Steam engine

Abstract

The present invention discloses a steam engine, comprising: a fuel supply device, a flameless combustion device, a first heat exchanger, and a second heat exchanger that are connected in sequence. The fuel supply device is used to supply fuel into the flameless combustion device. The flameless combustion device is used for the reaction of the fuel to generate heat to form high-temperature gas, and the high-temperature gas is blown towards the first heat exchanger and the second heat exchanger. The first heat exchanger uses the high-temperature gas to convert the water provided by the water tank into steam and discharge it. The second heat exchanger uses the water provided in the water tank to cool the remaining high-temperature gas and discharge it. The present invention can consume a small amount of electricity and methanol to generate a large amount of steam heat from water for cleaning road guardrails, can be used for disinfection with high temperature, etc., which is convenient, fast and efficient, saving a large amount of manpower and energy consumption. In addition, the present invention uses flameless combustion of methanol to provide heat, and the temperature is not very high, so the safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of steam engines, and more particularly, to a steam engine. Background Art

[0002] A steam engine, also known as a steam generator, is a heating device widely used in various industries such as hospitals, bathrooms, restaurants, hotels, guesthouses, textiles, metallurgy, clothing, packaging, food, etc. Existing steam generators mainly consist of a heating cavity and a heating element. An inlet for cold water and a steam outlet communicating with the inner cavity are provided on the heating cavity. After the cold water enters the inner cavity, it is heated by the heating element into steam, and the steam can be ejected from the steam outlet.

[0003] Traditional steam engines have low thermal efficiency, high steam humidity, high usage costs, single uses, large volumes, inconvenient use, and high safety hazards. Therefore, it is necessary to propose a steam engine to at least partially solve the problems existing in the prior art. Summary of the Invention

[0004] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further elaborated in the Detailed Description section. The Summary of the Invention section of the present invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0005] To at least partially solve the above problems, the present invention provides a steam engine, comprising: a fuel supply device, a flameless combustion device, a first heat exchanger, and a second heat exchanger connected in sequence. The fuel supply device is used to supply fuel into the flameless combustion device. The flameless combustion device is used for the fuel to react to generate heat to form high-temperature gas, and blow the high-temperature gas to the first heat exchanger and the second heat exchanger. The first heat exchanger uses the high-temperature gas to convert the water provided by the water tank into steam and discharge it. The second heat exchanger uses the water provided in the water tank to cool the remaining high-temperature gas and discharge it.

[0006] Preferably, the flameless combustion device comprises: a flameless combustion reaction chamber and a blower. A heater and a flameless combustion reactor are provided in the flameless combustion reaction chamber. The blower is used to provide high-pressure air flow into the flameless combustion reaction chamber. The heater is used to heat the catalyst in the flameless combustion reactor. The catalyst is used to react with the fuel to generate heat.

[0007] Preferably, a first temperature sensor and a second temperature sensor are provided in the flameless combustion reaction chamber, and a third temperature sensor is provided at the gas outlet end of the flameless combustion reaction chamber;

[0008] The first temperature sensor is used to detect the temperature of the heater. When the temperature of the heater reaches 60 degrees Celsius, it controls the fuel supply device to supply fuel to the flameless combustion reaction chamber.

[0009] The second temperature sensor is used to detect the temperature inside the flameless combustion reaction chamber.

[0010] The third temperature sensor is used to detect the temperature at the outlet end of the flameless combustion reaction chamber.

[0011] Preferably, a first water outlet pipe is provided at the water outlet end of the water tank. The first water outlet pipe is selectively communicated with the water inlet end of the first heat exchanger through a first connecting pipe, and the first connecting pipe provides atomized water to the first heat exchanger through a nozzle provided at its end. The first water outlet pipe is selectively communicated with the water inlet end of the second heat exchanger through a second connecting pipe. The water outlet end of the second heat exchanger is selectively communicated with the water tank through a third connecting pipe, and a radiator is provided on the third connecting pipe.

[0012] Preferably, a first gas outlet pipe for discharging water vapor is provided on the first heat exchanger. A fourth temperature sensor is provided inside the first gas outlet pipe, and a fifth temperature sensor is provided inside the first heat exchanger. When the temperature inside the first gas outlet pipe detected by the fourth temperature sensor and the temperature inside the first heat exchanger detected by the fifth temperature sensor are both greater than 105 degrees Celsius, it controls the water tank to supply water to the first heat exchanger and the second heat exchanger.

[0013] Preferably, a pressure sensor is provided on the first gas outlet pipe, a sixth sensor is provided on the third connecting pipe near the second heat exchanger, a second gas outlet pipe is provided on the second heat exchanger, and a seventh temperature sensor for detecting the temperature of the discharged exhaust gas is provided on the second gas outlet pipe.

[0014] When the temperature of the third connecting pipe detected by the sixth sensor is greater than 70 degrees Celsius, or the pressure inside the first gas outlet pipe detected by the pressure sensor is greater than 0.3 Mpa,

[0015] The following operations are carried out simultaneously:

[0016] The radiator is turned on,

[0017] The second temperature sensor detects whether the first temperature inside the flameless combustion reaction chamber exceeds the first temperature threshold,

[0018] The third temperature sensor detects whether the second temperature at the outlet end of the flameless combustion reaction chamber exceeds the second temperature threshold,

[0019] If the first temperature exceeds the first temperature threshold, or the second temperature exceeds the second temperature threshold, then control the fuel supply device to adjust the amount of fuel supplied to the flameless combustion reaction chamber, or adjust the water injection amount of the nozzle.

[0020] Preferably, the fuel supply device includes: a fuel tank and a diaphragm pump, the diaphragm pump is used to transport liquid fuel into the fuel tank, a power unit and a liquid level sensor are provided in the fuel tank, the liquid fuel in the fuel tank is transported into the flameless combustion device through the power unit, and the liquid level sensor is used to detect the remaining amount of the liquid fuel in the fuel tank.

[0021] Preferably, the nozzle includes: a nozzle head, the nozzle head is connected to the first water outlet pipe, a first conical hole is provided at one end of the interior of the nozzle head close to the first water outlet pipe, a second conical hole is provided at the end of the first conical hole away from the first water outlet pipe, the taper of the second conical hole is greater than the taper of the first conical hole, a plurality of first air inlet holes arranged in a spiral shape are provided on the inner wall of the first conical hole, and a plurality of second air inlet holes arranged obliquely are provided on the inner wall of the second conical hole;

[0022] An air inlet sleeve is sleeved outside the nozzle head, a first annular hole communicated with the first air inlet hole and a second annular hole communicated with the second air inlet hole are provided on the inner side wall of the air inlet sleeve, a third air inlet hole communicated with the first annular hole and a fourth air inlet hole communicated with the second annular hole are further provided on the air inlet sleeve, the third air inlet hole is selectively communicated with the air supply part, and the fourth air inlet hole is communicated with the high-temperature gas introduced into the first heat exchanger.

[0023] Preferably, the first air outlet pipe is fixed on the steam engine through a fixing device, the fixing device includes a plurality of fixing rods and a plurality of fixing rings, the fixing rings are sleeved outside the first air outlet pipe, the fixing rods are distributed along the circumferential direction of the first air outlet pipe, the fixing rods are fixedly connected with the fixing rings, a first ventilation hole is provided inside the fixing rods, a second ventilation hole communicated with the first ventilation hole is provided inside the fixing rings, and a plurality of air bags are provided on one side of each fixing rod in contact with the outer surface of the first air outlet pipe, and the air bags are communicated with the first ventilation hole and the second ventilation hole;

[0024] A vibration control valve is provided on at least one of the fixing rings, and the fixing ring is selectively communicated with the second air outlet pipe through the vibration control valve.

[0025] Preferably, the vibration control valve includes: a valve body provided with a first communication hole communicating with the second ventilation hole of the fixed ring, a second communication hole communicating with the second air outlet pipe on one side of the valve body, a sealing plug body for blocking the second communication hole arranged in the first communication hole, a connecting rod arranged at one end of the sealing plug body, a permanent magnet arranged at the end of the connecting rod away from the sealing plug body, an electromagnet connected to the permanent magnet by a spring at the end of the permanent magnet away from the connecting rod, and the electromagnet is fixedly arranged in the first communication hole; a vibration detector electrically connected to the electromagnet is arranged on the valve body.

[0026] Compared with the prior art, the present invention has at least the following beneficial effects:

[0027] The steam engine of the present invention can be directly prepared into an integrated device for use, and a power supply device can be arranged on the steam engine, so it can work by moving over a long distance, greatly increasing convenience. For example, in cold winters, roads and road guardrails will be covered with ice and snow, and may be stained with oil and other stains. Since the road surface is extensive and it is difficult to clean by conventional means, it is difficult and time-consuming and labor-intensive for manual or machine cleaning. Therefore, after the steam engine of the present invention is mounted on a cleaning vehicle, these problems can be well solved. A small amount of electricity and methanol can be consumed to generate a large amount of steam heat from water for cleaning road guardrails, etc., which can effectively utilize high-temperature snow melting and stain cleaning, and the generated steam has a low water content and will not freeze in winter work, thus having no impact; for another example, when some stores need disinfection and cleaning and have requirements for odors, etc., the steam engine of the present invention can use high temperature for disinfection without generating abnormal odors, which is convenient, fast and efficient, saving a large amount of manpower and energy consumption. In addition, the present invention uses flameless combustion of methanol to provide heat, and the temperature of the flameless combustion device is not very high, so the safety is improved and explosions and other situations will not occur.

[0028] For the steam engine of the present invention, other advantages, objectives and features of the present invention will be partially reflected by the following description, and partially will be understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0030] Figure 1 is a partial structural schematic diagram of the steam engine of the present invention;

[0031] Figure 2 is a schematic diagram of the principle of the steam engine of the present invention;

[0032] Figure 3 Structural schematic diagram of the nozzle in the steam engine of the present invention;

[0033] Figure 4 Structural schematic diagram of the fixing device in the steam engine of the present invention;

[0034] Figure 5 Structural schematic diagram of the fixing rod and the air bag in the steam engine of the present invention;

[0035] Figure 6 Structural schematic diagram of the vibration control valve in the steam engine of the present invention. Detailed implementation manners

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, so that those skilled in the art can implement it with reference to the text of the specification.

[0037] It should be understood that the terms such as "having", "comprising" and "including" used herein do not exclude the presence or addition of one or more other elements or their combinations.

[0038] As Figures 1-6 shown, the present invention provides a steam engine, comprising: a fuel supply device, a flameless combustion device, a first heat exchanger 1 and a second heat exchanger 2 connected in sequence. The fuel supply device is used to supply fuel into the flameless combustion device. The flameless combustion device is used to supply fuel to react to generate heat to form high-temperature gas, and blow the high-temperature gas to the first heat exchanger 1 and the second heat exchanger 2. The first heat exchanger 1 uses the high-temperature gas to convert the water provided by the water tank 3 into steam and discharge it. The second heat exchanger 2 uses the water provided in the water tank 3 to cool the remaining high-temperature gas and discharge it.

[0039] The working principle of the above technical solution: The fuel supplied by the fuel supply device is methanol. A large amount of heat is generated by the catalytic oxidation reaction of methanol to form high-temperature gas. Then the high-temperature gas is transported towards the first heat exchanger 1 and the second heat exchanger 2. The water tank 3 supplies water to the first heat exchanger 1 and the second heat exchanger 2 at the same time. The high-temperature gas first passes through the first heat exchanger 1 to turn the water sprayed into the inside of the first heat exchanger 1 into steam and spray it out. Then the high-temperature gas that has undergone the first heat exchange passes through the second heat exchanger 2 for cooling. The cooling water is provided by the water tank 3. Finally, the high-temperature gas is discharged from the second heat exchanger 2.

[0040] Beneficial effects of the above technical solution: The present invention can be directly prepared into an integrated device for use. A power supply device can be set on the steam engine, so it can work by moving over a long distance, greatly increasing convenience. For example, in cold winters, the road surface and road guardrails will freeze and accumulate snow, and may also accumulate stains such as oil stains. Since the road surface area is large and it is difficult to clean by conventional means, it is difficult for manual or machine cleaning, time-consuming and labor-intensive. Therefore, after the steam engine described in the present invention is mounted on a cleaning vehicle, these problems can be well solved. A small amount of electricity and methanol can be consumed to make water generate a large amount of steam heat for cleaning road guardrails, etc. It can effectively utilize high-temperature snow melting and stain cleaning, and the generated steam has a low water content and will not freeze and cause interference during winter work; for another example, when some stores need disinfection and cleaning and have requirements for odors, etc., the steam engine described in the present invention can use high temperature for disinfection, will not generate abnormal odors, is convenient, fast and efficient, saving a large amount of manpower and energy consumption. In addition, the present invention uses methanol flameless combustion to provide heat, and the temperature of the flameless combustion device is not very high, so the safety is improved and explosions and other situations will not occur.

[0041] In one embodiment, the flameless combustion device includes a flameless combustion reaction chamber 4 and a blower 10. A heater 5 and a flameless combustion reactor 6 are provided in the flameless combustion reaction chamber 4. The blower 10 is used to provide high-pressure air flow into the flameless combustion reaction chamber 4. The heater 5 is used to heat the catalyst in the flameless combustion reactor 6, and the catalyst is used to react with the fuel to generate heat.

[0042] Working principle and beneficial effects of the above technical solution: In the early stage, the heater 5 uses a small amount of electric energy to preheat the catalyst, and then methanol is sprayed into the flameless combustion reaction chamber 4 to generate a large amount of heat. The high-pressure blower 10 provides high-pressure air flow into the flameless combustion reaction chamber 4, so as to form high-temperature gas blowing towards the first heat exchanger 1 and the second heat exchanger 2, achieving the purpose of saving electric energy.

[0043] In one embodiment, a first temperature sensor 7 and a second temperature sensor 8 are provided in the flameless combustion reaction chamber 4, and a third temperature sensor 9 is provided at the air outlet end of the flameless combustion reaction chamber 4;

[0044] The first temperature sensor 7 is used to detect the temperature of the heater 5. When the temperature of the heater 5 reaches 60 degrees Celsius, it controls the fuel supply device to supply fuel into the flameless combustion reaction chamber 4;

[0045] The second temperature sensor 8 is used to detect the temperature in the flameless combustion reaction chamber 4;

[0046] The third temperature sensor 9 is used to detect the temperature at the air outlet end of the flameless combustion reaction chamber 4.

[0047] Working principle and beneficial effects of the above technical solution: When the temperature of the heater 5 reaches 60 degrees Celsius, the preheating of the catalyst is completed, so that the fuel supply device can be controlled to inject methanol into the flameless combustion reaction chamber 4. A large amount of heat is generated when methanol reacts with the preheated catalyst. The heat and the airflow of the blower 10 form high-temperature gas. The second temperature sensor 8 and the third temperature sensor 9 are used to detect the temperature inside and at the air outlet end of the flameless combustion reaction chamber 4, so as to monitor the heat generated by the methanol reaction, so as to control the temperature when the steam engine is in use.

[0048] In one embodiment, a first water outlet pipe 11 is provided at the water outlet end of the water tank 3. The first water outlet pipe 11 is selectively communicated with the water inlet end of the first heat exchanger 1 through a first connecting pipe 12, and the first connecting pipe 12 provides atomized water to the first heat exchanger 1 through a nozzle provided at its end. The first water outlet pipe 11 is selectively communicated with the water inlet end of the second heat exchanger 2 through a second connecting pipe 13. The water outlet end of the second heat exchanger 2 is selectively communicated with the water tank 3 through a third connecting pipe 14, and a radiator 15 is provided on the third connecting pipe 14.

[0049] Working principle and beneficial effects of the above technical solution: A first solenoid valve is provided on the first connecting pipe 12, a second solenoid valve is provided on the second connecting pipe 13, and a third solenoid valve is provided on the third connecting pipe 14. When the first solenoid valve is opened, the first connecting pipe 12 is communicated with the water tank 3 through the first water outlet pipe 11. The water tank 3 can supply water to the nozzle. After the water is atomized by the nozzle, it is sprayed from the water inlet end of the first heat exchanger 1 onto the heat exchanger inside it. There is high-temperature gas passing through the heat exchanger, so that the temperature of the heat exchanger increases. Therefore, the atomized water sprayed onto the heat exchanger can exchange heat with the high-temperature gas faster, so as to form steam and spray out from the first heat exchanger 1. When the second solenoid valve is opened, the water tank 3 supplies water to the second heat exchanger 2. At this time, the water exchanges heat with the heat exchanger inside the second heat exchanger 2, so as to cool the high-temperature gas inside the heat exchanger, and the exhaust gas can be discharged at a lower temperature. If the cooling effect of the second heat exchanger 2 is not good, the second solenoid valve and the third solenoid valve can be controlled to be opened at the same time. At this time, circulating water is formed in the second heat exchanger 2, and the circulating water is cooled by the radiator 15 before entering the water tank 3, so as to accelerate the cooling efficiency before the high-temperature gas is discharged and prevent safety problems caused by too high exhaust gas temperature.

[0050] It should be noted that heat exchangers are provided inside both the first heat exchanger 1 and the second heat exchanger 2. The high-temperature gas passes through the inside of the heat exchanger, and there is a sealed space between the heat exchanger and the outer shells of the first heat exchanger 1 and the second heat exchanger 2. This space is used for heat exchange between the heat exchanger and water, turning the atomized water sprayed into the first heat exchanger 1 into water vapor. After the high-temperature gas exchanges heat with the atomized water in the first heat exchanger 1 and its temperature drops, it then enters the heat exchanger of the second heat exchanger 2 and is cooled by the water in the second heat exchanger 2, and then discharged.

[0051] In one embodiment, a first gas outlet pipe 16 for discharging water vapor is provided on the first heat exchanger 1. A fourth temperature sensor 17 is provided inside the first gas outlet pipe 16, and a fifth temperature sensor 18 is provided inside the first heat exchanger 1. When the temperature inside the first gas outlet pipe 16 detected by the fourth temperature sensor 17 and the temperature inside the first heat exchanger 1 detected by the fifth temperature sensor 18 are both greater than 105 degrees Celsius, the water tank 3 is controlled to supply water to the first heat exchanger 1 and the second heat exchanger 2.

[0052] The working principle and beneficial effects of the above technical solution: The fifth temperature sensor 18 is used to detect the surface temperature of the heat exchanger inside the first heat exchanger 1. When the temperature inside the first gas outlet pipe 16 detected by the fourth temperature sensor 17 and the temperature inside the first heat exchanger 1 detected by the fifth temperature sensor 18 are both greater than 105 degrees Celsius, the water tank 3 is then controlled to supply water to the first heat exchanger 1 and the second heat exchanger 2. The purpose is to ensure the temperature at which water vaporizes inside the first heat exchanger 1 to ensure the formation of water vapor, and the temperature of the first gas outlet pipe 16 also reaches 105 degrees Celsius. The purpose is to prevent the phenomenon of condensation when the water vapor passes through the first gas outlet pipe 16, reducing the gas outlet volume of the water vapor, ensuring the effective formation and stable discharge of the water vapor, and improving the efficiency of the steam generator in preparing water vapor.

[0053] In one embodiment, a pressure sensor 19 is provided on the first gas outlet pipe 16, a sixth temperature sensor 20 is provided on the third connecting pipe 14 near the second heat exchanger 2, a second gas outlet pipe 21 is provided on the second heat exchanger 2, and a seventh temperature sensor 22 for detecting the temperature of the exhausted waste gas is provided on the second gas outlet pipe 21;

[0054] When the temperature of the third connecting pipe 14 detected by the sixth temperature sensor 20 is greater than 70 degrees Celsius, or the pressure inside the first gas outlet pipe 16 detected by the pressure sensor 19 is greater than 0.3 Mpa,

[0055] The following operations are carried out simultaneously:

[0056] The radiator 15 is turned on,

[0057] The second temperature sensor 8 detects whether the first temperature in the flameless combustion reaction chamber 4 exceeds the first temperature threshold.

[0058] The third temperature sensor 9 detects whether the second temperature at the gas outlet end of the flameless combustion reaction chamber 4 exceeds the second temperature threshold.

[0059] If the first temperature exceeds the first temperature threshold, or the second temperature exceeds the second temperature threshold, then control the fuel supply device to adjust the amount of fuel supplied into the flameless combustion reaction chamber 4, or adjust the water injection amount of the nozzle.

[0060] The working principle and beneficial effects of the above technical solution: The temperature of the third connecting pipe 14 detected by the sixth temperature sensor 20 is the outlet water temperature of the cooling water in the second heat exchanger 2. Too high a temperature here can reflect whether the heat generated in the flameless combustion reaction chamber 4 is excessive. Excessive heat will cause the high-temperature gas after passing through the first heat exchanger 1 to not be sufficiently cooled in the second heat exchanger 2; or whether there is an abnormality in the water sprayed by the nozzle, resulting in insufficient heat exchange between the water and the high-temperature gas in the first heat exchanger 1. Both situations will cause the temperature of the cooling water in the second heat exchanger 2 to rise. Therefore, it is necessary to turn on the radiator 15 to reduce the temperature of the circulating water in the second heat exchanger 2, so as to achieve the purpose of cooling the exhaust gas, and at the same time detect whether the temperature inside and at the gas outlet end of the flameless combustion reaction chamber 4 is abnormal to judge whether the heat generated in the flameless combustion reaction chamber 4 is excessive.

[0061] The pressure of the first gas outlet pipe 16 detected by the pressure sensor 19 is the pressure of the water vapor passing through the first gas outlet pipe 16, which can reflect that the gas outlet volume of the water vapor is too large. The higher the temperature of the high-temperature gas introduced into the first heat exchanger 1, the greater the amount of water vapor generated, or the larger the amount of water sprayed by the nozzle, which will also make the generated amount of water vapor large.

[0062] The above two situations can be solved by the following methods.

[0063] If the above problems can be solved by turning on the radiator 15 and the temperatures inside and at the gas outlet end of the flameless combustion reaction chamber 4 are normal, it proves that only the temperature of the cooling water is too high. If the problems cannot be solved by turning on the radiator 15 and the temperatures inside and at the gas outlet end of the flameless combustion reaction chamber 4 are normal, then it is necessary to adjust the amount of water sprayed by the nozzle. If the problems cannot be solved by turning on the radiator 15 and the temperatures inside and at the gas outlet end of the flameless combustion reaction chamber 4 are abnormal, then it is necessary to adjust the fuel supply device to adjust the amount of fuel supplied into the flameless combustion reaction chamber 4.

[0064] During the operation of the steam engine, the temperature sensor and the pressure sensor monitor the temperature and pressure at various locations in real time to ensure the normal operation of the steam engine and the normal ejection of steam. By double-checking the temperature of the third connecting pipe 14 and the pressure in the first exhaust pipe 16, the working condition of the steam engine and the steam ejection condition can be better monitored to prevent abnormalities.

[0065] In one embodiment, the fuel supply device includes: a fuel tank 23 and a diaphragm pump 24. The diaphragm pump 24 is used to transport liquid fuel into the fuel tank 23. A power unit 25 and a liquid level sensor are provided in the fuel tank 23. The liquid fuel in the fuel tank 23 is transported into the flameless combustion device through the power unit 25. The liquid level sensor is used to detect the remaining amount of the liquid fuel in the fuel tank 23.

[0066] The working principle and beneficial effects of the above technical solution: The liquid level sensor is used to detect the amount of liquid fuel in the fuel tank 23. When the fuel tank 23 is short of fuel, the diaphragm pump 24 is controlled to transport liquid fuel into the fuel tank 23. The power unit 25 is used to transport the liquid fuel in the fuel tank 23 into the flameless combustion device. The liquid fuel is sprayed onto the catalyst to enable full contact and reaction between the two.

[0067] In one embodiment, the nozzle includes: a nozzle head 26. The nozzle head 26 is connected to the first water outlet pipe 11. A first tapered hole 261 is provided at one end of the interior of the nozzle head 26 close to the first water outlet pipe 11. A second tapered hole 262 is provided at the end of the first tapered hole 261 away from the first water outlet pipe 11. The taper of the second tapered hole 262 is greater than that of the first tapered hole 261. A plurality of first air intake holes 263 arranged in a spiral shape are provided on the inner wall of the first tapered hole 261. A plurality of second air intake holes 264 arranged obliquely are provided on the inner wall of the second tapered hole 262;

[0068] An air intake sleeve 27 is sleeved outside the nozzle head 26. A first annular hole 271 communicating with the first air intake hole 263 and a second annular hole 272 communicating with the second air intake hole 264 are provided on the inner side wall of the air intake sleeve 27. A third air intake hole 273 communicating with the first annular hole 271 and a fourth air intake hole 274 communicating with the second annular hole 272 are further provided on the air intake sleeve 27. The third air intake hole 273 is selectively communicated with the air supply part, and the fourth air intake hole 274 is communicated with the high-temperature gas introduced into the first heat exchanger 1.

[0069] Working principle and beneficial effects of the above technical solution: One end of the nozzle 26 connected to the first water outlet pipe 11 is used to provide high-pressure water. The high-pressure water flows through the first tapered hole 261 and the second tapered hole 262 in sequence, and then forms water mist and sprays out from the water outlet of the nozzle 26; the fourth air inlet hole 274 is communicated with the high-temperature gas introduced into the first heat exchanger 1. After the high-temperature gas is introduced into the heat exchanger of the first heat exchanger 1, the second annular hole 272 is filled with high-temperature gas. The high-speed water flow flowing through the second tapered hole 262 forms a negative pressure at the second air inlet hole 264. Thus, the high-temperature gas is sprayed out onto the surface of the heat exchanger in the first heat exchanger 1 together with the water flow in the second tapered hole 262. After the high-temperature gas is mixed with the water flow, it can initially increase the temperature of the water flow, thereby accelerating the heat exchange speed of the water sprayed onto the surface of the heat exchanger, and further increasing the speed of water vapor formation, and improving the efficiency of the steam engine in preparing water vapor; a one-way valve is provided in the third air inlet hole 273. When the air supply part does not supply air, the third air inlet hole 273 is in a closed state. When the amount of water vapor is too large, that is, when the water content in the water vapor is too large, high-pressure gas can be introduced into the third air inlet hole 273 by using an external air supply part. The high-pressure gas first enters the first annular hole 271, and then passes through the first air inlet hole 263. Under the spiral diversion of a plurality of first air inlet holes 263, the high-pressure gas can be swirled into the high-pressure water flow, so as to be efficiently mixed with the water flow, thereby increasing the air content in the water flow, and further reducing the amount of water sprayed per unit time, so that the water content in the generated water vapor is effectively reduced. It is especially suitable for melting ice and snow on the road surface in winter. Through the simple structural design of the nozzle 26, the water content in the water vapor can be effectively changed to adapt to different usage situations, increasing the diversity of the steam engine; among them, the air source of the air supply part can utilize part of the waste gas discharged from the second water outlet pipe 21 to achieve the purpose of energy saving.

[0070] In one embodiment, the water content of the water vapor is adjusted by the following method,

[0071] Step 1: Determine the water content μ of the currently discharged water vapor:

[0072]

[0073] where, Q 2m is the mass flow rate of the gaseous water in the water vapor discharged per unit time, and Q 3m is the mass flow rate of the water vapor discharged per unit time;

[0074] Step 2: Establish a relational expression between the steam output of the water vapor and the intake air flow rate of the third air inlet hole 273,

[0075]

[0076] where, Q 1mis the mass flow rate of the gas entering from the third air inlet hole 273 per unit time, Q 2m is the mass flow rate of the gaseous water in the water vapor discharged per unit time, Q 1n is the molar flow rate of the gas entering from the third air inlet hole 273 per unit time, Q 2n is the molar flow rate of the gaseous water in the water vapor discharged per unit time, M 1 is the molar mass of the gas entering from the third air inlet hole 273, M 2 is the molar mass of the water entering from the nozzle 26;

[0077] Step 3: While ensuring that the mass flow rate of the water vapor discharged per unit time is constant, control the magnitude of the mass flow rate of the gas entering from the third air inlet hole 273 through the relational expression in Step 2, thereby adjusting the water content of the discharged water vapor.

[0078] The working principle and beneficial effects of the above technical solution: In this embodiment, the gas entering from the fourth air inlet hole 274 can be ignored; the water content in the water vapor is related to the gas flow rate entering from the third air inlet hole 273. The larger the gas flow rate entering, the more gas is mixed into the water, and the relatively less water content in the finally formed water vapor. Therefore, the water content of the water vapor can be adjusted under different usage environments. For example, when dealing with ice and snow on the road surface in winter, water vapor with less water content can be selected, and it can be adjusted by regulating the gas flow rate filled into the third air inlet hole 273 by the air supply part, and the operation is simple and convenient.

[0079] In one embodiment, the first air outlet pipe 16 is fixed to the steam engine through a fixing device. The fixing device includes a plurality of fixing rods 28 and a plurality of fixing rings 29. The fixing rings 29 are sleeved outside the first air outlet pipe 16. The fixing rods 28 are distributed along the circumferential direction of the first air outlet pipe 16. The fixing rods 28 are fixedly connected to the fixing rings 29. A first ventilation hole is provided inside the fixing rods 28. A second ventilation hole communicating with the first ventilation hole is provided inside the fixing rings 29. A plurality of air charging bags 31 are provided on one side of the fixing rods 28 in contact with the outer surface of the first air outlet pipe 16. The air charging bags 31 are communicated with the first ventilation hole and the second ventilation hole;

[0080] At least one of the fixing rings 29 is provided with a vibration control valve 30. The fixing ring 29 is selectively communicated with the second air outlet pipe 21 through the vibration control valve 30;

[0081] The vibration control valve 30 includes: a valve body 301, a first communication hole 302 communicated with a second ventilation hole of the fixed ring 29 is arranged in the valve body 301, a second communication hole 303 communicated with the second air outlet pipe 21 is arranged on one side of the valve body 301, a sealing plug body 304 for blocking the second communication hole 303 is arranged in the first communication hole 302, a connecting rod 305 is arranged at one end of the sealing plug body 304, a permanent magnet 306 is arranged at one end of the connecting rod 305 away from the sealing plug body 304, an electromagnet 308 is connected to one end of the permanent magnet 306 away from the connecting rod 305 through a spring 307, and the electromagnet 308 is fixedly arranged in the first communication hole 302; a vibration detector electrically connected to the electromagnet 308 is arranged on the valve body 301.

[0082] Working principle and beneficial effects of the above technical solution: The first air outlet pipe 16 is fixed to the steam engine through a fixing device. When water vapor passes through the first air outlet pipe 16, the water vapor will impact the first air outlet pipe 16, causing vibration. This not only generates noise but also has an adverse effect on the connection of the pipeline. In the prior art, most methods involve wrapping a shock-absorbing and noise-reducing structure such as sponge or foam material around the outside of the first air outlet pipe 16. However, the service life of this structure is short, and if it is not tightly tied, it is prone to loosening, resulting in an unsatisfactory shock-absorbing and noise-reducing effect. Therefore, in this embodiment, a fixing device is provided, which can stably fix the first air outlet pipe 16 on the steam engine and can monitor the vibration condition of the first air outlet pipe 16 at any time; an elastic layer is provided on the surface of the fixing ring 29 in contact with the first air outlet pipe 16. The fixing ring 29 is used to tie the first air outlet pipe 16 tightly, and the fixing ring 29 is fixedly connected to the steam engine; initially, the first ventilation hole, the second ventilation hole, and the air-filled bag 31 are all filled with sufficient gas, and the vibration control valve 30 is in a closed state, that is, a closed inner cavity is formed between the first ventilation hole, the second ventilation hole, and the air-filled bag 31. A plurality of air-filled bags 31 are in contact with the outer wall of the first air outlet pipe 16. When the first air outlet pipe 16 vibrates, the air-filled bag 31 is used to dampen the vibration to achieve the purpose of shock absorption and noise reduction, and the vibration detector monitors the vibration condition of the fixing device at any time, that is, the magnitude of the vibration effect transmitted from the first air outlet pipe 16 to the fixing device. If the vibration frequency detected by the vibration detector is greater than the preset value, it is considered that the gas in the air-filled bag 31 is depleted and the shock-absorbing effect of the air-filled bag 31 is reduced. Then, the electromagnet 308 is controlled to be energized and adsorb the permanent magnet, and the sealing plug 304 moves to connect the first communication hole 302 and the second communication hole 303. Then, the fixing ring 29 is connected to the second air outlet pipe 21 through the vibration control valve 30. At this time, a part of the exhaust gas discharged from the second air outlet pipe 21 can be filled into the second communication hole 303 and then filled into the fixing ring 29 and the fixing rod 28 through the first communication hole 302, thereby supplementing the gas volume in the air-filled bag 31 and increasing the elastic contact force between the air-filled bag 31 and the second air outlet pipe 21; when the vibration frequency detected by the vibration detector is less than the preset value, the electromagnet 308 is not energized, and the sealing plug 304 keeps the second communication hole 303 sealed, and it is considered that the air-filled bag 31 can effectively dampen the vibration and reduce the noise of the second air outlet pipe 21; through the above design, considering that the gas in the air-filled bag 31 will be lost after long-term use, resulting in a reduction in the shock-absorbing effect, therefore, the vibration control valve 30 is provided to effectively monitor the vibration of the second air outlet pipe 21 and supplement gas to the air-filled bag 31 at any time, and the supplemented gas can utilize the exhaust gas discharged from the second air outlet pipe 21, so that the exhaust gas is utilized, further achieving the purpose of energy conservation.

[0083] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present invention.

[0084] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0085] Although the embodiments of the present invention have been disclosed as above, it is not limited to only the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the examples shown and described herein.

Claims

1. A steam engine, characterized in that, comprising: a fuel supply device, a flameless combustion device, a first heat exchanger (1) and a second heat exchanger (2) connected in sequence. The fuel supply device is used to supply fuel into the flameless combustion device. The flameless combustion device is used to supply fuel for reaction to generate heat to form high-temperature gas, and blow the high-temperature gas to the first heat exchanger (1) and the second heat exchanger (2). The first heat exchanger (1) uses the high-temperature gas to convert the water provided by the water tank (3) into steam and discharge it. The second heat exchanger (2) uses the water provided in the water tank (3) to cool the remaining high-temperature gas and discharge it; a first water outlet pipe (11) is provided at the water outlet end of the water tank (3). The first water outlet pipe (11) is selectively communicated with the water inlet end of the first heat exchanger (1) through a first connecting pipe (12). And the first connecting pipe (12) provides atomized water to the first heat exchanger (1) through a nozzle provided at its end. The first water outlet pipe (11) is selectively communicated with the water inlet end of the second heat exchanger (2) through a second connecting pipe (13). The water outlet end of the second heat exchanger (2) is selectively communicated with the water tank (3) through a third connecting pipe (14). A radiator (15) is provided on the third connecting pipe (14); the nozzle includes: a spray head (26). The spray head (26) is connected to the first water outlet pipe (11). A first conical hole (261) is provided at one end of the interior of the spray head (26) close to the first water outlet pipe (11). A second conical hole (262) is provided at the end of the first conical hole (261) away from the first water outlet pipe (11). The taper of the second conical hole (262) is greater than the taper of the first conical hole (261). A plurality of first air inlet holes (263) arranged in a spiral shape are provided on the inner wall of the first conical hole (261). A plurality of second air inlet holes (264) arranged obliquely are provided on the inner wall of the second conical hole (262); an air inlet sleeve (27) is sleeved outside the spray head (26). A first annular hole (271) communicated with the first air inlet hole (263) and a second annular hole (272) communicated with the second air inlet hole (264) are provided on the inner side wall of the air inlet sleeve (27). A third air inlet hole (273) communicated with the first annular hole (271) and a fourth air inlet hole (274) communicated with the second annular hole (272) are further provided on the air inlet sleeve (27). The third air inlet hole (273) is selectively communicated with the air supply part. The fourth air inlet hole (274) is communicated with the high-temperature gas introduced into the first heat exchanger (1); 2. The steam engine according to claim 1, characterized in that, The flameless combustion device includes: a flameless combustion reaction chamber (4) and a blower (10). A heater (5) and a flameless combustion reactor (6) are provided inside the flameless combustion reaction chamber (4). The blower (10) is used to supply high-pressure air flow into the flameless combustion reaction chamber (4). The heater (5) is used to heat the catalyst in the flameless combustion reactor (6), and the catalyst is used to react with fuel to generate heat.

3. The steam engine according to claim 2, characterized in that a first temperature sensor (7) and a second temperature sensor (8) are provided inside the flameless combustion reaction chamber (4), and a third temperature sensor (9) is provided at the air outlet end of the flameless combustion reaction chamber (4); the first temperature sensor (7) is used to detect the temperature of the heater (5). When the temperature of the heater (5) reaches 60 degrees Celsius, the fuel supply device is controlled to supply fuel into the flameless combustion reaction chamber (4); the second temperature sensor (8) is used to detect the temperature inside the flameless combustion reaction chamber (4); the third temperature sensor (9) is used to detect the temperature at the air outlet end of the flameless combustion reaction chamber (4).

4. The steam engine according to claim 3, characterized in that a first air outlet pipe (16) for discharging water vapor is provided on the first heat exchanger (1). A fourth temperature sensor (17) is provided inside the first air outlet pipe (16). A fifth temperature sensor (18) is provided inside the first heat exchanger (1). When the temperature inside the first air outlet pipe (16) detected by the fourth temperature sensor (17) and the temperature inside the first heat exchanger (1) detected by the fifth temperature sensor (18) are both greater than 105 degrees Celsius, the water tank (3) is controlled to supply water into the first heat exchanger (1) and the second heat exchanger (2).

5. The steam engine according to claim 4, characterized in that a pressure sensor (19) is provided on the first air outlet pipe (16). A sixth temperature sensor (20) is provided at a position close to the second heat exchanger (2) on the third connecting pipe (14). A second air outlet pipe (21) is provided on the second heat exchanger (2). A seventh temperature sensor (22) for detecting the temperature of the exhausted waste gas is provided on the second air outlet pipe (21); when the temperature of the third connecting pipe (14) detected by the sixth temperature sensor (20) is greater than 70 degrees Celsius, or the pressure inside the first air outlet pipe (16) detected by the pressure sensor (19) is greater than 0.3 Mpa, the following operations are carried out simultaneously: the radiator (15) is turned on, the second temperature sensor (8) detects whether the first temperature inside the flameless combustion reaction chamber (4) exceeds a first temperature threshold, the third temperature sensor (9) detects whether the second temperature at the air outlet end of the flameless combustion reaction chamber (4) exceeds a second temperature threshold, if the first temperature exceeds the first temperature threshold, or the second temperature exceeds the second temperature threshold, then the fuel supply device is controlled to adjust the amount of fuel supplied into the flameless combustion reaction chamber (4), or the water injection amount of the nozzle is adjusted.

6. The steam engine according to claim 1, characterized in that the fuel supply device includes: a fuel tank (23) and a diaphragm pump (24), the diaphragm pump (24) is used to transport liquid fuel into the fuel tank (23), a power unit (25) and a liquid level sensor are provided in the fuel tank (23), the liquid fuel in the fuel tank (23) is transported into the flameless combustion device through the power unit (25), and the liquid level sensor is used to detect the remaining amount of the liquid fuel in the fuel tank (23).

7. The steam engine according to claim 5, characterized in that the first air outlet pipe (16) is fixed to the steam engine through a fixing device, the fixing device includes a plurality of fixing rods (28) and a plurality of fixing rings (29), the fixing rings (29) are sleeved on the outer side of the first air outlet pipe (16), the fixing rods (28) are distributed along the circumferential direction of the first air outlet pipe (16), the fixing rods (28) are fixedly connected to the fixing rings (29), a first ventilation hole is provided inside the fixing rods (28), a second ventilation hole communicated with the first ventilation hole is provided inside the fixing rings (29), a plurality of air charging bags (31) are provided on one side of the fixing rods (28) in contact with the outer surface of the first air outlet pipe (16), and the air charging bags (31) are communicated with the first ventilation hole and the second ventilation hole; at least one of the fixing rings (29) is provided with a vibration control valve (30), and the fixing ring (29) is selectively communicated with the second air outlet pipe (21) through the vibration control valve (30).

8. The steam engine according to claim 7, characterized in that the vibration control valve (30) includes: a valve body (301), a first communication hole (302) communicated with the second ventilation hole of the fixing ring (29) is provided inside the valve body (301), a second communication hole (303) communicated with the second air outlet pipe (21) is provided on one side of the valve body (301), a sealing plug body (304) for blocking the second communication hole (303) is provided inside the first communication hole (302), a connecting rod (305) is provided at one end of the sealing plug body (304), a permanent magnet (306) is provided at the end of the connecting rod (305) away from the sealing plug body (304), and an electromagnet (308) is connected to the end of the permanent magnet (306) away from the connecting rod (305) through a spring (307), and the electromagnet (308) is fixedly arranged inside the first communication hole (302); a vibration detector electrically connected to the electromagnet (308) is provided on the valve body (301).

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