CN202954953U - Submersible pump control circuit with automatic protection function - Google Patents
Submersible pump control circuit with automatic protection function Download PDFInfo
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- CN202954953U CN202954953U CN 201220707277 CN201220707277U CN202954953U CN 202954953 U CN202954953 U CN 202954953U CN 201220707277 CN201220707277 CN 201220707277 CN 201220707277 U CN201220707277 U CN 201220707277U CN 202954953 U CN202954953 U CN 202954953U
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- Prior art keywords
- submersible pump
- circuit
- pump
- power supply
- control circuit
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Abstract
The utility model discloses a submersible pump control circuit with an automatic protection function. The submersible pump control circuit comprises a power supply, a signal acquiring module, a protection circuit, a display screen, a data storing unit, a submersible pump circuit and a voltage comparer, wherein the display screen and the data storing unit are connected with the submersible pump circuit; the power supply, the submersible pump circuit and the protection circuit are sequentially serially connected; the signal acquiring module is connected to the protection circuit and is used for transmitting the acquired signal to the protection circuit, the protection circuit is connected with the voltage comparer, the voltage comparer is respectively connected with the power supply and the signal acquiring module; and the signal acquiring module comprises a current sensor, a voltage sensor, a temperature sensor and a humidity sensor. The submersible pump control circuit is high in automation level, has functions of self identification and automatic control, and can well avoid the damage caused to a submersible pump by circuit overcurrent or short current reasons and dangers caused to the personnel.
Description
Technical field
The utility model relates to the submersible pump field, relates in particular to a kind of control circuit of the submersible pump with automatic protection functions.
Background technique
Submersible pump is the visual plant of deep-well water lift, during work, whole unit need to be pulled the plug, and underground water is extracted to earth's surface, for domestic water, mine speedily carry out rescue work, cooling, the field irrigation of industry, seawater promote, steamer is adjusted and carried; The hot water submersible pump, for hot spring bathing, also, applicable to extract underground water from deep-well, also can be used for the water lift engineerings such as river, reservoir, water channel.Motor, water pump, the operation that pulls the plug, it all can use without specific (special) requirements (that is: steel tube well, grey pipe well, Tu Jing etc.) lifting pipe, and its working service is convenient and simple in addition, and floor space is little, do not need to build pump house.Whether the service condition of submersible pump is suitable and management is proper and direct relation is arranged working life.
Submersible pump generally is comprised of the pump housing, lifting pipe, pump seat, submersible motor and starting guard equipment, is a kind of machinery of the conveying liquid united two into one by pump and motor, and it is simple in structure, easy to use.According to the relative position of Pump and Electromotor, submersible pump can be divided into pump formula and down-pump type again.In the above, below, this structure has reduced the radial dimension of pump to motor to upper pump formula submersible pump pump greatly, so multiplex in Submersible Pump and small-scale workshops Submerged Motor Pumps.In the above, below, it is divided into again two kinds of built-in type and external mounteds to pump to the down-pump type motor for submerged pump.Pump is as a kind of universal machine, and it is of many uses.Various pumps, appearred in the development differentiation along with pump.In general, according to drainage principle, water pump can be divided into: one, impeller pump is as centrifugal pump, mixed flow pump, axial-flow pump etc., torque flow pump; Two, displacement pump is as plunger pump, gear pump, Luo bar pump, vane pump etc.; Three, other types are as Jet injector, hydraulic ram etc.Wherein vane pump can be divided into according to structural type (position of axle): horizontal and vertical; According to working position, can be divided into: submersible pump and ground pump.Slag stock pump, slurry pump, sand (sand) pump and sand-discharging submerged pump are all to name according to the function and usage of water pump.
Submersible pump, in actual practical process, is subject to the impact of the factors such as working environment, load, operating time, occurs in motor cavity soak, leaks, over-current and-load, phase shortage, disconnected equal fault, the normal operation and the personal safety as well as the property safety that seriously jeopardize submersible pump.
The model utility content
In order to solve the problems of the technologies described above, the utility model provides a kind of automatization level high, the safe and reliable control circuit of the submersible pump with automatic protection functions.
The technological scheme that the utility model addresses the above problem is: a kind of control circuit of the submersible pump with automatic protection functions; it comprises power supply, signal acquisition module, protective circuit, submersible pump circuit and voltage comparator; described power supply, submersible pump circuit, protective circuit are connected in series successively; signal acquisition module is connected to protective circuit; the signal collected is transported to protective circuit; protective circuit is connected with voltage comparator, and described voltage comparator connects respectively power supply and signal acquisition module.
Above-mentioned a kind of control circuit of the submersible pump with automatic protection functions also comprises display screen and data storage cell, and described display screen, data storage cell are connected with the submersible pump circuit.
Above-mentioned signal acquisition module comprises current sensor, voltage transducer, temperature transducer, humidity transducer.
Compare traditional submersible pump automatic protective system, this control circuit has the following advantages:
1, the utility model automatization level is high, is swift in response in the course of the work and has memory, realizes that the mode of self-protection has certain intelligent level; This system is connected and is furnished with printing/communication interface with PC simultaneously, can preserve or print fault recording;
2, the utlity model has Urine scent, automatic control function, can well avoid the destruction of submersible pump being brought because of circuit overcurrent or short circuit reason and the danger that personnel are brought.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is that the utility model is protected the control circuit schematic diagram automatically.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
Be illustrated in figure 1 structural representation of the present utility model, it comprises power supply, signal acquisition module, protective circuit, display screen, data storage cell, submersible pump circuit and voltage comparator, described signal acquisition module comprises current sensor, voltage transducer, temperature transducer, humidity transducer, signal acquisition module is connected to protective circuit, the electric current collected, voltage, temperature, the signals such as humidity are transported to protective circuit, protective circuit is connected with voltage comparator, described voltage comparator connects respectively power supply and signal acquisition module, described power supply, the submersible pump circuit, protective circuit is connected in series successively, described display screen, data storage cell is connected with the submersible pump circuit, within motor cavity occurring, soak, leak, over-current and-load, phase shortage, the disconnected fault that equates, while seriously jeopardizing the normal operation of submersible pump and personal safety as well as the property safety, this circuit carries out comprehensive monitoring to the electric current of system, and make corresponding judgement.
The utlity model has following functions: electric pump immersion controlling alarm, electric pump motor winding temperature alarm are controlled, the electric pump motor insulation, moistureproof controlling alarm: motor for submerged pump is in actual motion, likely when quitting work, gradually the moisture absorption, hygroscopic effect will be reflected in the slow decreasing of electrical machine insulation resistance, and then cause the damage of motor.For the insulating properties of protection submersible electric pump motor, improve to use serviceability, this protective gear is by detecting the electric pump signaling line, when humidity reaches 100%, during dew point; Stopping signal detected by signal terminal, time delay a period of time, this device dehumidifying heating is often opened node and is connected, and removes to drive the dehumidifying heating equipment.Automatically stop heating when temperature reaches 70%, if motor one starts, this control system quits work immediately.When heating, on panel, the dehumidifying tutorial light constantly glimmers, and this function can only be carried out in termination of pumping, otherwise will produce serious short circuit accident.Immersion controlling alarm in motor cavity: while in the motor for submerged pump chamber, water leakage fault occurring, jeopardize motor safety, when testing pump signaling line resistance is less than, this plant failure is exported normally closed node and is disconnected, the normal opened contact closure, on panel, the motor cavity tutorial light that leaks starts the early warning of glistening from the proximity sensing value, until fix a breakdown.During early warning, fault output is failure to actuate.Bearing running hot controlling alarm: when this Underwater pump bearing breaks down; temperature increases suddenly; when temperature surpasses 90 ℃; through this protective gear testing pump signaling line when resistance is greater than 1.5K; this plant failure is exported normally closed node and is disconnected; often open the node closure, panel bearing running hot tutorial light flashing light alarm from approaching the protection value, until fix a breakdown.During early warning, fault output is failure to actuate.The pump overload-alarm is controlled: when this pump motor, because of over-current and-load, when phase shortage, open phase fault, hot servo is done, and this plant failure is exported normally closed node and disconnected, and often opens the node closure, and the pump overload light indication of glimmering from approaching the protection value on panel, until fix a breakdown.During early warning, fault output is failure to actuate.Immersion controlling alarm in the terminal box chamber: while in motor for submerged pump terminal box chamber, water leakage fault occurring, jeopardize motor safety, when pump water leakage line is less than, this plant failure is exported normally closed node and is disconnected.Be used as to cut off the electricity supply.The normal opened contact closure, on panel, the terminal box tutorial light that leaks starts flash of light indication from the proximity sensing value, until fix a breakdown.During early warning, fault output is failure to actuate.
Figure 2 shows that submersible pump protective circuit schematic diagram, the over-current protection circuit that it utilizes voltage comparator and relay to realize, in figure, voltage comparator LM393 and peripheral cell form a trigger with memory capability.As load current I
L<I
LmaxThe time, the V of voltage comparator LM393
N=-V
R=-I
LR>V
P(V
P<0V, its size is by R
4, R
5P-V
CCDividing potential drop decides), its output voltage V
OFor low level, the Q cut-off, relay J is failure to actuate, therefore stabilized power supply maintains normal output.When overcurrent or short circuit, i.e. load current I
LI
Lmax, the VN=-VR=of voltage comparator-I
LR<V
P, its output voltage V
OFor high level, Q saturation conduction, relay J action and cut off load R
LThereby, reach the purpose of overcurrent protection; Sound light alarming circuit work simultaneously; After the relay J action, due to the output voltage V of stabilized power supply
LPass through R
L, R
3Make V
P0 (when power supply enters guard mode, I
L=0, V
N=-V
R=-I
LR=0V), therefore the output voltage V of voltage comparator LM393
ORemain high level, the Q saturation conduction, relay J maintains action and is locked in the overcurrent protection state.As long as this cut-off type over-current protection circuit can automatically terminate the overcurrent protection state, by load R
LDisconnect, V
P<0V, V
N=0V, the output voltage V of voltage comparator
OBecome low level, the Q cut-off, relay J discharges, and D.C. regulated power supply can recover normal output again.The overcurrent value I of protective circuit
Lmax=V
P/ R, therefore, as long as R
4Or R
5Be replaced by adjustable resistance, can conveniently regulate overcurrent value I
LmaxSize.R in Fig. 4
2, C
1Effect be to prevent the momentary load current pulse and cause mistake protection; D
1, C
2Play the certain time-delay effect, the assurance relay J is reliably switched.
In sum, this over-current protection circuit has following 3 characteristics: (1), when load overcurrent or short circuit, power supply can promptly enter guard mode.(2), after entering guard mode, the load power consumption of power supply is the smaller the better, is preferably zero-power; The power consumption of protective circuit itself is very little also.(3) the Gai Bao road has from removing function, and after entering guard mode, when load does not have overcurrent or short circuit, power supply can recover normal output automatically.This circuit can effectively be protected power circuit; and can thoroughly eliminate and produce the phenomenon that load current is very large because of overcurrent; when power supply overcurrent or short circuit; employing has the voltage comparator of memory function; protective circuit is triggered and enters guard mode; and power output end is thoroughly disconnected, stop the accident produced because of overcurrent in the submersible pump working procedure, thereby reached the purpose of safe operation.
Claims (3)
1. the control circuit of the submersible pump with automatic protection functions; it is characterized in that: comprise power supply, signal acquisition module, protective circuit, submersible pump circuit and voltage comparator; described power supply, submersible pump circuit, protective circuit are connected in series successively; signal acquisition module is connected to protective circuit; the signal collected is transported to protective circuit; protective circuit is connected with voltage comparator, and described voltage comparator connects respectively power supply and signal acquisition module.
2. a kind of control circuit of the submersible pump with automatic protection functions according to claim 1, it is characterized in that: also comprise display screen and data storage cell, described display screen, data storage cell are connected with the submersible pump circuit.
3. a kind of control circuit of the submersible pump with automatic protection functions according to claim 1, it is characterized in that: described signal acquisition module comprises current sensor, voltage transducer, temperature transducer, humidity transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220707277 CN202954953U (en) | 2012-12-20 | 2012-12-20 | Submersible pump control circuit with automatic protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220707277 CN202954953U (en) | 2012-12-20 | 2012-12-20 | Submersible pump control circuit with automatic protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202954953U true CN202954953U (en) | 2013-05-29 |
Family
ID=48460529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220707277 Expired - Lifetime CN202954953U (en) | 2012-12-20 | 2012-12-20 | Submersible pump control circuit with automatic protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202954953U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104765297A (en) * | 2015-03-31 | 2015-07-08 | 梁伟 | Intelligent agricultural system based on thermal infrared imager |
| CN105545720A (en) * | 2016-01-28 | 2016-05-04 | 天津仪控科技有限公司 | Detector for monitoring plunger pump packing leakage in real time |
-
2012
- 2012-12-20 CN CN 201220707277 patent/CN202954953U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104765297A (en) * | 2015-03-31 | 2015-07-08 | 梁伟 | Intelligent agricultural system based on thermal infrared imager |
| CN105545720A (en) * | 2016-01-28 | 2016-05-04 | 天津仪控科技有限公司 | Detector for monitoring plunger pump packing leakage in real time |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130529 |
|
| CX01 | Expiry of patent term |