CN106638534B - A kind of Waterpower type ship elevator valve system optimum design method having resistance to shock - Google Patents
A kind of Waterpower type ship elevator valve system optimum design method having resistance to shock Download PDFInfo
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- CN106638534B CN106638534B CN201611218468.3A CN201611218468A CN106638534B CN 106638534 B CN106638534 B CN 106638534B CN 201611218468 A CN201611218468 A CN 201611218468A CN 106638534 B CN106638534 B CN 106638534B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02C—SHIP-LIFTING DEVICES OR MECHANISMS
- E02C5/00—Mechanisms for lifting ships vertically
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Abstract
The present invention relates to a kind of Waterpower type ship elevator valve system optimum design methods having resistance to shock, in order to reduce the vibration that Waterpower type ship elevator water-delivery valve system occurs under the conditions of high water head, the means that the present invention is combined by " pipeline build after space layout pattern+transformation valve of three valves of optimization ", three valves that identical elevation is arranged in juxtaposition will be located at originally becomes space triangle disposition arrangement, converge section with manifold after the antivibration body replacing valve with " cylinder " shape simultaneously, low pressure whirlpool area after elimination valve, reduce fluctuation pressure, reduce flow velocity, to achieve the purpose that antivibration.The antivibration body overflow section of optimization design of the present invention is circle, avoids the problem of stress concentration of square structure apex angle, and convenient for design and construction.It is verified by model test, the present invention can effectively reduce the fluctuation pressure of flow and the vibration amplitude of pipeline side wall after valve, simplify manifold build after valve, ensured the safe operation of Waterpower type ship elevator water-carriage system valve.
Description
Technical field
The present invention relates to a kind of Waterpower type ship elevator valve system optimum design methods having resistance to shock, specifically
It is a kind of valve system being applied to Waterpower type ship elevator " master two is auxiliary ", reduces what it was vibrated under the conditions of high water head
Valve preferred arrangement pattern and pipeline build remodeling method.
Background technology
Waterpower type ship elevator using water-delivery valve control ship compartment the speed of service, water-delivery valve include a discharge coefficient compared with
Big main valve and the smaller auxiliary valve of two discharge coefficients, main valve are used to improve the speed of service in ship compartment, auxiliary valve for controlling ship compartment
Accurate docking, three valves are arranged in juxtaposition, and main valve is located at centre, and auxiliary valve is located at main valve both sides, front and back to be converged using breeches pipe
It is bonded to water-main road, sees Fig. 1.
Since the head that Waterpower type ship elevator valve system is born is very big, valve system vibrates during engineering operation
Acutely, ship lift safe operation is seriously affected.
Find there is following vibration source after carrying out model investigation to it：
1）Three bursts of flows of the three water-delivery valves output being arranged in juxtaposition are influenced obviously, in manifold to converge by valve back elbow
Place forms " strip low pressure swirling water current ", and flow tip converges area's reciprocating swing in breeches pipe, and fluidised form is extremely unstable." strip low pressure
Swirling water current " is to cause valve segment pipe low-frequency vibration main cause.
2）Under high water head effect, at runtime, pipeline wall pressure fluctuations are violent after valve for main valve, auxiliary valve.
3）The cavitation of the valve area that crumbles and fall is attached at valve back vent inside pipe wall, causes valve and pipe vibration to aggravate, is to cause valve
Gate segment pipeline high-frequency vibration main cause.
Therefore, it to solve the problems, such as valve vibration, manifold build after valve arrangement pattern and valve must be optimized and be changed
It makes, eliminates the influence of " strip low pressure swirling water current ", reduce the fluctuation pressure of inner wall of the pipe after valve, and improve cavitation number, make pipe
Road side wall crumbles and fall area far from cavitation.
Invention content
The technical problem to be solved by the present invention is to：For play of Waterpower type ship elevator valve system under the conditions of high water head
Strong oscillation phenomenon proposes a kind of valve arrangement pattern of optimization and the method for pipeline modification, reduces Waterpower type ship elevator valve system
System vibration amplitude, ensures Waterpower type ship elevator water-delivery valve system safety operation.
The present invention specifically adopts the following technical scheme that：
A kind of Waterpower type ship elevator valve system optimum design method having resistance to shock, it is characterised in that：By waterpower
Three valves of formula ship lift water-carriage system are arranged in space triangle disposition solid, while connecting one in the exit of three valves
Manifold after a shared former valve of antivibration body substitution, the area of passage of antivibration body are more than the total sectional area of three valves, antivibration body
One end connects the outlet of three valves, and the other end is directly connected to downstream technology main pipeline, provides buffering area for flow after valve, change
Kind fluidised form reduces the fluctuation pressure after former valve, reduces valve system vibration amplitude.
The present invention also provides a kind of Waterpower type ship elevator valve systems having resistance to shock, include the valve of interconnection
Preceding Y-pipe and three valves, it is characterised in that further include an antivibration body, three valves are three-dimensional in space triangle disposition
Arrangement, antivibration body one end connect the outlet of three valves, and the other end is directly connected to downstream technology main pipeline, antivibration body
Area of passage is more than the total sectional area of three valves.
Advantages of the present invention is：
1）Three valves change former flow field structure in the layout pattern of space triangle disposition, while antivibration body is flow after valve
Larger buffering area is provided, fluidised form significantly improves after making valve, eliminates " strip low pressure swirling water current " and its caused low frequency
Vibration.
2）Three valves are relatively arranged in juxtaposition the vibration damping for more adapting to " circle " section in space triangle disposition layout pattern with elevation
Body.
3）Manifold is replaced using the larger antivibration body of area of passage, arteries and veins of the flow to former breeches pipe inner wall can be greatly lowered
Dynamic pressure amplitude.
4）Antivibration body side wall is detached from bubble collapse area, and cavitation is made to occur inside water body, and valve and pipeline occur cavitation corrosion and break
Probability that is bad and inducing high-frequency vibration reduces.
5）Antivibration physical efficiency reduces flow velocity, the anti-cavitation performance of water-delivery valve system entirety is improved, especially in the big aperture of valve
When, it is substantially reduced using antivibration body late gate critical cavitation number, shows that anti-cavitation ability is stronger.
6）Antivibration body overflow section product is that the design scheme of " circle " avoids the stress that square-section is generated in vertex
It concentrates, is more advantageous to the structural stability of antidetonation body.
7）Valve system layout pattern and the resistance coefficient and discharge coefficient of former Y-pipe build after optimization is almost the same,
Do not influence conveyance capacity.
Description of the drawings
Fig. 1 is former Waterpower type ship elevator " master two is auxiliary " valve and front and back breeches pipe layout pattern；
Fig. 2 is the Waterpower type ship elevator valve system layout pattern of optimization design of the present invention；
Fig. 3 is one identical operating mode of embodiment, two kinds of build vibration amplitude comparison diagrams；
Fig. 4 is one identical operating mode of embodiment, two kinds of build fluctuation pressure root mean square comparison diagrams.
Specific implementation mode
Embodiment one
For the valve system of one main valve of Waterpower type ship elevator, two auxiliary valve, the method for the present invention is to optimize the arrangement of three groups of valves
Pattern makes it be arranged in space triangle disposition, while cancelling valve back breeches pipe build, replaces with anti-with " circle " overflow section
Vibration body.The present invention can improve fluidised form after valve, provide buffering area for flow after valve, reduce the pressure fluctuation of pipeline after valve, improve valve
Door system anti-cavitation performance eliminates vibration source, plays antivibration effect.
As shown in Fig. 2, three valves that Waterpower type ship elevator valve system includes Y-pipe before valve, connect with Y-pipe before valve
Door（One main valve, 1, two auxiliary valve 2）With an antivibration body 3.Antivibration body 3 is that there are three in water inlet and a water outlet for tool
Hollow structure, three water inlets connect one to one with valve export, and water outlet is connected to downstream technology main pipeline.Three valves are in sky
Between triangle disposition solid arrangement, using space triangular type arrange, wherein main valve is located above, and two auxiliary valves are located under main valve
Square both sides.Antivibration body uses overflow section for the cylinder design of " circle ", and sectional area is more than the total sectional area of three valves,
It is 3 ~ 5 times of three valve total sectional areas.The length of antivibration body is about 3 times or so of water delivery main pipeline diameter.
Transformation front and back vibration characteristics comparison such as Fig. 3：After optimizing design scheme of the present invention, main valve measuring point is vertically to vibration
Amplitude is reduced to 2g by 10g, and horizontal direction vibration is also reduced to 1g from 3g, and effectiveness in vibration suppression is fairly obvious.
Fluctuation pressure Character Comparison such as Fig. 4, pipeline measuring point pc5 pressure fluctuation root mean square maximum values are after breeches pipe build main valve
2.7m, it is 0.09m that root maximum value is divided equally in top measuring point pc7 pressure fluctuations after antivibration body main valve, smaller 2.61m than culvert sudden expansion（Drop
Low 90% or more）.
In addition to the implementation, the present invention can also have other embodiment.It is all vertical using three valve space triangle dispositions
The technical solution that " circle " overflow section antivibration body is added after body layout pattern+valve, falls within the scope of protection required by the present invention.
Claims (10)
1. a kind of Waterpower type ship elevator valve system optimum design method having resistance to shock, it is characterised in that：By hydraulic
Three valves of ship lift water-carriage system are arranged in space triangle disposition solid, while connecting one in the exit of three valves
Manifold after the shared former valve of antivibration body substitution, the area of passage of antivibration body are more than the total sectional area of three valves, antivibration body one
The outlet of three valves of end connection, the other end are directly connected to downstream technology main pipeline, are provided buffering area for flow after valve, are improved
Fluidised form reduces the fluctuation pressure after former valve, reduces valve system vibration amplitude.
2. a kind of Waterpower type ship elevator valve system optimum design method having resistance to shock as described in claim 1,
It is characterized in that three valve relative positions of triangle disposition arrangement are：Main valve is located above, and two auxiliary valves are located under main valve
Square both sides.
3. a kind of Waterpower type ship elevator valve system optimum design method having resistance to shock as described in claim 1,
It is characterized in that the antivibration body is the hollow structure having there are three water inlet and a water outlet, water inlet is corresponding with valve export
Connection, water outlet are connect with downstream technology main pipeline.
4. a kind of Waterpower type ship elevator valve system optimum design method having resistance to shock as described in claim 1,
It is characterized in that the overflow section of the antivibration body is rounded.
5. a kind of Waterpower type ship elevator valve system optimum design method having resistance to shock as described in claim 1,
It is characterized in that the area of passage of the antivibration body is 3 ~ 5 times of three valve total sectional areas.
6. a kind of Waterpower type ship elevator valve system having resistance to shock, including Y-pipe and three valves before the valve of interconnection
Door, it is characterised in that further include an antivibration body, three valves are arranged in space triangle disposition solid, the antivibration body one
The outlet of three valves of end connection, the other end are directly connected to downstream technology main pipeline, and the area of passage of antivibration body is more than three
The total sectional area of valve.
7. a kind of Waterpower type ship elevator valve system having resistance to shock as claimed in claim 6, it is characterised in that three
Valve includes a main valve and two auxiliary valves, and three valve relative positions are：Main valve is located above, and two auxiliary valves are located at master
Both sides below valve.
8. a kind of Waterpower type ship elevator valve system having resistance to shock as claimed in claim 6, it is characterised in that described
Antivibration body is that there are three the hollow structure of water inlet and a water outlet, three water inlets companies corresponding with three valve exports for tool
It connects, water outlet is connect with downstream technology main pipeline.
9. a kind of Waterpower type ship elevator valve system having resistance to shock as claimed in claim 6, it is characterised in that described
The overflow section of antivibration body is rounded.
10. a kind of Waterpower type ship elevator valve system having resistance to shock as claimed in claim 6, it is characterised in that described
The area of passage of antivibration body is 3 ~ 5 times of three valve total sectional areas.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611218468.3A CN106638534B (en) | 2016-12-26 | 2016-12-26 | A kind of Waterpower type ship elevator valve system optimum design method having resistance to shock |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611218468.3A CN106638534B (en) | 2016-12-26 | 2016-12-26 | A kind of Waterpower type ship elevator valve system optimum design method having resistance to shock |
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| CN106638534A CN106638534A (en) | 2017-05-10 |
| CN106638534B true CN106638534B (en) | 2018-08-31 |
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| CN201611218468.3A Active CN106638534B (en) | 2016-12-26 | 2016-12-26 | A kind of Waterpower type ship elevator valve system optimum design method having resistance to shock |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108560512B (en) * | 2018-04-23 | 2020-05-05 | 浙江水利水电学院 | Pressure regulating chamber with flexible sudden expansion interface and dynamic impedance |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU562618A1 (en) * | 1971-12-02 | 1977-06-25 | Hydraulic lift | |
| CN101644044A (en) * | 2008-08-06 | 2010-02-10 | 李泉洞 | Ship case-free ship lift and parallel ship locks |
| CN201908290U (en) * | 2010-12-27 | 2011-07-27 | 中国水电顾问集团昆明勘测设计研究院 | Water filling and draining valve device of hydraulic ship lift |
| CN102505676B (en) * | 2011-11-02 | 2013-12-18 | 西安航天自动化股份有限公司 | Hydraulic driving system of hydraulic-driven ship lift |
| CN203320505U (en) * | 2013-07-08 | 2013-12-04 | 重庆大唐国际彭水水电开发有限公司 | Ship lifter water supplying-drainage system |
| CN206418476U (en) * | 2016-12-26 | 2017-08-18 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of Waterpower type ship elevator valve system for possessing resistance to shock |
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