WO2015106658A1

WO2015106658A1 - Liquid piston hot air engine

Info

Publication number: WO2015106658A1
Application number: PCT/CN2015/070493
Authority: WO
Inventors: 杨永顺
Original assignee: 博尔塔拉蒙古自治州万力源科技开发有限责任公司
Priority date: 2014-01-17
Filing date: 2015-01-12
Publication date: 2015-07-23

Abstract

Disclosed is a liquid piston hot air engine. The liquid piston hot air engine comprises a first air cylinder (15), a second air cylinder (13), a heater (16), a heat regenerator (17), a cooler, and a power output pipe (19). Liquid pistons in communication with bottoms are disposed inside the first air cylinder and the second air cylinder. The heater, the heat regenerator and the cooler are sequentially connected. The first air cylinder is connected to the heater, and the second air cylinder is connected to the cooler. The cooler comprises an air-cooling pipeline (12) exposed in air, a water-cooling pipeline (14) connected to the air-cooling pipeline, and a water jacket (11) covering the water-cooling pipeline. The liquid piston hot air engine has a good cooling effect and stably works.

Description

Liquid piston heat engine

Technical field

This invention relates to a hot air machine, and more particularly to a liquid piston hot air machine.

Background technique

The heat engine is an externally fired closed-loop reciprocating piston heat engine. It was also invented in Stirling, Scotland in 1816. It is also called the Stirling engine, also known as a hot air machine or an external combustion engine. Since the hot air machine avoids the problem of the shocking work of the conventional internal combustion engine, low noise, low pollution and low running cost are realized. The power and efficiency of the hot air machine is not affected by altitude and is ideal for use at high altitudes.

The hot air chamber, the heater, the regenerator, the cooler and the cold chamber of the hot air machine are sequentially connected with each other to form a gas passage, and the heater is heated by an external heat source, so that the gas in the gas passage is in the cold chamber and the hot chamber. The reciprocating motion expands and contracts, and the power is output through the transmission mechanism to perform work. The piston used in a hot air machine is usually a solid piston.

When a solid state piston is used in a hot air machine, it has the disadvantages of being easy to wear, high noise, and poor sealing performance, and has a complicated processing process and high cost. The heat engine using a liquid piston is still in the research stage.

The publication number is CN103321775A (hereinafter referred to as Document 1), the Chinese invention patent entitled "Boiler and its Liquid Piston Heater", discloses a liquid piston heat engine, as shown in Figure 1 (ie Figure 2 in Document 1). Shown therein by reference numeral 12), which includes a first cylinder 15, a second cylinder 13, a heater 16, a regenerator 17 and a cooler 11, the first cylinder 15 and the second cylinder 13 having a bottom communication The liquid piston; the heater 16, the regenerator 17 and the cooler 11 are connected in sequence, the first cylinder 15 is connected to the heater 16, the second cylinder 13 is connected to the cooler 11; the power output pipe 19 of the liquid piston hot air machine The first end has a power output port extending into the first cylinder 15 or connected to the bottom of the first cylinder 15 to output a reciprocating power outward through the second end of the power output tube 19, for example, through the valve body 10 outward. Output a reciprocating power.

The liquid piston hot air machine of Document 1 has the advantages of low noise, good sealing performance and no wearing parts, free from routine maintenance, simple processing technology and low cost. The research of the hot air machine of the liquid piston has entered the application stage.

However, in the liquid piston heat engine of Document 1, the cooler 11 needs to be cooled by the cooling water, and the outlet of the cooler 11 is connected to the water circulation system of the boiler to provide cooling for the cooler 11 by the return water of the boiler water circulation system. water. In the initial stage of boiler operation, the cooling effect of the cooler 11 is better because the return water temperature of the boiler is lower; and after the boiler is operated for a period of time, as the temperature of the return water rises, it will be much higher than the room temperature, which will reduce the cooling. The cooling effect of the device 11, which in turn affects the stability and power of the operation of the hot air machine.

In order to overcome this problem, it is possible to supplement the cooling water from the outside of the water circulation system of the boiler to the cooler 11, which can improve the cooling effect of the cooler 11, but increases the water fee and is very valuable in water resources. At the moment, such processing seems to be worth the candle.

Summary of the invention

In view of the problems existing in the prior art, the object of the present invention is to provide a liquid piston hot air machine with good cooling effect, stable operation, and water saving and environmental protection.

In order to achieve the above object, the technical solution of the present invention is as follows:

A liquid piston hot air machine comprising a first cylinder, a second cylinder, a heater, a regenerator, a cooler and a power output tube, wherein the first cylinder and the second cylinder have a liquid piston communicating with a bottom; a heater, a regenerator and a cooler are connected in series, the first cylinder is connected to the heater, and the second cylinder is connected to the cooler; the cooler comprises: an air-cooled tube exposed to the air a water-cooled line connected to the air-cooled line; and a water jacket covering the water-cooled line.

The utility model has the beneficial effects that the liquid piston hot air machine of the invention maintains the noise of the existing liquid piston hot air machine, has good sealing performance, does not contain wearing parts, is free from daily maintenance, has simple processing technology and low cost. advantage. Moreover, the cooling effect of the cooler is enhanced, so that the whole hot air machine has better running condition, higher running efficiency, and achieves the purpose of water saving and environmental protection.

DRAWINGS

1 is a perspective view of a prior art liquid piston hot air machine.

2 is a perspective view of a liquid piston hot air machine according to a first embodiment of the present invention.

Fig. 3 is a front cross-sectional view showing the liquid piston heat engine of the first embodiment of the present invention.

4 is a perspective view of a liquid piston hot air machine according to a second embodiment of the present invention.

Fig. 5 is a front elevational view showing a liquid piston heat engine according to a second embodiment of the present invention.

Figure 6 is a front cross-sectional view showing a liquid piston heat engine according to a second embodiment of the present invention.

detailed description

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly, the present invention will be further described in detail below with reference to specific embodiments. It should be noted that the specific embodiments described herein It is intended to be merely illustrative of the invention and is not intended to limit the invention.

The liquid piston hot air machine of the present invention is not limited to use in a boiler, and may be applied to other applications requiring reciprocating power, for example, to power a linear generator.

The liquid piston hot air machine of the two embodiments of the present invention will be specifically described below. The liquid piston hot air machine according to the embodiment of the present invention, the components not described below, may be the same components in Document 1, and will not be described again.

1. The liquid piston hot air machine of the first embodiment

As shown in FIG. 2 and FIG. 3, the liquid piston hot air machine according to the first embodiment of the present invention mainly includes a first cylinder 15, a second cylinder 13, a heater 16, a regenerator 17, a cooler, a power output pipe 19, and the like. The main components.

Wherein, the cooler comprises a water-cooled pipeline 14, an air-cooled pipeline 12 and a water jacket 11. Among them, the water jacket 11 and the water cooling pipeline 14 may be collectively referred to as a water cooling device. The air-cooled line 12 is directly exposed to the outside air for cooling; and the water-cooled line 14 is cooled by the cooling water in the water jacket 11 of the water-cooled line 14.

In general, the heater 16, the regenerator 17, the water-cooling line 14 and the air-cooling line 12 are connected in series, wherein the outer casing of the regenerator 17 and the water jacket 11 are connected by a flange 170 at the flange 170. In the chamber, the water-cooling line 14 is in gaseous communication with the regenerator 17. The first cylinder 15 is connected to the heater 16. Since the shape of the main body of the first cylinder 15 is a cylinder and the heater 16 is in the shape of two rows of a plurality of heating tubes, in this embodiment, the top end of the first cylinder 15 The cross section gradually changes to accommodate the cross-sectional shape of the heater 16. The second cylinder 13 is connected to the end of the air-cooling line 12 via a flange 130.

The first cylinder 15 and the second cylinder 13 are connected by a flange 150, and the first cylinder 15 and the second cylinder 13 have a liquid piston in liquid communication. In the operating state, the heater 16, the regenerator 17 and the cooler described above have a closed gas as a working medium. The closed gas is atmospheric pressure filled or pressurized filled air. When the operating temperature of the hot air machine is high, the closed gas is preferably hydrogen, helium and nitrogen to avoid oxygen in the air and the first cylinder 15 and the second cylinder 13 The liquid in the liquid piston reacts chemically.

The first cylinder 15 may be referred to as a hot cylinder and the second cylinder 13 may be referred to as a cold cylinder. The liquid level in the first cylinder 15 and the second cylinder 13 is the highest at the top of each cylinder, and the lowest is the upper edge position of the power outlet.

The cooler of the liquid piston hot air machine of the embodiment of the present invention is specifically described below:

The water-cooled pipeline 14 includes a plurality of central tubes, and the plurality of the central tubes are divided into two sections, an upper section 143 and a lower section 142, and the central tubes of the upper section 143 are arranged in a single row to facilitate heat dissipation. The lower section 142 is evenly distributed in a circle to facilitate connection with the regenerator 17; therefore, the water-cooled line 14 as a whole exhibits a transition from a circularly uniform distribution to a single row of multiple roots. Adapting to the shape transition of the water-cooled pipeline 14, the cross section of the water jacket 11 is circular The transition to the rectangle can be achieved by making one end of a circular tube into a square tube. In addition, the central tube arrangement of the upper section 143 may also be a double row or a plurality of rows of a plurality of flat and wide multi-row structures.

The bottom end of the water jacket 11 has a water inlet 110, and the top end of the water jacket 14 has a water outlet 111. Since the cooling water runs from bottom to top, a power is required. The water inlet 110 may be connected to a branch of the power output pipe 19 when the power output pipe 19 is not connected to other equipment, so that the power of the cooling water in the water jacket 11 is provided by the power output pipe 19.

The air-cooled pipeline 12 includes a circular arc section 121, a heat radiating section 122, and a transition section 123, wherein the circular arc section 121 is connected to the upper section 113 of the water-cooled pipeline 14, and the heat-dissipating section 122 and the circular arc section 121 are single-row and multiple-row. The form is different only in shape, the heat dissipating section 122 is a straight pipe, and the shape of the transition section 123 is evenly distributed in a circle so as to be connected to the top end of the second piston 13. The air-cooled pipeline 12 is also in the form of a plurality of central tubes for increasing the heat dissipation area and improving the cooling effect.

Second, the liquid piston hot air machine of the second embodiment

The liquid piston heat engine of this embodiment differs from the first embodiment in that, as shown in Figs. 4-6, the water jacket 11 is cylindrical and is convenient for mass production. The water-cooling pipe 14 can be in the same form as the first embodiment, or a central pipe arrangement uniformly distributed in a circle from top to bottom, as shown in FIG.

The liquid piston hot air machine of the above two embodiments of the present invention can supply power to the linear generator, and can connect the hydraulic cylinder through the power output pipe 19, and connect the linear generator through the piston of the hydraulic cylinder, wherein the piston in the hydraulic cylinder needs to select solid. The piston, that is, the liquid piston hot air machine of the embodiment can provide reciprocating power to the linear generator to cause the linear generator to generate electricity. A diaphragm pump may be provided at the end of the power output tube 19 to be connected to the linear generator to provide reciprocating power to the linear generator to cause the linear generator to generate electricity.

The embodiments described herein are to be understood as illustrative and not restrictive. The scope of the present invention is defined by the scope of the claims, and is intended to be

Claims

A liquid piston hot air machine comprising a first cylinder, a second cylinder, a heater, a regenerator, a cooler and a power output tube, wherein the first cylinder and the second cylinder have a liquid piston communicating with a bottom; a heater, a regenerator and a cooler are connected in series, the first cylinder is connected to the heater, and the second cylinder is connected to the cooler; wherein the cooler comprises:

Air-cooled piping exposed to air;

a water-cooled line connected to the air-cooled line;

a water jacket covering the water-cooled pipeline.
A liquid piston heat engine according to claim 1, wherein said power output pipe has a first end and a second end, said first end being connected to said first cylinder, said power output pipe passing through The second end outputs a reciprocating power outward.
The liquid piston heat engine according to claim 1, wherein one end of the water-cooling pipe that is not connected to the air-cooling pipe is connected to the regenerator, and the air-cooling pipe is not One end of the water-cooled pipe connection is connected to the second cylinder.
The liquid piston heat engine according to claim 2, wherein the bottom end of the water jacket has a water inlet, and the top end of the water jacket has a water outlet.
A liquid piston heat engine according to claim 4, wherein said water jacket is cylindrical.
A liquid piston heat engine according to claim 2, wherein said water jacket has a circular cross section, said water cooling conduit comprises a plurality of central tubes, and said plurality of said central tubes are uniformly distributed within a circle distributed.
A liquid piston heat engine according to claim 2, wherein said water jacket has a cross section that transitions from a circular shape to a rectangular shape, said water cooling circuit includes a plurality of central tubes, and said plurality of said central tubes are formed by a circle The pattern is evenly distributed to a single row and multiple roots.
A liquid piston heat engine according to claim 6, wherein said air-cooling line comprises a circular arc section connected to said water-cooled pipeline, a plurality of single-discharge heat-dissipating sections, and uniformly distributed in a circular shape. Transition section.
A liquid piston heat engine according to claim 6, wherein said air-cooling line comprises a circular arc section connected to said water-cooled pipeline, a plurality of rows of heat-dissipating sections, and uniformly distributed in a circular shape. Transition section.
A liquid piston heat engine according to claim 4, wherein said water inlet is connected to said power output pipe to provide power for circulating cooling water in said water jacket by said power output pipe.