CN110454352A - A kind of straight line motor drive type plunger pump - Google Patents

Abstract

The invention discloses a kind of straight line motor drive type plunger pumps, by Linear motor-driven plunger pump, and by the characteristics of motion of control linear motor, carry out the characteristics of motion of control assembly, the shortcomings that overcome current plunger pump, plays the advantage of plunger pump to the maximum extent.

Description

A kind of straight line motor drive type plunger pump

Technical field

The present invention relates to plunger pump technique fields, and in particular to a kind of straight line motor drive type plunger pump.

Background technique

Traditional plunger pump generally passes through crank link mechanism and transports the linear reciprocation that the rotary motion of prime mover becomes plungerIt is dynamic, make that liquid is discontinuously inhaled into pumping cylinder and high pressure discharge line achievees the purpose that convey liquid.This revolution driving formula plungerPump has the following problems: traditional revolution driving plunger pump intermediate transfer link is more, and fretting wear is big, and system effectiveness is low；StructureComplexity, manufacture difficulty of processing is big, and at high cost, easily worn part is more, and the probability to break down is big, and maintenance is inconvenient；Plunger speedDegree amplitude of variation is big, and plunger pump flow oscillation is big, and discharge pressure is unstable；It is limited by conventional crankshafts connecting rods power end structure, it is difficultTo realize the job requirements of long stroke, low jig frequency, huge discharge；Structure is complicated, fretting wear is big, pressure oscillation is big, causes rapid wearThe part service life is low, and vibrating noise is serious when operating.

Summary of the invention

The purpose of the present invention overcomes the deficiencies of the prior art and provide a kind of straight line motor drive type plunger pump, passes through straight lineMotor driven plunger pump, and by the characteristics of motion of control linear motor, carry out the characteristics of motion of control assembly, to overcome at presentThe shortcomings that plunger pump, plays the advantage of plunger pump to the maximum extent.

The purpose of the present invention is what is reached by following technical measures: a kind of straight line motor drive type plunger pump, including straightLine motor and fluid end assembly, the linear motor are connect with fluid end assembly, and fluid end assembly includes plunger, clack box, upper valveBody and lower valve body are provided with plunger hole, inlet hole and tap on the clack box, and the plunger is located in plunger hole, the upper valveBody is seal-installed in the tap, and in the inlet hole, Linear motor-driven plunger exists for the lower valve body sealing installationStraight reciprocating motion is done in clack box plunger hole, the linear motor is connect by connecting assembly with fluid end assembly piston.

Further, the connecting assembly includes plunger connector, support rod and mover connector, and the one of the support rodEnd is connect with plunger connector, and the other end of the support rod is connect with mover connector, the other end of the plunger connectorIt is connect with plunger, the other end of mover connector and the mover of linear motor connect.

Further, the linear motor is single-acting linear motor.

Further, the clack box is single cylinder combined type clack box or multi-cylinder clack box.

Further, the single cylinder Combined valve case includes two cylinder combined type clack boxes, three cylinder combined type clack boxes, the combination of four cylindersFormula clack box, five cylinder combined type clack boxes, six cylinder combined type clack boxes and seven cylinder combined type clack boxes, each of described single cylinder combined type clack boxPlunger hole, inlet hole and tap are provided on cylinder, the plunger is located in plunger hole, and the upper valve body is seal-installed on the rowIn portalling, in the lower valve body sealing installation and the inlet hole.

Further, the multi-cylinder clack box includes two cylinder valve casees, three cylinder valve casees, four cylinder valve casees, five cylinder valve casees, six cylinder valve caseesWith seven cylinder valve casees, plunger hole, inlet hole and tap are provided on each cylinder of the multi-cylinder clack box, the plunger is located at plunger holeIn, the upper valve body is seal-installed in the tap, in the lower valve body sealing installation and the inlet hole.

Compared with prior art, the beneficial effects of the present invention are: solving the problems, such as traditional plunger pump, linear motor can be withElectric energy is converted into the mechanical energy of linear motion, eliminates intermediate transfer link, fretting wear reduces, and system effectiveness is high,Movement simple with structure, contactless, low noise, maintenance convenience, high reliablity, the service life is long, is able to satisfy long stroke, low punchingThe advantages that secondary, huge discharge job requirements.

It elaborates with reference to the accompanying drawings and detailed description to the present invention.

Detailed description of the invention

Fig. 1 is fluid end assembly structure schematic diagram of the present invention；

Fig. 2 is single-acting Linear motor-driven plunger pump structural schematic diagram of the present invention；

Fig. 3 is five cylinder combined type clack box combining form structural schematic diagrams in implementation column 1 of the present invention；

Fig. 4 is five cylinder valve case combining form structural schematic diagrams in implementation column 1 of the present invention；

Fig. 5 is double acting Linear motor-driven plunger pump structural schematic diagram of the present invention；

Fig. 6 is five cylinder valve case combining form structural schematic diagrams in implementation column 2 of the present invention；

Fig. 7 is five cylinder combined type clack box combining form structural schematic diagrams in implementation column 2 of the present invention；

Fig. 8 is that single action plunger pump of the present invention drives two fluid end assembly structure schematic diagrames；

Fig. 9 is five cylinder combined type clack box combining form structural schematic diagrams in implementation column 5 of the present invention；

Figure 10 is five cylinder valve case combining form structural schematic diagrams in implementation column 6 of the present invention

Wherein, 1, single-acting linear motor, 2, plunger, 3, clack box, 31, single cylinder combined type clack box, 32, multi-cylinder clack box, 33,Tap, 34, inlet hole, 35, plunger hole, 4, upper valve body, 5, lower valve body, 6, plunger connector, 7, support rod, 8, mover connectionPart, 9, double acting linear motor.

Specific embodiment

As shown in Fig. 1 to 10, a kind of straight line motor drive type plunger pump, including linear motor and fluid end assembly, it is describedLinear motor is single-acting linear motor 1 or double acting linear motor 9, and the linear motor is connect with fluid end assembly, fluid powerEnd assembly includes plunger 2, clack box 3, upper valve body 4 and lower valve body 5, and the clack box 3 is single cylinder combined type clack box 31 or multi-cylinder clack box32.The single cylinder combined type clack box 31 includes two cylinder combined type clack boxes, three cylinder combined type clack boxes, four cylinder combined type clack boxes, five cylindersCombined type clack box, six cylinder combined type clack boxes and seven cylinder combined type clack boxes.The multi-cylinder clack box 32 includes two cylinder valve casees, three cylinder valvesCase, four cylinder valve casees, five cylinder valve casees, six cylinder valve casees and seven cylinder valve casees.Plunger hole 35, sucking are provided on each cylinder of the clack box 3Hole 34 and tap 33, the plunger 2 are located in plunger hole 35, and the upper valve body 4 is seal-installed in the tap 33, instituteIt states in the sealing of lower valve body 5 installation and the inlet hole 34.It is past that Linear motor-driven plunger 2 does straight line in 3 plunger hole 35 of clack boxMultiple movement realizes pumpdown to realize the sucking and discharge of liquid.Structure is simple, and maintenance is convenient, with conventional crankshafts, evenBar plunger for crosshead pump is compared, Linear motor-driven plunger pump, eliminates and the centre that rotary motion is converted into linear motion is turnedIt changes planes structure, overall structure greatly simplifies, saved cost, reduced volume, keeps plunger pump maintenance more convenient.Transmission is rigidDegree is big, directly drives, because of the flexible deformation of intermediate transmission link, fretting wear and reversed when avoiding starting, speed change and commutationHysteresis caused by gap substantially increases its transmission stiffness；Stroke length is unrestricted, is driven using linear motor, columnPlug stroke, which can according to need, is arranged long stroke, huge discharge, low spurt and high pressure, it can be achieved that reciprocating pump, greatly improves itThe service life of clack box, plunger, valve and sealing element；Fastly, due to no intermediate transmission link, there is no centres for high-efficient, responseThe influence of the inertia and resistance of transmission mechanism, eliminates energy loss when mechanical friction, improves transmission efficiency, straight line electricMachine direct-drive reaction speed is fast, high sensitivity, and trackability is good, and accuracy is high；The mechanical friction of component is eliminated, when movingNoise substantially reduces, and improves the big status of existing equipment operating noise；Can more parallel connections, do not interfere with each other, more linear motor worksWhen making, gross thrust is equal to the sum of each motor thrust, does not interfere with each other, and is also not present more and the used time laod unbalance etc. occurs and asksTopic, assembly flexibility ratio is big, can satisfy different operating conditions, different installation requirements.

The connection type of the linear motor and fluid end assembly can substantially be divided into following two: the mover of linear motorIt is directly connect with the plunger 2 in fluid end assembly or the mover of linear motor passes through the plunger in connecting assembly and fluid end assembly2 connections.

The connecting assembly includes plunger connector 6, support rod 7 and mover connector 8, one end of the support rod 7 withPlunger connector 6 connects, and the other end of the support rod 7 is connect with mover connector 8, the other end of the plunger connector 6It is connect with plunger 2, the other end of mover connector 8 is connect with linear motor.

The single-acting linear motor 1, double acting linear motor 9, single cylinder combined type clack box 31 and multi-cylinder clack box 32 combineForm different straight line motor drive type plunger pump implementation columns.

Implementation column 1

Straight line motor drive type plunger pump includes single-acting linear motor 1, plunger 2, multi-cylinder clack box 32, upper valve body 4, lower valveBody 5,1 mover of single-acting linear motor are directly connected to the plunger 2, and the mover of each linear motor is operated alone onePlunger 2, this implementation column can be combined using 2-7 linear motor, the 3 cylinder number of clack box and straight-line electric of the multi-cylinder clack box 32Machine number is identical.

Implementation column 2

Straight line motor drive type plunger pump includes single-acting linear motor 1, plunger 2, single cylinder combined type clack box 31, upper valve body4, lower valve body 5, the linear motor are directly connected to the plunger 2, and a plunger is operated alone in the mover of each linear motor2, this implementation column can be combined using 2-7 single-acting linear motor 1 according to demand, the clack box of single cylinder combined type clack box 313 numbers are identical as 1 number of single-acting linear motor.

Implementation column 3

Straight line motor drive type plunger pump includes double acting linear motor 9, plunger 2, single cylinder combined type clack box 31, upper valve body4, lower valve body 5, the mover left and right ends of the double acting linear motor 9 are directly connected to a plunger 2 respectively, and each double acting is straightPlunger 2 at left and right sides of 9 driven of line motor, this implementation column can be carried out using 1-4 double acting linear motor 9 according to demandCombination, 3 numbers of clack box of single cylinder combined type clack box 31 are several twice of double acting linear motor 9.

Implementation column 4

Straight line motor drive type plunger pump includes double acting linear motor 9, plunger 2, multi-cylinder clack box 32, upper valve body 4, lower valveBody 5, the mover left and right ends of the double acting linear motor 9 are directly connected to a plunger 2, each double acting linear motor respectivelyPlunger 2 at left and right sides of 9 drivens, this implementation column can be combined using 1-4 double acting linear motor 9 according to demand,The number of clack box 3 of multi-cylinder clack box 32 is several twice of double acting linear motor 9.

Implementation column 5

Straight line motor drive type plunger pump includes single-acting linear motor 1, plunger 2, multi-cylinder clack box 32, upper valve body 4, lower valveThe mover of body 5, the single-acting linear motor 1 is connect by connecting assembly with the plunger 2 in fluid end assembly, and the connection is totalPlunger connector 6 in each side connects a plunger 2, mover connector 8 and single-acting in the connecting assemblyThe connection of 1 mover of linear motor is moved back and forth by single-acting linear motor 1 and is drivingly connected assembly side-to-side movement, and then realized and hand overFor driving left and right sides plunger 2, this implementation column can be combined using 1-7 single-acting linear motor 1 according to demand, multi-cylinderThe number of clack box 3 of clack box 32 is several twice of single-acting linear motor 1.

Implementation column 6

Straight line motor drive type plunger pump includes single-acting linear motor 1, plunger 2, single cylinder combined type clack box 31, upper valve body4, lower valve body 5,1 mover of single-acting linear motor are connect by connecting assembly with the plunger 2 in fluid end assembly, the companyIt connects the plunger connector 6 in assembly and each side connects a plunger 2, the mover connector 8 in the connecting assembly and listThe connection of 1 mover of acting linear motor, is moved back and forth by single-acting linear motor 1 and is drivingly connected assembly side-to-side movement, Jin ErshiPlunger 2 at left and right sides of existing driven, this implementation column can be combined using 1-7 single-acting linear motor 1 according to demand,3 numbers of clack box of single cylinder combined type clack box 31 are several twice of double acting linear motor 9.

The linear motor includes but is not limited to: DC linear electric motor, linear AC motor, linear induction motor, straight lineSynchronous motor, linear stepping motor.

It should be understood by those skilled in the art that overall technology of the invention is not restricted to the described embodiments, above-mentioned realityIt applies and is merely illustrated the principles of the invention described in example and specification, without departing from the spirit and scope of the present invention, thisInvention will also have various changes and improvements, and these changes and improvements all fall within the protetion scope of the claimed invention.The present invention wantsProtection scope is asked to be defined by the appending claims and its equivalent thereof.

Claims (6)

1. a kind of straight line motor drive type plunger pump, it is characterised in that: including linear motor and fluid end assembly, the straight-line electricMachine is connect with fluid end assembly, and fluid end assembly includes plunger, clack box, upper valve body and lower valve body, is provided with plunger on the clack boxHole, inlet hole and tap, the plunger are located in plunger hole, and the upper valve body is seal-installed in the tap, describedWith in the inlet hole, Linear motor-driven plunger does straight reciprocating motion, institute in clack box plunger hole for lower valve body sealing installationLinear motor is stated to connect by connecting assembly with fluid end assembly piston.

2. straight line motor drive type plunger pump according to claim 1, it is characterised in that: the connecting assembly includes plungerOne end of connector, support rod and mover connector, the support rod is connect with plunger connector, the other end of the support rodIt is connect with mover connector, the other end of the plunger connector is connect with plunger, the other end and straight-line electric of mover connectorThe mover of machine connects.

3. straight line motor drive type plunger pump according to claim 1, it is characterised in that: the linear motor is single-actingLinear motor.

4. straight line motor drive type plunger pump according to claim 1, it is characterised in that: the clack box is single cylinder combined typeClack box or multi-cylinder clack box.

5. straight line motor drive type plunger pump according to claim 1, it is characterised in that: the single cylinder Combined valve luggageInclude two cylinder combined type clack boxes, three cylinder combined type clack boxes, four cylinder combined type clack boxes, five cylinder combined type clack boxes, six cylinder combined type clack boxesWith seven cylinder combined type clack boxes, plunger hole, inlet hole and tap, the column are provided on each cylinder of the single cylinder combined type clack boxPlug is located in plunger hole, and the upper valve body is seal-installed in the tap, the lower valve body sealing installation and the suckingIn hole.

6. straight line motor drive type plunger pump according to claim 5, it is characterised in that: the multi-cylinder clack box includes two cylindersClack box, three cylinder valve casees, four cylinder valve casees, five cylinder valve casees, six cylinder valve casees and seven cylinder valve casees are provided on each cylinder of the multi-cylinder clack boxPlunger hole, inlet hole and tap, the plunger are located in plunger hole, and the upper valve body is seal-installed in the tap,In the lower valve body sealing installation and the inlet hole.