WO2019205773A1

WO2019205773A1 - New steam machine with cyclically operated working medium therein

Info

Publication number: WO2019205773A1
Application number: PCT/CN2019/074544
Authority: WO
Inventors: 曹连国
Original assignee: Cao Lianguo
Priority date: 2018-04-28
Filing date: 2019-02-02
Publication date: 2019-10-31
Also published as: WO2019205486A1; CN112041542A; CN112041542B; CN108533328A

Abstract

A steam machine with a cyclically operated working medium therein, comprising a liquefaction recovery device (1), an injection device (2), a steam generation device (3) and a pneumatic actuation device (5). The liquefaction recovery device (1), the injection device (2), the steam generation device (3) and the pneumatic actuation device (5) are connected by means of pipes (6) and form a circulation passage, and the working medium flows in the circulation passage; the working medium passing through the steam generation device (3) is heated and then at least partially becomes gaseous, and the steam generation device (3) absorbs external heat so as to further heat the working medium flowing through the steam generation device (3); the working medium outputted by the steam generation device (3) pushes the pneumatic actuation device (5) to generate a mechanical movement. The working medium used by this steam machine has a higher saturated vapor pressure than water at the same temperature, even when the temperature of the heat source is low, the steam machine can still generate steam with sufficient pressure, pushing the pneumatic actuation device to generate the mechanical movement.

Description

A new type of steam engine with working fluid circulation

Technical field

The invention relates to the technical field of steam engines, in particular to a novel steam engine with working fluid circulation and a novel steam engine for converting thermal energy of high-temperature exhaust gas and high-temperature coolant discharged from an internal combustion engine into mechanical energy.

Background technique

The principle of the existing air conditioning system refrigeration operation is that after the air conditioner is started, the low pressure steam of the refrigerant in the air conditioning system is sucked by the compressor and compressed into high pressure steam, and then discharged to the condenser, and the air flows through the condenser to take away the refrigerant. The heat energy causes the high-pressure refrigerant vapor to condense into a high-pressure liquid. The high-pressure liquid is sprayed into the air-conditioner evaporator through the filter and the throttling mechanism, and is evaporated at a corresponding low pressure, and the liquid refrigerant evaporates at a low pressure to form a low-temperature low-pressure gas. The heat transfer absorbs the surrounding heat energy to achieve the purpose of cooling.

The advantages of the air conditioning system are summarized as follows:

1. The efficiency of absorbing thermal energy is very high;

2. It can absorb heat energy in a lower temperature environment.

At the same time, the air conditioning system has its own shortcomings: it can only transfer thermal energy, and can not convert the absorbed thermal energy into mechanical energy for use.

The steam engine is a device that converts thermal energy into mechanical energy. The working principle of the prior art steam engine is that the heat source heats the water in the boiler, and the water reaches a boiling point to generate high-temperature and high-pressure water vapor, and the pressure of the steam is used to push the pneumatic actuator to work. Produce mechanical motion to achieve the purpose of converting thermal energy into mechanical energy. At present, pneumatic actuators, such as air motors, usually need to be operated at a steam pressure of not less than 0.4 MPa to run smoothly. Looking for a saturated steam pressure gauge at various temperatures, it is known that the evaporation pressure needs to reach about 0.4 Mpa. The temperature reaches 143 °C, because the transfer of heat energy can only be transmitted from high temperature substances to low temperature substances. The heat transfer also needs a certain temperature difference. That is, the heat source temperature needs to be higher than the water temperature. The heat transfer can be carried out. The faster the speed, the smaller the temperature difference is, the slower the heat transfer is. Therefore, the current steam engine with water as the working medium cannot work under the lower temperature heat source condition of about 200 °C.

Summarizing the advantages of a steam engine in the art is the ability to convert thermal energy into mechanical energy.

At the same time, the prior art steam engine has its inherent disadvantages:

1. The saturated vapor pressure of water at a lower temperature is too low, and a higher vapor pressure is generated. The boiling temperature of water is correspondingly increased. Since the heat transfer requires a temperature difference, the temperature of the heat source required by the prior art steam engine is often Reach hundreds of degrees Celsius, even on Celsius.

2. The latent heat of evaporation of water is relatively large. During the process of evaporation of water from liquid to high temperature steam, relatively more heat energy needs to be absorbed. These heat energy cannot be converted into mechanical energy, but is discharged with steam steam system. Technical steam engines are very inefficient in converting thermal energy into mechanical energy.

Due to the shortcomings of the prior art steam engine design described above, prior art steam engines are unable to accomplish the task of converting a lower temperature heat source into mechanical energy when faced with some lower temperature heat sources. For example, the waste heat generated during the production process of the factory usually ranges from 70 °C to 150 °C, including high temperature exhaust gas waste heat, cooling medium waste heat, waste steam waste heat, high temperature products and slag waste heat, chemical reaction waste heat, combustible waste gas waste and waste heat Wait. According to the survey, the total waste heat resources of various industries account for about 17% to 67% of the total fuel consumption. For another example, the temperature of most of the internal combustion engine coolant is between 80 °C and 100 °C when the internal combustion engine flows out. Heat is required, and the heat is taken away by the air, which is not used, resulting in a low utilization rate of the combustion value of the internal combustion engine. The prior art steam engine cannot adapt to the above-mentioned lower temperature heat source, and the heat source cannot be used. Thermal energy is converted into mechanical energy for use.

Summary of the invention

In order to solve the problems of the prior art, the present invention provides a novel steam engine with working fluid circulation, and the technical scheme is as follows:

The invention provides a novel steam engine with working fluid circulation, which comprises: a recycling liquefaction device, an injection device, a steam generating device and a pneumatic executing device, a recycling liquefaction device, an injection device, a steam generating device and a pneumatic executing device through a pipeline Connecting and forming a circulation path, and the working medium flows in the circulation path;

The injection device is used for sucking the working medium and discharging the working medium, and the steam generating device heats the liquid phase working in the steam generating device by absorbing the external heat, and the liquid phase working in the steam generating device After being heated, at least partially vaporized into steam; the air pressure at the input port of the pneumatic actuator is greater than the air pressure at the output port, and the steam is input into the pneumatic actuator to expand and work, and the pneumatic actuator generates mechanical motion under the action of expansion work, and the steam completes the expansion work. It is discharged from the pneumatic actuator, and the recovery liquefaction device liquefies the steam flowing therein.

Further, at the same temperature, the saturated vapor pressure of the working fluid is higher than the saturated vapor pressure of the water.

Further, the steam engine further includes a logic control unit that controls the recovery liquefaction device, the injection device, the steam generation device, and the pneumatic actuator. .

Alternatively, the recovery liquefaction device, the injection device, the steam generating device, and the pneumatic actuator are sequentially connected by a pipe and form a circulation passage.

Optionally, the injection device, the recovery liquefaction device, the steam generating device, and the pneumatic actuator are sequentially connected by a conduit and form a circulation passage.

Further, the working fluid is a substance having a saturated vapor pressure of not less than 0.4 MPa at 100 °C.

Further, the working substance is a substance having a saturated vapor pressure of not less than 0.4 MPa at 50 °C.

Further, the working fluid is a substance having a difference between a saturated vapor pressure at 50 ° C and a saturated vapor pressure at 25 ° C of not less than 0.4 MPa.

Further, the working fluid includes, but is not limited to, carbon dioxide, ammonia, air conditioning refrigerant R134a, air conditioning refrigerant R410a, air conditioning refrigerant R32, and the like.

Optionally, the pneumatic actuator is a pneumatic motor or a cylinder piston mechanism or a steam turbine mechanism, the recovery liquefaction device is an air conditioning condenser of the air conditioning system, and the injection device is a liquid booster pump.

Further, the air pressure of the output of the pneumatic actuator is controlled by controlling the amount of the working medium sucked by the injection device per unit time, thereby controlling the temperature of the steam discharged by the pneumatic actuator.

Optionally, the recovery liquefaction unit, the injection unit, and the steam generation unit are integrated into an air conditioner condenser, an air conditioner compressor, and an air conditioner evaporator combination of the air conditioning system.

Further, the external heat is a heat source disposed at the steam generating device, and the heat source is used to supply heat to the steam generating device, and the heat supply temperature of the heat source is lower than 200 °C.

Further, the heat source has a heating temperature ranging from 70 ° C to 150 ° C.

Further, the heat source is natural heat energy, including but not limited to heat energy of the air, radiant heat energy of the sun, and the like.

Further, a check valve is provided on the input line of the steam generating device.

Further, the output line of the steam generating device comprises a first branch of the pipeline and a second branch of the pipeline, the first branch of the pipeline is used to connect the pneumatic actuator, the second branch of the pipeline is provided with a valve, and the valve is opened under the control of the logic control unit. Or close.

Further, the injection device absorbs the liquid phase working medium located in the recovery liquefaction device and pressurizes the liquid phase working medium, and the liquid phase working medium is injected into the steam generating device along the pipeline under the action of pressure, and the liquid phase working medium is in the steam generating device. After vaporization into steam, the pneumatic actuator is input, and the steam flows into the recovery liquefaction device after being expanded in the pneumatic actuator.

Further, the process in which the liquid phase working medium is injected into the steam generating device along the pipeline under pressure and the steam generating device vaporizes the working fluid of the liquid phase in the steam generating device into steam and the process of generating mechanical motion with the pneumatic actuator get on.

Further, the steam engine further includes a steam temperature re-up device, the steam temperature re-up device is disposed at a position heated by a heat source, the input port of the steam temperature re-lifting device is connected to the output port of the steam generating device, and the steam temperature is further increased by the output of the device. The port is connected to the input port of the pneumatic actuator, and the steam entering the steam temperature is raised by the heat of the heat source under the heat of the heat source.

Further, the liquid phase medium discharged from the injection device and the steam discharged from the pneumatic actuator perform mutually beneficial heat transfer, and the mutually beneficial heat transfer is that the steam releases heat to the liquid phase.

Further, the steam engine further includes an auxiliary cooling device disposed at a position where the steam discharged from the pneumatic actuator is cooled, including but not limited to a fan, an air conditioner, and the like.

Further, the steam engine further includes a temperature lowering device disposed at a position for cooling the recovery liquefaction device, and controlling the temperature of the steam discharged from the pneumatic actuator by controlling the cooling power output to the recovery liquefaction device by the cooling device.

Further, the cooling device is an air conditioning device.

Further, the temperature of the steam discharged by the pneumatic actuator is lower than the temperature of the air in the environment in which the conduit between the injection device and the steam generating device is located.

Further, the liquid phase fluid discharged from the injection device absorbs heat during the flow to the steam generating device.

Further, the heat absorbed by the liquid phase medium discharged from the injection device during the flow to the steam generating device is derived from nature.

Further, the source of heat absorbed by the liquid phase effluent discharged from the injection device during the flow to the steam generating device is the air in the environment in which the conduit between the injection device and the steam generating device is located.

Further, the heat source that supplies heat to the steam generating device is a high temperature exhaust gas discharged from the internal combustion engine and/or a high temperature coolant flowing out of the internal combustion engine.

Further, when the heating temperature of the external heat is higher than 200 ° C, the evaporation temperature of the working medium in the steam generating device is in the range of 30 ° C to 100 ° C.

Further, when the heating temperature of the external heat is equal to or lower than 200 ° C, the evaporation temperature of the working medium in the steam generating device is in the range of 0 ° C to 100 ° C.

The beneficial effects brought by the technical solutions provided by the present invention are as follows:

1. The steam engine provided by the invention can not only convert the thermal energy of the high temperature heat source (above hundreds of degrees Celsius) into mechanical energy, but also convert the thermal energy of the low temperature heat source (such as 70 ° C - 150 ° C or even lower temperature) into mechanical energy, filling the present The steam engine of the prior art cannot convert the thermal energy of the low temperature heat source into a defect of mechanical energy.

2. Compared with the steam engine of the prior art, the steam engine provided by the invention has a lower boiling point under the same conditions than the working medium used in the steam engine of the prior art, and the heating temperature of the heat source is the same. In the case of the steam engine of the present invention, the temperature difference between the vaporization temperature and the heat source temperature of the working fluid is larger. When the heat energy of the low temperature heat source is absorbed or the heat energy of the high temperature heat source is absorbed, the heat transfer speed is faster, and thus the existing heat is faster than the existing one. The steam engine in the technology is capable of converting more thermal energy into mechanical energy per unit time.

3. The steam engine provided by the invention has greatly improved the efficiency of mechanical energy conversion through the optimized design of the structure, and in particular, can convert the thermal energy in the natural world into useful mechanical energy, which is of great significance for energy saving and emission reduction.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only a part of the embodiments of the present invention. Other embodiments may be derived from those of ordinary skill in the art in view of these drawings.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing the principle structure of a novel steam engine with working fluid circulation according to an embodiment of the present invention;

2 is a schematic view showing a first preferred embodiment of a steam engine of a working fluid cycle according to an embodiment of the present invention;

3 is a schematic view showing a second preferred embodiment of a novel steam engine in which a working fluid is cycled according to an embodiment of the present invention;

4 is a schematic view showing a third preferred embodiment of a novel steam engine with working fluid circulation according to an embodiment of the present invention;

5 is a schematic view showing a fourth preferred embodiment of a steam engine of a working fluid cycle according to an embodiment of the present invention;

6 is a schematic view showing a fifth preferred embodiment of a novel steam engine with working fluid circulation according to an embodiment of the present invention; wherein the reference numerals include: 1-recovery liquefaction device, 11-air conditioner compressor, 2-injection device , 21-air conditioning condenser, 211-liquid booster pump, 22-fan, 23-check valve, 3- steam generator, 31-air conditioner evaporator, 4-heat source, 41-heat source, 42-heat source, 5- Pneumatic actuator, 51-air motor, 6-pipe, 61-pipe first branch, 62-pipe second branch, 63-valve, 64-low pressure pipe, 8-logic control unit, 81-control harness, 341-steam Temperature re-lifting device, 151-assisted cooling device, 161-cooling device, 162-fan.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is an embodiment of the invention, but not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of the present invention.

It should be noted that the terms "comprising" and "having", and any variations thereof, are intended to cover a non-exclusive inclusion, such as a process or method comprising a series of steps or units. The apparatus, products, or devices are not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not explicitly listed or inherent to such processes, methods, products, or devices.

It should also be noted that the term "saturated vapor pressure" in the specification and claims of the present invention is specifically defined as the pressure of steam which is in equilibrium with a solid or liquid at a certain temperature in a closed condition. It is called saturated vapor pressure. It is well known that the saturated vapor pressure increases with increasing temperature; for example, the water placed in a cup becomes less and less as it evaporates continuously; if pure water is placed in a closed container and the air above is removed When the water evaporates continuously, the pressure of the vapor phase above the water surface, that is, the pressure of the steam of the water increases continuously, but when the temperature is constant, the vapor phase pressure will eventually stabilize at a fixed value, and the vapor phase at this time The pressure is called the saturated vapor pressure of water at this temperature, and the vapor phase pressure at this time is called the saturated vapor pressure of water at this temperature. When the value of the vapor phase pressure reaches the value of the saturated vapor pressure, the liquid phase water The molecules are still continuously vaporized, and the water molecules in the gas phase are continuously condensed into a liquid. However, since the gasification rate of water is equal to the condensation speed of water vapor, the amount of liquid is not reduced, the amount of gas is not increased, and the liquid and gas are in equilibrium. Therefore, when the liquid pure substance vapor has a pressure of its saturated vapor pressure, the vapor-liquid two phases reach a phase equilibrium. Saturated vapor pressure is an important property of a substance. Its size depends on the nature and temperature of the substance. The higher the saturated vapor pressure, the more volatile the substance is. The specific definition of the term "working medium" in the specification and claims of the present invention is that a medium substance that converts thermal energy and mechanical energy through a series of state changes (interphase conversion of solid phase, liquid phase and gas phase) is called Working quality. The working fluid includes, but is not limited to, a single species, and also a mixture of two and more than two species.

Example 1

In an embodiment of the present invention, a new steam engine for working fluid circulation is provided. Referring to Figure 1, the direction of the arrow indicates the flow direction of the working medium, and the new steam engine includes a recovery liquefaction device 1, an injection device 2, and steam generation. The device 3 and the pneumatic actuator 5, the recovery liquefaction device 1, the injection device 2, the steam generating device 3 and the pneumatic actuator 5 are connected by a pipe 6 and form a circulation passage, and the working medium flows in the circulation passage;

The injection device 2 injects the working medium of the liquid phase into the steam generating device 3, and the steam generating device 3 heats the working medium located in the steam generating device 3 by absorbing the external heat, and the liquid phase located in the steam generating device 3 After being heated, the working medium is at least partially vaporized into steam, and the steam is output to the pneumatic actuator 5, and the pneumatic actuator 5 generates mechanical motion under the action of steam.

Wherein: the function of the recovery liquefaction device 1 is to recover the working fluid vapor discharged from the pneumatic actuator 5 and reliquefy the steam;

The function of the injection device 2 is to inject a liquefied cryogenic liquid phase into the steam generating device 3;

The function of the steam generating device 3 is to absorb the heat of the heat source 4 to vaporize the injected liquid phase working medium into high-temperature and high-pressure steam, and to function as a boiler that generates steam in the steam engine of the prior art;

The function of the pneumatic actuator 5 is to generate mechanical motion under the pressure of the high temperature and high pressure steam from the steam generating device 3, and convert the pressure energy of the high temperature and high pressure steam into mechanical energy;

The above-mentioned devices are connected by a pipe 6, and the function of the pipe 6 is to connect the various system components into one body and form a circulating flow passage of the working medium;

The function of the working medium is to absorb the heat of the heat source 4 to form high temperature and high pressure steam, and push the pneumatic actuator 5 to generate mechanical motion;

The steam generating device 3 is disposed at the heat source 4 to facilitate absorption of the heat energy of the heat source 4. The specific working process is as follows: the injection device 2 injects the liquid phase into the steam generating device 3, and under the heating of the heat source 4, the liquid phase The steam is vigorously vaporized in the steam generating device 3 to form high temperature and high pressure steam, and the high temperature and high pressure steam is output to the input port of the pneumatic actuator 5, the air pressure at the output port of the pneumatic actuator 5 is low, and the pneumatic actuator 5 is at high temperature and high pressure. Mechanical action is generated by the action of steam, after which the pneumatic actuator 5 discharges the low-pressure steam, and the low-pressure steam is recovered by the recovery liquefaction device 1 and reliquefied to a liquid phase state, and then the working medium of the liquid phase in the liquefaction device 1 is recovered by the injection device. 2 sucking and re-injecting into the steam generating device 3, repeating the vaporization of the working fluid, pushing the pneumatic actuator 5 to generate mechanical motion, and then being liquefied by the recycled liquefaction device 1 and being injected into the steam generating device 3 by the injection device 2, Cycling, the purpose of converting the thermal energy of the heat source 4 into useful mechanical energy.

At present, pneumatic actuators, such as air motors, generally require an input steam pressure of not less than 0.4 MPa to operate effectively and smoothly. Looking for a saturated vapor pressure gauge at various temperatures, a saturated vapor pressure of water of about 0.4 Mpa is known. The corresponding boiling point temperature of water is about 143 ° C; so when the temperature of the heat source is lower than 143 ° C, the highest water vapor pressure generated will be less than 0.4 MPa.

The invention provides a novel steam engine with working fluid circulation, wherein the preferred working fluid is a substance whose saturated vapor pressure is higher than the saturated vapor pressure of water at the same temperature, and further, to improve the working fluid at the same temperature. Saturated vapor pressure to increase the driving capacity of the pneumatic actuator and increase the vaporization rate of the working fluid. As a preferred solution, to adapt to the heat source of about 150 ° C, the preferred working fluid is not lower than the saturated vapor pressure at 100 ° C. At 0.4 MPa, in order to accommodate a heat source of about 70 ° C or lower, the preferred working fluid is a material having a saturated vapor pressure of not less than 0.4 MPa at a temperature of 50 ° C.

At the same time, in order to reduce the energy consumed when the working fluid is reliquefied, it is necessary to condense and liquefy the working medium with natural wind at a normal temperature of 25 ° C. As a preferred solution, the present invention provides a working cycle of working fluid. The preferred working fluid of the new steam engine is a substance having a difference between a saturated vapor pressure at 50 ° C and a saturated vapor pressure at 25 ° C of not less than 0.4 MPa, including but not limited to carbon dioxide, ammonia, air conditioning refrigerant R134a, Air conditioning refrigerant R410a, air conditioning refrigerant R32, etc.

The novel steam engine provided by the working cycle of the working cycle is compared with the steam engine of the prior art, and the new steam engine can be operated under the condition that the heat supply temperature of the heat source is low, for example, the heating temperature of the heat source 4 can be Below 200 ° C, from the viewpoint of energy optimization, the heating temperature of the heat source 4 preferably ranges from 70 ° C to 150 ° C. Alternatively, the heat supply temperature of the heat source 4 preferably ranges from less than 70 ° C. The heat source 4 includes, but is not limited to, thermal energy in nature, including but not limited to heat energy of the air, radiant heat energy of the sun, and the heat source 4 also includes, but is not limited to, artificially manufactured heat energy, such as a coolant of an internal combustion engine at work (temperature is generally The high-temperature exhaust gas (temperature is generally higher than 600 ° C) discharged from the internal combustion engine at 80 ° C - 100 ° C). It should be noted that the heating temperature of the preferred heat source 4 of the novel steam engine provided by the present invention can achieve a low temperature range, which is an advantage of the embodiment of the present invention. It is obvious that when the heat source 4 outputs high temperature heat (the temperature is higher than At 200 ° C), the technical solution of the present invention can be achieved even better (there can be more thermal energy converted into mechanical energy), and therefore, the upper limit of the heating temperature of the heat source 4 is not limited as the scope of protection of the present invention. Obviously, the greater the temperature difference between the heating temperature of the heat source 4 and the evaporation temperature of the working medium in the steam generating device 3, the faster the heat source 4 transfers heat to the working medium, so theoretically, the working medium is in the steam generating device 3. The lower the evaporation temperature, the more favorable it is, but from the evaporation pressure required to drive the pneumatic actuator 5, the higher the evaporation temperature is, the more the evaporation pressure is obtained for the same working fluid, and the ease of production of the new steam engine is considered. Preferably, when the heating temperature of the heat source 4 is higher than 200 ° C, the evaporation temperature of the working medium in the steam generating device 3 is in the range of 30 ° C to 100 ° C; when the heating temperature of the heat source 4 is equal to or lower than 200 ° C The evaporation temperature of the working fluid in the steam generating device 3 is in the range of 0 ° C to 100 ° C.

Example 2

In a preferred embodiment of the present invention, as shown in FIG. 2, wherein the direction of the arrow indicates the flow direction of the working medium, a new steam engine in which the working fluid recycles work includes an air conditioner compressor 11, an air conditioner condenser 21, a fan 22, The check valve 23, the air conditioner evaporator 31, the air motor 51, the first branch 61 of the pipeline, the second branch 62 of the pipeline, the valve 63, the low pressure conduit 64, the logic control unit 8 and the control harness 81, and the working medium preferably the air conditioner refrigerant R410a, The direction of the arrow in the figure indicates the flow direction of the working medium, the air conditioner compressor 11 (corresponding to the injection device 2 in the first embodiment), the air conditioner condenser 21 (corresponding to the recovery liquefaction device 1 in the first embodiment), and the air conditioner evaporator 31. (corresponding to the steam generating device 3 in the first embodiment) and the air motor 51 (corresponding to the pneumatic actuator 5 in the first embodiment) are sequentially connected by the pipe 6 and form a circulation path; the air-conditioning refrigerant R410a (in the first embodiment) The preferred solution for the working fluid) circulates in the circulation path. among them:

The function of the air-conditioning compressor 11 is to take in the air-conditioning refrigerant R410a discharged from the air motor 51 and compress and pressurize the air-conditioning refrigerant R410a in an appropriate amount; at the same time, by controlling the number of air-conditioning refrigerant R410a in the air-conditioning compressor 11 per unit time, Controlling the pressure of the air conditioner refrigerant R410a from the exhaust port of the air motor 51 to the input port of the air conditioner compressor 11 (i.e., the steam pressure of the air conditioner refrigerant R410a in the low pressure pipe 64); apparently, the air conditioner compressor 11 The more the amount of the air-conditioning refrigerant R410a is taken up per unit time, the lower the steam pressure in the low-pressure pipe 64; the less the air-conditioning compressor 11 draws the air-conditioning refrigerant R410a per unit time, the steam in the low-pressure pipe 64 The higher the pressure; the pressure of the steam in the low pressure conduit 64 is approximately equal to the air pressure at the output of the pneumatic actuator 5; and the air pressure at the output of the pneumatic actuator 5 determines the temperature of the steam discharged from the pneumatic actuator 5. Therefore, by controlling the number of air conditioner refrigerants R410a per unit time by the air conditioner compressor 11, the pneumatic actuator 5 can be controlled to be discharged. The temperature of the steam;

The air-conditioning condenser 21 functions to cool the air-conditioning refrigerant R410a that has been appropriately pressurized by the air-conditioning compressor 11, and finally re-liquefy the air-conditioning refrigerant R410a;

The function of the fan 22 is to blow air to the air conditioner condenser 21, take away heat, and rapidly cool and liquefy the air conditioner refrigerant R410a;

The function of the check valve 23 is to ensure that the liquid-phase refrigerant R410a can only flow from the air-conditioning condenser 21 to the air-conditioner evaporator 31, and cannot flow in the opposite direction;

The function of the air conditioner evaporator 31 is to heat and vaporize the injected liquid phase air-conditioning refrigerant R410a into high-temperature and high-pressure steam by absorbing the heat of the heat source 4, and function as a boiler which generates steam in the steam engine of the prior art;

The function of the air motor 51 is to convert the pressure energy of the steam of the high temperature and high pressure air conditioner refrigerant R410a from the air conditioner evaporator 31 into mechanical energy;

The first branch 61 of the pipeline functions to connect the pneumatic actuator 5 and is provided to the air conditioning refrigerant R410a as a flow passage;

The second branch 62 of the pipeline functions to provide a potential flow passage to the air-conditioning refrigerant R410a, and the second branch 62 of the pipeline is provided with a valve 63, and the valve 63 is opened or closed under the control of the logic control unit 8;

The function of the valve 63 is to realize the conduction and the cut-off of the second branch 62 of the pipeline under the control of the logic control unit 8;

The function of the air conditioner refrigerant R410a is to absorb the heat of the heat source 4 to form high temperature and high pressure steam, and push the air motor 51 to generate mechanical motion;

The logic control unit 8 has a preset control program therein, and is connected to the air conditioner compressor 11, the air conditioner condenser 21, the check valve 23, the air conditioner evaporator 31, and the air motor 51 through the control harness 81, respectively, for detecting the phase The operating state of each connected system component is logically judged according to a preset control program therein, and the output signal is controlled to each system component connected thereto;

The function of the control harness 81 is to connect the logic control unit 8 and other system components by electrical signals;

Specifically, during operation, the air conditioner compressor 11 draws the air conditioner refrigerant R410a discharged from the air motor 51 and pressurizes it to an air conditioner condenser 21, and the logic control unit 8 monitors the entire new type. The operation of the steam engine is judged according to a preset procedure thereof, and the output signal controls the speed of the air conditioner compressor 11 to take up the air conditioner refrigerant R410a per unit time, so that the pressure of the steam in the low pressure pipe 64 reaches the set value; the fan 22 The air conditioner condenser 21 blows air to remove heat, so that the air conditioner refrigerant R410a in the air conditioner condenser 21 is rapidly cooled and finally condensed and liquefied. At this time, the pressure of the liquid phase refrigerant R410a in the liquid phase condenser 21 is stronger than that of the air conditioner. The pressure of the steam in the device 31, the liquid-phase refrigerant R410a flows under the pressure, flows through the check valve 23 to the air conditioner evaporator 31, and a certain amount of liquid-phase air-conditioning refrigerant R410a is injected into the air conditioner evaporator. After 31, the air-conditioning refrigerant R410a accompanying the liquid phase is heated by the heat source 4 in the air conditioner evaporator 31, and the steam is vaporized in the air conditioner evaporator 31. When the pressure is gradually increased until it is greater than the pressure of the air-conditioning refrigerant R410a of the liquid phase in the air-conditioning condenser 21, the check valve 23 is closed by the high-temperature and high-pressure steam, and the high-temperature high-pressure steam in the air-conditioner evaporator 31 is prevented from being condensed to the air conditioner. The valve 21 is recirculated. At this time, the logic control unit 8 controls the valve 63 to be in an off state according to a preset control program therein, the second branch 62 of the pipe is cut off, and the high temperature and high pressure steam in the air conditioner evaporator 31 can only pass through the pipe first. The branch 61 flows to the air motor 51, and the pressure of the air conditioner refrigerant R410a in the air conditioner evaporator 31 continues to increase until the air motor 51 can be rotated to perform work; after the high temperature and high pressure air conditioner refrigerant R410a pushes the air motor 51 to generate mechanical motion, The flow through the low-pressure pipe 64 is taken up by the combination of the air-conditioning compressor 11 and the air-conditioning condenser 21, and is compressed and pressurized, and then re-liquefied to become a low-temperature medium-pressure liquid phase working medium; when the air-conditioning evaporator 31 is injected into the liquid phase After the air-conditioning refrigerant R410a is gradually depleted, the logic control unit 8 is controlled by the control harness 81 according to a control program preset therein. The door 63 is opened to be in an on state, and the second branch 62 of the duct is electrically connected to the low pressure duct 64, and the vapor pressure inside the air conditioner evaporator 31 is rapidly lowered until it is lower than the liquid phase low temperature medium voltage air conditioner refrigeration in the air conditioner condenser 21. When the pressure of the agent R410a is reached, the liquid-phase air-conditioning refrigerant R410a flows again to the air-conditioner evaporator 31 via the check valve 23 under pressure, so that the interior of the air-conditioner evaporator 31 is in a low-pressure state, and the liquid-phase air-conditioning refrigerant R410a is in the air conditioner evaporator. The internal internal combustion of the air conditioner evaporator 31 is rapidly cooled to form a temporary low-pressure low-temperature atmosphere. After being detected by the logic control unit 8, the logic control unit 8 outputs a shutdown signal to the valve 63 through the control harness 81 to make the pipeline. The conduction between the second branch 62 and the low-pressure duct 64 becomes off. At this time, the inside of the air-conditioner evaporator 31 is still in a low-pressure and low-temperature state, and the liquid-phase air-conditioning refrigerant R410a can continue to be injected into the air-conditioner evaporator 31, since heat transfer is required. At the time, when the temperature inside the air conditioner evaporator 31 has not risen too much, the liquid phase low temperature medium pressure air conditioner refrigerant R410a in the appropriate amount of the air conditioner condenser 21 has been injected into In the evaporator 31, after the liquid-phase air-conditioning refrigerant R410a in the air-conditioner evaporator 31 is heated and vaporized, the pressure is gradually increased until it is higher than the pressure of the liquid-phase air-conditioning refrigerant R410a in the air-conditioning condenser 21, When the valve 23 is forced to close, the task of injecting the liquid-phase air-conditioning refrigerant R410a into the air-conditioner evaporator 31 is completed, and thereafter, the air-conditioning refrigerant R410a starts to repeat the expansion work in the air-conditioner evaporator 31, and pushes the air motor 51 to generate The mechanical movement, as well as the process of re-recycling and liquefaction, works cyclically. Among them, as a publicly known technique and from the optimization of the invention, a preferred structure is that the air conditioner condenser 21 and the air conditioner evaporator 31 are both composed of a curved duct 6 and fins, and the curved duct 6 passes through the fins, and the air conditioner refrigerant R410a flows in the curved duct 6 and exchanges heat, and the fins are in contact with the outer wall of the curved duct 6 for increasing the area of heat exchange to accelerate heat exchange.

Obviously, in the second embodiment, the air conditioner compressor 11, the air conditioner condenser 21, the check valve 23, the first branch line 61, the second branch 62 of the duct, the valve 63 and the low pressure duct 64 are cooperatively completed in the first embodiment. The functions of the recovery liquefaction device 1 and the injection device 2 are a preferred embodiment of the recovery liquefaction device 1 and the injection device 2 in the first embodiment; the air conditioner evaporator 31 functions as the steam generating device 3 in the first embodiment, which is an embodiment. A preferred embodiment of the steam generating device 3; the air motor 51 functions as the pneumatic actuator 5 of the embodiment 1, and is a preferred embodiment of the pneumatic actuator 5 of the embodiment 1. It is obvious that if the air motor 51 is used Alternatively, it is a cylinder piston mechanism or a steam turbine mechanism, etc., and can also function as the pneumatic actuator 5 of the first embodiment. The cylinder piston mechanism and the steam turbine mechanism are also preferred embodiments of the pneumatic actuator 5 of the first embodiment.

Example 3

In another embodiment of the present invention, as shown in FIG. 3, a new type of steam engine with working fluid circulation includes an air conditioner condenser 21, a fan 22, a check valve 23, a liquid booster pump 211, and an air conditioner evaporator 31. The air motor 51 and the working medium are preferably an air-conditioning refrigerant R410a, a logic control unit 8, and a control harness 81. The direction of the arrow indicates the flow direction of the working medium, and the air conditioner condenser 21 (corresponding to the recovery liquefaction apparatus 1 in the first embodiment) ), a liquid booster pump 211 (corresponding to the injection device 2 in the first embodiment), an air conditioner evaporator 31 (corresponding to the steam generating device 3 in the embodiment 1), and a pneumatic motor 51 (corresponding to the pneumatics in the embodiment 1) The actuators 5) are sequentially connected by a pipe 6 and form a circulation path. among them:

The air conditioner condenser 21 functions to accommodate the air conditioner refrigerant R410a vapor discharged from the air motor 51, and to dissipate heat of the R410a steam to be finally condensed into a liquid phase; and at the same time, to control the air conditioner condenser 21 to be in a gaseous state per unit time. The quantity of liquefaction of the air-conditioning refrigerant R410a reaches the purpose of controlling the steam pressure in the low-pressure pipe 64, so that the pressure difference between the inlet port air pressure of the air motor 51 and the air pressure of the output port is apparent; apparently, the air-conditioning air-conditioning refrigeration of the air-conditioning condenser 21 per unit time The more the agent R410a, the lower the vapor pressure in the low pressure pipe 64;

The function of the liquid booster pump 211 is to pressurize the liquid-phase low-temperature low-pressure air-conditioning refrigerant R410a from the air-conditioning condenser 21;

The function of the fan 22 is to blow the air conditioner condenser 21 to remove heat, so that the air-conditioning refrigerant R410a is rapidly cooled and condensed into a liquid phase;

The function of the check valve 23 is to ensure that the liquid-phase refrigerant R410a of the liquid phase can only flow from the liquid booster pump 211 to the air conditioner evaporator 31, and cannot flow in the opposite direction;

The function of the air conditioner evaporator 31 is to heat and vaporize the injected low-temperature and high-pressure liquid-phase air-conditioning refrigerant R410a into high-temperature and high-pressure steam by absorbing the heat of the heat source 4, and function as a boiler which generates steam in the conventional steam engine;

The function of the air conditioner refrigerant R410a is to absorb the heat of the heat source 4 to form high temperature and high pressure steam, and then push the air motor 51 to rotate;

The logic control unit 8 stores a preset control program, and is connected to the air conditioner condenser 21, the check valve 23, the liquid booster pump 211, the air conditioner evaporator 31, and the air motor 51 through the control harness 81 for detecting The operating state of each system component connected thereto is logically judged according to a preset control program therein, and the output signal is controlled to each system component connected thereto;

Specifically, during operation, the liquid booster pump 211 sucks in and pressurizes the low-temperature low-pressure liquid-phase air-conditioning refrigerant R410a liquefied by the air-conditioning condenser 21, and injects the air-conditioning refrigerant R410a through the check valve 23 to the air conditioner to evaporate. In the air conditioner refrigerant R410a, the heat absorbed by the heat source 4 in the air conditioner evaporator 31 is vigorously vaporized into high-temperature high-pressure steam, and the air conditioner is evaporated by controlling the load of the air motor 51 not to exceed the set upper limit value. The pressure of the high-temperature high-pressure steam in the device 31 is also sufficient to drive the air motor 51 to operate without being higher than the pressure of the liquid-phase air-conditioning refrigerant R410a discharged from the liquid booster pump 211, so that the liquid booster pump 211 can be continuously injected. The liquid phase air conditioning refrigerant R410a to the air conditioner evaporator 31, that is, the process in which the liquid phase working medium is injected into the steam generating device 3 along the pipeline 6 under pressure can be combined with the steam generating device 3 to carry out the liquid phase in the steam generating device 3. The process of producing high-pressure steam by massification and the process of generating mechanical motion by the pneumatic actuator 5, the high-temperature and high-pressure air-conditioning refrigerant R41 formed in the air conditioner evaporator 31 0a steam flows into the air motor 51 through the pipe 6, and the air motor 51 is driven to rotate. The air conditioner refrigerant R410a is discharged from the air motor 51 and then flows into the air conditioner condenser 21, and the fan 22 sends air conditioning refrigerant to the air conditioner condenser 21. The heat of the R410a, the air-conditioning refrigerant R410a gradually liquefies when the condenser 21 gradually cools down to its evaporation temperature until it is finally completely liquefied into a low-temperature low-pressure liquid phase, which is then sucked in by the liquid booster pump 211. After the pressure is injected into the air conditioner evaporator 31, high pressure steam is generated, and then the air motor 51 is repeatedly driven to operate, reliquefy, and the like;

Obviously, in the third embodiment, the air conditioner condenser 21 performs the function of the recovery liquefaction apparatus 1 in the first embodiment, which is a preferred embodiment of the recovery liquefaction apparatus 1 in the first embodiment; the liquid booster pump 211 serves as an embodiment. The action of the injection device 2 in 1 is a preferred embodiment of the injection device 2 in the embodiment 1; the air conditioner evaporator 31 functions as the evaporation device 3 in the embodiment 1, and is a preferred embodiment of the evaporation device 3 in the embodiment 1. The air motor 51 converts the pressure energy of the input steam into mechanical energy, which is a preferred embodiment of the pneumatic actuator 5 in Embodiment 1. Obviously, if the air motor 51 is replaced by a cylinder piston mechanism or a steam turbine mechanism, It is also possible to function to convert the pressure energy of the input steam into mechanical energy, so that the cylinder piston mechanism and the steam turbine mechanism are also the preferred embodiment of the pneumatic actuator 5 of the first embodiment.

Example 4

In another embodiment of the present invention, as shown in FIG. 4, wherein the direction of the arrow indicates the flow direction of the working medium, a new steam engine in which the working fluid is cycled, including the recovery liquefaction device 1, the injection device 2, and the steam generating device 3 The steam temperature re-up device 341 and the pneumatic actuator device 5, the recovery liquefaction device 1, the injection device 2, the steam generating device 3, the steam temperature re-up device 341 and the pneumatic actuator device 5 are sequentially connected through the pipe 6 and form a circulation path, the working medium Flowing in the circulation passage, the steam generating device 3 is disposed at a position heated by the heat source 41, the steam temperature re-up device 341 is disposed at a position heated by the heat source 42, and the input of the steam temperature re-upper 341 and the output of the steam generating device 3 The port is connected, the output of the steam temperature re-up device 341 is connected to the input port of the pneumatic actuator 5, and the steam input to the steam temperature re-up device 341 is heated by the heating of the heat source 42. The heat source 41 and the heat source 42 may be the same. The heat source may also be a different heat source, the injection device 2 is preferably a liquid booster pump, and the pneumatic actuator 5 is preferably a steam turbine mechanism. The liquid booster pump sucks the liquid phase working medium located in the recovery liquefaction device 1, pressurizes the liquid phase working medium and discharges into the pipeline 6, and the liquid phase working medium flows into the steam generating device 3 along the pipeline 6 under the action of pressure. The heat source 41 indirectly heats the liquid phase working medium by heating the steam generating device 3, and the liquid phase working medium is vaporized by heating to become steam flowing into the steam temperature re-up device 341, and the temperature of the steam is further increased under the heating of the heat source 42. When the steam temperature rises, the functional force is increased and then output to the pneumatic actuator 5, because the air pressure of the input port of the pneumatic actuator 5 and the air pressure of the output port thereof are in a pressure difference, and the steam expands in the pneumatic actuator 5 to perform work, and pushes the pneumatic The execution device 5 generates mechanical motion, and the steam engine having the working temperature of the steam temperature re-up device 341 has the beneficial effects of not changing the evaporation pressure and the evaporation temperature of the liquid phase in the steam generating device 3. After the temperature of the steam is further increased and the pressure can be further increased, the pneumatic actuator 5 is input into the pneumatic actuator 5 to perform the expansion work, thereby improving the pneumatic operation. The output power and efficiency of the line device 5.

Example 5

In another embodiment of the present invention, as shown in FIG. 5, wherein the direction of the arrow indicates the flow direction of the working medium, a new steam engine in which the working fluid is cycled, characterized in that it includes a recovery liquefaction device 1, an injection device 2, The steam generating device 3 and the pneumatic actuator device 5, the recovery liquefaction device 1, the injection device 2, the steam generating device 3 and the pneumatic actuator device 5 are sequentially connected by a pipe 6 and form a circulation path, and the working medium flows in the circulation path, and the steam generating device 3 The liquid phase medium discharged from the injection device 2 is drained to the recovery liquefaction device 1 through the pipe 6, so that the liquid phase discharged from the injection device 2 and the steam discharged from the pneumatic actuator 5 are mutually beneficial. Transfer, mutual benefit heat transfer is steam to release heat to the liquid phase. As a preferred, the technical solution for achieving mutually beneficial heat transfer is: before the new steam engine is started, the liquid phase in the recovery liquefaction device 1 is left cold. Quality, after the start of the new steam engine, the injection device 2 draws the cold liquid phase in the recovery liquefaction device 1 and discharges it into the pipeline 6, the cold liquid phase working fluid The liquefaction device 1 is reached under the guidance of the pipeline 6, and the working fluid vapor discharged from the pneumatic actuator 5 also reaches the recovery liquefaction device 1. Since the temperature of the working fluid vapor is higher than the temperature of the cold liquid phase working medium, the working fluid vapor The heat is transferred indirectly to the cold liquid phase through the wall of the pipe 6 and the wall of the recovery liquefaction device 1, thereby realizing the heat preheating of the working fluid vapor discharged from the pneumatic actuator 5 from the injection device 2 The purpose of discharging the liquid phase working fluid, at the same time, also achieves the purpose of condensing the working fluid vapor with the cold liquid phase working medium; as a preferred, a new steam engine for working fluid circulation, further comprising an auxiliary cooling device 151, auxiliary The cooling device 151 is disposed at a position for cooling the recovery liquefaction device 1, including but not limited to a fan, an air conditioner, etc., and the auxiliary cooling device 151 functions as a working fluid that cannot completely discharge the pneumatic actuator 5 by using a cold liquid phase working medium. When the steam is fully condensed and liquefied in time, the auxiliary cooling device 151 is started to cool the recovery liquefaction device 1, and the condensation rate of the working fluid vapor in the recovery liquefaction device 1 is accelerated to ensure that all the flows are recovered and liquefied. The set steam is condensed into a liquid phase in time; obviously, the heat released from the working fluid vapor discharged from the pneumatic actuator 5 during the condensation process is fundamentally derived from the heat energy of the heat source, and if the released heat is lost in the environment, it is not obtained. Effective use, it will cause waste of heat energy of the heat source. The beneficial effect of the new steam engine with the working fluid circulation work with mutual benefit heat transfer provided by this embodiment is: the total heat released during the liquefaction process of the working fluid steam Or most of it is transferred to the liquid phase working fluid, so that the heat released by the condensation of the working fluid is returned to the new steam engine system for external work, greatly improving the efficiency of the new steam engine to convert thermal energy into mechanical energy, and at the same time, using cold The design of the liquid phase working fluid to cool the working fluid vapor also reduces the power required to condense the working fluid vapor, further saving energy.

Example 6

In another embodiment of the present invention, as shown in FIG. 6, wherein the direction of the arrow indicates the flow direction of the working medium, a new type of steam engine is provided, which is characterized in that it includes a recovery liquefaction device and an injection device. 2. The steam generating device 3, the heat source 4, the pneumatic actuator device 5 and the cooling device 161, the recovery liquefaction device 1, the injection device 2, the steam generating device 3 and the pneumatic actuator device 5 are sequentially connected by a pipe 6 and form a circulation path, and the working medium is Flowing in the circulation passage, the steam generating device 3 is disposed at a position heated by the heat source 4, the cooling device 161 is disposed at a position for cooling the recovery heating device 1, and when the cooling device 161 is started, the recovery liquefaction device 1 is cooled, and the fan 162 is disposed in the pipe. At 6, when the fan 162 is started, the air in the environment where the pipe 6 is located is blown to the pipe 6, and the heat transfer between the air and the pipe 6 is accelerated. Preferably, the injection device 2 is a liquid booster pump, and the pneumatic actuator 5 is a steam turbine mechanism. The cooling device 161 is an air conditioning device. Preferably, the heat source 4 is a high-temperature exhaust gas discharged from the internal combustion engine or a high-temperature coolant flowing out of the internal combustion engine, and the working fluid is preferably The refrigerant R410a, a new steam engine provided by the working fluid cycle of the present embodiment, controls the cooling power outputted to the recovery liquefaction device 1 by controlling the cooling device 161 to control the temperature of the steam discharged from the pneumatic actuator 5, preferably as a pneumatic The temperature of the steam discharged from the actuator 5 is lower than the temperature of the air in the environment in which the conduit 6 between the injection device 2 and the steam generating device 3 is located, and the liquid phase discharged from the injection device 2 is in the process of flowing to the steam generating device 3. Absorbs heat from the air.

The specific working process is: starting the cooling device 161 to cool the recovery liquefaction device 1, indirectly cooling the working fluid vapor in the recovery liquefaction device 1, and condensing the working fluid vapor into a liquid phase working medium, and the liquid phase working medium after cooling The temperature is lower than the temperature of the air in the environment in which the conduit 6 between the injection device 2 and the steam generating device 3 is located, and the injection device 2 draws the liquid phase in the recovery liquefaction device 1 and pressurizes it into the pipe 6 The liquid phase working fluid flows forward along the pipeline 6 under the action of pressure. When flowing into the pipeline section between the injection device 2 and the steam generating device 3, the temperature of the liquid phase working fluid is lower than the environment of the pipeline section. At the temperature of the air, the air begins to transfer heat to the working fluid of the liquid phase. Preferably, the fan 162 blows air to the pipe section to accelerate the transfer of heat. When the liquid phase flows into the steam generating device 3 along the pipe 6, it is indirectly insulated by the heat source 4. Heating, in the form of steam, is intensively vaporized into steam, and the working medium in the form of steam continues to flow forward along the pipeline 6 under pressure, and is input into the pneumatic actuator 5 in the pneumatic actuator 5 The expansion work is performed, and the pneumatic actuator 5 is driven to generate mechanical movement. After the expansion work is performed, the pressure will decrease and the temperature will decrease. The working fluid vapor is discharged from the pneumatic actuator 5 and continues to flow into the recovery liquefaction device 1 along the pipeline 6 to complete. After a working cycle, the cycle of condensing liquefaction, heat absorption, heat vaporization, expansion work, etc. is repeated, and the new steam engine continuously converts the heat energy of the heat source 4 and the heat energy of the air absorbed in the pipe 6 into mechanical energy. External output; because heat transfer can only be transmitted from high temperature material to low temperature material, the greater the temperature difference, the faster the heat transfer speed. Therefore, preferably, the temperature of the working fluid vapor discharged after the expansion work in the pneumatic actuator 5 is lower than The greater the temperature of the air in the environment where the pipe section between the injection device 2 and the steam generating device 3 is located, the faster the liquid phase in the pipe section absorbs the heat of the air, and preferably, after the expansion work is performed Technical solution for outputting the temperature of the working fluid vapor below the temperature of the air in the environment in which the pipe section is located When the pressure P1 and the temperature T1 of the steam to be input when the pneumatic actuator 5 is operated are constant values, by controlling the air pressure P2 value of the output port of the pneumatic actuator 5, the temperature of the working fluid steam output after the expansion work is lower than The purpose of achieving the above purpose is to achieve the above purpose: when the process time of the working fluid vapor expanding in the pneumatic actuator 5 is very short, the heat transfer between the steam and the outside during the expansion work is carried out. The heat is very small, so the process of expanding work can be approximated as the isentropic change process of steam. According to the law of the process of isentropic change, when the pressure P1 and temperature T1 of the steam input to the pneumatic actuator 5 are constant According to the pressure P1 and the temperature T1 value, the corresponding isentropic line can be found on the pressure map of the steam. According to the isentropic line, it can be seen that the steam pressure after the steam expansion work is constant, then the temperature of the steam after the expansion work is a fixed value. Therefore, the purpose of controlling the temperature of the steam discharged from the pneumatic actuator 5 can be achieved by the technical solution of controlling the air pressure P2 of the output port of the pneumatic actuator 5. It can be seen that the lower the pressure P2 value is, the lower the temperature of the discharged steam is. The preferred embodiment of controlling the air pressure P2 is to control the cooling power output to the recovery liquefaction device 1 by controlling the temperature reducing device 161. Thereby, the value of the temperature T2 of the working medium in the recovery liquefaction device 1 is controlled, the temperature T2 can control the air pressure P2, and the temperature P2 is controlled by the temperature T2. The principle is that the liquid liquefaction device 1 has both a liquid phase and a gas phase. Since the amount of the working fluid vapor flowing into the recovery liquefaction device 1 from the output port of the pneumatic actuator 5 per unit time is very small relative to the amount of the working fluid originally present in the recovery liquefaction device 1, the liquefaction is recovered in a transient state. The inside of the device 1 can be regarded as a closed container. The gas pressure of the gas phase is approximately equal to the evaporation pressure of the working medium at the temperature T2. Therefore, by controlling the value of the temperature T2, the gas pressure value of the gas phase can be controlled. When the induced pressure loss along the path is small, the gas pressure of the gas phase working fluid is approximately equal to the gas pressure P2 of the output port of the pneumatic actuator 5, so that the working fluid in the recovery liquefaction device 1 is controlled. The temperature T2 can control the air pressure P2 of the output port of the pneumatic actuator 5, and the cooling power outputted to the recovery liquefaction device 1 by the control temperature reducing device 161 can control the temperature T2, which in turn controls P2, which in turn controls the discharge of the pneumatic actuator 5. The temperature of the steam; that is, the temperature of the steam discharged from the pneumatic actuator 5 can be controlled by controlling the cooling power output to the recovery liquefaction device 1 by the temperature reducing device 161.

The novel steam engine provided by the working cycle in the embodiment realizes the function of absorbing heat from the environment and converting part of the heat energy absorbed into mechanical energy, and the total amount of heat absorbed from the environment is not limited, and It is greater than the sum of the heat emitted by the new steam engine into the environment.

The beneficial effect of the new steam engine with working fluid circulation provided by this embodiment is that when the thermal energy of the new steam engine is converted into mechanical energy, the mechanical energy output by the new steam engine is not only from a specific heat source, but also partly from the liquid phase. The heat energy absorbed by the working fluid in the flow process greatly increases the power and efficiency of the steam engine output; in particular, some natural heat sources can be used to supply heat to the new steam engine, and the natural heat energy can be used to replace part of the fossil energy. Reducing carbon dioxide emissions is of great significance.

The invention provides a novel steam engine with working fluid circulation, which is a brand-new steam engine, which can effectively convert the heat energy of a lower temperature heat source into mechanical energy, so that the conversion of the heat energy of the low temperature heat source into mechanical energy becomes possible, filling the present The steam engine of the prior art cannot convert the heat energy of the lower temperature heat source into the shortage of mechanical energy; while the lower temperature heat source is usually the natural heat energy of nature, the steam engine provided by the invention creates a feasible condition for developing natural natural heat energy, and at the same time, Compared with the steam engine of the prior art, the novel steam engine of the present invention can convert more thermal energy into mechanical energy per unit time when converting the thermal energy of the high-temperature heat source into mechanical energy, thereby improving the energy utilization efficiency.

It will be apparent to those skilled in the art that various modifications and variations can be made in the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of the invention as claimed.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are within the spirit and scope of the present invention, should be included in the scope of the present invention. Inside.

Claims

A novel steam engine with working fluid circulation, characterized in that it comprises a recovery liquefaction device (1), an injection device (2), a steam generating device (3) and a pneumatic actuator device (5), and the recovery liquefaction device (1) The injection device (2), the steam generating device (3) and the pneumatic actuator device (5) are connected by a pipe (6) and form a circulation passage in which the working medium flows;

The injection device (2) is configured to suck the working medium and pressurize the working medium, and the steam generating device (3) absorbs the external heat, thereby being located in the steam generating device (3). The liquid phase working medium is heated, the liquid phase working medium located in the steam generating device (3) is heated and at least partially vaporized into steam; the air pressure of the input port of the pneumatic actuator device (5) is greater than the air pressure at the output port thereof. The steam is input into the pneumatic actuator (5) to expand work, and the pneumatic actuator (5) generates mechanical motion under the action of the expansion work, and the steam is executed from the pneumatic after completing the expansion work. The device (5) is discharged, and the recovery liquefaction device (1) liquefies the steam flowing therein.
A steam engine according to claim 1, wherein said working fluid has a saturated vapor pressure higher than a saturated vapor pressure of water at the same temperature.
A steam engine according to claim 1, further comprising a logic control unit (8), said logic control unit (8) for said recovery liquefaction device (1), said injection device (2), said The steam generating device (3) and the pneumatic actuator (5) are controlled.
The steam engine according to claim 1, characterized in that said recovery liquefaction device (1), said injection device (2), said steam generating device (3) and said pneumatic actuator device (5) pass through a pipe ( 6) Connect sequentially and form a circular path.
The steam engine according to claim 1, characterized in that said injection device (2), said recovery liquefaction device (1), said steam generating device (3) and said pneumatic actuator device (5) pass through a pipe ( 6) Connect sequentially and form a circular path.
A steam engine according to claim 2, wherein said working fluid is a substance having a saturated vapor pressure of not less than 0.4 MPa at 100 °C.
A steam engine according to claim 2, wherein said working fluid is a substance having a saturated vapor pressure of not less than 0.4 MPa at 50 °C.
A steam engine according to claim 2, wherein said working fluid is a substance having a difference between a saturated vapor pressure at 50 ° C and a saturated vapor pressure at 25 ° C of not less than 0.4 MPa.
The steam engine according to claim 2, wherein the working fluid includes, but not limited to, carbon dioxide, ammonia gas, air conditioning refrigerant R134a, air conditioning refrigerant R410a, air conditioning refrigerant R32, and the like.
The steam engine according to claim 4, characterized in that the pneumatic actuator (5) is a pneumatic motor or a cylinder piston mechanism or a steam turbine mechanism, and the recovery liquefaction device (1) is an air conditioning condenser of an air conditioning system (21) The injection device (2) is a liquid booster pump (211), and the steam generating device (3) is an air conditioner evaporator (31).
The steam engine according to claim 5, characterized in that the pneumatic pressure is controlled by controlling the injection device (2) to control the air pressure of the output port of the pneumatic actuator (5) by taking the amount of the working medium per unit time. The temperature of the steam discharged from the device (5).
The steam engine according to claim 5, characterized in that said recovery liquefaction device (1), said injection device (2) and said steam generating device (3) are integrated into an air conditioning condenser (21) of an air conditioning system, The air conditioner compressor (11) is combined with the air conditioner evaporator (31).
A steam engine according to claim 1, characterized in that said external heat is a heat source (4) provided at the steam generating means (3), said heat source (4) being used for said steam generating means (3) Providing heat, the heat source (4) having a heating temperature of less than 200 °C.
The steam engine according to claim 13, characterized in that the heat source (4) has a heating temperature in the range of 70 ° C to 150 ° C.
A steam engine according to claim 13, characterized in that said heat source (4) is natural thermal energy including, but not limited to, thermal energy possessed by air and radiant heat energy of the sun.
A steam engine according to claim 1, characterized in that a check valve (23) is arranged in the input line of the steam generating device (3).
The steam engine according to claim 3, characterized in that the output line of the steam generating device (3) comprises a first branch (61) of the duct and a second branch (62) of the duct, the first branch of the duct (61) ) for communicating the pneumatic actuator (5), the second branch (62) of the pipeline is provided with a valve (63), the valve (63) is opened under the control of the logic control unit (8) or shut down.
The steam engine according to claim 4, wherein said injection device (2) sucks a liquid phase working medium located in said recovery liquefaction device (1) and pressurizes said liquid phase working medium, said liquid The phase fluid is injected into the steam generating device (3) along the pipeline (6) under pressure, and the liquid phase is vaporized into steam in the steam generating device (3) and then input into the pneumatic actuator ( 5) The steam flows into the recovery liquefaction device (1) after being expanded in the pneumatic actuator (5).
The steam engine according to claim 18, characterized in that the liquid phase working medium is injected into the steam generating device (3) along the pipe (6) under pressure and the steam generating device (3) is steamed The process of vaporizing the working fluid of the liquid phase in the generating device (3) into steam and the process of generating mechanical motion with the pneumatic actuator (5) are performed simultaneously.
The steam engine according to claim 1, further comprising a steam temperature re-up device (341) disposed at a position heated by a heat source, said steam temperature re-lifting device An input port of (341) is connected to an output port of the steam generating device (3), and an output port of the steam temperature re-up device (341) is connected to an input port of the pneumatic actuator device (5), and the The steam of the steam temperature re-lifting device (341) is heated by the heating of the heat source.
The steam engine according to claim 18, characterized in that the liquid phase medium discharged from the injection device (2) and the steam discharged from the pneumatic actuator (5) perform mutually beneficial heat transfer, the mutually beneficial heat transfer The heat is released to the liquid phase for the steam.
A steam engine according to claim 21, further comprising an auxiliary cooling device (151), said auxiliary cooling device (151) being disposed at a position for cooling the steam discharged from said pneumatic actuator (5), said The auxiliary cooling device (151) includes, but is not limited to, a fan, an air conditioner.
A steam engine according to claim 18, further comprising a temperature lowering means (161), said temperature lowering means (161) being disposed at a position for cooling said recovery liquefaction means (1), by controlling said temperature lowering means ( 161) The cooling power output to the recovery liquefaction device (1) to control the temperature of the steam discharged from the pneumatic actuator (5).
A steam engine according to claim 23, wherein said temperature lowering means (161) is an air conditioning apparatus.
Steam engine according to claim 18, characterized in that the temperature of the steam discharged by the pneumatic actuator (5) is lower than the line between the injection device (2) and the steam generating device (3) ( 6) The temperature of the air in the environment.
A steam engine according to claim 18, characterized in that the liquid phase medium discharged from the injection device (2) absorbs heat during the flow to the steam generating device (3).
A steam engine according to claim 26, characterized in that the heat absorbed by the liquid phase medium discharged from the injection device (2) during the flow to the steam generating device (3) originates from nature.
The steam engine according to claim 27, characterized in that the source of the heat absorbed by the liquid phase medium discharged from the injection device (2) during the flow to the steam generating device (3) is located at The air in the environment where the conduit (6) between the injection device (2) and the steam generating device (3) is located.
A steam engine according to claim 28, characterized in that the heat source (4) for supplying heat to said steam generating means (3) is a high-temperature exhaust gas discharged from the internal combustion engine and/or a high-temperature coolant flowing out of the internal combustion engine.
The steam engine according to claim 1, wherein when the heating temperature of the external heat is higher than 200 ° C, the evaporation temperature of the working medium in the steam generating device (3) is in the range of 30 ° C to 100 ° C. Inside.
The steam engine according to claim 1, wherein when the heating temperature of the external heat is equal to or lower than 200 ° C, the evaporation temperature of the working medium in the steam generating device (3) is between 0 ° C and 100 Within the °C range.