CN202520574U - Guide vane type submersible centrifugal pump - Google Patents
Guide vane type submersible centrifugal pump Download PDFInfo
- Publication number
- CN202520574U CN202520574U CN2012201101735U CN201220110173U CN202520574U CN 202520574 U CN202520574 U CN 202520574U CN 2012201101735 U CN2012201101735 U CN 2012201101735U CN 201220110173 U CN201220110173 U CN 201220110173U CN 202520574 U CN202520574 U CN 202520574U
- Authority
- CN
- China
- Prior art keywords
- guide vane
- centrifugal pump
- impeller
- stator
- guide blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000009434 installation Methods 0.000 description 8
- 210000004907 gland Anatomy 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a guide vane type submerged centrifugal pump, which comprises a submersible motor, an impeller, a space guide vane and a water inlet trumpet, wherein the impeller is arranged on a rotor shaft of the submersible motor; the space guide vane is arranged at the lower end of the submersible motor; the water inlet trumpet is arranged at the lower end of the space guide vane; the space guide vane consists of a guide vane inner ring, a guide vane outer ring and a plurality of guide vanes arranged between the guide vane inner ring and the guide vane outer ring; the plurality of guide vanes are uniformly distributed on the circumference; and the space guide vane is provided with a pressure relief pipeline which is communicated with the inner cavity of the guide vane inner ring and the outside of the guide vane outer ring.
Description
Technical field
The utility model belongs to the hydraulic machinery technical field, relates to a kind of submerged centrifugal pump.
Background technique
Centrifugal pump has obtained application as a time-honored pump type in many occasions.In recent years, along with the development of diving technology, submerged centrifugal pump has also obtained utilization widely.But along with the raising of performance of centrifugal pump parameter, flow is increasing, and lift is increasingly high, and traditional submerged centrifugal pump structural type and mounting type have exposed many deficiencys.
The structural type that traditional submerged centrifugal pump is normally such: mainly comprise two parts, a part is a submersible motor, and a part is a hydraulic part.Hydraulic part mainly comprises impeller, spiral case, and the rotor shaft end of submersible motor is equipped with impeller, and impeller is worked in spiral case.Spiral case is a kind of as pumping chamber, and main effect is the liquid that the collection impeller flows out, and the flow of fluid that impeller is flowed out in assurance is axisymmetric, reduces the speed of flow, and converts the kinetic energy of flow to the pressure ability; Eliminate the rotational speed of liquid, avoid the hydraulic loss that causes thus.When centrifugal pump moved at design conditions point, speed and the pressure of liquid in the spiral case around the impeller was uniform, axisymmetric, does not have radial force in theory; When centrifugal pump off-design operating point moved, spiral case can not guarantee that flowing out the mobile of impeller is axisymmetric, so produce very big radial force this moment, this radial force can't be calculated at present accurately.But, reduce the working life of bearing because the existence of this radial force will make bearing bear extra load.
The installation form of now general submerged centrifugal pump is as shown in Figure 3, mainly comprises installation accessoriess such as base, support; The water outlet of submerged centrifugal pump is equipped with a support, and whole water pump hangs on the base through support, and forms a cantilever structure.As can be seen from the figure, the axial force that produces during pump operation and the weight of pump will produce a turning torque to base, and this moment can't balance, are born by the stone bolt of mounting base.The axial force that produces during water pump operation is relevant with lift of pump, and along with increasing of lift, the axial force that produces during pump operation increases.And along with the raising of performance parameter, the weight of pump is also in continuous increase.The turning torque that these factors cause base to bear is increasing, produces faults such as vibration, conduit failure when causing operation.There is very big potential safety hazard, seriously restricts the large scale development of submerged centrifugal pump.
The model utility content
Technical problem:The utility model provides a kind of improves the shaft strength situation, prolong bearing working life, reduce fault, reduce axial force of impeller, reduce to install the stator formula submerged centrifugal pump of basic bearing load.
Technological scheme:The stator formula submerged centrifugal pump of the utility model; Comprise submersible motor, impeller, spatial guide blade and water inlet loudspeaker; Impeller is installed on the rotor shaft of submersible motor; Spatial guide blade is installed in the lower end of submersible motor, and the water inlet loudspeaker are installed in the lower end of spatial guide blade, spatial guide blade by stator inner ring, stator outer ring and be installed in the stator inner ring and the stator outer ring between a plurality of guide vanes form; A plurality of guide vanes evenly distribute on circumference, and spatial guide blade is provided with and is communicated with the outside relief pipeline of stator inner ring internal cavity and stator outer ring.
In the utility model, be provided with labyrinth gland between stator inner ring and the impeller.
Beneficial effect:Compared with prior art, the utlity model has following advantage:
1. pumping chamber adopts the structural type of spatial guide blade, and spatial guide blade is made up of a plurality of guide vanes between stator inner ring, stator outer ring and the Internal and external cycle, and guide vane along the circumferential direction is equally distributed, so the radial force that produces can access balance completely.Because the mutual balance of radial force that each guide vane produces can be eliminated radial force fully, even the operation of water pump off-design operating point can not produce radial force yet, so just improved the stressing conditions of bearing, prolong the working life of bearing, reduce the generation of fault.
2. between stator inner ring internal cavity and outside, stator outer ring, be provided with relief pipeline; The stator inner chamber is communicated with outside water body through relief pipeline; The pressure of stator inner chamber and the pressure of outside water body equate that (it is identical with the static pressure of the identical water surface of water inlet pool that the pressure at the impeller back side is reduced to; The pressure of common outside water body can not surpass the 10m water column), greatly balance the axial force that produces during the impeller operation.So just improve the stressing conditions of bearing, reduced bearing load, prolonged the working life of bearing, reduced the generation of fault; And because pressure reduces, improved the working environment of mechanical seal simultaneously, the working life of prolonged mechanical sealing, thus improved the global reliability of pump.The relief pipeline that is provided with on the spatial guide blade has reduced the axial force that impeller produces, and can reduce to install the load that bear on the basis, practices thrift the expenditure of construction that the basis is installed.
3. be provided with labyrinth gland between impeller and the stator inner ring, the pressure flow that flows out from impeller is through after the labyrinth gland, because the damping function of labyrinth seal gets into after the inner chamber of spatial guide blade, pressure greatly reduces.Through the iris action of this seal arrangement, reduce the pressure of spatial guide blade inner chamber (being the impeller back side)
4. adopt the pit shaft formula to install, wellbore bottom is furnished with the seat ring that water pump is installed usefulness, has and looks for middle function automatically, and is easy for installation.Compare with the mounting type of existing submerged centrifugal pump, after employing pit shaft formula is installed, improve the force way that the basis is installed; Thrust load is only born on the basis; Vibration or the conduit failure of avoiding turning torque to cause eliminate safe hidden trouble, and help submerged centrifugal pump to large scale development; And because the change of mounting type makes easier for installation, quick.
Description of drawings
Fig. 1 is the structural drawing of the utility model centrifugal pump;
Fig. 2 is the spatial guide blade structural drawing of the utility model centrifugal pump;
Fig. 3 is the scheme of installation of the utility model centrifugal pump;
Fig. 4 is existing submerged centrifugal pump scheme of installation.
Have among the figure: submersible motor 1, rotor shaft 2, spatial guide blade 3, water inlet loudspeaker 4, seal ring 5, impeller 6, mechanical seal 7, dunnage 9, basis 10, pit shaft 11, seat ring 12, submerged centrifugal pump 13, support 14, base 15, relief pipeline 31, stator inner ring 32, guide vane 33, the conical surface 34, stator outer ring 35, labyrinth gland 61.
Embodiment
As shown in Figure 1; The stator formula submerged centrifugal pump of the utility model comprises submersible motor 1, impeller 6, spatial guide blade 3 and water inlet loudspeaker 4, and impeller 6 is assemblied on the rotor shaft 2 of submersible motor 1; Spatial guide blade 3 is installed in the lower end of submersible motor 1, and water inlet loudspeaker 4 are installed in the lower end of spatial guide blade 3.Spatial guide blade 3 by stator inner ring 32, stator outer ring 35 and be installed in stator inner ring 32 and stator outer ring 35 between a plurality of guide vanes 33 form; A plurality of guide vanes 33 evenly distribute on circumference, and spatial guide blade 3 is provided with the relief pipeline 31 that is communicated with stator inner ring 32 internal cavities and 35 outsides, stator outer ring.
Among another embodiment of the utility model, be provided with labyrinth gland 61 between stator inner ring 32 and the impeller 6.The exterior design of spatial guide blade 3 has the conical surface of being convenient to install, and the groove that O shape circle is installed is arranged on the conical surface, and relief pipeline 31 is positioned at the below of this conical surface.After the water pump installation, relief pipeline is positioned at the outside of pit shaft, and relief pipeline is actually a connecting pipe between stator inner ring 32 internal cavities and the outside water body.Seal ring 5 is equipped with in the outlet port of water inlet loudspeaker 4.
The stator formula submerged centrifugal pump of the utility model is mainly installed through pit shaft.As shown in Figure 3, pit shaft 11 is installed on the basis 10 through dunnage 9, and wellbore bottom is provided with the seat ring 12 that pump is installed, and the excircle of spatial guide blade is provided with the conical surface, is convenient to automatic installation; Stator formula submerged centrifugal pump is installed on the seat ring 12 in the pit shaft through the conical surface on the stator cylindrical.
Claims (1)
1. stator formula submerged centrifugal pump; It is characterized in that; Comprise submersible motor (1), impeller (6), spatial guide blade (3) and water inlet loudspeaker (4); Said impeller (6) is installed on the rotor shaft (2) of submersible motor (1); Said spatial guide blade (3) is installed in the lower end of submersible motor (1), and said water inlet loudspeaker (4) are installed in the lower end of spatial guide blade (3), spatial guide blade (3) by stator inner ring (32), stator outer ring (35) and be installed in said stator inner ring (32) and stator outer ring (35) between a plurality of guide vanes (33) form; Said a plurality of guide vane (33) evenly distributes on circumference, and said spatial guide blade (3) is provided with and is communicated with stator inner ring (32) internal cavity and stator outer ring (35) outside relief pipeline (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201101735U CN202520574U (en) | 2012-03-22 | 2012-03-22 | Guide vane type submersible centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201101735U CN202520574U (en) | 2012-03-22 | 2012-03-22 | Guide vane type submersible centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202520574U true CN202520574U (en) | 2012-11-07 |
Family
ID=47103526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201101735U Expired - Lifetime CN202520574U (en) | 2012-03-22 | 2012-03-22 | Guide vane type submersible centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202520574U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488613A (en) * | 2019-01-14 | 2019-03-19 | 湖南赛锘工业技术有限公司 | Encapsulating method at a kind of Efficient safe intelligent electric immersed pump and line outlet |
| CN111365243A (en) * | 2020-03-10 | 2020-07-03 | 浙江省水利河口研究院 | Centrifugal pump flow passage component capable of lengthening shaft and centrifugal pump |
-
2012
- 2012-03-22 CN CN2012201101735U patent/CN202520574U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488613A (en) * | 2019-01-14 | 2019-03-19 | 湖南赛锘工业技术有限公司 | Encapsulating method at a kind of Efficient safe intelligent electric immersed pump and line outlet |
| CN111365243A (en) * | 2020-03-10 | 2020-07-03 | 浙江省水利河口研究院 | Centrifugal pump flow passage component capable of lengthening shaft and centrifugal pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: LANSHEN GROUP CO., LTD. Free format text: FORMER NAME: LANSHEN PUMP GROUP CO LTD, NANJING |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 211500 Nanjing Province, Liuhe District, East Road, No. Patentee after: Lanshen Group Co., Ltd. Address before: 211500 Nanjing Province, Liuhe District, East Road, No. Patentee before: Lanshen Pump Group Co., Ltd., Nanjing |
|
| CX01 | Expiry of patent term |
Granted publication date: 20121107 |
|
| CX01 | Expiry of patent term |