CN202326453U - Self-tightening device used for axial positioning of pump core of centrifugal pump - Google Patents
Self-tightening device used for axial positioning of pump core of centrifugal pump Download PDFInfo
- Publication number
- CN202326453U CN202326453U CN201120467345XU CN201120467345U CN202326453U CN 202326453 U CN202326453 U CN 202326453U CN 201120467345X U CN201120467345X U CN 201120467345XU CN 201120467345 U CN201120467345 U CN 201120467345U CN 202326453 U CN202326453 U CN 202326453U
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- self
- pump
- tightening ring
- centrifugal pump
- tightening
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Abstract
The utility model discloses a self-tightening device used for the axial positioning of a pump core of a centrifugal pump. The self-tightening device comprises upper screws (3), wherein a self-tightening ring (2) is arranged in an annular processing groove in an outer cylinder (1) of the centrifugal pump, a self-tightening ring fixing block (4) is arranged on the outer cylinder (1) by the upper screws (3) and is connected with the self-tightening ring (2) so as to position the self-tightening ring in the radial direction, a positioning sleeve (6) is installed between the self-tightening ring fixing block (4) and a pump cover (7) of the centrifugal pump, and the self-tightening ring fixing block (4) and the positioning sleeve (6) are installed on the pump cover (7) by lower screws so as to position the self-tightening ring axially. The self-tightening device is convenient to use and manage, and rapid in operation, maintenance and disassembly, so that the centrifugal pump has a simple structure, the size of the centrifugal pump is reduced, the weight of the centrifugal pump is lightened, and the manufacturing and using maintenance cost of the centrifugal pump is lowered.
Description
Technical field
The present invention relates to a kind of self-tightening device that is applied to multistage centrifugal pump (bivalve body) pump mandrel to the location.Its special high pressure bivalve body multistage centrifugal pump that uses in the non high temperature occasion that adapts to for example is used for high crush-cutting Jiao, pipeline oil transportation, hydrogenation charging, land and marine water filling or hydrocarbon medium collection perhaps its similar non high temperature occasion such as defeated.
Background technique
What this pump series products related to is a kind of self-tightening device that is used for body multistage centrifugal pump interior pump mandrel in high pressure bivalve to the location.
At present; The traditional approach of the axially locating of the horizontal bivalve body multistage centrifugal pump pump core of domestic use; Like Fig. 4, shown in Figure 5, be so-called bolt of cover structure, promptly the pump casing cylindrical shell with have collection adorn integrally-built in the axially locating of pump core be to rely on the tension of big bolt of cover 24 to carry out.The high pressure static seal key position of this bivalve body multistage centrifugal pump is at the contact plane (M plane) of casing cylinder 21 with pump cover 23, seals with high-pressure metal wound gasket 22 here.In order to guarantee the reliability of static seal, a plurality of big bolts of cover that on pump cover, gathered are strained, thereby make the casing cylinder of centrifugal pump and the diameter of pump cover do very greatly, and make structure complicated, have improved the manufacture cost of pump.
Along with like product develops to maximization and high pressure pump, make that the impacting force of big bolt of cover is increasing, the size of big bolt of cover is increasing, tightens not only difficulty with manual spanner, or even unworkable.In order to make each big bolt of cover afford enough, suitable, uniform tightening forces, in order to reduce labor intensity, essential special tool(s), for example hydraulic pressure installation, electric torque spanner, the Electric heating appliance etc. of adopting when this bolt of mounting or dismounting.In order to ensure the reliability of high pressure end cap sealability, user's use for ease need be worn special-purpose extracting tool at random during the pump product export, and maintenance and complex managementization that this makes pump improve maintenance cost.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, and provide a kind of operation, dismounting and maintenance efficient and convenient, make centrifugal pump weight lighter be used for centrifugal pump pump mandrel to the location the self-tightening device.
The technological scheme that the present invention is adopted for its technical problem of solution is: a kind of self-tightening device that is used for centrifugal pump pump mandrel to the location; Comprise screwing; In the annular processing groove in the outer cylinder body of this centrifugal pump the self-tightening ring is housed; Through screwing self-tightening ring fixed block is housed on the said outer cylinder body, and self-tightening ring fixed block and self-tightening ring join, the self-tightening ring is carried out radial location; Between the pump cover of said self-tightening ring fixed block and this centrifugal pump, setting sleeve is housed, this self-tightening ring fixed block and setting sleeve are contained on the said pump cover through following screw, and the self-tightening ring is carried out axially locating.
After adopting the present invention, the effect of self-tightening ring is to bear by what pump discharge pressure formed to act on the thrust load on the pump cover, to the realization of the pump core components in centrifugal pump axially locating.Because the axial force that the self-tightening rim bearing receives can be located automatically; Screwing is not a high pressure master pressure part with following screw; And just playing the standard fasteners that connects with positioning action, the use general tool can be operated, dismantle, so need not dispose special extracting tool during assembly and disassembly.Thereby need not do the outer cylinder body of centrifugal pump and the diameter of pump cover very big; Just make comparatively speaking that this centrifugal pump structure is simple, size decreases, weight saving; Pump cover weight ratio conventional construction hangs down about 35% (weight of former bolt pump cover is 1250kg), has reduced the manufacture cost of pump.
Use and management of the present invention is conveniently operated, keeps in repair, is dismantled fast, thereby has reduced the working service cost of centrifugal pump.The present invention has been able to use on high pressure coke cutting water pump, and its important technological parameters is: pump discharge pressure is 28MPa; The pump rated flow is 255m
3/ h; Self-tightening ring diameter D is φ 560, and self-tightening ring thickness T is 45, and self-tightening ring material is 3Cr13.
Description of drawings
Below in conjunction with accompanying drawing and mode of execution the present invention is done further detailed description.
Fig. 1 is used for the structural representation of centrifugal pump pump mandrel to the self-tightening device of location for the present invention.
Fig. 2 is the A-A sectional view of Fig. 1.
The vertical section structure figure that Fig. 3 assembles for the present invention and outer cylinder body, pump cover, pump core etc.
Fig. 4 is the bolt of cover structural representation of known centrifugal pump pump mandrel to the location.
Fig. 5 is the B-B sectional view of Fig. 4.
Embodiment
Like Fig. 1, shown in Figure 2; The present invention is used for the tightening method of centrifugal pump pump mandrel to the location: earlier a self-tightening ring 2 is bumped into tightly in the annular processing groove in the outer cylinder body 1 of this centrifugal pump; Use screwing 3 (two) that self-tightening ring fixed block 4 (fan-shaped) is installed on this outer cylinder body 1 again; And self-tightening ring fixed block 4 joins with self-tightening ring 2, and the self-tightening ring is carried out radial location; And then, the self-tightening ring is carried out axially locating with playing screw 5 (three) to pass self-tightening ring fixed block 4 (fan-shaped) and setting sleeve 6 successively and being installed on the pump cover 7 of this centrifugal pump; Setting sleeve 6 (corresponding matching each other) of (use screwing, following screw) same installation is organized more on said outer cylinder body, pump cover respectively successively more at last self-tightening rings 2, self-tightening ring fixed block 4 and correspondence, thereby the axially locating of realization centrifugal pump pump core.
Wherein, the profile of said self-tightening ring fixed block 4 is fan-shaped, is designed to fan-shaped effect and is when guaranteeing that the compact mounting point of screwing and following screw is provided, for other mechanism's element is installed on the pump cover the big space of trying one's best to be provided; Said setting sleeve 6 is between pump cover 7 and the self-tightening ring fixed block 4, plays the self-tightening ring is carried out the axially locating effect; Said self-tightening ring 2, self-tightening ring fixed block 4 and corresponding setting sleeve 6 are installed on said outer cylinder body, the pump cover and are four groups altogether, and its at interval 90 ° each other, to reach superior axially locating effect.
Adopt U.S. ASME VIII chapter 1 " pressure vessel code ", self-tightening ring, outer cylinder body and pump cover are carried out preliminary intensity calculate and stress analysis; Other dependency structure characteristics in conjunction with this case study are optimized design; According to axial pressure of bearing on the pump cover and active area, sheared the area at diameter place according to acting on the self-tightening ring, according to the mechanical property of material, calculate the thickness of self-tightening ring; And calculate the further feature size of self-tightening ring, the annular groove size of outer cylinder body and the thickness size of pump cover etc. thus.
With reference to Fig. 1, shown in Figure 2; The present invention is used for the self-tightening device of centrifugal pump pump mandrel to the location; Comprise screwing 3, in the annular processing groove in the outer cylinder body 1 of this centrifugal pump self-tightening ring 2 is housed, through screwing 3 self-tightening ring fixed block 4 (fan-shaped) is housed on the said outer cylinder body 1; And self-tightening ring fixed block 4 joins with self-tightening ring 2, and the self-tightening ring is carried out radial location; Between the pump cover 7 of said self-tightening ring fixed block 4 and this centrifugal pump, setting sleeve 6 is housed, this self-tightening ring fixed block 4 is contained on the said pump cover 7 through following screw with setting sleeve 6, and the self-tightening ring is carried out axially locating.
Said screwing 3 is to play the standard fasteners that is connected with positioning action with following screw 5, and its loading and unloading just need not special dismantling device.As shown in Figure 2, metal wound gasket 8 and " O type " seal ring 9 are housed, to seal the outlet pressure P of this centrifugal pump on the socket face of the endoporus of said outer cylinder body 1 and pump cover 7.On 360 ° of circumference of outer cylinder body 1 high voltage terminal end face N, be uniformly distributed with four fan-shaped self-tightening ring fixed blocks are installed, and carry out axially locating with outer cylinder body 1 and pump cover 7 respectively with screwing 3 and following screw 5.
The intensity of outer cylinder body 1, pump cover 7 and self-tightening ring 2 is calculated with reference to U.S. ASME design of pressure vessels standard.Thrust load F calculates with the shearing stress that acts on the self-tightening ring diameter φ D thickness T of self-tightening ring on the pump cover by acting on.By the thickness T of the self-tightening ring that calculates, can extrapolate the size of corresponding annular processing groove on other size and the outer cylinder body of self-tightening ring.
As shown in Figure 3, the pump core of this centrifugal pump is made up of component such as rotor part 11, fore bearing parts 12, machine for the assembly of unit load tool sealed member 13, suction letter body 14, stage casing 15, stator 16 and rear bearing parts 19.At first, then its part is inserted in the outer cylinder body 1, and covers with pump cover 7 with this pump core assembled.Again said self-tightening device is installed on outer cylinder body 1 and the pump cover 7 according to above-mentioned tightening method, to realize the axially locating of centrifugal pump pump core.
Claims (2)
1. one kind is used for centrifugal pump pump mandrel to the self-tightening device of locating; Comprise screwing (3); It is characterized in that: in the annular processing groove in the outer cylinder body (1) of this centrifugal pump self-tightening ring (2) is housed; Said outer cylinder body (1) is gone up and through screwing (3) self-tightening ring fixed block (4) to be housed, and self-tightening ring fixed block (4) and self-tightening ring (2) join, and the self-tightening ring is carried out radial location; Between the pump cover (7) of said self-tightening ring fixed block (4) and this centrifugal pump, setting sleeve (6) is housed, this self-tightening ring fixed block (4) is contained on the said pump cover (7) through following screw with setting sleeve (6), and the self-tightening ring is carried out axially locating.
2. the self-tightening device that is used for centrifugal pump pump mandrel to the location as claimed in claim 1 is characterized in that: on the socket face of the endoporus of said outer cylinder body (1) and pump cover (7), metal wound gasket (8) and " O type " seal ring (9) are housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120467345XU CN202326453U (en) | 2011-11-18 | 2011-11-18 | Self-tightening device used for axial positioning of pump core of centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120467345XU CN202326453U (en) | 2011-11-18 | 2011-11-18 | Self-tightening device used for axial positioning of pump core of centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202326453U true CN202326453U (en) | 2012-07-11 |
Family
ID=46438434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120467345XU Withdrawn - After Issue CN202326453U (en) | 2011-11-18 | 2011-11-18 | Self-tightening device used for axial positioning of pump core of centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202326453U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434497A (en) * | 2011-11-18 | 2012-05-02 | 浙江科尔泵业股份有限公司 | Self-tightening method and self-tightening device for axial location of pump core of centrifugal pump |
-
2011
- 2011-11-18 CN CN201120467345XU patent/CN202326453U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434497A (en) * | 2011-11-18 | 2012-05-02 | 浙江科尔泵业股份有限公司 | Self-tightening method and self-tightening device for axial location of pump core of centrifugal pump |
| CN102434497B (en) * | 2011-11-18 | 2013-09-04 | 浙江科尔泵业股份有限公司 | Self-tightening method and self-tightening device for axial location of pump core of centrifugal pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120711 Effective date of abandoning: 20130904 |
|
| RGAV | Abandon patent right to avoid regrant |