CN201090516Y - Middle opening single suction multilevel diffuser centrifugal pump - Google Patents
Middle opening single suction multilevel diffuser centrifugal pump Download PDFInfo
- Publication number
- CN201090516Y CN201090516Y CNU2007200638747U CN200720063874U CN201090516Y CN 201090516 Y CN201090516 Y CN 201090516Y CN U2007200638747 U CNU2007200638747 U CN U2007200638747U CN 200720063874 U CN200720063874 U CN 200720063874U CN 201090516 Y CN201090516 Y CN 201090516Y
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- pump
- stator
- pump housing
- single suction
- chamber
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Abstract
The utility model discloses a central-split single-suction multistage guide-vane type centrifugal pump. The pump shell is of central-split type and is divided into two parts of a pump body (1) and a pump cover (2) which are horizontally cut along the axial lead. Impellers are evenly, symmetrically and reversely arranged in the axial direction; corresponding guide vanes are also reversely arranged. The pump is provided with a backward-forward flow channel (26), a water inlet (28) and a water outlet (29); wherein both the water inlet (28) and the water outlet (29) are arranged on the pump body (1); the backward-forward channel (26) is arranged in the pump body (1). A discharge chamber (27) of the pump shell has a scroll casing structure. The utility model has the advantages of simple structure, good sealing property, stable operation and high reliability.
Description
Technical field
The utility model relates to a kind of centrifugal pump, particularly relates to driving the multistage stator formula of single suction centrifugal pump in a kind of.
Background technique
Existing three and above impeller multistage centrifugal pump have two types: first kind is single suction multistage segmental formula stator formula multistage pump, this type pump impeller adds stator by a plurality of independent sections and forms, be connected with the liquid in-out section by pull bar, axial force is by the balanced controls balance, pump axially string quantity of motion must be arranged.The shortcoming of this type pump is: each sections all is potential leakage points, when pumping high temperature media, because uneven can the generation of thermal expansion leaked, balanced controls are in case stop up or damage, rotor part will wear and tear and be stuck, serious meeting friction-produced high temperature, high pressure, and expanding behind the vaporizing liquid produces blast.Pump component is many, axially and the radial dimension integrating error big, process and the loading and unloading amount big, need remove the liquid in-out pipeline during maintenance.Second kind is the multistage voluted type middle-opening pump of single suction, the forward and reverse layout of this type pump impeller, and the pump housing, pump cover are along leaving subdivision in the shaft axis, and forward and reverse runner is connected by outer tube, and the shortcoming of this type pump is: the face of opening in the subdivision is long, excessive, realizes that sealing is very difficult; Rotor part is oversize, the poor stability of pump operation, and vibration, noise is big; Forward and reverse adapter is an externally connected pipe, has increased leakage point; Runner is too complicated, casting cost height, and processing difficulties, process equipment requires high, and processing cost height, pump are too heavy, the cost of material height.
The model utility content
Technical problem to be solved in the utility model provides a kind of simple in structure, and good seal performance operates steadily, reliability high in drive the multistage stator formula of single suction centrifugal pump.
In order to solve the problems of the technologies described above, the utility model provide in drive the multistage stator formula of single suction centrifugal pump, pump case is a middle open type, divide the pump housing, pump cover two-part, the pump housing, pump cover are along the shaft axis horizonally split, and the average vertically inversion symmetry of impeller arranges that corresponding stator is reversed arrangement also, be provided with forward and reverse runner and liquid entering hole, liquid outlet, described forward and reverse runner, liquid entering hole, liquid outlet all are arranged on the described pump housing.
Described forward and reverse runner is arranged in the described pump housing.
Blade wheel chamber is screwed by stator, diffuser and the dividing plate of activity, every grade of blade wheel chamber's pin anti-rotation, pin on the pump housing prevents that the whole blade wheel chamber of going here and there from rotating, and the pump housing seal ring on diffuser and the stator prevents that prime pump chamber liquid from leaking and fixed guide vane body and stator to subordinate's pump chamber.
The chamber of spuing of described pump case is a turbocharger housing structure.
Drive the multistage stator formula of single suction centrifugal pump in the employing technique scheme, pump case is a middle open type, divide the pump housing, pump cover two-part, the pump housing, pump cover are along the shaft axis horizonally split, liquid entering hole, liquid outlet all are positioned on the pump housing, the runner of pump own is an inner flow passage, has significantly reduced potential leakage point, and maintenance the time does not need to dismantle pipeline.Blade wheel chamber is made up of stator, diffuser, dividing plate and the pump housing and the pump cover of activity.Diffuser and dividing plate are screwed, every grade of blade wheel chamber's pin anti-rotation, and whole string blade wheel chamber is with the pin anti-rotation on the pump housing.Rotor part and stator, diffuser, dividing plate once assemble to finish and refill upper pump casing, and assembling is simple.Dismantle very convenient.Can unload whole rotor part and stator, diffuser, dividing plate as long as pump cover and bearing support bolt unclamped.The forward and reverse even layout of impeller, automatically balancing axial force, the pump rotor component axial is completely fixed, and the reliability and the stability of pump operation improve greatly.
In sum, the utility model is simple in structure, and good seal performance operates steadily, the reliability height.
Description of drawings
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is the utility model structural representation;
Fig. 2 is that schematic representation is looked on the utility model left side.
Among the figure:
The pump housing 1, pump cover 2, guide vane 3, positive impeller 4, stop pin 5, dividing plate 6, guide vane body 7, middle diffuser 8, return guide vane 9, anti-impeller 10, return guide vane body 11, pump housing seal ring 12, stator cover 13, casing ring 14, sealed member 15, axle sleeve 16, sleeve nut 17, bearing support 18, ball bearing (sliding bearing) 19, bearing housing 20, main shaft 21, thrust-bearing (sliding bearing+thrust-bearing) 22, screw 23, pin 24,25, forward and reverse runner 26, the chamber 27 that spues, liquid entering hole 28, liquid outlet 29.
Embodiment
As depicted in figs. 1 and 2, pump case is a middle open type, divides the pump housing 1, pump cover 2 two-part, the pump housing 2, pump cover 1 is provided with guide vane 3 along the shaft axis horizonally split on pump case, positive impeller 4, stop pin 5, dividing plate 6, guide vane body 7, middle diffuser 8, return guide vane 9, anti-impeller 10, return guide vane body 11, pump housing seal ring 12, stator cover 13, casing ring 14, sealed member 15, axle sleeve 16, sleeve nut 17, bearing support 18, ball bearing (sliding bearing) 19, bearing housing 20, main shaft 21, thrust-bearing (sliding bearing+thrust-bearing) 22, screw 23, pin 24,25, forward and reverse runner 26, the chamber 27 that spues, liquid entering hole 28, liquid outlet 29, the average vertically inversion symmetry of impeller is arranged, corresponding stator is reversed arrangement also, liquid entering hole 28, liquid outlet 29 all is arranged on the pump housing 2, and forward and reverse runner 26 is arranged in the pump housing 2; Blade wheel chamber is fixing by stator 3,9, diffuser 7,8,11 and the dividing plate 6 usefulness screws 23 of activity, every grade of blade wheel chamber's pin 5 anti-rotations, and the pin 24,25 on the pump housing 1 prevents that the whole blade wheel chamber of going here and there from rotating; Pump housing seal ring 12 on diffuser 7,8,11 and the stator 3,9 prevents that prime pump chamber liquid from leaking and fixed guide vane body 7,8,11 and stator 3,9 to subordinate's pump chamber, and the chamber 27 that spues of pump case is turbocharger housing structure.
As depicted in figs. 1 and 2, liquid entering hole 28, liquid outlet 29 all are positioned on the pump housing 1, and forward and reverse runner 26 is arranged in the pump housing 1, and forward and reverse runner 26 is an inner flow passage, has significantly reduced potential leakage point, and maintenance the time does not need to dismantle pipeline.The positive and negative vertically even layout of impeller, automatically balancing axial force, the pump rotor component axial is completely fixed, and the reliability and the stability of pump operation improve greatly.Blade wheel chamber is made up of the pump housing 1, pump cover 2, stator 3,9, diffuser 7,8,11 and dividing plate 6, during assembling, rotor part and stator 3,9, diffuser 7,8,11, dividing plate 6 assemblings finishing back integral body place on the pump housing 1, earlier with bearing support 18 and the pump housing 1 bolt tightening, adjust impeller and stator, diffuser gap then, with 17 lockings of two ends sleeve nut, then pump cover 2 is covered the tightening pump housing 1 and pump cover 2 bolts after finishing.After adjusting sealed member at last, with the sealing gland tightening.
During dismounting,, whole rotor part and diffuser, stator, dividing plate can be unloaded as long as the pump housing 1 and pump cover 2 attachment bolts, bearing support and pump housing attachment bolt, sealing gland and pump housing pump cover attachment bolt are unclamped.The assembling and dismantle very convenient.During maintenance, the pump housing 1 can not move, and sucks and the pipeline that spues all need not dismantled.
Claims (4)
1. drive the multistage stator formula of single suction centrifugal pump in one kind, it is characterized in that: pump case is a middle open type, divide the pump housing (1), pump cover (2) two-part, the pump housing (1), pump cover (2) are along the shaft axis horizonally split, impeller inversion symmetry is vertically arranged, corresponding stator is reversed arrangement also, is provided with forward and reverse runner (26), and liquid entering hole (28), liquid outlet (29) all are arranged on the described pump housing (1).
2. drive the multistage stator formula of single suction centrifugal pump in according to claim 1, it is characterized in that: described forward and reverse runner (26) is arranged in the described pump housing (1).
3. drive the multistage stator formula of single suction centrifugal pump in according to claim 1 and 2, it is characterized in that: the blade wheel chamber of described pump case is fixing with screw (23) by stator (3,9), diffuser (7,8,11) and the dividing plate (6) of activity, every grade of blade wheel chamber's pin (5) anti-rotation, the pin on the pump housing (1) (24,25) prevent that the whole blade wheel chamber of going here and there from rotating; Pump housing seal ring (12) on diffuser (7,8,11) and the stator (3,9) prevents that prime pump chamber liquid from leaking and fixed guide vane body (7,8,11) and stator (3,9) to subordinate's pump chamber.
4. drive the multistage stator formula of single suction centrifugal pump in according to claim 1 and 2, it is characterized in that: the chamber that spues (27) of described pump case is turbocharger housing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200638747U CN201090516Y (en) | 2007-07-20 | 2007-07-20 | Middle opening single suction multilevel diffuser centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200638747U CN201090516Y (en) | 2007-07-20 | 2007-07-20 | Middle opening single suction multilevel diffuser centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201090516Y true CN201090516Y (en) | 2008-07-23 |
Family
ID=39862277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200638747U Expired - Fee Related CN201090516Y (en) | 2007-07-20 | 2007-07-20 | Middle opening single suction multilevel diffuser centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201090516Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102102672A (en) * | 2011-03-23 | 2011-06-22 | 兖矿集团有限公司 | Volute type multi-stage centrifugal pump |
| CN101749276B (en) * | 2008-12-17 | 2011-09-07 | 中国船舶重工集团公司第七○四研究所 | Split type deflector |
| CN110081024A (en) * | 2019-03-25 | 2019-08-02 | 沈阳鼓风机集团股份有限公司 | A kind of multistage centrifugal pump and its processing method |
| CN111927784A (en) * | 2020-07-31 | 2020-11-13 | 西安航天动力研究所 | Two-stage centrifugal pump structure |
-
2007
- 2007-07-20 CN CNU2007200638747U patent/CN201090516Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749276B (en) * | 2008-12-17 | 2011-09-07 | 中国船舶重工集团公司第七○四研究所 | Split type deflector |
| CN102102672A (en) * | 2011-03-23 | 2011-06-22 | 兖矿集团有限公司 | Volute type multi-stage centrifugal pump |
| CN110081024A (en) * | 2019-03-25 | 2019-08-02 | 沈阳鼓风机集团股份有限公司 | A kind of multistage centrifugal pump and its processing method |
| CN111927784A (en) * | 2020-07-31 | 2020-11-13 | 西安航天动力研究所 | Two-stage centrifugal pump structure |
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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 |
Granted publication date: 20080723 Termination date: 20150720 |
|
| EXPY | Termination of patent right or utility model |