US 10,538,890 B2Granted

Hydraulic ship lift with anti-overturning capability and method for using the same

AssigneesHuaneng Lancang River Hydropower Inc., Power China Kunming Engineering Corporation Limited, Nanjing Hydraulic Research Institute, China Institute of Water Resources and Hydropower Research

InventorsHongqi Ma, Yaan Hu, Zongliang Zhang, Xianghua Yuan, Zejiang Xiang, Yongping Al, Yimin Chuan, Guanqun Nan, Rui Zou, Zhaoxin Chen, Xiaolin Hu, Hongtao Zhang, Haibin Xiao, Qun Huang, Keheng Zhou, Xuexing Cao, Zichong Li, Renchao Ma, Yinan Cao, Yun Ling, Sisi Xie, Junyang Yu, Zhonghua Li, Yun Li, Guoxiang Xuan, Xin Wang, Xiujun Yan, Shu Xue, Chao Guo, Yue Huang, Yihong Wu, Rui Zhang, Dong Zhang, Jinxiong Zhang, Wenyuan Zhang, Hongwei Zhang, Jianbiao Gao

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Abstract

A hydraulic ship lift, including: a mechanical synchronizing system; a stabilizing and equalizing hydraulic driving system; and a self-feedback stabilizing system. The stabilizing and equalizing hydraulic driving system includes first resistance equalizing members arranged at corners of branch water pipes or/and second resistance equalizing members arranged at bifurcated pipes, circular forced ventilating mechanisms arranged at front of water delivery valves of a water delivery main pipe, and pressure-stabilizing and vibration-reducing boxes arranged behind the water delivery valves. The self-feedback stabilizing system includes a plurality of guide wheels; each guide wheel of the self-feedback stabilizing system is fixed on a ship reception chamber through a supporting mechanism. The supporting mechanism includes a base connected to the ship reception chamber, a support articulated on the base, a flexible member fixedly arranged between the support and the base, and a limiting stopper arranged on the outer side of the flexible member.

Claims10

Dependent claims

A hydraulic ship lift, comprising:

a ship reception chamber for containing a ship;
a plurality of wire ropes;
and
a stabilizing and equalizing hydraulic driving system, the stabilizing and equalizing hydraulic driving system comprising:
a plurality of vertical shafts;
a plurality of floats;
a water delivery main pipe, the water delivery main pipe comprising a plurality of water delivery valves;
a plurality of branch water pipes, each branch water pipe comprising a straight pipe at a lower part, a plurality of straight pipes at an upper part, and a plurality of angle pipes and a plurality of bifurcated pipes at a middle part;
a plurality of first resistance equalizing members or/and a plurality of second resistance equalizing members:
a plurality of circular forced ventilating mechanisms;
and
a plurality of pressure-stabilizing and vibration-reducing boxes;
wherein:
the water delivery main pipe is connected to the straight pipe at the lower part of each branch water pipe;
in each branch water pipe, each angle pipe is connected to one bifurcated pipe, and the straight pipe at the lower part is connected to the straight pipes at the upper part via the angle pipes and the bifurcated pipes;
a water outlet end of each straight pipe at the upper part in each branch water pipe is arranged at a bottom of one vertical shaft;
each float is disposed in one vertical shaft;
each float is connected to the ship reception chamber via one wire rope;
the water delivery main pipe is adapted to supply water through the branch water pipes into the vertical shafts to raise the floats for lowering the ship reception chamber;
when the stabilizing and equalizing hydraulic driving system comprises the first resistance equalizing members, each first resistance equalizing member is arranged at a corner of one angle pipe;
when the stabilizing and equalizing hydraulic driving system comprises the second resistance equalizing members, each second resistance equalizing member is arranged at one bifurcated pipe;
each circular forced ventilating mechanism is arranged at front of one water delivery valve;
and
each pressure-stabilizing and vibration-reducing box is arranged behind one water delivery valve.

21 more elements

A method for operating a hydraulic ship lift, the hydraulic ship lift comprising:

a ship reception chamber;
a mechanical synchronizing system comprising wire ropes, synchronizing shafts, and drums each having a brake;
a stabilizing and equalizing hydraulic driving system;
and
a self-feedback stabilizing system;
and
the method comprising:
(1) at a first stage, a tilt of the ship reception chamber is 0≤Δ<θR;
at this stage, an anti-overturning moment of the self-feedback stabilizing system fulfills the following formula:
Kd×Δ+Md0=Md>γd×(Mc+Mw)=γd×(Kc×Δ+Mw)
an overall anti-overturning rigidity of the self-feedback stabilizing system fulfills the following formula:
K
d
>
γ
d
×
(
K
c
+
M
w
-
M
d
⁢
⁢
0
/
γ
d
Δ
)
in the formulas:
an overturning moment generated by a tilted ship reception chamber is Mc=Kc×Δ,and its unit is kN·m;
an overturning rigidity of the ship reception chamber is Kc and its unit is kN;
the tilt of the ship reception chamber is Δ and its unit is m;
an initial overturning moment of the ship reception chamber generated by the stabilizing and equalizing hydraulic driving system is Mw , and its unit is kN·m;
a total overturning moment of the ship reception chamber is Mc+Mw=Kc×Δ+Mw and its unit is kN·m;
the anti-overturning moment of the self-feedback stabilizing system is Md=Kd×Δ+Md0 and its unit is kN·m;
a pre-loading anti-overturning moment of the self-feedback stabilizing system is Md0 and its unit is kN·m;
the overall anti-overturning rigidity of the self-feedback stabilizing system is Kd and its unit is kN;
a safety coefficient γd of the self-feedback stabilizing system is 1.5-2.0;
(2) at a second stage, the tilt of the ship reception chamber is θR≤Δ<max;
this stage is defined from a moment that a clearance of the mechanical synchronizing system is eliminated to a moment that the tilt of the ship reception chamber is smaller than a designed allowable limit tilt value Δmax;
at this stage, the self-feedback stabilizing system and the synchronizing shafts of the mechanical synchronizing system jointly bear an anti-overturning capability to the ship reception chamber, the synchronizing shafts of the mechanical synchronizing system exert the main anti-overturning capability, and a proportion of the anti-overturning capability achieved by the self-feedback stabilizing system and the mechanical synchronizing system is related to the overall anti-overturning rigidity Kd of the self-feedback stabilizing system and an overall anti-overturning rigidity KT of the mechanical synchronizing system;
total anti-overturning moments of the self-feedback stabilizing system and the mechanical synchronizing system fulfill the following formula:
Kd×Δ+Md0+KT×(Δ−θR)=Md+MT>(γd+γT)×(Mc+Mw)=(γd+γT)×(Kc×Δ+Mw)
the overall anti-overturning rigidity of the mechanical synchronizing system fulfills the following formula:
K
T
>
(
γ
d
+
γ
T
)
×
(
K
c
×
Δ
+
M
w
)
-
K
d
×
Δ
-
M
d
⁢
⁢
0
(
Δ
-
θ
⁢
⁢
R
)
in the formulas:
an anti-overturning moment of the synchronizing shafts of the mechanical synchronizing system is MT =KT×(Δ−θR) and its unit is kN·m;
the clearance of the mechanical synchronizing system is θ and its unit is radian;
a radius of each drum is R and its unit is m;
the overall anti-overturning rigidity of the mechanical synchronizing system is KT and its unit is kN;
a safety coefficient of the mechanical synchronizing system is γT of 6-7;
the clearance of the mechanical synchronizing system decides a moment at which the mechanical synchronizing system starts exerting the anti-overturning capability;
the overall anti-overturning rigidity KTof the mechanical synchronizing system decides the value of an anti-overturning moment for the ship reception chamber;
(3) at a third stage, the tilt of the ship reception chamber is Δ≥Δmax ;
when the tilt of the ship reception chamber exceeds the designed allowable maximum tilt value Δmax, the self-feedback stabilizing system limits the tilt of the ship reception chamber;
a continuously increased overturning moment of the ship reception chamber is exerted on the mechanical synchronizing system;
at this stage, the stabilizing and equalizing hydraulic driving system is closed, the ship reception chamber of the ship lift stops operating, the brakes on the drums of the mechanical synchronizing system start to operate, the continuously increased overturning moment of the ship reception chamber is born by the brakes on the drums;
and a total drum braking force fulfills the following formula:
Fz≥γz×Fc
in the formula:
the total drum braking force is Fz and its unit is kN;
a total weight of the water body in the ship reception chamber is Fcand its unit is kN;
and
a safety coefficient γz of the total drum braking force is 0.4-1.0.

105 more elements

Dependencies are inferred from the claim text.