CN109488613A - Encapsulating method at a kind of Efficient safe intelligent electric immersed pump and line outlet - Google Patents

Encapsulating method at a kind of Efficient safe intelligent electric immersed pump and line outlet Download PDF

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Publication number
CN109488613A
CN109488613A CN201910032279.4A CN201910032279A CN109488613A CN 109488613 A CN109488613 A CN 109488613A CN 201910032279 A CN201910032279 A CN 201910032279A CN 109488613 A CN109488613 A CN 109488613A
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CN
China
Prior art keywords
impeller
outer barrel
immersed pump
annular
motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910032279.4A
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Chinese (zh)
Inventor
刘林满
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Hunan Saifu Industrial Technology Co Ltd
Original Assignee
Hunan Saifu Industrial Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hunan Saifu Industrial Technology Co Ltd filed Critical Hunan Saifu Industrial Technology Co Ltd
Priority to CN201910032279.4A priority Critical patent/CN109488613A/en
Publication of CN109488613A publication Critical patent/CN109488613A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00Pumping installations or systems
    • F04D13/02Units comprising pumps and their driving means
    • F04D13/06Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F04D13/086Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/08Sealings
    • F04D29/086Sealings especially adapted for liquid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/18Rotors
    • F04D29/22Rotors specially for centrifugal pumps
    • F04D29/2205Conventional flow pattern
    • F04D29/2222Construction and assembly
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/40Casings; Connections of working fluid
    • F04D29/42Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44Fluid-guiding means, e.g. diffusers
    • F04D29/445Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention discloses encapsulating methods at a kind of Efficient safe intelligent electric immersed pump and line outlet, wherein Efficient safe intelligent electric immersed pump, including outer barrel and the motor that outer inner barrel is arranged in, the bottom of outer barrel is provided with attached volute water conservancy diversion pedestal, impeller on motor shaft is extend into attached volute water conservancy diversion pedestal, by impeller rotation by oil liquid along attached volute water conservancy diversion pedestal be drawn into the circular passage between motor and outer barrel after oil liquid transferred out from the top opening of outer barrel.The present invention had both been avoided that the generation of bottom part ring stream, improved the transfer efficiency of oil liquid, and can avoid forming the axial force to impeller, to guarantee the operational safety of immersed pump and improve the service life of immersed pump.

Description

Encapsulating method at a kind of Efficient safe intelligent electric immersed pump and line outlet
Technical field
The present invention relates to encapsulating method at a kind of immersed pump and component more particularly to a kind of Efficient safe intelligent electric are latent Encapsulating method at liquid pump and line outlet.
Background technique
The immersed pump of transporting oil is broadly divided into four kinds by its main application: gas station's oil-immersed pump, oil depot (refuel Ship) oil-immersed pump, tank car oil filling riser emptying oil-immersed pump and oil well crude oil submersible electric pump are used, it is to produce oil liquid using impeller rotation Raw centrifugal force carrys out work, and machine shaft impeller and oil liquid do high speed rotary motion, work of the oil liquid in centrifugal force when work Under, it is thrown toward impeller outer edge, after being thrown out of under the influence of centrifugal force due to oil liquid, the inlet among impeller is formed very Sky, the oil liquid outside pump case will be pressed into pump case inner cavity under the action of atmospheric pressure, and impeller is made by gyrating It obtains oil liquid constantly to flow into and flow out under the action of impeller, has achieved the purpose that delivering oil.
In immersed pump work, (flow direction that arrow represents oil liquid) as shown in Figure 1, oil liquid is extracted by impeller 1, a part oil Circular passage of the liquid between motor 2 and pump housing shell 3, which moves up, to be extracted, but yet another part oil liquid can be in impeller 1 Region (a-quadrant in figure) between motor installation bottom plate 4 forms circulation, thus can there are the following problems:
One, circulation formed here can reduce effective output of oil liquid, to reduce the transfer efficiency of immersed pump;
Two, circulation formed here can generate a power axially downwardly along motor shaft 5 to impeller, long-term worked Cheng Zhong, the axial load of the bearing 6 of axial force meeting expanded motor, accelerates bearing failure, reduces the service life of motor;
Three, due in existing motor, the very small (place B in such as figure in gap between the bottom and pump housing end cap 7 of impeller 1 Show), in the long-term course of work, which can act on downwards impeller 1, so that the phase easily between pump housing end cap 7 of impeller 1 Mutual connection touches wiping, generates spark, this is extremely hazardous.
By retrieval, following several relevant patent documents are found:
One, Authorization Notice No. is 204476791 U of CN, and authorized announcement date is the Chinese utility model patent on July 15th, 2015 A kind of novel immersed pump impeller oil suction structure with flow deflector, including impeller are disclosed, the novel impeller oil suction structure is also Including being equipped with the motor installation bottom plate of motor, the pump housing shell of circular pump housing end cap and hollow tube-shape;Outside the pump housing Shell is arranged on the outer circle side of pump housing end cap, is enclosed between the pump housing shell, pump housing end cap and motor installation bottom plate The impeller operating room of pump housing inner cavity, the impeller is located in impeller operating room and its motor for being provided through motor installation bottom plate In shaft, it is provided with multiple tapped through holes in the motor installation bottom plate, on the pump housing end cap and is located at impeller operating room It is provided with multiple threaded holes on the inner face of side, is screwed by the tapped through hole that carrying bolt passes through the motor installation bottom plate In threaded hole on the inner face of the pump housing end cap, so that motor installation bottom plate support is connected to the pump housing end cap Inner face on, the novel impeller oil suction structure further includes being located at impeller to work indoor multiple flow deflectors, the multiple to lead Flow is uniformly arranged in the circumferential direction on the inner face of the pump housing end cap and it is blocked between the pump housing shell and impeller, institute It states on the vertical inner face that the pump housing end cap is set of multiple flow deflectors, one end of each flow deflector is arranged described On the inner face of pump housing end cap, other end is in contact with motor installation bottom plate.
Two, Authorization Notice No. is 204476790 U of CN, and authorized announcement date is the Chinese utility model on July 15th, 2015 Patent discloses a kind of novel impeller oil suction structure for immersed pump, including impeller, the novel impeller oil suction structure are also wrapped Include the pump housing shell of the motor installation bottom plate, circular pump housing end cap and hollow tube-shape that are equipped with motor;The pump housing shell It is arranged on the outer circle side of pump housing end cap, is enclosed pump between the pump housing shell, pump housing end cap and motor installation bottom plate The impeller operating room of intracoelomic cavity, the impeller is located in impeller operating room and its motor for being provided through motor installation bottom plate turns On axis, it is provided with multiple tapped through holes in the motor installation bottom plate, on the pump housing end cap and is located at impeller operating room one It is provided with multiple threaded holes on the inner face of side, institute is screwed by the tapped through hole that carrying bolt passes through the motor installation bottom plate It states in the threaded hole on the inner face of pump housing end cap, so that motor installation bottom plate support is connected to the pump housing end cap On inner face, the novel impeller oil suction structure further includes being located at the indoor multiple flow deflectors of impeller work, the multiple water conservancy diversion Piece is uniformly arranged in the circumferential direction on the inner face of the pump housing end cap and it is blocked between the pump housing shell and impeller, described On the vertical inner face that the pump housing end cap is arranged in of multiple flow deflectors, one end of each flow deflector is arranged in the pump On the inner face of body end lid, there are gaps between other end and motor installation bottom plate.
Three, Authorization Notice No. is 204476789 U of CN, and authorized announcement date is the Chinese utility model on July 15th, 2015 Patent discloses a kind of novel energy-conserving immersed pump pump body structure, and the novel energy-conserving immersed pump pump body structure includes circular pump Body end lid, the pump housing shell of hollow tube-shape, the motor installation bottom plate for being equipped with motor, impeller, bottom plate and protective net;The pump housing One end of shell is arranged on the outer circle side of pump housing end cap, and other end is oil outlet, is equipped with the motor installation of motor The inside of pump housing shell is arranged in bottom plate, and pump body structure inner cavity is enclosed between the motor installation bottom plate and pump housing shell Pumping chamber is enclosed the impeller work of pump body structure inner cavity between the pump housing shell, pump housing end cap and motor installation bottom plate Room is provided with multiple internal thread holes on the pump housing end cap and on the medial surface of impeller operating room side, in the motor Multiple motor installation bottom plate tapped through holes are provided on mounting base, it is logical across the motor installation bottom plate screw thread by carrying bolt Hole is screwed into the internal thread hole on the inner face of the pump housing end cap, so that motor installation bottom plate support is connected to institute On the inner face for stating pump housing end cap, the impeller is located in impeller operating room and its motor for being provided through motor installation bottom plate In shaft, line outlet is additionally provided on the pump housing shell, the extraction wire of motor leads to immersed pump through the line outlet Outside pump body structure, the outer fix of pump housing end cap is arranged in the bottom plate, and protective net is arranged in the bottom plate and pump housing end cap Between, the oil suction room of pump body structure inner cavity is enclosed between the bottom plate, protective net and pump housing end cap, in the pump housing end cap Multiple outside threaded holes are also provided on lateral surface that is upper and being located at oil suction room side, multiple base thread through-holes are provided on bottom plate, The base thread through-hole is passed through by bed bolt to be screwed into the outside threaded holes on the outer end face of the pump housing end cap, thus The bottom plate is connected on the outer end face of the pump housing end cap;The novel energy-conserving immersed pump pump body structure further includes being located at leaf Take turns the indoor multiple flow deflectors of work, the multiple flow deflector be uniformly arranged in the circumferential direction on the inner face of the pump housing end cap and It is blocked between the pump housing shell and impeller.
All there is the above problem in the immersed pump in above-mentioned several patents document.
To sum up, a kind of Efficient safe intelligent electric immersed pump how is designed, the generation of bottom circulation can be avoided, mentioned The transfer efficiency of high oil liquid and axial force to impeller is avoided the formation of, guarantee the safe operation of immersed pump and is improved making for immersed pump It is technical problem urgently to be solved with the service life.
Summary of the invention
The technical problem to be solved by the present invention is in view of the deficiencies in the prior art, provide a kind of Efficient safe Intelligent electric immersed pump had both been avoided that the generation of bottom part ring stream, improved the transfer efficiency of oil liquid, and can avoid being formed to impeller Axial force, to guarantee the operational safety of immersed pump and improve the service life of immersed pump.
In order to solve the above technical problems, the technical solution used in the present invention are as follows: a kind of Efficient safe intelligent electric is latent Liquid pump is provided with attached volute water conservancy diversion base in the bottom of outer barrel including outer barrel and the fire-proof motor that outer inner barrel is arranged in , the impeller in explosion-proof motor shaft is extend into attached volute water conservancy diversion pedestal, is rotated oil liquid by impeller along attached volute water conservancy diversion base Seat all transfers out oil liquid after being drawn into the circular passage between fire-proof motor and outer barrel from the top opening of outer barrel It goes.
Preferably, the attached volute water conservancy diversion pedestal includes hollow outer cylinder pedestal and the inner cylinder being arranged in inside outer cylinder base body Body has been provided with multiple flow deflectors between outer cylinder pedestal and inner cylinder, so that forming annular between outer cylinder pedestal and inner cylinder Flow-guiding channel;Explosion-proof motor shaft is protruded into from inner cylinder so that impeller is located at the bottom inlet of annular flow-guiding channel, annular water conservancy diversion The top exit in channel is connected with the circular passage between fire-proof motor and outer barrel, to be rotated at work by impeller Oil liquid is drawn into annular flow-guiding channel and is entered in the circular passage along annular flow-guiding channel.
Preferably, the impeller includes impeller body and the impeller passage that is arranged in inside impeller body, one end of impeller With fire-proof motor axis connection, the other end of impeller is inserted into the bottom opening of outer cylinder pedestal, the top port of impeller passage It is connected with the bottom inlet of annular flow-guiding channel, so that oil liquid enters from the bottom port of impeller passage when work, warp The top port for crossing impeller passage enters in the bottom inlet of annular flow-guiding channel.
Preferably, the outer cylinder pedestal inside portion at outer cylinder pedestal bottom port and there are gaps between impeller body.
Preferably, it is provided with shell lower flange at the bottom opening of outer barrel, is provided on shell lower flange for oil liquid By through-hole one, fire-proof motor is mounted on shell lower flange, in the top peripheral of the outer cylinder pedestal of attached volute water conservancy diversion pedestal It is provided with flange on face, fire-proof motor drive end bearing bracket is additionally provided between flange and shell lower flange, in fire-proof motor drive end bearing bracket On be provided with multiple fan-shaped pylones two passed through for oil liquid, using connecting screw pass through flange, fire-proof motor drive end bearing bracket and shell Lower flange connection, so that attached volute water conservancy diversion pedestal is connected on the bottom of outer barrel.
Preferably, explosion-proof motor shaft extend into attached volute water conservancy diversion pedestal after passing through shell lower flange and fire-proof motor drive end bearing bracket In, mechanical sealing member is provided in the explosion-proof motor shaft between fire-proof motor drive end bearing bracket and impeller.
Preferably, multiple outer barrel internal diversions are additionally provided on outer internal circumference surface in barrel and in annular flow-guiding channel Piece.
Preferably, it is provided with terminal box on the side of outer barrel, on the outer barrel side for being located at junction box also It is provided with packing box assembly, the packing box assembly includes the annular packing letter being arranged on outer barrel side and is arranged described Annular packing gland in annular packing letter, the outlet-pipe on fire-proof motor side passes through annular packing gland, so that outlet-pipe In cable enter in terminal box and be connected with the anti-explosion cable connector on junction box body, in outlet-pipe and annular packing letter It is wound with oil resistant soft seal item between inside, is inserted into annular packing letter by one end of annular packing gland and oil resistant is soft Sealing strip, which is pressed into contact on outer barrel side, carries out sealing at line outlet.
Preferably, be designed between the inner hole cylindrical surface of the annular packing letter and the external cylindrical surface of annular packing gland every Quick-fried joint surface.
Preferably, the terminal box includes box body and box cover, and anti-explosion cable connector is arranged on the side of box body.
Invention additionally discloses seal at a kind of line outlet of basis Efficient safe intelligent electric immersed pump as described above Method comprising following steps:
1) outlet-pipe of fire-proof motor side, is passed through outer barrel to extend into the annular packing letter of packing box assembly, by outlet The annular packing gland that cable in pipe passes through packing box assembly is connect with anti-explosion cable connector;
2), the oil resistant soft seal item of multi-turn is set between outlet-pipe and annular packing letter;
3), one end of annular packing gland is inserted into cyclic annular stuffing-box, using annular packing gland one end by oil resistant soft seal Item is pressed into contact on outer barrel side, recycles screw that will lock between annular packing letter and annular packing gland;
4) sealant, is injected into junction box body, on box cover locking to box body, will be completed again after the completion of injecting glue close at line outlet Envelope.
The beneficial effects of the present invention are: the present invention is being located at impeller working region provided with an attached volute water conservancy diversion base Seat, the oil liquid of extraction are conveyed out after being flowed into circular passage all along attached volute water conservancy diversion pedestal, will not be on impeller Circulation is formed at portion position improves the transfer efficiency of immersed pump so that effective output of oil liquid will not be reduced;In addition, due to Circulation will not be formed at upper impeller position, downward axial force would not be also generated to impeller, to guarantee immersed pump Operational safety and the service life for improving immersed pump.By the design to attached volute water conservancy diversion pedestal, formd being located at impeller One closed water conservancy diversion region is annular flow-guiding channel, and the oil liquid being thrown out of from impeller has fully entered annular flow-guiding channel, It further avoids part oil liquid and forms circulation at impeller top position.It is stayed between side and impeller body in outer cylinder base body There is gap, can be further ensured that during long-term work in this way, impeller will not collide between outer cylinder pedestal, further It ensure that safety when immersed pump operation.When assembling, as long as using connecting screw by outer cylinder pedestal, shell lower flange and explosion-proof Motor front end cover connects, to simplify assembling steps.By the way that fixing structure is arranged, so that can guarantee latent in assembling The concentricity of liquid pump rotating part improves to ensure that radial clearance when immersed pump works normally between each running gear The reliability of the oil-immersed pump.It is mechanical close by being provided in the explosion-proof motor shaft between fire-proof motor drive end bearing bracket and impeller Sealing avoids transported oil liquid and enters in bearing, dilutes and washes off the lubricating grease in bearing, substantially prolong the mistake of bearing The time is imitated, to improve the service life of immersed pump.By annular packing gland squeeze oil resistant soft seal item in the way of come into Row sealing, after the completion of sealing, oil resistant soft seal item can carry out deformation according to the outer circle face curvature of outer barrel, so that oil resistant Soft seal item can be closely fitted on the periphery of outer barrel, ensure that sealing effect.
Detailed description of the invention
Fig. 1 is the axial schematic cross-sectional view in part being located at impeller in existing immersed pump;
Fig. 2 is the axial schematic cross-sectional view of immersed pump in the embodiment of the present invention;
Fig. 3 is the axial schematic cross-sectional view in part being located at impeller in Fig. 2;
Fig. 4 is the axial schematic cross-sectional view of attached volute water conservancy diversion pedestal in Fig. 3;
Fig. 5 is the overlooking structure diagram of attached volute water conservancy diversion pedestal in the embodiment of the present invention;
Fig. 6 is the enlarged structure schematic diagram in the portion C in Fig. 3;
Fig. 7 is the partial structural diagram being located at terminal box in Fig. 2;
Fig. 8 is to be carried out at line outlet in the embodiment of the present invention using annular packing gland, annular packing letter and oil resistant soft seal item Vertical view cutting schematic illustration when sealing;
In figure: 1. impellers, 111. impeller bodies, 112. impeller passages, 2. fire-proof motors, 211. outlet-pipes, 212. electricity Cable, 3. pump housing shells, 4. fire-proof motor mounting bases, 5. explosion-proof motor shafts, 6. bearings, 7. pump housing end caps, 8. outer cylinders Body, 9. attached volute water conservancy diversion pedestals, 911. outer cylinder pedestals, 912. inner cylinders, 913. flow deflectors, 914. flanges, 9141. is recessed Seam allowance, 10. circular passages, 11. flow-guiding channels, 12. gaps, 13. shell lower flanges, 131. through-holes one, 14. anti-explosion electrics Machine drive end bearing bracket, 141. through-holes two, 142. male half couplings, 15. connecting screws, 16. mechanical sealing members, 17. terminal boxes, 171. Box body, 172. box covers, 18. annular packing letters, 19. annular packing glands, 191. outward flanges, 20. anti-explosion cable connectors, 21. oil resistant soft seal item, 22. screw holes, 23. sealants.
Specific embodiment
Further details of elaboration is done to technical solution of the present invention in the following with reference to the drawings and specific embodiments.
Embodiment: as shown in Figures 2 and 3, a kind of Efficient safe intelligent electric immersed pump, including outer barrel 8 and setting Fire-proof motor 2 inside outer barrel 8 is provided with attached volute water conservancy diversion pedestal 9 in the bottom of outer barrel 8, in explosion-proof motor shaft 5 Impeller 1 is extend into attached volute water conservancy diversion pedestal 9, is rotated by impeller 1 oil liquid being drawn into anti-explosion electric along attached volute water conservancy diversion pedestal 9 Oil liquid is transferred out from the top opening of outer barrel 8 after in circular passage 10 between machine 2 and outer barrel 8.The present embodiment exists It is provided with an attached volute water conservancy diversion pedestal positioned at impeller working region, the oil liquid of extraction can be flowed into along attached volute water conservancy diversion pedestal It is conveyed out after into circular passage, circulation will not be formed at upper impeller position, to improve the conveying of immersed pump Efficiency;In addition, downward axial force would not be also generated to impeller since circulation will not be formed at upper impeller position, from And it ensure that the operational safety of immersed pump and improve the service life of immersed pump.
As shown in Figures 3 to 5, the attached volute water conservancy diversion pedestal 9 includes hollow outer cylinder pedestal 911 and is arranged in outer cylinder base Inner cylinder 912 inside body 911 is provided with multiple flow deflectors 913, multiple flow deflectors between outer cylinder pedestal 911 and inner cylinder 912 913 helically rise shape setting, so that forming the flow-guiding channel 11 of annular between outer cylinder pedestal 911 and inner cylinder 912;Anti-explosion electric Arbor 5 is protruded into from inner cylinder 912 so that impeller 1 is located at the bottom inlet of annular flow-guiding channel 11, annular flow-guiding channel 11 Circular passage 10 between top exit and fire-proof motor and outer barrel is connected, thus at work will by the rotation of impeller 1 Oil liquid is drawn into annular flow-guiding channel 11 and enters in the circular passage 10 along annular flow-guiding channel 11.It is set by above-mentioned It sets and is foring the i.e. annular flow-guiding channel in a closed water conservancy diversion region at impeller, the oil liquid being thrown out of from impeller is whole Annular flow-guiding channel is entered, part oil liquid is further avoided and forms circulation at impeller top position.
The impeller 1 includes impeller body 111 and the impeller passage 112 being arranged in inside impeller body 111, impeller 1 One end is connect with explosion-proof motor shaft 5, and the other end of impeller 1 is inserted into the bottom opening of outer cylinder pedestal 911, impeller 1 it is another The liquid sucting port end of outer one end, that is, impeller, the top port of impeller passage 112 are connected with the bottom inlet of annular flow-guiding channel 11, So that oil liquid enters from the bottom port of impeller passage 112 when work, entered by the top port of impeller passage 112 In the bottom inlet of annular flow-guiding channel 11.In this way, can be further such that the oil liquid all thrown away by impeller be directly entered Into annular flow-guiding channel, the formation of bottom circulation is further avoided.
As shown in Figure 3 and Figure 4,911 inside portion of outer cylinder pedestal at outer cylinder pedestal bottom port and impeller body 111 Between there are gaps 12.By the way that gap is arranged here, it can be further ensured that during long-term work, avoid because of immersed pump The axial gap of axis becomes larger and causes the problem of colliding between impeller and outer cylinder pedestal, further ensures immersed pump Safety when operation.
It is provided with shell lower flange 13 at the bottom opening of outer barrel 8, is provided on shell lower flange 13 for oil liquid By through-hole 1, fire-proof motor 2 is mounted on shell lower flange 13, in the outer cylinder pedestal 911 of attached volute water conservancy diversion pedestal It is provided with flange 914 on top peripheral face, fire-proof motor drive end bearing bracket is additionally provided between flange 914 and shell lower flange 13 14, it is provided with the through-hole 2 141 passed through for oil liquid on fire-proof motor drive end bearing bracket 14, passes through flange 914 using connecting screw 15 With shell lower flange 13 to which attached volute water conservancy diversion pedestal 9 to be connected on the bottom of outer barrel 8.In the prior art, immersed pump The assembling of bottom is sufficiently complex, and the present embodiment is designed by structure, in assembling, as long as using connecting screw by outer cylinder Pedestal, shell lower flange and fire-proof motor drive end bearing bracket connect, to simplify assembling steps.
As shown in figure 5, concave mouth 9141 is provided on the medial surface of the flange 914, on fire-proof motor drive end bearing bracket 14 It is provided with the male half coupling 142 to match with concave mouth 9141, when assembling, passes through the concave mouth 9141 and male half coupling 142 matches It closes, fire-proof motor drive end bearing bracket 14 and attached volute water conservancy diversion pedestal 9 is positioned.In immersed pump, rotating part (such as impeller) is The key position of entire immersed pump, concentricity herein is extremely important, if it cannot be guaranteed that concentricity herein, just will appear very More problems.The present embodiment is by setting fixing structure, so that can guarantee the concentricity of immersed pump rotating part in assembling, from And it ensure that the reliability of immersed pump work.
As shown in figure 3, explosion-proof motor shaft 5 extend into attached volute after passing through shell lower flange 13 and fire-proof motor drive end bearing bracket 14 In water conservancy diversion pedestal 9, mechanical sealing member is provided in the explosion-proof motor shaft 5 between fire-proof motor drive end bearing bracket 14 and impeller 1 16, mechanical sealing member 16 includes the stationary seal ring and rotary packing ring set gradually from top to bottom.In the prior art, do not have herein There is installation sealing element, so in the actual working process, some oil liquid (such as aviation kerosine) can enter explosion-proof motor shaft Bearing in, the lubricating grease in bearing is washed off, to reduce the service life of entire immersed pump, the present embodiment is by herein Place adds mechanical sealing member, and oil liquid is avoided to enter in bearing, to improve the service life of immersed pump.
As shown in Fig. 2, being additionally provided in multiple outer barreies on 8 inner peripheral surface of outer barrel and in annular flow-guiding channel 11 Portion's flow deflector (not shown), multiple outer barrel internal diversion pieces helically rise shape setting.When by attached volute water conservancy diversion pedestal After the oil liquid of submitting enters in annular flow-guiding channel 11, transferred out using the guide functions of outer barrel internal diversion piece, this Sample can further increase the transfer efficiency of immersed pump.
As shown in figs. 2,7 and 8, it is provided with terminal box 17 on the side of outer barrel 8, is being located inside terminal box 17 8 side of outer barrel on be additionally provided with packing box assembly, the packing box assembly includes the ring-type being arranged on 8 side of outer barrel Stuffing-box 18 and the annular packing gland 19 being arranged in the annular packing letter 18, the outlet-pipe 211 on 2 side of fire-proof motor Across annular packing gland 19 so that the cable 212 in outlet-pipe 211 enter in terminal box 17 and on junction box body 17 Anti-explosion cable connector 20 is connected, and is provided with oil resistant soft seal item 21 between 18 inside of outlet-pipe 211 and annular packing letter, leads to The one end for crossing annular packing gland 19 is inserted into annular packing letter 18 and by oil resistant soft seal 21(such as Teflon sealing strip Deng) it is pressed into contact with the sealing at progress line outlet on 8 side of outer barrel.When being sealed, due to outer barrel be it is circular (such as Shown in Fig. 8), if be sealed using common sealing ring, sealing ring cannot be bonded the periphery of outer barrel well, from And will lead to sealing it is unreliable, and the present embodiment by annular packing gland squeeze oil resistant soft seal item in the way of it is close to carry out Envelope, after the completion of sealing, oily soft seal item can carry out deformation according to the outer circle face curvature of outer barrel, so that oil resistant soft seal Item can be closely fitted on the periphery of outer barrel, ensure that sealing effect.
It is provided with screw hole 22 on one end of annular packing letter 18, is provided in 19 other end of annular packing gland outer Flange 191 passes through the outward flange using screw after one end of annular packing gland 19 is inserted into annular packing letter 18 191 are screwed into screw hole 22, so that oil resistant soft seal item is pressed into contact in outer barrel side using annular packing gland one end On.
As shown in fig. 7, the terminal box 17 includes box body 171 and box cover 172, anti-explosion cable connector 20 is arranged in box body On 171 side.
As shown in figs. 2,7 and 8, a kind of basis Efficient safe intelligent electric as described above is also disclosed in the present embodiment Encapsulating method at the line outlet of immersed pump comprising following steps:
1) outlet-pipe 211 of fire-proof motor side, is passed through outer barrel 8 to extend into the annular packing letter 18 of packing box assembly, The annular packing gland 19 that cable 212 in outlet-pipe 211 passes through packing box assembly is connect with anti-explosion cable connector 20;
2), the oil resistant soft seal item 21 of multi-turn is set between outlet-pipe 211 and annular packing letter 18;
3), one end of annular packing gland 19 is inserted into cyclic annular stuffing-box 18, using 19 one end of annular packing gland by oil resistant Soft seal item 21 is pressed into contact on 8 side of outer barrel, recycle screw by annular packing letter 18 and annular packing gland 19 it Between lock;After packing box assembly is tightened by bolts, inner hole cylindrical surface and the annular packing gland 19 of the annular packing letter 18 An effective flameproof joint is then formed between external cylindrical surface;
4) sealant 23, is injected into junction box body 17, and box cover 172 is locked on box body 171 again after the completion of injecting glue, is completed out It is sealed at line mouth.
The present embodiment enables oil resistant soft seal item to be closely fitted in the outer circle of outer barrel by above-mentioned encapsulating method On face, the sealing effect at line outlet ensure that.
To sum up, the present invention is being located at impeller working region provided with an attached volute water conservancy diversion pedestal, and the oil liquid of extraction can be complete Portion is conveyed out after being flowed into circular passage along attached volute water conservancy diversion pedestal, and circulation will not be formed at upper impeller position, To which effective output of oil liquid will not be reduced, the transfer efficiency of immersed pump is improved;In addition, due to will not be in upper impeller position Place forms circulation, and downward axial force would not be also generated to impeller, to guarantee the operational safety of immersed pump and improve latent liquid The service life of pump.By the design to attached volute water conservancy diversion pedestal, a closed water conservancy diversion region is formd being located at impeller I.e. annular flow-guiding channel, the oil liquid being thrown out of from impeller have fully entered annular flow-guiding channel, further avoid part oil Liquid forms circulation at impeller top position.There are gaps between side and impeller body in outer cylinder base body, in this way can be into one Step guarantees that during long-term work, impeller will not collide between outer cylinder pedestal, further ensures immersed pump operation When safety.When assembling, as long as outer cylinder pedestal, shell lower flange have been connected with fire-proof motor drive end bearing bracket using connecting screw Come, to simplify assembling steps.By the way that fixing structure is arranged, so that can guarantee the same of immersed pump rotating part in assembling Heart degree improves the reliability of the oil-immersed pump to ensure that radial clearance when immersed pump works normally between each running gear. By being provided with mechanical sealing member in the explosion-proof motor shaft between fire-proof motor drive end bearing bracket and impeller, avoids and conveyed Oil liquid enter in bearing, dilute and wash off the lubricating grease in bearing, substantially prolong the out-of-service time of bearing, to improve The service life of immersed pump.It is sealed in the way of annular packing gland extruding oil resistant soft seal item, when sealing is completed Afterwards, oil resistant soft seal item can carry out deformation according to the outer circle face curvature of outer barrel, so that oil resistant soft seal item can be close Be fitted on the periphery of outer barrel, ensure that sealing effect.
" multiple " described in above embodiments refer to the quantity of " two or more ".Above embodiments are only for explanation The present invention is used, rather than limitation of the present invention, and person skilled in the relevant technique is not departing from spirit and model of the invention In the case where enclosing, can also make a variety of changes or convert, thus all equivalent technical solutions also should belong to it is of the invention Protection scope, protection scope of the present invention should be limited by each claim.

Claims (10)

1. a kind of Efficient safe intelligent electric immersed pump, including outer barrel and the motor that outer inner barrel is arranged in, feature It is: the bottom of outer barrel is provided with attached volute water conservancy diversion pedestal, the impeller on motor shaft is extend into attached volute water conservancy diversion pedestal, By impeller rotation by oil liquid along attached volute water conservancy diversion pedestal be drawn into the circular passage between motor and outer barrel after by oil liquid It is transferred out from the top opening of outer barrel.
2. Efficient safe intelligent electric immersed pump according to claim 1, it is characterised in that: the attached volute water conservancy diversion base Seat includes hollow outer cylinder pedestal and the inner cylinder being arranged in inside outer cylinder base body, has been provided between outer cylinder pedestal and inner cylinder Multiple flow deflectors, so that forming the flow-guiding channel of annular between outer cylinder pedestal and inner cylinder;Motor shaft protruded into from inner cylinder so that Impeller is located at the bottom inlet of annular flow-guiding channel, the ring between the top exit and motor and outer barrel of annular flow-guiding channel Shape channel is connected, so that oil liquid is drawn into annular flow-guiding channel by impeller rotation at work and led to along annular water conservancy diversion Road enters in the circular passage.
3. Efficient safe intelligent electric immersed pump according to claim 1, it is characterised in that: the impeller includes impeller The other end of ontology and the impeller passage being arranged in inside impeller body, one end of impeller and motor axis connection, impeller is inserted into Into the bottom opening of outer cylinder pedestal, the top port of impeller passage is connected with the bottom inlet of annular flow-guiding channel, thus So that oil liquid enters from the bottom port of impeller passage when work, it is logical to enter annular water conservancy diversion by the top port of impeller passage In the bottom inlet in road.
4. Efficient safe intelligent electric immersed pump according to claim 3, it is characterised in that: be located at outer cylinder pedestal bottom Outer cylinder pedestal inside portion at port and there are gaps between impeller body.
5. Efficient safe intelligent electric immersed pump according to claim 3, it is characterised in that: opened in the bottom of outer barrel It is provided with shell lower flange at mouthful, the through-hole one passed through for oil liquid is provided on shell lower flange, motor is mounted on shell laxative remedy Lan Shang is provided with flange on the top peripheral face of the outer cylinder pedestal of attached volute water conservancy diversion pedestal, flange and shell lower flange it Between be additionally provided with motor front end cover, the through-hole two passed through for oil liquid is provided on motor front end cover, is passed through using connecting screw Flange, motor front end cover and shell lower flange are to which attached volute water conservancy diversion pedestal to be connected on the bottom of outer barrel.
6. Efficient safe intelligent electric immersed pump according to claim 5, it is characterised in that: motor shaft passes through under shell It is extend into after flange and motor front end cover in attached volute water conservancy diversion pedestal, on the motor shaft between motor front end cover and impeller It is provided with mechanical sealing member.
7. Efficient safe intelligent electric immersed pump according to claim 2, it is characterised in that: on outer internal circumference surface in barrel And it is located in annular flow-guiding channel and is additionally provided with multiple outer barrel internal diversion pieces.
8. Efficient safe intelligent electric immersed pump as claimed in any of claims 1 to 7, it is characterised in that: It is provided with terminal box on the side of outer barrel, is additionally provided with packing box assembly on the outer barrel side for being located at junction box, The packing box assembly includes the annular packing letter being arranged on outer barrel side and the ring that is arranged in the annular packing letter Shape gland, the outlet-pipe on motor side passes through annular packing gland, so that the cable in outlet-pipe enters terminal box In and be connected with the anti-explosion cable connector on junction box body, it is soft to be provided with oil resistant between outlet-pipe and annular packing letter inside Sealing strip is inserted into annular packing letter by one end of annular packing gland and oil resistant soft seal item is pressed into contact in outer cylinder Sealing at line outlet is carried out in the portion of side.
9. Efficient safe intelligent electric immersed pump according to claim 8, it is characterised in that: the terminal box includes box Body and box cover, anti-explosion cable connector are arranged on the side of box body.
10. encapsulating method at a kind of line outlet of Efficient safe intelligent electric immersed pump according to claim 9, special Sign is: the following steps are included:
1) outlet-pipe of motor side, is passed through outer barrel to extend into the annular packing letter of packing box assembly, it will be in outlet-pipe Cable pass through packing box assembly annular packing gland connect with anti-explosion cable connector;
2), the oil resistant soft seal item of multi-turn is set between outlet-pipe and annular packing letter;
3), one end of annular packing gland is inserted into cyclic annular stuffing-box, using annular packing gland one end by oil resistant soft seal Item is pressed into contact on outer barrel side, recycles screw that will lock between annular packing letter and annular packing gland;
4) sealant, is injected into junction box body, on box cover locking to box body, will be completed again after the completion of injecting glue close at line outlet Envelope.
CN201910032279.4A 2019-01-14 2019-01-14 Encapsulating method at a kind of Efficient safe intelligent electric immersed pump and line outlet Pending CN109488613A (en)

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