CN2569406Y

CN2569406Y - Built-in intelligent start protector for submersible pump

Info

Publication number: CN2569406Y
Application number: CN 02276991
Authority: CN
Inventors: 彭勇; 浣军; 徐骏前
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-31
Filing date: 2002-07-31
Publication date: 2003-08-27
Anticipated expiration: 2012-07-31

Abstract

The utility model relates to a built-in intelligent starting protection device for a submersible pump, which is formed by the connection of a central processing circuit 1, a short circuit overcurrent detection circuit 2, a phase detection circuit 3, a storage circuit 4, a network interface 5, a sensor interface 6, an output circuit 7, and a power supply input circuit 8. Circuit components and circuit devices are arranged on a printing board, and are built in a shell body of a submersible pump, and the circuit components and the circuit devices, and the submersible pump form an integral body. The output end of the output circuit 7 is connected with the power supply input end of a motor 9 of the submersible pump. The intelligent judgment, the intelligent protection, and the intelligent recovery with complete functions can be carried out to treat the faults such as short circuit, overcurrent, phase lack, phase error, dry rotation, etc. The utility model has the advantages of stable and reliable work performance low fault rate, small volume, light weight, convenient installation and low cost, can be externally connected wit a network communication component or a device, and realizes network communication and intelligent alarm.

Description

Immersible pump starts protective device with built-in intelligence

Technical field

The utility model relates to and the matching used a kind of pumping electric control gear of immersible pump, is meant that further a kind of immersible pump starts protective device with built-in intelligence.

Background technology

Immersible pump is in use prepared and is started the protection controller, generally all needs the professional to design, organize cabinet or special etc.This startup protection controller all is to adopt dynamo-electric components and parts to connect and compose; only immersible pump is realized single or simple startup protection; its shortcoming is insufficiency, functional reliability difference so that misoperation often occurs; can not implement defencive function ideally, exist heavy, the problems such as technology is coarse, cost height of the big quality of volume in addition.Also some small-power immersible pump itself then is not equipped with and starts the protection controller, can't protect automatically.Because above-mentioned aspect causes immersible pump to burn out or the accident and the fault of others damage frequently occur, and has influenced normally carrying out of producing and work.

The annual immersible pump of selling reaches more than 8,000,000 on the China market, and annual growth rate with 10% increases, but because of the break down pump that causes of immersible pump damages phenomenon, cause producer's three guarantees expense significantly to increase, producer is for many years for seeking a kind of product effort of function admirable, but can not achieve one's goal for a long time.

Summary of the invention

The purpose of this utility model; be to start the problems such as insufficiency, functional reliability difference and big and heave cost height that protector exists in order to solve existing immersible pump, provide a kind of multiple functional, reliable operation, body in a small amount light and lower-cost immersible pump start protective device with built-in intelligence.

Solution of the present utility model is as follows.Referring to Fig. 1 the utility model electricity functional-block diagram, the utility model is by central processing circuit 1, short circuit overcurrent testing circuit 2, phase detecting circuit 3, storage circuit 4, network interface 5, sensor interface 6, output circuit 7, power supply input circuit 8 connects to form, wherein the input port of the output of short circuit overcurrent testing circuit 2 and central processing circuit 1 joins, the output of phase detecting circuit 3 links to each other with the I/O port with the input port of central processing circuit 1, the input port of the input/output port of storage circuit 4 and central processing circuit 1 and I/O port join, network interface 5 links to each other with the I/O port of central processing circuit 1, sensor interface 6 joins with the input port of central processing circuit 1, the control end of output circuit 7 links to each other with the I/O port of central processing circuit 1, and the power output end Vcc of power supply input circuit 8 provides dc supply to each circuit of complete machine.

The utility model with foregoing circuit structure can be installed on the printed circuit board and be built in the immersible pump housing, with the immersible pump structure be one, simultaneously with power supply input circuit 8, output circuit 7, the power input of short circuit overcurrent testing circuit 2 and phase detecting circuit 3 and A, B, the C three phase mains is done corresponding connection, also the power output end of output circuit 7 and the three-phase power input end of motor for submerged pump 9 are joined, with network interface 5 external network communication parts or devices, with sensor interface 6 external temperature transducers etc., and transducer is adhered on the other parameters such as temperature of stator coil of motor for submerged pump 9 with the sensing detection stator coil.

Its operation principle is that three-phase alternating-current supply forms the galvanic current source after power supply input circuit 8 is handled, required direct-current working volts are provided for each circuit of complete machine.In normal operation, the control signal that central processing circuit 1 is given output circuit 7 is to make output circuit 7 output three-phase mains voltage give motor for submerged pump 9, keeps the normal operation of immersible pump.Be in operation; load current when short circuit overcurrent testing circuit 2 can detect work is at any time also given central processing circuit 1 and is analyzed relatively and reach a conclusion; when immersible pump generation load short circuits or overcurrent; central processing circuit 1 just sends instruction and gives output circuit 7; make the three phase mains of its sever supply motor for submerged pump 9, thereby stop the immersible pump operation to obtain protection timely.Phase detecting circuit 3 also is like this; promptly starting immersible pump or in service when detecting phase shortage or misphase; phase detecting circuit 3 is just given detection signal central processing circuit 1; send commands for controlling output circuit 7 by central processing circuit 1, make the three phase mains of motor for submerged pump 9 in time disconnect with the protection immersible pump.The effect of storage circuit 4 is to store the working status parameter of motor for submerged pump 9 in running at any time, in order to user's examination; Also stored working status parameter just often simultaneously, to compare with abnormal conditions.Network interface 5 external network communication parts or devices can realize that computer software control and inner parameter are adjusted, the long-range team control of construction of computer network and edition upgrading, also can realize intelligent alarm.The parameter that sensor interface 6 is given central processing circuit 1 derives from and posts at the other temperature sensor of the stator coil of motor for submerged pump 9 etc.; when motor coil produces overheated because of short circuit or overcurrent or have water to infiltrate; central processing circuit 1 sends instruction immediately and gives output circuit 7; cut off the three phase mains of motor for submerged pump 9, carry out imbalance, do error protections such as commentaries on classics, short circuit.

The utility model starts protector with existing immersible pump and compares; have following advantage: (1) has realized multiple functional intelligent protection; it can carry out intelligent decision and complete intelligent protection to faults such as short circuit, overcurrent, three-phase imbalance, phase shortage, misphase, dried commentaries on classics, and carries out intelligence restoration in overcurrent, dried commentaries on classics, three-phase imbalance fault automatically after eliminating.(2) stable and reliable working performance, failure rate is low.(3) body is in a small amount light, built-in Integration Design and need not stand-alone shell, and product cost obviously reduces; Easy for installation, existing water pump slightly for a change outlet box structure just can be installed.(4) embedded with network interface can realize that computer software control and inner parameter are adjusted, the long-range team control of construction of computer network and edition upgrading, also can realize intelligent alarm, convenient user.

Description of drawings

Fig. 1 is an electric functional-block diagram of the present utility model;

Fig. 2 is the schematic diagram of Fig. 1 a kind of physical circuit of the present utility model.

Embodiment

Referring to Fig. 1 and Fig. 2.Central processing circuit 1 of the present utility model is by central processing unit U4, resistance R 10 connects to form with R11 and capacitor C 6, short circuit overcurrent testing circuit 2 is by inductance coil L1, diode D5, resistance R 1 and capacitor C 4 connect to form, phase detecting circuit 3 is by wave detector U2 and U3, voltage-stabiliser tube Z2 and Z3, diode D8, inductance coil L2, resistance R 2 to R8 and capacitor C 5 connect to form, storage circuit 4 is made of memory U5, network interface 5 is connected to form by connector Port1 to Port3 and resistance R 13, sensor interface 6 is connected to form by connector Port4 and Port5 and resistance R 9, output circuit 7 is by power supply driver U6, resistance R 12 connects to form with R14 and capacitor C 7, and power supply input circuit 8 is by pressurizer U1, diode D1 to D4, voltage-stabiliser tube Z1, capacitor C 1 to C3 and capacitor C 8 connect to form.Wherein the 3rd pin of the U4 of the cathode output end of the D5 of short circuit overcurrent testing circuit 2 and central processing circuit 1 joins, the U2 output of phase detecting circuit 3, the output of U3 and the cathode output end of D8 respectively with the 16th pin of the U4 of central processing circuit 1, the 11st pin and the 2nd pin link to each other, the R7 of phase detecting circuit 3 and the common connection end of R8 join with the R10 that the 5th pin of the U4 of central processing circuit 1 is connected again, the 5th pin of the U5 of storage circuit 4, the 6th pin, the 7th pin and the 8th pin respectively with the 5th pin of the U4 of central processing circuit 1, the 6th pin, the 13rd pin and the 2nd pin link to each other, the Port2 of network interface 5 and the common connection end of R13 join with the 12nd pin of the U4 of central processing circuit 1 again, the Port4 of sensor interface 6 and the common connection end of R9 link to each other with the 4th pin of the U4 of central processing circuit 1 again, the 14th pin of the R12 that control end connects of the U6 of output circuit 7 and the U4 of central processing circuit 1 joins, the output Vcc of the U1 of power supply input circuit 8 respectively with the R10 and the R11 of central processing circuit 1, the 3rd pin of the U5 of storage circuit 4 and the 4th pin, the Prot1 of network interface 5 links to each other with the R9 of R13 and sensor interface 6.The model of U1 is LG78, and the model that the model of U2 and U3 is CM3532, U4 is 78E06, and the model of U5 is SC323, and the model of U6 is UC40.

Components and parts among Fig. 2 can be installed on the printed circuit board and be built in the immersible pump housing, with the immersible pump structure be one, simultaneously the D3 in the power supply input circuit 8 is connected on external power B mutually with the public connecting end of D4, one of capacitor C 8 is terminated at the C phase; The power input of the U6 of output circuit 7 is connected in external power A, B, C three-phase; Allow C phase power line pass the inductance coil L1 of short circuit overcurrent testing circuit 2, so that the L1 induced flow is crossed the load current of C phase; With the positive terminal of the negative pole end of the Z2 in the phase detecting circuit 3 and Z3 be connected to external power A mutually with C mutually, the end of R2 and R4 all is connected in external power B mutually, and allows A phase power line pass inductance coil L2, so that the L2 induced flow is crossed the load current of A phase; Three outputs of the U6 of output circuit 7 are joined with three power input AOUT, BOUT and the COUT of motor for submerged pump 9 respectively; Port1, Port2 and the Port3 of network interface 5 are passed through external network communication parts of lead or device; With the Port4 and the external other transducer of stator coil that has been built in motor for submerged pump 9 of Port5 itself of sensor interface 6, with the parameters such as temperature of sensing detection stator coil.

During work, B, C phase power supply are stabilized in required voltage through Z1 and U1 again, and provide direct-current working volts from Vcc and common to circuitry after C8 step-down, D1～D4 rectification and C1 filtering.In normal operation, the control signal that U4 gives U6 from the 14th pin is to make U6 output three-phase mains voltage give AOUT, BOUT and the COUT of motor for submerged pump 9, keeps the normal operation of motor for submerged pump 9.Be in operation; load current when L1 can detect work at any time; after D5, C4 and R1 processing, give U4 the 3rd pin; analyze comparison for U4; when immersible pump generation load short circuits or overcurrent; U4 just sends instruction and gives U6, makes the three phase mains of its sever supply AOUT, BOUT and COUT, thereby stops the immersible pump operation with timely acquisition protection.The phase detecting circuit of forming jointly by U2, Z2, U3, Z3, L2, D8, R2 to R8 and C5 etc.; starting immersible pump or in service when detecting phase shortage or misphase; just detection signal is sent into U4 by U4 the 16th pin, the 11st pin and the 2nd pin; send commands for controlling U6 by U4, the three phase mains that makes U6 give AOUT, BOUT, COUT in time disconnects with the protection immersible pump.U5 matches with U4 by its 5th pin to the 8 pin, and its effect is the working status parameter of storing at any time in motor for submerged pump 9 runnings, in order to user's examination; U5 has also stored working status parameter just often simultaneously, to compare with abnormal conditions.External network communication parts of Port1～Port3 or device, Port4 and Port5 external temperature transducer etc., so that external piece and U4 interrelate, its function is in aforementioned.

Claims

1; a kind of immersible pump starts protective device with built-in intelligence; it is characterized in that; it is by central processing circuit (1); short circuit overcurrent testing circuit (2); phase detecting circuit (3); storage circuit (4); network interface (5); sensor interface (6); output circuit (7); power supply input circuit (8) connects to form; wherein the input port of the output of short circuit overcurrent testing circuit (2) and central processing circuit (1) joins; the output of phase detecting circuit 3 links to each other with the I/O port with the input port of central processing circuit (1); the input port and the I/O port of the input/output port of storage circuit (4) and central processing circuit (1) join; network interface (5) links to each other with the I/O port of central processing circuit (1); sensor interface (6) joins with the input port of central processing circuit (1); the control end of output circuit (7) links to each other with the I/O port of central processing circuit (1), and the power output end Vcc of power supply input circuit (8) provides dc supply to each circuit of complete machine.

2; immersible pump according to claim 1 starts protective device with built-in intelligence; it is characterized in that; central processing circuit (1) is by central processing unit U4; resistance R 10 connects to form with R11 and capacitor C 6; short circuit overcurrent testing circuit (2) is by inductance coil L1; diode D5; resistance R 1 and capacitor C 4 connect to form; phase detecting circuit (3) is by wave detector U2 and U3; voltage-stabiliser tube Z2 and Z3; diode D8; inductance coil L2; resistance R 2 to R8 and capacitor C 5 connect to form; storage circuit (4) is made of memory U5; network interface (5) is connected to form by connector Port1 to Port3 and resistance R 13; sensor interface (6) is connected to form by connector Port4 and Port5 and resistance R 9; output circuit (7) is by power supply driver U6; resistance R 12 connects to form with R14 and capacitor C 7, and power supply input circuit (8) is by pressurizer U1; diode D1 to D4; voltage-stabiliser tube Z1; capacitor C 1 to C3 and capacitor C 8 connect to form.