CN207018254U - A kind of Double-casing single-stage double-suction pump - Google Patents
A kind of Double-casing single-stage double-suction pump Download PDFInfo
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- CN207018254U CN207018254U CN201720883003.3U CN201720883003U CN207018254U CN 207018254 U CN207018254 U CN 207018254U CN 201720883003 U CN201720883003 U CN 201720883003U CN 207018254 U CN207018254 U CN 207018254U
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- flow passage
- bushing pipe
- passage part
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- 230000008676 import Effects 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 239000012530 fluid Substances 0.000 claims abstract description 10
- 238000005213 imbibition Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000005242 forging Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 8
- 238000005260 corrosion Methods 0.000 abstract description 7
- 238000005086 pumping Methods 0.000 abstract description 6
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 239000008186 active pharmaceutical agent Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Fluid machinery technical field is the utility model is related to, refers in particular to a kind of Double-casing single-stage double-suction pump, including the pump housing, pump shaft, impeller, left pump cover, right pump cover, axle sleeve, left flow passage part, right flow passage part, import bushing pipe and outlet bushing pipe；Import bushing pipe, left flow passage part, right flow passage part and outlet bushing pipe form inner housing, and left pump cover, the pump housing and right pump cover form shell body；Pump shaft is exported bushing pipe and left flow passage part is removably attachable to left pump cover, right flow passage part and mechanical sealing parts are removably attachable to right pump cover by unilateral bearings.Single-stage double-suction pump of the present utility model designs double-shell structure, enhances the wear-corrosion resistance of pump；Pump shaft is non-penetrating design, and unilateral low pressure shaft seal can be achieved, add the reliability of sealing, simplify sealing accessory system；Critical piece is removably attachable to the pump housing or pump cover, easy to disassemble after termination of pumping and maintenance pump main body and part.
Description
Technical field
Fluid machinery technical field is the utility model is related to, more specifically to a kind of Double-casing single-stage double-suction pump.
Background technology
For single-stage double-suction pump as a kind of centrifugal pump, it has larger flow and preferable suction performance compared with single suction pump,
Compared with mixed-flow pump, there is higher lift.Moreover, single-stage double-suction pump is because impeller waterpower is symmetrical, caused axial force it is small or
Almost there is no axial force.
The fluid media (medium) used be high temperature, containing in the case of solid, it is necessary to which flow passage components material has certain wearability.
However, generally use American Petroleum Institute（API）The single-stage double-suction pump of normal structure is difficult to set full wear-resistant liner.So, it is right
In the common single hull structure of single-stage double-suction pump, it is necessary to lift overall material property, cost is higher, or periodic replacement
Flow passage components, add the cost that flow passage components are changed in demolition and maintenance.In addition, single-stage double-suction pump generally use both ends support, it is right
Answer API pattern BB1 axial subdivisions or BB2 radially split types.However, both ends supporting construction means to have the sealing of dynamic sealing at two
Point, Mechanical Seal Auxiliary System is more complicated, and reliability is low.
Currently for the technical scheme of double casing volute pump, the Chinese patent of Patent No. 201420515522.0 discloses
A kind of wear resistant corrosion resistant double casing volute pump, its technical scheme refer to a kind of single-stage single suction pump of full wear-resistant liner, although
It has the technical characterstic of wear resistant corrosion resistant, but is dfficult to apply to double entry pump field；The China of Patent No. 201620216682.4
A kind of horizontal single-stage double entry pump disclosed in patent, although having, inspection and maintenance is convenient, change part need not separate pipeline technology
Feature, but can not solve to seal the problem of accessory system is more complicated, and reliability is low.
Utility model content
The utility model aims to provide a kind of Double-casing single-stage double-suction pump, to solve traditional single stage double entry pump wear resistant corrosion resistant
Poor performance or demolition and maintenance flow passage components bring high cost, and Mechanical Seal Auxiliary System is more complicated, and sealing reliability is low
Problem, the defects of prior art is present is overcome to a certain extent.
According to the Double-casing single-stage double-suction pump of the utility model embodiment, including the pump housing, pump shaft, axle sleeve, impeller, the pump
Intracoelomic cavity is hollow, and the axle sleeve and the impeller are arranged on the pump shaft by key, in addition to left pump cover, right pump cover, left mistake
Flow part, right flow passage part, import bushing pipe and outlet bushing pipe；The import bushing pipe, the left flow passage part, the right flow passage part and described
Export bushing pipe and form inner housing, the left pump cover, the pump housing and the right pump cover form shell body；The pump shaft is by unilateral axle
Support is held, the import bushing pipe is removably attachable to the pump housing top, and the outlet bushing pipe and the left flow passage part are removable
It is connected to the left pump cover with unloading, the right flow passage part and mechanical sealing parts are removably attachable to the right pump cover.
It is resistance to using cantilever radially split type double-shell structure, design according to the single-stage double-suction pump of the utility model embodiment
Corrosion-resistant inner housing is ground as liner, pressure casing body as protecting and supporting, enhances the wear-corrosion resistance of pump；Pump shaft
For non-penetrating design, unilateral low pressure shaft seal can be achieved, add the reliability of sealing, simplify sealing accessory system；Main portion
Part is removably attachable to the pump housing or pump cover, can remove the right side after termination of pumping in the case of motionless inlet pipeline and outlet conduit
All parts of side, easy to disassemble and maintenance pump main body and part.
In addition, according to the Double-casing single-stage double-suction pump of the utility model embodiment, there can also be technology additional as follows
Feature：
It is preferred that the space that the inner housing, the shell body and the mechanical sealing parts surround is mechanical seal chamber,
The mechanical seal intracavitary sets throat bushing, and the throat bushing is fixed on the mechanical sealing parts.
It is preferred that the impeller is the double-sided impeller for including front and rear auxiliary blade.
It is preferred that the wheel nose is fixed by impeller spacer, Hough pad, locking nut and check bolt.
It is preferred that the import bushing pipe and outlet bushing pipe set inlet short pipe and outlet stubs respectively along on the outside of the pump housing.
It is preferred that the left pump cover, the pump housing and right pump cover use carbon steel or stainless steel material；The import bushing pipe, outlet
Bushing pipe, impeller, axle sleeve and throat bushing use high-chromium wear-resistant material；The left flow passage part, right flow passage part use 12% chromium steel；Axle is adopted
With 42CrMo forging.
It is preferred that leakage fluid dram is set on the right pump cover.
It is preferred that the inner housing is divided into imbibition room, one-level according to the media flow order for entering the inner housing
Diversion chamber, hydraulic fluid room, two level diversion chamber.
It is preferred that the imbibition room vertically sets cowling panel.
It is preferred that the one-level diversion chamber and two level diversion chamber set one-level stator and two level stator respectively.
The utility model has the advantages that：
（1）The Double-casing single-stage double-suction pump remains single-stage double-suction pump high volume, high-lift, suction performance is good, axial force
The advantages that small；
（2）The Double-casing single-stage double-suction pump uses double-shell structure, enhances wear-corrosion resistance, while reduces system
Make and maintenance cost, it is high temperature, containing solid situation to be more suitable for fluid media (medium)；
（3）The Double-casing single-stage double-suction pump can realize unilateral low pressure shaft seal, add the reliability of sealing, simplify sealing
Accessory system；
（4）Main body and part easy to disassemble and maintenance pump, user use and grasped after the Double-casing single-stage double-suction pump termination of pumping
Facilitate；
（5）The Double-casing single-stage double-suction pump is be respectively provided with low cost the advantages of in each stage of manufacture, use and maintenance.
Additional aspect of the present utility model and other advantages will be set forth in part in the description or by this practicality newly
The practice of type is recognized.
Brief description of the drawings
Fig. 1 shows the structural representation of the exemplary Double-casing single-stage double-suction pump of exemplary embodiment of the present utility model.
Reference includes：
1：Inlet short pipe；2：Import bushing pipe；3：Left pump cover；4：Outlet stubs；5：Impeller spacer；6：Impeller nut；7：It is anti-
Loose bolt；8：Hough pad；9：Export bushing pipe；10：Left flow passage part；11：Key；12：Impeller；13：The pump housing；14：Right flow passage part；
15：Axle sleeve；16：Throat bushing；17：Right pump cover；18：Mechanical sealing parts；19：Pump shaft；20：Sprung parts.
Embodiment
The utility model further shows following examples so that the utility model is better described.It is it will similarly be understood that following
Embodiment is served only for that the utility model is further described, it is impossible to the limitation to scope of protection of the utility model is interpreted as,
Some nonessential modifications and adaptations that those skilled in the art makes according to the above of the present utility model belong to this
The protection domain of utility model.
In addition, following term may consider the function in the utility model and be defined, and can be according to user
Explained by different way with the intention of operator.Therefore, term defined herein should be based on the content quilt in entire disclosure
Explain.
Referring to Fig. 1, a kind of Double-casing single-stage double-suction pump, including the pump housing 13, pump shaft 19, impeller 12, left pump cover 3, right pump cover
17th, axle sleeve 15, left flow passage part 10, right flow passage part 14, import bushing pipe 2 and outlet bushing pipe 9；The inner chamber of the pump housing 13 is hollow, the He of axle sleeve 15
Impeller 12 is arranged on pump shaft 19 by key 11, and import bushing pipe 2, left flow passage part 10, right flow passage part 14 and outlet bushing pipe 9 form interior
Housing, left pump cover 3, the pump housing 13 and right pump cover 17 form shell body；Pump shaft is by unilateral bearings, and import bushing pipe 2 is removably
The top of the pump housing 13 is connected to, bushing pipe 9 is exported and left flow passage part 10 is removably attachable to left pump cover 3, right flow passage part 14 and machinery
Seal member 18 is removably attachable to right pump cover 17.The right outside of pump cover 17 sets the sprung parts 20 of connection pump shaft 19.Can be with
Understand, left pump cover 3, right pump cover 17, left flow passage part 10, right flow passage part 14 are the visual angles based on Fig. 1 on the name of left and right.
The small space that inner housing surrounds with shell body, mechanical sealing parts 18 is mechanical seal chamber, and mechanical seal intracavitary is set
Throat bushing 16 is equipped with, throat bushing 16 is fixed on mechanical sealing parts 18.Mechanical seal cavity pressure is inlet pressure, will be to whole
Pump belongs to low-pressure area for inside, it is possible to achieve unilateral low pressure shaft seal.The throttling formed by throat bushing 16 and axle sleeve 15, can be with
Greatly reduce medium and enter mechanical seal chamber, effectively the service life of drop increase mechanical seal.
Alternatively, impeller 12 is the double-sided impeller for including front and rear auxiliary blade.Impeller 12 is coupled using key 11, impeller 12
Front end limits the axial location of impeller 12 using impeller spacer 5, Hough pad 8 and impeller nut 6, separately sets check bolt 7, prevents
Pump reversion causes impeller nut 6 to loosen.
Specifically, the method for dismounting of the Double-casing single-stage double-suction pump：After from left side, left pump cover 3 is removed, it can remove successively
Left flow passage part 10, import bushing pipe 2., can be according to after removing right pump cover 17, sprung parts 20 and whole rotor part in the lump from right side
Secondary dismounting impeller 12, axle sleeve 15, right flow passage part 14, throat bushing 16, mechanical sealing parts 18, right pump cover 17 and sprung parts 20
On other parts.That is, the institute on right side can be removed after termination of pumping in the case of motionless inlet pipeline and outlet conduit
There are parts.Removing left side part needs to move outlet conduit, and removing import bushing pipe needs to move inlet pipeline, so in import
Inlet short pipe 1 and outlet stubs 4 can be set respectively between pipeline, outlet conduit and pump, so when needing movement pipeline
Time only needs first to remove inlet short pipe 1 and outlet stubs 4, it is possible to not movement pipeline body part.
Advantageously, left pump cover, the pump housing and right pump cover use carbon steel or stainless steel material；Import bushing pipe, outlet bushing pipe, leaf
Wheel, axle sleeve and throat bushing use high-chromium wear-resistant material；Left flow passage part, right flow passage part use 12% chromium steel；Axle is forged using 42CrMo
Part.
The runner feature of the Double-casing single-stage double-suction pump：Import bushing pipe 2 connects with external inlet pipeline, shell body and inner casing
The liquid collecting room's connection import bushing pipe 2 formed between body and the inner chamber of inner housing, the inner chamber of inner housing can by the sequence of flow of medium
Be divided into imbibition room, one-level diversion chamber, hydraulic fluid room, two level diversion chamber, outlet bushing pipe 9 connect inner housing two level diversion chamber and
Externally ported pipeline.Medium enters liquid collecting room by external inlet pipeline through import bushing pipe 2, and impeller 12 is by imbibition room by liquid collecting room
Medium suction, be then thrown to one-level diversion chamber, after the dredging of one-level diversion chamber stator, medium collects and pressed in pumping chamber
Enter two level diversion chamber, by dredging into inlet/outlet bushing pipe 9 for two level diversion chamber stator, finally flow into externally ported pipeline.Right pump
Leakage fluid dram is set on lid 17, liquid in runner can be drained.
One-level diversion chamber setting stator can effectively reduce liquid and directly impact reaction force caused by pumping chamber, increase rotor
Operation stability.Two level stator coordinates one-level stator that the medium after impeller 12 does work is oriented into pump discharge, while two level stator
Also act as the effect of support left side imbibition room.Preferably, one-level stator is radial vane.
All it is flow dead, therefore in addition to the space that import bushing pipe 2 is exported and inhaled near anolyte chamber inlet in liquid collecting room
The abrasion of shell body will not be caused.Further, imbibition room vertically sets cowling panel, makes the flowing shape on cowling panel both sides
Into certain symmetry, it can mitigate and be vibrated caused by turbulent flow.
All it is incorporated as referring in this application in all documents that the utility model refers to, just as each document quilt
It is individually recited as with reference to such.In addition, it is to be understood that after above-mentioned instruction content of the present utility model has been read, this area skill
Art personnel can make various changes or modifications to the utility model, and these equivalent form of values equally fall within the application appended claims
Book limited range.
Claims (10)
1. a kind of Double-casing single-stage double-suction pump, including the pump housing, pump shaft, axle sleeve, impeller, the pump housing inner chamber is hollow, the axle sleeve
It is arranged on the impeller by key on the pump shaft, it is characterised in that also including left pump cover, right pump cover, left flow passage part, right mistake
Flow part, import bushing pipe and outlet bushing pipe；The import bushing pipe, the left flow passage part, the right flow passage part and the outlet bushing pipe
Inner housing is formed, the left pump cover, the pump housing and the right pump cover form shell body；The pump shaft by unilateral bearings,
The import bushing pipe is removably attachable to the pump housing top, and the outlet bushing pipe and the left flow passage part are detachably connected
In the left pump cover, the right flow passage part and mechanical sealing parts are removably attachable to the right pump cover.
2. Double-casing single-stage double-suction pump according to claim 1, it is characterised in that the inner housing, the shell body and
The space that the mechanical sealing parts surround is mechanical seal chamber, and the mechanical seal intracavitary sets throat bushing, the throat bushing
It is fixed on the mechanical sealing parts.
3. Double-casing single-stage double-suction pump according to claim 1, it is characterised in that the impeller is comprising front and rear auxiliary lobe
The double-sided impeller of piece.
4. Double-casing single-stage double-suction pump according to claim 1, it is characterised in that the wheel nose passes through impeller pad
Piece, Hough pad, locking nut and check bolt are fixed.
5. Double-casing single-stage double-suction pump according to claim 1, it is characterised in that the import bushing pipe and outlet bushing pipe edge
Inlet short pipe and outlet stubs are set respectively on the outside of the pump housing.
6. Double-casing single-stage double-suction pump according to claim 1, it is characterised in that the left pump cover, the pump housing and right pump cover
Using carbon steel or stainless steel material；The import bushing pipe, outlet bushing pipe, impeller, axle sleeve and throat bushing use high-chromium wear-resistant material；
The left flow passage part, right flow passage part use 12% chromium steel；The pump shaft uses 42CrMo forging.
7. Double-casing single-stage double-suction pump according to claim 1, it is characterised in that leakage fluid dram is set on the right pump cover.
8. according to the Double-casing single-stage double-suction pump described in claim any one of 1-7, it is characterised in that the inner housing is according to entering
Enter the media flow order of the inner housing, be divided into imbibition room, one-level diversion chamber, hydraulic fluid room, two level diversion chamber.
9. Double-casing single-stage double-suction pump according to claim 8, it is characterised in that the imbibition room is vertically set
Cowling panel.
10. Double-casing single-stage double-suction pump according to claim 8, it is characterised in that the one-level diversion chamber and two level are led
Flow chamber sets one-level stator and two level stator respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720883003.3U CN207018254U (en) | 2017-07-21 | 2017-07-21 | A kind of Double-casing single-stage double-suction pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720883003.3U CN207018254U (en) | 2017-07-21 | 2017-07-21 | A kind of Double-casing single-stage double-suction pump |
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| Publication Number | Publication Date |
|---|---|
| CN207018254U true CN207018254U (en) | 2018-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720883003.3U Active CN207018254U (en) | 2017-07-21 | 2017-07-21 | A kind of Double-casing single-stage double-suction pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281868A (en) * | 2017-07-21 | 2019-01-29 | 上海福思特流体机械有限公司 | A double shell single stage double suction pump |
-
2017
- 2017-07-21 CN CN201720883003.3U patent/CN207018254U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281868A (en) * | 2017-07-21 | 2019-01-29 | 上海福思特流体机械有限公司 | A double shell single stage double suction pump |
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