Pulsating combustion superheated steam generator

Abstract

The present invention is a pulsating combustion superheated steam generating device, comprising at least one pulsating burner, the pulsating burner is connected to a flue gas disturbance cavity, the flue gas disturbance cavity is used for heat exchange and noise reduction of the high-temperature and high-pressure flue gas generated by the pulsating burner, a heat exchanger is arranged in the flue gas disturbance cavity, a steam channel is arranged in the heat exchanger, the high-temperature and high-pressure flue gas can exchange heat with the low-temperature steam in the steam channel to generate superheated steam under the action of flow and vibration coupling, a chimney is arranged on the flue gas disturbance cavity, the chimney is used to discharge part of the flue gas after heat exchange; the flue gas disturbance cavity is also connected to a flue gas circulation part, the flue gas circulation part is used to circulate part of the flue gas after heat exchange to the pulsating burner. The present invention utilizes the characteristics of generating negative pressure pulse waves during the operation of the pulsating burner, and can form a combustion cycle according to its own thermoacoustic effect, replacing the current situation that the traditional superheated steam generating device needs to be equipped with auxiliary machines such as fans, reducing equipment investment and reducing the subsequent maintenance costs.

Description

Technical Field

[0001] The invention relates to the technical field of steam generation, and in particular to a pulsating combustion superheated steam generating device. Background Art

[0002] Pulsating combustion refers to a special unstable combustion process in which the state parameters characterizing the combustion process in the combustion zone, such as temperature, pressure, air velocity, and heat release rate, fluctuate periodically over time under certain acoustic conditions. As a combustion method different from conventional steady-state combustion, pulsating combustion has the advantages of high combustion efficiency and combustion intensity, high heat transfer efficiency, and low pollutant emissions. It can not only improve energy utilization, save energy, and reduce industrial production and operation costs, but also reduce pollutant emissions and protect the environment.

[0003] The smoke and air system of a traditional steam heating furnace includes components such as a mixing fan or a combustion-supporting fan. When the production environment is harsh, the wear of the fan is aggravated, resulting in high maintenance costs for the fan and affecting production.

[0004] The pulsating burner uses the local negative pressure generated by pulsating combustion to draw new air into the combustion chamber, eliminating the need for additional power components such as fans, which not only reduces equipment investment but also reduces subsequent maintenance costs. Using gas combustion as fuel can replace the steam heating device currently used in steel mills.

[0005] There is a pulsating combustion steam generating device (CN206572488U) in the prior art. This technology provides a pulsating combustion steam generating device that prevents water and steam from spraying out from the steam outlet and ensures the outlet pressure of water vapor. It has a simple structure, small size, light weight, high thermal efficiency, and low environmental pollution. It includes a cylinder with water inside, a pulsating burner for heating water to generate steam, and a steam drum assembly; the steam drum assembly includes a steam drum cylinder, and upper and lower filter screens located inside the steam drum cylinder; the lower part of the steam drum cylinder is connected to the cylinder, and the top of the steam drum cylinder has a steam outlet. This technology combines the pulsating burner with the steam drum, and heats the water in the steam drum through the heat generated by the pulsating combustion, thereby generating steam. However, the device can only generate saturated steam and cannot produce superheated steam; the power of the single unit of the device is relatively small, and it cannot meet the large output demand of steam heaters in industry.

[0006] There is also a multi-combustion parallel heating high-power pulsating combustion steam boiler (CN101799154A) in the prior art, which discloses a multi-burner parallel heating high-power pulsating combustion steam boiler, belonging to the field of advanced energy technology. This technology uses a multi-group pulsating burner linkage mode to heat the steam boiler, that is, multiple pulsating burners are immersed in the boiler shell in parallel; the safe ignition and control of the parallel pulsating burners are set by the electronic control system program to achieve independent ignition, flameout protection and restart of each of the multiple parallel pulsating burners, so as to achieve a safe automatic control function; a pipe network is added to the decoupling room as a waste heat recovery device to make full use of heat and improve the thermal efficiency of the steam boiler. This technology realizes the design of a high-power steam boiler under the premise of ensuring the stable operation of pulsating combustion; the automatic control program of the safe ignition-flameout protection-start of the burner group ensures the safety and reliability of the pulsating burner ignition; the waste heat recovery device reduces the exhaust gas temperature to 180°C, reducing heat loss. However, this technology can only produce saturated steam, and cannot produce superheated steam.

[0007] Therefore, the inventor, relying on many years of experience and practice in related industries, proposes a pulsating combustion superheated steam generating device to overcome the defects of the prior art. Summary of the invention

[0008] The purpose of the present invention is to provide a pulsating combustion superheated steam generating device, which utilizes the negative pressure pulse wave generated during the operation of the pulsating burner and can form a combustion cycle according to its own thermoacoustic effect, replacing the current situation where traditional superheated steam generating devices need to be equipped with auxiliary machines such as fans, thereby reducing equipment investment and lowering subsequent maintenance costs.

[0009] The object of the present invention is achieved in this way. A pulsating combustion superheated steam generating device comprises at least one pulsating burner, wherein the pulsating burner can mix combustion gas and air to generate high-temperature and high-pressure flue gas and can generate negative pressure pulses to absorb gas and air, the pulsating burner is connected to a flue gas disturbance cavity, the flue gas disturbance cavity is used for heat exchange and noise reduction of the high-temperature and high-pressure flue gas generated by the pulsating burner, a heat exchanger is arranged in the flue gas disturbance cavity, a steam channel for steam circulation is arranged in the heat exchanger, the high-temperature and high-pressure flue gas can exchange heat with the low-temperature steam in the steam channel under the coupling of flow and vibration to generate superheated steam, a chimney is arranged on the flue gas disturbance cavity, the chimney is used to discharge part of the flue gas after heat exchange; the flue gas disturbance cavity is also connected to a flue gas circulation part, the flue gas circulation part is used to circulate part of the flue gas after heat exchange to the pulsating burner; the pulsating combustion superheated steam generating device also comprises a control part, the pulsating burner, the flue gas disturbance cavity and the flue gas circulation part are all electrically connected to the control part.

[0010] In a preferred embodiment of the present invention, an explosion relief valve is provided on the smoke disturbance chamber, and the explosion relief valve can automatically open to relieve pressure when there is overpressure in the smoke disturbance chamber and can fall back and reset after the pressure is relieved.

[0011] In a preferred embodiment of the present invention, a gas regulating device is connected to the pulsating burner, and the gas regulating device is used to ensure that the gas pressure is greater than the atmospheric pressure so that the gas can be sucked into the pulsating burner.

[0012] In a preferred embodiment of the present invention, the pulsating burner includes a mixing chamber, a combustion chamber and a nozzle connected in sequence, the mixing chamber is used to mix fuel gas and air to form a mixed gas, the combustion chamber is used to burn the mixed gas to produce high-temperature and high-pressure flue gas, the nozzle connects the combustion chamber and the flue gas disturbance cavity, and the nozzle can input the high-temperature and high-pressure flue gas generated by the combustion chamber into the flue gas disturbance cavity and form a negative pressure environment in the combustion chamber.

[0013] In a preferred embodiment of the present invention, the flue gas circulation unit includes a flue gas pipe and a first one-way valve structure, the two ends of the flue gas pipe are respectively connected to the flue gas disturbance cavity and the combustion chamber, the first one-way valve structure controls the amount of flue gas refluxed from the flue gas disturbance cavity by adjusting the opening pressure, and the first one-way valve structure is electrically connected to the control unit.

[0014] In a preferred embodiment of the present invention, a second one-way valve structure is provided on the air mixing chamber, and the second one-way valve structure can be closed and opened under the action of negative pressure to inhale air.

[0015] In a preferred embodiment of the present invention, the gas mixing chamber is connected to the gas regulating device; an ignition needle is arranged between the gas mixing chamber and the combustion chamber, and the ignition needle is electrically connected to the control unit.

[0016] In a preferred embodiment of the present invention, the combustion chamber is connected to a fire detection probe, and the fire detection probe is electrically connected to the control unit.

[0017] In a preferred embodiment of the present invention, the inlet of the flue gas disturbance chamber is sleeved on the outlet of the pulsating burner, and the connection between the outlet of the pulsating burner and the flue gas disturbance chamber is purged with high-pressure nitrogen to form a gas seal.

[0018] In a preferred embodiment of the present invention, a heat-insulating layer is arranged on the outer side of the pulsating combustion superheated steam generating device, and a sound-insulating layer is arranged on the inner wall of the smoke disturbance cavity.

[0019] As described above, the pulsating combustion superheated steam generating device provided by the present invention has the following beneficial effects:

[0020] The present invention utilizes the negative pressure pulse waves generated during the operation of the pulsating burner to inhale new air and fuel gas, and can form the characteristics of a combustion cycle according to its own thermoacoustic effect, thereby replacing the current situation where a traditional superheated steam generating device needs to be equipped with auxiliary machines such as a fan, thereby reducing equipment investment and subsequent maintenance costs;

[0021] The pulsating burner used in the present invention has high combustion intensity, generates low content of sulfide and nitrogen oxide, and reduces the investment in flue gas purification equipment;

[0022] The pulsating combustion superheated steam generating device of the present invention is convenient for later expansion, and only requires adding a pulsating burner to the outer wall of the smoke disturbance cavity, without making major changes to the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The following drawings are intended only to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0024] Figure 1 : is a schematic diagram of the pulsating combustion superheated steam generating device of the present invention.

[0025] Figure 2 : is a schematic diagram of the pulsating burner of the present invention.

[0026] In the figure:

[0027] 100. Pulsating combustion superheated steam generating device;

[0028] 1. Pulsation burner; 11. Mixing chamber; 12. Combustion chamber; 13. Nozzle; 14. Second check valve structure; 15. Ignition needle; 16. Ignition detection probe;

[0029] 2. Smoke disturbance chamber; 21. Chimney; 22. Explosion relief valve;

[0030] 3. Heat exchanger;

[0031] 4. Smoke circulation unit; 41. Smoke pipe; 42. First one-way valve structure;

[0032] 5. Gas regulating device. DETAILED DESCRIPTION

[0033] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described with reference to the accompanying drawings.

[0034] The specific embodiments of the present invention described herein are only used to explain the purpose of the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, technicians can conceive of any possible variations based on the present invention, which should be considered to belong to the scope of the present invention. It should be noted that when an element is referred to as "arranged on" another element, it can be directly on the other element or there can also be a central element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a central element at the same time. The terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation method.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0036] like Figure 1 , Figure 2 As shown, the present invention provides a pulsating combustion superheated steam generating device 100, comprising at least one pulsating burner 1, the pulsating burner 1 can mix and burn gas and air to generate high-temperature and high-pressure flue gas (such as a flue gas temperature of 1000-1200°C and a pressure of 600Pa) and can generate negative pressure pulses to absorb the gas and air, the pulsating burner 1 is connected to a flue gas disturbance cavity 2, the flue gas disturbance cavity 2 is used for heat exchange and noise reduction of the high-temperature and high-pressure flue gas generated by the pulsating burner 1, a heat exchanger 3 is arranged in the flue gas disturbance cavity 2, and a heat exchanger 3 is arranged in the heat exchanger 3 for In the steam passage through which steam flows, high-temperature and high-pressure flue gas can exchange heat with low-temperature steam in the steam passage under the coupling of flow and vibration to generate superheated steam. A chimney 21 is arranged on the flue gas disturbance chamber 2, and the chimney 21 is used to discharge part of the flue gas after heat exchange; the flue gas disturbance chamber 2 is also connected to a flue gas circulation part 4, and the flue gas circulation part 4 is used to circulate part of the flue gas after heat exchange to the pulsating burner 1; the pulsating combustion superheated steam generating device 100 also includes a control part, and the pulsating burner 1, the flue gas disturbance chamber 2 and the flue gas circulation part 4 are all electrically connected to the control part.

[0037] At least one pulsating burner 1 is connected to the flue gas disturbance chamber 2, and the heat exchanger 3 is placed in the flue gas disturbance chamber 2. The high-temperature and high-pressure flue gas acts on the outer surface of the heat exchanger through flow and vibration coupling, and transfers heat to the heat exchanger 3. Part of the flue gas (low-temperature flue gas) formed after the heat exchange can be discharged from the chimney 21, and part of the flue gas returns to the pulsating burner 1 through the flue gas circulation part 4. The low-temperature flue gas is mixed with the high-temperature flue gas in the pulsating burner 1 to maintain a suitable flue gas temperature; wet steam (low temperature) with water enters from the inlet of the heat exchanger, absorbs the sensible heat of the high-temperature and high-pressure flue gas in the heat exchanger, becomes superheated steam, and is discharged from the outlet of the heat exchanger.

[0038] One or more pulsating burners 1 are arranged according to the capacity of the pulsating combustion superheated steam generating device 100. When the steam output of the pulsating combustion superheated steam generating device 100 needs to be adjusted, the burner fuel regulating valve connected to the pulsating burner 1 is adjusted to meet different heating load requirements. The fuel (such as liquefied petroleum gas, natural gas, coal gas, heavy oil, etc.) is atomized, burned, vibrated, diffused, etc. by the pulsating burner 1, and high-temperature flue gas is generated and enters the flue gas disturbance cavity 2.

[0039] The present invention utilizes the negative pressure pulse waves generated during the operation of the pulsating burner to inhale new air and fuel gas, and can form the characteristics of a combustion cycle according to its own thermoacoustic effect (thermoacoustic effect refers to the time-averaged energy effect generated between a solid medium and an oscillating fluid, generating a time-averaged heat flow and a time-averaged power flow along or against the direction of sound propagation. According to the different directions of energy conversion, thermoacoustic effect is divided into two categories: one is to use thermal energy to generate acoustic energy, including various thermoacoustic engines; the other is to use acoustic energy to transport thermal energy, including various regenerative refrigerators. The fluid medium that can generate thermoacoustic effect must have compressibility, a large thermal expansion coefficient, a small Prandtl number, and for occasions requiring a large temperature difference and a small energy flow density, the fluid specific heat must be small, and for occasions requiring a small temperature difference and a large energy flow density, the fluid specific heat must be large) to replace the current situation where a traditional superheated steam generating device needs to be equipped with auxiliary machines such as a fan, thereby reducing equipment investment and reducing subsequent maintenance costs;

[0040] The pulsating burner used in the present invention has high combustion intensity, generates low content of sulfide and nitrogen oxide, and reduces the investment in flue gas purification equipment;

[0041] The pulsating combustion superheated steam generating device of the present invention is convenient for later expansion, and only requires adding a pulsating burner to the outer wall of the smoke disturbance cavity, without making major changes to the equipment.

[0042] Further, if Figure 1As shown, the smoke disturbance chamber 2 is provided with an explosion relief valve 22, which can automatically open to relieve pressure when the smoke disturbance chamber 2 is over-pressured, and can fall back and reset after the pressure relief. When the unburned smoke forms a deflagration in the smoke disturbance chamber 2, the chamber is over-pressured, and the valve flap of the explosion relief valve 22 automatically opens to relieve pressure, and then falls back and resets. The explosion relief valve 22 can protect the smoke disturbance chamber 2 and the pulsation burner 1.

[0043] Further, if Figure 2 As shown, the pulsating burner 1 is connected with a gas regulating device 5, which is used to ensure that the gas pressure is greater than the atmospheric pressure (slightly greater) so that the gas can be sucked into the pulsating burner 1 (the gas can be sucked under a slightly vacuum pressure).

[0044] Further, if Figure 1 , Figure 2 As shown, the pulsating burner 1 includes a mixing chamber 11, a combustion chamber 12 and a nozzle 13 which are connected in sequence. The mixing chamber 11 is used to mix the fuel gas and air to form a mixed gas. The combustion chamber 12 is used to burn the mixed gas to generate high-temperature and high-pressure flue gas. The nozzle 13 connects the combustion chamber and the flue gas disturbance cavity. The nozzle 13 can input the high-temperature and high-pressure flue gas generated by the combustion chamber into the flue gas disturbance cavity 2 and form a negative pressure environment in the combustion chamber 12.

[0045] Further, if Figure 1 , Figure 2 As shown, the flue gas circulation unit 4 includes a flue gas pipe 41 and a first one-way valve structure 42. The two ends of the flue gas pipe 41 are respectively connected to the flue gas disturbance chamber 2 and the combustion chamber 12. The first one-way valve structure 42 controls the amount of flue gas refluxed from the flue gas disturbance chamber by adjusting the opening pressure. The first one-way valve structure 42 is electrically connected to the control unit. The first one-way valve structure 42 adopts a valve screen structure.

[0046] Part of the smoke in the smoke disturbance cavity 2 can flow back to the combustion chamber 12 through the smoke pipe 41, and the opening pressure of the first one-way valve structure 42 is controlled by adjusting the position of the steel sheet on the first one-way valve structure 42. When the temperature of the smoke disturbance cavity 2 is low, the opening pressure of the first one-way valve structure 42 is reduced, so that the smoke in the smoke disturbance cavity 2 can flow back to the combustion chamber 12 quickly, thereby increasing the smoke temperature. When the temperature of the smoke disturbance cavity 2 is high, the opening pressure of the first one-way valve structure 42 is increased, so that a small amount of smoke in the smoke disturbance cavity 2 can flow back to the combustion chamber 12, thereby reducing the smoke temperature.

[0047] Further, if Figure 1 , Figure 2 As shown, a second one-way valve structure 14 is provided on the gas mixing chamber 11. The second one-way valve structure 14 can be closed and opened under negative pressure to inhale air. The second one-way valve structure 14 adopts a valve screen structure.

[0048] After the gas and air are mixed in the mixing chamber 11, they enter the combustion chamber 12. The mixed gas is ignited by the residual flame from the previous combustion cycle, forming a deflagration. The high-temperature and high-pressure flue gas generated rushes into the nozzle 13. Due to the inertia of the gas, a vacuum is generated in the combustion chamber 12, and the second one-way valve structure opens to inhale fresh air and gas, and then complete a combustion cycle.

[0049] Further, if Figure 2 As shown, the gas mixing chamber 11 is connected to the gas regulating device 5 ; an ignition needle 15 is arranged between the gas mixing chamber 11 and the combustion chamber 12 , and the ignition needle 15 is electrically connected to the control unit. The ignition needle 15 is used for the first ignition in the combustion chamber 12 .

[0050] Further, if Figure 2 As shown, the combustion chamber 12 is connected to a fire detection probe 16, which is electrically connected to the control unit. The fire detection probe 16 detects the combustion condition of the combustion chamber to ensure the stability of the combustion.

[0051] In this embodiment, the pulsating burner 1 is of Helmholtz type, and the first one-way valve structure 42 adopts a valve screen structure. The first one-way valve structure 42 is placed on the rear side of the combustion chamber, and is combined with the ignition needle 15, the ignition detection probe 16 and other structures. The control unit controls the process of burner purging, ignition, and combustion detection.

[0052] Furthermore, the inlet of the flue gas disturbance chamber 2 is sleeved on the outlet of the pulsation burner 1 (the joint is filled with a solid object), and the connection between the outlet of the pulsation burner and the flue gas disturbance chamber is purged with high-pressure nitrogen to form a gas seal.

[0053] Furthermore, a thermal insulation layer is arranged on the outer side of the pulsating combustion superheated steam generating device 100 (pulsating burner 1, flue gas disturbance cavity 2 and flue gas circulation part 4); a sound insulation layer is arranged on the inner wall of the flue gas disturbance cavity 2, and the flue gas disturbance cavity 2 can play a role in reducing the noise generated by deflagration.

[0054] The working process of the pulsating combustion superheated steam generating device 100 of the present invention is as follows:

[0055] After the gas is adjusted to low-pressure gas by the gas regulating device 5, it is introduced into the mixing chamber 11 of the pulsating burner 1. The mixing chamber 11 mixes the gas and air to form a mixed gas, which flows to the combustion chamber 12. The ignition needle 15 generates an electric spark to ignite the mixed gas in the combustion chamber 12. The high-temperature and high-pressure smoke generated by the explosion is ejected from the nozzle 13. Due to the inertia of the fluid, a negative pressure is formed inside the combustion chamber 12. The second one-way valve structure 14 opens to inhale fresh air. When the volume of the inhaled air reaches the gas explosion limit again, the mixed gas (gas mixture) burns again, thereby generating a power cycle to ensure continuous combustion. The amount of smoke flowing back is controlled by adjusting the opening pressure of the first one-way valve structure 42.

[0056] High-temperature and high-pressure flue gas is sprayed into the flue gas disturbance cavity 2 through the nozzle 13. After entering the flue gas disturbance cavity 2, the high-temperature and high-pressure flue gas is heated by steam and then silenced and discharged. Part of the flue gas flows back to the combustion chamber 12 through the flue gas circulation part 4 to maintain the temperature of the pulsating burner 1. When the unburned flue gas forms an explosion in the flue gas disturbance cavity 2, the cavity is over-pressurized, and the valve flap automatically opens to release the pressure, and then the valve flap falls back and resets.

[0057] As described above, the pulsating combustion superheated steam generating device provided by the present invention has the following beneficial effects:

[0058] The present invention utilizes the negative pressure pulse waves generated during the operation of the pulsating burner to inhale new air and fuel gas, and can form the characteristics of a combustion cycle according to its own thermoacoustic effect, thereby replacing the current situation where a traditional superheated steam generating device needs to be equipped with auxiliary machines such as a fan, thereby reducing equipment investment and subsequent maintenance costs;

[0059] The pulsating burner used in the present invention has high combustion intensity, generates low content of sulfide and nitrogen oxide, and reduces the investment in flue gas purification equipment;

[0060] The pulsating combustion superheated steam generating device of the present invention is convenient for later expansion, and only requires adding a pulsating burner to the outer wall of the smoke disturbance cavity, without making major changes to the equipment.

[0061] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A pulsating combustion superheated steam generating device, characterized in that: The invention comprises at least one pulsating burner, which can mix and burn gas and air to generate high-temperature and high-pressure flue gas and can generate negative pressure pulses to absorb gas and air. The pulsating burner is connected to a flue gas disturbance cavity, which is used for heat exchange and noise reduction of the high-temperature and high-pressure flue gas generated by the pulsating burner. A heat exchanger is arranged in the flue gas disturbance cavity, and a steam channel for steam circulation is arranged in the heat exchanger. The high-temperature and high-pressure flue gas can exchange heat with the low-temperature steam in the steam channel under the coupling of flow and vibration to generate superheated steam. A chimney is arranged on the flue gas disturbance cavity, and the chimney is used to discharge part of the flue gas after heat exchange. The flue gas disturbance cavity is also connected to a flue gas circulation part, and the flue gas circulation part is used to circulate part of the flue gas after heat exchange to the pulsating burner. The pulsating combustion superheated steam generating device also comprises a control part, and the pulsating burner, the flue gas disturbance cavity and the flue gas circulation part are all electrically connected to the control part. The pulsating burner is connected to a gas regulating device, and the gas regulating device is used to ensure that the gas pressure is greater than the atmospheric pressure so that the gas can be sucked into the pulsating burner; The pulsation burner comprises a gas mixing chamber, a combustion chamber and a nozzle which are connected in sequence, wherein the gas mixing chamber is used to mix fuel gas and air to form a mixed gas, the combustion chamber is used to burn the mixed gas to generate high-temperature and high-pressure flue gas, the nozzle connects the combustion chamber and the flue gas disturbance cavity, and the nozzle can input the high-temperature and high-pressure flue gas generated by the combustion chamber into the flue gas disturbance cavity and form a negative pressure environment in the combustion chamber; The flue gas circulation unit includes a flue gas pipe and a first one-way valve structure, the two ends of the flue gas pipe are respectively connected to the flue gas disturbance cavity and the combustion chamber, the first one-way valve structure controls the amount of flue gas refluxed from the flue gas disturbance cavity by adjusting the opening pressure, and the first one-way valve structure is electrically connected to the control unit; A second one-way valve structure is arranged on the air mixing chamber, and the second one-way valve structure can be closed and opened under the action of negative pressure to inhale air.

2. The pulsating combustion superheated steam generating device according to claim 1, characterized in that: The smoke disturbance cavity is provided with an explosion relief valve, which can automatically open to relieve pressure when there is overpressure in the smoke disturbance cavity and can fall back and reset after the pressure is relieved.

3. The pulsating combustion superheated steam generating device according to claim 1, characterized in that: The gas mixing chamber is connected to the gas regulating device; an ignition needle is arranged between the gas mixing chamber and the combustion chamber, and the ignition needle is electrically connected to the control unit.

4. The pulsating combustion superheated steam generating device according to claim 1, characterized in that: The combustion chamber is connected to a fire detection probe, and the fire detection probe is electrically connected to the control unit.

5. The pulsating combustion superheated steam generating device according to claim 1, characterized in that: The inlet of the flue gas disturbance cavity is sleeved on the outlet of the pulsating burner, and the connection between the outlet of the pulsating burner and the flue gas disturbance cavity is purged with high-pressure nitrogen to form a gas seal.

6. The pulsating combustion superheated steam generating device according to claim 1, characterized in that: A heat-insulating layer is arranged on the outer side of the pulsating combustion superheated steam generating device, and a sound-insulating layer is arranged on the inner wall of the smoke disturbance cavity.

Images