CN205559372U - Centrifugal pump inlet pressure is from balancing unit - Google Patents
Centrifugal pump inlet pressure is from balancing unit Download PDFInfo
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- CN205559372U CN205559372U CN201620268578.XU CN201620268578U CN205559372U CN 205559372 U CN205559372 U CN 205559372U CN 201620268578 U CN201620268578 U CN 201620268578U CN 205559372 U CN205559372 U CN 205559372U
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- centrifugal pump
- impeller
- rotating ring
- balancing device
- pressure auto
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Abstract
The utility model discloses a centrifugal pump inlet pressure is from balancing unit, it is the device of attachhing of centrifugal pump. Pressure includes rotating ring, quiet ring, base, spring and nut from balancing unit. Rotating ring axial embedding impeller intake side wheel hub department, main aspects face outer rotating ring along with impeller circumvolution. The shaft part cartridge of base to the axially extending bore at pump body import middle part in and with nut locking, shock mount in the other end axle sleeve blind hole, the quiet ring of stopper dress receives bullet spring shaft to the promotion in the hole, to constitute the big terminal surface of quiet ring vice with the friction of rotating ring main aspects facial features contact from this. Pressure between the import of impeller and the pump body plays and eliminates the effect that two side area in the impeller are poor from balancing unit, realizes easily that the pump rotor does not have the axial force and exerts, is favorable to steady, low noise operation, and the operating mode of pump rotor self -contained bearing is improved to advantage, improves the life of supporting centrifugal pump. The utility model discloses the scuba that is fit for 2000 meters dive limit degree of depth is supporting.
Description
Technical field
This utility model relates to a kind of hydraulic structure design, and specifically, this utility model relates to the structure design of a kind of centrifugal pump auxiliary equipment, particularly a kind of centrifugal pump inlet pressure auto-balancing device.
Background technology
Submersible dive or the control of floating, generally realize by centrifugal pump regulation ballast tank pondage.When centrifugal pump continues toward injecting sea water in ballast tank so that submersible increase payload and dive.Otherwise, the sea water stored in ballast tank the most outwards drained by centrifugal pump, and submersible reduces along with load capacity and gradually floats.The centrifugal pump inlet supporting because of submersible ballast tank leads directly to sea, and along with submersible submerged depth increases, the pressure born at centrifugal pump inlet increases therewith, and the level pressure of formation directly acts on pump rotor.In structure, pump rotor is the most consistent with Impact direction, and the axial thrust acted on pump rotor is all undertaken by bearing.Extremely limited from structure rolling bearing anti-axial force ability, it is impossible to long-term operation under high load working condition, less allow overload operation, the bearing that otherwise pump rotor is supporting is fragile.Submersible is the most manned device, and corollary equipment safety is had higher requirement, the problem that the centrifugal pump of prior art is poor because there is pump rotor anti-axial thrust ability, it is impossible to enough meet the safety of submersible deep diving operation.
Utility model content
This utility model is poor mainly for the anti-axial thrust of centrifugal pump rotor axle of prior art, be not suitable for the problem that deep diving submersible is supporting, a kind of centrifugal pump inlet pressure auto-balancing device is proposed, this apparatus structure is the compactest, position is reasonable, can autobalance pump inlet pressure, it is ensured that armature spindle rotates freely, thus promotes the safety of submersible deep ocean work.
This utility model is achieved through the following technical solutions technical goal.
Centrifugal pump inlet pressure auto-balancing device, it is the accessory device of centrifugal pump.Supporting centrifugal pump is vertical pump, and the pump housing import of horizontal down, is provided with, in the middle part of this import inner chamber, the axially extending bore collectively constituted by alternate diametral rib, and the axially extending bore coaxial with impeller is used for installing pressure auto-balancing device.It thes improvement is that: the pressure auto-balancing device between impeller and pump housing import includes rotating ring, stationary ring, pedestal, spring and nut.Described rotating ring axially embeds impeller inlet side wheel hub, and large end face rotating ring outwardly is with impeller coaxial rotating.Described pedestal one end is provided with overhanging shaft part, and the other end is provided with coaxial blind hole shaft sleeve, and the shaft part of pedestal is inserted in the axially extending bore in the middle part of pump housing import and uses nut check.The other end is cantilever-shaped blind hole shaft sleeve built-in spring, and in aperture, the stationary ring of plug dress is axially promoted by spring, thus constitutes the friction pair that stationary ring large end face contacts with rotating ring large end face.
As further improvement project: the rotating ring big end external diameter of described pressure auto-balancing device and the external diameter of pedestal are equal, and this outside dimension is equal to wheel backface hub outside diameter.
It is inorganic non-metallic goods as further improvement project, rotating ring and stationary ring.
It is ceramic as further improvement project, rotating ring and stationary ring.
As further improvement project, described spring is cylindrical compression spring.
This utility model compared with prior art, has the positive effect that:
1, the pressure auto-balancing device simple in construction of spring swelling, makes easily；
2, pressure auto-balancing device sucks between wheel hub between pump housing import and impeller, its volume is utilized to eliminate the difference in areas of prior art centrifugal pump supporting impeller both ends of the surface, guarantee not produce when pump rotor operates axial force, it is substantially improved the operation matter state of self-contained bearing, thus strengthening the safety of submersible deep diving operation, its limit diving depth has reached 2000 meters.
Accompanying drawing explanation
Fig. 1 is the structural profile schematic diagram that this utility model is in installation site.
Fig. 2 is structure enlarged diagram at I in Fig. 1, shows the structure of pressure auto-balancing device in figure.
Detailed description of the invention
Below according to accompanying drawing and in conjunction with the embodiments, the utility model is described in further detail.
Centrifugal pump inlet pressure auto-balancing device shown in Fig. 1, it is the accessory device of the supporting centrifugal pump of certain submersible 1.Described centrifugal pump 1 is vertical water pump, and the present embodiment selects 80CLHG-40T vertical water pump.The pump housing 1.2 horizontal of vertical structure centrifugal pump, sea is led directly in pump inlet down.This utility model is provided with the axially extending bore collectively constituted by alternate diametral rib in the middle part of the import inner chamber of the pump housing 1.2, and the axially extending bore coaxial with impeller 1.1 is used for location and installation pressure auto-balancing device 2.Described pressure auto-balancing device 2 installation site is between impeller 1.1 and the pump housing 1.2 import, and it includes rotating ring 2.1, stationary ring 2.2, pedestal 2.3, spring 2.4 and nut 2.5.Described rotating ring 2.1 axially embeds impeller 1.1 inlet side wheel hub, and large end face rotating ring 2.1 outwardly is with impeller 1.1 coaxial rotating.Described pedestal 2.3 one end is provided with overhanging shaft part, and the other end is provided with coaxial blind hole shaft sleeve, and the shaft part of pedestal 2.3 is inserted to lock in the axially extending bore in the middle part of the pump housing 1.2 import and with nut 2.5.The other end is cantilever-shaped blind hole shaft sleeve built-in spring 2.4, and the spring 2.4 in the present embodiment application is cylindrical compression spring.Stationary ring 2.2 at blind hole shaft sleeve orifice plug dress is axially promoted by spring 2.4, thus constitutes the friction pair that stationary ring 2.2 large end face contacts with rotating ring 2.1 large end face.Because the working media of centrifugal pump 1 is sea water, in order to improve wearability and the corrosion resistance of friction pair, rotating ring 2.1 and stationary ring 2.2 material in the present embodiment are pottery.Above-mentioned pressure self-balancing is between the pump housing 1.2 import and impeller 1.1 suction inlet wheel hub, this entity occupies certain locus naturally, the external diameter of design pressure self balancing device targetedly, the difference in areas of centrifugal pump 1 supporting impeller 1.1 both ends of the surface eliminating prior art that are easy to do to, the most just can accomplish impeller 1.1 two sides stress balance, do not produce axial force, it is ensured that pump rotor runs well.In the present embodiment, impeller 1.1 back side hub outside diameter is 60mm, therefore the rotating ring 2.1 of pressure auto-balancing device holds greatly external diameter and pedestal 2.3 external diameter equal, and this outside dimension is equal to impeller 1.1 back side hub outside diameter.In prior art centrifugal pump 1 after supporting this utility model, although impeller 1.1 pressure-bearing increases along with submersible submerged depth and strengthens, accomplish impeller 1.1 two sides area equation because of structure, therefore stress balance.Because without responsive to axial force, operating nature is steady, and noise is low, and largest benefit is to improve the operating mode of pump rotor self-contained bearing, is conducive to improving the service life of supporting centrifugal pump 1 when pump rotor rotates.
Claims (5)
1. a centrifugal pump inlet pressure auto-balancing device, it is the accessory device of centrifugal pump (1)；Supporting centrifugal pump (1) is vertical pump, and the pump housing (1.2) import of horizontal down, is provided with, in the middle part of this import inner chamber, the axially extending bore collectively constituted by alternate diametral rib, and the axially extending bore coaxial with impeller (1.1) is used for installing pressure auto-balancing device (2)；It is characterized in that: the pressure auto-balancing device (2) between impeller (1.1) and the pump housing (1.2) import includes rotating ring (2.1), stationary ring (2.2), pedestal (2.3), spring (2.4) and nut (2.5)；Described rotating ring (2.1) axially embeds impeller (1.1) inlet side wheel hub, and large end face rotating ring (2.1) outwardly is with impeller (1.1) coaxial rotating；Described pedestal (2.3) one end is provided with overhanging shaft part, and the other end is provided with coaxial blind hole shaft sleeve, and the shaft part of pedestal (2.3) is inserted in the axially extending bore in the middle part of the pump housing (1.2) import and locks with nut (2.5)；The other end is cantilever-shaped blind hole shaft sleeve built-in spring (2.4), and in aperture, the stationary ring (2.2) of plug dress is axially promoted by spring (2.4), thus constitutes the friction pair that stationary ring (2.2) large end face contacts with rotating ring (2.1) large end face.
Centrifugal pump inlet pressure auto-balancing device the most according to claim 1, it is characterized in that: the external diameter of the rotating ring (2.1) of described pressure auto-balancing device (2) end external diameter and pedestal (2.3) greatly is equal, and this outside dimension is equal to impeller (1.1) back side hub outside diameter.
Centrifugal pump inlet pressure auto-balancing device the most according to claim 1, it is characterised in that: described rotating ring (2.1) and stationary ring (2.2) are inorganic non-metallic goods.
Centrifugal pump inlet pressure auto-balancing device the most according to claim 1, it is characterised in that: described rotating ring (2.1) and stationary ring (2.2) they are ceramic.
Centrifugal pump inlet pressure auto-balancing device the most according to claim 1, it is characterised in that: described spring (2.4) is cylindrical compression spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620268578.XU CN205559372U (en) | 2016-04-05 | 2016-04-05 | Centrifugal pump inlet pressure is from balancing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620268578.XU CN205559372U (en) | 2016-04-05 | 2016-04-05 | Centrifugal pump inlet pressure is from balancing unit |
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| CN205559372U true CN205559372U (en) | 2016-09-07 |
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| CN201620268578.XU Active CN205559372U (en) | 2016-04-05 | 2016-04-05 | Centrifugal pump inlet pressure is from balancing unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736479A (en) * | 2016-04-05 | 2016-07-06 | 江苏振华泵业制造有限公司 | Pressure self-balance device for inlet of centrifugal pump |
| CN106321511A (en) * | 2016-09-20 | 2017-01-11 | 南京华顺精密模具有限公司 | Turbofan of turbine and manufacturing method thereof |
| CN109139494A (en) * | 2018-11-14 | 2019-01-04 | 南京腾图节能科技有限公司 | A kind of New type water pump |
-
2016
- 2016-04-05 CN CN201620268578.XU patent/CN205559372U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736479A (en) * | 2016-04-05 | 2016-07-06 | 江苏振华泵业制造有限公司 | Pressure self-balance device for inlet of centrifugal pump |
| CN106321511A (en) * | 2016-09-20 | 2017-01-11 | 南京华顺精密模具有限公司 | Turbofan of turbine and manufacturing method thereof |
| CN109139494A (en) * | 2018-11-14 | 2019-01-04 | 南京腾图节能科技有限公司 | A kind of New type water pump |
| CN109139494B (en) * | 2018-11-14 | 2024-01-19 | 南京腾图节能科技有限公司 | Novel water pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 225500 Jiangyan Avenue No. 9, Jiangyan District, Taizhou City, Jiangsu Province (Jiangsu Zhenhua Pump Manufacturing Co., Ltd.) Patentee after: Jiangsu Zhenhua Pump Industry Manufacturing Co., Ltd. Address before: 225500 Jiangyan Avenue No. 9, Jiangyan District, Taizhou City, Jiangsu Province (Jiangsu Zhenhua Pump Manufacturing Co., Ltd.) Patentee before: Jiangsu Zhenhua pump Limited by Share Ltd |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No.9 Jiangyan Avenue, Jiangyan Economic Development Zone, Taizhou City, Jiangsu Province (Jiangsu Zhenhua Haike Equipment Technology Co., Ltd.) Patentee after: Jiangsu Zhenhua Haike Equipment Technology Co., Ltd Address before: 225500 Jiangsu Zhenhua Pump Manufacturing Co., Ltd., Jiangyan Road, Jiangyan District, Jiangsu, Taizhou 9 Patentee before: JIANGSU ZHENHUA PUMP MANUFACTURING Co.,Ltd. |