CN205478555U - Centrifugal pump side direction formula spiral delivery chamber - Google Patents
Centrifugal pump side direction formula spiral delivery chamber Download PDFInfo
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- CN205478555U CN205478555U CN201620025776.3U CN201620025776U CN205478555U CN 205478555 U CN205478555 U CN 205478555U CN 201620025776 U CN201620025776 U CN 201620025776U CN 205478555 U CN205478555 U CN 205478555U
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- delivery chamber
- diffuser
- spiral
- side direction
- axial
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Abstract
The utility model relates to a centrifugal pump side direction formula spiral delivery chamber comprises axial spiral diffuser and export diffuser, and the radial width of axial spiral diffuser is unanimous, imports to exporting the diffuser import from the delivery chamber, and each section projected area of axial spiral diffuser is crescent along axial direction. Compare with general spiral delivery chamber, its fluid diffusion mode becomes the axial diffusion by the radial diffusion, and is creative, side direction spiral delivery chamber is applicable to the various centrifugal pumps that low vibration required that have, compares with general spiral delivery chamber, all can effectively reduce the vibration level of pump in all flow range, and it is especially obvious to descend in best flow range internal vibration level, and the practicality is strong, side direction formula spiral delivery chamber can effectively reduce to be used in the fluid dynamic radial force on the pump rotor, and along with the increasing of pumping flow operating mode, its radial force value can level and smoothly descend, and it all is less that its value is compared with general spiral spiral case in all flow range, and the effect more under the inclined to one side operating mode circumstances.
Description
Technical field
This utility model relates to a kind of side direction type spiral type delivery chamber, it is adaptable to scroll casing type low-vibration noise is centrifuged
Pump.If the industry fields such as power station, metallurgy, petrochemical industry, ocean and naval vessel are with having the centrifugal pump that low vibration requires.
Background technology
Existing centrifugal pump typically uses spiral type delivery chamber to collect the medium that impeller outlet flows out, by medium velocity
Pressure energy can be converted into, eliminate impeller and flow out the rotary motion of medium, reduce medium hydraulic loss in pump,
And liquid is delivered to outlet or next stage suction eye.Centrifugal pump is with design conditions media flow parameter
The structure design of spiral type delivery chamber, medium speed in delivery chamber and pressure this moment is carried out for design considerations
Being axial symmetry distribution, acting on making a concerted effort on impeller in theory is zero.Time actually used, water pump often in
Partially operating mode operating, spiral type delivery chamber is uneven distribution from cut water to outlet pressure medium and flow velocity, thus
Produce and act on the radial force on impeller, make axle by alternate stress effect, produce the amount of deflection of orientation, add
The vibration noise of pump, affects the running life of pump group.
Configure the centrifugal pump of general spiral type delivery chamber, in inclined operating mode operation process, spiral type delivery chamber from
Cut water is uneven distribution to outlet pressure medium and flow velocity, thus produces and act on the radial force on impeller,
Make axle by alternate stress effect, it is easy to produce the amount of deflection of orientation, add the vibration noise of pump, affect pump group
Running life.Finding through inspection information, the most domestic not yet have centrifugal pump side direction type spiral type to extrude
The application example of room.
Along with pump group operating condition scope and vibration noise requirement are improved constantly by each field, carrying out water pump
During design, it is necessary to take into account the runnability under its multi-state and vibration noise characteristic.For above-mentioned situation,
Use side direction type spirality Crucible shell, can effectively reduce the radial force in all range of flows, and reduce centrifugal
The vibration noise level of pump.
Summary of the invention
When the purpose of this utility model is to overcome centrifugal pump general spiral type delivery chamber inclined operating mode, radial force is relatively
Greatly, level of vibration increases problem, and provides a kind of centrifugal pump side direction type spiral type delivery chamber, is used for reducing work
The radial force being used on pump rotor, and reduce the global vibration noise level of pump.
For achieving the above object, the technical solution of the utility model is: a kind of centrifugal pump side direction type spiral type pressure
Go out room, be made up of axial screw diffuser and outlet diffuser, described axial screw diffuser radial width one
Cause, from delivery chamber import to outlet diffuser import, the cross sections perspective plane of described axial screw diffuser
Amass and be in axial direction gradually increased.
An angle theta is had between described outlet diffuser and sagittal plane.
Described axial screw diffuser be shaped as in rectangle, circle, trapezoidal or ellipse any one.
The beneficial effects of the utility model are:
The technique effect that this utility model employing side direction type spiral type delivery chamber produces:
1, compared with general spiral type delivery chamber, its fluid diffusion way is become axially diffusing from radial diffusion,
Creative.
2, lateral spiral type delivery chamber is applicable to the various centrifugal pump with low vibration requirement, with general spiral type
Delivery chamber is compared, and all can effectively reduce the level of vibration of pump, in optimal flow scope in all range of flows
The decline of internal vibration level is especially apparent, practical.
3, side direction type spiral type delivery chamber can effectively reduce the fluid dynamic radial force acted on pump rotor,
Along with the increasing of pump discharge operating mode, its radially force value can smooth decline, its value in all range of flows with one
As spirality Crucible shell to compare be all less, in the case of inclined operating mode, effect is more, has novelty.
Accompanying drawing explanation
Fig. 1 is the structural front view of centrifugal pump side direction type spiral type delivery chamber of the present utility model；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is outlet diffuser form signal；
Fig. 4 is lateral spirality Crucible shell axial section configuration projection；
Fig. 5 is axial screw diffuser different section schematic shapes；
Wherein: (a) is circular, and (b) is trapezoidal, and (c) is multi-section circular arc.
Detailed description of the invention
Below in conjunction with the accompanying drawings embodiment of the present utility model is elaborated:
Such as Fig. 1, shown in 2, the present embodiment is lateral spirality Crucible shell hydraulic structure, and its structure can be according to difference
Parameter centrifugal pump carries out adaptability design.Wherein D3 is delivery chamber base circle diameter (BCD), and B is delivery chamber inducer footpath
To width, along with section variation, width B keeps constant to lateral spiral type delivery chamber.Extrude fluid inside stream
First pass through axial screw diffuser 1 time dynamic, discharged by outlet diffuser 2 subsequently, outlet diffuser 2 with
Certain angle theta is had between sagittal plane.The shape of outlet diffuser 2 can carry out adaptability according to actual requirement and set
Meter, as it is shown on figure 3, outlet diffuser is not limited to schematic forms in Fig. 1, Fig. 2, Fig. 3.This utility model
According to centrifugal technical data required for the pump, design side direction type spiral type delivery chamber hydraulic structure, mainly by axial screw
Diffuser 1 and outlet diffuser 2 form (Fig. 1,2).It is characterized in axial screw diffuser 1 radial width
Keep constant, project to outlet diffuser import, axial screw diffuser 1 cross sections from delivery chamber import
Area is in axial direction gradually increased (Fig. 4).
Lateral spirality Crucible shell axial section configuration projection as shown in Figure 4, take 8 the most at 45 °
Section is illustrated, cross sections area is gradually increased vertically with angle difference.Section configuration can adapt to
Property design such as Fig. 4,5a, 5b, 5c, but be not limited to schematic forms in Fig. 5, Fig. 5 a, 5b, 5c.
General spiral type delivery chamber and side direction type spiral type delivery chamber of the present utility model compare:
Claims (3)
1. a centrifugal pump side direction type spiral type delivery chamber, it is made up of axial screw diffuser (1) and outlet diffuser (2), it is characterized in that: described axial screw diffuser (1) radial width is consistent, from delivery chamber import to outlet diffuser import, the cross sections projected area of described axial screw diffuser (1) is in axial direction gradually increased.
Centrifugal pump side direction type spiral type delivery chamber the most according to claim 1, it is characterised in that: there is an angle theta between described outlet diffuser (1) and sagittal plane.
Centrifugal pump side direction type spiral type delivery chamber the most according to claim 1 and 2, it is characterised in that: described axial screw diffuser (1) be shaped as in rectangle, circle, trapezoidal or ellipse any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620025776.3U CN205478555U (en) | 2016-01-12 | 2016-01-12 | Centrifugal pump side direction formula spiral delivery chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620025776.3U CN205478555U (en) | 2016-01-12 | 2016-01-12 | Centrifugal pump side direction formula spiral delivery chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205478555U true CN205478555U (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620025776.3U Active CN205478555U (en) | 2016-01-12 | 2016-01-12 | Centrifugal pump side direction formula spiral delivery chamber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422512A (en) * | 2016-01-12 | 2016-03-23 | 中国船舶重工集团公司第七0四研究所 | Lateral type spiral delivery chamber of centrifugal pump |
-
2016
- 2016-01-12 CN CN201620025776.3U patent/CN205478555U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422512A (en) * | 2016-01-12 | 2016-03-23 | 中国船舶重工集团公司第七0四研究所 | Lateral type spiral delivery chamber of centrifugal pump |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |