CN208226824U - Water injecting pump energy-saving threephase asynchronous - Google Patents

Abstract

A kind of water injecting pump energy-saving three-phase asynchronous motor, it is characterized in that: three-phase windings are by three bridge arms in parallel mutually connected with series connection six phase mixed phase double star of phase composition, and both the windings in series of this phase was got up by three capacitors, the winding parallel of mixed phase is got up again, forms six phase mixed phase double star wiring and capacitor hinge connection scheme.It is compared with the same power of YE3 series, with pole count motor, integrated power-saving is up to 15% or more.

Description

Water injecting pump energy-saving threephase asynchronous

Technical field

The utility model belongs to motor technology field, and in particular to a kind of water injecting pump that suitable oil-field flooding station uses is special Use energy-saving three-phase asynchronous motor.

Background technique

The mating threephase asynchronous features of plunger type water injection pump used in oil-field flooding station be power be 110~ 185kW, load is more steady, and load only has minor fluctuations variation, long operational time, typically continuous 24 small luck when operation Row, so matched motor generally all selects efficient YE3 Series Motors.In flood pattern operation, most of motor are all It is to be run under power frequency, YVP frequency conversion series is generally only used as supplement operation when water-injection station pressure regulation.The series of high efficiency motor such as YE3 Although its rated efficiency, power factor are all very high, it must be run under 90%~100% High Load Rate, when rate of load condensate is lower than Its efficiency and power factor decline 3% and 0.15 respectively when 90%；When rate of load condensate be lower than 70% when its efficiency and power factor respectively under Drop 6% and 0.29, rate of load condensate can not embody the excellent performance of high efficiency series motor when relatively low.In actual operation, due to considering The requirement of water injection rate and load variations and safety factor, general induction-motor load rate do not reach YE3 series all 70% or so The requirement of motor maximum energy-saving rate of load condensate, thus while it is equipped with high efficiency motor, but its actual motion is not in best efficiency point, it is long Phase operation causes that separate unit power consumption is big, the not high problem of unit efficiency.

Summary of the invention

The purpose of the utility model is to provide a kind of water injecting pump energy-savings three to match with water injection electric operating condition Phase asynchronous motor improves the operational efficiency of the motor, reduces its electric energy loss.

In order to realize the purpose of this utility model, following technical proposals are taken: a kind of energy-saving three-phase asynchronous electricity of water injecting pump Motivation, including casing, stator, rotor and three-phase windings, it is characterized in that: the three-phase windings are by phase main winding in parallelWith series connection phase auxiliary windingAccording toWith、With、WithThree bridge arms of corresponding composition six phase mixed phase double stars connection, and by three capacitors (C1, C3, C2) both this PhaseWith、With、WithWindings in series is got up, and mixed phaseWith、 With、WithWinding parallel gets up.

The utility model uses six phase winding mixed phase double star (2Y) wiring power-up and holds hinge according to electromagnetic balance matching principle The technological means of chain link realizes the conversion of " more than needed " between magnetic field energy and electric field energy.When the load factor of water filling pump motor exists 70% or so, since electromagnetic balance condition of the motor in rated load operation, electric field energy and magnetic field energy have been broken in load decline Best match state be disturbed, the decline of electric field energy demand, magnetic field energy just seems excessive and wastes, at this time can will be more Residual magnetism field energy is stored in the form of electric field energy capacitor.Conversely, when load factor rises, in order to meet loading demand, At this time the magnetic field of the storage electric field energy of capacitor and motor can be can be carried out into synthesis, reach electromagnetic balance again, to reduce The input current that motor is absorbed from power grid, makes the operational efficiency of motor, and power factor is improved, and reaches saving electricity The purpose of energy.

Detailed description of the invention

Fig. 1 is winding mixed phase " 2Y " wiring diagram of the utility model.

Specific embodiment

Iron loss in generator loss is, copper loss isIf motor current I has dropped, Iron loss and copper loss all can be with declining together.So trying every possible means condenser current to be input to inside motor winding, make capacitor Device electric current is overlapped mutually with winding current, to reduce the electric current that winding is inputted from power grid, can be only achieved energy saving purpose.We By constantly studying and repetition test, a splendid solution is had found, following six phase windings mixed phase double stars have been invented (2Y) wiring and capacitor hinge connect new technology:

1, each phase of U, V, W three-phase windings of threephase asynchronous is divided into phase in parallel (claiming main winding) and series connection phase (claiming auxiliary winding), amount toAmount to six phase category groups.

2, as shown in Figure 1；Respectively willWith、With、WithForm six phase mixed phase double stars Three bridge arms of (2Y) connection.

3, hinge capacitor C1, C3, C2 both this phase (i.e. same phase, such asWith、With、 With) windings in series gets up, and non-phase (i.e. mixed phase, such asWith、With、With) Winding parallel gets up, it is this not only gone here and there but also and doubly-linked connection technology can realize compound (inside and outside simultaneously) compensating action.

The SBZ315L-4 that six phase winding mixed phase double star (2Y) wiring and capacitor hinge connection new technology are researched and developed by my company Motor verifying, has reached good result, compares with the same power of YE3 series, with pole count motor, and active economize on electricity is up to 8% or more, nothing Function economize on electricity is up to 60% or more, and integrated power-saving is up to 15% or more.

Claims (1)

1. a kind of water injecting pump energy-saving three-phase asynchronous motor, including casing, stator, rotor and three-phase windings, it is characterized in that: institute Three-phase windings are stated by phase main winding in parallelWith series connection phase auxiliary windingAccording toWith、With、WithThree bridge arms of corresponding composition six phase mixed phase double stars connection, and by three Capacitor (C1, C3, C2) is both this phaseWith、With、WithWindings in series is got up, and mixed Close phaseWith、With、WithWinding parallel gets up.