CN115478524A

CN115478524A - Hydraulic lift

Info

Publication number: CN115478524A
Application number: CN202211384565.5A
Authority: CN
Inventors: 易坚浩; 易煊恺
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-10
Filing date: 2022-11-07
Publication date: 2022-12-16
Anticipated expiration: 2042-11-07
Also published as: CN115478524B; CN114197430A

Abstract

The invention discloses a hydraulic lift, which comprises a balance body, a power assembly and a control assembly, wherein the balance body is arranged to float on a water body of a vertical shaft and is arranged to bear a navigation ship or other objects; the power assembly and the balance body are connected with each other, the power assembly is arranged for driving the balance body, and the control assembly is connected with the balance body and the power assembly and used for controlling the start-stop speed and the floating and sinking speed of the balance body. The hydraulic lift is applied to the vertical shaft, after the balance body floats on the water body of the vertical shaft, the balance body moves through the power assembly, and then the function of a ship lock or a ship lift or the combination of the ship lock and the ship lift is achieved.

Description

Hydraulic lift

Technical Field

The invention belongs to the technical field of lifting, is suitable for lifting ships, and particularly relates to a hydraulic lifter.

Background

The method generally has a navigation channel required for navigation, and navigation facilities such as a ship lock or a ship lift need to be built to solve the passing requirement of ships under the condition that the water level difference exists between the upstream and the downstream; the existing navigation facilities mainly comprise two types, namely a ship lock and a ship lift, but in any type, selection and decision are needed to be made according to annual flow of a channel at the initial construction stage. If a ship lift is selected to be built, the ship lift cannot operate in a lock mode even if the upstream water amount is found to be sufficient after the ship lift is built; if a ship lock is selected to be built, the ship can be shut down when insufficient water resources are available for consumption during operation, and the ship lock cannot be switched on according to the change of the channel flow after being built. In addition, in a ship lock mode, the larger the difference of water level heights of the upstream and the downstream is, the more water is consumed in one pass, although a certain water-saving effect can be achieved by externally connecting a water-saving pool, the land acquisition area and the engineering quantity can be increased, the water delivery time can be prolonged, and the operation efficiency can be reduced; although the ship lift consumes no water, the passing efficiency is low, the ship lift is generally suitable for passing one ship at a time, the investment of lifting equipment is large, and the operation and maintenance cost is high. Therefore, no matter what kind of navigation facilities, there is a place which needs to be improved in technology, and especially the technical characteristics of a ship lock and a ship lift need to be integrated, so that the effects of water saving, energy saving and high traffic efficiency are achieved, the construction decision and selection of the navigation facilities do not need to depend on the abundance of navigation water, and the adaptability of the navigation facilities to water resource conditions is improved.

In the notice of the outline of the long-term development planning in the scientific and technological innovation in the traffic field (2021-2035) of the department of transportation and science and technology, it is clearly proposed to break through the technology of constructing major strategic channels in China, develop the research on the technology of constructing major infrastructures such as cross-river and sea channels, west land and sea new channels, canal communication engineering, etc., break through the key technologies such as navigation lock of high dam, water-saving lock, etc., and improve the technical level of reliability design and intelligent construction of traffic infrastructures under the natural environmental conditions of complex geology, hydrology, climate, etc.

It is reported that 2016, a Yunnan torrential flood hydropower station put into operation a hydraulic ship lift, which is a novel ship lift originally created in China and having completely independent intellectual property rights, is also created in the construction history of the ship lifts at home and abroad, the maximum lifting height of the hydraulic ship lift is 66.86 meters, the ship-passing tonnage of the hydraulic ship lift is 500 tons, the lifting time is about 17 minutes in the whole process, and the annual freight transportation capacity is 124.5 ten thousand tons. The ship lift uses water energy to lift power, fills water into a vertical shaft through a water conveying pipeline, drives a buoy to lift, and drives a ship bearing chamber to lift and run, namely when the water conveying pipeline fills water into the vertical shaft, the buoy in the vertical shaft rises to drive the ship bearing chamber to descend to a downstream water level from a reservoir water level; on the contrary, when the water pipe drains, the float bowl in the vertical shaft descends, and the ship bearing chamber ascends to the water level of the reservoir from the downstream water level, so that the ship can pass through the scenic flood power station with the height of nearly 68 meters. Compared with the traditional ship lifts at home and abroad, the hydraulic drive is adopted for the first time to replace the traditional motor drive mode, and the stable balance is realized by relying on the hydraulic drive and automatically adapting to the load change, so that the transmission mechanism and the control system are greatly simplified, the operation safety, reliability and adaptability are improved, and the hidden danger caused by sudden power failure is avoided. However, the hydraulic ship lift has limited number of ships passing through at one time, and the passing efficiency is not as high as that of a ship lock; although the inherent transmission mechanism of the ship lift is simplified, the problem of abrasion of the steel wire rope still exists, the water-saving effect is not characterized in that the ship lift does not need water consumption, and the water consumption degree is similar to that of a ship lock. The hydraulic ship lift only replaces electric drive with hydraulic drive, does not improve the lower passing efficiency of a mechanical ship lift, and does not realize effective breakthrough in the key technology of a water-saving ship lock.

Disclosure of Invention

In view of the above, the present invention provides a hydraulic elevator, which can be a huge elevator directly driven by water power only at a place with water level difference; the lift is used for navigation facilities, can integrate the technical characteristics of a ship lock and a ship lift, can realize the special effects of high passing efficiency of the ship lock and water saving of the ship lift only based on a vertical shaft and a water level drop upstream and downstream, and can also be conveniently selected and switched between a ship lock mode and a ship lift mode.

A hydraulic lift comprising:

the balance body is arranged to float on a water body of the vertical shaft and is used for bearing a navigation ship or other objects;

the power assembly is connected with the balance body and is used for driving the balance body to float and sink;

and the control assembly is connected with the balance body and the power assembly and is used for controlling the start-stop speed and the floating and sinking speed of the balance body.

Further, the control assembly comprises a throttling box, a pipeline, an air passage and a valve, wherein the throttling box is communicated with the outside atmosphere through the air passage.

Further, the balance body comprises a ship-bearing pool and a buoyancy piece which are connected with each other, the density of the buoyancy piece is smaller than that of the water body, and bearing fluid is arranged in the ship-bearing pool and used for floating the navigation ship on the fluid (the ship-bearing pool can also bear other objects except the fluid).

Furthermore, the power assembly comprises a water storage tank, a pipeline, an air passage and a valve, the water storage tank is communicated with the outside atmosphere or a floating part through the air passage, the water storage tank can be arranged at an upper position, a lower position or a double-water-storage-tank clamping position, the upper position is that the water storage tank is positioned above the throttling box, the lower position is that the water storage tank is positioned below the throttling box, and the double-water-storage-tank clamping position is that the throttling box is positioned between the two water storage tanks.

Furthermore, one end of a pipeline in the control assembly is connected with a water inlet and a water outlet of the throttling box, the other end of the pipeline is communicated with a water body in the shaft, and the valve is arranged on the pipeline, so that the throttling box can discharge the water body to the shaft or inject the water body into the shaft.

Furthermore, one end of the pipeline in the power assembly is connected with a water inlet and a water outlet of the water storage tank, the other end of the pipeline is communicated with an upstream water level, a downstream water level or water in the vertical shaft, and the valve is arranged on the pipeline, so that the water storage tank can be selectively discharged from the water storage tank to the upstream, the downstream or the vertical shaft or injected into the water storage tank from the upstream, the downstream or the vertical shaft.

Further, the inside of the floating part is provided with a gas storage cavity in a separated mode, and the cavity is introduced from the top of the water storage tank through an air passage and communicated with the water storage tank.

Furthermore, a water pump is connected to a pipeline in the power assembly.

Furthermore, when fluid exists in the ship-bearing pool, the two ends of the ship-bearing pool are provided with the gates which can be opened downwards in a lifting mode.

The novel water-saving and energy-saving hydraulic elevator provided by the invention has the technical characteristics that different operation modes can be flexibly selected according to the navigation water quantity, the navigation function of a ship lock or a ship lift is simulated, particularly, the novel water-saving and energy-saving hydraulic elevator can be applied to any places needing ship lifting to realize high-efficiency navigation, such as ship navigation overbridge, underground navigation tunnel and the like in the mode of the ship lift and with the navigation efficiency of the ship lock, and even the arrangement of a downstream side gate can be cancelled, so that the construction scale of navigation facilities is simplified. Compared with the prior art, the invention has the following beneficial technical effects:

1. the hydraulic lift realizes lifting by utilizing the balance and rebalance of buoyancy and dead weight, is theoretically feasible by adopting the lift as a navigation facility in the physical limit of the lift and the acceptable lifting travel range of the structure of the navigation facility from the analysis of an operation mechanism, has wider universality and applicability compared with the existing navigation facility, and has the greatest advantage of saving water and energy to the utmost extent.

2. The hydraulic lift integrates the functions and characteristics of a ship lock and a ship lift, can have the operation modes of the ship lock or the ship lift or both, can select operation according to whether the navigation water amount of a navigation channel is abundant, can independently operate in the ship lock mode or the ship lift mode, is convenient and reliable to select, and is suitable for any places needing ship lifting to realize high-efficiency navigation, such as ship navigation overbridge, ship underground navigation tunnels and the like.

3. Under the necessary condition, the hydraulic lift adopts the arrangement of double water storage tanks, one of which is arranged below, and can also cancel a gate at one end of the downstream side, and a downstream ship can directly enter and exit from a ship-bearing pool, thereby simplifying the structure of navigation facilities.

Drawings

Fig. 1 is a schematic structural view of a reservoir-overhead hydraulic lift of the present invention.

Fig. 2 is a schematic structural view of a reservoir underneath type hydraulic lift of the present invention.

FIG. 3 is a schematic view of a double-reservoir sandwiched hydraulic lift of the present invention.

Fig. 4 (a) is a schematic cross-sectional layout of the overhead hydraulic hoist of the present invention.

Fig. 4 (b) is a schematic longitudinal section layout of the overhead hydraulic lifter of the present invention.

FIG. 5 is a schematic view of the present invention in a downstream position with an overhead hydraulic lift.

Fig. 6 is a schematic view of the hydraulic lift of the present invention applied to a ship navigation overpass.

Fig. 7 is a schematic diagram of the hydraulic lift of the present invention applied to an underground ship navigation tunnel scenario.

Detailed Description

In order to more specifically describe the present invention, the following detailed description is provided for the technical solution of the present invention with reference to the accompanying drawings and the specific embodiments.

As shown in fig. 4 (b), the hydraulic lift of the invention runs in the shaft by buoyancy, the water body in the shaft is self-organized according to the running requirement, the shaft is longitudinally connected with the upstream and downstream approach channel gates, and the transverse width is slightly larger than the upstream and downstream approach channel widths; as shown in fig. 1 to 3, the elevator body comprises a ship receiving pool, a throttling tank, a water storage tank and a buoy, the self weight of the elevator and the buoyancy of the buoy form a balance body, the water storage and drainage of the water storage tank can cause the self weight or the buoyancy of the elevator to change so as to drive the balance body to lift, and the process of containing or returning the shaft water by the throttling tank is the lifting process of the elevator; specifically, the method comprises the following steps:

the ship reception pool is used for accommodating navigation ships and is located at the top of the elevator, the water level in the ship reception pool meets the ship draft, the ship reception pool is provided with gates at two ends of the ship passing in and out, and when the elevator rises to the highest position (ship reception pool water level and upstream water level) or the lowest position (ship reception pool water level and downstream water level), the ship reception pool gate is in butt joint with an upstream or downstream navigation channel gate. The size of the ship bearing pool is designed according to the needs, the requirement of bearing a plurality of ships can be met, and the one-time passing efficiency same as that of a ship lock is achieved in the quantity of the ships.

The throttle box is arranged between the ship bearing pool and the buoy, the height of the throttle box is determined according to the lifting stroke, the bottom side valve controls the vertical shaft water to enter and exit the throttle box, the top 1# air passage is communicated with the external atmospheric pressure, the vertical shaft water can freely enter and exit when entering and exiting the throttle box in the sinking and floating processes, the size and the shape of the throttle box can influence the lifting speed of the lifter, and the flow of the water inlet and outlet holes of the throttle box and the opening and closing of the air passage can also control the lifting and the speed of the lifter.

The flotation pontoon is located the lift bottom, highly is H, can be nearly to bear whole lift dead weight on the surface of water, and its inside partial space height of opening up is Hs, makes whole flotation pontoon divide into the first gas storage space of Hs height and the second gas storage space and the surplus retention space of Hz height, and two gas storage spaces are communicate with the catch basin by 0# and 2# air flue respectively.

The water storage tank is positioned above or below the throttling box, the inlet and the outlet of the water storage tank are connected with a foldable pipe or a flexible pipe, and the water storage tank can be communicated with an upstream or downstream or vertical shaft water body through a water delivery gallery after being switched by a valve. When the water storage tank stores water from the upstream or stores water from the vertical shaft through the water pump, the self weight of the elevator is increased or the buoyancy is reduced, and the elevator descends; when the water storage tank drains water to the downstream or drains water to the vertical shaft, the self weight of the elevator is reduced or the buoyancy is increased, and the elevator rises. The water storage tank and the throttling tank continuously and repeatedly store water, feed water, drain water and drain water in sequence, and the buoy can bear the water storage tank, the throttling tank and the ship bearing pool to circularly complete the up-and-down lifting movement in the vertical shaft.

According to the structure and composition requirements of the lifter, the invention is theoretically analyzed, the positions of the water storage tanks can be divided into an upper water storage tank and a lower water storage tank relative to the throttling tank, one or two water storage tanks are divided according to the number of the water storage tanks, and the single water storage tank can be understood as formed by combining the double water storage tanks at the same side of the water storage tank. FIG. 1 shows that the water storage tank is arranged above the throttling tank, namely the water storage tank is arranged below the throttling tank, FIG. 2 shows that the water storage tank is arranged below the throttling tank, FIG. 3 shows double water storage tanks, and the water storage tanks are clamped up and down, the double water storage tanks and one of the double water storage tanks are arranged below the throttling tank, so that the integration of shaft water and downstream water can be realized, a gate at one end of the downstream side is eliminated, the water level of a ship bearing pool is horizontal to the downstream water level, and a ship can directly enter and exit the ship bearing pool in a downstream navigation channel.

Examples

The operating principle of the three types of arrangement is basically the same, and the embodiment will respectively explain the operating principle of the elevator and the related calculation.

For better description of the elevator hoisting process, we define the relevant symbols as follows:

p is atmospheric pressure, expressed as the height of water, about 10.33m;

hg is the maximum upstream and downstream water level difference, namely the height of the throttling tank;

hc is the sum of the depth of the ship bearing pool and the height of the ship bearing pool bottom structure;

hx is the height of the water storage tanks, the power of the lifting or descending of the elevator is determined by Hx (1-k) gravity or buoyancy requirements, wherein k = (p + Hc + Hx)/(2p + Hc + Hx) in the upper-mounted mode, k = (p + Hg + Hc + Hx)/(2 = (p + Hg) + Hc + Hx) in the lower-mounted mode, k =0.5 in the case of double water storage tanks, the height of each water storage tank is k:, and the total height is Hx.

Hs is the height of the space opened in the buoy;

hz is the height of the space in the buoy;

hk is the minimum lowering height of the lifter required by filling the gas into the Hz space after the water storage tank is filled with Hx k space;

h is the total height of the space of the buoy and is about the draught of the elevator, and H is more than or equal to Hs + Hz;

s is the width of a vertical shaft; sa is the elevator width.

Suppose that: sa/S is approximately 0; the shapes of all parts of the elevator are regular, the sizes of various water charging and discharging orifices and air passages, and the gaps and the thicknesses of all parts are not counted, under the condition that the section width is the same, the volume is in proportional relation with the height, and meanwhile, the pressure and the height of water can be simplified and expressed mutually.

The hydraulic lift of the invention is driven by water level drops or water pumps at the upstream and the downstream, the former consumes potential energy (similar to a ship lock operation mode), and the latter consumes electric power (similar to a ship lift operation mode). In any mode, the water storage tank needs to be filled with water at an upstream position, and drained at a downstream position; after the water is filled, the weight of the elevator is increased or the buoyancy is reduced, and the elevator descends; after the water is discharged, the weight of the elevator is reduced or the buoyancy is increased, and the elevator is raised.

Next, we will explain the principle of the elevator in the ship lock operation mode and the ship lift operation mode, respectively.

(1) The ship lock operation mode:

in the process of water storage and water filling operation of the water storage tank, when the water storage tank is arranged on the upper portion, the minimum basic air pressure in Hs is ensured to be p, and the minimum basic air pressure in Hz space in the float bowl is Hc + Hx + p. When the water storage tank is arranged below, the minimum base air pressure in Hs is Hg + p during operation, and the minimum base air pressure in Hz space in the buoy is Hc + Hx + Hg + p. When the double water storage tanks are clamped, the minimum base air pressure in Hs is ensured to be p, and the minimum base air pressure in Hz space in the buoy is Hc + Hx + Hg + p.

1.1 Down run

In the upstream position of the lift, the reservoir needs to hold water from the upstream body of water, as shown in fig. 4 (a).

The water storage tank is communicated with a valve of an upstream water body, the upstream water body is filled into the water storage tank through the water delivery gallery and the connecting pipe fitting under the driving of the Hc + Hx height pressure difference, the pressure in the tank is increased to the end of water filling self-resistance after the water storage tank is filled with Hx (1-k) water volume by calculating the Hs size, at the moment, the weight of the elevator is increased by Hx (1-k) water weight, hx (1-k) gas in the tank is pressed into the float bowl space Hs through the 0# air passage, and the height of the elevator is reduced by Hx (1-k) so that the water inlet of the throttling box is positioned below the water level of the vertical shaft.

In the case of the overhead, the pressure and volume change associated with Hs during the initial Hx (1-k) descent phase can be expressed as the following equation:

Hx(p+Hc+Hx)+Hs*p＝(Hs+Hx*k)(p+Hc+Hx)

under the condition of the following formula:

Hx(p+Hc+Hx+Hg)+Hs(p+Hg)＝(Hs+Hx*k)(p+Hc+Hx+Hg)

under the double-water-storage-tank clamping type condition:

(Hs+Hx/2)p＝Hs(Hc+Hx+p)

when the 1# air passage and the water storage tank valve are opened, water enters the water storage tank, and the elevator descends; meanwhile, the No. 0 air passage is closed, the No. 2 air passage is opened, the water storage tank continues to be filled with water along with the descending of the elevator, the water storage tank is full of water after the Hk is descended, and the residual k x Hx gas in the water storage tank is pressed into the buoy space Hz.

In the case of the overhead, the pressure and volume changes associated with Hz after the Hk lowering phase can be expressed as the following equation:

(Hx*k+Hz)(Hc+Hx+p)＝Hz(Hc+Hx+p+Hk)

under the condition of the lower placed type:

(Hx*k+Hz)(Hc+Hx+Hg+p)＝Hz(Hc+Hx+Hg+p+Hk)

under the double-water-storage-tank clamping type condition:

(Hx/2+Hz)(Hc+Hx+p+Hg)＝Hz(Hc+Hx+p+Hg+Hk)

once the water storage tank is full, the 2# air passage is closed, the 0# air passage is opened, the valve of the water storage tank is communicated with the downstream water level, the pressure stored in the Hs space forces a corresponding part of water in the water storage tank to be discharged downstream (the water can be discharged by using gravity, and the 0# air passage is communicated with the atmosphere); and after the discharge, the Hs space pressure is restored to the basic pressure p, the 0# air passage is closed after the restoration, the Hs space basic pressure is ensured to be unchanged until the upstream water body is connected again, and the next lifting cycle is started.

Under the overhead condition, after the height of the Hk is reduced, the pressure in the Hs space is discharged to the water body y in the water storage tank, and the related pressure and volume change is as follows:

hs (p + Hc + Hx) = (y + Hs) p, and after simplification, y = Hx × k.

Under the condition of the following formula:

hs (p + Hc + Hx + Hg) = (y + Hs) (p + Hg), and after simplification, y = Hx × k.

Under the double-water-storage-tank clamping type condition:

Hs(Hc+Hx+p)＝(Hs+Hx/2)p

at the moment, the elevator does not descend to the position in place, the water level of the ship receiving pool is far from the downstream water level > = Hc + Hx, the 2# air passage is kept closed, the water storage tank valve is closed, the weight Hx (1-k) of the residual water which is not discharged in the water storage tank is taken as power, the elevator continues to descend under the flow control of the throttling box valve until the top of the throttling box or the throttling box valve is closed, the descending of the elevator is stopped, and the elevator sinks to the downstream water level as shown in fig. 5.

1.2 run on Lift

The elevator is in a downstream position and the reservoir needs to be drained to the downstream body of water, as shown in fig. 5.

The water storage tank is communicated with a valve of a downstream water body, and when the No. 2 air passage is opened, the air pressure Hk in the buoy space Hz forces the water body in the water storage tank to be discharged downstream; after discharging, the weight of the elevator is reduced by Hx (1-k), the basic pressure of the buoy Hz space is recovered, the 2# air passage is closed immediately after recovery, the basic pressure in the Hz space is kept unchanged, the 0# air passage is continuously closed until the elevator rises to the upstream position, and upstream water is connected again to start the next lifting cycle.

Under the overhead condition, the elevator discharges the surplus water stage in the catch basin at downstream water level, inside atmospheric pressure of Hz space, and relevant pressure and volume change become:

Hz(Hk+p+Hc+Hx)+y*p＝(Hz+Hx)(p+Hc+Hx)

under the condition of the lower formula, then:

Hz(Hk+p+Hc+Hx+Hg)+y(p+Hg)＝(Hz+Hx)(p+Hc+Hx+Hg)

under the double-water-storage-tank clamping type condition:

Hz(Hc+Hx+p+Hg+Hk)＝(Hx/2+Hz)(Hc+Hx+p+Hg)

after transformation, the equation is established, and the water in the tank is completely emptied. At the moment, when the No. 1 air passage and the throttle box valve are opened, the water in the throttle box returns to the vertical shaft, the elevator ascends under the flow control of the valve by taking Hx (1-k) as buoyancy until the water body in the throttle box is emptied or the valve is closed, and the ascending of the elevator is stopped, as shown in figure 4 (a).

(2) The ship lift operation mode:

in the operation mode of the ship lift, only one air passage is needed to be communicated with one energy storage space in the buoy, or the upstream water charging of the water storage tank and the downstream water discharging of the water storage tank are completed by the participation of a water pump.

2.1 Down run

The elevator is in the upstream position and the reservoir holds water from the shaft as shown in fig. 4 (a).

The water pump pumps the water in the shaft and fills the water storage tank, the selected pump lift is about greater than Hg + Hx, the water storage tank is filled with Hx/2 to meet the requirement of descending power, the gas Hx/2 in the tank is pressed into the buoy space Hz, and the elevator descends Hx/2 to the water inlet of the water storage tank.

When the No. 1 air passage and the water storage tank valve are opened, water enters the water storage tank, the elevator descends under the flow control of the water storage tank valve until the top of the water storage tank or the water storage tank valve is closed, the descending of the elevator is stopped, and the elevator descends to the downstream water level as shown in figure 5.

2.2 run on rise

The elevator is in the downstream position and the reservoir drains into the shaft as shown in figure 5.

When the No. 1 air passage and the valve of the water storage tank are opened, water in the water storage tank returns to the vertical shaft, the elevator ascends under the control of the valve flow until the water in the water storage tank is emptied or the valve is closed, and the ascending of the elevator is stopped, as shown in fig. 4 (a).

In the embodiment, the buoy is positioned at the bottom of the elevator, the dead weight of the whole elevator is borne on the water surface, the space Hs and the buoy space Hz which are opened inside the buoy are communicated with the water storage tank Hx through the air passage at the top of the water storage tank, when the water storage tank is full of the water body with the height of Hx, the gas with the heights of Hx (1-k) and Hx x k are respectively pressed into the buoy spaces Hs and Hz, and the obtained pressure can enable the elevator to force the water body of the water storage tank to be discharged downstream when the elevator is in a downstream position.

The water body weight change of the impoundment tank ensures that the elevator has enough sinking and floating power, if the minimum requirement is about 0.42m water weight, hx =1m is set, when Hg =15m, p =10.33m, hc =3m, H =6m, k =0.58 is obtained, hs =1.5m is obtained by the equation Hx (p + Hx + Hc) + Hs p = (Hs + Hx = k) (p + Hc + Hx), and then: hz = H-Hs, hz =4.5m.

From the equation (Hx × k + Hz) (Hc + Hx + p) = Hz (Hc + Hx + p + Hk), it is found that Hk =1.85m when Hx is full.

After filling, when Hs releases the internal pressure, y = Hx k =0.58m, obtained from the equation Hs (p + Ht) = (y + Hs) p, the elevator ensures that the water remaining in the tank can continue to drop by about 0.42 m.

The equation Hz (Hk + p + Hc + Hx) + y p = (Hz + Hx) (p + Hc + Hx) proves to be true after conversion, the elevator can discharge all the residual water in the tank when the elevator is at the downstream, and the elevator can rise.

The calculation results show that: hg is more than or equal to Hc + Hx + Hk, which is the operation condition that the elevator meets the navigation facility, and the three types of water storage tanks can meet the arrangement requirement of the navigation facility with the upstream and downstream fall of 15m, but obviously, the overhead arrangement has stronger applicability. When the dead weight change of the water body of the water storage tank is about 0.4m, the power requirement of the lifting machine for ascending and descending can be met, only 1m of water is consumed in one operation, which is far less than the water consumption of the common ship lock in one pass, so that the water-saving effect of the hydraulic lifting machine used as a navigation facility is very obvious, and simultaneously, in the mode of the lifting machine, the water pump efficiency is higher than the mechanical transmission efficiency, the energy-saving effect of the hydraulic lifting machine is also very obvious, the operation is reliable, and the maintenance cost is low.

According to the operation principle, under the necessary condition, when the elevator adopts a double-water storage tank clamping type structure as shown in figure 3, the lower water storage tank is approximately equal to the draught height Hc of the ship bearing pool, the external energy storage space is increased, namely, the Hz space is enlarged in an external form, the elevator can sink into a downstream water body under the condition of smaller water level difference between the upstream and the downstream, the vertical well water and the downstream water are integrated, and a ship directly enters and exits the ship bearing pool, so that the possibility of canceling a downstream side gate is achieved. The water consumption of the double-water storage tank lifter in one circulating operation is at most Hx + Hc, and a good water-saving effect is still achieved.

The hydraulic lift provided by the invention has the advantages of water saving, energy saving and integration of the advantages of the ship lock and the ship lift as a navigation facility, can realize the function and scene application of the conventional navigation facility, can be further expanded and applied to places which can not provide abundant hydraulic resources and need to reach the passing efficiency of the ship lock, and is particularly suitable for navigation occasions needing to build a water-saving pool.

In the ship navigation overbridge scene shown in fig. 6, the hydraulic elevators are arranged at the left end and the right end of the overbridge and run in a ship lift mode, so that navigation can be realized without lifting the bridge floor, and the difficult problem of overhigh bridge reconstruction cost caused by insufficient bridge clearance and high expressage and removal cost is solved instead.

In the scene of the underground ship navigation tunnel shown in fig. 7, the hydraulic elevators are arranged at the inlet end and the outlet end of the tunnel as a navigation facility scheme, and the hydraulic elevators are operated in a ship lift mode, so that efficient three-dimensional cross navigation of different water systems can be achieved, and the number of ships passing at one time is the same as that of a ship lock.

The lift with the double water storage tank clamping type structure or the double water storage tank underlying structure has the advantages that the ship bearing pool can be completely sunk into downstream water, ships can directly enter and exit the ship bearing pool, and the ships in the ship bearing pool can be lifted to the required height, so that the maintenance of the ships is facilitated.

The lift can be regarded as a giant lift which is directly driven by water power at the place with water level difference, the increase and decrease of the water quantity of the upper water storage tank are cooperated with the weight change of the bearing object, the balance and the rebalance of the self weight and the buoyancy of the lift can be realized, and the lifting cycle is completed.

The foregoing description of the embodiments is provided to enable one of ordinary skill in the art to make and use the invention, and it is to be understood that other modifications of the embodiments, and the generic principles defined herein may be applied to other embodiments without the use of inventive faculty, as will be readily apparent to those skilled in the art. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications to the present invention based on the disclosure of the present invention within the protection scope of the present invention.

Claims

1. A hydraulic lift, comprising:

the balance body floats on the water body of the vertical shaft and is used for bearing a navigation ship or other objects;

2. The hydraulic lift of claim 1, wherein: the control assembly comprises a throttling box, a pipeline, an air passage and a valve, wherein the throttling box is communicated with the outside atmosphere through the air passage.

3. The hydraulic lift of claim 2, wherein: the balance body comprises a ship bearing pool and a floating piece which are connected with each other, the density of the floating piece is smaller than that of a water body, and bearing fluid is arranged in the ship bearing pool and used for floating of a navigation ship on the fluid.

4. The hydraulic lift of claim 3, wherein: the power assembly comprises a water storage tank, a pipeline, an air passage and a valve, wherein the water storage tank is communicated with the outside atmosphere or a floating part through the air passage, the water storage tank can be arranged at an upper position, a lower position or a double-water-storage-tank clamping position, the upper position is that the water storage tank is positioned above the throttling box, the lower position is that the water storage tank is positioned below the throttling box, and the double-water-storage-tank clamping position is that the throttling box is positioned between the two water storage tanks.

5. The hydraulic elevator as claimed in claim 2, wherein: one end of the pipeline in the control assembly is connected with a water inlet and a water outlet of the throttling box, the other end of the pipeline is communicated with the water body in the shaft, and the valve is arranged on the pipeline, so that the throttling box can discharge the water body to the shaft or inject the water body into the shaft.

6. The hydraulic lift of claim 4, wherein: one end of the pipeline in the power assembly is connected with a water inlet and a water outlet of the water storage tank, the other end of the pipeline is communicated with an upstream water level, a downstream water level or a water body in the vertical shaft, and the valve is arranged on the pipeline, so that the water storage tank can selectively discharge the water body to the upstream, the downstream and the vertical shaft or inject the water body into the water body from the upstream, the downstream and the vertical shaft.

7. The hydraulic lift of claim 3, wherein: the inside gas storage cavity that separates of buoyancy spare is provided with, and this cavity leads in from the catch basin top through the air flue and communicates with the catch basin.

8. The hydraulic lift of claim 4, wherein: and a water pump is also connected to a pipeline in the power assembly.

9. The hydraulic lift of claim 3, wherein: when fluid exists in the ship-bearing pool, the two ends of the ship-bearing pool are provided with gates which can be opened downwards in a lifting mode.