CN2351774Y

CN2351774Y - Electromechanical integral automatic controller for single-phase AC electric pump

Info

Publication number: CN2351774Y
Application number: CN 97251403
Authority: CN
Inventors: 雷光坤
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-12-31
Filing date: 1997-12-31
Publication date: 1999-12-01
Anticipated expiration: 2007-12-31

Abstract

The utility model relates to an electromechanical integral automatic controller for a single-phase AC electric pump. The existing load switch started by a contact point is canceled. A medium baffle plate box in a pipe, a trigger of an operating and switching non-contact load switch R-S, and a Schmidt trigger circuit of a protection, starting, switching non-contact starting switch are orderly and electrically connected. Three Schmidt triggers, the trigger of a switching non-contact load switch R-S, a fault level preservation switch, a contact starting on-off circuit, a load current signal circuit, and an AC power supply excess voltage sensitive circuit are electrically connected. Thus, a controller which is integrated into one with the single-phase AC electric pump or is remotely controlled in line, automatically starts or closes, and has over current and excess voltage protection is formed. The utility model is suitable for the single-phase AC electric pump for supercharging, sucking and sending cold and hot liquid (gas), and other media.

Description

Single-phase AC electric pump electromechanical self-actuated controller

The utility model is the control device about the single-phase AC electric pump.The single-phase AC electric pump generally can be divided into the supercharge pump of capstan medium and the low level medium is drawn to certain lift, the submersible pump class.Existing single-phase alternating current apparatus for controlling pump reason such as can not follow because of still there being unified national standard, and on the market and in the application, though kind is many, the overwhelming majority has only electromagnetism or mechanical type to control unprotect.But the general merger of these control device is: a class is with a manual power on/off pumping source of contact switch.Another kind of is that employing manually moves or retaining catch to automatic, manual in the contact of one switch with pump, removes direct break-make clear water class electric pump power supply; When manual, energized, electric pump work; Disconnect the electric pump power supply during retaining catch; During automatic catch, the plastics manger board that can horizontally rotate at horizontal clear water pipe mid-, the non-of plate comes the water surface to adorn a return cylindrically coiled spring that is dipped in the water, the other end of plate presss from both sides the magnetic links of a dew retting in water, plate length central authorities slightly near the baffle plate at magnet steel place be injection molded into cylindrical, place in the protrusion arc groove perpendicular to plate washer plastic casing bottom surface and locate.When the current dynamic pressure contract spring, when pushing baffle plate open, magnetic links goes to and is positioned at the outer directly normally opened contact switch place of break-make electric pump 220V AC power of baffle plate plastic casing diapire, makes it adhesive; When water was mobile or not anhydrous, spring was with the baffle plate return, and magnetic links also makes its disjunction in company with leaving contact switch.When electric pump motor has the starting winding, generally use known centrifugal starting switch or relay starting switch; In recent years, in submersible pump, also rare employing hydraulic pressure starting switch, the mechanical type pressurized shifting part that is about to normally closed starting switch places in the pipeline that exceeds the water surface, when the submersible pump starting operation is drawn to these parts duct height of living in to water, push normally closed starting switch open.

Above-mentioned control device, the one, own overcurrent of no electric pump and control circuit (stall, short circuit, under-voltage) and AC power overvoltage protection, easily cause be used in wait in humidity, open-air, high temperature, liquid (gas) body than in the rugged surroundings or nobody look after or this type of electric pump damage of supply voltage shakiness etc. even accident such as burn; The 2nd, contact switch volumes such as electromagnetism are big, versatility and reliability is relatively poor, the life-span is short, noise is bigger, are not suitable for use such as No Open Flames the place of etc.ing; The 3rd, the manual shift operation is more loaded down with trivial details, easily causes because of the mistake gearshift waits and damages electric pump; The 4th, aforementioned magnetosensitive machinery, the automatic run switch of contact easily make spring, magnet steel inefficacy, manger board etc. block because of long-pending thing, and be both unreliable also dangerous with the load switch of the direct adhesive electric pump of magnet steel.

The purpose of this utility model is: a kind of integrate automatic starting, row fortune and protection etc. are provided at lower cost, have improved reliability, have the electromechanical self-actuated controller of advantages such as versatility.

Self-actuated controller of the present utility model is made up of integrated circuit, electronics, electromagnetism and mechanical device parts etc.The contactless starting switch only when the manual starting of electric pump that the starting winding is arranged, is connected starting winding power supply automatically; Contactless load switch, when needs electric pump starting operation, automatically or the manual main winding power supply of connecting, electric pump automatically shuts down the main winding power supply in the time of should be out of service routinely; When power supply, electric pump generation overcurrent (refer to AC power, electric pump load and DC control supply short circuit or seriously under-voltage, electric pump motor stall etc., down with), during AC power generation overvoltage fault, automatically shut down and pin contactless starting and load switch etc. simultaneously, make electric pump out of service, overcurrent or overvoltage pilot lamp are bright, fault sound equipment alarm work, are cut off until power supply.This circuit is provided with a manual backup circuit breaker in addition, and during this switch connection, except that electric pump always moved under non-malfunction, failure protection function etc. were identical during with automatic control.Automatically have or not in the induced electricity pump line road in the control circuit whether medium and medium flow, a magnetic coupler is arranged.

If electric pump is the supercharge pump class, when the pipe medium flows, the automatic conducting of contactless load and starting switch; The pipe medium does not flow or when not having medium, contactless load and starting switch are turned off, and electric pump is inoperative or out of service; To there not being starting winding supercharge pump, do not connect contactless starting switch to supercharge pump and get final product.If electric pump is the submersible pump class, have only when giving its start control circuit one trigger pip, electric pump just starts; After the electric pump starting, the operation of medium electric pump is arranged in the water inlet joint, no medium electric pump is out of service automatically; Electric pump is in service, and when not had medium in the water inlet joint, electric pump is out of service automatically.When being subjected to the electric pump starting of control automatically, starting pilot lamp and autocontrol operation pilot lamp are bright, have only the autocontrol operation pilot lamp bright during operation; When being manually control, it is bright to increase by a manual pilot lamp during then than automatic control; When overcurrent, overvoltage fault take place, have only corresponding overcurrent or overvoltage pilot lamp bright (annotating: when DC control supply generation over current fault, be that the overvoltage pilot lamp is bright).The overcurrent protection signal comes from the electric pump load current, and the overvoltage protection signal comes from DC control supply.Be positioned in the horizontal pipe of flow media when end takes place for the signal of magnetic coupler, medium flows or when not having medium, one end is sealing magnetic links, and the medium baffle plate of a cylindrical location fulcrum, oblique slightly media flow direction are being arranged near this end place, are covering pipeline section in the baffle plate box, baffle plate along the through hole that has two ends and a side with the diaphragm seal sealing in the fulcrum of cylindrical location; Two madial walls of baffle plate box respectively have an anti-long-pending thing of not only having located medium baffle plate fulcrum but also having made it flexible spacing rotation to stop up support; The magnetosensitive device parts of magnetic coupler signal receiving end rationally are fixed in medium baffle plate box one outside; When media flow was pushing away the baffle plate rotation, the magnetic line of force of magnetic links just passed baffle plate box sidewall and vertically wears to magnetosensitive device parts again, when no medium or medium flow in the pipeline, and the general reliable deadweight return of medium baffle plate, magnetic links leaves magnetosensitive device; Adding one in case of necessity between medium baffle plate and locating support or sidewall suitable make the plane snail volume of medium baffle plate return or spring such as reverses; Medium baffle plate box and wherein relevant parts can be made with metal or nonmetallic materials according to requirements such as uses.This controller can be realized the automatic control to different capacity, request for utilization electric pump by adjusting minority device parameters of operating part or change DC control supply voltage in its control circuit.

This controller is the electromechanical structure, the device parts overwhelming majority that it adopts is known common, add that it is signal controlling except that contactless load and starting switch, can use a kind of shell and change the control circuit of device parameters of operating part less for all size electric pump, so it is cheap, highly versatile is suitable for producing in batches; It has realized this type of electric pump that is widely used in industrial or agricultural, scientific research, field such as daily and military is carried out with pump or long distance all function control and protection automatically, therefore not only can save man-hour on duty but also can prolong electric pump serviceable life, reduces maintenance cost; It is by master controls such as integrated circuit, noncontacting switches, thereby has improved reliability, and noise reduces, power saving safety; It can adopt switch, dial plates such as film, and is easy to use, and state is indicated, fault alarm is clearly demarcated, has attractive appearance; It is applicable to the cold and hot state medium, also is applicable to liquid (gas) body medium, also can use for powder or frangible molecule medium; Changing under minority device parameters of operating part or the DC control supply voltage prerequisite, be suitable for various single-phase AC electric pumps and use.

Fig. 1 for band direct supply, side signal transmission to circuit block diagram.

Fig. 2 is the local main cut-open view of magnetic coupler medium baffle plate box.

Fig. 3 is a magnetic coupler medium baffle plate box A-A cut-open view.

Fig. 4 is the embodiment circuit diagram.

For the ease of understanding formation of the present utility model and use-case.Following elder generation 1 is illustrated in conjunction with the accompanying drawings.The line of not marking transmission direction among Fig. 1 is the AC power path.Alternating currents such as 220/110V are connected by frame 13 (following all only with the corresponding square frame of digitized representation) power switch, through the stable DC control supply of 14 outputs, 14 provide direct supply to 6,9,10,15,19,20 and 22 etc. respectively, and 3,4 and 8 direct supply is provided by 20 outputs.As the electric pump of being controlled is the submersible pump class, connect 13, touch starting switch by the manual point in 15, trigger circuit 16 and 21 obtain to trigger low level simultaneously, divide the starting schmitt trigger that makes pipeline suck medium in the schmitt trigger 22 and 20 of controlling break-make starting winding in addition in required time, all to export high level, bright, contactless starting switch 23 conductings of its starting pilot lamp, when the electric pump rotating speed rises to more than 75% of rated speed, 16 trigger pips disappear, 22 output low levels, 23 end, and disconnect the starting winding; On the other hand, the starting schmitt trigger provides direct supply for triggering low level control circuit 3 and R-S trigger 4 etc. when signal circuit 8, overcurrent or overvoltage that the overvoltage high level is provided initially all have the high level of triggering and starting operation after setting time-delay in 20; At this moment 3 simultaneously the R in 4 and S end provide the low level trigger pip, 4 output terminal provides high level to the triggering and the working indicating 11 of contactless load switch 17,11 relay indicating light is bright and trigger 17 conductings, and the main winding of electric pump load 12 is connected, the electric pump running; Two provide high level to emergency protection level maintained switch circuit 5; The schmitt trigger 6 input trigger ends of the indication of three-dimensional control fault, warning 10 provide high level, and 6 to 10 output low levels; In the four-way control 15 the start trigger circuit of the automatic starting switch of supercharge pump class provide starting just wink high level.In addition, in wink before 4 output high level, have in 6 one to make its trigger end obtain the start trigger circuit of instantaneous trigger high level, to guarantee 6 in this output low level moment.When sucking medium in the pipe, flow media is pushed the medium baffle plate (magnetosensitive is held) in the magnetosensitive medium baffle plate box 18 open, make the trigger circuit 19 that are subjected to the control of magnetosensitive receiving end, operation R-S trigger provides the set trigger pip in 20, this trigger output high level, provide direct supply to 3,4,8, after this 21 trigger pips disappear, starting schmitt trigger output low level in 20; Two trigger output terminals in 20 are not connected.Meanwhile, obtain the circuit 1 of load direct current signal, reaching this current signal of change has a unidirectional conduction device to 2 conductings into the load level signal with pining down between the 3 triggering levels circuit 2,2 and 3 just, when electric pump starting current big moment, 3 not controlled by 2 high level; After electric pump transferred operation to by starting, 2 reduced to low level and pin down 3 trigger end and are always set and trigger.As electric pump is the supercharge pump class, connect 13 and also in the pipe flow media is arranged, electric pump starts moment, there are two triggers of 20 to export high level simultaneously, in 15, there is the alternative automatic point that touches starting switch of wherein manually putting to touch starting switch again, circuit is pressed submersible pump class control procedure automatically, makes electric pump starting and operation; Above-mentioned electric pump is not if there is the starting winding, then do not connect 23 positive and negative gate terminal and gets final product.After electric pump starting, the operation, do not flow or do not have in medium or the submersible pump water inlet joint and do not have medium as the pipe medium, the supercharge pump and the submersible pump class of starting winding being arranged, starting back auto stop; Then inoperative to the supercharge pump class of not having the starting winding.

When over current fault takes place when, 1 current signal output significantly or increase exponentially, 2 load level signal is significantly or significantly improve, make 3 two trigger ends all rise to high level, 4 output low levels, 11 Triggerless through of short duration time-delay, relay indicating light extinguishes, and 17 end, the electric pump stall; 6 export high level simultaneously, 10 malfunction indicator lamp is bright first, and sounder is reported to the police; Second the unidirectional conduction device in 15 to the higher high level of 3 two trigger ends and 2 feedbacks and in 5 the level of emergency protection keep the noncontacting switch control utmost point high level to be provided, to make its conducting, make 6 trigger end simultaneously when 20 have only moment low level output because of the electric pump stall, continue to obtain to trigger low level; Second trigger high level to 16 and 21 outputs, schmitt trigger and 22 outputs are low level in the pinning 20, even this moment, the people was that the manual point of pressing in 15 touches starting switch, can not start electric pump; Till this over current fault guard mode is retained to always and cuts off the electricity supply.When AC power generation overvoltage (or serious electric leakage even short circuit take place in the control circuit somewhere) fault; the input of direct current stabilizer and output end voltage difference increase in 14; make responsive coupling mechanism generation terminal circuit 7; trigger pip circuit 8 to band coupling mechanism receiving end sends fault-signal; and malfunction indicator lamp wherein is bright; 8 produce the high trigger signal that resets gives 3, makes 4 output low levels, and protection control procedure after this is identical during with aforementioned overcurrent.

When under special circumstances; when using the manual backup circuit breaker circuit 9 starting electric pump operations of tape light; its manual pilot lamp is bright; direct supply is provided or triggers high level to 3,4 and 11 etc.; at this moment, remove in electric pump operation back, no matter have or not in flow media or the pipe neutralization water inlet joint in the pipe and have or not medium, outside electric pump all moves; control procedure and functions such as other starting, operation and overcurrent, overvoltage emergency protection are identical during with aforementioned automatic control.In addition, can realize to different capacity the control of request for utilization electric pump by adjusting in the

control circuit

1,2,3,4,7,11,17,23 etc. relevant device parameters of operating part or changing DC control supply voltage height in case of necessity.

Do an explanation below in conjunction with accompanying drawing 2 and 3 pairs of medium baffle plate box correlator member that produce magnetic coupler generation signal.With reference to accompanying drawing, when the signal generation of magnetic coupler is held in the horizontal pipe that is positioned at flow media, medium flows or do not have medium, by diaphragm seal [2] with the both ends of the surface of magnetic links [1] and a side seal and at the medium baffle plate [6] of locating a cylindrical location fulcrum near [1], oblique slightly media flow direction, be covered with pipeline section in the baffle plate box, medium baffle plate [6] along the through hole that has two ends with diaphragm seals [4] sealing in the fulcrum of cylindrical location; Two madial walls of baffle plate box respectively have one not only to locate medium baffle plate [6] fulcrum but also make it the support [5] (be four by magnetic links [1] one side and protrude small column, opposite side is three) that the anti-long-pending thing of flexible spacing rotation stops up; The magnetosensitive device parts [3] of magnetic coupler signal receiving end rationally are fixed in medium baffle plate box one outside; When media flow is pushing away medium baffle plate [6] rotation, the magnetic line of force of magnetic links [1] just passes medium baffle plate box sidewall and vertically wears to magnetosensitive device parts [3] again, when no medium or medium do not flow in the pipeline, the general reliable own wt return of medium baffle plate [6], magnetic links [1] leaves magnetosensitive device; Medium baffle plate box and wherein relevant device parts can be made with metal or nonmetallic materials according to requirements such as uses; Spring such as add a suitable plane snail volume that makes medium baffle plate return in case of necessity between medium baffle plate [6] and locating support [5] or sidewall or reverse.

For the concrete use-case of setting forth, be that example is illustrated with accompanying drawing 4 more below.According to accompanying drawing, when SB switch connection AC power, through TC step-down, VC ₂Rectification, C ₇And C ₈Filtering etc., V ₁₃The three terminal regulator voltage stabilizing, directly to V ₁₃The IC that output terminal links to each other ₄(being time integrated

circuit

555 or 556, hereinafter to be referred as IC) and peripheral circuit thereof etc. provide direct supply.If the electric pump of being controlled is the submersible pump class, clicks manual point and touch starting switch SA ₂, C ₁₀, C ₁₁Momentary charge is by V ₁₈, C ₁₀, R ₂₂, R ₂₃And C ₁₁, R ₂₆, R ₂₇Two trigger circuit, wherein R forming ₂₂＞＞R ₂₃, R ₂₆＞＞R27, C ₁₀＞C ₁₁, respectively to IC ₁Schmitt trigger and IC ₄Two trigger ends the triggering low level is provided, this two trigger is respectively to by V ₂₆, R ₂₈The trigger circuit and the IC that form ₂And peripheral circuit output high level, V on the one hand ₂₆Bright, the contactless starting switch V of starting pilot lamp ₂₂Conducting, connect the starting winding of electric pump M, when electric pump M rotating speed rises to 75% when above of rated speed, C ₁₁Discharge off, IC ₄Output low level makes V ₂₂End V ₂₆Extinguish, the starting winding disconnects; On the other hand, IC ₂And by R ₇, R ₈, C ₃The trigger circuit of forming get electric, because of R ₇, R ₈And C ₃Value relatively large, and R ₇＞R ₈, to IC ₂The triggering low level is provided, makes IC ₂Output terminal one is to by R ₁₇, V ₂₄The trigger circuit of forming provide triggering high level, V ₂₄Bright, the contactless load switch V of pilot lamp ₂₁Conducting, electric pump main winding energising operation; The 2nd, IC ₂Discharge end end, by R ₉And R ₁₃, V ₉Deng the bleeder circuit of forming to IC ₃Two trigger ends provide high level, IC ₃Respectively to by R ₁₄, R ₁₅, R ₁₆, V ₁₁, the indicating fault formed such as E and audible alarm circuit and by V ₈, V ₉, R ₁₁, C ₅Deng the emergency protection level maintained switch V that forms ₉, triggering, V ₉Circuit provides low level, and they are not worked; Three-dimensional is by V ₁₇, RR ₂₅, C ₁₂The supercharge pump class of forming point is automatically touched trigger circuit in the starting switch, provide starting just wink high level.In addition, at IC ₂Firm electric, its discharge end is become by preceding wink electric C by original state ₄, R ₉, R ₁₀, V ₂₃In the circuit of forming, give IC ₃Trigger end trigger high level in a flash, make IC ₃This in wink output low level.When sucking medium in the pipe, flow media makes magnetic coupler A ₂The resistance of receiving end mistor reduce greatly, resistance adds R thus ₁₉, R ₂₀The trigger circuit of forming are to IC ₁In the R-S trigger set trigger pip is provided, this trigger is to IC ₂And peripheral circuit provides direct supply, after this C ₁₀Discharge off, IC ₁In the schmitt trigger output low level; Because of the output terminal at this two trigger is connected to diode V ₁₅And V ₁₆, make this two output terminal not connected.Simultaneously, behind the electric pump starting operation, current transformer TA obtains the inductive load current signal, and this current signal is through VC ₁, C ₂Rectifying and wave-filtering is at R ₃Two ends produce corresponding load level signal, pin down IC ₂The height of triggering level is because of V ₄Unidirectional conducting effect, when electric pump starting current big moment, the load level signal can not pass to IC ₂Trigger circuit are in electric pump starts moment, because of C ₃, R ₇, R ₈Value relatively slow than ambassador's charging process; After electric pump transfers operation to by starting, R ₃The two ends level signal is reduced to low level and is pind down C ₃Charging voltage in triggering the low level scope, make R ₈Add C ₃Voltage, be lower than threshold voltage.If electric pump is the supercharge pump class, connecting in SB and the pipe has flow media, and electric pump starts moment, IC ₁Two output terminals all to IC ₂The output high level, C ₁₂Give turn-off thyristor V ₁₇The control utmost point one instantaneous high trigger signal, V ₁₇Instantaneous conducting, C ₁₀, C ₁₁Automatically charging does not need to touch starting switch by manual point, and other control procedure is identical with the submersible pump class; Above-mentioned electric pump if there is not the starting winding, does not then meet V ₂₂The positive and negative gate terminal get final product.After electric pump starting, the operation, if the pipe medium does not flow or do not have no medium in medium or the submersible pump water inlet joint, to the supercharge pump and the submersible pump class of starting winding are arranged, because of IC ₁The R-S trigger can not export high level, starting back auto stop always; To there not being the supercharge pump class of starting winding, also because of IC ₁The R-S trigger can not export high level and fail to start.When electric pump or power supply generation over current fault, R ₃The load level signal at two ends significantly or significantly improve makes IC ₂Trigger circuit after of short duration charging time-delay, rise to R ₃Level adds V ₃(R and S end level are higher than R respectively to high level after the pressure drop ₁₂Control voltage and 1/2 control voltage, IC ₂Output low level, its discharge end also conducting are low level, V ₂₄Extinguish, V ₂₁End the electric pump stall; While IC ₃The output high level makes V ₁₁Bright, the work of E acoustic alarm, and pass through V ₈, V ₃To C ₃, C ₂(charging) higher high level of feedback and to V ₉The control utmost point high level conducting V is provided ₉, make IC ₃Trigger end at IC ₁When having only instantaneous low level to export, continue to obtain to trigger low level because of the electric pump stall; Simultaneously, IC ₃Also by diode V ₁₉And V ₂₀, to IC ₁Schmitt trigger and IC ₄Output triggers high level, pins the low level output of this two trigger, even at this moment the people is for pressing SA ₂, can not start electric pump; Till above-mentioned over current fault guard mode is retained to always and cuts off the electricity supply.When AC power generation overvoltage or the serious electric leakage of control circuit somewhere generation class fault, direct supply three terminal regulator V ₁₃Input and output end voltage difference enlarge markedly, make through L, C ₁Anti-jamming circuit, V ₁After normal pressure difference is removed in step-down, R ₁Both end voltage reaches and triggers V ₂The triggering level of unidirectional thyristor conducting, photo-coupler A ₁The end led lighting takes place, simultaneously, through R ₂The AC power overvoltage of step-down current limliting and control circuit overcurrent pilot lamp V ₄Bright, A ₂The conducting of receiving end photodiode, this conducting diode adds R ₅, R ₆Deng the trigger circuit of forming, to IC ₂Two trigger ends provide high level, IC ₂Output low level, protection control procedure after this, function are identical during with aforementioned overcurrent.

When under special circumstances, connect manual backup circuit breaker SA ₁During the starting electric pump, by R ₂₁, V ₇The manual pilot lamp of forming is bright; direct supply is provided simultaneously or triggers high level to aforementioned corresponding control circuit; no matter remove this moment to have or not in flow media or the pipe neutralization water inlet joint in the pipe and have or not medium; electric pump is all ceaselessly outside the operation, and is the same when other control procedure and failure protection function and aforementioned automatic control.R ₁₈And V ₁₄Be the direct supply indicating circuit; R ₂₉, C ₁₄And R ₃₀, C ₁₅Be respectively V ₂₁And V ₂₂Holding circuit.In addition, suitably adjust R ₃Can change etc. parameter and to pin down level; Suitably adjust R ₁₂Can change IC ₂R-S triggering level height and hysteresis voltage size; Suitably adjust R ₇, R ₈, C ₃, and R ₃, C ₂Can change the time-delay length of this circuit etc. parameter; Also can in the 4.5-18V scope, change direct supply voltage and TA, C in case of necessity ₂, R ₃, R ₇, R ₈, C ₃, R ₁₂, R ₁₇, R ₂₈, V ₂₁, V ₂₂Deng the device parameters of operating part, to be fit to control to different capacity, request for utilization electric pump.

Claims

1, a kind of single-phase AC electric pump electromechanical self-actuated controller, by centrifugal or relay starting switch with the pump one, manually to automatic, manually or the contact switch of retaining catch, magnetosensitive contact automatic load switch during automatic catch is formed, it is characterized in that: the trigger end of operation R-S trigger is electrically connected with the magnetic coupler signal receiving end, its output terminal with start power end and the delay trigger circuit that the schmitt trigger output terminal is electrically connected the contactless load switch R-S of break-make trigger not connectedly, the signal receiving end of the responsive coupler circuit of AC power overvoltage; The delay trigger circuit S trigger end of break-make is contactless load switch R-S trigger is electrically connected to the unidirectional conduction device that obtains the load current signal circuit turn-on with one, its output terminal and the contactless load switch control utmost point, point touch automatic point in the starting switch circuit and touch the starting switch control end and be electrically connected, and its discharge end and power end are electrically connected with the start trigger circuit of emergency protection schmitt trigger; Emergency protection schmitt trigger trigger end is electrically connected with the switch terminals of overcurrent, overvoltage fault level maintained switch, its discharge end is electrically connected with indicating fault, warning circuit, its output terminal to break-make contactless starting switch, the starting schmitt trigger the unidirectional conducting of trigger circuit end, be electrically connected with the control end of overcurrent, overvoltage fault level maintained switch; Break-make contactless starting switch schmitt trigger output terminal is electrically connected with the control utmost point of contactless starting switch; Manually an end of backup circuit breaker circuit is connected with the output terminal of three terminal regulator in the DC control supply, and the other end is electrically connected with the control utmost point of contactless load switch; In the above-mentioned controller, the status indicator lamp that is electrically connected with DC control supply, contactless starting and the load switch control utmost point, the responsive coupler circuit of AC power overvoltage, manual backup circuit breaker circuit is respectively arranged.

2, controller according to claim 1, it is characterized in that: when the signal generation of magnetic coupler is held in the horizontal pipe that is positioned at flow media, medium flows or do not have medium, one end sealing magnetic links, and pipeline section in the medium baffle plate of a cylindrical location fulcrum, the oblique slightly media flow direction ground overwrite media baffle plate box is being arranged near this end place, the medium baffle plate along the through hole that has two ends with the diaphragm seal sealing in the fulcrum of cylindrical location; The two side of baffle plate box respectively has an anti-long-pending thing of not only having located medium baffle plate fulcrum but also having made it flexible spacing rotation to stop up support; The magnetosensitive device parts that end takes place the magnetic coupler signal rationally are fixed in medium baffle plate box one outside; Adding one in case of necessity between medium baffle plate and locating support or sidewall rolls up or torsionspring the plane snail of medium baffle plate return.

3, controller according to claim 1 is characterized in that: have one in overcurrent, the overvoltage fault level maintained switch from the unidirectional conduction device of emergency protection schmitt trigger output terminal to the conducting of the contactless load switch R-S of break-make trigger S trigger end.

4, controller according to claim 1 is characterized in that: obtain in the load current signal circuit, the current transformer output terminal of an inductive load current, rectification circuit, load level signal circuit are electrically connected in proper order.

5, controller according to claim 1, it is characterized in that: point touch in the starting switch the supercharge pump class automatically point touch starting switch and submersible pump class manually point touch starting switch, all an end is electrically connected with DC control supply, and the other end is electrically connected with the trigger circuit of break-make contactless starting switch, starting schmitt trigger.

6, controller according to claim 1 is characterized in that: break-make contactless starting switch in the trigger circuit of starting schmitt trigger, respectively has one to touch the charging paths that starting switch is electrically connected with trigger circuit parallel connections and with point.

7, controller according to claim 1, it is characterized in that: two input ends that end takes place the responsive coupler circuit signal of AC power overvoltage are electrically connected with the input and output side of DC control supply three terminal regulator respectively, and the trigger pip circuit of its signal receiving end is electrically connected to the unidirectional conducting of the delay trigger circuit of the contactless load switch R-S of break-make trigger.