A kind of self balancing device and pressure-increasing unit Quimby pump
Technical field
The present invention relates to pump fields, and in particular to a kind of self balancing device and pressure-increasing unit dual-screw pump screw.
Background technology
During oilfield surface construction, need to use skid mounted equipment, and wherein, pump sled equipment since its supercharging is apparent and
Pressure controllable is using more, and common to pump such as screw pump, with the application and development of pump, the speed of mainshaft is higher and higher.However
Pump main shaft group part in the fabrication process, inevitably because material is uneven, is asymmetrical in shape, process and assemble error due to cause
Deviation of gravity center rotation center makes pump generate vibration and vibration force, causes pump noise, bearing heating etc..This main shaft is uneven, with
Rotating speed raising, the high vibration of pumping unit is caused.
Currently, the problems such as causing vibration to the imbalance of rotating machinery, it usually needs do dynamic balancing measurement to rotary shaft
Experiment, cost is higher and complicated, therefore also using automatic balancing arrangement is installed additional, such as bobbin type automatic balancing arrangement, pendulum
Automatic balancing arrangement, liquid-filled automatic balancing arrangement, by move freely compensation quality form make up quality it is unbalanced by draw
The vibration risen.And wherein liquid-filled automatic balancing arrangement is favored because of simple structure and low cost, versatile.
Liquid-filled automatic balancing arrangement is made of the rotor of built-in partially liq, due to inertial centrifugal force effect, liquid
Rotary disk outer is thrown to, there is cavity near middle, when being run under crossing critical speed, eccentric mass and axis bending direction
On the contrary, to make liquid play the role of decay amplitude.
In the prior art, the rotor of traditional contained liquid is only equidistantly positioned there are one chamber or from rotor center more
A chamber, when self balancing device follows pump shaft to rotate, with the variation of rotating speed, due to the outer wall and rotor center of chamber
Distance it is certain, self balancing device can not adapt to the use demand under different rotating speeds, and versatility is poor.Especially for rotating speed not
There are the equipment of larger adjustment, damping effect worse with the stage.
Invention content
The purpose of the present invention is to provide a kind of self balancing device with high universalizable and pressure-increasing unit Quimby pumps.
To achieve the above object, the technical solution adopted by the present invention is:
A kind of self balancing device, including cylinder rotor, the rotor center be along rotor axially penetrate through to turn
The mounting hole of sub- both ends of the surface, the mounting hole are matched with the pump shaft of screw pump.The internal rotor is hollow-core construction and coaxial
Multi-layer annular partition board is set, and internal rotor is divided into the liquid storage cylinder of multi-layer annular by the annular partition successively from the inside to the outside.Institute
It states and is uniformly arranged multiple inlets and multiple liquid outlets on rotor centered on mounting hole, the liquid outlet is located at the circumferential surface of rotor
It is upper and be connected to positioned at the outermost liquid storage cylinder of rotor, the inlet be located on rotor end face and with positioned at rotor innermost layer
Liquid storage cylinder connection.Multiple liquid pass holes are uniformly arranged on every layer of annular partition centered on mounting hole, the liquid pass hole is along rotor
Radially extend and be connected to the liquid storage cylinder of annular partition both sides.Liquid pass hole on adjacent two layers annular partition is interlaced.
On the surface of the rotor outer wall inwardly and multiple closing components are respectively provided on the surface of each annular partition inwardly,
The closing component is corresponded with liquid pass hole, and the closing component includes guide cylinder, helical spring and sealing of hole plug, the guiding
One end of cylinder is fixed on the surface of surface or annular partition inwardly of rotor outer wall inwardly and is open towards liquid pass hole, institute
The one end for stating sealing of hole plug is located in guide cylinder and helical spring is arranged between end face and the bottom of guide cylinder, and the other end stretched into liquid
Sealing is constituted in hole.
Preferably, the internal rotor is divided into three layers of liquid storage cylinder by two layers of annular partition.
Preferably, sealing of hole plug one end and liquid pass hole opposite with liquid pass hole is in the cone to become smaller successively from outside to inside
Shape.
Preferably, the quantity of the liquid pass hole on every layer of annular partition is at least 3.
Preferably, using the pressure-increasing unit Quimby pump of the self balancing device, including driving screw rod arranged side by side
And driven screw, spire is respectively set in the middle part of the driving screw rod and driven screw, in driving screw rod and driven screw
Spire is intermeshed, and screw-casing is arranged outside the spire.Two are respectively set in the driving screw rod and driven screw certainly
Balancing device, the self balancing device are set on screw rod by mounting hole and are located at the both ends of screw-casing.It is described certainly flat
The inlet of weighing apparatus device is located on end face of the rotor far from screw-casing.
The driving screw rod and the axially disposed infusion hole of the inside center of driven screw, the driving screw rod and driven spiral shell
Multiple inlet tubes are arranged in the uniform amount for corresponding to inlet on bar at inlet, and one end and the infusion hole of the inlet tube connect
Logical, the other end is connected to inlet.Pitch wheel, the other end point is arranged in one end of the driving screw rod and driven screw
It is not connected to liquid reserve tank by rotary joint and pipeline.It is arranged catch box outside the rotor, the catch box passes through reflux line
It is connected to liquid reserve tank, reflux pump is set on the reflux line.
Preferably, the liquid being filled in the self balancing device is mercury.
Beneficial effects of the present invention embody a concentrated reflection of, and fabulous self-balancing effect are all had under different rotating speeds, greatly
Improve the versatility of self balancing device.Specifically, in use, self balancing device is mounted on the present invention by mounting hole
On the pump shaft of screw pump, internal rotor can be supplemented liquid by inlet or liquid is discharged by liquid outlet, and liquid is from inlet
It is delivered in liquid storage cylinder, since the stickiness of liquid acts on, when the rotor rotates, the rotating speed of liquid is gradually increased in rotor, finally
Reach the rotating speed synchronous with pump shaft.At the same time, liquid is subject to centrifugal forces is thrown toward liquid storage cylinder outer, in the rotor the heart
Cavity to nearby occur, and the eccentric mass of liquid be formed, at this point, the bending of the eccentric mass of liquid storage intracavity liquid and pump shaft axis
Direction is on the contrary, to make liquid play the role of decay amplitude.Due to the liquid eccentric mass of pump shaft demand under different rotating speeds
Difference, and the present invention is provided with multilayer liquid storage cylinder, in pump shaft low speed rotation, the centrifugal force that liquid is subject to is smaller, sealing of hole plug by
Elastic force to helical spring acts on, and blocks liquid pass hole under the guiding of guide cylinder.Liquid returns in the liquid storage cylinder of internal layer at this time
Turn, you can meet eccentric mass demand.Along with the raising of pump shaft rotating speed, required eccentric mass increase is balanced to reach.
At this point, due to rotor high speed rotation, sealing of hole plug is increased by the pressure of liquid, overcomes the elastic force of helical spring by sealing of hole plug top
It opens, liquid enters through liquid pass hole in the liquid storage cylinder of outer layer, is turned round in outer layer liquid storage cylinder, to meet larger eccentric mass need
It asks.Therefore, the present invention disclosure satisfy that the self-balancing demand under different rotating speeds, have extremely strong versatility, be especially suitable for speed governing fortune
The supercharging screw pump turned.
Description of the drawings
Fig. 1 is the structural schematic diagram of self balancing device;
Fig. 2 is the portions I enlarged drawing in Fig. 1;
Fig. 3 is the A-A direction views of structure shown in Fig. 1;
Fig. 4 is the structural schematic diagram of pressure-increasing unit Quimby pump;
Fig. 5 is the structural schematic diagram of spire.
Specific implementation mode
A kind of self balancing device in conjunction with shown in Fig. 1-5, including cylinder rotor 1,1 center of the rotor are that edge turns
Son 1 is axially penetrated through to the mounting hole 2 of 1 both ends of the surface of rotor, and the mounting hole 2 is matched with the pump shaft of screw pump, and rotor 1 passes through
Mounting hole 2 and pump shaft are affixed, and usual rotor 1 is directly affixed with pump shaft by bolt, naturally it is also possible to be pressed on pump using baffle ring
Outside axis, since fixed mode is more, details are not described herein again.1 inside of the rotor is hollow-core construction and coaxial arrangement multilayer loop
Shape partition board 3, the annular partition 3 will be divided into the liquid storage cylinder 4 of multi-layer annular successively from the inside to the outside inside rotor 1, such as Fig. 1 institutes
Show, the quantity of the annular partition 3 is two layers, and the liquid storage cylinder 4 of shellring shape will be divided into inside rotor 1.Certainly, the annular
The quantity of partition board 3 can also be 3 or 4 etc., then the number of plies of corresponding liquid storage cylinder 4 is just 4 layers or 5 layers.The number of annular partition 3
Amount is more, then versatility is stronger.
Multiple inlets 5 and multiple liquid outlets 6 are uniformly arranged on the rotor 1 centered on mounting hole 2, as shown in Figure 1,
The quantity of inlet 5 is two, and the quantity of liquid outlet 6 is four, and symmetrical centered on mounting hole 2, it is of course also possible to
More are set, as long as symmetrical centered on mounting hole 2.The liquid outlet 6 be located on the circumferential surface of rotor 1 and with position
In 1 outermost liquid storage cylinder 4 of rotor be connected to, the inlet 5 be located on 1 end face of rotor and with positioned at 1 innermost layer of rotor
Liquid storage cylinder 4 is connected to.Liquid can enter inside rotor 1 from inlet 5, and internal liquid can be discharged from liquid outlet 6 again.Every layer
Multiple liquid pass holes 7 are uniformly arranged on annular partition 3 centered on mounting hole 2, the liquid pass hole 7 radially extends and connects along rotor 1
The liquid storage cylinder 4 of logical 3 both sides of annular partition.As shown in fig. 1, the quantity of liquid pass hole 7 is four, can also be 5,6 etc., is led to
3 are at least often provided with, in order to which liquid is uniformly discharged into from internal layer liquid storage cylinder 4 in outer layer liquid storage cylinder 4.1 outer wall of the rotor
Multiple closing components, the closing component and liquid excessively are respectively provided on the surface inwardly and surface of each annular partition 3 inwardly
Hole 7 corresponds, and as shown in fig. 1, the inner surface of the side wall of outermost rotor 1 is provided with closing component, while position
It is also equipped with closing component in the inner surface of the annular partition 3 of internal layer, the position of closing component is opposite with the position of liquid pass hole 7.
Closing component is used to control the keying of liquid pass hole 7, for the ease of the installation of closing component, the mistake on adjacent two layers annular partition 3
Fluid apertures 7 is interlaced.
The closing component includes guide cylinder 8, helical spring 9 and sealing of hole plug 10, one end fixed setting of the guide cylinder 8
On the surface of surface or annular partition 3 inwardly of 1 outer wall of rotor inwardly and it is open towards liquid pass hole 7, the shape of sealing of hole plug 10
Consistent with guide cylinder 8 and liquid pass hole 7, size just meets sealing of hole plug 10 can be oriented to sliding in guide cylinder 8, can also be to mistake
The closure to liquid pass hole 7 is realized in the movement of fluid apertures 7.One end of the sealing of hole plug 10 is located in guide cylinder 8 and end face and guide cylinder 8
Helical spring 9 is set between bottom, and the other end, which stretches into, constitutes sealing in liquid pass hole 7.In order to improve sealing of hole plug 10 to liquid pass hole 7
Sealing characteristics, better way are that the sealing of hole plug 10 one end opposite with liquid pass hole 7 and liquid pass hole 7 are in from outside to inside successively
The taper to become smaller.As shown in Fig. 2, the outer segment of liquid pass hole 7 and the end of sealing of hole plug 10 are pyramidal in matching.
In use, self balancing device is mounted on the pump shaft of screw pump the present invention by mounting hole 2, in rotor 1
Portion can be supplemented liquid by inlet 5 or liquid is discharged by liquid outlet 6, and liquid is delivered to from inlet 5 in liquid storage cylinder 4, by
It is acted in the stickiness of liquid, when rotor 1 rotates, the rotating speed of liquid is gradually increased in rotor 1, finally reaches synchronous with pump shaft
Rotating speed.At the same time, liquid is subject to centrifugal forces is thrown toward 4 outer of liquid storage cylinder, will occur in 1 immediate vicinity of rotor empty
Hole forms the eccentric mass of liquid, at this point, in liquid storage cylinder 4 eccentric mass of liquid and pump shaft axis bending direction on the contrary, from
And liquid is made to play the role of decay amplitude.Since the liquid eccentric mass of demand is different under different rotating speeds for pump shaft, and this hair
Bright to be provided with multilayer liquid storage cylinder 4, in pump shaft low speed rotation, the centrifugal force that liquid is subject to is smaller, and sealing of hole plug 10 is by spiral bullet
The elastic force of spring 9 acts on, and liquid pass hole 7 is blocked under the guiding of guide cylinder 8.Liquid revolution in the liquid storage cylinder 4 of internal layer at this time, i.e.,
Eccentric mass demand can be met.Along with the raising of pump shaft rotating speed, required eccentric mass increase is balanced to reach.At this point,
Due to 1 high speed rotation of rotor, sealing of hole plug 10 is increased by the pressure of liquid, and the elastic force of helical spring 9 is overcome to push up sealing of hole plug 10
It opens, liquid enters through liquid pass hole 7 in the liquid storage cylinder 4 of outer layer, is turned round in outer layer liquid storage cylinder 4, to meet larger eccentric matter
Amount demand.Therefore, the present invention disclosure satisfy that the self-balancing demand under different rotating speeds, have extremely strong versatility, be especially suitable for adjusting
The supercharging screw pump of speed operating.
Self balancing device of the present invention is applicable not only to single-screw (single screw) pump, also can be generally applicable in Quimby pump or three spiral shells
On bar pump, this is sentenced for Quimby pump:In conjunction with shown in Fig. 3-5, pressure-increasing unit Quimby pump, including active arranged side by side
Spire, driving screw rod 11 is respectively set in the middle part of screw rod 11 and driven screw 12, the driving screw rod 11 and driven screw 12
With the spire intermeshing on driven screw 12, the spire is arranged screw-casing 13 outside, this is conventional technical means, herein
It repeats no more.Two self balancing devices are respectively set in the driving screw rod 11 and driven screw 12, the self balancing device is logical
Cross the both ends that mounting hole 2 is set on screw rod and is located at screw-casing 13.It is described from flat to coordinate the use of self balancing device
The inlet 5 of weighing apparatus device is located on end face of the rotor 1 far from screw-casing 13.As shown in Figure 4, it is located at oneself of 13 left side of screw-casing
The inlet 5 of balancing device is located at the left side of rotor 1, and the inlet 5 positioned at the self balancing device on 13 right side of screw-casing is located at
The right side of rotor 1.
The driving screw rod 11 and the axially disposed infusion hole 14 of the inside center of driven screw 12, the driving screw rod 11
Multiple inlet tubes 15 are set with the uniform amount for corresponding to inlet 5 on driven screw 12 at inlet 5, as shown in figure 3, often
The quantity of 1 inlet 5 of a rotor is two, then the quantity of inlet tube 15 is also two.One end of the inlet tube 15 and infusion
Hole 14 is connected to, and the other end is connected to inlet 5.Intermeshing tooth is arranged in the left end of the driving screw rod 11 and driven screw 12
Wheel 21, driving screw rod 11 drive 12 synchronous rotary of driven screw, right end to lead to respectively after by prime mover driven, by gear 21
Rotary joint 16 and pipeline is crossed to be connected to liquid reserve tank 17.Catch box 18 is arranged outside the rotor 1, the catch box 18 is to cover on
A babinet outside rotor 1 does not follow rotor 1 to rotate, and plays the role of collecting the liquid being discharged from rotor 1, the liquid collecting
Case 18 is connected to by reflux line 19 with liquid reserve tank 17, and reflux pump 20 is arranged on the reflux line 19.When in use, liquid reserve tank
The liquid stored in 17 passes through pipeline, rotary joint 16, infusion hole 14, inlet tube 15, inlet 5 and enters inside rotor 1 successively,
And self-balancing adjusting is carried out according to rotating speed.It after the discharge of the liquid outlet 6 of rotor 1, and can be collected by catch box 18, through returning
Flow tube road 19 is back in catch box 18, and realization recycles.The liquid being filled in the self balancing device can be water or its
His liquid, better way are that the liquid is mercury.Since the density of mercury is higher, it is capable of providing larger eccentric mass.
In order to further verify the effectiveness in vibration suppression of the present invention, driving screw rod 11 and the motor that maximum (top) speed is 3000r/min
Connection, driving motor are tested vibration of the Quimby pump equipment after not installing self balancing device additional and installing additional, are turned in difference
Under speed, repeats experiment three times, it is as shown in table 1 below to obtain spindle vibration velocity information.
1 vibration-testing information table of table
As it can be seen from table 1 under different rotating speeds, it is equal compared with the vibration velocity for installing forward spindle additional after installing self balancing device additional
There is apparent decrease, that is to say, that after installing self balancing device additional, vibration equipment reduces, meanwhile, at high speed, self-balancing dress
The effectiveness in vibration suppression set is more preferable.
Although specific embodiments of the present invention have been described above, it will be appreciated by those of skill in the art that not
Under the premise of the principle and substance of the present invention, many changes and modifications may be made, but these become
More protection scope of the present invention is each fallen with modification.