CN206017169U - A kind of hydraulic driving screw pump lifting device - Google Patents
A kind of hydraulic driving screw pump lifting device Download PDFInfo
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- CN206017169U CN206017169U CN201620936072.1U CN201620936072U CN206017169U CN 206017169 U CN206017169 U CN 206017169U CN 201620936072 U CN201620936072 U CN 201620936072U CN 206017169 U CN206017169 U CN 206017169U
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Abstract
The utility model discloses a kind of hydraulic driving screw pump lifting device, belongs to well recovery field.The device includes：The screw motor that is from top to bottom sequentially connected with, drive assembly, screw pump.Power fluid passage is formed between first bushing and the first screw rod of screw motor, and the first screw rod is hollow structure and is connected with oil pipe.Production fluid passage is formed between second bushing and the second screw rod of screw pump.The main body of drive assembly is respectively connecting to the first bushing and the second bushing, and connecting pole is co-axially located in the inner chamber of main body, and forms annular space with main body.The lower end of connecting pole is connected with the second screw rod, and upper end is connected with the first screw rod and is turned on, and forms oil transportation channel.Which is sequentially divided into separate power fluid section, bearing section and production fluid section for first annular compartment in annular space and the second annular compartment.The main body wall of power fluid section is provided with power fluid apertures, and the connecting pole side wall of production fluid section is provided with output fluid apertures.The characteristics of device has pump efficiency higher.
Description
Technical field
The utility model is related to well recovery field, more particularly to a kind of hydraulic driving screw pump lifting device.
Background technology
Screw pump is called progressive positive displacement pump, and which is made up of helical form rotor and the stator with helicoid, rotor with fixed
The inner chamber interference fit of son forms cavity that is continuous and sealing, the transmission for realizing liquid medium by the rotary motion of rotor.Spiral shell
Bar pump is widely used in the crude oil production that viscosity is larger, sand content is higher because of its small volume, the low feature of operating noise.Make
When being recovered the oil with screw pump, screw pump is arranged in the oil reservoir of oil well, and top is connected to the driving dress of well head by sucker rod
Put, rotate screw pump by driving means, so as to the crude oil in oil reservoir is lifted to well head.But in the larger oil well of gradient
During using screw pump, between the sucker rod connected at the top of screw pump and oil pipe, serious eccentric wear phenomenon can be produced, cause to examine pump week
Phase is short, and pump oil efficiency is low.Therefore it provides the screw pump lifting device of a kind of oil well larger suitable for gradient or horizontal well is
Very necessary.
Prior art provides a kind of hydraulic driving screw pump without connecting with pumping rod, and the hydraulic driving screw pump includes
Hydraulic motor, shaft coupling, screw pump, packer, floral tube, the outer cylinder body of hydraulic motor are spent by the short tubular that tube wall carries open-work
Pipe is connected with the stator of screw pump, and the power output shaft of hydraulic motor is connected with the rotor of screw pump by shaft joint, screw pump
Lower end connects packer.During use, the top of hydraulic motor is connected with the bottom of oil pipe column, set packer makes oil jacket
Annular space forms the annular space of closing.Then, power fluid is injected along oil pipe column in hydraulic motor from well head, in power fluid
Driving under hydraulic motor drive screw pump rotation, the crude oil below screw pump is extracted out, and from screw pump upper end through floral tube
Flow in oil jacket annular space, until returning to ground.Meanwhile, power fluid is discharged from the lower end of hydraulic motor after hydraulic motor,
Converge in floral tube with the crude oil of extraction, and together return to ground.Crude oil can carry out follow-up profit with power fluid after separating
With.
Designer has found that prior art at least has following technical problem：
During the hydraulic driving screw pump crude oil extraction provided by prior art, through hydraulic motor flow out power fluid with
The crude oil of screw pump extraction can produce convection current when converging in floral tube, power fluid can produce obstruction to the lifting of crude oil, cause liquid
The pump efficiency of power drive screw pump is relatively low.
Utility model content
The utility model embodiment technical problem to be solved is, there is provided a kind of pump efficiency is high, pump detection period length
Hydraulic driving screw pump lifting device, concrete technical scheme are as follows：
The utility model embodiment provides a kind of hydraulic driving screw pump lifting device, and the device includes：Screw motor,
Screw pump, described device also include drive assembly, and the screw motor, the drive assembly, the screw pump are from top to bottom
It is sequentially connected with.
Wherein, the screw motor includes：First bushing and the first spiral shell being co-axially located in the first bushing inner chamber
Bar, the gap between first screw rod and first bushing form power fluid passage, and first screw rod is hollow spiral shell
Rotation cylinder, and be connected with oil pipe.
The screw pump includes：Second bushing and the second screw rod being co-axially located in the second bushing inner chamber, described
Gap between second screw rod and second bushing forms production fluid passage.
The drive assembly includes：Main body, connecting pole, the first journal bearing, thrust bearing, the second journal bearing.Described
Main body and the connecting pole are hollow tubular structure, and the main body two ends are served as a contrast with first bushing and described second respectively
Set connection, the connecting pole are co-axially located in the inner chamber of the main body, and form annular space with the main body.The connection
The lower end of post is connected with second screw rod, and upper end is connected and turns on first screw rod, forms oil transportation channel.The annular
First annular compartment and the second annular compartment has been sequentially arranged in space, the annular space has sequentially been divided into separate
Power fluid section, bearing section and production fluid section, be from top to bottom sequentially arranged inside the bearing section first journal bearing,
The thrust bearing and second journal bearing.The power fluid section and the power fluid channel connection, and with the power
At least one power fluid apertures is provided with the relative main body wall of liquid section, so that the power fluid section is connected with oil jacket annular space
Logical.Set on the production fluid section and the production fluid channel connection, and the connecting pole side wall relative with the production fluid section
At least one output fluid apertures is equipped with, so that the production fluid section is connected with the oil transportation channel.
Specifically, preferably, described device also includes tubing coupling, the tubing coupling is arranged on first bushing
The top of side wall, for connecting the oil pipe.
Specifically, preferably, described device also includes that tail pipe, the tail pipe are arranged on the bottom of the second bush side wall
Portion, for protecting second bushing.
Specifically, preferably, the quantity at least two of the power fluid apertures, and the power fluid apertures is around the main body
The even circumferential distribution of side wall.
Specifically, preferably, the quantity at least two of the output fluid apertures, and the output fluid apertures is around the main body
The even circumferential distribution of side wall.
Specifically, preferably, being radially provided with a circle raised step on the side wall of the connecting pole, described only
Thrust bearing is located at the upper surface of the raised step.The thrust bearing includes upper bearing (metal) main body, lower bearing main body and suit
In the upper bearing (metal) main body and the thrust bearing shell of the lower bearing body exterior, it is provided with the middle part of the thrust bearing shell
Toroidal membrane, the upper bearing (metal) main body are located at the upper surface of the toroidal membrane, and the lower bearing main body is arranged on the annular
Between the lower surface of dividing plate and the raised step.
Specifically, preferably, being additionally provided with two oilholes, the lubrication in the main body wall of the drive assembly
The intracavity inter-connection of oilhole and the bearing section.
Specifically, preferably, being provided with the madial wall of the first annular compartment and the second annular compartment
Seal groove, is provided with sealing ring in the seal groove.
The beneficial effect brought of technical scheme that the utility model embodiment is provided is：
The hydraulic driving screw pump lifting device that the utility model embodiment is provided, by first annular compartment and the second ring
The annular space of drive assembly is separated into shape compartment the production fluid section of the power fluid section, the bearing section at middle part and bottom on top,
By arranging power fluid apertures on the side wall of drive assembly main body, make power fluid passage in screw motor by power fluid section with
Oil jacket annular space is connected, so that power fluid can enter screw motor by oil jacket annular space, with the rotation of drive screw motor.
Power fluid is moved from the bottom to top along power fluid passage, is eventually entered into the oil pipe of screw pump upper end and is returned and drains into ground.By passing
Output fluid apertures is set on the side wall of dynamic assembly connecting pole, the production fluid passage of screw pump is made by production fluid section and oil transportation channel phase
Connection, so that the production fluid (i.e. crude oil) in oil well is in the case where the suction and transmission of screw pump are acted on, along production fluid passage, output
Liquid section and oil transportation channel are moved from the bottom to top, eventually enter into the oil pipe of screw pump upper end, and are returned after mixing with power fluid and drained into
Ground, realizes crude oil production.Above-mentioned improvement is carried out by the structure to drive assembly, the stream of power fluid and production fluid is changed
Dynamic passage, when power fluid is mixed in oil pipe with production fluid, flow direction is consistent, i.e., both move from the bottom to top, from
And avoid power fluid and return the obstruction for being drained through journey to production fluid, reduce liquid convection and make to hydraulic driving screw pump lifting device
Into impact, so as to extend pump detection period, and power fluid also provides power for the row of returning of production fluid, therefore improves liquid
The pump efficiency of power drive screw pump lifting device.Meanwhile, the hydraulic driving screw pump lifting device is easy to use, is suitable to scale and pushes away
Wide application.
Description of the drawings
For the technical scheme being illustrated more clearly that in the utility model embodiment, below will be to needed for embodiment description
Accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can be with according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the structural representation of the hydraulic driving screw pump lifting device that the utility model embodiment is provided；
Fig. 2 is the structural representation of the drive assembly that the another embodiment of the utility model is provided.
Reference is represented respectively：
1 screw motor,
101 first bushings,
102 first screw rods,
103 power fluid passages,
104 oil transportation channels,
2 screw pumps,
201 second bushings,
202 second screw rods,
203 production fluid passages,
3 drive assemblies,
301 main bodys,
3011 first annular compartments,
3012 second annular compartments,
3013 power fluid sections,
3014 bearing sections,
3015 production fluid sections,
3016 power fluid apertures,
3017 oilholes,
302 connecting poles,
3021 output fluid apertures,
3022 raised steps,
303 first journal bearings,
304 thrust bearings,
3041 upper bearing (metal) main bodys,
3042 lower bearing main bodys,
3043 thrust bearing shells,
305 second journal bearings,
306 stop nuts,
307 sealing rings,
4 tubing couplings,
5 tail pipes.
Specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below will be to the utility model embodiment party
Formula is described in further detail.
The utility model embodiment provides a kind of hydraulic driving screw pump lifting device, as shown in Figures 1 and 2,
The device includes：Screw motor 1, screw pump 2, drive assembly 3, and screw motor 1, drive assembly 3, screw pump 2 are from top to bottom
It is sequentially connected with.
Wherein, screw motor 1 includes：First bushing 101 and the first screw rod being co-axially located in 101 inner chamber of the first bushing
102, the gap between the first screw rod 102 and the first bushing 101 forms power fluid passage 103, and the first screw rod 102 is hollow spiral shell
Rotation cylinder, and be connected with oil pipe.
Screw pump 2 includes：Second bushing 201 and the second screw rod 202 being co-axially located in 201 inner chamber of the second bushing, the
Gap between two screw rods 202 and the second bushing 201 forms production fluid passage 203.
Drive assembly 3 includes：Main body 301, connecting pole 302, the first journal bearing 303, thrust bearing 304, second are radially
Bearing 305.Main body 301 and connecting pole 302 are hollow tubular structure, the two ends of main body 301 respectively with the first bushing 101 and
Second bushing 201 connects, and connecting pole 302 is co-axially located in the inner chamber of main body 301, and forms annular space with main body 301.Even
The lower end for connecing post 302 is connected with the second screw rod 202, and upper end is connected and turns on the first screw rod 102, forms oil transportation channel 104.Ring
First annular compartment 3011 and the second annular compartment 3012 has been sequentially arranged in shape space, and annular space has sequentially been divided into phase
Mutually independent power fluid section 3013, bearing section 3014 and production fluid section 3015, are from top to bottom sequentially arranged inside bearing section 3014
There are the first journal bearing 303, thrust bearing 304 and journal bearing.Power fluid section 3013 is connected with power fluid passage 103, and with
At least one power fluid apertures 3016 is provided with the relative 301 side wall of main body of power fluid section 3013 so that power fluid section 3013 with
Oil jacket annular space is connected.Production fluid section 3015 is connected with production fluid passage 203, and the connecting pole 302 relative with production fluid section 3015
At least one output fluid apertures 3021 is provided with the wall of side, so that production fluid section 3015 is connected with oil transportation channel 104.
The hydraulic driving screw pump lifting device that the utility model embodiment is provided, by first annular compartment 3011 and the
The annular space of drive assembly 3 is separated into second ring compartment 3012 bearing section 3014 of the power fluid section 3013, middle part on top
With the production fluid section 3015 of bottom, by power fluid apertures 3016 being arranged on the side wall of 3 main body 301 of drive assembly, make screw rod horse
It is connected with oil jacket annular space up to the power fluid passage 103 in 1 by power fluid section 3013, so that power fluid can pass through oil jacket
Annular space enters screw motor 1, with the rotation of drive screw motor 1.Power fluid is moved from the bottom to top along power fluid passage 103, most
Enter the oil pipe of 2 upper end of screw pump eventually and return and drain into ground.By arranging output on the side wall of 3 connecting pole 302 of drive assembly
Fluid apertures 3021, makes the production fluid passage 203 of screw pump 2 be connected with oil transportation channel 104 by production fluid section 3015, so that oily
Production fluid (i.e. crude oil) in well screw pump 2 suction and transmission act under, along production fluid passage 203, production fluid section 3015
And oil transportation channel 104 is moved from the bottom to top, the oil pipe of 2 upper end of screw pump is eventually entered into, and return after mixing with power fluid and drain into
Ground, realizes crude oil production.Above-mentioned improvement is carried out by the structure to drive assembly 3, power fluid and production fluid is changed
Flow channel, when power fluid is mixed in oil pipe with production fluid, flow direction is consistent, i.e., both move from the bottom to top,
The obstruction for being drained through journey is returned to production fluid so as to avoid power fluid, is reduced liquid convection and is given hydraulic driving screw pump lifting device
The impact for causing, so as to extend pump detection period, and power fluid also provides power for the row of returning of production fluid, therefore improves
The pump efficiency of hydraulic driving screw pump lifting device.Meanwhile, the hydraulic driving screw pump lifting device is easy to use, is suitable to scale
Popularization and application.
Specifically, screw motor 1 is the power part in hydraulic driving screw pump lifting device, will by screw motor 1
Power is transferred to drive assembly 3, then drives screw pump 2 to rotate by drive assembly 3, realize screw pump 2 to the suction of crude oil and
Conveying.Screw motor 1 includes：First bushing 101 (equivalent to stator) and be co-axially located in 101 inner chamber of the first bushing first
Screw rod 102 (equivalent to rotor), is provided with the double thread being engaged with the first screw rod 102 on the inwall of the first bushing 101, from
And make the gap between the first screw rod 102 and the first bushing 101 form a power fluid passage 103.Power fluid passage 103 is actual
On be continuous closing space one by one, with the rotation of the first screw rod 102, closing space along the first bushing 101 gradually upwards
Mobile.And power fluid is a kind of liquid with certain pressure and flow velocity, for the motion of drive screw pump 2.In oil jacket annular space
Power fluid flow into from the lower end of power fluid passage 103, under the driving of power fluid, the first screw rod 102 starts to rotate, so as to reality
Existing driving of first screw rod 102 to drive assembly 3 and screw pump 2, meanwhile, power fluid is along power fluid passage 103 gradually to upper end
Motion, to converge with crude oil and return the well head for draining into oil well in the oil pipe at the top of screw motor 1.For the ease of screw motor 1
Top and the connection of oil pipe, hydraulic driving screw pump lifting device also include that tubing coupling 4, tubing coupling 4 are arranged on the first lining
Cover the top of 101 side walls.And internal thread is provided with the madial wall of tubing coupling 4, it is engaged with the external screw thread with oil pipe bottom,
Screw motor 1 is threadedly coupled by tubing coupling 4 with oil pipe, be easy to the installation and removal of screw motor 1.
Specifically, screw pump 2 is the oil recovery part in hydraulic driving screw pump lifting device, and screw pump 2 is in screw motor 1
Drive under rotate.Screw pump 2 is similar to the structure of screw motor 1, and except for the difference that, the first screw rod 102 in screw motor 1 is
Hollow, for the conveying of crude oil, and in screw pump 2 second screw rod 202 be solid, only by the second screw rod 202 (equivalent to
Rotor) and the production fluid passage 203 between the second bushing 201 (equivalent to stator) aspirating and convey crude oil.Crude oil enters the
After first chamber between 201 lower end of two screw rods 202 and the second bushing, with the rotation of the second screw rod 202, first chamber by
Gradually move upwards, by Crude Oil Transportation to drive assembly 3 and oil transportation channel 104, most crude oil is lifted to well head at last.In order to right
The bottom of screw pump 2 is protected, and hydraulic driving screw pump lifting device also includes that tail pipe 5, tail pipe 5 are arranged on the second bushing
The bottom of 201 side walls, occurs damaging to avoid the bottom of screw pump 2 and shaft bottom sandstone direct collision, extends making for screw pump 2
Use the life-span.
Specifically, drive assembly 3 is the connection member in hydraulic driving screw pump lifting device, in order to connecting screw rod motor
1 and screw pump 2.The main body 301 of drive assembly 3 equivalent to shell, itself and first bushing 101 and screw pump 2 of screw motor 1
Second bushing 201 connects, and is collectively forming the shell body of whole hydraulic driving screw pump lifting device.And the connection of drive assembly 3
Post 302 equivalent to a connecting shaft, by connecting pole 302 by inside the first screw rod 102 inside screw motor 1 and screw pump 2
The second screw rod 202 couple together so that the first screw rod 102 drive the second screw rod 202 rotate, screw pump 2 is just carried out
Often work.
Specifically, hydraulic driving screw pump of the prior art 2, its power fluid are injected from oil pipe, and power fluid is in liquid
Moved in pressure motor from top to bottom, and production fluid is then moved from bottom to up through screw pump 2, power fluid is being spent with production fluid
Returned by oil jacket annular space after mixing in pipe and drain into ground.Flow direction when being mixed with production fluid due to power fluid is conversely, institute
The row of returning of production fluid can be caused to hinder with power fluid.And the hydraulic driving screw pump lifting dress that the utility model embodiment is provided
In putting, power fluid is to be moved along power fluid passage 103 from the bottom to top, eventually enters into oil pipe and returns and drains into ground.Production fluid then edge
Production fluid passage 203 and oil transportation channel 104 are moved from the bottom to top, eventually enter into oil pipe, and in the oil pipe at the top of screw motor 1
Return after mixing with power fluid and drain into ground, realize crude oil production.When power fluid is mixed with production fluid both from the bottom to top
Motion, its flow direction are consistent, return the obstruction for being drained through journey to production fluid so as to avoid power fluid, reduce liquid convection to liquid
The impact that power drive screw pump lifting device is caused, and then pump detection period is extended, and return row of the power fluid also for production fluid
Power is provided, the pump efficiency of hydraulic driving screw pump lifting device is therefore improve.
Specifically, as shown in Figure 2, in order that power liquid energy is led to by the power fluid that oil jacket annular space enters screw motor 1
Road 103, is provided with least one power fluid apertures 3016, preferably at least two power fluids on the side wall of 3 main body 301 of drive assembly
Hole 3016, concretely 2,3,4,5 etc., and multiple power fluid apertures 3016 are uniform on the circumference of 301 side wall of main body
Distribution, so as to, on the basis of 301 intensity of main body is ensured, enable power fluid uniformly promptly to enter power fluid passage 103.With
When, first annular compartment 3011 and second is provided with the main body 301 of drive assembly 3 and the annular space of the formation of connecting pole 302
Annular space is sequentially separated into mutually solely by annular compartment 3012 by first annular compartment 3011 and the second annular compartment 3012
Vertical power fluid section 3013, bearing section 3014 and production fluid section 3015, so that the power fluid flowed in power fluid apertures 3016 enters
Enter power fluid section 3013, and power fluid passage 103 is moved into upwards along power fluid section 3013, and then drive screw motor 1
First screw rod 102, realizes the rotation of screw motor 1.
Specifically, in order that production fluid can be entered in oil transportation channel 104 from production fluid passage 203, the company of drive assembly 3
Connect, preferably at least two output fluid apertures 3021, concretely 2
Individual, 3,4,5 etc., and multiple output fluid apertures 3021 are uniformly distributed on the circumference of 302 side wall of connecting pole, so that production fluid
Oil transportation channel 104 uniformly can promptly be entered.Production fluid is moved from the bottom to top along the production fluid passage 203 of screw pump 2, is gone forward side by side
Enter the production fluid section 3015 of drive assembly 3, after arranging output fluid apertures 3021, production fluid section 3015 is connected with oil transportation channel 104,
So that production fluid can enter oil transportation channel 104, and ground is lifted to through oil pipe, realize crude oil production.Additionally, in order to
Make the liquid in drive assembly 3 flow smooth, reduce impact of the liquid to 302 side wall of main body 301 and connecting pole, power fluid apertures
3016 are interspersed with output fluid apertures 3021, it is to avoid the side wall unbalance stress of main body 301 and connecting pole 302, it is ensured that drive assembly 3
Long-Time Service.
Specifically, due to drive assembly 3 annular space top need connect with power fluid passage 103, bottom need and
Production fluid passage 203 is connected, and also needs to arrange the first journal bearing 303, thrust bearing 304 and the second radial axle between annular space
305 are held, therefore on the premise of proof strength, annular space there should be larger volume as far as possible.So, connecting pole 302
External diameter should be less than the external diameter of the first screw rod 102 and the second screw rod 202, so that power fluid and production fluid can smoothly enter power fluid
Passage 103 and production fluid passage 203, it is ensured that conveying of the screw motor 1 to the driving and screw pump 2 of screw pump 2 to crude oil.
Specifically, in order to realize rotation of the connecting pole 302 in main body 301, axle is provided with the annular space of main body 301
Section 3014 is held, the first journal bearing 303, thrust bearing 304 and the second journal bearing 305 in bearing section 3014, has been sequentially arranged.
Wherein, the first journal bearing 303 is sleeved on the outside of the connecting pole 302 of power fluid section 3013, to bear power fluid section 3013
Radial load, and ensure the rotation of connecting pole 302 in power fluid section 3013.Second journal bearing 305 is sleeved on production fluid section
The outside of 3015 connecting pole 302, to bear the radial load of production fluid section 3015, and ensures connecting pole in production fluid section 3015
302 rotation.And thrust bearing 304 is located between the first journal bearing 303 and the second journal bearing 305, for bearing connection
The axial load of post 302, it is ensured that axial strength when connecting pole 302 rotates.In more detail, the middle and lower part of 302 side wall of connecting pole
A circle raised step 3022 is radially provided with, and thrust bearing 304 is located at the upper surface of raised step 3022, so as to pass through
Raised step 3022 is that thrust bearing 304 provides support, thrust bearing 304 is consolidated with connecting pole 302 and is connected, it is ensured that thrust shaft
Hold 304 normal use.In order to further be defined to the position of thrust bearing 304, as shown in Figure 2, on connecting pole 302
Stop nut 306 is also set with, stop nut 306 is threadedly coupled with connecting pole 302, by stop nut 306 by thrust bearing
304 are pressed in raised step 3022, so that the position in the axial direction of thrust bearing 304 keeps stable, it is ensured that thrust bearing 304
302 axial load of connecting pole is born, makes connecting pole 302 that there is higher axial strength.
Specifically, as shown in Figure 2, thrust bearing 304 includes upper bearing (metal) main body 3041, lower bearing main body 3042 and set
Thrust bearing shell 3043 outside being mounted in upper bearing (metal) main body 3041 and lower bearing main body 3042, in the middle part of thrust bearing shell 3043
Toroidal membrane is provided with, upper bearing (metal) main body 3041 and lower bearing main body 3042 are symmetricly set on the upper and lower end face of toroidal membrane,
And lower bearing main body 3042 is located between lower surface and the raised step 3022 of toroidal membrane.Bearing main body is enclosed by arranging two,
Improve the effect that thrust bearing 304 carries axial load.Meanwhile, the first journal bearing 303 and the second journal bearing 305 also include
A two circle bearing main bodies and shell body, the upper and lower side wall of thrust bearing shell 3043 respectively with the first journal bearing
303 and second journal bearing 305 shell body threaded connection so that the first journal bearing 303, thrust bearing 304 and the second footpath
Become an entirety to bearing 305, improve each antiwhip, it is ensured that connecting pole 302 is rotated smoothly.
Specifically, in order to ensure the Long-Time Service of each bearing in bearing section 3014, on the 301 side wall of main body of drive assembly 3
The intracavity inter-connection of two oilholes 3017, oilhole 3017 and bearing section 3014 is additionally provided with, by oilhole
3017 can be by lubricating oil injection bearing section 3014.Due to there is certain gap between each bearing, lubricating oil enters bearing
Just each bearing can be lubricated after the annular space of section 3014, extend the first journal bearing 303,304 and of thrust bearing
The service life of the second journal bearing 305, enable connecting pole 302 to rotate glibly, it is ensured that oil recovery process is smoothed out.
Specifically, in order to ensure the separate of power fluid section 3013, bearing section 3014 and production fluid section 3015, power is made
Liquid and output liquid energy flow in corresponding passage, do not interfere with each other, in first annular compartment 3011 and the second annular compartment 3012
Madial wall on be provided with seal groove, be provided with sealing ring 307 in seal groove.First annular compartment is made by sealing ring 307
3011 and second annular compartment 3012 in sealing contact with connecting pole 302, it is to avoid power fluid section 3013, bearing section 3014 and production fluid
The mutual seepage of liquid between section 3015, makes hydraulic driving screw pump lifting device keep higher pump efficiency.
Specifically, the hydraulic driving screw pump lifting device that the utility model embodiment is provided, when using, by screw rod
Tubing coupling 4 at the top of motor 1 is connected to the bottom of oil pipe column.Power fluid, power fluid is injected in the oil jacket annular space of well head
Flow downward, power fluid section 3013, power fluid passage 103, power fluid is sequentially entered through the power fluid apertures 3016 on drive assembly 3
First screw rod 102 of one side drive screw motor 1 rotates, and is gradually moved along the first bushing 101 upwards, eventually arrives at oil pipe
At box cupling 4.Meanwhile, the first screw rod 102 drives the second screw rod 202 to rotate by the connecting pole 302 of drive assembly 3, and screw pump 2 is opened
Crude oil is pumped to production fluid passage 203, and is gradually moved into the product of drive assembly 3 along the second bushing 201 upwards by beginning work
Go out liquid section 3015, then the output fluid apertures 3021 on connecting pole 302 enters oil transportation channel 104, is finally reached tubing coupling 4
Place.Crude oil is converged at tubing coupling 4 with power fluid, and flow direction is consistent, and both return commonly through oil pipe and drain into oil well well
Mouthful, realize crude oil production.
Preferred embodiment of the present utility model is the foregoing is only, not in order to limit protection domain of the present utility model,
All of the present utility model spirit and principle within, any modification, equivalent substitution and improvements that is made etc. should be included in this reality
Within new protection domain.
Claims (8)
1. a kind of hydraulic driving screw pump lifting device, described device include：Screw motor (1), screw pump (2), its feature exist
In described device also includes drive assembly (3)；And screw motor (1), the drive assembly (3), the screw pump (2)
From top to bottom it is sequentially connected with；
Screw motor (1) includes：First bushing (101) and be co-axially located in the first bushing (101) inner chamber
One screw rod (102), the gap between the first screw rod (102) and the first bushing (101) form power fluid passage
(103), the first screw rod (102) are hollow spiral cylinder, and are connected with oil pipe；
Screw pump (2) include：Second bushing (201) and be co-axially located in the second bushing (201) inner chamber second
Screw rod (202), the gap between the second screw rod (202) and the second bushing (201) form production fluid passage (203)；
Drive assembly (3) include：Main body (301), connecting pole (302), the first journal bearing (303), thrust bearing
(304), the second journal bearing (305)；Main body (301) and the connecting pole (302) are hollow tubular structure, described
Main body (301) two ends are connected with the first bushing (101) and second bushing (201) respectively, and connecting pole (302) are same
Axle is arranged in the inner chamber of the main body (301), and forms annular space with the main body (301)；Connecting pole (302)
Lower end is connected with the second screw rod (202), and upper end is connected and turns on the first screw rod (102), forms oil transportation channel
(104)；First annular compartment (3011) and the second annular compartment (3012) has been sequentially arranged in the annular space, will be described
Annular space is sequentially divided into separate power fluid section (3013), bearing section (3014) and production fluid section (3015), described
First journal bearing (303), the thrust bearing (304) and institute have from top to bottom been sequentially arranged inside bearing section (3014)
State the second journal bearing (305)；Power fluid section (3013) are connected with power fluid passage (103), and with the power
At least one power fluid apertures (3016) is provided with the relative main body (301) the side wall of liquid section (3013), so that the power
Liquid section (3013) is connected with oil jacket annular space；Production fluid section (3015) are connected with production fluid passage (203), and with described
At least one output fluid apertures (3021) is provided with the relative connecting pole (302) the side wall of production fluid section (3015), so that institute
State production fluid section (3015) to connect with the oil transportation channel (104).
2. device according to claim 1, it is characterised in that described device also includes that tubing coupling (4), the oil pipe connect
Hoop (4) is arranged on the top of the first bushing (101) side wall, for connecting the oil pipe.
3. device according to claim 1, it is characterised in that described device also includes that tail pipe (5), tail pipe (5) set
Put in the bottom of the second bushing (201) side wall, for protecting the second bushing (201).
4. device according to claim 1, it is characterised in that the quantity at least two of power fluid apertures (3016),
And power fluid apertures (3016) are distributed around the even circumferential of the main body (301) side wall.
5. device according to claim 1, it is characterised in that the quantity at least two of output fluid apertures (3021),
And output fluid apertures (3021) are distributed around the even circumferential of the connecting pole (302) side wall.
6. device according to claim 1, it is characterised in that radially set on the side wall of connecting pole (302)
A circle raised step (3022) is equipped with, described thrust bearing (304) are located at the upper surface of the raised step (3022)；
Described thrust bearing (304) include upper bearing (metal) main body (3041), lower bearing main body (3042) and are sleeved on the upper shaft
Hold the outside thrust bearing shell (3043) of main body (3041) and the lower bearing main body (3042), the thrust bearing shell
(3043) be provided with toroidal membrane in the middle part of, described upper bearing (metal) main body (3041) are located at the upper surface of the toroidal membrane, described under
Bearing main body (3042) is arranged between the lower surface of the toroidal membrane and the raised step (3022).
7. device according to claim 1, it is characterised in that also set on main body (301) the side wall of drive assembly (3)
It is equipped with two oilholes (3017), the intracavity inter-connection of oilhole (3017) and the bearing section (3014).
8. device according to claim 1, it is characterised in that first annular compartment (3011) and second annular
Seal groove is provided with the madial wall of compartment (3012), sealing ring (307) in the seal groove, is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620936072.1U CN206017169U (en) | 2016-08-24 | 2016-08-24 | A kind of hydraulic driving screw pump lifting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620936072.1U CN206017169U (en) | 2016-08-24 | 2016-08-24 | A kind of hydraulic driving screw pump lifting device |
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| CN206017169U true CN206017169U (en) | 2017-03-15 |
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| CN201620936072.1U Active CN206017169U (en) | 2016-08-24 | 2016-08-24 | A kind of hydraulic driving screw pump lifting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152263A (en) * | 2017-07-12 | 2017-09-12 | 天津大港油田石油工程研究院钻采技术开发有限公司 | It is a kind of can No Load Start layering with periwinkle collecting bar lift tubing string |
-
2016
- 2016-08-24 CN CN201620936072.1U patent/CN206017169U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152263A (en) * | 2017-07-12 | 2017-09-12 | 天津大港油田石油工程研究院钻采技术开发有限公司 | It is a kind of can No Load Start layering with periwinkle collecting bar lift tubing string |
| CN107152263B (en) * | 2017-07-12 | 2019-05-21 | 天津大港油田石油工程研究院钻采技术开发有限公司 | It is a kind of can No Load Start layering with periwinkle collecting bar lifting column |
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