CN204206035U - Hydraulic turbine duplicate supply protects hand, electric dual-purpose speed regulating device automatically - Google Patents

Abstract

The utility model discloses a kind of hydraulic turbine duplicate supply and automatically protect hand, electric dual-purpose speed regulating device; be made up of major loop and control loop; major loop by power generating source loop, net electric electric power loop and rotating loop forms, control loop by rotating control loop, net electric power control loop, power generating source control loop and protection and shut down loop and form.Benefit of the present utility model uses duplicate supply, has electricity when guaranteeing start, orderly closedown, accidental shutdown, increases emergency stop button, during emergency stop valve trip, closes the hydraulic turbine by the make contact interlock of exit relay KA.

Description

Hydraulic turbine duplicate supply protects hand, electric dual-purpose speed regulating device automatically

Technical field

The utility model relates to water wheels tractor driver, electric dual-purpose speed regulating device.

Background technology

Present medium waterpower generator station hydrogovernor aspect is much with in one's hands, electric dual-purpose speed regulating device; present water wheels tractor driver, electric dual-purpose speed regulating device are made up of major loop and control loop; major loop is as shown in Fig. 1 in Figure of description; in FIG; major loop is made up of power generating source loop and rotating loop, and major loop comprises power protection fuse FU _a, FU _b, FU _c, positive contactor KM ₁main contact, reversion contactor KM ₂main contact, thermal relay FR main contact and adjustable-speed motor M form; Control loop is as shown in Fig. 2 in Figure of description, and in fig. 2, control loop comprises speed accelerating circuits and deceleration loop, and speed accelerating circuits forms rotating control loop together with deceleration loop, and speed accelerating circuits is by Generator end power supply A phase X ₁successively through overcurrent fuse FU ₁, speed-regulating switch SA _i-II, reversion contactor KM ₂dynamic circuit breaker auxiliary contact, positive contactor KM ₁actuating coil, speed regulator speedup limit switch SQ ₁, thermal relay FR dynamic circuit breaker auxiliary contact and neutral line N; Deceleration loop is by Generator end power supply A phase X ₁successively through overcurrent fuse FU ₁, speed-regulating switch SA _iII-IV, positive contactor KM ₁dynamic circuit breaker auxiliary contact, reversion contactor KM ₂actuating coil, speed regulator deceleration limit switch SQ ₂, thermal relay FR dynamic circuit breaker auxiliary contact and neutral line N; During work, by the operation of speed-regulating switch SA, control the rotating forward of adjustable-speed motor M, reverse, stop, reach the starting up → speedup → application of load → load shedding → deceleration → closedown regulating water turbine set and shut down.

Major defect is generator when not generating electricity, and adjustable-speed motor M does not have power supply, must manually opened speed regulator, and can not link when generator has fault or emergency stop valve trip the closedown hydraulic turbine, still must manual operation, and workload is large, and pressure is large.

Utility model content

The purpose of this utility model overcomes the deficiencies in the prior art, provides a kind of and adopt the mode of duplicate supply to power and be with the hydraulic turbine duplicate supply of protection automatically automatically to protect hand, electric dual-purpose speed regulating device.

The purpose of this utility model is achieved by following technical solution: a kind of hydraulic turbine duplicate supply protects hand, electric dual-purpose speed regulating device automatically; be made up of major loop and control loop; major loop comprises power generating source loop and rotating loop; control loop comprises rotating control loop, and rotating loop is by positive contactor KM ₁main contact, reversion contactor KM ₂main contact and thermal relay FR form, and rotating loop thermal relay FR output connects with adjustable-speed motor M power input, positive contactor KM ₁main contact and reversion contactor KM ₂main contact input phase sequence is consistent, positive contactor KM ₁main contact and reversion contactor KM ₂connect with thermal relay FR input after any two-phase misphase of main contact output connects; The power supply of rotating control loop is through overcurrent fuse FU ₃rear point two-way, a road is successively through speed-regulating switch SA _i-II, reversion contactor KM ₂dynamic circuit breaker auxiliary contact, positive contactor KM ₁actuating coil, speed regulator speedup limit switch SQ ₁, another road is successively through speed-regulating switch SA _iII-IV, positive contactor KM ₁dynamic circuit breaker auxiliary contact, reversion contactor KM ₂actuating coil, speed regulator deceleration limit switch SQ ₂, speed regulator speedup limit switch SQ ₁output and speed regulator deceleration limit switch SQ ₂output connects with thermal relay FR dynamic circuit breaker auxiliary contact after connecting, and thermal relay FR dynamic circuit breaker auxiliary contact output is connected with mains neutral line N, it is characterized in that: major loop also comprises the electric electric power loop of net, and power generating source loop is by miniature circuit breaker QF ₂with power generating source loop contactor KM ₄main contact forms, and in power generating source loop, generator power supply is successively through miniature circuit breaker QF ₂, power generating source loop contactor KM ₄main contact, nets electric electric power loop by miniature circuit breaker QF ₁with the electric electric power loop contactor KM of net ₃main contact forms, and nets in electric electric power loop and nets power supply successively through miniature circuit breaker QF ₁, net electric electric power loop contactor KM ₃main contact, accesses rotating loop after netting electric electric power loop and the parallel connection of power generating source loop; Control loop also comprises the electric power control loop of net, power generating source control loop and protection and shuts down loop, nets the net electricity power supply L of electric power control loop ₁₁successively through overcurrent fuse FU ₁, outlet breaker QF dynamic circuit breaker auxiliary contact, power generating source loop contactor KM ₄dynamic circuit breaker auxiliary contact, net electric electric power loop contactor KM ₃actuating coil, mains neutral line N, generator power supply X in power generating source control loop ₁₁successively through overcurrent fuse FU ₂, net electric electric power loop contactor KM ₃dynamic circuit breaker auxiliary contact, power generating source loop contactor KM ₄actuating coil, mains neutral line N, the control power supply that loop is shut down in protection takes from duplicate supply A ₁, duplicate supply A ₁successively through overcurrent fuse FU ₃, shut down involution button SB ₄break contact Hou Fen tri-tunnel, the first via and emergency stop button SB ₃make contact connects, the second road and auxiliary relay KA ₁make contact connects, and the 3rd tunnel is connected with accident exit relay KA make contact, accesses auxiliary relay KA after three tunnel parallel connections ₁actuating coil, auxiliary relay KA ₁actuating coil output is connected with mains neutral line N, wherein auxiliary relay KA ₁another group make contact and speed-regulating switch SA _iII-IVin parallel.

Benefit of the present utility model is: 1, use duplicate supply, have electricity when guaranteeing start, orderly closedown, accidental shutdown; 2, emergency stop button is increased; 3, during emergency stop valve trip, the hydraulic turbine is closed by the make contact interlock of exit relay KA.

Accompanying drawing explanation

Fig. 1 is prior art major loop figure;

Fig. 2 is prior art control drawing;

Fig. 3 is the utility model major loop figure;

Fig. 4 is the utility model net electricity power control loop figure;

Fig. 5 is the utility model power generating source control drawing;

Fig. 6 is that control drawing is shut down in the utility model rotating control loop and protection;

In figure: 1, rotating loop; 2, rotating control loop; 3, electric electric power loop is netted; 4, power generating source loop; 5, loop is shut down in protection.

Embodiment

The utility model is described in further detail with reference to the accompanying drawings below.

A kind of hydraulic turbine duplicate supply of the utility model protects hand, electric dual-purpose speed regulating device automatically; be made up of major loop and control loop; major loop is as shown in Fig. 3 in Figure of description; in Fig. 3 major loop by power generating source loop 4, net electric electric power loop 3 and rotating loop 1 forms, control loop by rotating control loop 2, net electric power control loop, power generating source control loop and protection and shut down loop 5 and form.Please read Fig. 3, power generating source loop 4 is by miniature circuit breaker QF ₂with power generating source loop contactor KM ₄main contact forms, and in power generating source loop, generator power supply is successively through miniature circuit breaker QF ₂, power generating source loop contactor KM ₄main contact, nets electric electric power loop 3 by miniature circuit breaker QF ₁with the electric electric power loop contactor KM of net ₃main contact forms, and nets in electric electric power loop and nets power supply successively through miniature circuit breaker QF ₁, net electric electric power loop contactor KM ₃main contact, net electric electric power loop 3 and power generating source loop 4 rear access rotating loop 1 in parallel, rotating loop 1 is by positive contactor KM ₁main contact, reversion contactor KM ₂main contact and thermal relay FR form, and thermal relay FR output connects with adjustable-speed motor M power input, positive contactor KM ₁main contact and reversion contactor KM ₂main contact input phase sequence is consistent, positive contactor KM ₁main contact and reversion contactor KM ₂connect with thermal relay FR input after any two-phase misphase of main contact output connects.Rotating control loop 2 is as shown in Fig. 6 in Figure of description, and adjustable-speed motor M forward and backward control loop is identical with shown in prior art Fig. 1 in figure 6, and the power supply of rotating control loop is through overcurrent fuse FU ₃rear point two-way, a road is successively through speed-regulating switch SA _i-II, reversion contactor KM ₂dynamic circuit breaker auxiliary contact, positive contactor KM ₁actuating coil, speed regulator speedup limit switch SQ ₁, another road is successively through speed-regulating switch SA _iII-IV, positive contactor KM1 dynamic circuit breaker auxiliary contact, reversion contactor KM ₂actuating coil, speed regulator deceleration limit switch SQ ₂, speed regulator speedup limit switch SQ ₁output and speed regulator deceleration limit switch SQ ₂output connects with thermal relay FR dynamic circuit breaker auxiliary contact after connecting, and thermal relay FR dynamic circuit breaker auxiliary contact output connects with mains neutral line N; Net electric power control loop as shown in Fig. 4 in Figure of description, net the net electricity power supply L of electric power control loop ₁₁successively through overcurrent fuse FU ₁, outlet breaker QF dynamic circuit breaker auxiliary contact, power generating source loop contactor KM ₄dynamic circuit breaker auxiliary contact, net electric electric power loop contactor KM ₃actuating coil, mains neutral line N, power generating source control loop as shown in Fig. 5 in Figure of description, generator power supply X in power generating source control loop ₁₁successively through overcurrent fuse FU ₂, net electric electric power loop contactor KM ₃dynamic circuit breaker auxiliary contact, power generating source loop contactor KM ₄actuating coil, mains neutral line N, protection shuts down loop 5 as shown in Fig. 6 in Figure of description, and the control power supply that loop is shut down in protection takes from duplicate supply A ₁, duplicate supply A ₁successively through overcurrent fuse FU ₃, shut down involution button SB ₄break contact Hou Fen tri-tunnel, the first via and emergency stop button SB ₃make contact connects, the second road and auxiliary relay KA ₁make contact connects, and the 3rd road and accident exit relay KA make contact connect, and access auxiliary relay KA after three tunnel parallel connections ₁actuating coil, auxiliary relay KA ₁actuating coil output connects with mains neutral line N, wherein auxiliary relay KA ₁another group make contact and speed-regulating switch SA _iII-IVin parallel.

The utility model contrast prior art, add duplicate supply, emergency shutdown, unit failure tripping operation links, and adjustable-speed motor M reversion is timely closes the hydraulic turbine and shut down, the material of increase is few, uses safely play good effect to water turbine set.

The utility model is in use: 1, generator start before car, outlet breaker QF not yet closes a floodgate, outlet breaker QF dynamic circuit breaker auxiliary contact close, and net electric electric power loop contactor KM ₃obtain electric adhesive, its main contacts closes, and adjustable-speed motor M obtains power supply from electrical network, and by rotating forward, the reverse turn operation of speed-regulating switch SA, voltage and the frequency for the treatment of also generator regulate.2, realize and car after, namely after outlet breaker QF closes, its dynamic circuit breaker auxiliary contact disconnect, net electric electric power loop contactor KM ₃dead electricity discharges, and its dynamic circuit breaker auxiliary contact close, power generating source loop contactor KM ₄obtain electric adhesive, adjustable-speed motor power supply obtains power supply from the machine, and application of load is carried out in speed-regulating switch SA rotating forward operation.3, when the machine breaks down, protection exit relay K A action, outlet breaker QF trips, and its dynamic circuit breaker auxiliary contact close, power generating source loop contactor KM ₄dead electricity discharges, and its dynamic circuit breaker auxiliary contact close, and net electric electric power loop contactor KM ₃obtain electric adhesive, adjustable-speed motor M power supply is switched to electric network source from localpower, meanwhile, and auxiliary relay KA ₁make contact closes, and act on deceleration loop, adjustable-speed motor M reverses, and speed regulator carries out urgent cut out automatically, avoids generating set generation runaway accident.4, when unit has accident not trip, by pressing emergency stop button SB ₃, emergency stop button SB ₃make contact closes, auxiliary relay KA ₁obtain electric suction merga pass auxiliary relay KA ₁make contact self-sustaining, auxiliary relay KA ₁after another group make contact is closed, action is in deceleration loop, and the hydraulic turbine slows down until shut down.

Claims (1)

1. hydraulic turbine duplicate supply protects hand, electric dual-purpose speed regulating device automatically, is made up of major loop and control loop, and major loop comprises power generating source loop and rotating loop, and control loop comprises rotating control loop, and rotating loop is by positive contactor KM ₁main contact, reversion contactor KM ₂main contact and thermal relay FR form, and rotating loop thermal relay FR output connects with adjustable-speed motor M power input, positive contactor KM ₁main contact and reversion contactor KM ₂main contact input phase sequence is consistent, positive contactor KM ₁main contact and reversion contactor KM ₂connect with thermal relay FR input after any two-phase misphase of main contact output connects; The power supply of rotating control loop is through overcurrent fuse FU ₃rear point two-way, a road is successively through speed-regulating switch SA _i-II, reversion contactor KM ₂dynamic circuit breaker auxiliary contact, positive contactor KM ₁actuating coil, speed regulator speedup limit switch SQ ₁, another road is successively through speed-regulating switch SA _iII-IV, positive contactor KM ₁dynamic circuit breaker auxiliary contact, reversion contactor KM ₂actuating coil, speed regulator deceleration limit switch SQ ₂, speed regulator speedup limit switch SQ ₁output and speed regulator deceleration limit switch SQ ₂output connects with thermal relay FR dynamic circuit breaker auxiliary contact after connecting, and thermal relay FR dynamic circuit breaker auxiliary contact output is connected with mains neutral line N, it is characterized in that: major loop also comprises the electric electric power loop of net, and power generating source loop is by miniature circuit breaker QF ₂with power generating source loop contactor KM ₄main contact forms, and in power generating source loop, generator power supply is successively through miniature circuit breaker QF ₂, power generating source loop contactor KM ₄main contact, nets electric electric power loop by miniature circuit breaker QF ₁with the electric electric power loop contactor KM of net ₃main contact forms, and nets in electric electric power loop and nets power supply successively through miniature circuit breaker QF ₁, net electric electric power loop contactor KM ₃main contact, accesses rotating loop after netting electric electric power loop and the parallel connection of power generating source loop; Control loop also comprises the electric power control loop of net, power generating source control loop and protection and shuts down loop, nets the net electricity power supply L of electric power control loop ₁₁successively through overcurrent fuse FU ₁, outlet breaker QF dynamic circuit breaker auxiliary contact, power generating source loop contactor KM ₄dynamic circuit breaker auxiliary contact, net electric electric power loop contactor KM ₃actuating coil, mains neutral line N, generator power supply X in power generating source control loop ₁₁successively through overcurrent fuse FU ₂, net electric electric power loop contactor KM ₃dynamic circuit breaker auxiliary contact, power generating source loop contactor KM ₄actuating coil, mains neutral line N, the control power supply that loop is shut down in protection takes from duplicate supply A ₁, duplicate supply A ₁successively through overcurrent fuse FU ₃, shut down involution button SB ₄break contact Hou Fen tri-tunnel, the first via and emergency stop button SB ₃make contact connects, the second road and auxiliary relay KA ₁make contact connects, and the 3rd tunnel is connected with accident exit relay KA make contact, accesses auxiliary relay KA after three tunnel parallel connections ₁actuating coil, auxiliary relay KA ₁actuating coil output is connected with mains neutral line N, wherein auxiliary relay KA ₁another group make contact and speed-regulating switch SA _iII-IVin parallel.