CN205937102U - Spiral shell sucker -rod pumping directly drives oil leak drainage structure of motor - Google Patents

Abstract

The utility model relates to a spiral shell sucker -rod pumping directly drives oil leak drainage structure of motor, including the motor main part, the sucker rod, the center sealed tube, hollow spindle, axle bearing seat, shaft coupling and motor bottom support, the sucker rod runs through the motor main part, the outside at the sucker rod is established to the sealed pipe box in center, axle bearing seat is located the outside of central sealed tube, terminal surface pressing shaft bearing seat up end in the shaft coupling, hollow spindle is located between shaft coupling and the axle bearing seat, and it is fixed mutually with the shaft coupling that hollow spindle passes through the parallel key, be fixed with the sealed sleeve pipe of support on the support of motor bottom, the support seals up the sleeve pipe, hollow spindle and central sealed tube form the cavity, the inside oil leak passageway that still is equipped with of motor bottom support, the motor bottom support outside still is equipped with the oil leak hole, cavity, oil leak passageway and oil leak hole communicate each other. The utility model discloses not only can avoid the former oil pollution of scene and equipment, also can alleviate the time pressure of changing the sealing member simultaneously.

Description

A kind of oil leak flow guiding structure of screw pump direct-drive motor

Technical field

This utility model belongs to screw-pump oil-extraction equipment field, relates in particular to a kind of oil leak of screw pump direct-drive motor Flow guiding structure.

Background technology

At present, the commonly used two kinds of sealing structures of Screw Pump of Oil Field ground pumping unit, a kind of packing for motor bottom Sealing, another is the mode of the mechanical seal of motor shaft head, and the former needs often to adjust packing thrust and easily leak Oil, preferably, but structure is complex for the latter's sealing effectiveness, slightly deal with improperly will seal failure, and both sealings one Denier seal failure, the consequence leading to is exactly that well Crude Oil drains to and causes environmental pollution above motor, and motor cleaning is number simultaneously It is tired of and there is also certain potential safety hazard, after needing to shut down, be cleaned also have impact on production.

Although having improved through scheme in recent years, such as：Patent《The sealing dress of screw pump direct-drive motor seal pipe Put 2012205426721》,《Screw pump direct-drive motor shaft extending portion sealing device 2012205426717》、《A kind of directly-driven screw pump Seal combination pressure relief device 2011201296739》、《Screw pump ground driving device mechanically-sealing apparatus 200720017222X》、《A kind of sealing structure 201210160425X on vertical machine driving device for directly-driven screw pump》、《Electricity Seal structure 200720194837X in machine direct-drive screw pump driving means》, the sealing longevity be increased on certain depth Life.

But it is consumable accessory as sealing, when always having seal failure, now can only view crude oil and spill and just know Road seal failure needs to change, and now crude oil spills or be splashed on the ground around outer surface of motor and equipment, dirty Dye is serious, and cleaning is difficult, needs downtime impact to produce, existing best technique does not all solve this problem.

Content of the invention

In order to solve above-mentioned technical problem, the purpose of this utility model is to provide a kind of oil leak of screw pump direct-drive motor Flow guiding structure, this sealing structure effect is good, and can be prevented effectively from equipment pollution, reduces cleaning time, improve production efficiency.

To achieve these goals, this utility model employs following technical scheme：

A kind of oil leak flow guiding structure of screw pump direct-drive motor, including motor body, sucker rod, central seal pipe, hollow Main shaft, bearing wedge, shaft coupling and motor bottom bearing, described sucker rod runs through motor body, and described central seal pipe box sets In the outside of sucker rod, described bearing wedge is located at the outside of central seal pipe, described shaft coupling inner face compression axis Pressure Block Upper surface, described hollow spindle is located between shaft coupling and bearing wedge, and hollow spindle is fixed with shaft coupling phase by flat key, The lower section of described bearing wedge is provided with sealed bearings, the Internal and external cycle of sealed bearings respectively with central seal pipe and hollow spindle phase Support, described motor bottom bearing is fixed with Seat Seal sleeve pipe, described Seat Seal sleeve pipe, hollow spindle and central seal pipe Form cavity, be additionally provided with oil leak passage inside described motor bottom bearing, described motor bottom support outer is additionally provided with oil leaking hole, Described cavity, oil leak passage and oil leaking hole are interconnected.

Preferably：It is additionally provided with the first round nut, described first circle between the upper end of central seal pipe and sucker rod Nut is provided with external screw thread, and central seal pipe is provided with female thread, and described first round nut is crossed screw thread with central seal Gutron and joined Close and mutually fix.This structure effectively prevents central seal pipe from chewing sealing ring, simultaneously central seal pipe spindle nose can process suitable Chamfering, convenient installation and protection sealing member.

Preferably：It is further fixed on the second round nut on the central seal pipe of the bottom of described motor bottom bearing, The lower section of described second round nut is fixed with nut pressing plate.Fixed using pressing plate, prevent because after nut loosening oil leak in bearing Portion.

Preferably：It is sequentially provided with tightening trim ring, disk from top to bottom between the upper end of described shaft coupling and sucker rod Root sealing ring and metal gasket, and packing_seal circle is multiple stackings.

Preferably：The top of described shaft coupling is provided with multiple screwed holes, and the adapter atop side of being fixed with clamp, Described side's clamp is also fixed with sucker rod phase.

Preferably：The bottom of described bearing wedge is fixed with the fixing lid of sealing also by cruciform slot screw.

In motor bottom bearing of the present utility model, sealing sleeve pipe is installed, bearing is machined with oil leaking hole so that bearing is close Form airtight cavity, after the seal failure of spindle nose, so that working as sealing member between big envelope pipe, hollow spindle and central seal pipe The liquid spilling after inefficacy passes through this cavity and flows out from the through hole of rest base, because bearing is fixture, therefore can lead to Cross to drain in the vessel such as bottle and collect, so not only can avoid the crude oil pollution of scene and equipment, can also alleviate simultaneously The time pressure of replacing sealing member, can collect the crude oil spilling in the short time in the way of using draining into bottle and motor is permissible Normal operation, carries out shutting down changing after novel sealing puts in place again, and common structure is seriously polluted to outside due to oil leak Need to carry out the live cleaning with motor and the sealing member more renewing in time, more urgent on the time.

Brief description

Fig. 1 is structural representation of the present utility model.

Fig. 2 is cross-sectional view of the present utility model.

Fig. 3 is that this utility model oil circuit in oil leak moves towards schematic diagram.

Specific embodiment

Embodiment of the present utility model is described below in detail, the example of described embodiment is shown in the drawings, wherein ad initio To the element that same or similar label represents same or similar element or has same or like function eventually.Below by ginseng The embodiment examining Description of Drawings is exemplary it is intended to be used for explaining this utility model, and it is not intended that to this utility model Restriction.

In description of the present utility model it is to be understood that term " " center ", " longitudinal ", " horizontal ", " length ", " width Degree ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " up time The orientation of instruction such as pin ", " counterclockwise " or position relationship are based on orientation shown in the drawings or position relationship, are for only for ease of Description this utility model and simplify description, rather than instruction or the hint device of indication or element must have specific orientation, With specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.

Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or hint relative importance Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or Implicitly include one or more this feature.In description of the present utility model, unless otherwise stated, the implication of " multiple " It is two or more, limit unless otherwise clear and definite.

In this utility model, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " Gu Fixed " etc. term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can To be to be mechanically connected or electrical connection；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, Ke Yishi The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood as the case may be Concrete meaning in this utility model.

In this utility model, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it D score can include the first and second feature directly contacts it is also possible to include the first and second features not to be directly contact but logical Cross the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " include the One feature is directly over second feature and oblique upper, or to be merely representative of fisrt feature level height be higher than second feature.First is special Levy second feature " under ", " lower section " and " below " include fisrt feature immediately below second feature and obliquely downward, or only Represent that fisrt feature level height is less than second feature.

A kind of screw pump direct-drive motor sealing structure as shown in Figure 1-Figure 3, close including motor body, sucker rod 1, center Tube sealing 2, hollow spindle 3, bearing wedge 4, shaft coupling 5 and motor bottom bearing 6, described sucker rod 1 runs through motor body, described Central seal pipe 2 is set in the outside of sucker rod 1, and the outside on described central seal pipe 2 top is fixed with stationary ring also by screw It is provided with the first sealing ring, the lower section of described stationary ring 11 is provided with rotating ring 12, described quiet between 11, and stationary ring 11 and central seal pipe 2 Ring 11 and rotating ring 12 end face seal, the upper end of described bearing wedge 4 is located at the outside of stationary ring 11 and rotating ring 12, and bearing wedge 4 Middle part mutually fix with rotating ring 12, described bearing wedge 4 upper end is provided with external screw thread, and described shaft coupling 5 passes through spiral shell with bearing wedge 4 Stricture of vagina cooperation is mutually fixed, and shaft coupling 5 inner face compresses described bearing wedge 4 upper surface, and described hollow spindle 3 is located at shaft coupling 5 And bearing wedge 4 between, and hollow spindle 3 is mutually fixed with shaft coupling 5 by flat key 17, described shaft coupling 5 and bearing wedge 4, It is equipped with O-ring seals 18 between shaft coupling 5 and hollow spindle 3, bearing wedge 4 and hollow spindle 3, described bearing wedge 4 It is additionally provided with y-shaped ring 13, the lower section of described bearing wedge 4 is provided with two sealed bearings 16 between lower end and central seal pipe 2, The Internal and external cycle of sealed bearings 16 is offseted with central seal pipe 2 and hollow spindle 3 respectively, and described motor bottom bearing 6 is fixed with Seat Seal sleeve pipe 61, described Seat Seal sleeve pipe 61, hollow spindle 3 and central seal pipe 2 form cavity, described motor bottom It is additionally provided with oil leak passage 62 inside bearing 6, outside described motor bottom bearing 6, is additionally provided with oil leaking hole 63, described cavity, oil leak are led to Road 62 and oil leaking hole 63 are interconnected, described Seat Seal sleeve pipe 61 and hollow spindle 3, motor bottom bearing 6 and Seat Seal It is equipped with the second sealing ring 66 between sleeve pipe 61, motor bottom bearing 6 and central seal pipe 2.

It is additionally provided with the first round nut 10 between the upper end of central seal pipe 2 and sucker rod 1, described first round nut 10 sets There is external screw thread, central seal pipe 2 is provided with female thread, described first round nut 10 coordinates phase with central seal pipe 2 by screw thread Fixing.Second round nut 64, described second circle spiral shell are further fixed on the central seal pipe 2 of the bottom of described motor bottom bearing 6 Female 64 lower section is fixed with nut pressing plate 65.Described y-shaped ring 13 be between two-layer, and two-layer y-shaped ring 13 pass through every Disconnected steel ring 14 separates.

Be sequentially provided with from top to bottom between the upper end of described shaft coupling 5 and sucker rod 1 tightening trim ring 7, packing_seal circle 8 and Metal gasket 9, and packing_seal circle 8 is multiple stackings.The top of described shaft coupling 5 is provided with multiple screwed holes 51, and shaft coupling 5 pushes up The side of being fixed with of portion clamp 19, described side's clamp 19 is also mutually fixed with sucker rod 1.The bottom of described bearing wedge 4 is also by cross Grooved screw is fixed with the fixing lid 15 of sealing.

It should be pointed out that above example is only representative example of the present utility model.This utility model can also have many Deformation.Every any simple modification, equivalent variations and modification above example made according to essence of the present utility model, all It is considered as belonging to protection domain of the present utility model.

Claims (6)

1. a kind of oil leak flow guiding structure of screw pump direct-drive motor it is characterised in that：Including motor body, sucker rod（1）, center Seal pipe（2）, hollow spindle（3）, bearing wedge（4）, shaft coupling（5）With motor bottom bearing（6）, described sucker rod（1）Pass through Wear motor body, described central seal pipe（2）It is set in sucker rod（1）Outside, described bearing wedge（4）Positioned at central seal Pipe（2）Outside, described shaft coupling（5）Inner face compression axis Pressure Block（4）Upper surface, described hollow spindle（3）Positioned at shaft coupling Device（5）With bearing wedge（4）Between, and hollow spindle（3）By flat key（17）With shaft coupling（5）Mutually fix, described bearing pressure Seat（4）Lower section be provided with sealed bearings（16）, sealed bearings（16）Internal and external cycle respectively with central seal pipe（2）And hollow spindle （3）Offset, described motor bottom bearing（6）On be fixed with Seat Seal sleeve pipe（61）, described Seat Seal sleeve pipe（61）, hollow Main shaft（3）With central seal pipe（2）Form cavity, described motor bottom bearing（6）Inside is additionally provided with oil leak passage（62）, described Motor bottom bearing（6）Outside is additionally provided with oil leaking hole（63）, described cavity, oil leak passage（62）And oil leaking hole（63）Mutually interconnect Logical.

2. a kind of screw pump direct-drive motor according to claim 1 oil leak flow guiding structure it is characterised in that：Central seal Pipe（2）Upper end and sucker rod（1）Between be additionally provided with the first round nut（10）, described first round nut（10）It is provided with outer spiral shell Stricture of vagina, central seal pipe（2）It is provided with female thread, described first round nut（10）With central seal pipe（2）Phase is coordinated by screw thread Fixing.

3. a kind of screw pump direct-drive motor according to claim 1 oil leak flow guiding structure it is characterised in that：Described motor Bottom support bracket（6）Bottom central seal pipe（2）On be further fixed on the second round nut（64）, described second round nut（64）'s Lower section is fixed with nut pressing plate（65）.

4. a kind of screw pump direct-drive motor according to claim 1 oil leak flow guiding structure it is characterised in that：Described shaft coupling Device（5）Upper end and sucker rod（1）Between be sequentially provided with tightening trim ring from top to bottom（7）, packing_seal circle（8）And metal gasket （9）, and packing_seal circle（8）For multiple stackings.

5. a kind of screw pump direct-drive motor according to claim 1 oil leak flow guiding structure it is characterised in that：Described shaft coupling Device（5）Top be provided with multiple screwed holes（51）, and shaft coupling（5）The top side of being fixed with clamp（19）, described side's clamp（19） Also with sucker rod（1）Mutually fix.

6. a kind of screw pump direct-drive motor according to claim 1 oil leak flow guiding structure it is characterised in that：Described bearing Wedge（4）Bottom be fixed with the fixing lid of sealing also by cruciform slot screw（15）.