A water-saving system for a hydraulic ship lift and its usage method

Abstract

The present invention relates to a water-saving system for a hydraulic ship lift and a method for using the same. The water-saving system for the hydraulic ship lift includes a plurality of vertical shafts (1) symmetrically arranged on both sides of the ship chamber, an extension main pipe (2), an extension branch pipe (3), a first branch pipe (4), a confluence main pipe (5), a second branch pipe (6), a water storage bin (7), and a control valve (8). The present invention has the advantages of achieving the goal of reducing the water consumption of the hydraulic ship lift, realizing the reuse of the water body in the vertical shaft (1), and enhancing the "green energy-saving" performance of the hydraulic ship lift; the system can reduce the water consumption of the hydraulic ship lift and improve the applicable range and economy of the hydraulic ship lift.

Description

Technical Field

[0001] The present invention belongs to the technical field of ship lift structures, and in particular relates to the technical field of a water-saving system for a hydraulic ship lift and its usage method. Background Art

[0002] The ship lift has been an important dam-crossing structure for navigation, used to overcome the navigation demand with high elevation differences, and is mainly divided into wire rope hoisting type, rack and pinion climbing type, pontoon type, and hydraulic ship lift. Among them, the hydraulic ship lift drives the ship chamber to move vertically by using the buoyancy change of pontoons in the shaft as the driving force to meet the requirement of ship dam-crossing. During the operation of the hydraulic ship lift, water is required to be obtained from the reservoir through the upstream water intake facility to meet the requirement of raising the water level in the shaft, which has the characteristic of "green energy-saving". However, water needs to be taken from the reservoir during operation, resulting in a certain water consumption problem, which is particularly prominent for reservoirs with small incoming water flow.

[0003] With the increasing intensity of inland river regulation, the long-term waterway grade is gradually improved, and the operating water head and water consumption of the hydraulic ship lift also increase accordingly. The problem of water resource shortage becomes increasingly prominent. Therefore, the water consumption problem of the hydraulic ship lift will also be a key factor that cannot be ignored. Summary of the Invention

[0004] Aiming at the disadvantage of water consumption of the hydraulic ship lift, the purpose of the present invention is to provide a water-saving system for a hydraulic ship lift and its usage method. The present invention aims to reduce the water consumption of the hydraulic ship lift, realize the reuse of the water body in the shaft, and enhance the "green energy-saving" advantage of the hydraulic ship lift.

[0005] The present invention is implemented by adopting the following technical solutions.

[0006] A water-saving system for a hydraulic ship lift, the water-saving system for the hydraulic ship lift described in the present invention includes a plurality of shafts 1 symmetrically arranged on both sides of the ship chamber, an extension main pipe 2, an extension branch pipe 3, a first branch pipe 4, a confluence main pipe 5, a second branch pipe 6, a water storage bin 7, and a control valve 8;

[0007] The first branch pipe 4, the confluence main pipe 5, the second branch pipe 6, the water storage bin 7, and the control valve 8 are grouped and layered according to different horizontal heights, and each group is a water-saving unit. The upper water-saving unit is arranged on the upper layer of the lower water-saving unit;

[0008] The water-saving system for the hydraulic ship lift further includes a water conveyance system 9 arranged at the lower part of the ship chamber;

[0009] The extension main pipe 2 is arranged at the lower part of the shaft 1, and the extension main pipe 2 is communicated with the bottom of the shaft 1;

[0010] The described water delivery system 9 includes a main water delivery pipe 10 and branch water delivery pipes 11; the branch water delivery pipes 11 are connected to the extended main pipe 2;

[0011] At the end of the extended main pipe 2, an extended branch pipe 3 parallel to the shaft 1 is provided;

[0012] At different heights of the extended branch pipe 3, several groups of water-saving units are connected; at the bottom of each water storage bin 7, a second branch pipe 6 is respectively connected; all the second branch pipes 6 are connected to the confluence main pipe 5; the first branch pipe 4 is arranged in the middle of the confluence main pipe 5, and the first branch pipe 4 is connected to the extended branch pipe 3; a control valve 8 is arranged on the first branch pipe 4;

[0013] All the second branch pipes 6 have the same horizontal height; the confluence main pipe 5 is arranged horizontally; the second branch pipes 6, the confluence main pipe 5 and the first branch pipe 4 are arranged at the same horizontal height.

[0014] Furthermore, in the present invention, the grouping and layering are arranged according to different horizontal heights, and the number of layers of the layering is greater than or equal to 2.

[0015] Furthermore, in the present invention, a normally closed valve 13 is arranged at the end of the main water delivery pipe 10; an inlet valve 12 is arranged at the front end of the main water delivery pipe 10.

[0016] Furthermore, in the present invention, the cross-sectional area of the water storage bin 7 is the same as the cross-sectional area of the shaft 1.

[0017] Furthermore, in the present invention, the height difference between the top surface of the uppermost water storage tank and the highest water level of the shaft is greater than or equal to the height of the water storage tank.

[0018] Furthermore, in the present invention, the height difference between the bottom surface of the lowermost water storage tank and the lowest water level of the shaft is greater than or equal to the height of the water storage tank.

[0019] Furthermore, in the present invention, the control valve 8 is an electric control valve and is connected to a computer terminal; liquid level sensors are arranged on the water storage bin 7 and the shaft 1.

[0020] Furthermore, in the present invention, a communicating pipe 14 is connected between the water storage bins 7 on the same layer, and the communicating pipes 14 on the same layer have the same horizontal height; the communicating pipes 14 are arranged at the bottom positions of the water storage bins 7 on the same layer to keep the liquid level heights of the water storage bins 7 on this layer consistent.

[0021] For the usage method of the above-mentioned water-saving system of a hydraulic ship lift, the usage method described in the present invention includes the method for the ascending of the ship chamber:

[0022] Step 1) Open the inlet valve 12 of the water conveyance system 9 and close the control valves 8 on each floor of the water-saving unit; the water level in the shaft 1 rises. When the water level in the shaft 1 rises to the highest level, the ship carrier is at the lowest position; at this time, close the inlet valve 12 of the water conveyance system 9; to make the ship carrier move upward, it is necessary to drain the water in the shaft 1.

[0023] Step 2) Open the control valve 8 of the uppermost water storage bin 7, and the water flows by gravity into the uppermost water storage bin 7 under the action of the pressure difference. When the uppermost water storage bin 7 is full, close the control valve 8 of this layer.

[0024] Step 3) Open the control valve 8 of the second-uppermost water storage bin 7, and the water flows by gravity into the second-uppermost water storage bin 7 under the action of the pressure difference. When the second-uppermost water storage bin 7 is full, close the control valve 8 of this layer.

[0025] Step 4) Perform the operation in this way until the lowermost water storage bin 7 is full and then close the control valve 8 of this layer.

[0026] Step 5) Due to the operations in Steps 2, 3, and 4, the water in the shaft 1 flows into the water storage bins 7 arranged from top to bottom in sequence. As the liquid level in the shaft 1 decreases, the upward movement of the ship carrier is completed.

[0027] Step 6) If there is still a large amount of water in the shaft 1 after Step 4 is completed, open the normally closed valve 13 provided at the end of the main water conveyance pipe 10 to drain the excess water to the downstream river channel to reach the lowest water level in the shaft 1, and at the same time make the ship carrier move upward to the highest position.

[0028] The usage method described in the present invention includes the method for making the ship carrier move downward:

[0029] Step 7) Open the control valve 8 of the lowermost water storage bin 7, and the water in the lowermost water storage bin 7 can flow by gravity into the interior of the shaft 1. After the water transfer is completed, close the control valve 8 of this layer.

[0030] Step 8) Open the control valve 8 of the second-lowermost water storage bin 7, and the water in the second-lowermost water storage bin 7 can flow by gravity into the interior of the shaft 1. After the water transfer is completed, close the control valve 8 of this layer.

[0031] Step 9) Perform the operation in this way until all the water in the uppermost water storage bin 7 flows into the shaft 1 and then close the control valve 8 of this layer.

[0032] Step 10) Due to the operations in Steps 7, 8, and 9, the water in the water storage bins 7 arranged from bottom to top flows into the shaft 1 in sequence; as the liquid level in the shaft 1 rises, the downward movement of the ship carrier is completed.

[0033] Step 11): If the water body in the shaft 1 is insufficient after Step 9 is completed, open the inlet valve 12 provided at the front end of the water delivery main pipe 10 to supplement the water body into the shaft 1 until the highest water level in the shaft 1 is reached, and at the same time lower the ship carriage to the lowest position.

[0034] The beneficial effects of the present invention are as follows: The present invention does not need to frequently use electricity to deliver or pump water to the shaft, and only relies on the cooperation of the gravity of water itself and atmospheric pressure to achieve the on-demand flow of the water body; the water storage tanks of the present invention can be arranged in two ways: independent tank body + connecting pipes and a confluence main pipe, and can be flexibly arranged according to the size of the civil engineering structure of the ship carriage, enhancing the applicability of the layout of the water storage tanks. In order to reduce the number of valve controls for the water-saving system of the water storage tanks in the present invention, only one control valve needs to be installed in each layer of the water storage tank for operation, which is convenient for construction and operation. By adjusting the number of layers of the water storage tank layout, the utilization rate of the water body in the shaft can be correspondingly increased, and in an ideal situation, the utilization rate can reach 100%. Considering the rationality of construction and operation, the system is initially arranged with three layers of water storage tanks, and the water utilization rate is 50%.

[0035] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. Description of the Drawings

[0036] Figure 1 is the three-dimensional view of Embodiment 1 of the present invention;

[0037] Figure 2 is the top view of Embodiment 1 of the present invention;

[0038] Figure 3 is the cross-sectional view of Embodiment 1 of the present invention;

[0039] Figure 4 is the calculation schematic diagram of the water-saving efficiency of the embodiment of the present invention.

[0040] The reference numerals in the drawings are: shaft (1), extension main pipe (2), extension branch pipe (3), first branch pipe (4), confluence main pipe (5), second branch pipe (6), water storage bin (7), control valve (8), water delivery system (9), water delivery main pipe (10), water delivery branch pipe (11), inlet valve (12), normally closed valve (13), connecting pipe (14). Specific Embodiments

[0041] See the attached Figure 1 , Figure 2 , Figure 3 , which shows a three-layer water-saving unit.

[0042] A water-saving system for a hydraulic ship lift. The water-saving system for a hydraulic ship lift according to the present invention includes a plurality of shafts 1 symmetrically arranged on both sides of the ship carriage, an extension main pipe 2, an extension branch pipe 3, a first branch pipe 4, a confluence main pipe 5, a second branch pipe 6, a water storage bin 7, and a control valve 8;

[0043] The described first branch pipe 4, confluence main pipe 5, second branch pipe 6, water storage bin 7, and control valve 8 are grouped and layered according to different horizontal heights. Each group is a water-saving unit, and the upper water-saving unit is arranged on the upper layer of the lower water-saving unit.

[0044] The water-saving system of the hydraulic ship lift further includes a water conveyance system 9 arranged at the lower part of the ship chamber.

[0045] The described extension main pipe 2 is arranged at the lower part of the shaft 1, and the extension main pipe 2 is communicated with the bottom of the shaft 1.

[0046] The water conveyance system 9 includes a water conveyance main pipe 10 and water conveyance branch pipes 11; the water conveyance branch pipes 11 are communicated with the extension main pipe 2.

[0047] An extension branch pipe 3 parallel to the shaft 1 is arranged at the end of the extension main pipe 2.

[0048] At different heights of the extension branch pipe 3, several groups of water-saving units are connected; at the bottom of each water storage bin 7, a second branch pipe 6 is respectively connected and arranged; all the second branch pipes 6 are connected with the confluence main pipe 5; the first branch pipe 4 is arranged in the middle of the confluence main pipe 5, and the first branch pipe 4 is connected with the extension branch pipe 3; a control valve 8 is arranged on the first branch pipe 4.

[0049] All the second branch pipes 6 have the same horizontal height; the confluence main pipe 5 is horizontally arranged; the second branch pipes 6, the confluence main pipe 5, and the first branch pipe 4 are arranged at the same horizontal height.

[0050] Furthermore, for the present invention, the grouping and layering according to different horizontal heights have the number of layers greater than or equal to 2.

[0051] Furthermore, for the present invention, a normally closed valve 13 is arranged at the end of the water conveyance main pipe 10; an inlet valve 12 is arranged at the front end of the water conveyance main pipe 10.

[0052] Furthermore, for the present invention, the cross-sectional area of the water storage bin 7 is the same as the cross-sectional area of the shaft 1.

[0053] Furthermore, for the present invention, the height difference between the top surface of the topmost water storage bin and the highest water level of the shaft is greater than or equal to the height of the water storage bin.

[0054] Furthermore, for the present invention, the height difference between the bottom surface of the lowermost water storage bin and the lowest water level of the shaft is greater than or equal to the height of the water storage bin.

[0055] Furthermore, for the present invention, the control valve 8 is an electric control valve and is connected to a computer terminal; liquid level sensors are arranged on the water storage bin 7 and the shaft 1.

[0056] Furthermore, in the present invention, a connecting pipe 14 is connected and arranged between the water storage bins 7 on the same layer, and the horizontal heights of the connecting pipes 14 on the same layer are the same; the connecting pipes 14 are arranged at the bottom positions of the water storage bins 7 on the same layer to keep the liquid level heights of the water storage bins 7 on this layer consistent.

[0057] As for the usage method of the water-saving system of the hydraulic ship lift as described above, the usage method described in the present invention includes the method for lifting the ship chamber upward:

[0058] Step 1) Open the inlet valve 12 of the water conveyance system 9 and close the control valves 8 of each layer of the water-saving unit; the water level inside the shaft 1 rises. When the water level inside the shaft 1 rises to the highest level, the ship chamber is at the lowest position; at this time, close the inlet valve 12 of the water conveyance system 9; to lift the ship chamber upward, it is necessary to drain the water inside the shaft 1.

[0059] Step 2) Open the control valve 8 of the uppermost water storage bin 7, and the water flows by gravity into the uppermost water storage bin 7 under the action of the pressure difference. When the uppermost water storage bin 7 is full, close the control valve 8 of this layer;

[0060] Step 3) Open the control valve 8 of the second uppermost water storage bin 7, and the water flows by gravity into the second uppermost water storage bin 7 under the action of the pressure difference. When the second uppermost water storage bin 7 is full, close the control valve 8 of this layer;

[0061] Step 4) Operate in this way until the lowermost water storage bin 7 is full and then close the control valve 8 of this layer;

[0062] Step 5) Due to the operations in Steps 2, 3, and 4, the water inside the shaft 1 sequentially flows into the water storage bins 7 arranged from top to bottom. As the liquid level inside the shaft 1 decreases, the upward movement of the ship chamber is completed;

[0063] Step 6) If there is still a large amount of water inside the shaft 1 after operating Step 4, open the normally closed valve 13 arranged at the end of the water conveyance main pipe 10 to drain the excess water to the downstream river channel to reach the lowest water level inside the shaft 1, and at the same time lift the ship chamber to the highest position.

[0064] The usage method described in the present invention includes the method for lowering the ship chamber downward:

[0065] Step 7) Open the control valve 8 of the lowermost water storage bin 7, and the water in the lowermost water storage bin 7 can flow by gravity into the inside of the shaft 1. After the water transfer is completed, close the control valve 8 of this layer;

[0066] Step 8) Open the control valve 8 of the second lowermost water storage bin 7, and the water in the second lowermost water storage bin 7 can flow by gravity into the inside of the shaft 1. After the water transfer is completed, close the control valve 8 of this layer;

[0067] Step 9) Operate in this way until all the water in the topmost water storage bin 7 flows into the shaft 1, and then close the control valve 8 of this layer;

[0068] Step 10) Due to the operations in Steps 7, 8, and 9, the water in the water storage bins 7 arranged from bottom to top flows into the shaft 1 in sequence; as the liquid level in the shaft 1 rises, the ship chamber descends;

[0069] Step 11) If the water in the shaft 1 is insufficient after Step 9 is operated, open the water inlet valve 12 provided at the front end of the water conveyance main pipe 10 to supplement the water into the shaft 1 to reach the highest water level in the shaft 1, and at the same time make the ship chamber descend to the lowest position.

[0070] Through the analysis of two operating states, the water storage bin has a water storage effect when the ship chamber descends, and a water replenishing effect when the ship chamber ascends, and the water storage bin can operate at full load in both states, reducing the water consumption of the hydraulic ship lift to more than 50% of the original design, improving the water resource utilization efficiency and the application scope of the hydraulic ship lift, and being more economical than the current hydraulic ship lift.

[0071] As Figure 4 shown, the water-saving efficiency of the present invention can be calculated according to the simplified diagram shown in the figure (the legend is three layers). The height difference between the top of the third-layer water storage bin and the highest water level of the shaft is h, and the height difference between the bottom plate of the first-layer water storage bin and the lowest water level of the shaft is h. Since the cross-sectional area of the water storage bin is the same as that of the shaft, the amount of water in the shaft and the water storage bin is linearly related. The water utilization rate in the legend is 3h / 6h = 50%. By adjusting the spacing between each layer of water storage bins and the height of the water storage bin, the maximum theoretical water reuse rate is nh / nh = 100% (n is the number of layers of water storage bins, and the vertical spacing is considered infinitesimal). At the same time, the structure of the water storage bin can be adjusted, and the way of arranging water storage pools on each layer is adopted to replace the way of arranging independent water storage bins in the legend, and the water storage bin can be arranged inside or outside the lock chamber according to the width of the lock chamber, improving the layout flexibility of the water-saving system.

[0072] Combined with the theoretical analysis, the water reuse rate can be improved by adjusting the number of layers of the water storage bins arranged outside the shaft, and further improving the water-saving effect of the hydraulic ship lift. The water storage bin can adopt a reinforced concrete structure or a steel-lined structure, with a smaller internal water pressure, greatly reducing the stress reinforcement or the thickness of the steel lining, and reducing the use cost.

[0073] The above are only some specific embodiments of the present invention (since the number of layers of the present invention can be arbitrarily set within a reasonable range, the embodiments cannot be exhausted, and the protection scope recorded in the present invention is subject to the description scope and the scope of its technical key points of the present invention), and the specific content or common knowledge known in the solution is not described in detail here. It should be noted that the above embodiments do not limit the present invention in any way. For those skilled in the art, any technical solutions obtained by means of equivalent replacement or equivalent transformation fall within the protection scope of the present invention. The protection scope claimed in this application should be subject to the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A water-saving system for a hydraulic ship lift, characterized in that, The water-saving system of the hydraulic ship lift system includes a plurality of vertical shafts (1) symmetrically arranged on both sides of the ship chamber, an extension main pipe (2), an extension branch pipe (3), a first branch pipe (4), a confluence main pipe (5), a second branch pipe (6), a water storage tank (7), a control valve (8); The first branch pipe (4), the confluence main pipe (5), the second branch pipe (6), the water storage tank (7), and the control valve (8) are grouped and layered according to different horizontal heights, and each group is a water-saving unit. The upper water-saving unit is arranged on the upper layer of the lower water-saving unit; The water-saving system of the hydraulic ship lift also includes a water conveyance system (9) arranged at the lower part of the ship chamber; The extension main pipe (2) is arranged at the lower part of the vertical shaft (1), and the extension main pipe (2) is communicated with the bottom of the vertical shaft (1); The water conveyance system (9) includes a water conveyance main pipe (10) and a water conveyance branch pipe (11); the water conveyance branch pipe (11) is communicated with the extension main pipe (2); An extension branch pipe (3) parallel to the vertical shaft (1) is arranged at the end of the extension main pipe (2); Connecting several groups of water-saving units are arranged at different heights of the extension branch pipe (3); a second branch pipe (6) is respectively connected and arranged at the bottom of each water storage tank (7); all the second branch pipes (6) are connected with the confluence main pipe (5); the first branch pipe (4) is arranged in the middle of the confluence main pipe (5), and the first branch pipe (4) is connected with the extension branch pipe (3); a control valve (8) is arranged on the first branch pipe (4); All the second branch pipes (6) have the same horizontal height; the confluence main pipe (5) is arranged horizontally; the second branch pipe (6), the confluence main pipe (5) and the first branch pipe (4) are arranged at the same horizontal height; A normally closed valve (13) is arranged at the end of the water conveyance main pipe (10); an inlet valve (12) is arranged at the front end of the water conveyance main pipe (10); The grouping and layering according to different horizontal heights has at least 2 layers; The cross-sectional area of the water storage tank (7) is the same as the cross-sectional area of the vertical shaft (1). The height difference between the top surface of the uppermost water storage tank and the highest water level of the vertical shaft is greater than or equal to the height of the water storage tank. The height difference between the bottom surface of the lowermost water storage tank and the lowest water level of the vertical shaft is greater than or equal to the height of the water storage tank. The control valve (8) is an electric control valve and is connected to a computer terminal; liquid level sensors are arranged on the water storage tank (7) and the vertical shaft (1).

2. The water-saving system of the hydraulic ship lift according to claim 1, characterized in that Connecting pipes (14) are arranged between the water storage tanks (7) on the same layer, and the connecting pipes (14) on the same layer have the same horizontal height; the connecting pipes (14) are arranged at the bottom position of the water storage tanks (7) on the same layer to keep the liquid level heights of the water storage tanks (7) on this layer consistent. The method for making the ship chamber go up includes:

3. The water-saving system for a hydraulic ship lift according to claim 1, wherein Step 1) Open the inlet valve (12) of the water conveyance system (9) and close the control valves (8) of each layer of the water-saving unit; the water level inside the vertical shaft (1) rises. When the water level inside the vertical shaft (1) rises to the highest level, the ship chamber is at the lowest position; at this time, close the inlet valve (12) of the water conveyance system (9); to make the ship chamber go up, the water inside the vertical shaft (1) needs to be drained. Step 2) Open the control valve (8) of the uppermost water storage tank (7), and the water flows under the action of the pressure difference from 4. The water-saving system of the hydraulic ship lift according to claim 1, characterized in that, ​ ​ ​ 5. The water-saving system of the hydraulic ship lift according to claim 1, characterized in that, ​ ​ ​ 6. The usage method of the water-saving system of the hydraulic ship lift according to claim 1, characterized in that, ​ ​ ​ ​ ​ ​ Flow into the water storage bin (7) at the top layer. When the water storage bin (7) at the top layer is full, close the control valve (8); Step 3) Open the control valve (8) of the water storage bin (7) at the second top layer. Under the action of the pressure difference, the water flows by gravity into the water storage bin (7) at the second top layer. When the water storage bin (7) at the second top layer is full, close the control valve (8); Step 4) Operate in this way until the water storage bin (7) at the bottom layer is full and then close the control valve (8) of this layer; Step 5) Due to the operations in Steps 2, 3, and 4, the water in the shaft (1) flows into the water storage bins (7) arranged from top to bottom in sequence. As the liquid level in the shaft (1) decreases, the ship lift compartment moves upward; Step 6) If there is still a large amount of water in the shaft (1) after Step 4 is completed, open the normally closed valve (13) provided at the end of the water conveyance main pipe (10) to discharge the excess water to the downstream river channel to reach the lowest water level in the shaft (1), and at the same time move the ship lift compartment to the highest position.

7. The method according to claim 6, wherein The method for moving the ship lift compartment downward includes: Step 7) Open the control valve (8) of the water storage bin (7) at the bottom layer. The water in the water storage bin (7) at the bottom layer can flow by gravity into the interior of the shaft (1). After the water transfer is completed, close the control valve (8) of this layer; Step 8) Open the control valve (8) of the water storage bin (7) at the second bottom layer. The water in the water storage bin (7) at the second bottom layer can flow by gravity into the interior of the shaft (1). After the water transfer is completed, close the control valve (8) of this layer; Step 9) Operate in this way until all the water in the water storage bin (7) at the top layer flows into the shaft (1) and then close the control valve (8) of this layer; Step 10) Due to the operations in Steps 7, 8, and 9, the water in the water storage bins (7) arranged from bottom to top flows into the shaft (1) in sequence. As the liquid level in the shaft (1) rises, the ship lift compartment moves downward; Step 11) If the water in the shaft (1) is insufficient after Step 9 is completed, open the inlet valve (12) provided at the front end of the water conveyance main pipe (10) to supplement the water into the shaft (1) to reach the highest water level in the shaft (1), and at the same time move the ship lift compartment to the lowest position.

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