ES1308744U - DOUBLE-ACTING HYDROSTATIC CYLINDER (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Cylindrical enclosure where a fluid in a liquid state with hydrostatic pressure moves in both directions an internal piston (7) with a single piston (10) that moves from the anterior chamber (6) where the starting position is located towards the posterior chamber (5) where the final position of its journey is located. (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

DOUBLE-ACTING HYDROSTATIC CYLINDER

TECHNIQUE SECTOR

The present invention is part of the technical sector related to mechanical elements.

It has a double-acting cylinder activated by the hydrostatic pressure that water presents to the entrances of the anterior or posterior chambers due to the depth with respect to the upper level of the accumulation to which the cylinder has been installed.

BACKGROUND OF THE INVENTION

The double-acting cylinders on the market are activated by the forced entry through pumps of some type of fluid, be it air, water or oil.

The present invention proposes a double-acting cylinder that takes advantage of the hydrostatic pressure of water when it occurs in the cylinder inlet pipes due to the depth at which it is located with respect to the surface level.

Therefore, it does not need any auxiliary pump to force water in and out to move the plunger and do its job.

The deeper the cylinder is installed, the greater the inlet pressure and therefore the greater the work it can perform.

The cylinder is not submerged in water but is installed in dry ground at a certain depth from where pipes are installed through which pressurized water circulates to the inlets of the cylinder.

EXPLANATION OF THE INVENTION

The double-acting hydrostatic cylinder has at least 4 water inlets with their respective control valves and at least two outlets with their respective control valves.

The hydrostatic cylinder cycle would be as follows:

a) The anterior chamber water inlet valves open, the anterior chamber outlet valve closes, the posterior chamber inlet valves close, and the posterior chamber outlet valve opens. Water with hydrostatic pressure begins to enter the anterior chamber, moving the plunger while water in the posterior chamber is forced out.

b) At the end of the piston's stroke, the anterior chamber is filled with pressurized water and the posterior chamber is empty.

c) Now the process is reversed. The anterior chamber water inlet valves close, the anterior chamber outlet valve opens, the posterior chamber inlet valves open, and the posterior chamber outlet valve closes. Water with hydrostatic pressure begins to enter the posterior chamber, moving the piston in the opposite direction while the water in the anterior chamber is forced out.

d) At the end of the piston's stroke, the posterior chamber is filled with pressurized water and the anterior chamber is empty of water and the cycle is repeated.

BRIEF DESCRIPTION OF THE DRAWINGS

To complement the description that is being made and in order to help a better understanding of the characteristics of the invention, a set of drawings is attached as an integral part of said description, where, with an illustrative and non-limiting nature, the following has been represented. following:

(FIG. 1). Shows the detail of a hydrostatic cylinder with four water inlets and two outlets. The anterior (6) and posterior (5) chambers of the cylinder are detailed, the water inlet to the anterior chamber (1a) (1b) and their respective control valves (1) (1c), the water outlet of the chamber front (3a) and its control valve (3), the water inlets to the rear chamber (2a) (2b) and their respective control valves (2) (2c), the water outlet of the rear chamber (4a ) and its control valve (4), the plunger (7), the piston (10), the radius of the hydrostatic cylinder (8), the cylinder stroke (8a), the diameter of the water inlet pipes (9 ), the diameter of the outlet pipes (9a), the water inlet pipes (11) (12) and the water outlet pipe (13).

(FIG. 2). It shows the detail of a hydrostatic cylinder coupled to a rack-and-pinion mechanism that helps to better understand the application of the invention to the generation of electrical energy. The rack (14) coupled to the piston (10), the pinion (15) with its support (18) geared to the rack that slides on guides (17), the shaft (16), the length of the rack are detailed. (19) and the inlet pipes (11) (12) and water outlet (13).

(FIG. 3). It shows the diagram of a reversible power plant and helps to better understand the application of the invention to the generation of electrical energy. This figure details the water inlet pipes (11) (12) located at a certain depth (20), the water outlet pipe (13) above the surface water level and a hydrostatic cylinder coupled to the pinion mechanism. -rack with inlet and outlet pipes (11) (12) (13) and a generator (21) coupled to the pinion (15).

PREFERRED EMBODIMENT OF THE INVENTION

To demonstrate the theoretical viability of the use of the present invention, its application to the reversible generation of electrical energy in a reservoir is shown below.

In particular, the construction of a hydrostatic cylinder with the characteristics detailed below coupled to a rack-and-pinion mechanism (14) (15) is presented to demonstrate that it can generate a theoretical power of around 34 MW in each direction of piston travel:

a) Four inlets and two water outlets: two inlets (11) (12) and one outlet (13) in each chamber of the cylinder: front (6) and rear (5)

b) Depth of the installation (20): H = 10 m

c) Diameter of the hydrostatic cylinder (8): 4 m

d) Stroke of the hydrostatic cylinder (8a): C = 5 m

e) Depth of water inlet pipes (11) (12): 10 m

f) Exit of the drainage pipe (13) above the maximum level of the reservoir: 1 m

g) Diameter of the water inlet pipes to the cylinder (9) (1a) (1b) (2a) (2b): 0.2 m

h) Diameter of the cylinder water outlet pipes (9a) (3a) (4a): 0.2 m

The water inlets into the anterior (1a) (1b) and posterior (2a) (2b) chambers cause the piston (10) to move with the attached rack (14) describing an alternative linear movement that becomes circular in the pinion ( fifteen).

The water outlets from the cylinder are forced when, after opening the outlet valves (3) (4), the plunger (7) forces the water to come out through the drain pipe (13). The water leaves through this pipe at 1 meter above the maximum water level of the reservoir to be reused.

The pinion (15) is finally coupled either directly to the shaft of the electric generator (16), or to it, through some angular velocity transformation mechanism to adjust it to the parameters of the generator.

With these parameters, the water pressure in atmospheres in each of the inlets depending on the depth of the installation, H, would be:

P=(0.1H)+1 =( 0.1 -10 m) 1= 2atm

The surface of the plunger (7) would be:

Therefore, the force that the two water inlets exert on the piston in the posterior chamber (5) would be:

According to Torricelli's theorem, the velocity of the water through the inlet pipes to the cylinder (11) (12) would be:

On the other hand, the maximum force exerted by the column of water present in the outlet pipe (13) on the piston (7) in the anterior chamber (6) when its outlet valve (3) is opened would be:

In this way, the theoretical power that the hydrostatic cylinder can generate in the rear chamber (5) would be:

The theoretical power that is generated when the water enters the anterior chamber (6) will be somewhat lower since the surface of the piston will have to be deducted from the surface of the piston.

The stroke of the hydrostatic cylinder (8a) and the length of the rack (19) must be equal. The greater the cylinder stroke, the longer the time that the installation is generating at the same theoretical power before repeating the cycle in reverse. With the previous parameters, the travel time, which is the same as the filling time, would be:

The theoretical power could be improved:

a) Installing and synchronizing more than one hydrostatic cylinder

b) Increasing the depth of the installation (20)

c) Increasing the radius of the hydrostatic cylinder (8)

d) Increasing the number of water inlets to the cylinder

The previous calculation shows the theoretical performance of the installation, the losses in the system have not been taken into account, but the theoretical power generated seems high enough to suggest that once the real performance is calculated, the use of the present invention applied to electrical generation.

What advantages would the use of the present invention provide compared to the technology used in a conventional reversible hydroelectric plant:

a) It would not require a waterfall to generate electrical energy

b) It would not require pumps to reuse water

Claims (5)

1. Cylindrical enclosure where a fluid in a liquid state with hydrostatic pressure moves in both directions an internal piston (7) with a single piston (10) that moves from the anterior chamber (6) where the starting position is located towards the posterior chamber (5) where the final position of its journey is located. 2. Cylindrical enclosure, according to claim 1, where at least two fluid inlets are located in a liquid state with hydrostatic pressure (1a) (1b) located between the cover (cylinder head) of the anterior chamber (6) and the starting position. of the piston, as close to the cover (cylinder head) of the anterior chamber (6) to maximize the piston stroke and controlled by their respective valves (1) (1c). 3. Cylindrical enclosure, according to claim 1, where at least two fluid inlets are located in a liquid state with hydrostatic pressure (2a) (2b) located between the final position of the piston and the cover (cylinder head) of the rear chamber (5 ), as close to the latter (5) to maximize the piston stroke and controlled by their respective valves (2) (2c). 4. Cylindrical enclosure, according to claim 1, where at least one fluid outlet in liquid state (3a) is located between the cover (cylinder head) of the anterior chamber (6) and the starting position of the piston, as close as possible. to the cover (cylinder head) of the anterior chamber (6) to maximize the piston stroke and controlled by a valve (3). 5. Cylindrical enclosure, according to claim 1, where at least one outlet of fluid in a liquid state (4a) is located between the final position of the piston and the cover (cylinder head) rear chamber (5), closest to the latter ( 5) to maximize piston travel and controlled by a valve (4).