CN113153828A - Axial force self-balancing device for seawater desalination energy recovery all-in-one machine - Google Patents
Axial force self-balancing device for seawater desalination energy recovery all-in-one machine Download PDFInfo
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- CN113153828A CN113153828A CN202110401177.2A CN202110401177A CN113153828A CN 113153828 A CN113153828 A CN 113153828A CN 202110401177 A CN202110401177 A CN 202110401177A CN 113153828 A CN113153828 A CN 113153828A
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- Prior art keywords
- turbine
- pump
- shell
- impeller
- machine
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- 238000010612 desalination reaction Methods 0.000 title claims abstract description 19
- 239000013535 sea water Substances 0.000 title claims abstract description 19
- 238000011084 recovery Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 4
- 230000007774 longterm Effects 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/041—Axial thrust balancing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/06—Pressure conditions
- C02F2301/066—Overpressure, high pressure
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to a self-balancing device for axial force of a seawater desalination energy recovery all-in-one machine, which comprises a shell (11) and a shaft (10) positioned in the shell (11), wherein one end of the shell (11) is hermetically connected with a turbine end cover (1), the other end of the shell is hermetically connected with a pump volute (7), one end of the shaft (10) is provided with a turbine impeller (3), the other end of the shaft is provided with a pump impeller (6), the turbine impeller (3) is positioned in a turbine volute chamber core (4), the pump impeller (6) is positioned in a pump volute chamber core (9), the turbine volute chamber core (4) and the pump volute chamber core (9) are communicated through a drainage pipeline (5), and the drainage pipeline (5) is opposite to a front cavity of the turbine impeller (3) in the turbine volute chamber core (4). The invention solves the problem that the rotor of the seawater desalination energy recovery all-in-one machine is easy to be blocked, and can effectively ensure the long-term safe and stable operation of the all-in-one machine.
Description
Technical Field
The invention relates to the field of reverse osmosis seawater desalination energy recovery devices, in particular to an axial force balancing device of a seawater desalination energy recovery all-in-one machine.
Background
The seawater desalination energy recovery all-in-one machine is core equipment in a reverse osmosis seawater desalination system. The operation rotating speed of the rotor of the all-in-one machine is up to about 20000r/min, if the pressure in the high-pressure pump is too high, the rotor can be extruded to axially move towards the turbine end, so that the turbine and the reasoning disk are extruded, and the problems of heating, blocking and the like of the rotor of the all-in-one machine are further caused.
Disclosure of Invention
The invention aims to provide an axial force balancing device of a seawater desalination energy recovery all-in-one machine, which can stably balance the axial force of the seawater desalination energy recovery all-in-one machine, reduce the abrasion probability of a turbine impeller and a thrust disc, ensure the stable work of a rotor component and prolong the service life of the seawater desalination energy recovery all-in-one machine.
In order to realize the purpose, the invention adopts the technical scheme that: a self-balancing device for an axial force of a seawater desalination energy recovery all-in-one machine comprises a shell and a shaft positioned in the shell, wherein one end of the shell is connected with a turbine end cover in a sealing mode, the other end of the shell is connected with a pump volute in a sealing mode, a turbine impeller is installed at one end of the shaft, a pump impeller is installed at the other end of the shaft, the turbine impeller is positioned in a turbine volute chamber core, the pump impeller is positioned in the pump volute chamber core, the turbine volute chamber core and the pump volute chamber core are communicated through a drainage pipeline, and the drainage pipeline is positioned in the turbine volute chamber core and faces a front cavity of the turbine impeller.
In the above scheme, a thrust disc is arranged between the turbine end cover and the turbine impeller, and the flow guide pipeline passes through the thrust disc, the casing and the pump volute once to communicate the turbine volute core and the pump volute core.
In the scheme, the drainage pipeline is provided with a gate valve or a ball valve for adjusting the flow of high-pressure water in the drainage pipeline.
In the above solution, the shaft is mounted in a sliding bearing.
In the above scheme, through holes are arranged in the thrust disc, the shell and the pump volute, and the drainage pipeline is respectively arranged in the through holes in the thrust disc, the shell and the pump volute.
The invention has the beneficial effects that: (1) the drainage pipeline discharges part of pressure water in the pump, the pressure water sequentially passes through the hole in the volute cavity, the drainage pipeline, the turbine end cover and the through hole of the thrust disc, enters the turbine cavity, reversely impacts the turbine impeller, reduces the abrasion probability of the turbine impeller and the thrust disc, ensures long-term high-efficiency operation of the water pump, and obviously prolongs the service life of the water pump; (2) the external pipeline is provided with a gate valve, when the gate valve is opened, high-pressure water in the pump volute can pass through the external pipeline and sequentially enter the turbine impeller cavity through the integrated machine shell, the turbine end cover and the thrust disc, the turbine impeller is impacted reversely, and the high-pressure water flow in the drainage pipeline can be adjusted by adjusting the gate valve or the ball valve according to the size of the axial force.
Drawings
Fig. 1 is a schematic structural view of an axial force balancing apparatus according to the present invention.
Figure 2 is a force diagram of the impeller of the present invention.
Fig. 3 is a schematic view of a self-balancing device of the present invention.
FIG. 4 is a block diagram of the inlet of the turbine end pipe.
In the figure: 1. the turbine comprises a turbine end cover, a thrust disc, a turbine impeller, a turbine volute chamber core, a flow guide pipeline, a pump impeller, a pump volute, a pump end cover, a pump volute chamber core, a shaft, a shell and a sliding bearing, wherein the thrust disc is 2, the turbine impeller is 3, the turbine volute chamber core is 4, the flow guide pipeline is 5, the pump impeller is 6, the pump volute chamber core is 7, the pump end cover is 8, the pump volute chamber core is 9, the shaft is 10, the shell is 11, and the sliding bearing is 12.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. In the present specification, the terms "upper", "lower", "left", "right", "middle" and "one" are used for clarity of description, and are not used to limit the scope of the present invention, and the relative relationship between the terms and the modifications may be regarded as the scope of the present invention without substantial technical changes. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The axial force balancing device of the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, 3 and 4, the axial force balancing device for the seawater desalination energy recovery all-in-one machine in the invention comprises a turbine end cover 1, a thrust disc 2, a turbine impeller 3, a turbine volute core 4, a drainage pipeline 5, a pump impeller 6, a pump volute 7, a pump end cover 8, a pump volute core 9, a shaft 10, a housing 11 and a sliding bearing 12. The thrust disc 2 is fixed in the turbine end cover; the turbine impeller 3 and the pump impeller 6 are respectively fixed at two ends of a shaft 10 and are respectively arranged in the turbine volute core 4 and the pump volute core 9; the sliding bearing is fixed on the shaft 10; a through hole is drilled at the upper ends of the integrated machine shell 11, the turbine end cover 1, the thrust disc 2 and the pump volute 7 and is communicated with the turbine volute chamber core 4, and the two through holes are connected through a drainage pipeline 5.
A design method of an axial force balancing device for a seawater desalination energy recovery all-in-one machine is characterized by comprising the following steps: the design method comprises the following steps:
when the turbine is started, the turbine outlet is in a pressure building state before the pressure of the turbine outlet is formed, or the rotor just starts to rotate and the rotating speed is low; at this time, the pressure difference between the inlet and the outlet of the impeller is not formed, and if P is the pressure difference1＝P20; and at the moment, the mass flow rate G and the flow velocity G of the working medium00, negligible in calculation; at start-up, the impeller axial force may be calculated by:
Faxial_staryup＝PexpBLADE-PcavSHROUD
wherein the pressure PcavSHROUD，PexpBLADECan be calculated from the following formula:
wherein D1Is the outer diameter mm, D of the bearing lantern ring2Is the diameter mm, D of the outlet of the impeller3Is the diameter mm of the inlet of the impeller.
The following describes a specific working principle of the balancing device of the present invention for counteracting axial forces. When the device is started, high-pressure water is formed in the pump volute core, so that the bearing of the integrated machine is subjected to leftward thrust in figure 2. At the moment, high-pressure water is introduced into the turbine volute chamber core through the drainage pipeline in the volute and reversely impacts the turbine impeller, so that the bearing of the all-in-one machine is subjected to rightward thrust, and the pressure in the pump volute chamber core can be reduced, and further the axial force is balanced.
The above description is only for the specific implementation of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Under the same using environment regulation, the product is compared with the data of the international advanced level as follows:
by comparison, various performances of the product reach the international advanced level.
Claims (5)
1. The self-balancing device for the axial force of the seawater desalination energy recovery all-in-one machine comprises a shell (11) and a shaft (10) located in the shell (11), and is characterized in that one end of the shell (11) is connected with a turbine end cover (1) in a sealing mode, the other end of the shell is connected with a pump volute (7) in a sealing mode, a turbine impeller (3) is installed at one end of the shaft (10), a pump impeller (6) is installed at the other end of the shaft, the turbine impeller (3) is located in a turbine volute chamber core (4), the pump impeller (6) is located in a pump volute chamber core (9), the turbine volute chamber core (4) is communicated with the pump volute chamber core (9) through a drainage pipeline (5), and the drainage pipeline (5) is located in the turbine volute chamber core (4) and faces a front cavity of the turbine impeller (3).
2. The self-balancing device for the axial force of the seawater desalination energy recovery all-in-one machine is characterized in that a thrust disc (2) is arranged between the turbine end cover (1) and the turbine impeller (3), and the drainage pipeline (5) passes through the thrust disc (2), the shell (11) and the pump volute (7) at a time to communicate the turbine volute core (4) and the pump volute core (9).
3. The self-balancing device for the integrated seawater desalination energy recovery machine with axial force as claimed in claim 1 or 2, wherein the drainage pipeline (5) is equipped with a gate valve or a ball valve for adjusting the flow rate of the high-pressure water in the drainage pipeline (5).
4. The self-balancing device for integrated seawater desalination energy recovery machine axial force according to claim 1 or 2, characterized in that the shaft (10) is mounted in a sliding bearing (12).
5. The self-balancing device for the axial force of the seawater desalination energy recovery all-in-one machine is characterized in that through holes are formed in the thrust disc (2), the shell (11) and the pump volute (7), and the drainage pipeline (5) is respectively installed in the through holes in the thrust disc (2), the shell (11) and the pump volute (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110401177.2A CN113153828A (en) | 2021-04-14 | 2021-04-14 | Axial force self-balancing device for seawater desalination energy recovery all-in-one machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110401177.2A CN113153828A (en) | 2021-04-14 | 2021-04-14 | Axial force self-balancing device for seawater desalination energy recovery all-in-one machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113153828A true CN113153828A (en) | 2021-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110401177.2A Pending CN113153828A (en) | 2021-04-14 | 2021-04-14 | Axial force self-balancing device for seawater desalination energy recovery all-in-one machine |
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| CN (1) | CN113153828A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62261695A (en) * | 1986-05-07 | 1987-11-13 | Teikoku Denki Seisakusho:Kk | Axial thrust balancing apparatus for multistage pump |
| US5049045A (en) * | 1988-02-26 | 1991-09-17 | Oklejas Robert A | Power recovery turbine pump |
| CN101644269A (en) * | 2009-07-16 | 2010-02-10 | 浙江大学 | High pressure centrifugal pump for desalinizing sea water |
| CN205064346U (en) * | 2015-11-02 | 2016-03-02 | 中国大唐集团科学技术研究院有限公司华中分公司 | Device that restraines water -feeding pump thrust bearing nonworking face scaling loss |
| CN107725254A (en) * | 2017-11-09 | 2018-02-23 | 合肥华升泵阀股份有限公司 | A kind of hydraulic turbine integral type axial force self-balancing rotor assembly |
| CN109611259A (en) * | 2018-11-13 | 2019-04-12 | 江苏大学 | A kind of sea water desalination pump and turbine all-in-one machine modular unit |
| CN110043324A (en) * | 2019-03-25 | 2019-07-23 | 华电电力科学研究院有限公司 | A kind of axial thrust balancing devices and design method for single-stage radial turbines expanding machine |
| CN211314565U (en) * | 2019-07-24 | 2020-08-21 | 江苏法尔机械制造有限公司 | High-pressure pump hydraulic turbine all-in-one machine |
-
2021
- 2021-04-14 CN CN202110401177.2A patent/CN113153828A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62261695A (en) * | 1986-05-07 | 1987-11-13 | Teikoku Denki Seisakusho:Kk | Axial thrust balancing apparatus for multistage pump |
| US5049045A (en) * | 1988-02-26 | 1991-09-17 | Oklejas Robert A | Power recovery turbine pump |
| CN101644269A (en) * | 2009-07-16 | 2010-02-10 | 浙江大学 | High pressure centrifugal pump for desalinizing sea water |
| CN205064346U (en) * | 2015-11-02 | 2016-03-02 | 中国大唐集团科学技术研究院有限公司华中分公司 | Device that restraines water -feeding pump thrust bearing nonworking face scaling loss |
| CN107725254A (en) * | 2017-11-09 | 2018-02-23 | 合肥华升泵阀股份有限公司 | A kind of hydraulic turbine integral type axial force self-balancing rotor assembly |
| CN109611259A (en) * | 2018-11-13 | 2019-04-12 | 江苏大学 | A kind of sea water desalination pump and turbine all-in-one machine modular unit |
| CN110043324A (en) * | 2019-03-25 | 2019-07-23 | 华电电力科学研究院有限公司 | A kind of axial thrust balancing devices and design method for single-stage radial turbines expanding machine |
| CN211314565U (en) * | 2019-07-24 | 2020-08-21 | 江苏法尔机械制造有限公司 | High-pressure pump hydraulic turbine all-in-one machine |
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Application publication date: 20210723 |
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| RJ01 | Rejection of invention patent application after publication |