CN-121976493-A - Method for improving operation efficiency of ship lift navigation channel auxiliary lock chamber

CN121976493ACN 121976493 ACN121976493 ACN 121976493ACN-121976493-A

Abstract

The invention discloses a method for improving operation efficiency of an auxiliary lock chamber of a ship lift navigation channel, which belongs to the technical field of ship lift navigation channel hydraulics and comprises the following steps of S1, arranging a water level gauge in a key area in the ship lift navigation channel, S2, reading a non-constant water level fluctuation value H in the key area in the stored ship lift navigation channel in real time, S3, calculating a non-constant water level fluctuation amplitude in the key area in the ship lift navigation channel time by time, S4, comparing operation scheduling limit of the ship lift, and determining whether the auxiliary lock chamber needs to be put into operation. The method for improving the operation efficiency of the auxiliary lock chamber of the ship lift navigation channel can effectively solve the problems that in the prior art, the frequent operation of the auxiliary lock chamber is long in time consumption, the navigation efficiency is greatly influenced, and the metal structure of the fixed-coil type headstock gear is greatly shortened due to the repeated use of the auxiliary lock head working door.

Inventors

CHEN CHENG
LIU HUOJIAN
YANG WEI
LIU ZHIXIONG
ZHOU JIAWEI
LIU JIAYANG
HE HAIBO

Assignees

三峡金沙江川云水电开发有限公司

Dates

Publication Date: 20260505
Application Date: 20251231

Claims (10)

1. A method for improving the operation efficiency of an auxiliary lock chamber of a ship lift navigation channel is characterized by comprising the following steps: s1, arranging a water level gauge in a key area in a ship lift navigation channel, and measuring the water level change of the key area; S2, reading a non-constant water level fluctuation value H in a key area in the storage navigation channel in real time; S3, calculating the fluctuation amplitude of the non-constant water level in the key area in the ship lift navigation channel time by time to obtain the water level amplitude delta H in the interval time, namely delta H=the current water level fluctuation value (H t1 ) -the water level fluctuation value (H t0 ) before the interval time; S4, comparing the operation scheduling limit of the ship lift, and determining whether the auxiliary lock chamber needs to be put into operation. When the water level amplitude in the downstream guide channel reaches or exceeds a numerical value delta H within an interval time, the docking needs to be stopped to ensure safety, the operation risk of the ship lift is judged by comparing the delta H and the delta H calculated in real time, and whether the auxiliary lock chamber needs to be put into operation is determined.
2. The method for improving the operation efficiency of the auxiliary lock chamber of the ship lift navigation channel according to claim 1, wherein the key area in the ship lift navigation channel in the step S1 comprises a lower lock head docking area of the ship lift and a navigation channel berthing pier.
3. The method for improving the operation efficiency of the auxiliary lock chamber of the ship lift navigation channel according to claim 1, wherein the water level gauge in the step S1 automatically tracks one or more of a water level gauge, a water level sensor, an ultrasonic water level gauge and a radar water level gauge.
4. The method for improving the operation efficiency of the ship lift navigation channel auxiliary lock chamber according to claim 1, wherein the non-constant water level fluctuation value H data in the step S2 can be transmitted to a server in real time, and the data transmission adopts a field wireless networking or wireless network technology.
5. The method for improving the operation efficiency of the auxiliary lock chamber of the ship lift navigation system according to claim 1, wherein in the step S3, the minimum time interval is not more than 5 seconds when the water level fluctuation amplitude DeltaH is satisfied.
6. The method for improving the operation efficiency of the auxiliary lock chamber of the ship lift navigation system according to claim 1, wherein the middle time in the step S3 is ten minutes, namely DeltaH=the current water level fluctuation value H t1 -ten minutes ago, namely the water level fluctuation value H t0 .
7. The method of claim 6, wherein the operation scheduling restriction of the ship lift in step S4 is when the amplitude of the water level in the downstream pilot reaches or exceeds a value of 0.2 m within ten minutes.
8. The method for improving the operation efficiency of the auxiliary lock chamber of the ship lift navigation channel according to claim 7, wherein in the step S4, when the water level amplitude DeltaH which is 10 minutes or more is 0.2m, the auxiliary lock chamber is put into operation.
9. The method for improving the operation efficiency of the auxiliary lock chamber of the ship lift navigation channel according to claim 1, wherein the water level change of the key area in the ship lift navigation channel is consistent.
10. The method for improving the operation efficiency of the auxiliary lock chamber of the ship lift navigation channel according to claim 8, wherein in the step S3, the water level amplitude delta H in the interval time is obtained according to the data of any water level gauge arranged in the key area.

Description

Method for improving operation efficiency of ship lift navigation channel auxiliary lock chamber Technical Field The invention belongs to the technical field of guide channel hydraulics. In particular to a method for improving the operation efficiency of an auxiliary lock room of a ship lift navigation channel. Background The ship lift is a giant mechanical device for lifting a ship to overcome the concentrated water level drop (such as a dam, etc.) on a channel. During the process of passing the ship lift, the flow state of the water flow in the downstream guide channel is prevented from being changed drastically, so that the ship can safely enter and exit the downstream guide channel. In the process of docking a ship lift with a downstream approach channel, the water level difference is required to be ensured to be smaller (generally within 0.1 m), otherwise, the docking failure is triggered. When the water level amplitude in the downstream guide channel reaches or exceeds a certain value within 20min, the butt joint needs to be stopped to ensure safety. In order to meet the requirements of power generation and the like, a part of hydropower station hubs can carry out peak regulation or switching according to the network regulation requirements in the running process of the unit, the downward leakage flow can change, and unsteady flow phenomena are inevitably generated in a river channel and a pilot channel at the downstream of the hubs, so that the water level fluctuation of the river channel and the pilot channel is caused. Because the source of the unsteady flow of the navigation channel is complex, the fluctuation value of the unsteady flow of the navigation channel under various conditions is difficult to accurately predict, the operation of the ship lift is difficult to guide, for example, an auxiliary lock chamber is designed at the downstream of the ship lift, the problems can be relieved to a certain extent, the auxiliary lock chamber is needed to be put into when the leakage flow under the junction changes, but the frequent operation of the auxiliary lock chamber is long in time consumption, has great influence on navigation efficiency, and the repeated use of the auxiliary lock head working door greatly shortens the metal structure of the fixed-coil type headstock gear. Therefore, a method for improving the operation efficiency of the auxiliary lock chamber of the ship lift navigation channel is needed under the condition of not affecting the operation complexity and efficiency of the ship lift. Disclosure of Invention The invention aims to provide a method for improving the operation efficiency of the auxiliary lock chamber of the ship lift navigation channel, aiming at the defects, so as to solve the problems that the frequent operation of the auxiliary lock chamber in the prior art is long in time consumption, has a large influence on navigation efficiency, and the metal structure of the fixed-coil type headstock gear is greatly shortened due to the repeated use of an auxiliary lock head working door. In order to achieve the above purpose, the present invention provides the following technical solutions: A method for improving the operation efficiency of an auxiliary lock room of a ship lift approach comprises the following steps: s1, arranging a water level gauge in a key area in a ship lift navigation channel, and measuring the water level change of the key area; S2, reading a non-constant water level fluctuation value H in a key area in the storage navigation channel in real time; S3, calculating the fluctuation amplitude of the non-constant water level in the key area in the ship lift navigation channel time by time to obtain the water level amplitude delta H in the interval time, namely delta H=the current water level fluctuation value (H t1) -the water level fluctuation value (H t0) before the interval time; S4, comparing the operation scheduling limit of the ship lift, and determining whether the auxiliary lock chamber needs to be put into operation. When the water level amplitude in the downstream guide channel reaches or exceeds a numerical value delta H within an interval time, the docking needs to be stopped to ensure safety, the operation risk of the ship lift is judged by comparing the delta H and the delta H calculated in real time, and whether the auxiliary lock chamber needs to be put into operation is determined. Further, in the step S1, the key area in the ship lift guiding channel includes a ship lift lower lock head docking area and a guiding channel guiding pier. Further, in the step S1, the water level gauge automatically tracks one or more of a water level gauge, a water level sensor, an ultrasonic water level gauge and a radar water level gauge. Furthermore, the non-constant water level fluctuation value H data in the step S2 can be transmitted to the server in real time, and the data transmission adopts the field wireless networking or wireless network technology. Fu