CN104131942A - Multi-stage water turbine with super-low specific speed for industrial fluid high excessive pressure recovery - Google Patents
Multi-stage water turbine with super-low specific speed for industrial fluid high excessive pressure recovery Download PDFInfo
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- CN104131942A CN104131942A CN201410408215.7A CN201410408215A CN104131942A CN 104131942 A CN104131942 A CN 104131942A CN 201410408215 A CN201410408215 A CN 201410408215A CN 104131942 A CN104131942 A CN 104131942A
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The invention relates to a multi-stage water turbine with super-low specific speed for industrial fluid high excessive pressure recovery. The water turbine can effectively solve the problems that industrial fluid excessive pressure recovery efficiency is low and stability is poor. According to the technical scheme, a main shaft is vertically arranged in a machine shell through a bearing, the upper end of the main shaft extends out of the machine shell, the main shaft in the machine shell is sequentially provided with a primary hydraulic turbine stage and at least one secondary hydraulic turbine stage from top to bottom, the portion, above the primary hydraulic turbine stage, on the machine frame is provided with a water inlet pipe communicated with the water inlet end of the machine shell, a tail water pipe communicated with the water outlet of the machine shell is arranged on the portion, below the bottommost secondary hydraulic turbine stage, of the machine frame, the primary hydraulic turbine stage comprises a primary guide blade and a primary rotary wheel, the primary guide blade and the primary rotary wheel are arranged on the machine shaft side by side in the longitudinal direction, each secondary hydraulic turbine stage comprises a secondary guide blade and a secondary rotary wheel of the same structure as the primary rotary wheel, and each secondary guide blade and the corresponding secondary rotary wheel are arranged on the machine shaft side by side in the longitudinal direction. A water head of 100-200 m can be used, the water turbine can be directly connected with a power generator without a speed reducer, efficiency and reliability of the water turbine are improved, and recovery efficiency is high.
Description
Technical field
The present invention relates to industrial fluids hydraulic recovery field, particularly the high hydraulic recovery ultra-low specific speed of a kind of industrial fluids multi-stage water turbine.
Background technique
In decarburization, sulfur removal technology and the desalting process of oil, Chemical Manufacture, have a large amount of industrial overbottom pressure, be characterized in that overbottom pressure is high, scope is between 100m～1500m head, overbottom pressure energy is large, and the overbottom pressure energy of a set of chemical production line can reach hundreds of kilowatts to thousands of kilowatts.In the epoch of advocating energy-conservation, low-carbon (LC) and environmental protection, effectively reclaim industrial overbottom pressure and be the necessary act that reduces product energy consumption and carbon emission, the increase performance of enterprises.
Fluid hydraulic recovery generally uses hydraulic turbine (a kind of reaction turbine).Because industrial fluids overbottom pressure generally has, overbottom pressure is high, flow is little, and the hydraulic turbine reclaiming for this energy has again the restriction of rotating speed, must have ultra-low specific speed feature.The specific speed of the reaction turbine that existing hydroelectric power is used is higher, is not suitable for the high overbottom pressure condition of industrial fluids.China's existing fluid hydraulic recovery technology is mainly to adopt reversion water pump as hydraulic turbine at present, or the hydraulic recovery hydraulic turbine of developing based on pump design principle, mainly there are three problems in these technology, and the first is using reversion pump as operating turbine, its inefficiency, and poor stability.Its two be the hydraulic turbine of the Model Design exploitation based on pump in performance with the technical specifications of the high overbottom pressure utilization of industry and do not meet.It three is not carry out the design of the special hydraulic turbine of high overbottom pressure fluid according to ultra-low specific speed.Cause thus that hydraulic turbine size is large, progression is many, or its rotating speed is too high, does not mate with generator, need to adopts speed reducer and generator to connect.Therefore, its improvement and bring new ideas is imperative.
Summary of the invention
For above-mentioned situation, for overcoming the defect of prior art, the present invention's object is just to provide the high hydraulic recovery ultra-low specific speed of a kind of industrial fluids multi-stage water turbine, can effectively solve industrial fluids hydraulic recovery inefficiency, the problem of poor stability.
The technological scheme that the present invention solves is, comprise casing, runner and stator, in casing, through bearing, upper end is vertically housed and stretches out the main shaft on casing top, chopped-off head hydraulic turbine level and at least one secondary waterpower turbine stage are housed on the main shaft in casing from top to bottom successively, on the casing of chopped-off head hydraulic turbine level top, be provided with the intake pipe being connected with its feed-water end, the below of a secondary waterpower turbine stage of lowermost end is provided with the draft tube being connected with its waterexit end on casing, described chopped-off head hydraulic turbine level comprises, under be contained in side by side chopped-off head stator and the chopped-off head runner on main shaft, described secondary waterpower turbine stage comprises, under be contained in side by side the secondary stator and the secondary runner identical with chopped-off head rotaring wheel structure on main shaft, the runner inlet diameter D of chopped-off head runner and secondary runner
1with discharge diameter of runner D
2ratio is 1.5～2.0, runner inlet side height b1 and runner inlet diameter D1 ratio are 0.05～0.08, the specific speed of single-stage runner is 50～70m.kW, survey from industrial depressurized system high pressure the high-pressure liquid coming and enter chopped-off head stator by intake pipe, fluid forms after necessary circular rector in chopped-off head stator, flow into the acting of chopped-off head runner, fluid after acting is with the axially liquid outlet outflow from chopped-off head runner, continue to enter the first order of secondary waterpower turbine stage, first enter the secondary stator of the secondary waterpower turbine stage of the first order, described secondary stator is spatial guide blade, the fluid coming from upper level is axially to enter gate vane channel, in runner, change gradually direction, in stator outlet port with certain circular rector from radially flow out, fluid enters secondary runner acting after secondary stator forms necessary circular rector, fluid after acting is axially to continue to enter the next stage of secondary waterpower turbine stage, by that analogy, the fluid flowing out from the secondary runner of afterbody enters the low pressure pipeline of industrial fluids depressurized system through draft tube, the runners at different levels rotating mechanical energy producing that does work is exported by main shaft, the rotating speed of main shaft is 1500～3000r/min, match with the rotating speed of conventional three-phase synchronous AC generator, one end that main shaft stretches out casing can realize with generator without speed reducer direct connection, improved unit efficiency and reliability.
Novel structure uniqueness of the present invention, single-stage hydraulic turbine has higher fluid specific energy, the specific speed of single-stage runner, between 50～70m.kW, can utilize 100～200m head, realize with generator without speed reducer direct connection, unit efficiency and reliability are improved, reuse efficiency is high, safe and reliable, easy to use, effective, there are good society and economic benefit.
Brief description of the drawings
Fig. 1 is sectional front view of the present invention.
Fig. 2 is the sectional front view of the secondary waterpower of the present invention.
Fig. 3 is the plan view of the secondary stator of the present invention.
Fig. 4 is the plan view of chopped-off head runner of the present invention and secondary runner.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Provided by Fig. 1-4, the present invention includes casing, runner and stator, in casing, through bearing 8, the main shaft 5 that stretches out casing top in upper end is vertically housed, on main shaft 5 in casing, through bearing, chopped-off head hydraulic turbine level and at least one secondary waterpower turbine stage are housed successively from top to bottom, on the casing of chopped-off head hydraulic turbine level top, be provided with the intake pipe 9 being connected with its feed-water end, the below of a secondary waterpower turbine stage of lowermost end is provided with the draft tube 4 being connected with its waterexit end on casing, described chopped-off head hydraulic turbine level comprises, under be contained in side by side chopped-off head stator 1-1 and the chopped-off head runner 1-2 on main shaft, described secondary waterpower turbine stage comprises, under be contained in side by side the secondary stator 2-1 and the secondary runner 2-2 identical with chopped-off head runner 1-2 structure on main shaft, the runner inlet diameter D of chopped-off head runner 1-2 and secondary runner 2-2
1with discharge diameter of runner D
2ratio is 1.5～2.0, runner inlet side height b1 and runner inlet diameter D1 ratio are 0.05～0.08, the specific speed of single-stage runner is that the specific speed described in 50～70m.kW(is that head is 1m, the rotating speed of water turbine self when sending 1 power and mechanical efficiency and being 100%), survey from industrial depressurized system high pressure the high-pressure liquid coming and enter chopped-off head stator 1-1 by intake pipe 9, fluid forms after necessary circular rector in chopped-off head stator, flow into chopped-off head runner 1-2 acting, fluid after acting is with the axially liquid outlet outflow from chopped-off head runner, continue to enter the first order of secondary waterpower turbine stage, first enter the secondary stator of the secondary waterpower turbine stage of the first order, described secondary stator is spatial guide blade, the fluid coming from upper level is axially to enter gate vane channel, in runner, change gradually direction, in stator outlet port with certain circular rector from radially flow out, fluid enters secondary runner 2-2 acting after secondary stator forms necessary circular rector, fluid after acting is axially to continue to enter the next stage of secondary waterpower turbine stage, by that analogy, the fluid flowing out from the secondary runner of afterbody enters the low pressure pipeline of industrial fluids depressurized system through draft tube 4, the runners at different levels rotating mechanical energy producing that does work is exported by main shaft 5, the rotating speed of main shaft is 1500～3000r/min, match with the rotating speed of conventional three-phase synchronous AC generator, one end that main shaft stretches out casing can realize with generator without speed reducer direct connection, improved unit efficiency and reliability.
For ensureing using effect, described casing is that cross section is circular pot type runner, on pot type runner, be provided with the lug boss 2 of shaft section semicircular in shape at each secondary waterpower turbine stage place, make the shaft section of casing one side S-shaped, secondary stator 2-1 and secondary runner 2-2 are contained in the center of lug boss, form the level that works alone, can be formed easily the multi-stage water turbine of any number of stages by so multiple level series connection that work alone, realize recovery to the high overbottom pressure of different industries fluid, and compact structure, size are less.
Between described chopped-off head stator, secondary stator and main shaft, be provided with shaft sealing 6; Between described main shaft 5 and casing, be provided with main shaft seal 7; The liquid feeding end of described chopped-off head hydraulic turbine level is provided with tubular flume 1 in casing, and the fluid entering from intake pipe 9 levels is converted to and axially enters chopped-off head stator 1-1; One end that described main shaft 5 stretches out casing is connected with three-phase synchronous AC generator; Draft cone 3 is equipped with in described main shaft 5 lower ends.
The present invention uses through reality, and effect is very good, sees following test 1,2:
Test 1:
The high hydraulic recovery ultra-low specific speed of industrial fluids multi-stage water turbine is for certain chemical plant decarburization depressurized system, and decarbonizing liquid is allyl acetate, system for the overbottom pressure that electricity generating device provides be 3.0MPa, the flow providing is 880 m
3/ h (0.1m
3/ s).Adopt chopped-off head hydraulic turbine level and a secondary waterpower turbine stage to recycle overbottom pressure, the specific speed of single-stage hydraulic turbine is 65m.kW, and the overbottom pressure that single-stage runner utilizes is 1.5MPa.The runner nominal diameter D of hydraulic turbine
1for 0.36m, runner inlet height b
1=0.08D
1, discharge diameter of runner D
1=2D
2, water turbine rated speed is 1500r/min.The gross capability of multi-stage water power turbine is 590KW, and direct connection drives to exert oneself and generates electricity for 490kW three-phase synchronous alternator group.
Test 2:
The high hydraulic recovery ultra-low specific speed of industrial fluids multi-stage water turbine is for certain chemical plant desulphurization system.System for the overbottom pressure that electricity generating device provides be 14.0MPa, the flow providing is 380 m
3/ h (0.1m
3/ s), chopped-off head hydraulic turbine level and 6 secondary waterpower turbine stages are recycled overbottom pressure.The specific speed of single-stage hydraulic turbine is 55m.kW, and the overbottom pressure of utilization is 2.0MPa.The runner nominal diameter D of hydraulic turbine
1for 0.24m, runner inlet height b
1=0.065D
1, D
1=1.5D
2, rated speed is 3000r/min.The gross capability of multi-stage water power turbine is 875KW, and direct connection drives to exert oneself and generates electricity for 765kW three-phase synchronous alternator group.
Compared with prior art, the present invention has the following advantages:
1, the present invention adopts multi-stage water turbine to design according to ultra-low specific speed, makes single-stage hydraulic turbine have higher fluid specific energy, and the specific speed of single-stage runner, between 50～70m.kW, can utilize 100～200m head.Multi-stage water power turbine can be realized the recycling to high overbottom pressure in the situation that of less progression, simultaneously, its rotating speed remains between 1500～3000r/min, match with the rotating speed of conventional three-phase synchronous AC generator, can realize with generator without speed reducer direct connection, greatly improved unit efficiency and reliability;
2, the general arrangement that has adopted the structural type of similar deep-well pump to carry out multi-stage water turbine of the present invention, and adopt non-volute type equal section ring runner, spatial guide blade and francis turbine runner to form the level that works alone of water turbine, can be formed easily the multi-stage water turbine of any number of stages by so multiple level series connection that work alone, realize the recovery to the high overbottom pressure of different industries fluid, make the structure of multi-stage water turbine efficiently, succinctly, be easy to manufacture;
3, can be widely used in the occasion of the high hydraulic recovery of all kinds of fluids, drive generator generating, or drive pump working, reclaim the meaningless energy abandoning, have good society and economic benefit.
Claims (7)
1. the high hydraulic recovery ultra-low specific speed of an industrial fluids multi-stage water turbine, comprise casing, runner and stator, it is characterized in that, in casing, through bearing (8), the main shaft (5) that stretches out casing top in upper end is vertically housed, chopped-off head hydraulic turbine level and at least one secondary waterpower turbine stage are housed on the main shaft (5) in casing from top to bottom successively, on the casing of chopped-off head hydraulic turbine level top, be provided with the intake pipe (9) being connected with its feed-water end, the below of a secondary waterpower turbine stage of lowermost end is provided with the draft tube (4) being connected with its waterexit end on casing, described chopped-off head hydraulic turbine level comprises, under be contained in side by side chopped-off head stator (1-1) and the chopped-off head runner (1-2) on main shaft, described secondary waterpower turbine stage comprises, under be contained in side by side the secondary stator (2-1) and the secondary runner (2-2) identical with chopped-off head runner (1-2) structure on main shaft, the runner inlet diameter D of chopped-off head runner (1-2) and secondary runner (2-2)
1with discharge diameter of runner D
2ratio is 1.5～2.0, runner inlet side height b1 and runner inlet diameter D1 ratio are 0.05～0.08, the specific speed of single-stage runner is 50～70m.kW, survey from industrial depressurized system high pressure the high-pressure liquid coming and enter chopped-off head stator (1-1) by intake pipe (9), fluid forms after necessary circular rector in chopped-off head stator, flow into chopped-off head runner (1-2) acting, fluid after acting is with the axially liquid outlet outflow from chopped-off head runner, continue to enter the first order of secondary waterpower turbine stage, first enter the secondary stator of the secondary waterpower turbine stage of the first order, described secondary stator is spatial guide blade, the fluid coming from upper level is axially to enter gate vane channel, in runner, change gradually direction, in stator outlet port with certain circular rector from radially flow out, fluid enters secondary runner (2-2) acting after secondary stator forms necessary circular rector, fluid after acting is axially to continue to enter the next stage of secondary waterpower turbine stage, by that analogy, the fluid flowing out from the secondary runner of afterbody enters the low pressure pipeline of industrial fluids depressurized system through draft tube (4), the runners at different levels rotating mechanical energy producing that does work is exported by main shaft (5), the rotating speed of main shaft is 1500～3000r/min, match with the rotating speed of conventional three-phase synchronous AC generator, one end that main shaft stretches out casing can realize with generator without speed reducer direct connection, improved unit efficiency and reliability.
2. the high hydraulic recovery ultra-low specific speed of industrial fluids according to claim 1 multi-stage water turbine, it is characterized in that, described casing is that cross section is circular pot type runner, on pot type runner, be provided with the lug boss (2) of shaft section semicircular in shape at each secondary waterpower turbine stage place, secondary stator (2-1) and secondary runner (2-2) are contained in the center of lug boss, form the level that works alone, can be formed easily the multi-stage water turbine of any number of stages by so multiple level series connection that work alone, realize the recovery to the high overbottom pressure of different industries fluid, and compact structure, size is less.
3. the high hydraulic recovery ultra-low specific speed of industrial fluids according to claim 1 multi-stage water turbine, is provided with shaft sealing (6) between described chopped-off head stator, secondary stator and main shaft.
4. the high hydraulic recovery ultra-low specific speed of industrial fluids according to claim 1 multi-stage water turbine, is provided with main shaft seal (7) between described main shaft (5) and casing.
5. the high hydraulic recovery ultra-low specific speed of industrial fluids according to claim 1 multi-stage water turbine, the liquid feeding end of described chopped-off head hydraulic turbine level is provided with tubular flume (1) in casing, and the fluid entering from intake pipe (9) level is converted to and axially enters chopped-off head stator (1-1).
6. the high hydraulic recovery ultra-low specific speed of industrial fluids according to claim 1 multi-stage water turbine, one end that described main shaft (5) stretches out casing is connected with three-phase synchronous AC generator.
7. the high hydraulic recovery ultra-low specific speed of industrial fluids according to claim 1 multi-stage water turbine, draft cone (3) is equipped with in described main shaft (5) lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410408215.7A CN104131942A (en) | 2014-08-19 | 2014-08-19 | Multi-stage water turbine with super-low specific speed for industrial fluid high excessive pressure recovery |
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|---|---|---|---|
| CN201410408215.7A CN104131942A (en) | 2014-08-19 | 2014-08-19 | Multi-stage water turbine with super-low specific speed for industrial fluid high excessive pressure recovery |
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|---|---|---|---|
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106870243A (en) * | 2017-02-27 | 2017-06-20 | 江苏大学镇江流体工程装备技术研究院 | A kind of multi-state multistage turbine |
| CN108661844A (en) * | 2018-07-28 | 2018-10-16 | 华北水利水电大学 | A kind of hydraulic turbine runner with reducing front and back guide blade based on hydraulic turbine pattern |
| CN108798969A (en) * | 2018-07-28 | 2018-11-13 | 华北水利水电大学 | A kind of hydraulic turbine runner with flow channel type guide blade based on hydraulic turbine pattern |
| CN112610388A (en) * | 2020-12-22 | 2021-04-06 | 宋仔鹏 | Closed-loop transmission type energy-saving generator for hydraulic engineering |
| CN113464343A (en) * | 2021-06-01 | 2021-10-01 | 长江勘测规划设计研究有限责任公司 | Power generation method for high-water-head large-capacity vertical shaft series-connection type mixed-flow water turbine |
| CN114909245A (en) * | 2022-04-14 | 2022-08-16 | 武汉理工大学 | Waste water generator |
| CN114922810A (en) * | 2022-04-22 | 2022-08-19 | 浙江理工大学 | Modularized shaftless pump and quick replacement and operation and maintenance method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106870243A (en) * | 2017-02-27 | 2017-06-20 | 江苏大学镇江流体工程装备技术研究院 | A kind of multi-state multistage turbine |
| CN108661844A (en) * | 2018-07-28 | 2018-10-16 | 华北水利水电大学 | A kind of hydraulic turbine runner with reducing front and back guide blade based on hydraulic turbine pattern |
| CN108798969A (en) * | 2018-07-28 | 2018-11-13 | 华北水利水电大学 | A kind of hydraulic turbine runner with flow channel type guide blade based on hydraulic turbine pattern |
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| CN112610388A (en) * | 2020-12-22 | 2021-04-06 | 宋仔鹏 | Closed-loop transmission type energy-saving generator for hydraulic engineering |
| CN113464343A (en) * | 2021-06-01 | 2021-10-01 | 长江勘测规划设计研究有限责任公司 | Power generation method for high-water-head large-capacity vertical shaft series-connection type mixed-flow water turbine |
| CN114909245A (en) * | 2022-04-14 | 2022-08-16 | 武汉理工大学 | Waste water generator |
| CN114922810A (en) * | 2022-04-22 | 2022-08-19 | 浙江理工大学 | Modularized shaftless pump and quick replacement and operation and maintenance method |
| CN114922810B (en) * | 2022-04-22 | 2024-03-22 | 浙江理工大学 | Modularized shaftless pump and quick replacement and operation and maintenance method |
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Application publication date: 20141105 |