at the moment, the first control contactor x-KM1 is disconnected, the power frequency control loop 2 works, the deep-well pump 5 continues to work according to the preset working frequency, and automatic switching of the working modes is achieved, so that the deep-well pump 5 can not stop when the frequency converter 11 breaks down, the working continuity of equipment is guaranteed, the working efficiency is improved, and meanwhile, the frequency conversion fault indicator lamp x-Hy1, the frequency conversion stop indicator lamp x-Hr1 and the power frequency operation indicator lamp x-Hg2 are started to indicate.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (6)
1. The utility model provides a constant voltage supplies water frequency conversion trouble automatic switch-over control circuit which characterized in that includes:
the system comprises a frequency conversion main control loop, a control circuit and a control module, wherein one end of the frequency conversion main control loop is connected to a deep well pump, and the other end of the frequency conversion main control loop is connected to a power circuit;
one end of the power frequency control loop is connected between the deep well pump and the first control contactor, the other end of the power frequency control loop is connected between the frequency converter and the incoming line breaker, and the power frequency control loop comprises a thermal relay and a second control contactor which are sequentially connected;
the constant-pressure water supply controller is connected with the frequency converter, and a control switch is connected between the constant-pressure water supply controller and the frequency converter;
connect in constant voltage water supply controller with relay control module between the converter, relay control module works as when the converter breaks down including time relay and the switching relay that connects gradually, constant voltage water supply controller is responsive to fault signal control switching relay is closed, time relay responds to switching relay closed action is in order to control second control contactor is closed.
2. The constant-pressure water supply variable-frequency fault automatic switching control circuit as claimed in claim 1, wherein a variable-frequency fault indicator lamp is connected to the time relay, and the variable-frequency fault indicator lamp is turned on in response to the action of the time relay.
3. The constant-pressure water supply variable-frequency fault automatic switching control circuit according to claim 1, characterized in that a variable-frequency operation control relay is further connected between the constant-pressure water supply controller and the frequency converter, the frequency converter is further connected with a variable-frequency operation indicator lamp and a variable-frequency stop indicator lamp, and the variable-frequency operation indicator lamp and the variable-frequency stop indicator lamp are mutually connected in parallel and are in interlocking connection.
4. The constant-pressure water supply variable-frequency fault automatic switching control circuit as claimed in claim 1, wherein the second control contactor is further connected with a power frequency operation indicator lamp and a power frequency stop indicator lamp, and the power frequency operation indicator lamp and the power frequency stop indicator lamp are mutually connected in parallel and in interlocking connection.
5. The constant-pressure water supply variable-frequency fault automatic switching control circuit according to claim 1, wherein the constant-pressure water supply controller is further connected with a liquid level control relay, the liquid level control relay is connected with a liquid level detection switch, and the liquid level detection switch is arranged in a water storage tank.
6. The constant-voltage water supply variable-frequency fault automatic switching control circuit according to claim 1, wherein a current transformer is further connected to the variable-frequency main control loop, and a voltmeter is connected to the power line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222460585.8U CN218093484U (en) | 2022-09-14 | 2022-09-14 | Constant-pressure water supply variable-frequency fault automatic switching control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222460585.8U CN218093484U (en) | 2022-09-14 | 2022-09-14 | Constant-pressure water supply variable-frequency fault automatic switching control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN218093484U true CN218093484U (en) | 2022-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222460585.8U Active CN218093484U (en) | 2022-09-14 | 2022-09-14 | Constant-pressure water supply variable-frequency fault automatic switching control circuit |
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| Country | Link |
|---|---|
| CN (1) | CN218093484U (en) |
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- 2022-09-14 CN CN202222460585.8U patent/CN218093484U/en active Active
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