CN101725535B - Open type transient centrifugal pump - Google Patents
Open type transient centrifugal pump Download PDFInfo
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- CN101725535B CN101725535B CN2009101538345A CN200910153834A CN101725535B CN 101725535 B CN101725535 B CN 101725535B CN 2009101538345 A CN2009101538345 A CN 2009101538345A CN 200910153834 A CN200910153834 A CN 200910153834A CN 101725535 B CN101725535 B CN 101725535B
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- 230000001052 transient effect Effects 0.000 title claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
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- 238000009792 diffusion process Methods 0.000 abstract description 9
- 238000007599 discharging Methods 0.000 abstract description 4
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- 238000000034 method Methods 0.000 description 12
- 239000012530 fluid Substances 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 238000007789 sealing Methods 0.000 description 10
- 230000008878 coupling Effects 0.000 description 8
- 238000010168 coupling process Methods 0.000 description 8
- 238000005859 coupling reaction Methods 0.000 description 8
- 230000003068 static effect Effects 0.000 description 7
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Abstract
The invention discloses an open type transient centrifugal pump comprising a stator component, a rotor component and a driving component, wherein the stator component comprises a driving end support, a sucking end support, a sucking tube, a guide vane body, a discharging port and a pulsed water tank, two side walls of the pulsed water tank are respectively and hermetically connected with the driving end support and the sucking end support, the guide vane body is in a radial open type structure and is fixed on the side of the sucking end support, which is near to the rotor component, and the discharging port is installed on the pulsed water tank. The invention adopts the pump structure form that the radial open type pressure-diffusion structure is combined with the pulsed water tank, and has the advantages of compact structure and high reliability and efficiency of transient operation, and avoids oversize impact when having high transient delivery lift.
Description
Technical field
The present invention relates to a kind of centrifugal pump, a kind of open type centrifugal pump that is used under the transient operation condition of saying so more specifically belongs to fluid dynamic equipment and universal machine technical field.
Background technique
Centrifugal water pump comprises several types such as centrifugal pump, mixed flow pump and axial-flow pump, all is widely used in industry, agricultural, water conservancy irrigation, Aero-Space and each field of national defence all departments.The water flowing out structure of the one-stage centrifugal formula water pump of extensive use at present all adopts scroll casing type structure, radially stator or spatial guide blade formula structure, and the centrifugal pump design of these several structures has also had comparatively ripe method.Wherein, the scroll casing type water pump mainly is made up of prime mover, spiral case, impeller, pump shaft, inlet tube and outer pipe etc., the fluid that impeller outlet is discharged is collected by spiral case by radial direction, and discharges from outlet pipe, and this structure is applicable to centrifugal pump and the mixed flow pump that specific speed is lower mostly; Spatial guide blade formula water pump mainly is made up of prime mover, impeller, diffuser, pump shaft, inlet tube and outer pipe etc., stator and the diffusing tube of the liquid that impeller outlet is discharged from axial direction process diffuser, and from the outlet pipe discharge, this structure is applicable to higher specific speed mixed flow pump and axial-flow pump mostly; And radially stator formula structure is mainly used in multistage centrifugal pump, and part is used for the single stage centrifugal pump of low-specific-speed.In general purposes, it is suitable adopting above-mentioned concentrated common centrifugal pump structure form, and can be designed to various ways such as vertical structure, horizontal type structure or clino-axis type structure, but for some special mounting structures or manufacturing process demand, common centrifugal pump structure is difficult to be suitable for, based on the working principle that centrifugal impeller provides energy and diffuser to realize transformation of energy, combining structure and performance requirement design particular structure seem necessary.
On the other hand, Ordinary Centrifugal Pumps is used for fluid pressurized and flowing medium mostly under steady-state working condition carries, in operation process, and parameter kept stable states such as its rotating speed, flow and lift, or slow the variation takes place to change by a small margin or only take place.But,, need utilize the rotating speed of centrifugal pump to uprush or the fluid dynamic of transient operation generation such as pipe valve unlatchings suddenly moment in some applications that utilizes centrifugal pump transient operation operating mode to produce fluid impact power and realize the moment FLUID TRANSPORTATION.Under various transient operation conditions, parameters such as the rotating speed of centrifugal pump, flow and lift change in time fast, correspondingly make its transient working characteristic obviously be different from steady-state process, produce phenomenons such as mobile transient state evolution state of pump inner fluid and the impact of corresponding instantaneous pressure, fluid inertia loss, promptly produce tangible transient effect, these phenomenons need give to consider in the flow passage components structural design, need avoid in the transient process pump fluid velocity inside to change fast bringing excessive flow losses and to structural damage.Simultaneously, except the difference of considering centrifugal pump transient working characteristic and steady-state process, because the particularity of the required mounting structure in application and the demand that improves transient operation process operation efficient, the centrifugal pump that runs under the transient operation condition must adopt brand-new structural type, this structure is different from common scroll casing type and stator formula centrifugal pump structure, and this class centrifugal pump structure still do not have ready-made product at home and abroad can be for reference.
Be specifically designed to the open type transient centrifugal pump of transient operation process, at first must guarantee the stable state hydraulic performance under the stabilization of speed condition; Secondly, need guarantee start fast and the unexpected unlocking condition of pipe valve under have reliable mapping, avoid excessive impact when having higher transient state lift; At last, satisfy compact structure under the prerequisite that special mounting structural type requires.Because the realization of structure and performance requirement checks and balance and influences, brand-new open type transient centrifugal pump must adopt a kind of specified structure demand that promptly satisfies, and can reach the structural type of best transient working demand again.The present invention just from this need, the pump body structure form that adopts open type diffusion structure radially to combine, design open type transient centrifugal pump with the pulse water tank.
Summary of the invention
The present invention seeks to according to the application demand that realizes the moment FLUID TRANSPORTATION under the centrifugal pump transient operation condition, a kind of compact structure that is different from common scroll casing type and stator formula centrifugal pump, stable, transient operation reliability and all higher open type transient centrifugal pump of efficient are provided.
The present invention seeks to be achieved through the following technical solutions:
A kind of open type transient centrifugal pump comprises stator component, rotor part and driver part, and described stator component comprises diffuser, the exhaust port of drive end bearing, suction side bearing, suction pipe, annular; Described driver part comprises prime mover; Described rotor part comprises pump shaft and impeller, suction pipe is fixed on a side of suction side bearing, rotor part and prime mover are positioned at the opposite side of suction side bearing successively, described pump shaft is connected with prime mover, bearing support is used to be positioned at the outer passive bearing of pump shaft, the drive end bearing is fixedlyed connected with bearing support, described stator component also comprises the pulse water tank, two sidewalls of pulse water tank respectively with drive end bearing and suction side bearing sealed attachment, described diffuser one end is fixed on that side of close rotor part on the bearing of suction side, forms an annular water outlet between the other end bending and the drive end bearing; The exhaust port of described stator component is installed on the pulse water tank.
Further improvement project as open type transient centrifugal pump of the present invention: it is parallel with the pump shaft center line that described diffuser one end is folded into the outlet, forms ring-like radially water outlet, and such structure has higher transient state lift.
It is vertical with the pump shaft center line that one end of described diffuser is folded into the outlet, forms the ring shaped axial water outlet.
One end of described diffuser is folded into the outlet and pump shaft center line angle is an acute angle, forms annular oblique water outlet.
On the described diffuser stator is installed, can realizes the conversion of dynamic head better, improve the hydraulic performance of open type transient centrifugal pump to static pressure head.
The quantity of described stator is 4 to 7.
Described stator evenly distributes along the diffuser circumferencial direction.
Described pulse water tank is equipped with the water tank stiffening rib, improves the rigidity of pulse water tank.
Described pulse water tank side and top are provided with transparent window, and the flow condition of observable water tank and impeller inside is realized the visualization measurement of internal flow as required.
The pump body structure form that the present invention adopts open type diffusion structure radially to combine with the pulse water tank, compact structure has been avoided excessive impact when having higher transient state lift, and transient operation reliability and efficient are all higher.
Description of drawings
Fig. 1 is the structural representation of open type transient centrifugal pump.
Fig. 2 is the right elevation of Fig. 1.
Wherein: 1, impeller; 2, sealing opening ring; 3, suction side bearing; 4, impeller nut; 5, suction pipe; , 6, the water tank stiffening rib; 7, pulse water tank; 8, prime mover bearing; 9, coupling 9; 10, prime mover; 11, set screw nut; 12, thrust-bearing; 13, radial bearing; 14, roller bearing; 15, rotation axis seal; 16, bearing support; 17, drive end bearing; 18, stator; 19, exhaust port; 20, diffuser; 21, pump shaft; 22, key.
Embodiment
Embodiment 1:
The open type transient centrifugal pump of present embodiment as shown in Figure 1, it adopts horizontal type structure, comprise stator component, rotor part and driver part, stator component comprises that the bearing support 16, drive end bearing 17, pump of pulse water tank 7, prime mover side discharge exhaust port 19, the suction pipe 5 of pump suction side, suction side bearing 3, sealing opening ring 2, the diffuser 20 of side; Drive end bearing 17 and suction side bearing 3 respectively with two sidewall sealed attachment of pulse water tank 7, form blade wheel chamber by drive end bearing 17 and suction side bearing 3, form the diffusion body by drive end bearing 17 and diffuser 20, realize fluid-tight by the rotation axis seal 15 that is installed on the drive end bearing 17; Rotor part comprises impeller nut 4, impeller 1, the pump shaft 21 that connects successively, and it is terminal also by key 22 connections that impeller 1 is installed in pump shaft 21, and pump shaft 21 supports by the thrust-bearing 12 on the bearing support 16, radial bearing 13, roller bearing 14; Driver part comprises prime mover 10 and prime mover bearing 8, and prime mover 10 is supported by prime mover bearing 8, and connects by coupling 9 and pump shaft 21.
Impeller 1 adopts double shrouded wheel, and the number of blade is 5, and diffuser 20 adopts radially open type structure and ring-like radially water outlet, and stator 18 is installed in the diffuser 20, and the stator number is 7.
The combined sealing structure that rotation axis seal 15 adopts mechanical seal, static seal and emergent sealing to form, the sealing of static seal hydraulic efficiency slide valve formula, packing seal structure is adopted in emergent sealing.
Prime mover 10 is made up of turbo machine and retarder, and its output maximum speed is 1200r/min, and rotating speed can electrodeless adjusting from 0 to 1200r/min.
In the course of the work, prime mover 10 drives pump shaft 21 and impeller 1 fast rotational starts, open type transient centrifugal pump is from the pulse water tank 7 outside liquid that suck, process suction port 5 and suction side bearing 3 enter the inlet of impeller 1, because the acceleration of impeller 1 rotation, liquid is discharged from the outlet of impeller 1 with certain speed and pressure, the liquid of discharging from impeller 1 enters diffuser 20 from oblique direction, and the effect of process stator 18 and diffuser makes part kinetic energy be converted into static energy, pulsating water case 7 is exported and entered to liquid through diffuser 20 from the annular radial water outlet, for pulse water tank 7 liquid make-up and produce the surge pressure of moment, thereby make in the exhaust port 19 that is installed on the pulse water tank 7 moments discharge liquid with certain surge pressure.Realize the fundamental function of this embodiment's open type transient centrifugal pump thus.
Embodiment 2:
The open type transient centrifugal pump of present embodiment as shown in Figure 1, it adopts horizontal type structure, comprise stator component, rotor part and driver part, stator component comprises pulse water tank 7, the bearing support 16 of prime mover side, drive end bearing 17, pump is discharged the exhaust port 19 of side, the suction pipe 5 of pump suction side, suction side bearing 3, sealing opening ring 2, diffuser 20, drive end bearing 17 and suction side bearing 3 respectively with two sidewall sealed attachment of pulse water tank 7, form blade wheel chamber by drive end bearing 17 and suction side bearing 3, form the diffusion body by drive end bearing 17 and diffuser 20, realize fluid-tight by the rotation axis seal 15 that is installed on the drive end bearing 17; Rotor part comprises impeller nut 4, impeller 1, the pump shaft 21 that connects successively, and it is terminal also by key 22 connections that impeller 1 is installed in pump shaft 21, and pump shaft 21 supports by the thrust-bearing 12 on the bearing support 16, radial bearing 13, roller bearing 14; Driver part comprises prime mover 10 and prime mover bearing 8, and prime mover 10 is supported by prime mover bearing 8, and connects by coupling 9 and pump shaft 21.
Impeller 1 adopts half-opened impeller, and the number of blade is 4, and diffuser 20 adopts radially open type structure and ring-like oblique water outlet, and being made up of in the diffusion body drive end bearing 17 and diffuser 20 does not have stator.
The combined sealing structure that rotation axis seal 15 adopts mechanical seal, static seal and emergent sealing to form, packing seal structure is adopted in static seal and emergent sealing.
In the course of the work, prime mover 10 drives pump shaft 21 and impeller 1 fast rotational starts, open type transient centrifugal pump is from the pulse water tank 7 outside liquid that suck, process suction port 5 and suction side bearing 3 enter the inlet of impeller 1, because the acceleration of impeller 1 rotation, liquid is discharged from the outlet of impeller 1 with certain speed and pressure, the liquid of discharging from impeller 1 enters by drive end bearing 17 and diffuser 20 from oblique direction forms the diffusion body, and the effect of process diffusion body makes part kinetic energy be converted into static energy, pulsating water case 7 is exported and entered to liquid through the diffusion body from the oblique water outlet of annular, for pulse water tank 7 liquid make-up and produce the surge pressure of moment, thereby make in the exhaust port 19 that is installed on the pulse water tank 7 moments discharge liquid with certain surge pressure.Realize the fundamental function of this embodiment's open type transient centrifugal pump thus.
At last, it is also to be noted that what more than enumerate only is two specific embodiments of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be arranged.All distortion that those skilled in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (8)
1. an open type transient centrifugal pump comprises stator component, rotor part and driver part, and described stator component comprises diffuser (20), the exhaust port (19) of drive end bearing (17), suction side bearing (3), suction pipe (5), annular; Described driver part comprises prime mover (10); Described rotor part comprises pump shaft (21) and impeller (1); Suction pipe (5) is fixed on a side of suction side bearing (3), rotor part and prime mover (10) are positioned at the opposite side of suction side bearing (3) successively, described pump shaft (21) is connected with prime mover (10), bearing support (16) is used to be positioned at the outer passive bearing of pump shaft (21), drive end bearing (17) is fixedlyed connected with bearing support (16), it is characterized in that: described stator component also comprises pulse water tank (7), two sidewalls of pulse water tank (7) respectively with drive end bearing (17) and suction side bearing (3) sealed attachment; Described diffuser (20) one ends are fixed on that side that suction side bearing (3) is gone up close rotor part, form an annular water outlet between the other end bending and the drive end bearing (17); The exhaust port of described stator component (19) is installed on the pulse water tank (7);
Stator (18) is installed on the described diffuser (20).
2. open type transient centrifugal pump as claimed in claim 1 is characterized in that: it is parallel with the pump shaft center line that an end of described diffuser is folded into the outlet, forms ring-like radially water outlet.
3. open type transient centrifugal pump as claimed in claim 1 is characterized in that: it is vertical with the pump shaft center line that an end of described diffuser is folded into the outlet, forms the ring shaped axial water outlet.
4. open type transient centrifugal pump as claimed in claim 1 is characterized in that: an end of described diffuser is folded into the outlet and pump shaft center line angle is an acute angle, forms annular oblique water outlet.
5. open type transient centrifugal pump as claimed in claim 1 is characterized in that: the quantity of described stator is 4 to 7.
6. open type transient centrifugal pump as claimed in claim 5 is characterized in that: described stator evenly distributes along the diffuser circumferencial direction.
7. open type transient centrifugal pump as claimed in claim 1 is characterized in that: described pulse water tank (7) is equipped with water tank stiffening rib (6).
8. open type transient centrifugal pump as claimed in claim 1 is characterized in that: described pulse water tank (7) side and top are provided with transparent window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101538345A CN101725535B (en) | 2009-11-16 | 2009-11-16 | Open type transient centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101538345A CN101725535B (en) | 2009-11-16 | 2009-11-16 | Open type transient centrifugal pump |
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| Publication Number | Publication Date |
|---|---|
| CN101725535A CN101725535A (en) | 2010-06-09 |
| CN101725535B true CN101725535B (en) | 2011-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101538345A Expired - Fee Related CN101725535B (en) | 2009-11-16 | 2009-11-16 | Open type transient centrifugal pump |
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| Country | Link |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4050846A (en) * | 1975-06-25 | 1977-09-27 | Klein, Schanzlin & Becker Aktiengesellschaft | Fluid circulating apparatus |
| CA2015777A1 (en) * | 1990-04-30 | 1991-10-31 | Lynn P. Tessier | Centrifugal pump |
| CN201027656Y (en) * | 2006-09-19 | 2008-02-27 | 邹节廉 | Speed-adjusting main feed pump of energy-saving hydraulic coupler |
-
2009
- 2009-11-16 CN CN2009101538345A patent/CN101725535B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4050846A (en) * | 1975-06-25 | 1977-09-27 | Klein, Schanzlin & Becker Aktiengesellschaft | Fluid circulating apparatus |
| CA2015777A1 (en) * | 1990-04-30 | 1991-10-31 | Lynn P. Tessier | Centrifugal pump |
| CN201027656Y (en) * | 2006-09-19 | 2008-02-27 | 邹节廉 | Speed-adjusting main feed pump of energy-saving hydraulic coupler |
Non-Patent Citations (2)
| Title |
|---|
| 施卫东.望虞河开敞式轴流泵装置模型试验研究.《中国农村水利水电》.1997,(第09期),34-48. * |
| 曾正等.开敞式轴流泵评析与探讨.《水泵技术》.1998,(第04期),16-19. * |
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| CN101725535A (en) | 2010-06-09 |
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Application publication date: 20100609 Assignee: JUNHE PUMPS HOLDING Co.,Ltd. Assignor: Zhejiang University Contract record no.: 2014330000400 Denomination of invention: Open type transient centrifugal pump Granted publication date: 20110810 License type: Common License Record date: 20141017 |
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Granted publication date: 20110810 Termination date: 20211116 |