WO2014202028A1

WO2014202028A1 - Liquid piston stirling engine and boiler having same

Info

Publication number: WO2014202028A1
Application number: PCT/CN2014/080434
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: 2013-06-20
Filing date: 2014-06-20
Publication date: 2014-12-24
Also published as: CN103321775A; CN103321775B

Abstract

Disclosed are a liquid piston stirling engine and a boiler having the same. The liquid piston stirling engine comprises a first cylinder, a second cylinder, a heater, a heat regenerator and a cooler, wherein liquid pistons of which the bottoms are in communication with each other are arranged in the first cylinder and the second cylinder; the heater, the heat regenerator, and the cooler are connected together in sequence, the first cylinder is connected with the heater, and the second cylinder is connected with the cooler; and the liquid piston stirling engine also comprises a power output tube, wherein the first end of the power output tube is provided with a power output port, and the power output tube is extended into the first cylinder or connected to the bottom of the first cylinder to output the back-and-forth power outwards through the second end of the power output tube. The liquid piston stirling engine and the boiler using same in the present invention have low costs, less noise, and energy saving and environment protection.

Description

Liquid piston hot air machine and boiler having the same

The present invention relates to a heat engine and a boiler, and more particularly to a liquid piston heat engine and a boiler having the liquid piston heat engine. Background technique

The heat engine is an externally fired closed-loop reciprocating piston heat engine. It was invented in 1816 for the Stirling of Scotland, and is also called the Stirling engine, also known as the hot air machine. The medium that transfers energy in a hot air machine (usually a high-pressure gas) is called a working fluid, and is filled with a certain volume of working fluid in one, two, four or more closed cylinders. One end of the cylinder is a hot chamber and the other end is a cold chamber. The working medium is compressed in a low temperature cold chamber, and then flows into a high temperature hot chamber for rapid heating and expansion work. The heat generated by the continuous combustion of the fuel in the combustion chamber outside the cylinder or the external heat source is transmitted to the working fluid through the heater, so the working fluid is not directly involved in the combustion and does not need to be replaced.

Since the heat engine avoids the problem of the shocking work of the conventional internal combustion engine, low noise, low pollution and low operating cost are achieved. The hot air machine can burn various combustible gases, such as natural gas, biogas, petroleum gas, hydrogen, gas, etc. It can also burn liquid fuels such as diesel and liquefied petroleum gas, burn wood, and use solar energy. As long as a certain temperature difference is reached between the hot chamber and the cold chamber, the hot air machine can perform the work. The lower the ambient temperature, the easier the temperature difference becomes. Therefore, when used for power generation, the power generation efficiency is higher. The biggest advantage of the hot air machine is that the power and efficiency are not affected by the altitude, which is very suitable for high altitude use.

The hot chamber, the heater, the regenerator, the cooler and the cold chamber are sequentially connected to each other to form a gas passage, and the heater is heated by an external heat source to make the gas in the gas passage in the cold chamber Reciprocating expansion and contraction with the hot chamber to drive the piston to work through the periodic motion of the crankshaft to which the hot air machine is connected. 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.

In addition, the boiler is an important living equipment. When it is heating, the circulating water system of the boiler needs power. The traditional circulating water system uses the electric water pump as a power source, but the electric water pump has the disadvantage of high noise, and its internal Consumables require routine maintenance and affect the ease of use. And can't work when power is off. Boilers are usually powered by coal or natural gas, while pumps are powered by electricity, without adequate and rational use of energy, not for energy conservation and environmental protection. Force. Summary of the invention

In view of the problems in the prior art, it is an object of the present invention to provide a liquid piston hot air machine which is low in cost, low in noise and energy-saving.

Another object of the present invention is to provide a boiler having the liquid piston hot air machine of the present invention.

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

A liquid piston hot air machine includes a first cylinder, a second cylinder, a heater, a regenerator and a cooler, wherein the first cylinder and the second cylinder have a liquid piston communicating with the bottom; the heater, back The heat exchanger and the cooler are connected in sequence, the first cylinder is connected to the heater, and the second cylinder is connected to the cooler; the liquid piston hot air machine further comprises: a power output pipe, the power output pipe The first end has a power output port extending into the first cylinder or connected to the bottom of the first cylinder to output a reciprocating power outward through the second end of the power output tube.

In the liquid piston hot air machine of the present invention, preferably, the second end of the power output pipe is connected to a chamber of a valve body, the valve body has a liquid inlet and a liquid outlet, and the chamber and the inlet a first one-way valve is disposed between the liquid ports, and a second one-way valve is disposed between the chamber and the liquid outlet, and the reciprocating power provided by the power output tube passes through the liquid entering the liquid inlet The chamber is pumped from the liquid outlet, and the distance between the power outlet and the liquid surface of the liquid piston in the first cylinder is smaller than the distance from the liquid surface of the liquid piston in the second cylinder. The power outlet is disposed at a lowest liquid level of the first cylinder.

In the liquid piston heat engine of the present invention, preferably, the liquid of the liquid piston is water, a heat transfer oil or a heat transfer liquid, or the liquid of the liquid piston is a heat transfer oil or a heat transfer liquid of a certain height of a surface layer of water and water.

In the liquid piston hot air machine of the present invention, preferably, the heater, the regenerator and the central axis of the first cylinder are on a first straight line, the first straight line and the second cylinder The central axis and the central axis of the cooler enclose a triangle.

In the liquid piston hot air machine of the present invention, preferably, the first cylinder is L-shaped, and the central axis of the heater, the regenerator and the first cylinder is on a first straight line, the A line is parallel to the central axis of the second cylinder.

In the liquid piston heat engine of the present invention, preferably, the outer diameter of the first cylinder is equal to or smaller than the outer diameter of the second cylinder.

In the liquid piston heat engine of the present invention, preferably, the height of the first cylinder is equal to or greater than the difference between the highest liquid level and the lowest liquid level in the first cylinder.

The liquid piston hot air machine of the present invention, preferably, the initial ratio of liquid to gas in the liquid piston hot air machine For 6: 1-8: 1

In the liquid piston heat engine of the present invention, preferably, the power output tube has an L shape.

In the liquid piston heat engine of the present invention, preferably, between the cooler and the second cylinder, the second cylinder and the first cylinder are connected by a live connection, and the two ends of the joint are taken out. The inner diameter of the tube is smaller than the inner diameters of the cooler housing, the first cylinder, and the second cylinder.

In the liquid piston hot air machine of the present invention, preferably, the upper limit of the liquid level in the first cylinder is the bottom end of the heater, and the lower limit of the liquid level is higher than the power outlet.

In the liquid piston hot air machine of the present invention, preferably, the heater, the regenerator, the cooler, the first cylinder and the second cylinder are both made of a metal material, and the connecting pipe connecting the first cylinder and the second cylinder The plastic power material is made of plastic material.

In the liquid piston heat engine of the present invention, preferably, the second end of the power output pipe is connected to the linear generator through a diaphragm pump or a piston of a hydraulic cylinder.

In the liquid piston heat engine of the present invention, preferably, the first end of the cooler is higher or lower than the jth of the cooler

The boiler of the present invention has the liquid piston heat engine of the present invention.

In the boiler of the present invention, preferably, the boiler is a flue gas direct-discharge type boiler, and an upper through hole and a lower through hole are opened in a flue of the boiler, and the heater of the liquid piston hot air machine is disposed in the In the flue, an upper end of the heater is sealingly connected to the upper through hole, and a lower end of the heater is sealingly connected to the lower through hole.

In the boiler of the present invention, preferably, the boiler is a return type boiler, a top surface of the flue is provided with a top surface through hole, and a side of the flue is provided with a side through hole, the liquid piston hot air machine The heater and the first cylinder are disposed in the flue, the upper end of the heater is sealingly connected to the top surface through hole, and the lower end of the first cylinder is sealingly connected to the side through hole.

The beneficial effects of the invention are as follows: The liquid piston hot air machine of the invention has low noise, good sealing performance, does not contain wearing parts, is free from routine maintenance, has simple processing technology, and reduces the cost of the hot air machine. The research of the hot air machine of the liquid piston has entered the application stage. The boiler of the present invention having the liquid piston hot air machine of the present invention does not require other forms of energy to power the circulating water system of the boiler during heating, and overcomes the disadvantages of the noise of the electric water pump and the need for daily maintenance, and increases Convenience of use. Further, the backwater of the water circulation system of the boiler is used as the cooling water for the cooler, and the liquid piston heat engine is used as the power of the water circulation system of the cooler, and also serves as the power of the water circulation system of the entire boiler, and the energy is fully utilized and improved. Energy conversion efficiency, energy saving and environmental protection. DRAWINGS

1 is a perspective view of a liquid piston heat engine according to a first embodiment of the present invention.

Fig. 2 is a front elevational view showing the liquid piston heat engine of the 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.

Figure 4 is a cross-sectional view taken along line A-A of Figure 3.

Figure 5 is a cross-sectional view taken along line B-B of Figure 3.

Fig. 6 is a front cross-sectional view showing the boiler of the first embodiment of the present invention.

Fig. 7 is a left side sectional view showing the boiler of the first embodiment of the present invention.

Figure 8 is a perspective view of a liquid piston heat engine according to a second embodiment of the present invention.

Figure 9 is a front elevational view showing a liquid piston heat engine according to a second embodiment of the present invention.

Figure 10 is a front cross-sectional view showing a liquid piston heat engine according to a second embodiment of the present invention.

Figure 11 is a front cross-sectional view showing a boiler according to a second embodiment of the present invention.

Figure 12 is a left side cross-sectional view showing a boiler according to a second embodiment of the present invention.

Figure 13 is an axial cross-sectional view of a cooler in a liquid piston hot air machine in accordance with a second embodiment of the present invention.

Figure 14 is a cross-sectional view of a cooler in a liquid piston hot air machine in accordance with a second embodiment of the present invention. detailed description

In order to make the technical problems, technical solutions, and advantageous effects of the present invention more comprehensible, 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 are merely illustrative of the invention and are not intended to limit the invention.

A liquid piston hot air machine according to an embodiment of the present invention is used for the boiler of the present invention; the boiler of the embodiment of the present invention has the liquid piston hot air machine of the embodiment of the present invention. However, the liquid piston heat engine of the present invention is not limited to the boiler used in the present invention, and can be applied to other applications requiring reciprocating power, for example, to power a linear generator.

First, a liquid piston hot air machine according to two embodiments of the present invention will be described, and a boiler of two embodiments of the present invention will be described. 1. The liquid piston hot air machine of the first embodiment

As shown in FIG. 1, a liquid piston heat engine 1 according to a first embodiment of the present invention mainly includes a first cylinder 15, a second cylinder 13, a heater 16, a regenerator 17, a cooler 11, a power output pipe 19, and a valve. Main components such as the body 10, and auxiliary members such as the communication tube 14, the connecting tube 12, and the elbow 18. In general, the heater 16, the regenerator 17 and the cooler 11 are connected in series, wherein the regenerator 17 and the cooler 11 are connected by a bend 18, and the first cylinder 15 is connected to the heater 16, second The cylinder 13 and the cooler 11 are connected by a connecting pipe 12; the first cylinder 15 and the second cylinder 13 have There is a liquid piston that is in fluid communication through the communication tube 14. In the operating state, the heater 16, the regenerator 17 and the cooler 11 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 components of the liquid piston heat engine 1 of the embodiment of the present invention will be specifically described below:

The valve body 10 has a chamber 100, a liquid inlet 102 and a liquid outlet 101. A one-way valve is arranged between the chamber 100 and the liquid inlet 102, and another chamber is provided between the chamber 100 and the liquid outlet 101. A one-way valve, the cavity 100 is disposed between the two one-way valves, the bottom end of the power output pipe 19 is connected to the chamber 100 of the valve body 10, and the reciprocating power provided by the power output pipe 19 can be from the liquid inlet The liquid entering the port 102 (e.g., the circulating water of the boiler, usually the return water side) is pumped out of the liquid outlet 101 through the chamber 100. The valve body 10 is generally vertically or horizontally disposed, and the inlet port 102 will generally be lower than the outlet port 101 when it is not horizontally disposed. At the same time, the reciprocating power described above can also power the operation of its own cooler 11.

The power output pipe 19, as shown in Figs. 1 and 3, is divided into an upper section 151 extending into the first cylinder 15 and a lower section 190 for connecting the valve body 10 outside the first cylinder 15, and the top end of the upper section 151 is a power outlet. 152. The reciprocating power of the liquid piston heat engine 1 is outputted to the valve body 10 through the power output pipe 19 through the power output port 152, thereby pushing the liquid in the valve body 10 to be pumped out from the liquid outlet 101. The upper section 151 and the lower section 190 are connected by a joint or flange 191. If it is not desired to mix the liquid in the liquid piston heat engine 1 with the liquid in the valve body 10, a diaphragm pump may be provided at the interface of the chamber 100 and the lower section 190 to separate the liquid without affecting the transmission of power.

The first cylinder 15 and the second cylinder 13, as shown in Fig. 1, the first cylinder 15 is vertically disposed, and the second cylinder 13 is obliquely disposed, and the material thereof is metal. The liquid of the liquid cylinder in the lumen 150 of the first cylinder 15 and the lumen 130 of the second cylinder 13 may be all water, and may be all heat transfer oil or thermal fluid, or may be in the first cylinder 15 and the second cylinder 13 The surface of the water is added with a non-volatile, high-temperature resistant liquid medium of a certain height (for example, 20 cm), such as a heat transfer oil or a thermal fluid, to form a liquid piston, which serves to reduce or prevent direct contact of water with the inner wall of the heater 16. Avoid changing the gas-liquid ratio in the hot air machine due to the gasification of water. In the present embodiment, the height of the first cylinder 15 is lower than the height of the second cylinder 13 (the height of the cylinder is based on the top end of the axial center line of the cylinder), and this height difference may be equal to the outer diameter of the second cylinder 13.

The communication tube 14 includes a lead-out tube 142, a joint 141 and a lead-out tube 140. The lead-out tube 142 at the bottom end of the first cylinder 15 is for communicating with the second cylinder 13, and at the same time, the lead-out tube 140 at the bottom end of the second cylinder 13 For communicating with the first cylinder 15, the joint 141 connects the outlet pipe 142 and the outlet pipe 140, and the joint 141 or the flange. The function of the joint 141 or the flange is to increase the ease of installation of the liquid piston heat engine 1 of the embodiment of the present invention. After the first cylinder 15 and the liquid piston of the second cylinder 13 are communicated by the communication pipe 14, the two cylinders can share the liquid of the liquid piston. In order to increase the heat receiving area of the heater 16, as shown in FIG. 3, the heater 16 includes three metal tubes 161, 162, and 163, but not limited thereto, and a plurality of metal tubes may be used. In this embodiment, in order to facilitate the connection of the heater 16 to the boiler of the embodiment of the present invention, a lands (or connecting flanges) 165, 167 are respectively disposed at both ends of the heater 16, and the connecting plates may be circular, square or elliptical. Shape and so on.

The regenerator 17 may also be referred to as a regenerator, and the regenerator 17 is made of a metal material. The cavity 170 of the regenerator 17 may be provided with a built-in metal mesh or the like, and the built-in material is arranged to increase the surface area of the metal, so that the heat is generated. Fast exchange to improve the performance of the regenerator. In addition to the metal mesh, the built-in material may be a metal sheet, a multi-layer metal screen or a metal wire. If the built-in material is a metal wire, it may be a copper wire, an aluminum wire or a stainless steel wire, or a copper wire or a stainless steel wire. mixing.

The elbow 18 is used for connecting the regenerator 17 and the cooler 11, which is preferably a metal elbow material. The inner diameter of the elbow 18 is smaller than the inner diameter of the regenerator 17, and the outer diameter of the elbow 18 can be less than or equal to the cooling. The outer diameter of the device 11.

The heater 16, the first cylinder 15 and the second cylinder 13 are single-layer hollow tube structures, and the cooler 11 is a double-tube structure including a central tube 110 and a sandwich tube 111, and a central tube 110 and a lumen of the regenerator 17. The 170 gas path is connected, and is also in communication with the gas passage 130 of the second cylinder 13. The sandwich tube 111 has cooling water or coolant therein. As shown in Fig. 3, the cooler 11 has a liquid outlet at one end and a liquid inlet at the other end (the inlet and the outlet are omitted in Figs. The liquid port) is used for the inflow and outflow of the cooling water or the coolant in the sandwich tube 111. Usually, the liquid outlet is higher than the liquid inlet. Also, in order to prevent condensed water from accumulating in the center pipe 110, the cooler 11 is usually provided with a certain inclination angle so that condensed water can flow out of the cooler 11. Further, the specific internal structure in the cooler 11 can be the same as that of the liquid piston heat engine 2 of the second embodiment of the present invention, as described in the cooler 21 of the liquid piston heat engine 2 of the second embodiment. The power of the cooler 11 can be derived from the reciprocating power provided by the power output pipe 19, and the liquid outlet 101 is connected to the inlet of the cooler 11, and the outlet of the cooler 11 is connected to the water circulation system of the boiler to utilize the boiler. The return water provides cooling water to the cooler 11. The power of the cooler 11 can also be derived from an external water pump. The water pump pumps the coolant in the external hot water tank into the cooler 11. The outlet of the cooler 11 is returned to the heat sink for heat dissipation.

The connecting pipe 12 is configured to connect the second cylinder 13 and the cooler 11, and includes a lead-out pipe 121 of the cooler 11, a joint or flange 122, and a lead-out pipe 123 of the second cylinder 13, and the inner diameter of the lead-out pipe 121 is less than or equal to The inner diameter of the cooler 11, the inner diameter of the outlet pipe 121 is smaller than the inner diameter of the second cylinder 13, and the inner diameter variation is advantageous in that the condensed water in the cooler 11 can be completely discharged at any time. The take-up tube 121 and the take-up tube 123 are connected by a joint or flange 122, and a gasket such as a rubber gasket or the like is placed in the joint or the flange 122.

In the low temperature portion, that is, the lower portion 190 of the power output pipe 19 and the communication pipe 14 can be made of a plastic material, and other components are at a high temperature position, so it is preferable to use a metal material.

Next, the relationship between the components of the liquid piston heat engine 1 of the embodiment of the present invention will be described: First, the liquid piston hot air machine 1 of the present embodiment, the central axis of the heater 16, the central axis of the regenerator 17, and the central axis of the first cylinder 15 are in a straight line, the straight line and the central axis of the second cylinder 13 The central axis of the cooler 11 is surrounded by a triangle. Therefore, the liquid piston heat engine 1 of the embodiment of the present invention can be formed into a sheet-like structure to save installation space.

Meanwhile, the liquid piston heat engine 1, the outer diameter of the heater 16, the outer diameter of the cooler 11, and the outer diameter of the first cylinder 15 of the present embodiment may be equal to the outer diameter of the second cylinder 13. Further, the outer diameter of the heater 16, the outer diameter of the cooler 11, and the outer diameter of the first cylinder 15 may be equal, but both are smaller than the outer diameter of the second cylinder 13.

Next, the working principle of the liquid piston heat engine 1 of the embodiment of the present invention will be described:

First, the liquid piston heat engine 1 of the embodiment of the present invention has a first cylinder 15 having a higher temperature than the second cylinder 13, so that the first cylinder 15 may be referred to as a hot cylinder, and the second cylinder 13 may also be referred to as a cold cylinder. . Further, for the heat engine, the heater 16 and the first cylinder 15 are generally referred to as hot ends, and the cooler 11 and the second cylinder 13 are referred to as cold.

3⁄4 °

In the first step, when the hot end is heated, that is, when the heater 16 is heated, the closed gas in the liquid piston heat engine 1 is thermally expanded. When the sealed gas is thermally expanded, the liquid of the liquid pistons in the first cylinder 15 and the second cylinder 13 is pressurized and flows out through the power output port 152. The liquid of the liquid piston at both ends of the cold and hot is connected, because the power outlet 152 is close to the first cylinder 15, far from the second cylinder 13, that is, the liquid surface of the liquid piston in the first cylinder 15 from the hot end is near the cold end. The liquid level of the liquid piston in the second cylinder 13 is far, the liquid level in the first cylinder 15 is lowered rapidly, and the liquid level in the second cylinder 13 is slowed down, forming a cold end liquid level higher than the hot end liquid level. . As the temperature of the hot end rises, the closed gas is gradually stopped by thermal expansion.

In the second step, since the liquid level of the cold end is higher than the liquid level of the hot end, the liquid of the liquid piston flows from the second cylinder 13 to the first cylinder

15. The closed gas flows from the hot end to the cold end due to the pushing of the liquid piston. The closed gas flowing from the hot end to the cold end is cooled and contracted, and the liquid is subjected to a negative pressure and flows back through the power output port 152. The power outlet 152 is closer to the hot end, and the flowing liquid further increases the hot end liquid level, further increasing the flow of the gas to the cold end, and the pressure of the closed gas in the liquid piston heat engine 1 continues to decrease. The hot end liquid level is formed higher than the cold end liquid level. As the temperature decrease rate in the liquid piston heat engine 1 decreases, the closed gas gradually stops when it contracts with cold.

In the third step, since the liquid surface of the hot end is higher than the liquid surface of the cold end, the liquid of the liquid piston flows from the hot end to the cold end, and the closed gas is continuously heated by the cold end to the hot end of the hot end due to the pushing of the liquid piston. The closed gas expands with heat, the liquid piston is pressurized, flows out through the power output port 152, and the liquid is connected to the cold and hot ends. Since the power output port 152 is close to the liquid surface in the first cylinder 15, it is far from the liquid surface in the second cylinder 13. The liquid level of the hot end liquid drops rapidly, and the liquid level of the cold end liquid drops slowly, forming a cold end liquid level higher than the hot end liquid level. As long as the appropriate temperature difference between the hot and cold ends will form a periodic power and reciprocating output, the liquid piston heat engine will work stably.

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

As shown in FIG. 8 to FIG. 10, the liquid piston heat engine 2 of the second embodiment of the present invention mainly includes a first cylinder 25, a second cylinder 23, a heater 26, a regenerator 27, a cooler 21, and a power output tube. 29 and main components such as the valve body 20, and auxiliary members such as the communication pipe 24, the connecting pipe 22, and the bent pipe 28.

In general, the heater 26, the regenerator 27 and the cooler 21 are connected in series, wherein the regenerator 27 and the cooler 21 are connected by an elbow 28, and the first cylinder 25 is connected to the heater 26, second The cylinder 23 and the cooler 23 are connected by a connecting pipe 22; each of the first cylinder 25 and the second cylinder 23 has a liquid piston that is in fluid communication with the communicating pipe 24. In the operating state, the heater 26, the regenerator 27 and the cooler 21 described above have a closed gas as a working medium. The sealing gas may be air, hydrogen, helium or carbon dioxide gas.

The components of the liquid piston heat engine 2 of the embodiment of the present invention will be specifically described below, and the components are the same as those of the corresponding components of the liquid piston heat engine 1 of the first embodiment. The liquid of the first embodiment will be mainly described herein. The piston air heater 1 has a different point - the valve body 20 has a chamber 200, a liquid inlet 202 and a liquid outlet 201, the internal structure of which refers to the valve body 10, and the bottom end of the power output tube 29 is connected to the chamber 200 of the valve body 20. The reciprocating power supplied from the power output pipe 29 pumps the liquid (for example, hot water) entering from the liquid inlet port 202 from the liquid outlet port 201 through the chamber 200. The inlet port 202 will generally be lower than the outlet port 201.

The power output pipe 29 is L-shaped. As shown in FIG. 10, most of it extends into the first cylinder 25, and a small portion is outside the first cylinder 25 for connecting the valve body 20, and extends into the power output pipe 29 of the first cylinder 25. The top end is a power output port, and the reciprocating power of the liquid piston heat engine 2 is outputted to the valve body 20 through the power output pipe 29 through the power output port, thereby pushing the liquid in the valve body 20 to be pumped out from the liquid outlet port 201.

The first cylinder 25 and the second cylinder 23 in this embodiment are different from the first embodiment in that, as shown in Figs. 8 to 10, the first cylinder 25 and the second cylinder 23 are vertically disposed. In the present embodiment, also the height of the first cylinder 25 is lower than the height of the second cylinder 23 (which is based on the top end of the axial center line of the piston), and this height difference may be equal to the outer diameter of the second cylinder 23.

The communication tube 24, the communication tube 24 includes a union or flange 240, and the union or flange 240 connects the outlet tube at the bottom end of the first cylinder 25 to the outlet tube at the bottom end of the second cylinder 23. After the first cylinder 25 and the second cylinder 23 are in fluid communication through the communication pipe 24, the two pistons can share the liquid medium.

In this embodiment, as shown in FIG. 10, the heater 26 includes three metal tubes 261, 262, and 263, but does not For the limit, multiple metal tubes are available. In the present embodiment, in order to facilitate the connection of the heater 26 to the boiler of the embodiment of the present invention, a lands (or connecting flange) 270 is provided at the top end of the heater 26.

The internal structure of the regenerator 27 can be the same as that of the regenerator 17, and will not be described again.

The elbow 28 is used to connect the regenerator 27 and the cooler 21.

The cooler 21 is a double pipe structure including a center pipe 212 and a sandwich pipe 211. The center pipe 212 communicates with the pipe air path of the regenerator 27, and also communicates with the pipe air path of the second cylinder 23. The sandwich tube 211 has cooling water or cooling liquid therein, and the inner layer central tube may be one or more. As shown in FIGS. 13 and 14, the cooler 21 has an outlet chamber 215 and a liquid outlet 210 at one end. The other end has a liquid inlet chamber 214 and a liquid inlet port 213 for collecting, flowing in and out of cooling water or coolant in the sandwich tube 211. Generally, the liquid outlet port 210 is higher than the liquid inlet port 213. Also, in order to prevent condensed water from being contained in the center pipe 212, the cooler 21 is usually provided with a certain inclination angle to allow condensed water to flow out of the cooler 21. For the specific internal structure in the cooler 11, as shown in Figs. 13 and 14, the sandwich tube 211 is composed of a plurality of sub-tubes 216, 217, 218, 219, etc., and the sub-tubes are evenly distributed on the circumference.

The connecting tube 22 is configured to connect the second cylinder 23 and the cooler 21, and includes a lead-out tube 221 of the cooler 21, a joint 222, and a lead-out tube 223 of the second cylinder 23. The inner diameter of the lead-out tube 221 is smaller than the cold or equalizer The inner diameter of the inner diameter of the outlet tube 223 is smaller than the inner diameter of the second cylinder 23, and the inner surface of the joint 222 is provided with a gasket, and the setting of the joint 222 can facilitate the installation of the hot air machine.

As in the first embodiment, it is preferable to use metal only in a place where the temperature is low, that is, a portion of the power output pipe 29 outside the first cylinder 25 and the communication pipe 24 can be made of a plastic material, and other components are at a high temperature position. Material.

Next, the relationship between the components of the liquid piston heat engine 1 of the embodiment of the present invention will be described:

First, in the liquid piston heat engine 2 of the present embodiment, the first cylinder 25 is L-shaped, including vertical and horizontal sections perpendicular to each other, the central axis of the heater 26, the central axis of the regenerator 27, and the first cylinder. The central axis of the 25 vertical segments is in a straight line which is parallel to the central axis of the second cylinder 23, and the cooler 21 is mounted at an oblique angle. As shown in Fig. 9, the liquid piston heat engine 2 of the present embodiment as a whole It has a trapezoidal structure and can be made into a sheet structure to save installation space.

Meanwhile, the liquid piston heat engine 2 of the present embodiment, the outer diameter of the heater 26, the outer diameter of the cooler 21, and the outer diameter of the first cylinder 25 may be equal to the outer diameter of the second cylinder 23. Further, the outer diameter of the heater 26, the outer diameter of the cooler 21, and the outer diameter of the first cylinder 25 may be equal, but both are smaller than the outer diameter of the second cylinder 23.

The liquid piston heat engine 2 of the embodiment of the present invention is still that the power output port is close to the first cylinder 25, and is far from the second cylinder 23, that is, the liquid surface of the liquid piston in the first cylinder 25 from the hot end is close to The liquid level of the liquid piston in the second cylinder 23 of the cold end is far as shown in FIG. 10, and therefore, the liquid piston hot air machine 2 of the second embodiment of the present invention The principle of operation is substantially the same as that of the liquid piston heat engine 1 of the first embodiment, and will not be described again.

The liquid piston heat engine 1, 2 of the embodiment of the present invention, taking the liquid piston heat engine 1 of the first embodiment as an example, the gas chamber and the first cylinder mainly provided by the heater 16, the regenerator 17, and the cooler 11. The volume ratio of the liquid chamber provided by the 15 and the second cylinder 13 may be 1:4-1:10, preferably 1:6-1:8. Before the heater 16 is heated, the liquid level can be adjusted to be higher than the top end of the first cylinder 15 and lower than or equal to the top end of the second cylinder 13. In the working state, the highest liquid level of the liquid piston in the first cylinder 15, that is, the upper limit of the liquid level is the top end of the first cylinder 15, and the power output port 152 is preferably disposed at the lowest liquid level in the first cylinder 15. , that is, the lower limit of the liquid level. Therefore, the length of the first cylinder 15 may be greater than or equal to the difference between the highest liquid level and the lowest liquid level of the first cylinder 15. Further, when the length of the first cylinder 15 is equal to the difference between the highest liquid level and the lowest liquid level, the power output pipe 19 is directly connected to the bottom of the first cylinder 15, and the upper end opening of the power output pipe 19 is the power output. mouth. The above description is also applicable to the liquid piston heat engine 2 of the second embodiment.

When the volume of the liquid chamber and the gas chamber described above are increased, the power of the entire hot air machine can be increased.

The liquid piston heat engine 1, 2 of the above two embodiments of the present invention, when powering the linear generator, replaces the valve body 10 and the valve body 20 with a hydraulic cylinder, and connects the linear generator through the piston of the hydraulic cylinder, where the hydraulic pressure is The piston in the cylinder needs to select a solid piston, and the liquid piston hot air machine 1 and 2 of the embodiment can provide reciprocating power for the linear generator to generate electric power by the linear generator. It is also possible to provide a diaphragm pump at one end of the power output pipes 19 and 29 where the power output port is not provided to be connected to the linear generator, and to provide reciprocating power to the linear generator to cause the linear generator to generate electricity.

Third, the boiler of the first embodiment of the present invention

The boiler of the present embodiment is a flue gas in-line boiler, which includes a furnace body 31, a flue 32 and a furnace 33. The furnace body 31 includes a heat absorption box 310 and a chimney 311, and the flue 32 is disposed in the heat absorption box 310. Between the furnace and the furnace 33. The function of the flue 32 is to provide a passage of the high temperature gas after combustion from the furnace 33 into the heat absorption box 310, and the water heated by the boiler is disposed in the interlayer of the heat absorption box 310, the flue 32 and the furnace 33.

The cross section of the flue 32 is, for example, rectangular, and the upper through hole 321 and the lower through hole 322 may be formed in the flue 32, and the heater 16 of the liquid piston hot air machine 1 of the first embodiment of the present invention is disposed in the flue 32. The lands 167 of the upper end of the heater 16 are sealingly connected to the upper through holes 321, and the lands 165 of the lower end of the heater 16 are sealingly connected to the lower holes 322.

The water circulation system of the boiler can be directly connected to the liquid inlet 102 and the liquid outlet 101 of the valve body 10, wherein the liquid inlet 102 is connected to the water return side of the heat sink, and the liquid outlet 101 is connected to the boiler; The cooler 11 is powered, at this time, the inlet port 102 is still connected to the return water side of the fin, and the liquid outlet 101 of the valve body 10 is connected to the inlet port of the cooler 11, and the cooler 11 is discharged. The liquid port is connected to the boiler to provide cooling water to the cooler 11 by using the return water of the boiler, which reduces the energy form and improves the energy conversion efficiency. Fourth, the boiler of the second embodiment of the present invention

The boiler of the present embodiment is a return type boiler, and includes a furnace body 51, a flue 52 and a furnace 53. The furnace body 51 includes a heat absorption box 510 and a chimney 511, and the flue 52 is disposed in the heat absorption box 510 and the furnace. Between 53. The function of the flue 52 is to provide a passage of the high temperature gas after combustion from the furnace 53 into the heat absorption box 510, and the water heated by the boiler is disposed in the interlayer of the heat absorption box 510, the flue 32 and the furnace 33.

The top surface of the flue 52 is provided with a top through hole 520, and the side of the flue 52 is provided with a side through hole 521, and the heater 16 and the first cylinder 15 of the liquid piston hot air machine 2 of the second embodiment of the present invention are disposed in the smoke. In the passage 52, the lands 270 of the upper end of the heater 26 are sealingly connected to the top surface through hole 520, and the lands or flanges of the lower end of the first cylinder 15 are sealingly connected to the side through holes 521.

In this embodiment, the connection manner between the valve body 20 and the water circulation system of the boiler is the same as that of the third embodiment, and will not be described again. 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 the invention is intended to be limited by the scope of the invention.

Claims

Rights request

A liquid piston heat engine comprising a first cylinder, a second cylinder, a heater, a regenerator and a cooler, wherein

The first cylinder and the second cylinder have a liquid piston communicating with the bottom;

The heater, the regenerator and the cooler are connected in sequence, the first cylinder is connected to the heater, and the second cylinder is connected to the cooler;

The liquid piston hot air machine further includes: a power output pipe, the first end of the power output pipe has a power output port extending into the first cylinder or connected to a bottom of the first cylinder to pass the power output pipe The second end outputs a reciprocating power outward.

2 . The liquid piston hot air machine according to claim 1 , wherein the second end of the power output pipe is connected to a chamber of a valve body, and the valve body has a liquid inlet and a liquid outlet. a first check valve is disposed between the chamber and the liquid inlet, a second check valve is disposed between the chamber and the liquid outlet, and the reciprocating power provided by the power output tube will be The liquid entering the liquid inlet is pumped out from the liquid outlet through the chamber, and the distance between the power output port and the liquid surface of the liquid piston in the first cylinder is smaller than the liquid in the second cylinder a distance of a liquid level of the piston, the power outlet being disposed at a lowest liquid level of the first cylinder.

The liquid piston hot air machine according to claim 1, wherein the liquid of the liquid piston is water, a heat transfer oil or a heat transfer liquid, or the liquid of the liquid piston is a certain height of a surface layer of water and water. Heat transfer oil or thermal fluid.

4. The liquid piston heat engine according to claim 1, wherein said heater, said regenerator and said central axis of said first cylinder are on a first straight line, said first straight The line encloses a triangle with the central axis of the second cylinder and the central axis of the cooler.

The liquid piston heat engine according to claim 1, wherein the first cylinder is L-shaped, and the central axis of the heater, the regenerator and the first cylinder is at a first In a straight line, the first line is parallel to the central axis of the second cylinder.

The liquid piston heat engine according to claim 1, wherein an outer diameter of the first cylinder is equal to or smaller than an outer diameter of the second cylinder.

The liquid piston heat engine according to claim 6, wherein the height of the first cylinder is equal to or greater than a difference between the highest liquid level and the lowest liquid level in the first cylinder.

The liquid piston heat engine according to claim 2, wherein the initial ratio of the liquid to the gas in the liquid piston heat engine is 6:1-8:1.

The liquid piston heat engine according to claim 1, wherein the power output tube has an L shape.

10 . The liquid piston hot air machine according to claim 2 , wherein a connection between the cooler and the second cylinder and between the second cylinder and the first cylinder is connected by a live connection, An inner diameter of the outlet pipe at both ends of the union is smaller than an inner diameter of the cooler casing, the first cylinder, and the second cylinder.

The liquid piston heat engine according to claim 1, wherein an upper limit of the liquid level in the first cylinder is a bottom end of the heater, and a liquid level lower limit is higher than the power output port.

The liquid piston heat engine according to claim 2, wherein the heater, the regenerator, the cooler, the first cylinder and the second cylinder are both made of a metal material, and the first cylinder and the chamber are connected The connecting pipe of the second cylinder is made of plastic material, and the power output pipe is made of plastic material.

The liquid piston heat engine according to claim 1, wherein the second end of the power output pipe is connected to the linear generator through a diaphragm pump or a piston of a hydraulic cylinder.

14. The liquid piston heat engine of claim 1 wherein the first end of the cooler is higher or lower than the second end of the cooler.

15. A boiler, characterized in that the boiler has the liquid piston heat engine of any of claims 1-14.

The boiler according to claim 15, wherein the boiler is a flue gas in-line boiler, and an upper through hole and a lower through hole are opened in a flue of the boiler, and the liquid piston hot air machine is The heater is disposed in the flue, the upper end of the heater is sealingly connected to the upper through hole, and the lower end of the heater is sealingly connected to the lower through hole.

The boiler according to claim 16, wherein the boiler is a return-type boiler, a top surface of the flue is provided with a top surface through hole, and a side of the flue is provided with a side through hole. The heater of the liquid piston hot air machine and the first cylinder are disposed in the flue, an upper end of the heater is sealingly connected to the top surface through hole, and a lower end of the first cylinder is sealingly connected to The side through hole.