CN2141473Y

CN2141473Y - Submerged pump integral comprehensive protector

Info

Publication number: CN2141473Y
Application number: CN 92237268
Authority: CN
Inventors: 王仲元
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-10-28
Filing date: 1992-10-28
Publication date: 1993-09-01
Anticipated expiration: 2002-10-28

Abstract

The utility model discloses a submerged pump integral comprehensive protector, mainly comprising an integrated package JC, a contactor CJ, and adjustable resistors Wx 1 and Wx 2. The contactor is connected with the integrated package, and the integrated package is connected with the adjustable resistor the Wx 1 and the Wx 2; an adjusting knob is arranged on the casing of the protector. The device adopts an integrated circuit for monitoring and controlling the signal; the circuit is simple, and the work is reliable. A low-loaded rotary knob and an overcurrent rotary knob can be corrected according to the well depth and the lift for making the electric appliance reach the working point of the optimal matching. The utility model can automatically cut the circuit of the contactor coil and stop the work for preventing the electric appliance from burning out when the conditions, such as the lack of the phase, the break of wire, low network voltage, higher bias phase voltage, or the sandstones blocking impellers after the well water is drawn out occur.

Description

Submerged pump integral comprehensive protector

The utility model relates to the three phase electric machine protective gear, more particularly is submersible pump integrated comprehensive protector.

Because arid for years no rain; the rural area uses electric pump irrigation and drainage farmland more and more general; and most of peasants are limited to the understanding of electricity; a large amount of submersible pumps were burnt when the busy farming season; its main cause has two; the one, the standardization level of rural power supply and use is low; the 2nd, present submersible pump unprotect device; during situations such as chance phase shortage, low excessively, the inclined to one side phase of line voltage, well water are drained, impeller obstruction; often make burn-down of electric motor; therefore nearly millions of the electric pumps of annual China damage, and large stretch of crops can not in time be watered when serious drought.The protective gear of submersible pump and other motor has two kinds at present; a kind of is the thermorelay protector; another kind of is the hands off device; it all is the protector that adopts thermorelay control; it is to utilize after the phase failure that electric current increases in other quarter-phase circuit; make the thermometal bending tablet of thermorelay and disconnecting circuit; its shortcoming is that disconnection is long actuation time; sometimes having little time disconnecting circuit and burnt motor, is to be difficult for after the thermometal sheet repeatedly moves restoring again, causes protector sensitivity to reduce or inefficacy; and protective function is few; just adopt single overcurrent or overvoltage protection, when other situation occurring, protective gear performs practically no function.

The purpose that this reality is new is to provide a kind of exactly can eliminate above-mentioned shortcoming; in that phase shortage, line voltage are low excessively, electric current is excessive, inclined to one side phase voltage is excessive and well water is drained or during clogging impeller; can cut off the electricity supply rapidly, thus the integrated comprehensive protector that the protection power device is not damaged.

The utility model is provided with contactor CJX, and integrated package JC, and three-phase power line connects with 6 of contactor CJ ', 7 ', 8 ' pin, a phase line wiring circle 1 ' pin wherein, and another phase line is through K switch ₁5, link with 2 pin of integrated package, 8,9 pin of integrated package JC and 10,11 pin are connected to adjustable resistance Wx respectively ₁And Wx ₂, Wx ₁Levelling is low carries Wx ₂The levelling overcurrent is connected to normally closed switch K between integrated package 12,13 pin ₂, UNICOM between 14,15 pin of integrated package JC, 16,17,18 pin are that output terminal connects with power device, the indirect Light-Emitting Diode (LED) L of 6,7 pin.

The utility model adopts intergrated circuit monitoring, control signal, circuit is simple, reliable operation, according to well depth, low year of lift levelling and overcurrent knob, make power device reach optimal match point, and meet phase shortage, broken string, low excessively, the inclined to one side phase voltage of line voltage is excessive or well water is drained, during the sandstone clogging impeller, all can cut off the coil circuit of contact automatically and quit work, so this machine can apply to any Electric actuator that utilizes three-phase electricity work.

Description of drawings: figure is this device control principle figure.

Below in conjunction with drawings and Examples the utility model is described further:

Comprise contactor CJ, integrated package JC, the low adjustable resistance Wx of carrying among the figure ₁, overcurrent adjustable resistance Wx ₂, often open moving K switch ₁, normally closed stop switch K ₂And flash of light diode L.With 2.4～4KW integrated comprehensive protector is example, and integrated package is the 18 pin JC of this circuit design, and contactor is CJ10-10, resistance Wx ₁Be 5.6K Ω/5W.Wx ₂Be 5.6K Ω/5W, press K switch during starting ₁(switch starter is as the delayed firing of integrated package at this moment; immediate current is excessive not to be burnt the protection integrated package because of starting); make the contactor adhesive connect power supply, when lifting switch starter, integrated package has been serially connected with in the contactor 380V coil circuit; integrated package is started working; its output terminal 16,17,18 pin are powered to submersible pump, the submersible pump running, and this moment will be according to well depth and low (knob) resistance Wx that carries of lift adjustment ₁Or and overcurrent (knob) resistance Wx ₂, make it to reach the optimum Match operation point.When well water is drained; load reduces electricity and diminishes, and then this device auto-action cuts off the contactor power supply; submersible pump quits work; when impeller stops up stall or rotates when dumb, load increases electric current and increases, and this device also cuts off the contactor power supply; in addition when low excessively, the inclined to one side phase voltage of line voltage during excessive and electrical network phase shortage; this device also can shut down automatically, during shutdown, presses stop switch K ₂, i.e. disconnecting circuit, submersible pump quits work.

This device also can be used as tap water pressure jar automatical control system; damage at pressure gauge, guide line opens circuit or relay burns, pressurized tank pressure overflow definiteness timestamp; can both autostop, thus eliminated the ineffective and expense electricity that causes of present automatical control system, burnt pump, quick-fried jar or the quick-fried peril such as pipeline that takes off.

Luminotron tube L is glittering when working properly.

Claims

A kind of submersible pump integrated comprehensive protector has contactor CJ, it is characterized in that the core is integrated package JC, the JC1 pin with connect 6 of contactor CJ ¹Pin links, the coil output 2 of 2 pin and contactor ¹Connect, 8,9 pin and 10,11 pin of integrated package are associated with adjustable resistance Wx respectively ₁And Wx ₂, Wx ₁For low carrying adjusted Wx ₂For the overcurrent levelling, be connected to normally closed switch K between 12,13 pin of integrated package ₂