CN205154646U - Balanced self -balancing multistage centrifugal pump and transition impeller of axial force secondary - Google Patents
Balanced self -balancing multistage centrifugal pump and transition impeller of axial force secondary Download PDFInfo
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- CN205154646U CN205154646U CN201520868666.9U CN201520868666U CN205154646U CN 205154646 U CN205154646 U CN 205154646U CN 201520868666 U CN201520868666 U CN 201520868666U CN 205154646 U CN205154646 U CN 205154646U
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- impeller
- transition
- centrifugal pump
- axial force
- self
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Abstract
The utility model provides a balanced self -balancing multistage centrifugal pump of axial force secondary. It has the balancing hole to open on the transition impeller, forms a pressure chamber after transition stator and the assembly of play water section, the one end of pressure chamber and the high pressure chest that the goes out the water section first clearance between through the centre cover and the pump body is linked together, the other end of the pressure chamber second clearance between through the impeller choma and the pump body is linked together with the pressure chamber of transition impeller. For solving the remaining axial equilibrium of forces problem of self -balancing multistage centrifugal pump, the utility model discloses carry out improved design to self -balancing multistage centrifugal pump local structure and part, made the transition impeller and go out that the cooperation forms a pressure chamber between the water section, regulated and control the purpose that the pressure of pressure chamber reaches the remaining axial force of balance through beat the balancing hole on the transition impeller. Through testing the remaining axial force that this structure can balance 90% -95%, the life -span and the reliability of operation of pump have consequently been improved.
Description
Technical field
The utility model relates to a kind of multistage centrifugal pump, particularly a kind of self-balanced multiple-stage centrifugal pump.
Background technique
Multistage centrifugal pump has the advantages such as energy-efficient, performance range is wide, security of operation is steady, low noise, long lifetime, installation and maintenance are convenient; By changing the material of pump, seal form and increase cooling system, hot water, oils, corrosivity and the medium etc. containing abrasive material can be carried.Multistage centrifugal pump in use can produce axial force, usually Balance disc or balancing drum mechanism is adopted to balance to the process of equilibrant, but because equilibrant cannot be eliminated completely, multistage centrifugal pump in use balanced controls always produces wearing and tearing, affects the normal use of multistage centrifugal pump.
Self-balanced multiple-stage centrifugal pump is a kind of novel structure, the multistage centrifugal pump carrying out balancing axial thrust by the reasonable Arrangement of impeller.Conventional self-balanced multiple-stage centrifugal pump eliminates the Balance disc of easily wearing and tearing, solves residual axial force by thrust-bearing.But often have thrust-bearing to generate heat in practical application, damage phenomenon, does not reach the life-span that design needs.
Open report about the axial force eliminating self-balanced multiple-stage centrifugal pump is more, and such as number of patent application is " axial force self-balancing multiple stage centrifugal pump " disclosed in the patent document of 200910061428.6; Number of patent application, in documents such as " a kind of axial force self-balancing multiple stage centrifugal pumps " disclosed in the patent document of 201210250813.7, have employed technological scheme that impeller is arranged symmetrically with to balance the axial force of multistage centrifugal pump.Number of patent application is " a kind of axial force self-balancing multiple stage centrifugal pump " disclosed in the patent document of 201410035689.1, the wall of the high pressure water pressure chamber of pump has high pressure water fairlead, gimbal has a damping hole be communicated with high pressure water fairlead, leave certain interval between Balance disc and gimbal, form a pressure chamber.These technological schemes relate to the structural modification to multistage centrifugal pump more, technological scheme relative complex.
Summary of the invention
The purpose of this utility model be to provide a kind of structural modification on multistage centrifugal pump little, effectively can reduce the self-balanced multiple-stage centrifugal pump of self-balanced multiple-stage centrifugal pump axial force on the axial force secondary balancing of the impact of thrust-bearing.The purpose of this utility model is also the transition impeller providing a kind of self-balanced multiple-stage centrifugal pump for axial force secondary balancing.
The transition impeller of the self-balanced multiple-stage centrifugal pump of axial force secondary balancing of the present utility model has equalizing orifice, a pressure chamber is formed after transition stator and water exit end assembling, one end of described pressure chamber is connected by the first gap between middle cover with the pump housing with the hyperbaric chamber of water exit end, and the other end of described pressure chamber is connected with the pressure chamber of transition impeller by the second gap between impeller port ring and the pump housing.
The self-balanced multiple-stage centrifugal pump of axial force secondary balancing of the present utility model can also comprise:
1, equalizing orifice is one.
2, described equalizing orifice is 2-6, and each equalizing orifice equidistantly distributes.
The transition impeller of the self-balanced multiple-stage centrifugal pump of axial force secondary balancing of the present utility model opens equalizing orifice on transition impeller, and described equalizing orifice is positioned at circumferentially being uniformly distributed of the back shroud back side choma of transition impeller.
The utility model is reached by simple structure and reduces self-balanced multiple-stage centrifugal pump axial force to the impact of thrust-bearing, extends the effect in the life-span of thrust-bearing, makes the operation of pump more reliable.The utility model just improves the partial structurtes of multistage centrifugal pump shaft, and the overall structure of pump does not have large change, and the number of spare parts of change is few, and cost is low.The utility model achieves the secondary balancing that axial force is answered, and makes bearing reach the life-span of design needs.
For solving the equilibrium problem of self-balanced multiple-stage centrifugal pump residual axial force, the utility model has carried out Curve guide impeller to self-balanced multiple-stage centrifugal pump partial structurtes and part, make to coordinate formation pressure chamber between transition impeller and water exit end, the pressure regulating and controlling pressure chamber by beating equalizing orifice on transition impeller reaches the object of balanced residue axial force.The residual axial force of 90%-95% can be balanced by testing this structure, therefore improve life-span and the reliability of operation of pump.
Accompanying drawing explanation
Fig. 1 is the structural representation of multistage centrifugal pump.
Fig. 2 and Fig. 3 is the partial enlarged drawing of Fig. 1.
Fig. 4 is the structural representation of transition impeller of the present utility model.
Embodiment
Below in conjunction with accompanying drawing citing, the utility model is described in more detail.
One of core of the present utility model improves the structure of transition impeller.Composition graphs 4, transition impeller of the present utility model has equalizing orifice 11, and described equalizing orifice is positioned at the root of transition impeller, and the suction eye 12 of equalizing orifice and transition impeller connects.The quantity of equalizing orifice is 1-6, and when the quantity of equalizing orifice is more than one, each equalizing orifice equidistantly distributes.The shape of equalizing orifice is generally circle, and this some holes is distributed in the back side choma of transition back shroud of impeller.
Shown in Fig. 1 is multistage centrifugal pump structure.The utility model improves the structure of transition impeller in multistage centrifugal pump and the assembly relation of section components thereof.The overall structure of multistage centrifugal pump does not do large change.Composition graphs 2 and Fig. 3, transition impeller 1 is opened equalizing orifice 11, transition stator 2 and water exit end 3 assemble rear formation pressure chamber 4, one end of described pressure chamber is connected by the first gap 5 between middle cover with the pump housing with the hyperbaric chamber 7 of water exit end, and the other end of described pressure chamber is connected with the pressure chamber 8 of transition impeller by the second gap 6 between impeller port ring and the pump housing.
By transition impeller, cross stator and water exit end form a pressure chamber after assembling, the one end in this chamber is connected by the gap between middle cover with the pump housing with the hyperbaric chamber of water exit end, and the other end is connected with the pressure chamber of pump housing gap with transition impeller by impeller port ring.The direction of direction as shown in F1 in Fig. 3 of the axial force that pressure chamber produces.Self-balanced multiple-stage centrifugal pump is the direction of direction as shown in F2 in Fig. 1 of its axial force of process calculating during even number, when self-balancing multi-stage pump is odd number, by designing the direction of direction as shown in F2 in Fig. 1 of its residual axial force.On transition impeller, equalizing orifice is opened according to above situation, pressure chamber 4 is communicated with the suction port of transition impeller, because the pressure in pressure chamber is much larger than the pressure of suction eye, so the pressure size of pressure chamber 4 can be regulated by the size opening equalizing orifice, thus reach the object of balanced residue axial force.
Claims (7)
1. the self-balanced multiple-stage centrifugal pump of an axial force secondary balancing, it is characterized in that: transition impeller has equalizing orifice, a pressure chamber is formed after transition stator and water exit end assembling, one end of described pressure chamber is connected by the first gap between middle cover with the pump housing with the hyperbaric chamber of water exit end, and the other end of described pressure chamber is connected with the pressure chamber of transition impeller by the second gap between impeller port ring and the pump housing.
2. the self-balanced multiple-stage centrifugal pump of axial force secondary balancing according to claim 1, is characterized in that: equalizing orifice is one.
3. the self-balanced multiple-stage centrifugal pump of axial force secondary balancing according to claim 1, is characterized in that: described equalizing orifice is 2-6, and each equalizing orifice equidistantly distributes.
4., according to the self-balanced multiple-stage centrifugal pump of the axial force secondary balancing of claims 1 to 3 described in any one, it is characterized in that: described equalizing orifice is positioned at the back side choma of transition back shroud of impeller.
5. a transition impeller for the self-balanced multiple-stage centrifugal pump of axial force secondary balancing, is characterized in that: on transition impeller, open equalizing orifice, described equalizing orifice is positioned at the back side choma of transition back shroud of impeller.
6. the transition impeller of the self-balanced multiple-stage centrifugal pump of axial force secondary balancing according to claim 5, is characterized in that: described equalizing orifice is one.
7. the transition impeller of the self-balanced multiple-stage centrifugal pump of axial force secondary balancing according to claim 5, is characterized in that: described equalizing orifice is 2-6, and each equalizing orifice equidistantly distributes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520868666.9U CN205154646U (en) | 2015-11-04 | 2015-11-04 | Balanced self -balancing multistage centrifugal pump and transition impeller of axial force secondary |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520868666.9U CN205154646U (en) | 2015-11-04 | 2015-11-04 | Balanced self -balancing multistage centrifugal pump and transition impeller of axial force secondary |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205154646U true CN205154646U (en) | 2016-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520868666.9U Expired - Fee Related CN205154646U (en) | 2015-11-04 | 2015-11-04 | Balanced self -balancing multistage centrifugal pump and transition impeller of axial force secondary |
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| CN (1) | CN205154646U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762676A (en) * | 2016-12-29 | 2017-05-31 | 西安航天泵业有限公司 | A kind of centrifugal multistage pump multiple centrifugal pump delivery chamber |
| CN112524044A (en) * | 2020-11-27 | 2021-03-19 | 昆山市农业机械化技术推广站 | Centrifugal device with controllable output |
-
2015
- 2015-11-04 CN CN201520868666.9U patent/CN205154646U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762676A (en) * | 2016-12-29 | 2017-05-31 | 西安航天泵业有限公司 | A kind of centrifugal multistage pump multiple centrifugal pump delivery chamber |
| CN106762676B (en) * | 2016-12-29 | 2019-08-13 | 西安航天泵业有限公司 | A kind of centrifugal multistage pump multiple centrifugal pump delivery chamber |
| CN112524044A (en) * | 2020-11-27 | 2021-03-19 | 昆山市农业机械化技术推广站 | Centrifugal device with controllable output |
| CN112524044B (en) * | 2020-11-27 | 2023-10-31 | 昆山市农业机械化技术推广站 | Centrifugal device with controllable output |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20181104 |