Squash type bias revolution oil transfer pump, application and using method thereof
Technical field
The present invention relates to oil transfer pump field, be specifically related to squash type bias revolution oil transfer pump, application and using method thereof.
Background technology
Oil transfer pump is a visual plant in oil-gas gathering and transportation system, and the operational efficiency of whole system is had a direct impact by its performance.Oil transfer pump is divided into gear fuel supply pump, diaphragm fuel supply pump, plunger-type fuel delivery pump, duct type oil transfer pump etc..
Pump is used for oil recovery industry, mainly has plunger displacement pump, centrifugal pump and curved bar pump.It seems that from As-Is, value of demand fixed displacement and the little multiplex centrifugal pump of occasion of lift, this occasion its vibration is little, efficiency is high more practical, but under the occasion that value of demand fixed displacement and lift are bigger, adopt plunger displacement pump more, under this occasion, it is bigger than centrifugal pump actual displacement, power consumption is low, and efficiency is high, therefore in discharge capacity more than 50m3The gathering station of/h, uses plunger-type fuel delivery pump more more economical than centrifugal pump.The curved bar efficiency of pump is high, and oil transportation unit consumption is low, therefore outside defeated discharge capacity lower than 20m3The block station of/h, use curved bar pump than centrifugal pump more economical rationally.And the squash type bias revolution oil transfer pump of the present invention, stable working, discharge capacity are big, and good seal performance is thus pressure is big, lift is high, by changing nozzle diameter, pump housing size, have both been suitable for the occasion that the little lift of discharge capacity is low, and have been also adapted to the occasion that the big lift of discharge capacity is high equally.
Developing progressive today rapidly in science and technology, the range of application in carried of crude oil field of the oil transfer pump in crude oil pipeline constantly expands.Different from traditional automobile, railway, inland river, sea transport mode, pipeline transportation, as a kind of new transport mode, has cast aside transport agent, successional can carry out long-distance transportation.In crude oil pipeline conveying, oil transfer pump mainly has: gear fuel supply pump, piston type fuel supply pump, scraper-type oil transfer pump etc., based on gear pump.Gear pump has the advantage of uniqueness in carried of crude oil, but it also has disadvantages that: the gear of gear pump, axle and the pressure imbalance being subject on bearing, radial load is big, limiting the raising of its pressure, therefore gear pump operating pressure is relatively low, and gear pump is mainly used in middle low-pressure system;Gear pump face leakage is big, and therefore volumetric efficiency is relatively low;Gear pump flow pulsation is big, causes pressure fluctuation big, makes pipeline, valve etc. produce vibration, and noise is big.
Summary of the invention
It is an object of the invention to provide a kind of squash type bias revolution oil transfer pump and using method thereof, this oil transfer pump overcomes the shortcoming of said pump, is suitable for multiple workplace, stable, and efficiency is high.
In order to reach above-mentioned purpose, the present invention adopts the following technical scheme that
Squash type bias revolution oil transfer pump, including:
Pump case, is provided with cavity in pump case, pump case is provided with oil transportation entrance and oil transportation outlet;
Being provided with three-apexed rotor in cavity, rotor forms 3 working chambers with pump case, and rotor is enclosed within the eccentric block place of power shaft and rotates increase or the reduction to realize working chamber;Described rotor and bent axle matched in clearance, be installed with fixed gear, be provided with the ring gear coordinated with fixed gear in the middle part of rotor in pump case, ring gear is fixing connects rotor;The ratio of interior ring gear and the number of teeth of fixed gear is more than 1;Described pump case include one annular or Long Circle sidewall, sidewall be respectively provided on two sides with capping, sidewall be step-like with capping engage.
Another kind of scheme is: squash type bias revolution oil transfer pump, including:
Pump case, is provided with cavity in pump case, pump case is provided with oil transportation entrance and oil transportation outlet;
Being provided with three-apexed rotor in cavity, rotor forms 3 working chambers with pump case, and rotor is enclosed within the eccentric block place of power shaft and rotates increase or the reduction to realize working chamber;Described rotor and bent axle matched in clearance, be installed with fixed gear, be provided with the tooth coordinated with fixed gear in the middle part of rotor in pump case;The ratio of interior ring gear and the number of teeth of fixed gear is more than 1;Described pump case include one annular or Long Circle sidewall, sidewall be respectively provided on two sides with capping, sidewall be step-like with capping engage.
Further, eccentric block is cam-like.
Further, described oil transportation entrance and oil transportation outlet are respectively arranged with two, and oil transportation entrance is crisscross arranged with oil transportation outlet, and four mouths are symmetrical arranged up and down.
Further, ring gear is 3:2 with the ratio of the number of teeth of fixed gear, it is achieved motor (power shaft) each rotation, and rotor turns 1/3 week, completes the fuel-displaced process of oil-feed of two working chambers.
Further, described pump case bottom is provided with the fixing seat of vertical direction.
Further, it is provided with end cap between described capping and described power shaft.
Further, described sidewall engages place with described capping and is provided with sealing gasket, is provided with oil duct between described end cap and power shaft, is filled with oils and fats in oil duct.
Further, described power shaft is connected with power set by electrodeless variable-speed motor.
Further, three limits of described rotor are cambered outwards camber line.
Further, the interior angle place of described rotor equipped with telescopic hard sealing strip with seal operation cavity.
Described oil transfer pump is in the application of fire fighting motorcycle.
The using method of oil transfer pump, specifically comprises the following steps that
1) rotor rotates under the drive of power shaft, and by an oil transportation entrance oil suction, the volume of a working chamber increases;
2) rotor continues to rotate, step 1) in the volume of working chamber be gradually reduced, fluid is discharged from oil transportation outlet;
3) oil transfer pump is from step 2) the oil transportation entrance oil suction of oil transportation outlet lower section, the volume of working chamber increases;
4) rotor continues to rotate, step 3) in the volume of working chamber be gradually reduced, fluid is discharged from oil transportation outlet;
5) simultaneously from step 1) and step 3) oil transportation entrance oil suction, repetition step 1)-step 4).
The operation principle of the present invention is: the rotation of rotor is divided into and is rotated rotor driven by power shaft and rotate around power shaft and the gear motion of internal gear and fixed gear completes rotation two parts of rotor.The geometric center of rotor is while revolving round the sun in power shaft center, and rotor itself is again around self geometric center rotation.When rotor rotates, the ring gear centered by rotor center engages with the fixed gear centered by power shaft center, fixed gear and pump case geo-stationary, is fixed on pump case.Rotor and capping divide into not connected three working chamber cylinder body, and the volume being changed three working chambers by the compound motion of rotor has changed work, and namely rotor completes the rotation in a cycle, and pump completes six oil extraction processes of six oil suctions;Power is provided by power shaft, because of ring gear, fixed gear is meshed, ring gear is fixed on rotor, fixed gear and sidewall geo-stationary, the ratio of ring gear and the number of teeth of fixed gear is 3:2, above-mentioned movement relation makes the movement locus of rotor apex like oval, rotor is divided into three chambeies that work alone sidewall, three working chambers each successively complete oil-feed and oil extraction, in Fig. 3, A to G process is the oil-feed oil extraction process of the cavity that in Fig. 4, indication oil transportation entrance starts oil-feed, this process rotor rotation half-turn, therefore the rotating speed of power shaft is 3 times of rotor rotational velocity, so it follows that power shaft turns around, the fuel-displaced process of oil-feed of two cavitys can be completed.
The invention has the beneficial effects as follows:
1) adopting eccentric extrusion structure, axle and bearing pressurized relative equilibrium, strength of gear is less, good airproof performance, can produce bigger pressure.
2) squash type bias revolution oil transfer pump adopts eccentric revolving structure, increases swept volume, and electric machine main shaft turns around and can complete 2 fuel-displaced processes of cavity oil-feed, and efficiency is high;Squash type bias revolution oil transfer pump design compact conformation is reasonable, and the vibration that operates steadily is little, noiselessness.
Accompanying drawing explanation
Fig. 1 is squash type bias revolution oil transfer pump texture edge schematic diagram;
Fig. 2 is squash type bias revolution oil transfer pump structure front schematic view;
Fig. 3 is squash type bias revolution oil transfer pump rotor work process schematic diagram in cavity;
Fig. 4 is squash type bias revolution oil transfer pump inlet/outlet pipe position view;
Fig. 5 is the squash type bias revolution interchangeable inlet/outlet pipe schematic diagram of oil transfer pump.
Wherein: 1--sidewall;2--sealing gasket;3 rotors;Cover before 4;5 bearings;6 rear bearing end caps;7 oil transportation outlets;8 ring gears;9--end cap;10 fixed gears;11 fore bearing end caps;12 power shafts;13 rear seal-covers.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete description.
As it is shown in figure 1, squash type bias revolution oil transfer pump includes: power shaft 12, bearing 5, rotor 3, ring gear 8, fixed gear 10;Front capping 4, rear seal-cover 13, sidewall 1, rotor 3, end cap 9 etc..7 oil-feeds are exported fuel-displaced by oil transportation.By motor input source power, mating buncher, band driven input shaft 12 rotates, and makes rotor power shaft 12 main axis, and rotor 3 is limited by gear, around power shaft 12 rotation, thus being combined into the class elliptical orbit on rotor 3 summit.Power shaft 12 each rotation, rotor 3 turns 1/3 week, complete the fuel-displaced process of oil-feed of two working chambers.Oil transportation entrance and oil transportation outlet are located on sidewall 1, centrosymmetry is arranged, and position is calculated analytically, and selects optimal location, the horizontal line outer position that oil transportation center line of suction is selected in Fig. 3 B location place rotor left upper apex, oil transportation center line of discharge is through B location place rotor right vertices in Fig. 3;The turnover mouth of pipe has female thread, and inlet/outlet pipe is threaded connection, and flowline size is indefinite simultaneously, can change according to demand, as shown in Figure 5.
Sidewall inner chamber molded line is the outer trochoid of double; two arcs that inscribe generative methods is formed, and the contour line of rotor 3 is the interior envelope of sidewall molded line.
Rotate around power shaft 12 with motor driven rotor 3, rotor 3 is limited around power shaft 12 rotation by ring gear 8 and fixed gear 10 again, two kinds of motion synthesis are the approximate ellipse of rotor 3 vertex trajectories, have changed suction and the discharge of fluid by changing each cavity volume, have completed oil transportation.
This squash type bias revolution oil transfer pump rotor 3 has rotated the fuel-displaced operation principle of oil-feed as shown in Figure 3 in sidewall 1, power is provided by power shaft 12, because of ring gear 8, fixed gear 10 is meshed, ring gear 8 is fixed on rotor 3, fixed gear 10 and sidewall 1 geo-stationary, the ratio of ring gear 8 and the number of teeth of fixed gear 10 is 3:2, above-mentioned movement relation makes the movement locus on rotor 3 summit like oval, 3 sidewalls 1 of rotor are divided into three chambeies that work alone, three working chambers each successively complete oil-feed and oil extraction, in Fig. 3, A to G process is the oil-feed oil extraction process of the working chamber that in Fig. 4, indication oil-in d starts oil-feed, this process rotor 3 rotation half-turn, therefore the rotating speed of power shaft 12 is 3 times of rotor 3 rotational velocity, so it follows that power shaft turns around, the fuel-displaced process of oil-feed of two working chambers can be completed.
Rotor 3 is coordinated with the eccentric block place of power shaft 12 by axle sleeve;The input of power shaft 12 is assembled together with bearing (ball) cover by bearing and end cap 9, front capping 4 coordinates with sidewall 1, front capping 4 is inserted end cap 9, fixed by fore bearing end cap 11 before bearing, fixed gear 10 is fixed with front capping 4, the other end of power shaft 12 is assembled together by bearing and rear bearing end cap 6, and rear bearing end cap is fixed with rear seal-cover 13 by fastening bolt.Front capping 4 is bolted on sidewall 1 by fastening with rear seal-cover 13.It is internal that ring gear 8 is embedded in rotor 3, and fixed gear 10 covers on 4 before being embedded in.The side of rotor 3 is equipped with wear-resistant seal ring, to realize the sealing of rotor 3 side and front and back capping;3 three sharp corners of rotor are provided with groove, groove equipped with spring sealed to realize the sealing of rotor 3 and working chamber.
Squash type bias revolution oil transfer pump seals and can be divided into end face seal and axial seal.End face seal adopts as shown in Figure 1 and is respectively designed with step surface in front capping 4 and rear seal-cover 13 and sidewall 1 so that makes both be interlocked, and is lined with sealing gasket 2, plays sealing function.Front capping 4 and rear seal-cover 13, rotor 3, sidewall 1 work surface is processed through grinding machine so that front and back cover between 13,4 and rotor 3, leave the gap of 0.005-0.01mm between rotor 3 and sidewall 1, fluid it is full of, it is ensured that 3 chamber opposing seal that work independently that rotor 3 divides during work.Axial seal primarily inputs the sealing between axle 12 and fore bearing end cap 11, the method adopted is to be provided with oil duct on fore bearing end cap 11 with power shaft 12 contact surface, inside fill out oils and fats, the gap of 0.1-0.3mm is left between fore bearing end cap 11 and power shaft 12, can ensure that axial seal, oil transportation entrance and oil transportation outlet are respectively mounted check valve, it is ensured that pumping pressure.
Embodiment 2
The difference of the present embodiment and embodiment 1 is:
Internal rotor has the tooth coordinated with fixed gear.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.