A gate head water retaining device and method suitable for rapid change of water level of ship lift channel

Abstract

A kind of lock head water retaining device and method suitable for ship lift channel water level quick change, mainly including working door, maintenance door, working door slot, maintenance door slot etc.;Working door includes working big door, working big door is placed in working door slot and is lifted by lifting device.;Working big door is arranged with locking device left and right, and multiple groups of water retaining locking grooves are arranged in height direction on corresponding working door slot, locking device and corresponding water retaining locking groove are locked or unlocked.;Maintenance door includes multiple maintenance stop log doors placed in maintenance door slot, maintenance stop log door is lifted and lowered by maintenance door opening and closing machine.;Working door slot extends a certain depth along channel bottom, when working big door is adjusted from lowest position to highest position, working big door bottom is always lower than channel bottom. The lock head water retaining device and method suitable for ship lift channel water level quick change provided by the application is convenient and fast for water retaining height adjustment, easy to maintain, and high degree of automation.

Description

Technical Field

[0001] This invention relates to the field of water blocking in ship lifts, and in particular to a gate head water blocking device and method suitable for rapid changes in water level in ship lift channels. Background Technology

[0002] Since ship lifts typically operate vertically, when the ship compartment aligns with the lock gate, a sealing device extends to connect the ship compartment and the lock gate, forming a passageway. Therefore, the sealing surface on the lock gate must remain relatively fixed to the ship compartment. The miter gate structure of a ship lock moves as a whole during operation, making it impossible to provide a relatively fixed sealing surface, and thus it is unsuitable for ship lifts.

[0003] Currently, the lock's main gate is a U-shaped flat gate structure with a tilting gate. The tilting gate opens by tilting and sinking, relying on a hydraulic cylinder to overcome its own weight to open or close. Therefore, the size of the tilting gate cannot be designed to be too large. The channel water level fluctuations that the lock's main gate can accommodate are determined by the size of the tilting gate, thus limiting its capacity. During peak-shaving operations at the power station or when water level regulation is implemented, significant fluctuations in the channel water level occur, and a single lock gate cannot meet the requirements for both water retention and navigation. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a gate head water-blocking device and method suitable for rapid changes in water level in a ship lift channel. It has a compact and reasonable structure, convenient and quick adjustment of water blocking height, easy maintenance and repair, and a high degree of automation, which effectively improves the adaptability and safety of the gate head water-blocking device under conditions of rapid changes in water level in the channel.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] A gate head water-blocking device suitable for rapid changes in water level in a ship lift channel includes a working gate, a maintenance gate, a working gate slot, a maintenance gate slot, a maintenance gate storage, a maintenance gate opening and closing machine, a gate-to-gate drainage system, a bottom drainage system, and a working gate maintenance locking device.

[0007] Among them, the bottom drainage system, working door slot, door-to-door drainage system, and maintenance door slot are arranged respectively extending outward from the ship lift compartment section;

[0008] The maintenance gate hoist and maintenance gate storage are arranged on the top of the gate head channel;

[0009] The maintenance locking device for the working door is arranged at the top of the working door slot;

[0010] The working door includes a working door with a reclining door. The working door is placed in the working door slot and its upper end is raised and lowered by a working door lifting device. Working door locking devices are arranged on the left and right sides of the working door. Multiple sets of water-blocking locking slots are arranged at intervals along the height direction on the corresponding working door slots. The working door locking devices lock or unlock with the corresponding water-blocking locking slots.

[0011] The maintenance gate includes a multi-section maintenance stacked beam gate, which is raised and lowered by a maintenance gate opening and closing machine; when the multi-section maintenance stacked beam gate is placed in the maintenance gate slot from top to bottom for maintenance, the ship lift lock head is blocked by water.

[0012] The working gate slot extends downwards along the bottom of the channel to a certain depth, and when the working gate is adjusted from the lowest position to the highest position, the bottom of the working gate is always lower than the bottom of the channel.

[0013] The lifting device for the working gate includes supports on the left and right sides of the upper end of the working gate. Each support is equipped with a first hydraulic cylinder at its top. The lower end of the first hydraulic cylinder is hinged to the working gate through multiple connecting rods that are hinged in sequence.

[0014] The locking device for the working gate includes a locking plate, the upper end of which is rotatably mounted on the working gate via a central shaft, and the lower end of which is hinged to a second hydraulic cylinder on the working gate. When the second hydraulic cylinder extends, the locking plate is pushed into the water-blocking locking groove; when the second hydraulic cylinder retracts, the locking plate retracts back to the working gate.

[0015] The inner side of the locking plate has a vertical plane, which limits the locking plate to the vertical plate on the working gate when it is extended; while the bottom surface of the corresponding water-blocking locking groove that contacts the locking plate is an outward and downward inclined surface.

[0016] The working door is equipped with a pressurized water-stopping system, which consists of inner and outer pressurized water-stopping systems. When adjusting the position of the working door, the outer pressure is released, and the outer pressure is restored after the adjustment is completed.

[0017] The gate drainage system includes a drainage pipe with its inlet located at the bottom between the working gate slot and the maintenance gate slot. The outlet of the drainage pipe extends into the collection well. A trash rack is installed at the inlet of the drainage pipe. A first energy dissipation valve, a first maintenance valve, and a first working valve are installed at intervals on the drainage pipe. The first energy dissipation valve, the first maintenance valve, and the first working valve are controlled by the drainage system control system.

[0018] The bottom drainage system includes a drain pipe, which is pumped by a drain pump. The drain pipe is equipped with a second energy dissipation valve, a second maintenance valve, and a second working valve. The second energy dissipation valve, the second maintenance valve, and the second working valve are controlled by the drainage system control system.

[0019] The working door maintenance and locking device includes a third hydraulic cylinder, which is arranged on the left and right sides in the maintenance and locking slots at the top of the working door slot. The third hydraulic cylinder is connected to the locking beam. During normal navigation, the locking beam retracts to the rear of the maintenance and locking slot and extends after the working door is raised to the maintenance position to fix the working door in the maintenance position.

[0020] A method for impounding water at the lock head of a ship lift, applicable to situations where the water level in a ship lift channel changes rapidly, includes the following steps:

[0021] Increased water barrier height:

[0022] Step 1): When the channel water level gauge of the ship lift detects that the channel water level exceeds the adaptability range of the working gate, it is determined that the working gate should be raised to the previous water-blocking locking slot to block the water at the gate head.

[0023] Step 2): Activate the pressurized water-stopping system to release the pressure on the outer water stop;

[0024] Step 3): Operate the lifting device of the working gate to raise the working gate to the middle position of the current water-blocking locking groove, operate the working gate locking device to disengage the locking plate of the working gate locking device from the current water-blocking locking groove, and release the working gate lock.

[0025] Step 4): Operate the working gate lifting device to raise the working gate to the middle position of the previous water-blocking locking slot, operate the working gate locking device to make the locking plate of the working gate locking device extend into the water-blocking locking slot, operate the working gate lifting device to lower the working gate to the corresponding elevation of the water-blocking locking slot, and the locking takes effect when the locking plate makes contact with the water-blocking locking slot.

[0026] Step 5): Activate the pressurized water-stopping system to restore the external water-stopping pressure;

[0027] Reduced water barrier height:

[0028] Step 1): When the water level gauge of the ship lift detects that the water level in the channel has dropped below the range of the working gate, it is determined that the water gate should be lowered to the next water-blocking locking slot to block the water at the gate head.

[0029] Step 2): Activate the pressurized water-stopping system to release the pressure on the outer water stop;

[0030] Step 3): Operate the lifting device of the working gate to raise the working gate to the middle position of the current water-blocking locking groove, operate the working gate locking device to disengage the locking plate of the working gate locking device from the current water-blocking locking groove, and release the working gate lock.

[0031] Step 4): Operate the working gate lifting device to lower the working gate to the middle position of the next water-blocking locking slot, operate the working gate locking device to make the locking plate of the working gate locking device extend into the water-blocking locking slot, operate the working gate lifting device to lower the working gate to the corresponding elevation of the water-blocking locking slot, and the locking takes effect when the locking plate makes contact with the water-blocking locking slot.

[0032] Step 5): Activate the pressurized water-stopping system to restore the external water-stopping pressure;

[0033] Inspect the water barrier:

[0034] Step 1): When the working door of the ship lift needs to be inspected and maintained, the gate head is blocked by raising the working door to the maintenance locking slot and lowering the maintenance door.

[0035] Step 2): Operate the maintenance door hoist to the top of the correctly numbered maintenance beam door, lift one section of the maintenance beam door using the maintenance door hoist and lower it into the maintenance door slot, and operate the maintenance door hoist to disconnect the door connecting device from the maintenance beam door;

[0036] Step 3): Repeat Step 2) until the appropriate number of maintenance stacked beam doors are lowered into the maintenance door slot, keeping the maintenance door opening and closing mechanism connected to the uppermost maintenance stacked beam door.

[0037] Step 4): Use the gate drainage system to drain all the water between the working gate and the maintenance gate. The water is discharged into the collection well of the bottom drainage system and then pumped out to the waterway through the bottom drainage system.

[0038] Step 5): Activate the pressurized water-stopping system to release all the pressure on the inner and outer water stops;

[0039] Step 6): Operate the lifting device of the working gate to raise the working gate to the middle position of the water-blocking locking groove, operate the working gate locking device to make the locking plate of the working gate locking device disengage from the water-blocking locking groove where it is currently located, and release the working gate from the lock.

[0040] Step 7): Operate the lifting device of the working gate to raise the working gate to the highest position. Then, use the lifting machinery to remove multiple connecting rods, extend the first hydraulic cylinder and connect it directly to the working gate. Then, use the first hydraulic cylinder to continue to raise the working gate to the maintenance locking slot. At this time, drive the third hydraulic cylinder, which drives the locking beam to extend to the bottom of the working gate for support, thereby completing the locking of the working gate in the maintenance position.

[0041] The height h of the working gate 工 The maximum fluctuation h of the channel water level 变 Decision, h 工 =h 变 +h 低 h 低The height is set to ensure normal navigation and water-blocking safety when the work gate is at its lowest water-blocking locking slot.

[0042] The number n of the water-blocking locking grooves is determined by the maximum fluctuation h of the channel water level. 变 It is decided that n=h 变 / h1. Number of sections n of the overlapping beam gate to be inspected 检 The depth h of the channel 航 Decision, n 检 =h 航 / h2, where h2 is the appropriate height of each stacked beam as determined by the stacked beam door design specifications.

[0043] This invention provides a gate head water-blocking device and method suitable for rapid changes in water level in ship lift channels, which has the following technical advantages:

[0044] 1) By setting up working gates, maintenance gates, working gate slots, maintenance gate slots, maintenance gate storage, maintenance gate hoists, gate-to-gate drainage systems, bottom drainage systems, and working gate maintenance locking devices, the water-blocking height of the gate head water-blocking device can be conveniently and quickly adjusted when the water level in the waterway changes rapidly. It features a compact and reasonable structure, complete functions, and a high degree of automation.

[0045] 2) Compared to the original lock gate, the working gate slot in this application extends a certain depth into the bottom of the channel. The size of the working gate ensures that the bottom of the gate remains below the bottom of the channel when adjusted from the lowest to the highest position. Designing the gate as a single unit and using hydraulic cylinders to raise or lower it greatly improves the efficiency of adjusting the gate's water level.

[0046] 3) This device can continuously raise or lower the locking position of the working gate, and can quickly adjust the working gate to a suitable position, improving the ability to cope with changes in water level in the waterway.

[0047] 4) By setting up a maintenance and locking device for the working gate, the working gate can be raised to the maintenance position and locked after the water body in the channel is blocked by the maintenance gate, which facilitates the maintenance of the working gate and the lock head channel and improves the reliability of equipment operation.

[0048] 5) The pressurized water-stop system is equipped with two layers of pressurized water-stops, both internally and externally. This improves the reliability of the water-stop seal during normal navigation and allows for the release of pressure from one layer of water-stop when adjusting the water-blocking height of the gate, reducing wear on the water-stop during gate adjustment. Furthermore, the two water-stops serve as backups for each other; if one water-stop fails, the other can independently complete the sealing process. Attached Figure Description

[0049] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0050] Figure 1 This is a top view of the present invention.

[0051] Figure 2 This is a side view of the present invention.

[0052] Figure 3 This is a schematic diagram of the inter-door drainage system in this invention.

[0053] Figure 4 This is a schematic diagram of the state when the maintenance door is blocked by water in this invention.

[0054] Figure 5 This is a schematic diagram of the working gate blocking water in this invention.

[0055] Figure 6 This is a front view of the upper half of the working door in this invention.

[0056] Figure 7 This is a front view of the main body of the working door in this invention.

[0057] Figure 8 This is a schematic diagram of the locked state of the working gate locking device in this invention.

[0058] Figure 9 This is a schematic diagram of the retracted state of the working gate locking device in this invention.

[0059] Figure 10 This is a layout diagram of the bottom drainage system in this invention (a represents the bottom of the working gate slot, and b represents the bottom of the waterway).

[0060] Figure 11 for Figure 10 A schematic diagram of the bottom drainage system.

[0061] Figure 12 This is a top view of the working door maintenance locking device in this invention.

[0062] Figure 13 This is a schematic diagram of the working gate in the maintenance locking position (the hydraulic cylinder connecting rod has been removed) in this invention (a represents the bottom of the working gate slot, and b represents the bottom of the channel).

[0063] Figure 14 This is a schematic diagram of the working gate in the highest water-blocking position (locking position 6) of the present invention (a represents the bottom of the working gate slot, and b represents the bottom of the waterway).

[0064] Figure 15 This is a schematic diagram of the working gate in the present invention when the working gate is at the lowest water blocking position (locking position 1) (a represents the bottom of the working gate slot, b represents the bottom of the channel).

[0065] In the diagram: 1. Working door; 2. Inspection door; 3. Working door slot; 4. Inspection door slot; 5. Inspection door lock; 6. Inspection door hoist; 7. Door-to-door drainage system; 8. Bottom drainage system; 9. Working door inspection locking device; 10. Control room; 1-1. Working door; 1-2. Working door lifting device; 1-3. Working door locking device; 1-4. Pressurized water-stopping system; 1-5. Support 1-2-1; 1-2-2. First hydraulic cylinder; 1-2-3. Connecting rod; 1-4-1. Locking plate; 1-4-2. Second hydraulic cylinder; [The last part is incomplete and likely refers to a vertical structure.] Straight plate 1-4-3, inspection stacked beam door 2-1, water blocking locking groove 3-1, inspection locking groove 3-2, drain pipe 7-1, trash rack 7-2, first energy dissipation valve 7-3, first inspection valve 7-4, first working valve 7-5, drain system control system 7-6, drain pipe 8-1, drain pump P8-2, second energy dissipation valve 8-3, second inspection valve 8-4, second working valve 8-5, drain system control system 8-6, water collection well 8-7, third oil cylinder 9-1, locking beam 9-2. Detailed Implementation

[0066] like Figure 1 As shown, a gate head water-blocking device suitable for rapid changes in water level in a ship lift channel includes a working gate 1, a maintenance gate 2, a working gate slot 3, a maintenance gate slot 4, a maintenance gate storage 5, a maintenance gate opening and closing machine 6, a gate-to-gate drainage system 7, a bottom drainage system 8, a working gate maintenance locking device 9, and a control room 10.

[0067] The device extends outward from the ship lift compartment and includes a bottom drainage system 8, a working gate slot 3, a gate-to-gate drainage system 7, and a maintenance gate slot 4. A maintenance gate hoist 6 and a maintenance gate storage unit 5 are located at the top of the lock head channel. A working gate maintenance locking device 9 is located at the top of the working gate slot 3 (the working gate slot is in the middle section; the upper section is the maintenance space, and the lower end is the water collection well).

[0068] The working door 1 includes a working gate 1-1 with a reclining door 1-3, a working gate lifting device 1-2, a working gate locking device 1-4, and a pressurized water-stopping system 1-5.

[0069] The working gate 1-1 is equipped with hydraulic opening and closing mechanisms, locking devices, hydraulic pump stations, and other equipment for the reclining gate 1-3. Normally, the reclining gate 1-3 on the working gate 1-1 is in a closed state. After the ship compartment is connected to the lock head, the reclining gate 1-3 opens to form a passage for ships. The reclining gate 1-3 can adapt to water level fluctuations of one locking height h1. When the water level fluctuation exceeds the adaptability of the reclining gate 1-3, the position of the working gate 1-1 is readjusted by raising or lowering one locking height.

[0070] The adjustment of the working gate 1-1 is carried out under water conditions. The lifting and lowering of the working gate 1-1 is carried out through the working gate lifting device 1-2.

[0071] The lifting device 1-2 for the working gate includes supports 1-2-1 on the left and right sides of the upper end of the working gate 1-1. Each support 1-2-1 is equipped with a first hydraulic cylinder 1-2-2 at its top. The lower end of the first hydraulic cylinder 1-2-2 is hinged to the working gate 1-1 through a plurality of connecting rods 1-2-3 that are hinged in sequence.

[0072] The stroke of the first hydraulic cylinder 1-2-2 matches the stroke of the working gate as it moves from locking position 1 to locking position 6.

[0073] The working gate locking device 1-4 is arranged on both sides of the working gate 1-1. The corresponding working gate slot 3 has n water-blocking locking slots 3-1 with a spacing of h1 on both sides from top to bottom. After the working gate 1-1 is adjusted, it is locked. The working gate locking device 1-4 and the water-blocking locking slots 3-1 cooperate to lock the position of the working gate 1.

[0074] The working gate locking device 1-4 includes a locking plate 1-4-1. The upper end of the locking plate 1-4-1 is rotatably mounted on the working gate 1-1 via a central shaft, and the lower end of the locking plate 1-4-1 is hinged to the second hydraulic cylinder 1-4-2 on the working gate 1-1. When the second hydraulic cylinder 1-4-2 extends, the locking plate 1-4-1 is pushed into the water-blocking locking groove 3-1. When the second hydraulic cylinder 1-4-2 retracts, the locking plate 1-4-1 retracts back to the working gate 1-1.

[0075] The locking plate 1-4-1 here has a vertical plane on its inner side. When the locking plate 1-4-1 is extended, it can be limited by the vertical plate 1-4-3 on the working gate 1-1. The bottom surface of the corresponding water-blocking locking groove 3-1 that contacts the locking plate 1-4-1 is an outward and downward inclined surface 3-1-1, which can be fully locked after being in place.

[0076] The pressurized water-stopping system 1-5 consists of two layers of pressurized water-stopping, inner and outer. When adjusting the position of the working gate 1-1, the outer pressure is released, and the outer pressure is restored after the adjustment is completed. The two water-stopping systems can serve as backups for each other; if one water-stopping system fails, the other water-stopping system can independently complete the sealing.

[0077] The maintenance gate 2 includes multiple maintenance stacked beam gates 2-1. Their main function is to block water when the working gate 1 requires maintenance. An appropriate number of maintenance stacked beam gates 2-1 are selected based on the duration of the shutdown and the channel water level and stacked within the maintenance gate slot 4. These gates are used to block water at the lock head of the ship lift during maintenance of the working gate 1. The raising and lowering of the maintenance stacked beam gates 2-1 are carried out by the maintenance gate hoist 6. When not in use, the maintenance stacked beam gates 2-1 are stored in the maintenance gate storage 5.

[0078] The maintenance gate opening and closing machine 6 is a two-way bridge machine arranged on a concrete frame. The bridge machine can run in the direction of water flow and in the direction perpendicular to the water flow. The track is laid on two-line steel structure track beams, and the steel structure track beams are erected on the top of the concrete column.

[0079] The gate drainage system 7 includes a drainage pipe 7-1. The inlet of the drainage pipe 7-1 is located at the bottom between the working gate slot 3 and the maintenance gate slot 4, and is used to drain all the water between the working gate 1 and the maintenance gate 2. The outlet of the drainage pipe 7-1 extends into the collection well 8-7. A trash rack 7-2 is installed at the inlet of the drainage pipe 7-1. A first energy dissipation valve 7-3, a first maintenance valve 7-4, and a first working valve 7-5 are installed on the drainage pipe 7-1 at intervals. The first energy dissipation valve 7-3, the first maintenance valve 7-4, and the first working valve 7-5 are controlled by the drainage system control system 7-6.

[0080] The bottom drainage system 8 includes a drain pipe 8-1, which is pumped by a drainage pump 8-2. A second energy-dissipating valve 8-3, a second maintenance valve 8-4, and a second working valve 8-5 are installed on the drain pipe 8-1. These valves are controlled by a drainage system control system 8-6. The inlet of the drain pipe 8-1 is located in a collection well 8-7, and the outlet of the drain pipe 8-1 is located in the external waterway.

[0081] The bottom drainage system 8 can be arranged in multiple sets according to the drainage needs on site, and an appropriate number of drainage pumps 8-7 can be started according to the water level of the collection well 8-7.

[0082] The working door maintenance locking device 9 includes a third hydraulic cylinder 9-1, which is connected to a locking beam 9-2. The corresponding working door slot 3 is provided with a maintenance locking slot 3-2. During normal navigation, the locking beam 9-2 retracts to the rear of the maintenance locking slot 3-2 and extends after the working door 1-1 is raised to the maintenance position, fixing the working door 1-1 in the maintenance position.

[0083] The number n of the water-blocking locking slots 3-1 arranged at intervals from top to bottom on the working gate slot 3 is determined by the maximum fluctuation h of the channel water level. 变 It is decided that n=h 变 / h1.

[0084] Inspection of stacked beam door 2-1, number of sections n 检 The depth h of the channel 航 Decision, n 检 =h 航 / h2, where h2 is the appropriate height of each stacked beam as determined by the stacked beam door design specifications.

[0085] The height h of the working gate 1-1 工 The maximum fluctuation h of the channel water level变 Decision, h 工 =h 变 +h 低 h 低 The height at which the working gate 1-1 is positioned in the lowest water-blocking locking slot 3-1 ensures normal navigation and water-blocking safety.

[0086] Taking a channel water level variation of 62m to 74m and a minimum allowable water depth of 4m for vessel passage as an example:

[0087] The reclining gates 1-3 can accommodate water level variations at a locking height of h1, where h1 = 2m.

[0088] The upper part of the working gate is reserved with a safety water barrier height of 1m, and the lower part is 1m below the bottom of the waterway.

[0089] Maximum channel water level fluctuation h 变 =74m-62m=12m;

[0090] The number of water-blocking locking slots for the work gate is 3-1, n = h 变 / h1=12 / 2=6; that is, the working door slot has a total of 6 lock slots, and the height of the upper and lower adjacent lock slots is h1=2m. The 6 lock slots are numbered 1-6 from bottom to top.

[0091] The depth of the navigation channel at the lock head is 24m, and the appropriate height of each stacked beam is h2=3m.

[0092] Then the number of sections n of the stacked beam door 2-1 to be inspected 检 =h 航 / h2=24m / 3m=8; that is, the inspection stacked beam door 2-1 has a total of 8 sections, numbered 1-8.

[0093] The height h of the work gate 1-1 工 The maximum fluctuation h of the channel water level 变 Decision, h 工 =h 变 +h 低 h 低 It equals the minimum navigable water depth required by the ship lift + a water level fluctuation h1 + the safety water-blocking height of the spare working gate.

[0094] The height h of the work gate 1-1 工 =h 变 +h 低 =12m+4+1+1=18m.

[0095] The height of the bottom of the working gate slot from the bottom of the channel is greater than the height of the No. 1 to No. 6 locking slots plus a certain reserved height.

[0096] Example 1:

[0097] When the channel water level changes rapidly from 65m to 66m, and the channel water level detection system determines that the channel water level will continue to rise, it is necessary to adjust the height of the lock slot by one position to adjust the position of the working gate 1-1.

[0098] Step 1): Run the pressurized water-stopping system 1-5 to release the pressure on the outer water stop.

[0099] Step 2): Operate the lifting device 1-2 of the working gate to raise the working gate 1-1 to the middle position of the locking slot 2, and operate the locking device 1-4 of the working gate to disengage the locking plate 1-4-1 of the locking device 1-4 from the locking slot 2, thereby releasing the lock on the working gate 1-1.

[0100] Step 3): Operate the lifting device 1-2 to raise the working gate 1-1 to the middle position of the locking slot 3. Operate the locking device 1-4 to extend the locking plate 1-4-1 of the locking device 1-4 into the locking slot 3. Operate the lifting device 1-2 to lower the working gate 1-1 to the corresponding elevation of the locking slot 3. The locking will take effect when the locking plate 1-4-1 makes contact with the bottom surface of the locking slot 3.

[0101] Step 4): Run the pressurized water-stopping system 1-5 to restore the outer water-stopping pressure.

[0102] Example 2:

[0103] When the water level in the channel changes rapidly from 71m to 70m, and the water level detection system determines that the water level will continue to drop, it is necessary to adjust the height of the lock slot downwards to adjust the position of the working gate 1-1.

[0104] Step 1): Run the pressurized water-stopping system 1-5 to release the pressure on the outer water stop.

[0105] Step 2): Operate the lifting device 1-2 of the working gate to raise the working gate 1-1 to the middle position of the locking slot 5. Operate the locking device 1-4 of the working gate to disengage the locking plate 1-4-1 of the locking device 1-4 from the locking slot 5, thereby releasing the lock on the working gate 1-1.

[0106] Step 3): Operate the lifting device 1-2 of the working gate to lower the working gate 1-1 to the middle position of the locking slot 4. Operate the locking device 1-4 of the working gate so that the locking plate 1-4-1 of the locking device 1-4 extends into the locking slot 4. Operate the lifting device 1-2 of the working gate to lower the working gate 1-1 to the corresponding elevation of the locking slot 4. The locking takes effect when the locking plate 1-4-1 of the locking device 1-4 of the working gate comes into contact with the bottom surface of the locking slot 4.

[0107] Step 4): Run the pressurized water-stopping system to restore the pressure of the outer water stop.

[0108] Example 3:

[0109] When the ship lift needs to be shut down for a long time for maintenance, the maintenance door 2 should be lowered to block the water and the working door 1 should be raised to the maintenance position and locked.

[0110] Step 1): Operate the maintenance door hoist 6 to the top of the No. 1 maintenance beam door, lift one section of the maintenance beam door 2-1 through the maintenance door hoist 6 and lower it into the maintenance door slot 4, and operate the door connecting device of the maintenance door hoist 6 to disengage from the maintenance beam door 2-1.

[0111] Step 2): Repeat Step 1) until all 8 sections of the maintenance stacked beam door 2-1 are placed into the maintenance door slot 4 and stacked, keeping the door connecting device of the maintenance door opening and closing machine 6 connected to the maintenance stacked beam door 2-1; here the door connecting device is connected to the topmost maintenance stacked beam door 2-1, so that maintenance and water blocking operations can be carried out at any time.

[0112] Step 3): Use the gate drainage system 7 to drain all the water between the working gate 1 and the maintenance gate 2. The water is discharged into the collection well 8-7 of the bottom drainage system 8, and then pumped to the waterway through the bottom drainage system 8.

[0113] Step 4): Run the pressurized water-stopping system 1-5 to release all the pressure on the inner and outer water stops.

[0114] Step 5): Operate the lifting device 1-2 to raise the working gate 1-1 until the locking plate 1-4-1 is in the middle of the locking slot. Operate the locking device 1-4 to disengage the locking plate 1-4-1 from the locking slot and release the lock on the working gate 1-1.

[0115] Step 6): After the working gate lifting device 1-2 is used to lift the working gate 1-1 to the highest position, the multiple connecting rods 1-2-3 are removed using the lifting machinery. The hydraulic cylinder 1-2-2 is extended and directly connected to the working gate 1-1. Then, the hydraulic cylinder 1-2-2 is used to continue lifting the working gate 1-1 to the maintenance locking slot 3-2. At this time, the third hydraulic cylinder 9-1 is driven. The third hydraulic cylinder 9-1 drives the locking beam 9-2 to extend to the bottom of the working gate 1-1 for support, thereby completing the locking of the working gate 1-1 in the maintenance position.

Claims

1. A gate head water-blocking device suitable for rapid changes in water level in a ship lift channel, characterized in that: Includes working door (1), maintenance door (2), working door slot (3), maintenance door slot (4), maintenance door storage (5), maintenance door opening and closing machine (6), door drainage system (7), bottom drainage system (8), and working door maintenance locking device (9); Among them, the bottom drainage system (8), the working door slot (3), the door-to-door drainage system (7), and the maintenance door slot (4) are arranged outward from the ship lift cabin section respectively; The maintenance gate hoist (6) and maintenance gate storage (5) are arranged on the top of the gate head channel; The maintenance locking device (9) for the working door is arranged at the top of the working door slot (3); The working door (1) includes a working door (1-1) with a reclining door (1-3). The working door (1-1) is placed in the working door slot (3) and its upper end is raised and lowered by the working door lifting device (1-2). The working door (1-1) is provided with a working door locking device (1-4) on the left and right sides. The corresponding working door slot (3) is provided with multiple sets of water-blocking locking slots (3-1) at intervals along the height direction. The working door locking device (1-4) locks or unlocks with the corresponding water-blocking locking slot (3-1). The maintenance gate (2) includes a multi-section maintenance stacked beam gate (2-1). The maintenance stacked beam gate (2-1) is raised and lowered by the maintenance gate opening and closing machine (6). When the multi-section maintenance stacked beam gate (2-1) is placed in the maintenance gate slot (4) from top to bottom for maintenance, the ship lift lock head is blocked by water. The working gate slot (3) extends downward along the bottom of the channel to a certain depth. When the working gate (1-1) is adjusted from the lowest position to the highest position, the bottom of the working gate (1-1) is always lower than the bottom of the channel. The lifting device (1-2) for the working gate includes supports (1-2-1) set on the left and right sides of the upper end of the working gate (1-1). Each support (1-2-1) is equipped with a first hydraulic cylinder (1-2-2) at its top. The lower end of the first hydraulic cylinder (1-2-2) is hinged to the working gate (1-1) through multiple connecting rods (1-2-3) that are hinged in sequence. The working gate locking device (1-4) includes a locking plate (1-4-1). The upper end of the locking plate (1-4-1) is rotatably mounted on the working gate (1-1) via a central shaft. The lower end of the locking plate (1-4-1) is hinged to the second hydraulic cylinder (1-4-2) on the working gate (1-1). When the second hydraulic cylinder (1-4-2) extends, the locking plate (1-4-1) is pushed into the water-blocking locking groove (3-1). When the second hydraulic cylinder (1-4-2) retracts, the locking plate (1-4-1) retracts back to the working gate (1-1). The locking plate (1-4-1) has a vertical plane on its inner side. When the locking plate (1-4-1) is extended, it is limited by the vertical plate (1-4-3) on the working gate (1-1). The bottom surface of the corresponding water-blocking locking groove (3-1) that contacts the locking plate (1-4-1) is an outward and downward inclined surface (3-1-1). The gate drainage system (7) includes a drain pipe (7-1). The inlet of the drain pipe (7-1) is located at the bottom between the working gate slot (3) and the maintenance gate slot (4). The outlet of the drain pipe (7-1) extends into the collection well (8-7). A trash rack (7-2) is provided at the inlet of the drain pipe (7-1). A first energy dissipation valve (7-3), a first maintenance valve (7-4), and a first working valve (7-5) are installed at intervals on the drain pipe (7-1). -4) The first working valve (7-5) is controlled by the drainage system control system (7-6); the bottom drainage system (8) includes a drain pipe (8-1), the drain pipe (8-1) is pumped by a drain pump (8-2), and the drain pipe (8-1) is equipped with a second energy dissipation valve (8-3), a second maintenance valve (8-4), and a second working valve (8-5). The second energy dissipation valve (8-3), the second maintenance valve (8-4), and the second working valve (8-5) are controlled by the drainage system control system (8-6).

2. The gate head water-blocking device for rapid water level changes in a ship lift channel according to claim 1, characterized in that: The working door (1) is equipped with a pressurized water-stopping system (1-5), which consists of two pressurized water-stopping systems, inner and outer. When adjusting the position of the working door (1-1), the outer pressure is released, and the outer pressure is restored after the adjustment is completed.

3. A gate head water-blocking device suitable for rapid water level changes in a ship lift channel, as described in claim 2, characterized in that: The working door maintenance locking device (9) includes a third hydraulic cylinder (9-1), which is arranged on the left and right sides in the maintenance locking groove (3-2) at the top of the working door groove (3). The third hydraulic cylinder (9-1) is connected to the locking beam (9-2). During normal navigation, the locking beam (9-2) retracts to the back of the maintenance locking groove (3-2) and extends after the working door (1-1) is raised to the maintenance position, fixing the working door (1-1) in the maintenance position.

4. The method for using a lock head water-blocking device suitable for rapid changes in water level in a ship lift channel, as described in claim 3, includes the following steps: Increased water barrier height: Step 1): When the channel water level gauge of the ship lift detects that the channel water level exceeds the adaptability range of the working gate (1-1), it is determined that the working gate (1-1) will be raised to the previous water-blocking locking slot (3-1) to block the water at the gate head. Step 2): Activate the pressurized water-stopping system (1-5) to release the pressure on the outer water stop; Step 3): Operate the lifting device (1-2) to raise the working gate (1-1) to the middle position of the current water-blocking locking groove (3-1), and operate the working gate locking device (1-4) to disengage the locking plate (1-4-1) of the working gate locking device (1-4) from the current water-blocking locking groove, thereby unlocking the working gate (1-1). Step 4): Operate the working gate lifting device (1-2) to raise the working gate (1-1) to the middle position of the previous water-blocking locking groove (3-1). Operate the working gate locking device (1-4) so ​​that the locking plate (1-4-1) of the working gate locking device (1-4) extends into the water-blocking locking groove (3-1). Operate the working gate lifting device (1-2) to lower the working gate (1-1) to the corresponding elevation of the water-blocking locking groove (3-1). The locking takes effect when the locking plate (1-4-1) makes contact with the water-blocking locking groove (3-1). Step 5): Activate the pressurized water-stopping system (1-5) to restore the external water-stopping pressure; Reduced water barrier height: Step 1): When the channel water level gauge of the ship lift detects that the channel water level has dropped below the range of the working gate (1-1), it is determined that the gate (1-1) should be lowered to the next water-blocking locking slot (3-1) to block the water at the gate head. Step 2): Activate the pressurized water-stopping system (1-5) to release the pressure on the outer water stop; Step 3): Operate the lifting device (1-2) to raise the working gate (1-1) to the middle position of the current water-blocking locking groove (3-1), and operate the working gate locking device (1-4) to disengage the locking plate (1-4-1) of the working gate locking device (1-4) from the current water-blocking locking groove (3-1) and release the working gate (1-1) from the lock. Step 4): Operate the working gate lifting device (1-2) to lower the working gate (1-1) to the middle position of the next water-blocking locking groove (3-1). Operate the working gate locking device (1-4) so ​​that the locking plate (1-4-1) of the working gate locking device (1-4) extends into the water-blocking locking groove (3-1). Operate the working gate lifting device (1-2) to lower the working gate (1-1) to the corresponding elevation of the water-blocking locking groove (3-1). When the locking plate (1-4-1) and the water-blocking locking groove (3-1) make contact, the locking takes effect. Step 5): Activate the pressurized water-stopping system (1-5) to restore the external water-stopping pressure; Inspect the water barrier: Step 1): When the working door (1) of the ship lift needs to be inspected and maintained, the gate head is blocked by raising the working door (1-1) to the maintenance locking slot (3-2) and lowering the maintenance door (2); Step 2): Run the maintenance door hoist (6) to the top of the correctly numbered maintenance stacked beam door (2-1), lift one section of the maintenance stacked beam door (2-1) through the maintenance door hoist (6) and lower it into the maintenance door slot (4), and operate the maintenance door hoist (6) to disconnect the door connecting device from the maintenance stacked beam door (2-1); Step 3): Repeat step 2) until the appropriate number of maintenance stacked beam doors (2-1) are placed into the maintenance door slot (4), keeping the maintenance door opening and closing machine (6) connected to the uppermost maintenance stacked beam door (2-1); Step 4): Use the gate drainage system (7) to drain all the water between the working gate (1) and the maintenance gate (2). The water is discharged into the collection well (8-7) of the bottom drainage system (8), and then pumped to the waterway through the bottom drainage system (8). Step 5): Activate the pressurized water-stopping system (1-5) to release all the pressure on the inner and outer water stops; Step 6): Operate the working gate lifting device (1-2) to lift the working gate (1-1) to the middle position of the water-blocking locking groove (3-1), operate the working gate locking device (1-4) to make the locking plate (1-4-1) of the working gate locking device (1-4) disengage from the water-blocking locking groove (3-1) where it is currently located, and release the working gate (1-1) from the lock. Step 7): Operate the lifting device (1-2) of the working gate to raise the working gate (1-1) to the highest position. Then, use the lifting machinery to remove the multiple connecting rods (1-2-3), extend the first hydraulic cylinder (1-2-2) and connect it directly to the working gate (1-1). Then, use the first hydraulic cylinder (1-2-2) to continue to raise the working gate (1-1) to the maintenance locking slot (3-2). At this time, drive the third oil cylinder (9-1). The third oil cylinder (9-1) drives the locking beam (9-2) to extend to the bottom of the working gate (1-1) for support, thereby completing the locking of the working gate (1-1) in the maintenance position.

5. The method for using a lock head water-blocking device suitable for rapid changes in water level in a ship lift channel, as described in claim 4, is characterized in that: The height h of the working gate (1-1) 工 The maximum fluctuation h of the channel water level 变 Decision, h 工 =h 变 +h 低 h 低 The height required to ensure normal navigation and water-blocking safety when the working gate (1-1) is at its lowest point in the water-blocking locking groove (3-1).

6. The method for using a lock head water-blocking device suitable for rapid changes in water level in a ship lift channel, as described in claim 4, is characterized in that: The number n of the water-blocking locking grooves (3-1) is determined by the maximum fluctuation h of the channel water level. 变 It is decided that n=h 变 / h1; Number of sections n for inspecting the stacked beam door (2-1) 检 The depth h of the channel 航 Decision, n 检 =h 航 / h2, where h2 is the appropriate height of each stacked beam as determined by the stacked beam door design specifications.

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