CN2249985Y - Energy saving protective switchs for weaving apparatus - Google Patents

Abstract

The utility model relates to an energy saving protective switch for a weaving machine, which is mainly composed of a bidirectional thyristor, a photoelectric coupler, a mutual inductor, a switch, a resistor, a capacitor, a diode and a transistor, etc. The utility model is sealed in a switch box, is arranged on a clutch handle base of the weaving machine, and then is respectively connected with three-phase alternating-current power supply and an electric motor through wire connecting terminals. The utility model has reasonable design and easy fabrication, can cut the electricity to protect the weaving machine and can save electric power, which is used and arranged in the weaving machine.

Description

Weaving loom electricity-saving protection switch

The utility model is a kind of weaving loom private section electric protective circuit breaker, belongs to the electronic switch field.Homemade 1511; 1515; the weaving loom of models such as K611 is by the unit transmission; when loom in disconnected footpath crapand and during hesitation motor still do no-load running; the waste electric energy; for can be in loom disconnected footpath crapand and also stall simultaneously of motor during hesitation; the bidirectional triode thyristor battery-conserving switch of CN87208232 patent disclosure can be eliminated the problem of empty load of motor operation; power savings is preferably arranged; its operation principle mainly is to utilize one of the clutch handle control of loom not have the lock uni-directional push-button switch; three groups of contact switchs in this switch are controlled three controllable silicons more respectively; utilize the break-make of silicon controlled break-make control motor power; solved the problem of empty load of motor operation; but because the lock of the nothing in this patent uni-directional push-button switch is difficult to make three groups of contact switchs break-make simultaneously; even can damage because of loose contact makes controllable silicon, do not possess the open phase protection effect simultaneously yet.

The purpose of this utility model is in order to overcome above-mentioned weak point of the prior art, designs a kind of weaving loom electricity-saving protection switch that all can make the motor stall during when disconnected footpath crapand unloaded with in the power supply phase failure.

Technical measures of the present utility model are to install an electricity-saving protection switch between the motor of three-phase alternating-current supply and weaving loom additional; three input terminal X1-X3 of this switch connect the three-phase alternating-current supply of 38DV; three lead-out terminal X4-X6 connect motor; this switch is by step-down transformer T1; current transformer T2-T4; bidirectional triode thyristor VS1 and VS2; photoelectrical coupler BC1 and BC2; triode V1-V4; diode D1-D6; resistance R 1-R11; capacitor C 1-C6; bridge rectifier U1 and U2; mains switch K1; no lock-switch K2 and K3; binding post X1-X6 forms; its annexation is: between 1 pin of elementary X3 of being connected on of current transformer T2 and VS1; T3 is elementary to be connected between 1 pin of X2 and VS2; T4 is elementary to be connected between X1 and the X4; 2 pin of VS1 meet X6; 2 pin of VS2 meet X5; step-down transformer T1 elementary be connected between X2 and the X3 after K1 and K2 connect; two secondary inputs that meet U1 and U2 respectively of T1; the positive output termination C5 of U1 and 1 pin of VS1; the other end ground connection of the negative output terminal of U1 and C5; the positive output termination C6 of U2 and 1 pin of VS2; the U2 negative output termination C6 other end; T2 time level connects the D2 positive pole; the D2 negative pole meets D1 negative pole and R1; C1; T3 time level connects the D4 positive pole; the D4 negative pole meets D3 negative pole and R2; C2; T4 time level connects the D6 positive pole; the D6 negative pole meets negative level of D5 and R3; C3; the other end ground connection of T2-T4 level; the other end ground connection of R1-R3 and C1-C3; D1; the positive pole of D3 and D5 meets V3 base stage and R4; 1 pin of another termination of R4 VS1; the V3 emitter connects the V4 base stage; the V4 grounded emitter; V3 collector electrode and V4 collector electrode connect the negative pole of C4 and BC2 light-emitting diode; ground connection after the C4 other end is connected with the normally-closed contact of K3; the positive pole of BC2 light-emitting diode connects the negative pole of BC1 light-emitting diode; the positive pole of BC1 light-emitting diode and 1 pin that meets VS1 after R5 connects; the BC1 emitter connects R7 and V1 base stage; BC1 collector electrode and 1 pin that meets VS1 after R6 connects; V1 emitter and R7 other end ground connection; V1 collector electrode and the control utmost point 3 pin that meet VS1 after R8 connects; BC2 collector electrode and 1 pin that meets VS2 after R9 connects; the BC2 emitter connects R10 and V2 base stage; the R10 other end and V2 emitter connect the negative output terminal of bridge rectifier U2, V2 collector electrode and the control utmost point 3 pin that meet VS2 after R11 connects.

Accompanying drawing is the circuit diagram of this weaving loom electricity-saving protection switch.

BC1 in the accompanying drawing and BC2 select the photoelectrical coupler of models such as 4N25 or 4N27 for use, withstand voltage between three groups of coils of transformer T1 should be greater than 2000V, the primary coil of instrument transformer T2-T4 uses φ 1 enamelled wire around 7 circles, secondary coil with 0.06 Qi envelope curve around 600 circles, V1-V4 selects the triode of models such as 3DA87 for use, D1-D6 selects the diode of models such as 1N4001 for use, and VS1 and VS2 select the bidirectional triode thyristor of models such as BTA16-600B for use.Its annexation is described identical with technical measures.Get R1=R2=R3, choose reasonable R4, making the V3 base voltage is 1.4V, the voltage of C1-C3 is equal 1.4-2.0V, X1-X3 connects three phase mains, X4-X6 connects the weaving loom motor, whole switch is fixed on the clutch handle seat of weaving loom, and K2 and K3 are controlled by clutch handle, during operate as normal, energized K switch 1, K1-K3 is all connected, and the U1 output voltage charges to C4 through R5 and BC1-BC2, makes the photodiode of BC1 and BC2 luminous, the triode conducting of photoelectrical coupler, make V1 and V2 conducting, trigger two bidirectional triode thyristor VS1 and VS2 conducting respectively, the motor M running, this moment, three instrument transformer T2-T4 elementaryly had electric current to pass through, the secondary 2V voltage of having an appointment is through D2, D4, after the D6 rectification, at C1, C2, the last voltage that is slightly larger than 1.4V that forms of C3 makes D1, D3, D5 carries and ends, the U1 output voltage has 1.4V voltage in the V3 base stage after the R4 step-down, make V3 and V4 conducting and keep motor rotation.When a certain phase phase failure of power supply; during as the X1 phase shortage; then T4 does not have secondary voltage; D5 conducting, V3 base voltage make V3 and V4 be become by conducting and end because of being lower than 1.4V through D5 and R3 ground connection; and C4 has been full of electric charge; light-emitting diode among BC1 and the BC2 is ended, thereby controllable silicon VS1 and VS2 are ended, motor stall and being protected.When weaving loom cracked ends crapand, the clutch operating on the weaving loom makes nothing lock electricity close K2 and K3 action, and K2 moves the elementary and dump of T1 is made electronic stall, and the K3 action makes the C4 discharge ready for work next time.

The utlity model has reasonable in designly, easily manufactured, both played the open phase protection effect, play the economize on electricity effect again, be particularly suitable on weaving loom, installing and using.

Claims (2)

1; a kind of weaving loom electricity-saving protection switch; it is characterized in that this switch is by step-down transformer T1; current transformer T2-T4; bidirectional triode thyristor VS1 and VS2; photoelectricity coupling electrical equipment BC1 and BC2; triode V1-V4; diode D1-D6; resistance R 1-R11; capacitor C 1-C6; bridge rectifier U1 and U2; mains switch K1; no lock-switch K2 and K3; binding post X1-X6 forms; its annexation is: between 1 pin of elementary X3 of being connected on of current transformer T2 and VS1; T3 is elementary to be connected between 1 pin of X2 and VS2; T4 is elementary to be connected between X1 and the X4; 2 pin of VS1 meet X6; 2 pin of VS2 meet X5; step-down transformer T1 elementary be connected between X2 and the X3 after K1 and K2 connect; two secondary inputs that meet U1 and U2 respectively of T1; the positive output termination C5 of U1 and 1 pin of VS1; the other end ground connection of the negative output terminal of U1 and C5; the positive output termination C6 of U2 and 1 pin of VS2; the U2 negative output termination C6 other end; T2 time level connects the D2 positive pole; the D2 negative pole meets D1 negative pole and R1; C1; T3 time level connects the D4 positive pole; the D4 negative pole meets D3 negative pole and R2; C2; T4 time level connects the D6 positive pole; the D6 negative pole meets negative level of D5 and R3; C3; the other end ground connection of T2-T4 level; the other end ground connection of R1-R3 and C1-C3; D1; the positive pole of D3 and D5 meets V3 base stage and R4; 1 pin of another termination of R4 VS1; the V3 emitter connects the V4 base stage; the V4 grounded emitter; V3 collector electrode and V4 collector electrode connect the negative pole of C4 and BC2 light-emitting diode; ground connection after the C4 other end is connected with the normally-closed contact of K3; the positive pole of BC2 light-emitting diode connects the negative pole of BC1 light-emitting diode; the positive pole of BC1 light-emitting diode and 1 pin that meets VS1 after R5 connects; the BC1 emitter connects R7 and V1 base stage; BC1 collector electrode and 1 pin that meets VS1 after R6 connects; V1 emitter and R7 other end ground connection; V1 collector electrode and the control utmost point 3 pin that meet VS1 after R8 connects; BC2 collector electrode and 1 pin that meets VS2 after R9 connects; the BC2 emitter connects R10 and V2 base stage; the R10 other end and V2 emitter connect the negative output terminal of bridge rectifier U2, V2 collector electrode and the control utmost point 3 pin that meet VS2 after R11 connects.

2, weaving loom electricity-saving protection switch as claimed in claim 1; it is characterized in that BC1 and BC2 select the photoelectrical coupler of models such as 4N25 or 4N27 for use; withstand voltage between three groups of coils of transformer T1 should be greater than 2000V; the primary coil of instrument transformer T2-T4 uses φ 1 enamelled wire around 7 circles; secondary coil uses φ 0.06 enamelled wire around 600 circles; V1-V4 selects the triode of models such as 3DA87 for use, and D1-D6 selects the diode of models such as 1N4001 for use, and VS1 and VS2 select the bidirectional triode thyristor of models such as BTA16-600B for use.

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