CN112883237B - Method for improving operation efficiency of side water-draining ship lock by using inertia super-drop of water delivery system - Google Patents
Method for improving operation efficiency of side water-draining ship lock by using inertia super-drop of water delivery system Download PDFInfo
- Publication number
- CN112883237B CN112883237B CN202110051162.8A CN202110051162A CN112883237B CN 112883237 B CN112883237 B CN 112883237B CN 202110051162 A CN202110051162 A CN 202110051162A CN 112883237 B CN112883237 B CN 112883237B
- Authority
- CN
- China
- Prior art keywords
- water
- valve
- delta
- opening
- ship lock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 217
- 238000000034 method Methods 0.000 title claims abstract description 56
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 5
- 238000004088 simulation Methods 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 4
- 238000007726 management method Methods 0.000 claims description 3
- 238000013178 mathematical model Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/90—Details of database functions independent of the retrieved data types
- G06F16/901—Indexing; Data structures therefor; Storage structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02C—SHIP-LIFTING DEVICES OR MECHANISMS
- E02C1/00—Locks or dry-docks; Shaft locks, i.e. locks of which one front side is formed by a solid wall with an opening in the lower part through which the ships pass
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/90—Details of database functions independent of the retrieved data types
- G06F16/903—Querying
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/28—Design optimisation, verification or simulation using fluid dynamics, e.g. using Navier-Stokes equations or computational fluid dynamics [CFD]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/04—Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/40—Business processes related to the transportation industry
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2111/00—Details relating to CAD techniques
- G06F2111/10—Numerical modelling
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/08—Fluids
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/14—Force analysis or force optimisation, e.g. static or dynamic forces
-
- 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
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/30—Flood prevention; Flood or storm water management, e.g. using flood barriers
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- General Engineering & Computer Science (AREA)
- Databases & Information Systems (AREA)
- Strategic Management (AREA)
- Human Resources & Organizations (AREA)
- Economics (AREA)
- Data Mining & Analysis (AREA)
- Tourism & Hospitality (AREA)
- General Business, Economics & Management (AREA)
- Marketing (AREA)
- Ocean & Marine Engineering (AREA)
- Structural Engineering (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- Computing Systems (AREA)
- Development Economics (AREA)
- Algebra (AREA)
- Game Theory and Decision Science (AREA)
- Fluid Mechanics (AREA)
- Civil Engineering (AREA)
- Entrepreneurship & Innovation (AREA)
- Mechanical Engineering (AREA)
- Operations Research (AREA)
- Quality & Reliability (AREA)
- Computational Linguistics (AREA)
- Software Systems (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Primary Health Care (AREA)
- Barrages (AREA)
Abstract
A method for improving the operation efficiency of a side water discharge ship lock by utilizing the inertia super-drop of a water delivery system comprises the following steps: calculating the water level difference delta Z between a side water outlet of the ship lock and a downstream approach channel; determining the advanced water valve closing process of the water drain valve according to the water head difference delta Z, namely the residual water head delta H 0 Stop opening n of water-moving shut-off valve 0 (ii) a Closing the water filling valve and closing the upstream herringbone gate; opening a water drainage valve to drain water in the gate chamber until the water drainage valve is in a full-open state; the difference value delta H between the water level of the lock chamber and the water level of the downstream approach channel is synchronously measured in the water drainage process, and when the delta H is less than or equal to the delta H for the first time 0 Starting the determined water drain valve to advance the water to close the valve; the water levels on the two sides of the downstream herringbone door are level, and after the herringbone door is opened to the end of opening, the drain valve is started again by the opening degree n 0 Turning off to the opening degree of 0. The invention can ensure the operation of the miter gate and the safe berthing of the lock chamber, reduce the operation equipment, shorten the water drainage time and achieve the aim of improving the passing efficiency of the ship lock.
Description
Technical Field
The invention relates to the technical field of ship lock hydraulics, in particular to a method for improving the operation efficiency of a side water discharge ship lock by utilizing the inertia super-drop of a water delivery system.
Background
The high-head ship lock generally adopts a distributed water delivery system, and because the water delivery system is complex and has large water flow inertia, the huge water flow inertia at the last stage of water discharge of the ship lock can retard the reduction of flow, so that the inertia of the water level in the lock chamber is over-reduced. The inertia super-drop shortens the water drainage time of the ship lock, and simultaneously, the inertia super-drop also generates great harm to the operation of the ship lock. The method mainly comprises the following steps: (1) the herringbone door is subjected to larger reverse thrust by overlarge inertia over-drop, so that a member of a headstock gear of the herringbone door is damaged, and the electromechanical equipment of the herringbone door is adversely affected; (2) the water level difference exists between the inner side and the outer side of a herringbone door at the downstream of the ship lock due to the inertia over-drop, and the herringbone door can form surge in the lock chamber when being opened, so that the mooring condition of a ship in the lock chamber is deteriorated; (3) excessive inertial overshoot may also reduce the effective water depth of the lock chamber, risking bottoming of the lock vessel.
In order to reduce the damage caused by inertia over-drop, the high-head lock generally adopts a water-moving-ahead valve-closing process to reduce the inertia over-drop, namely, at the moment when the lock sluices to a certain residual water head difference delta H (the difference between the water level of a lock chamber and the water level of a sluicing outlet of the lock, unit m), the water-moving is started to close a sluicing valve, the running is stopped after the specified valve opening n is reached, and after the water levels on the inner side and the outer side of the lock chamber are level, the herringbone door is opened and is finally opened, the valve is continuously closed to be completely closed. Prototype observation data of ship locks such as the Guzhou dam and the like show that the inertia over-drop at the last stage of the water drainage of the ship lock can be effectively reduced by adopting a measure of moving the water closing valve in advance, and the safe operation of the ship is guaranteed.
In order to reduce the influence of ship lock water discharge on the navigation water flow condition of the downstream navigation channel, a side water discharge method or a part of side water discharge method is mostly adopted, namely, a water discharge box culvert is adopted to directly discharge most lock chamber water bodies to a main river channel. Due to the influence of power generation and flood discharge of a main river channel, a large water surface slope is formed on the water surface of the river channel, and the water level of a side water discharge outlet is higher than that of a downstream approach channel, so that after the ship lock is completely discharged, the water level in a lock chamber is higher than that of the downstream approach channel by delta Z, and the condition that the door opening condition of the herringbone door is not met is easy to happen. In order to balance the difference between the water level inside and outside the lock chamber, an auxiliary water discharge valve is opened at the end of the ship lock water discharge to lower the water level inside the lock chamber to be flush with the water level of the downstream approach channel, and then the herringbone door is normally opened. The mode of the combined operation of the main valve and the auxiliary valve increases the draining time of the ship lock and reduces the operating efficiency of the ship lock. Particularly, in order to reduce the influence of the inertia over-drop of the ship lock, the valves adopt a measure of closing the valves by moving water in advance, the fixed measure of closing the valves by moving water in advance is suitable for a certain delta Z, cannot adapt to different delta Z values caused by different operation periods (flood period and non-flood period) of the hydraulic junction, and provides a new challenge for the efficient operation of the ship lock.
Therefore, the ship lock valve operation process which is adaptive to the unfixed water level difference (delta Z) between the inside and the outside of the lock chamber existing at the last stage of side water draining of the ship lock is provided, the ship lock operation steps are simplified, and the ship lock efficiency is improved.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for improving the running efficiency of a side sluicing ship lock by utilizing the inertia over-drop of a water delivery system, which is suitable for optimizing the running process of a valve of a ship lock with a part of high water head (the side sluicing is arranged, and the difference between the water level (delta Z) inside and outside a lock chamber existing at the last stage of the sluicing is not fixed), simplifies the running steps of the ship lock, and improves the running efficiency.
The technical problem to be solved by the invention can be realized by the following technical scheme:
a method for improving the operation efficiency of a side water discharge ship lock by utilizing the inertia super-drop of a water delivery system comprises the following steps:
step one, respectively reading the water level Z of a side water discharge outlet 1 And water level Z of downstream approach channel behind herringbone door 2 Calculating the water level difference delta Z between the side water outlet of the ship lock and the downstream navigation channel 1 -Z 2 ；
Step two, determining a process of pre-acting water to close the drain valve according to the water head difference delta Z, namely the residual water head delta H 0 Stop opening n of water-moving shut-off valve 0 Wherein the residual head Δ H 0 ＝M-Z 2 M is the water level of the chamber, the opening n of the water-operated shut-off valve 0 The relative opening degree of the valve at the shutdown time;
step three, closing the water filling valve and closing the upstream herringbone gate;
opening a drain valve to drain water in the lock chamber until the drain valve is in a fully opened state, namely, the opening value is 1;
step five, synchronously measuring the difference value of the water level of the lock chamber and the water level of the side sluicing outlet in the sluicing process, namely the residual water head delta H, and when delta H is less than or equal to delta H for the first time 0 Starting the water drain valve pre-actuating water valve closing process determined in the step two, namely continuously closing the valve to the valve opening n 0 Stopping the machine;
step six, the water levels on the two sides of the downstream herringbone door are level, after the herringbone door is opened to the end of opening, the drain valve is started again to be opened by the opening degree n 0 Off to 0.
Further, the side outlet water level Z 1 And the water level Z of the downstream approach channel behind the herringbone gate 2 Obtained by reading high-precision water level gauges previously arranged in corresponding positions.
Further, in the second step, the water level difference delta Z is compared with the inertia over-reduction value h 0 The difference between the two values determines the process of the drain valve for closing the drain valve in advance.
Further, the second step is implemented as follows: firstly, debugging method based on numerical simulation or prototypeBuilding a database of inertia super-reduction H, a residual water head delta H and an opening n by considering the relevant requirements of ship lock operation, wherein the valve opening n is 0.05x, the residual water head delta H is 0.1y, and x and y are natural numbers; secondly, comparing the relation between h and delta Z, and adopting inertia super-reduction h when h is more than 0 and delta Z is less than or equal to 0.25m 0 And (4) the determined advanced water valve closing process.
Furthermore, the advanced water-driving valve closing process corresponding to different inertia super-drop H is determined by adopting a numerical simulation or prototype debugging mode, the numerical simulation calculation method refers to design specifications of a ship lock water delivery system, and the determined residual water head delta H and the determined opening degree n are determined after the factors of the ship lock operation safety, efficiency and water drainage time are comprehensively considered, and the operation management system and the requirements of the related ship lock are particularly taken as the standard.
The invention provides a method for improving the operation efficiency of a side water-release ship lock by using the inertia super-drop of a water delivery system, which is suitable for the operation process of a ship lock valve with a non-fixed water head (delta Z) between the inside and the outside of a lock chamber in the last stage of water release of a high-head ship lock (side water-release scheme). According to the method, firstly, a database containing parameters of inertia super-drop H, residual water head delta H and opening n of the valve is constructed according to a mathematical model calculation or prototype observation debugging result, and the relation between water level difference delta Z and inertia super-drop H is compared, so that the process of the ship lock for closing the valve by moving water in advance is determined. The inertia ultra-drop utilization method provided by the invention can ensure the operation of the miter gate and the safe berthing of the lock chamber ship, reduce the operation equipment, shorten the water drainage time as much as possible, simplify the operation steps of the ship lock valve, achieve the purpose of improving the passing efficiency of the ship lock, and has good engineering application value.
Drawings
FIG. 1 is a schematic view of a ship lock water discharge port arrangement using side water discharge;
FIG. 2 is a flow chart of a method of improving the operating efficiency of a ship lock utilizing inertial descent of a water delivery system in accordance with the present invention;
fig. 3 is a process line for operating a lock bleed valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 2, a method for improving the operation efficiency of a ship lock by using the inertia super-drop of a water delivery system comprises the following steps:
step one, respectively reading the water level Z of a side water discharge outlet 1 And water level Z of downstream approach channel behind herringbone door 2 Calculating the water level difference delta Z between the side water outlet of the ship lock and the downstream navigation channel 1 -Z 2 ；
Step two, determining parameters of the process of the drain valve for closing the drain valve in advance according to the water head difference delta Z, namely the residual water head delta H 0 And the stop opening n of the water-moving closing valve 0 Wherein the residual head Δ H 0 ＝M-Z 2 M is the water level of the chamber, the opening n of the water-operated shut-off valve 0 The relative opening degree of the valve at the shutdown time;
the second step comprises the following specific implementation steps: firstly, according to methods such as numerical simulation or prototype debugging and the like, and considering related requirements of ship lock operation, a database of inertia super-drop H, residual water head delta H and opening n is constructed (the valve opening n is 0.05x, the residual water head delta H is 0.1y, wherein x and y are natural numbers, so that the accuracy requirement is met while the data quantity is reduced); secondly, comparing the relation between h and delta Z, and when h-delta Z is more than 0 and less than or equal to 0.25m, adopting inertia super-reduction h 0 Advanced water shut-off process (i.e. residual head Δ H) determined by time 0 And the opening value n of the shutdown valve 0 ). Wherein 0 < h 0 If the angle is minus delta Z, the herringbone door can be ensured to be normally opened; requirement h of design Specification of Ship Lock Water delivery System 0 The minus delta Z is less than or equal to 0.25m so as to ensure the operation safety of the ship lock, the discrimination condition can ensure the operation of the herringbone gate and the safety of the ship passing through the lock, and simultaneously, the water drainage time of the ship lock is shortened.
Step three, closing the water filling valve and closing the upstream herringbone gate;
opening a drain valve to drain water in the lock chamber until the drain valve is in a fully opened state, namely, the opening value is 1;
step five, synchronously measuring the difference value of the water level of the lock chamber and the water level of the side water discharge outlet in the water discharge process, namely the residual water head delta H value, and when delta H is less than or equal to delta H for the first time 0 Starting the process of the water release valve determined in the step two to move the water release valve in advance, namely continuously closing the valve to the valve opening n 0 Stopping the machine;
step six, the water levels on the two sides of the downstream herringbone door are level, after the herringbone door is opened to the end of opening, the drain valve is started again, and the valve opening degree is changed from n 0 Off to 0 (fully off state).
Example one
The ship lock belongs to a high-head ship lock, a distributed water delivery system is adopted, and the peak value of the water discharge flow of the ship lock is large. In order to reduce the influence of the lock drainage on the navigation water flow condition of the downstream navigation channel, the lock adopts a drainage arrangement scheme of internal and external linkage drainage, namely, most of water in a lock chamber is directly drained to a main river channel through a main drainage gallery and a box culvert (also called a side drainage gallery) which are about 1350m long, and the main river channel is shown in figure 1. Because the box culvert outlet is positioned at the upper stream of the gate of the downstream approach channel and the water level of the river channel has longitudinal gradient, the water level of the box culvert outlet is higher than the water level of the downstream approach channel, when only the box culvert is used for draining water, the water level of the lock chamber before the herringbone gate is higher than the water level of the downstream approach channel behind the gate after the gate is flushed with the water level of the box culvert outlet, and a forward water head is formed in front of the gate. When the forward water head is larger than 10cm, the lower lock head herringbone door cannot be opened, so that two inner short drainage channels for communicating water bodies in front of and behind the gate are additionally arranged at the lower lock head, an auxiliary drainage valve for controlling the inner drainage channels is opened at the last stage of drainage of the lower lock chamber when needed, the main drainage channel is closed, and finally the front water level and the back water level of the herringbone door are leveled to maintain the normal operation of the ship lock, and the corresponding running time of the ship lock is increased.
Aiming at the operation condition of the ship lock and the pivot of the embodiment, in order to facilitate the operation management of the ship lock, the residual water head delta H when the movable water closing valve is closed is kept unchanged, and the water discharge inertia super-discharge amount H is controlled by selecting the small stop opening n of the movable water closing valve so as to adapt to the water head difference delta Z between the water discharge outlet and the downstream approach channel. Firstly, calculating the relation between the opening n of the stop valve of the water-moving shut-off valve and the inertia ultra-drop H under different residual water heads delta H through a mathematical model, wherein the calculation method and the equation are based on the design specification of the ship lock water delivery system. According to the statistics of ship lock operation data, the delta Z variation range is 0-0.8 m, and in order to meet the requirement that the inverted water heads of the herringbone gates in the delta Z variation range are all less than or equal to 0.25m (specification requirement), the system should have the over-leakage capacity with h being 0-1.05 m so as to meet the requirement that h is more than 0 and delta Z is less than or equal to 0.25 m. And obtaining the drainage over-discharge amount h corresponding to the delta Z one by controlling the small opening n of the stop of the water-moving closing valve.
In the examples, the inertial super drop H, the residual head Δ H, and the opening n obtained by calculating the residual head Δ H to 5.5m, 5.3m, 5.1m, and 4.9m using a mathematical model are shown in tables 1 to 4, where the opening n is a multiple of 0.05.
TABLE 1 inertia overshoot for different advanced water shut-off processes (Δ H ═ 5.5m)
TABLE 2 inertia overshoot for different advanced water shut-off processes (Δ H ═ 5.3m)
TABLE 3 inertia overshoot for different advanced water shut-off processes (Δ H ═ 5.1m)
TABLE 4 inertia overshoot for different advanced water shut-off processes (Δ H4.9 m)
In view of the requirement of the coverage area H, 5.1m and 4.9m can be selected, and in view of improving the water delivery efficiency, it is more advantageous to select a smaller Δ H, so that the flowing water valve closing parameter listed in table 4 is selected, where Δ H is 4.9 m.
Example for typical working condition Q of flood discharge power generation of hub flood season 45200m 3 And/s, carrying out verification on the method for improving the operating efficiency of the ship lock by using the inertia super-drop of the water delivery system. The method comprises the following steps:
step one, respectively reading the water level Z of a side water discharge outlet 1 71.86m and downstream approach path water level Z 2 71.27m, and calculating the water level difference delta Z between the side water outlet of the ship lock and the downstream approach channel 1 -Z 2 ＝0.59m；
And step two, the water head difference delta Z is 0.59m, the residual water head delta H is 4.9m, and the obtained inertia super-reduction value H is more than 0.59m and less than or equal to 0.84m according to the discrimination standard 0 and less than H-delta Z and less than or equal to 0.25 m. From table 4, the valve opening n is determined to be 0.45 and the corresponding inertia overshoot h is determined to be 0.67 m. The corresponding valve operation process is shown in fig. 3;
step three, closing the water filling valve and closing the upstream herringbone gate;
opening a drain valve to drain water in the lock chamber until the drain valve is in a fully opened state, namely, the opening value is 1;
and step five, synchronously measuring the difference value between the water level of the lock chamber and the water level of the downstream approach channel, namely the residual water head delta H value in the water drainage process, and starting the water drainage valve advance water-driving valve closing process determined in the step two when the delta H is 4.9 m.
And sixthly, the front water level and the rear water level of the downstream herringbone door are leveled, the drainage valve is started again after the herringbone door is opened to the end of opening, and the opening degree is closed to be 0 (a fully closed state) from 0.45.
The related results show that the drainage rate under the hub is 45200m 3 When the difference between the water level of the great river at the outlet of the sluice box culvert and the water level difference Delta Z of the downstream approach channel is 0.59m, a water closing valve is moved when the residual water head Delta H is 4.9m, the water level is waited to be flushed when the valve opening n is 0.45, and the sluice flushing time is 11.82minThe inverted water head is stable, no obvious water flow sign is seen, and the inverted water head meets the design requirement in the opening process of the miter gate.
In conclusion, the method for improving the operation efficiency of the ship lock by using the inertia super-drop of the water delivery system can ensure the operation of the miter gate and the safe berthing of the lock chamber ship, reduce operation equipment, shorten water drainage time as much as possible and simplify the operation steps of the ship lock valve.
The above description is only an embodiment 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 included in the scope of the present invention.
Claims (4)
1. A method for improving the operation efficiency of a side water discharge ship lock by utilizing the inertia super-drop of a water delivery system is characterized by comprising the following steps:
step one, respectively reading the water level Z of a side water discharge outlet 1 And water level Z of downstream approach channel behind herringbone door 2 Calculating the water level difference delta Z between the side water outlet of the ship lock and the downstream navigation channel 1 -Z 2 ；
Step two, determining a process of pre-acting water to close the drain valve according to the water head difference delta Z, namely the residual water head delta H 0 And the stop opening n of the water-moving closing valve 0 Wherein the residual head Δ H 0 ＝M-Z 2 M is the water level of the chamber, the opening n of the water-operated shut-off valve 0 The relative opening degree of the valve at the shutdown time;
step three, closing the water filling valve and closing the upstream herringbone gate;
opening a drain valve to drain water in the lock chamber until the drain valve is in a fully opened state, namely, the opening value is 1;
step five, synchronously measuring the difference value between the water level of the lock chamber and the water level of the downstream approach channel in the water drainage process, namely the residual water head delta H, and when delta H is less than or equal to delta H for the first time 0 Starting the water drain valve pre-actuating water valve closing process determined in the step two, namely continuously closing the valve to the valve opening n 0 Then stopping the machine;
step six, the water levels on the two sides of the downstream herringbone door are level, after the herringbone door is opened to the end of opening, the drain valve is started again to be opened by the opening degree n 0 Closing to the opening degree of 0;
the second step is implemented by the following steps: firstly, according to a numerical simulation or prototype debugging method and considering the relevant requirements of ship lock operation, constructing a database of inertia super-reduction H, a residual water head delta H and an opening n, wherein the opening n of a valve is 0.05x, the residual water head delta H is 0.1y, and x and y are natural numbers; secondly, comparing the relation between h and delta Z, and adopting inertia super-reduction h when h is more than 0 and delta Z is less than or equal to 0.25m 0 And (4) the determined advanced water valve closing process.
2. The method of claim 1, wherein the side sluicing outlet level Z is a side sluicing outlet level 1 And water level Z of downstream approach channel behind herringbone door 2 Obtained by reading high-precision water level gauges previously arranged in corresponding positions.
3. The method for improving the operation efficiency of the side sluicing ship lock by using the inertia over-drop of the water delivery system as claimed in claim 1, wherein the step two is to compare the water level difference Δ Z with the inertia over-drop value h 0 And determining the process of advancing the water-closing valve of the water-release valve according to the difference value between the two steps.
4. The method for improving the operation efficiency of the side water draining ship lock by using the inertia over-drop of the water delivery system according to claim 1, wherein the advanced water-closing valve processes corresponding to different inertia over-drops H are determined by adopting a numerical simulation or prototype debugging mode, the numerical simulation calculation method refers to design specifications of the ship lock water delivery system, and the determined residual water head delta H and the determined opening degree n are determined after the factors of the safety, the efficiency and the water draining time of the ship lock are comprehensively considered, and particularly the operation management system and the requirements of the related ship lock are taken as the standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110051162.8A CN112883237B (en) | 2021-01-14 | 2021-01-14 | Method for improving operation efficiency of side water-draining ship lock by using inertia super-drop of water delivery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110051162.8A CN112883237B (en) | 2021-01-14 | 2021-01-14 | Method for improving operation efficiency of side water-draining ship lock by using inertia super-drop of water delivery system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112883237A CN112883237A (en) | 2021-06-01 |
| CN112883237B true CN112883237B (en) | 2022-08-16 |
Family
ID=76049507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110051162.8A Active CN112883237B (en) | 2021-01-14 | 2021-01-14 | Method for improving operation efficiency of side water-draining ship lock by using inertia super-drop of water delivery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112883237B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101268459A (en) * | 2005-09-22 | 2008-09-17 | 马赛尔·莫拉雷斯·冈萨雷斯 | Mobile networking business and advertising unit |
| CN103870608B (en) * | 2014-04-08 | 2017-01-04 | 武汉大学 | A kind of drawing knowledge architecture based on cartographic symbol and the method for Formal Representation |
| CN104594320B (en) * | 2014-12-17 | 2016-06-29 | 长江勘测规划设计研究有限责任公司 | Cross fish formula ship lock and cross fish method |
| CN109117588B (en) * | 2018-09-11 | 2021-06-01 | 水利部交通运输部国家能源局南京水利科学研究院 | Method for determining top elevation of corridor at lock water delivery valve section |
| CN111881561B (en) * | 2020-07-09 | 2021-12-03 | 长江三峡通航管理局 | Ship lock water-driving valve-closing process debugging method capable of shortening water filling time |
| CN111896220A (en) * | 2020-07-09 | 2020-11-06 | 长江三峡通航管理局 | Ship lock hydraulics prototype observation method |
-
2021
- 2021-01-14 CN CN202110051162.8A patent/CN112883237B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112883237A (en) | 2021-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106096203B (en) | A kind of substrate construction method of hinge dam | |
| Davydov et al. | Computer implementation of the mathematical model for water flow management by a hydro complex | |
| CN105756011B (en) | A kind of tidal bore trend, tendency generating means of indoor physical model experiment | |
| US20040108731A1 (en) | Ship lock electrical energy generation | |
| CN110909490A (en) | Reservoir ice dam water blocking simulation method based on simplified Saint-Venn equation set | |
| CN112883237B (en) | Method for improving operation efficiency of side water-draining ship lock by using inertia super-drop of water delivery system | |
| KR102640967B1 (en) | One-Dimensional River Flow Analysis Technology | |
| CN105386426A (en) | Construction for transforming diversion tunnel into ecological drainage tunnel controlled by radial gate and method for construction | |
| CN116523265B (en) | Shipping hub waterlogging scheduling method and system considering river channel scour prevention | |
| CN109706906A (en) | A kind of triangle gate ship lock opens the control method of lock operation | |
| Chen et al. | Applying energy theory to understand the relationship between the Yangtze River and Poyang Lake | |
| CN107090809B (en) | A kind of low water head Downstream of Sluice stilling pond method of construction | |
| CN106192966B (en) | A kind of multilift lock water-filling and drainage flow path quick calculation method | |
| Vereide et al. | Case study: Damaging effects of increasing the installed capacity in an existing hydropower plant | |
| CN107447719B (en) | The method for eliminating gates of segmental shape bottom seal and connector cavitation corrosion and flutter failure | |
| Schohl | Discharge Correlations for Spillways with Radial Gates | |
| CN206110099U (en) | Hydropower that closely dams station | |
| Kitamura et al. | Study on scouring phenomena at downstream of dam during flood control | |
| Mikhailov et al. | Deltas as indicators of natural and human-induced changes in the regimes of rivers and seas | |
| Vereide et al. | Upgrading of sand traps in existing hydropower plants | |
| CN103924559B (en) | A kind of multi-functional tilting Bottom Sutlet gate | |
| Đorđević | Tina Dašić | |
| Zhang et al. | Experimental study of elimination of vortices along guide wall of bank spillway | |
| Badareenarayana | Some Guidelines for Installing Power Stations in Irrigation Canals | |
| CN116289788A (en) | Gate dam of branch gate and reservoir area siltation control method based on gate dam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230308 Address after: 430010 No. 23, Huangpu Avenue, Wuhan, Hubei Patentee after: CHANGJIANG RIVER SCIENTIFFIC Research Institute OF CHANGJIANG WATER RESOURCES COMMISSION Patentee after: CHINA THREE GORGES Corp. Patentee after: THREE GORGES NAVIGATION AUTHORITY Address before: 430010 No. 23, Huangpu Avenue, Wuhan, Hubei Patentee before: CHANGJIANG RIVER SCIENTIFFIC Research Institute OF CHANGJIANG WATER RESOURCES COMMISSION |
|
| TR01 | Transfer of patent right |