SU1118798A2 - Positive-displacement wave pump - Google Patents

Abstract

1-VOLUME WAVE PUMP autom. St. No. 505820, characterized in that, in order to expand the scope of application by using the difference between water and the environment temperature to obtain useful work, the movable wall of the drive device chamber is made in the form of a heat exchanger partially filled with a heat-sensitive working fluid, the heat exchanger cavity is connected to the cavity of the drive device chamber openings, with the movable wall of the chamber of the latter located at the interface between warm water and a cold environment at a temperature in the heat exchanger equal to the average temperature between water and ambient temperatures. 2. A pump according to claim 1, characterized in that all the walls of the chambers, except for the moving wall of the chamber of the drive device, are thermally insulated.

Description

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The invention relates to a hydraulic machine building, namely to pumps driven by wave energy and / or thermal energy, temperature differences arising between the water of the reservoir and the air surrounding it.

According to the main author. St. No. 505820 is known a wave pump containing a working chamber fixed on a support in a pond, the movable wall of which is connected with a drive device interacting with waves arising on the surface of the reservoir, and the drive device is designed as a chamber filled with gas and submerged under the fluid level in the pond volume, one of the walls of which is connected with the movable wall of the working chamber, and the other with the support 1.

The disadvantage of the known pump is its inoperability in the absence of waves, but in the presence of a temperature difference between water and air above the reservoir.

The aim of the invention is to expand the scope of use by using the difference in water temperature and the environment for useful work.

This goal is achieved by the fact that in a volumetric wave pump containing a working chamber fixed on a support in a pond, the movable wall of which is associated with a drive device interacting with waves arising on the surface of the reservoir, the drive device is made in the form of a gas filled and immersed below the liquid level a variable volume chamber in a pond, one of the walls of which is connected with the movable wall of the working chamber and the other with a support, the movable wall of the drive device chamber being made in the form of heat the heat exchanger, partially filled with a heat-sensitive working fluid, the heat exchanger cavity is connected to the cavity of the drive device with holes, and the movable wall of the chamber of the latter is located at the interface of warm water and cold environment at a temperature in the heat exchanger equal to the average temperature between the water temperature and the environment.

In addition, all the walls of the chambers, except for the movable wall of the drive unit, are heat insulated.

The drawing shows schematically the described volumetric wave pump, the cut.

The wave pump contains working chambers of bellows type 1 (one of such chambers is shown). Each chamber 1 is equipped with suction 2 and pressure 3 valves and suction 4 and pressure 5 pipelines. Working chamber 1 is connected to a drive device made in

the form of a variable volume enclosing hermetic drive chamber 6 also of a bellows type, with the movable 7 and the fixed 8 walls of the working 1 and the driving 6 chambers made respectively common. The drive chamber 6 is immersed under the level of warm water 9 in the pond. The stationary wall 8 of the working chamber 1 is connected with height-adjustable supports 10, and valves 2 and 3 pipes 4 and 5 are mounted in it. The movable wall 7 of the drive chamber 6 is made in the form of a heat exchanger 11, partially filled as a heat-sensitive working fluid with 12 gas solution (for example, ammonia, acetylene) in a liquid solvent that absorbs this gas well (for example, in water, acetone, respectively), and the solubility of the gas in the solvent varies with temperature. The cavity of the heat exchanger 11 is connected to the cavity of the drive chamber 6 by holes 13, with the movable wall 7 of the chamber 6 located at the interface between the warm water 9 and the cold environment at a temperature in the heat exchanger 11 equal to the average temperature between the temperatures of water 9 and the environment. All walls of working 1 and drive 6 chambers for reducing heat losses are made of heat conductive, except for the moving wall 7 of the drive chamber 6, which has a low heat capacity and high heat conductivity for heat exchange of the working fluid 12 with warm water 9 and a cold environment. These media, the temperature difference between which is used, can be thermally insulated by the thermal insulating plane 14.

If there is a temperature difference between water 9 and the environment, the device works as follows.

Being in an environment with elevated temperature (in warm water 9), the heat exchanger 11 heats up, the temperature of the heat exchanger contents, such as aqueous ammonia, rises. Ammonia is released from the solution, the pressure in the drive chamber 6 increases, its volume increases, the distance between walls 7 and 8 also increases, water through valve 2 and pipe 4 is sucked into working chamber 1. Po. As the contents of the heat exchanger 11 are heated, the wall 7 is removed from the fixed wall 8 and crosses the interface between the media, the temperature difference between which is used. The heat exchanger 11 enters the medium with reduced temperatures, its contents are cooled, the solubility of ammonia in the solution increases, ammonia is absorbed by the aqueous solution, the pressure in the transfer chamber b decreases, the volume of chamber 6 decreases, the working chamber 1 compresses.

chamber 1 is injected through valve 3 into pipe 5, and wall 7 moves as the contents of the heat exchanger 11 cool to the interface and intersects it. Once again in an environment with elevated temperature, the heat exchanger 11 is heated, and the process is repeated again.

In the absence of a temperature difference between water 9 and the environment, the device described operates using wave energy, while compression and expansion of chambers 1 and 6 occurs due to a change in water pressure 9 at the location of these chambers when waves pass over them.

Thus, the possibility of operation of the described device using both the energy of the water and heat energy, due to the difference in water temperature and the environment. Provides expansion of its application area. The most expedient area of its use at low waves or in its absence is for aeration and intensification of heat exchange between water and air in reservoirs used as coolers. If the amplitude of the wave in the reservoir is more than 0.5 m, the device can be used for other purposes, in particular, for the accumulation of potential water energy.

Claims (2)

1 · VOLUME WAVE PUMP by ed. St. No. 505820, characterized in that, in order to expand the scope by using the difference in temperature of water and the environment to obtain useful work, the movable wall of the chamber of the drive device is made in the form of a heat exchanger partially filled with a heat-sensitive working fluid, the cavity of the heat exchanger is connected to the cavity of the drive chamber devices with openings, the movable wall of the chamber of the latter being located at the interface between warm water and cold ambient medium at a temperature in the heat exchanger equal to Secondary temperature between the water temperatures and the environment. 2. The pump according to π. 1, characterized in that all the walls of the chambers, except for the movable wall of the chamber of the drive device, are made insulating.