CN1110764A - Multi-stage pump axial force balance device - Google Patents
Multi-stage pump axial force balance device Download PDFInfo
- Publication number
- CN1110764A CN1110764A CN 94118015 CN94118015A CN1110764A CN 1110764 A CN1110764 A CN 1110764A CN 94118015 CN94118015 CN 94118015 CN 94118015 A CN94118015 A CN 94118015A CN 1110764 A CN1110764 A CN 1110764A
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- Prior art keywords
- bearing
- friction bearing
- axial force
- shaft
- frame
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- Structures Of Non-Positive Displacement Pumps (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The axial force balance device for multi-stage pump, especially for high-head deep-well submerged pump features that the number of antiwear bearing stages may vary with balanced axial force to ensure uniform load to each stage. On shaft with splines at both ends there are multi-stage thrust disks, antiwear bearings and bearing seats fixed to casing. The casing has top and bottom guide bearing seats and connecting stand. Axle sealings are installed to shaft. Liquid is sealed in inner cavity of casing.
Description
The invention belongs to multi-stage pump axial force balance device, especially for the multi-stage pump axial force balance device of high Yang Cheng deep well submerged pump.
At present, the general submersible pump of Shi Yonging, the size of its axial force directly has influence on the life-span of existing various pumps, the balance of axial force problem of particularly high Yang Cheng pump is the insoluble key issue of designer and manufacturer always, traditional axial thrust balancing devices can roughly be divided into two classes: a class is with method balancing axial thrusts such as Balance disc, balancing drum, equalizing orifices, it is big that this class Equilibrator exists leakage rate, pump efficiency is low, the size of sand content directly influences the shortcomings such as working life of pump in the fed sheet of a media, and using scope is subjected to certain restriction.Another kind of Equilibrator as shown in Figure 1 and Figure 2, it is low that multistage thrust bearing shown in Figure 1 exists bearing capacity, and therefore shortcomings such as processing technology complexity, can not satisfy the axial force balance of high Yang Cheng pump, and can only be applied to the axial force balance of low Yang Cheng.Multistage thrust bearing shown in Figure 2, mainly exist the processing technology complexity, the assembling difficulty, manufacturability is poor, be difficult to guaranteeing the evenly carrying simultaneously of every pair of thrust bearing, is the example explanation with the final stage thrust bearing of Fig. 2: size h can be passed through with respect to the installation dimension A of benchmark M face in final stage thrust disc lower end surface (being break-in face N)
1, h
2Calculating is known: A=h
1+ h
2+ h
1+ h
2+ h
1=3h
1+ 2h
2; The installation dimension B of final stage anti-friction bearing upper-end surface (being break-in face N) relative datum M can pass through size H
1, H
2, H
3, H
4, H
5, H
6, H
7, H
8, H
9, H
10Calculating is known:
B＝H
5-（H
4+H
3+H
2+H
1）+H
6+H
7-H
8-（H
10-H
9）
＝H
5-H
4-H
3-H
2-H
1+H
6+H
7-H
8-H
10+H
9
Hence one can see that, because machining error, each part actual size all has error with nominal size, therefore, inequality with break-in face integrating error with respect to benchmark in assembly process that the one-level thrust bearing is paid, following three kinds of situations may occur: during (1) A=B, this grade bearing is worked good; (2) during A＞B, negative clearance occurs between this grade bearing, cause other bearing to separate; (3) during A＜B, occur positive gap between this grade bearing, can not contact; Thrust bearing progression is many more, error is big more, assemble multistage thrust bearing by this structure, actual have only one-level or what thrust bearing to carry, such axial thrust balancing devices in use, because one-level or what are carried whole loads, can cause the overload phenomenon like this, cause inefficacy thereby damage bearing.The Chinese patent patent No. is: 91103265 differential pressure piston type balance unit of axial forces for multistage pump, its structure has promptly adopted the structure of similar Fig. 2, so effect is relatively poor.
The objective of the invention is at the deficiencies in the prior art, provide that a kind of preparation process is simple, bearing capacity is high, the life-span is long, good airproof performance, anti-silt particle, the multi-stage pump axial force balance device that applicability is wide.
Purpose of the present invention can reach by following measure:
A kind of multi-stage pump axial force balance device that includes the pump housing and motor, this device is contained between the pump housing and the motor, the axle of the wounded in the battle key in two ends is housed in the frame, thrust disc more than the secondary is housed in shaft shoulder bottom, it below the thrust disc anti-friction bearing that closely contacts with it, anti-friction bearing is fixed on the anti-friction bearing seat that has through hole, anti-friction bearing, spacer sleeve and bearing are housed between anti-friction bearing seat and the splined shaft, the anti-friction bearing seat is fixed on the frame by locating stud, first order anti-friction bearing seat also can adopt the seam location, be fixed on the frame, anti-friction bearing can all be a taper thrustbearing, also can be all to be flat thrust bearing, also can be both combination in any, can also adopt watt thrust bearing that can incline, the frame inner chamber is an enclosed cavity filling with clear water, and water injection hole seals with screw.Thrust disc also is equipped with on shaft shoulder top, anti-friction bearing is housed above the thrust disc, leave the gap of 0.3-0.7mm between them, can prevent to scurry on moment of pump housing axle, anti-friction bearing is fixed on the guide shaft bearing of band water injection hole, between guide shaft bearing and axle bearing is housed, axle envelope and shaft seal cover, sand-throwing ring and spline housing are equipped with in the shaft seal cover upper end, connect support, guide shaft bearing and frame and are fixed together; Spline housing also is equipped with in the splined shaft lower end, connects support and frame and is fixed together.
Description of drawings:
Fig. 1,2 is the Equilibrator schematic representation of prior art;
Fig. 3 is the multi-stage pump axial force balance device schematic representation;
Be described in further detail by embodiment below in conjunction with accompanying drawing;
Multi-stage pump axial force balance device is connected between the motor 29 and the pump housing, the axle 25 of the wounded in the battle key in two ends is housed in the frame 32,4 groups of thrust discs and 4 groups of anti-friction bearings are housed in shaft shoulder bottom, topmost one group adopts taper thrust disc 16, be installed on the axle 25 by key 20, it below it the taper anti-friction bearing 18 that closely contacts with it, taper anti-friction bearing 18 is fixed on the anti-friction bearing seat 19 that has through hole by sunk screw 17, anti-friction bearing seat 19 is fixed on the frame 32 by locating stud 23, taper anti-friction bearing 18, between anti-friction bearing seat 19 and the axle 25 spacer sleeve 31 is housed, second group the same with the 3rd group of structure, be that thrust disc 21 is installed on the axle 25 by key 20, anti-friction bearing 22 is housed in its lower section, anti-friction bearing 22 is fixed on the anti-friction bearing seat 19 that has through hole by sunk screw 17, anti-friction bearing seat 19 is fixed on the frame 32 by locating stud 23, anti-friction bearing 22, between anti-friction bearing seat 19 and the axle 25 spacer sleeve 31 is housed, promptly the 4th group structure is bottom: taper thrust disc 16 is installed on the axle 25 by key 20, be taper anti-friction bearing 18 in its lower section, anti-friction bearing 18 is fixed on the anti-friction bearing seat 19 by sunk screw 17, anti-friction bearing seat 19 is fixed on the frame 32 by locating stud 23, between anti-friction bearing seat 19 and the axle 25 bearing 24 is housed.Be installed in by key 20 on the axle 25 at shaft shoulder top thrust disc 15, in thrust disc 15 upper ends anti-friction bearing 14 is housed, when assembling, make the gap of leaving 0.3-0.7 between thrust disc 15 and the anti-friction bearing 14, anti-friction bearing 14 is fixed on the guide shaft bearing 11 of band water injection hole by sunk screw 13, between guide shaft bearing 11 and axle 25, bearing 12 is housed, axle envelope 10 and shaft seal cover 5, shaft seal cover 5 is fixed on the guide shaft bearing 11 by sunk screw, in shaft seal cover 5 upper ends sand-throwing ring 1 and spline housing 4 are installed, by fastening screw trip bolt 2 pump shaft 3 is housed also in the spline housing 4, connect support 7, guide shaft bearing 11 and frame 32 are fixed together by bolt 9, connect on the support water injection hole is housed, water injection hole is by 8 sealings of water filling bolt.Spline housing 28 also is equipped with in axle 25 lower ends, by spline housing 28 motor shaft is connected with axle 25, and is gapped between the diaxon, connects to fix being connected by bolt 27 and 30 of support 26 and frame 32 and motor 29.
The present invention compared with prior art has the following advantages:
1, simple in structure, reliable, make easily.
2, the anti-friction bearing element is installed in the shell body inner chamber of sealing, and intracavity liquid and external agency be mixed flow not, makes that anti-friction bearing element duty is good, the life-span is long.
3, the big or small changeable anti-friction bearing progression according to balancing axial thrust satisfies, and how much progression can both guarantee every grade of evenly carrying, wide adaptability.
Claims (4)
1, a kind of multi-stage pump axial force balance device that includes the pump housing and motor, it is characterized in that being equipped with in the frame axle of the wounded in the battle key in two ends, thrust disc more than the secondary is housed in shaft shoulder bottom, below the thrust disc be and its anti-friction bearing that closely contacts, anti-friction bearing is fixed on the anti-friction bearing seat that has through hole, between anti-friction bearing, anti-friction bearing seat and the splined shaft spacer sleeve and bearing are housed, the anti-friction bearing seat is fixed on the frame by locating stud, first order anti-friction bearing seat also can adopt the seam location, is fixed on the frame; Thrust disc also is equipped with on shaft shoulder top, anti-friction bearing is housed above the thrust disc, anti-friction bearing is fixed on the guide shaft bearing of band water injection hole, bearing, axle envelope and shaft seal cover are housed between guide shaft bearing and axle, sand-throwing ring and spline housing are equipped with in the shaft seal cover upper end, connect support, guide shaft bearing and frame and are fixed together; Spline housing also is equipped with in the splined shaft lower end, connects support and frame and is fixed together.
2, multi-stage pump axial force balance device according to claim 1 is characterized in that the frame inner chamber is an enclosed cavity filling with clear water, and water injection hole seals with screw.
3, multi-stage pump axial force balance device according to claim 1, it is characterized in that described anti-friction bearing can all be a taper thrustbearing, also can be all to be flat thrust bearing, also can be both combination in any, also can adopt watt thrust bearing that can incline.
4, multi-stage pump axial force balance device according to claim 1 is characterized in that leaving between the thrust disc on shaft shoulder top and the anti-friction bearing gap of 0.3～0.7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94118015 CN1110764A (en) | 1994-11-19 | 1994-11-19 | Multi-stage pump axial force balance device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94118015 CN1110764A (en) | 1994-11-19 | 1994-11-19 | Multi-stage pump axial force balance device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1110764A true CN1110764A (en) | 1995-10-25 |
Family
ID=5038629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94118015 Pending CN1110764A (en) | 1994-11-19 | 1994-11-19 | Multi-stage pump axial force balance device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1110764A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103477016A (en) * | 2010-10-11 | 2013-12-25 | 贝克休斯公司 | Bearing systems containing diamond enhanced materials and downhole applications for same |
| US9290997B2 (en) | 2010-10-01 | 2016-03-22 | Baker Hughes Incorporated | Downhole tools including bearings and methods of forming same |
-
1994
- 1994-11-19 CN CN 94118015 patent/CN1110764A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9290997B2 (en) | 2010-10-01 | 2016-03-22 | Baker Hughes Incorporated | Downhole tools including bearings and methods of forming same |
| CN103477016A (en) * | 2010-10-11 | 2013-12-25 | 贝克休斯公司 | Bearing systems containing diamond enhanced materials and downhole applications for same |
| CN103477016B (en) * | 2010-10-11 | 2016-04-27 | 贝克休斯公司 | For the motor sub-assembly of holing to subterranean strata and submersible pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |