A device for converting mechanical energy into thermal energy

 

(57) Abstract:

The invention is intended for converting mechanical energy into thermal energy and can be used in the heat. The inventive device the casing is hermetically sealed and has an end node coupling to an external drive, porous fuel element is designed in the form of a piston, reciprocating movement relative to the housing, and an inner actuator is a rod movable relative to the housing, one end of which is articulated with a porous piston and the other end side via end node coupled to the external drive. In the reciprocating movements of the porous piston relative to the sealed enclosure filled with the working fluid, due to the Joule-Thomson it is heated to a predetermined arbitrarily high temperature. 1 C.p. f-crystals, 1 Il.

The invention relates to the field of power engineering, in particular to a device for converting mechanical energy into thermal energy.

It is known a device for converting the kinetic energy of the fluid flow in heat, which includes a housing, an internal drive system (hydraulic Tuulikki brake (and. C. the USSR N 989267, CL F 24 J 3/00, 1983).

The device operates as follows. Hydraulic turbine and pump dispersing the working fluid relative to the body and direct it to a hydraulic brake, where the brake fluid. In the kinetic energy of the flow is converted into heat, and the heated liquid through the piping is delivered to the external customer.

The main disadvantage of the known device is the low mechanical efficiency of the internal drive system. Another disadvantage of the known device is the low efficiency of conversion of kinetic energy of fluid flow in heat, because of the relatively small coefficient of friction of a liquid jet with the surrounding liquid and undeveloped heating surface. In addition, some of the energy supplied from the external drive, is spent on further movement of fluids through pipelines to external customers.

Another known device for converting mechanical energy into thermal energy also consists of a housing, an internal drive system, the working fluid and fuel element in which use two friction disk, oosthuizen and fixed in the housing, the other is rotatable and includes lateral lobes. The device operates as follows. During the rotation of the rolling disk is relatively fixed in the place of their contact occurs, heat is generated, which through the side of the blade is transferred to the working fluid. The rotary disk connected via an internal drive system with external torque actuator, is arranged so that with increasing speed of rotation is increasingly pressed against the stationary disk.

The main disadvantages of the known device is the low efficiency of conversion of mechanical energy into thermal energy, which occurs in the fuel element. It depends on the condition of the surfaces and the area of contact between the disk and the rotation speed of the rotary disk.

Closest to the proposed invention is a downhole choke heater, which consists of a casing, an internal drive system (high pressure pump), the working fluid and fuel element (kN. CHEKALYUK E. B. Thermodynamics, oil Plata, M., "Nedra", 1965, s 218, 219, 224.) As the fuel element is fixed relative to the body of the porous nozzle, through which using namasivaya.

The main disadvantage of the known devices is the very low growth temperature, which is limited by the pressure pump and, accordingly, the strength of the hull.

For example, it is easy to calculate that for o adiabatically isolated heater filled with water, when the pressure drop in porous piston, equal to 0.2 MPa (pressure uicide pump must be higher), the maximum growth temperature is negligible and does not exceed 0,05oC. When the pressure drop in porous piston is equal to 10 MPa (pressure uicide pump must be greater than 10 MPa), the maximum increase in temperature will have 2.2oC.

The purpose of the present invention is to increase the heating temperature of the working fluid.

This objective is achieved in that in the known device the casing is hermetically sealed and has an end node coupling to an external drive, and porous fuel element is designed in the form of a porous piston, reciprocating movement relative to the housing. Internal drive is a rod movable relative to the housing, one end of which is articulated with a porous piston, and what about the piston relative to the sealed enclosure, filled with the working fluid, in accordance with the Joule-Thomson it is heated to a predetermined arbitrarily high temperature.

If instead of working fluid case is filled with gaseous agent, then there is a corresponding cooling device.

The growth temperature for o adiabatically isolated case is determined by the number of moves porous piston per unit time and the characteristics of the piston and of the working fluid from the following dependence: T = nP,

where T is the integral gain temperatureoC.

- integral coefficient Joule-ThomsonoC/PA,

n is the number of strokes per unit of time, 1/sec

- duration of heating, sec,

P - is the pressure loss in the porous piston, PA.

For example, if the speed of the piston is equal to 1-fly/sec, for conditions similar to those adopted above for the known device, will get that when the pressure drop in porous piston, equal to 0.2 MPa, the temperature rise in the 100oC is reached after 38 minutes, Respectively, when the pressure drop in porous piston is equal to 10 MPa, the temperature rise in the 100oC is reached after 45 sec.

Diagram of the device for converting fur is trojstvo consists of a sealed housing (1), completely filled with the working liquid (2) or gas, on the end surface of which there is a pressure node of the output shaft (3) and its articulation with the external torque actuator (4), and on the inner side of the other end surface of the support node of the rotation shaft (5). On the inner side surface of the housing has a longitudinal rail slide (6) porous piston (7) which is fixed in its longitudinal grooves (8). The drive system is a rod (9) surface with a screw threaded end (10) through which pressurized output node (3) is gated out and articulated with external torque actuator (4). The other end of the rod is inside the housing and is included in the reference node of rotation (5). Porous piston has an internal articulation (11) surface with a screw threaded rod (9). The outer cylindrical surface of the piston are longitudinal grooves (8), into which are inserted the longitudinal rails of the slide (6).

The device operates as follows.

During the rotation of the external drive (4) through the joint, located in the node (3), comes into rotational movement of the rod (9) and the surface of the screw-thread (10). The other end of the rod is included in the reference node of rotation (5) inside a sealed enclosure is the emotional movement of the porous piston (7). Thus the longitudinal slats slide (6) the body, which includes in longitudinal grooves (8) of the porous piston, hold the latter from turning relative to the housing (1). In the reciprocating movements of the porous plunger (7) relative to the working fluid, (2) filling the sealed body (1), it is heated to a predetermined arbitrarily high temperature.

1. A device for converting mechanical energy into thermal energy, which consists of a body, filled with the working fluid or gas, the internal drive and porous fuel element, characterized in that the housing is hermetically sealed and has an end node coupling to an external drive, porous fuel element is designed in the form of a piston, reciprocating movement relative to the housing, and an inner actuator is a rod movable relative to the housing, one end of which is articulated with a porous piston and the other end side via end node is connected with an external drive.

2. The device under item 1, characterized in that the inside of the housing has end anchor node rotation in the side surface of the longitudinal rail slides, and urasawa piston is screw joint surface with a screw threaded stem, and on its outer cylindrical surface located longitudinal grooves, which are inserted in the longitudinal slats slide.

 

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