CN2050487U

CN2050487U - Automatic control of submersible pump

Info

Publication number: CN2050487U
Application number: CN 89205863
Authority: CN
Inventors: 安世亮
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-07-27
Filing date: 1989-07-27
Publication date: 1990-01-03

Abstract

The utility model relates to an automatic control device for a submerged pump, comprising a signal indicating loop, an electronic protecting loop, a water level measuring loop, a switching device, and a switching-on loop. The utility model realizes the complete automation of the water lifting by a water supply system composed of a well, a pool, and a pressure tank, having the advantages of labor saving, and strong reliability of the water supply, and the electric motor of the submerged pump can be effectively protected.

Description

Automatic control of submersible pump

The utility model belongs to the control technique field of pumping system.

The water system of current many units is made up of well, pond and pressurized tank, promptly from well underground water is risen to ground pond, rises to pressurized tank again from the pond, is transported to each user then.Present none the complete automatic controller still of this water system.Water pump water on pressurized tank in pond is to utilize the contact force table directly to control A.C. contactor, poor reliability, and motor for submerged pump can not get protection, very easily damages.The patent No. is 86203450 " floating-point manometer type water pump automatic-control device ", supplies water to the pond though can control the well submersible pump automatically, under the situation of well water level deficiency, also can make water pump idle running, easily causes the damage of motor for submerged pump.

The purpose of this utility model is a kind of automatic controller that is applicable to the water system of being made up of well, pond and pressurized tank of design, makes it have the automaticity height, and reliability of water supply is strong, the function of the motor for submerged pump that adequately protects.

The utility model comprises signal indication loop; the Electronic Protection loop that is connected with well submersible pump, pond motor for submerged pump power supply; electronic control circuit; the level measuring loop; the COMM communication that is connected with contact force table in the pressure pan; the closing circuit that is connected with the well submersible pump with electronic control circuit, the closing circuit that is connected with pond first motor for submerged pump with COMM communication, the closing circuit that is connected with pond second motor for submerged pump with COMM communication.

COMM communication of the present utility model is by auxiliary reclay and normally-open normally-close contact thereof, often the opening of A.C. contactor, normally-closed contact, and the normally opened contact of automatic air-break switch is formed; Indicating device in the signal indication loop is made up of tutorial light and electric bell; The Electronic Protection loop is made up of capacitor, bridge rectifier, high sensitive relay and the voltage relay of three groups of parallel connections, and the input end of capacitor is connected with the three-phase input power supply of motor for submerged pump respectively; Electronic control circuit is by the normally opened contact of voltage relay, the normally-closed contact of thermorelay, and often the opening of high sensitive relay, normally-closed contact are formed; The level measuring loop is by triode, the high sensitive relay that is connected with transistor collector, and with the diode of high sensitive relay coils from parallel connection of coils, the potentiometer that links to each other with transistor emitter, and the resistance that is connected with potentiometer and capacitor are formed; The closing circuit that is connected with well motor for submerged pump power supply is by A.C. contactor and often open, normally-closed contact, the time relay and often open, normally-closed contact, the normally-closed contact of high sensitive relay is formed; The closing circuit that is connected with the pond motor for submerged pump is made of an A.C. contactor respectively.

The utlity model has following characteristics:

1, COMM communication makes two submersible pump alternations in the pond, has guaranteed the supply of water in the pressure pan reliably;

2, the Electronic Protection loop makes motor for submerged pump obtain adequately protecting;

3, whole device action sensitivity, the automaticity height;

4, signal indicating device shows the water level situation in each submersible pump working state and well, pond at any time, and the situation of whole water system is come into plain view.

Accompanying drawing has provided embodiment of the present utility model.

Accompanying drawing 1 is a circuit block diagram of the present utility model, and (1) is signal indication loop among the figure, and (2) are the Electronic Protection loop; (3) be electronic control circuit; (4) be the level measuring loop, (5) are the pond, and (6) are well; (7) be the closing circuit of well submersible pump (13); (8) be the closing circuit of pond first submersible pump (14), (9) are the closing circuit of pond second submersible pump (15), and (10) are COMM communication; (11) be pressure gauge, (12) are pressurized tank.Accompanying drawing 2 is electrical schematic diagrams of COMM communication (10), ZJ1, ZJ2 among the figure, for auxiliary reclay and often open, normally-closed contact, 5QC, 6QC are often the opening of A.C. contactor, normally-closed contact, 2ZK, 3ZK are the normally opened contact of automatic air-break switch.Accompanying drawing 3 is the electrical schematic diagram in signal indication loop (1), XD1-XD15 is a tutorial light among the figure, DL is an electric bell, 1QC, 5QC, 6QC are often the opening of A.C. contactor, normally-closed contact, LJ1-LJ8 is the normally opened contact of high sensitive relay, YJ is the normally-closed contact of voltage relay, and RJ1-RJ3 is the normally opened contact of thermorelay.Accompanying drawing 4 is electrical schematic diagrams of Electronic Protection loop (2), and C1-C9 is a capacitor among the figure, and GD1-GD3 is a bridge rectifier, and LJ6-LJ8 is a high sensitive relay, and YJ is a voltage relay.Fig. 5 is the electrical schematic diagram of electronic control circuit (3), comprises the normally opened contact of voltage relay YJ, the normally-closed contact of high sensitive relay LJ1, LJ6, LJ7, LJ8 and the normally opened contact of LJ4, the normally-closed contact of thermorelay RJ1-RJ3.Fig. 6 is the electrical schematic diagram of level measuring loop (4), comprises transistor BG1-BG5 among the figure, crystal diode D1-D5, high sensitive relay LJ1-LJ5, potentiometer R1-R5, and resistance R 6-R10 and capacitor C 10-C14, circuit are divided into identical five groups.Fig. 7 is the electrical schematic diagram of closing circuit (7), (8), (9), among the figure A.C. contactor 1QC, 2QC, 3QC coil and often open, normally-closed contact, time relay sj coil and time-delay thereof are often opened, normally-closed contact, and the normally-closed contact of high sensitive relay LJ2 constitutes closing circuit (7); Closing circuit (8), (9) respectively are made of A.C. contactor 5QC, 6QC coil.

In the present embodiment, tutorial light XD1-XD15 selects the 220V energy-saving indicating lamp for use, electric bell DL selects the 200V magneto bell for use, capacitor C1-C9 selects the 0.2u/400V mica capacitor for use, bridge rectifier is made up of 2CP19 type crystal diode, voltage relay YJ selects the YJ-28C type for use, high sensitive relay LJ1-LJ5 selects the JRX-13F type for use, LJ6-LJ8 selects the JQX-4 type for use, transistor BG1-BG5 selects the 3AX31C type for use, potentiometer R1-R5 selects 100K strand potentiometer for use, and resistance R 6-R10 is the 3.9K fixed carbon resister, and crystal diode D1-D5 selects the 2CP19 type for use, A.C. contactor 1QC makees the CJ10-60 type of using, 2QC-6QC selects the CJ10-40 type for use, and time relay sj is selected the JS7-2A/220V type for use, intermediate relay ZJ 1, ZJ2 selects the XK06-02-192 type for use.

Working principle of the present utility model is: when pond submersible pump (14); (15) state is normal; pond (5) water level is when low limit value is above; Electronic Protection loop (2); level measuring loop (4) and all conductings of electronic control circuit (3); the signal that electronic control circuit (3) will permit closing a floodgate is sent into COMM communication (10); this moment is if pressurized tank (12) water yield reduces; pressure reduces; the pointer of contact force table (11) turns round gradually; contact with start-up point E at last; closing circuit (8); (9) connection in, for example (8) are connected, the adhesive of A.C. contactor 5QC coil; its normally opened contact closure; normally-closed contact is opened, and pond first submersible pump (14) begins to go up water, the (see figure 2) because closing circuit (9) is connected with the 5QC normally-closed contact; thereby its circuit is obstructed, pond second diving air pump inoperative.Along with pressure in the pressurized tank (12) increases, the pointer of pressure gauge (11) leaves E, but because of 5QC connects with its normally opened contact, so the self-sustaining of 5QC coil, pond first submersible pump works on, and the tutorial light XD3 in the signal indication loop (1) is bright.When pressure gauge (11) pointer moves to halt F, intermediate relay ZJ 1 is connected, its normally-closed contact is opened, the normally opened contact closure, because closing circuit (8) is connected with the normally-closed contact of ZJ1, so its circuit is cut off, pond first submersible pump (14)/quit work, intermediate relay ZJ 1 self-sustaining this moment own.When contact force table (11) pointer is got back to start-up point E once more, closing circuit this moment (8) is obstructed, and closing circuit (9) is switched on, and pond second submersible pump (15) is gone up water, thereby realizes two pump impellers stream automatic loading water.When one of two pond submersible pumps break down, for example (14) turn-to-turn short circuit of pond first submersible pump or alternate opening circuit, automatic air-break switch 2ZK tripping operation, closing circuit (8) and intermediate relay ZJ 1 lose C power supply and can not working mutually, intermediate relay ZJ 2 can not self-sustaining because of connecting with 2ZK, thereby makes a pond submersible pump automatic loading water.At this moment, the high sensitive relay LJ7 in the protection loop (2) starts, and the tutorial light XD14 in the signal indication loop 1 is bright, and electric bell DL sends audible alarm.When well submersible pump (13) state normal; permission of well (6) water yield and pond (5) water level drop to when hanging down limit value; Electronic Protection loop (2) and level measuring loop (4) send signal for respectively control loop (3); make that control loop (3) is unimpeded to send switching signal to closing circuit (7); time relay sj coil in the closing circuit (7) and A.C. contactor 2QC; the starting of 3QC coil; well submersible pump (13) reduced voltage starting; behind a setting time; the time-delay normally opened contact closure of time relay sj; the 1QC coil working; its normally-closed contact disconnects; 2QC; 3QC and SJ coil blackout; A.C. contactor 1QC normally opened contact closure, the operation of well submersible pump (13) total head, and self-sustaining.When water level in water pool rises to ceiling value, high sensitive relay CJ1 coil in the level measuring loop (4) starts, the normally-closed contact of high sensitive relay LJ1 in the electronic control circuit (3) disconnects, closing circuit (7) outage, well submersible pump (13) quits work, and has realized the automatic control that well submersible pump (13) is gone up water.When water level in water pool drops to low limit value, repeat above-mentioned working procedure again.

Claims

1; a kind of submersible pump automatic control device; it is characterized in that comprising signal indication loop (1); respectively with well submersible pump (13); pond first submersible pump (14); the Electronic Protection loop (2) that pond second submersible pump (15) motor three-phase input power supply is connected; electronic control circuit (3); level measuring loop (4); the COMM communication (10) that is connected with contact force table (11) in the pressure pan (12); the closing circuit (7) that is connected with well submersible pump (13) motor with electronic control circuit (3); the closing circuit (8) that is connected with pond first submersible pump (14) motor with COMM communication (10), the closing circuit (9) that is connected with pond second submersible pump (15) motor with COMM communication (10).

2, according to the described submersible pump automatic control device of claim 1, it is characterized in that said COMM communication (10) comprise intermediate relay ZJ 1, ZJ2 coil and often open, normally-closed contact, often the opening of A.C. contactor 5QC, 6QC, normally-closed contact, the normally opened contact of automatic air-break switch 2ZK, 3ZK.

3,, it is characterized in that the indicating device in the said signal indication loop (1) comprises tutorial light XD1-XD15 and electric bell DL according to the described submersible pump automatic control device of claim 1.

4,, it is characterized in that said Electronic Protection loop (2) comprises capacitor C1-C9, bridge rectifier GD1-GD3, high sensitive relay LJ6-LJ8 and voltage relay YJ according to the described submersible pump automatic control device of claim 1.

5, according to the described submersible pump automatic control device of claim 1, it is characterized in that said electronic control circuit (3) comprises the normally opened contact of voltage relay YJ, the normally-closed contact of thermorelay RJ1-RJ3, the normally-closed contact of high sensitive relay LJ1, LJ6-LJ8, and the normally opened contact of high sensitive relay LJ4.

6, according to the described submersible pump automatic control device of claim 1, it is characterized in that said level measuring loop (4) comprises triode BG1-BG5, the high sensitive relay LJ1-LJ5 that is connected with transistor collector, diode D1-D5 with the high sensitive relay coils from parallel connection of coils, be connected the potentiometer R1-R5 on the transistor base, capacitor C10-C14 that is connected with potentiometer and resistance R 6-R10.

7, according to the described submersible pump automatic control device of claim 1, it is characterized in that said closing circuit (7) comprises A.C. contactor 1QC, 2QC, 3QC coil and often open, normally-closed contact, the time relay sj coil and often open, normally-closed contact, high sensitive relay LJ2 normally-closed contact.

8,, it is characterized in that said closing circuit (8), (9) are made of A.C. contactor 5QC, 6QC coil respectively according to the described submersible pump automatic control device of claim 1.