CN216079751U - Pulse combustion superheated steam generator - Google Patents
Pulse combustion superheated steam generator Download PDFInfo
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- CN216079751U CN216079751U CN202122688210.2U CN202122688210U CN216079751U CN 216079751 U CN216079751 U CN 216079751U CN 202122688210 U CN202122688210 U CN 202122688210U CN 216079751 U CN216079751 U CN 216079751U
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 104
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 125
- 239000003546 flue gas Substances 0.000 claims abstract description 124
- 230000009467 reduction Effects 0.000 claims abstract description 3
- 239000007789 gas Substances 0.000 claims description 65
- 238000002156 mixing Methods 0.000 claims description 23
- 238000004880 explosion Methods 0.000 claims description 11
- 239000000779 smoke Substances 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 10
- 239000000523 sample Substances 0.000 claims description 9
- 238000013022 venting Methods 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
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- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 6
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000004200 deflagration Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 3
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- 239000002737 fuel gas Substances 0.000 description 3
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- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
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- 239000002918 waste heat Substances 0.000 description 2
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Abstract
The utility model relates to a pulse combustion superheated steam generating device, which comprises at least one pulse combustor, wherein a flue gas disturbance cavity is communicated with the pulse combustor and used for heat exchange and noise reduction of high-temperature and high-pressure flue gas generated by the pulse combustor; the flue gas disturbance cavity is also communicated with a flue gas circulating part, and the flue gas circulating part is used for circulating part of the flue gas subjected to heat exchange to the pulse combustor. The utility model utilizes the characteristic that the pulse combustor generates negative pressure pulse waves in the working process and can form combustion circulation according to the self thermoacoustic effect, replaces the current situation that the traditional superheated steam generating device needs to be provided with auxiliary machines such as a fan and the like, reduces the equipment investment and reduces the later maintenance cost.
Description
Technical Field
The utility model relates to the technical field of steam generation, in particular to a pulse combustion superheated steam generating device.
Background
The pulse combustion is a special unstable combustion process in which state parameters representing the combustion process in a combustion zone, such as steady-state variables of temperature, pressure, air flow velocity, heat release rate and the like, periodically fluctuate along with time under certain acoustic conditions. The pulsating combustion is used as a combustion mode different from the conventional steady-state combustion, has the advantages of high combustion efficiency and combustion intensity, high heat transfer efficiency, small pollutant discharge amount and the like, can improve the utilization rate of energy, saves energy, reduces the operation cost of industrial production, can reduce pollutant discharge and protects the environment.
The traditional smoke and air system of the steam heating furnace comprises a mixing fan or a combustion fan and other components, when the production environment is severe, the abrasion of the fan is aggravated, the maintenance cost of the fan is high, and meanwhile, the production is influenced.
The pulse combustor uses the local negative pressure generated during pulse combustion to suck new air into the combustion chamber, and power parts such as a fan and the like are not required to be additionally used, so that the equipment investment is reduced, and the later maintenance cost is also reduced. The gas is used as fuel to replace the steam heating device used in the steel mill at present.
In the prior art, there is a pulse combustion steam generator (CN206572488U), which provides a pulse combustion steam generator that prevents water and steam from being ejected from a steam outlet, ensures the outlet pressure of the steam, and has a simple structure, a small volume, a light weight, a high thermal efficiency, and a small environmental pollution. The steam generator comprises a cylinder body with water inside, a pulse combustor for heating the water to generate steam, and a steam drum component; the steam drum component comprises a steam drum barrel body and an upper layer of filter screen and a lower layer of filter screen which are positioned in the steam drum barrel body; the lower part of the steam drum cylinder body is communicated with the cylinder body, and the top of the steam drum cylinder body is provided with a steam outlet. This technology combines a pulse combustor with a steam drum, and heats water in the steam drum by heat generated by pulse combustion, thereby generating steam. However, the device can only produce saturated steam and can not produce superheated steam; the single machine power of the device is small, and the large-output requirement of the steam heater in the industry cannot be met.
In the prior art, a multi-combustion parallel heating high-power pulse combustion steam boiler (CN101799154A) is also provided, and the technology discloses a multi-combustor parallel heating high-power pulse combustion steam boiler, belonging to the technical field of advanced energy. The technology adopts a linkage mode of a plurality of groups of pulse combustors to supply heat for a steam boiler, namely, the plurality of pulse combustors are immersed in a boiler shell in parallel; safe ignition and control of the pulse combustors connected in parallel are set by an electric control system program, so that independent ignition, flameout and protection restarting of each pulse combustor in the plurality of pulse combustors connected in parallel is realized, and a safe automatic control function is achieved; a pipe network is added in the decoupling chamber to be used as a waste heat recovery device, so that heat is fully utilized, and the heat efficiency of the steam boiler is improved. The technology realizes the design of a high-power steam boiler on the premise of ensuring the stable operation of the pulsating combustion; the safety ignition, flameout protection and starting automatic control program of the burner group ensures the safety and reliability of the ignition of the pulsating burner; the waste heat recovery device reduces the exhaust gas temperature to 180 ℃, and reduces heat loss. However, this technique can only produce saturated steam, and cannot produce superheated steam.
Therefore, the inventor provides a pulse combustion superheated steam generating device by virtue of experience and practice of related industries for many years so as to overcome the defects in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a pulse combustion superheated steam generating device, which utilizes the characteristics that a pulse combustor generates negative pressure pulse waves in the working process and can form combustion circulation according to the thermoacoustic effect of the pulse combustor, replaces the current situation that auxiliary machines such as a fan and the like are required to be arranged in the traditional superheated steam generating device, reduces equipment investment and reduces later maintenance cost.
The utility model aims to realize the purpose, and the pulse combustion superheated steam generating device comprises at least one pulse combustor, wherein the pulse combustor can mix and combust gas and air to generate high-temperature and high-pressure flue gas and can generate negative pressure pulse to absorb the gas and the air, a flue gas disturbance cavity is communicated with the pulse combustor and is used for heat exchange and noise reduction of the high-temperature and high-pressure flue gas generated by the pulse combustor, 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 low-temperature steam in the steam channel under the action of flow and vibration coupling to generate superheated steam, a chimney is arranged on the flue gas disturbance cavity and is used for discharging part of the flue gas after heat exchange; the flue gas disturbance cavity is also communicated with a flue gas circulating part, and the flue gas circulating part is used for circulating part of the flue gas subjected to heat exchange to the pulse combustor; the pulse combustion superheated steam generating device further comprises a control part, and the pulse combustor, the smoke disturbance cavity and the smoke circulating part are electrically connected with the control part.
In a preferred embodiment of the present invention, an explosion venting valve is disposed on the flue gas disturbance cavity, and the explosion venting valve can automatically open for pressure relief when the flue gas disturbance cavity is in overpressure, and can fall back and reset after pressure relief.
In a preferred embodiment of the present invention, a gas regulator is connected to the pulse combustor, and the gas regulator is configured to ensure that a gas pressure is greater than an atmospheric pressure so that gas can be sucked into the pulse combustor.
In a preferred embodiment of the present invention, the pulse combustor includes a gas mixing chamber, a combustion chamber and a nozzle, which are sequentially connected, the gas mixing chamber is used for mixing gas and air to form a mixed gas, the combustion chamber is used for combusting the mixed gas to generate high-temperature and high-pressure flue gas, the nozzle is connected to 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 enable the combustion chamber to form a negative pressure environment.
In a preferred embodiment of the present invention, the flue gas circulation portion includes a flue gas pipe and a first check valve structure, two ends of the flue gas pipe are respectively communicated with the flue gas disturbance cavity and the combustion chamber, the first check valve structure controls the amount of flue gas flowing back from the flue gas disturbance cavity by adjusting the opening pressure, and the first check valve structure is electrically connected to the control portion.
In a preferred embodiment of the present invention, a second one-way valve structure is disposed on the air mixing chamber, and the second one-way valve structure can be closed and can be opened under the negative pressure to suck air.
In a preferred embodiment of the present invention, the gas mixing chamber is communicated with 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 with the control part.
In a preferred embodiment of the present invention, an ignition detection probe is connected to the combustion chamber, and the ignition detection probe is electrically connected to the control unit.
In a preferred embodiment of the present invention, an inlet of the flue gas disturbance cavity is sleeved to an outlet of the pulse combustor, and a joint between the outlet of the pulse combustor and the flue gas disturbance cavity is purged with high-pressure nitrogen to form a gas seal.
In a preferred embodiment of the present invention, an insulating layer is disposed on an outer side of the pulse combustion superheated steam generator, and a sound insulation layer is disposed on an inner wall of the flue gas disturbance cavity.
From the above, the pulse combustion superheated steam generating device provided by the utility model has the following beneficial effects:
the utility model uses the negative pressure pulse wave generated in the working process of the pulse combustor to suck in new air and fuel gas, and can form the characteristic of combustion cycle according to the self thermoacoustic effect, replaces the current situation that the traditional superheated steam generating device needs to be provided with auxiliary machines such as a fan and the like, reduces the equipment investment, and simultaneously reduces the later maintenance cost;
the pulse combustor adopted by the utility model has high combustion intensity, the content of generated sulfide and nitrogen oxide is low, and the investment of flue gas purification equipment is reduced;
the pulse combustion superheated steam generator is convenient to expand in the later period, only a pulse combustor needs to be added on the outer wall of the flue gas disturbance cavity, and equipment does not need to be changed in a large range.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:
FIG. 1: is a schematic diagram of the pulse combustion superheated steam generator of the present invention.
FIG. 2: is a schematic view of the pulse combustor of the present invention.
In the figure:
100. a pulse combustion superheated steam generator;
1. a pulsating burner; 11. a gas mixing chamber; 12. a combustion chamber; 13. a nozzle; 14. a second one-way valve structure; 15. an ignition needle; 16. a fire detection probe;
2. a flue gas disturbance cavity; 21. a chimney; 22. an explosion venting valve;
3. a heat exchanger;
4. a flue gas circulating part; 41. a flue gas pipe; 42. a first one-way valve structure;
5. a gas regulating device.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
The specific embodiments of the present invention described herein are for the purpose of illustration only and are not to be construed as limiting the utility model in any way. Any possible variations based on the present invention may be conceived by the skilled person in the light of the teachings of the present invention, and these should be considered to fall within the scope of the present invention. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, indirect connections through intermediaries, and the like. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 and 2, the utility model provides a pulse combustion superheated steam generating device 100, which comprises at least one pulse combustor 1, wherein the pulse combustor 1 can mix and combust gas and air to generate high-temperature and high-pressure flue gas (such as flue gas temperature of 1000-; the flue gas disturbance cavity 2 is also communicated with a flue gas circulating part 4, and the flue gas circulating part 4 is used for circulating part of the flue gas after heat exchange to the pulse combustor 1; the pulse combustion superheated steam generating device 100 further comprises a control part, and the pulse combustor 1, the flue gas disturbance cavity 2 and the flue gas circulating part 4 are electrically connected with the control part.
At least one pulse combustor 1 is connected to a flue gas disturbance cavity 2, a heat exchanger 3 is arranged in the flue gas disturbance cavity 2, high-temperature and high-pressure flue gas acts on the outer surface of the heat exchanger in a flowing and vibration coupling mode, heat is transmitted to the heat exchanger 3, part of flue gas (low-temperature flue gas) formed after heat exchange can be discharged from a chimney 21, part of flue gas returns to the pulse combustor 1 through a flue gas circulating part 4, and the low-temperature flue gas is mixed with high-temperature flue gas in the pulse combustor 1 to maintain proper flue gas temperature; wet steam (low temperature) with water enters from the inlet of the heat exchanger, absorbs sensible heat of high-temperature and high-pressure flue gas in the heat exchanger, is changed into superheated steam, and is discharged from the outlet of the heat exchanger.
One or more pulse combustors 1 are arranged according to the capacity of the pulse combustion superheated steam generating device 100, and when the steam output of the pulse combustion superheated steam generating device 100 needs to be adjusted, the burner fuel adjusting valve connected to the pulse combustor 1 is adjusted to adapt to different heating load requirements. The fuel (such as liquefied petroleum gas, natural gas, coal gas, heavy oil and the like) is atomized, combusted, vibrated, diffused and the like through the pulsating combustor 1, and high-temperature flue gas is generated and enters the flue gas disturbance cavity 2.
The utility model uses the negative pressure pulse wave generated in the working process of the pulse combustor to suck in new air and fuel gas, and can generate time-averaged heat flow and time-averaged power flow along or against the sound transmission direction according to the self thermoacoustic effect (the thermoacoustic effect refers to the time-averaged energy effect generated between a solid medium and an oscillating fluid, and the thermoacoustic effect is divided into two types according to the difference of energy conversion directions, wherein the thermoacoustic effect is divided into two types, namely, the thermoacoustic energy is used for generating sound energy and comprises various thermoacoustic engines, the thermoacoustic energy is used for transporting the heat energy and comprises various refrigerating machines, the fluid medium capable of generating the thermoacoustic effect must have compressibility, larger thermal expansion coefficient and smaller Plantt number of heat regeneration, and for the occasions requiring larger temperature difference and smaller energy flow density, the fluid specific heat is smaller, and for the occasions requiring smaller temperature difference and larger energy flow density, the fluid specific heat is larger) to form the characteristic of combustion cycle, the current situation that auxiliary machines such as a fan and the like need to be arranged in the traditional superheated steam generating device is replaced, the equipment investment is reduced, and meanwhile, the later maintenance cost is reduced;
the pulse combustor adopted by the utility model has high combustion intensity, the content of generated sulfide and nitrogen oxide is low, and the investment of flue gas purification equipment is reduced;
the pulse combustion superheated steam generator is convenient to expand in the later period, only a pulse combustor needs to be added on the outer wall of the flue gas disturbance cavity, and equipment does not need to be changed in a large range.
Further, as shown in fig. 1, an explosion venting valve 22 is arranged on the flue gas disturbance cavity 2, and the explosion venting valve 22 can be opened automatically to release pressure when the flue gas disturbance cavity 2 is in overpressure, and can fall back and reset after pressure release. When the unburned flue gas forms deflagration in the flue gas disturbance cavity 2, the overpressure in the cavity body, the valve clack of the explosion release valve 22 automatically opens to release the pressure, and then the valve clack falls back and resets. The explosion venting valve 22 can protect the flue gas disturbance cavity 2 and the pulse combustor 1.
Further, as shown in fig. 2, a gas regulator 5 is connected to the pulse combustor 1, and the gas regulator 5 is configured to ensure that the gas pressure is greater than (slightly greater than) the atmospheric pressure so that the gas can be sucked into the pulse combustor 1 (the gas can be sucked under the pressure of the micro vacuum).
Further, as shown in fig. 1 and 2, the pulse combustor 1 includes a gas mixing chamber 11, a combustion chamber 12 and a nozzle 13 which are sequentially communicated, the gas mixing chamber 11 is used for mixing gas and air to form a mixed gas, the combustion chamber 12 is used for combusting the mixed gas to generate high-temperature and high-pressure flue gas, the nozzle 13 is communicated with the combustion chamber and the flue gas disturbance cavity, and 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 enable the combustion chamber 12 to form a negative pressure environment.
Further, as shown in fig. 1 and fig. 2, the flue gas circulating portion 4 includes a flue gas pipe 41 and a first check valve structure 42, two ends of the flue gas pipe 41 are respectively communicated with the flue gas disturbance cavity 2 and the combustion chamber 12, the first check valve structure 42 controls the amount of flue gas flowing back from the flue gas disturbance cavity by adjusting the opening pressure, and the first check valve structure 42 is electrically connected with the control portion. The first check valve structure 42 adopts a valve screen structure.
Part of the smoke in the smoke disturbing 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 flue gas disturbance cavity 2 is lower, the opening pressure of the first check valve structure 42 is reduced, so that the flue gas in the flue gas disturbance cavity 2 can rapidly flow back to the combustion chamber 12, and the temperature of the flue gas is increased. When the temperature of the flue gas disturbance cavity 2 is high, the opening pressure of the first check valve structure 42 is increased, so that the flue gas in the flue gas disturbance cavity 2 can flow back to the combustion chamber 12 in a small amount, and the temperature of the flue gas is reduced.
Further, as shown in fig. 1 and fig. 2, a second one-way valve structure 14 is disposed on the air mixing chamber 11, and the second one-way valve structure 14 can be closed and can be opened under the negative pressure to suck air. The second check valve structure 14 adopts a valve screen structure.
The gas and the air are mixed in the gas mixing chamber 11 and then enter the combustion chamber 12, the mixed gas is ignited by the residual flame in the previous combustion cycle to form deflagration, the generated high-temperature and high-pressure flue gas rushes into the spray pipe 13, vacuum is generated in the combustion chamber 12 due to the inertia effect of the gas, the second one-way valve structure is opened, fresh air and gas are sucked, and then a combustion cycle is completed.
Further, as shown in fig. 2, the gas mixing chamber 11 is communicated with a gas adjusting device 5; an ignition needle 15 is arranged between the gas mixing chamber 11 and the combustion chamber 12, the ignition needle 15 is electrically connected with the control part, and the ignition needle 15 is used for first ignition in the combustion chamber 12.
Further, as shown in fig. 2, an ignition detection probe 16 is connected to the combustion chamber 12, the ignition detection probe 16 is electrically connected to the control unit, and the ignition detection probe 16 detects the combustion condition of the combustion chamber to ensure the stability of the combustion.
In the present embodiment, the pulsation burner 1 is of a Helmholtz type, the first check valve structure 42 is of a valve screen structure, the first check valve structure 42 is disposed behind the combustion chamber, and the flow of burner purging, ignition, and combustion detection is controlled by the control unit in conjunction with the ignition needle 15, the ignition detection probe 16, and other structures.
Further, the inlet of the flue gas disturbance cavity 2 is sleeved on the outlet of the pulse combustor 1 (the joint is filled with a material object), and the joint of the outlet of the pulse combustor and the flue gas disturbance cavity is blown by high-pressure nitrogen to form gas seal.
Further, an insulating layer is arranged on the outer side of the pulse combustion superheated steam generating device 100 (the pulse combustor 1, the flue gas disturbance cavity 2 and the flue gas circulating part 4); the inner wall of the flue gas disturbance cavity 2 is provided with a sound insulation layer, and the flue gas disturbance cavity 2 can play a role in reducing noise generated by deflagration.
The operation of the pulse combustion superheated steam generator 100 of the present invention is as follows:
the gas is adjusted to be low-pressure gas through the gas adjusting device 5 and then is introduced into the gas mixing chamber 11 of the pulse combustor 1, the mixed gas of the mixed gas chamber 11 and air forms mixed gas, the mixed gas flows to the combustion chamber 12, the ignition needle 15 generates electric sparks to ignite the mixed gas in the combustion chamber 12, high-temperature and high-pressure smoke generated by explosion is sprayed out from the spray pipe 13, negative pressure is formed inside the combustion chamber 12 due to the inertia effect of fluid, the second one-way valve structure 14 is opened, fresh air is sucked, when the volume of the sucked air reaches the gas explosion limit again, the mixed gas (gas mixture) is combusted again, work doing circulation is generated, and the continuous combustion is ensured. The amount of the returned flue gas is controlled by adjusting the opening pressure of the first check valve structure 42.
High-temperature and high-pressure flue gas is sprayed into the flue gas disturbance cavity 2 through the spray pipe 13, the high-temperature and high-pressure flue gas enters the flue gas disturbance cavity 2 to be silenced and discharged after being heated by steam, and part of the flue gas flows back to the combustion chamber 12 through the flue gas circulating part 4 to maintain the temperature of the pulse combustor 1. When the unburnt smoke forms deflagration in the smoke disturbance cavity 2, the overpressure in the cavity body, the valve clack automatically opens to release the pressure, and then the valve clack falls back and resets.
From the above, the pulse combustion superheated steam generating device provided by the utility model has the following beneficial effects:
the utility model uses the negative pressure pulse wave generated in the working process of the pulse combustor to suck in new air and fuel gas, and can form the characteristic of combustion cycle according to the self thermoacoustic effect, replaces the current situation that the traditional superheated steam generating device needs to be provided with auxiliary machines such as a fan and the like, reduces the equipment investment, and simultaneously reduces the later maintenance cost;
the pulse combustor adopted by the utility model has high combustion intensity, the content of generated sulfide and nitrogen oxide is low, and the investment of flue gas purification equipment is reduced;
the pulse combustion superheated steam generator is convenient to expand in the later period, only a pulse combustor needs to be added on the outer wall of the flue gas disturbance cavity, and equipment does not need to be changed in a large range.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the utility model should fall within the protection scope of the utility model.
Claims (10)
1. A pulse combustion superheated steam generating device is characterized by comprising at least one pulse combustor, wherein the pulse combustor can be used for mixing and combusting gas and air to generate high-temperature and high-pressure flue gas and generating negative pressure pulses to absorb the gas and the air, a flue gas disturbance cavity is communicated with the pulse combustor and used for heat exchange and noise reduction of the high-temperature and high-pressure flue gas generated by the pulse combustor, 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 low-temperature steam in the steam channel under the action of flow and vibration coupling to generate superheated steam, a chimney is arranged on the flue gas disturbance cavity and used for discharging part of the flue gas after heat exchange; the flue gas disturbance cavity is also communicated with a flue gas circulating part, and the flue gas circulating part is used for circulating part of the flue gas subjected to heat exchange to the pulse combustor; the pulse combustion superheated steam generating device further comprises a control part, and the pulse combustor, the smoke disturbance cavity and the smoke circulating part are electrically connected with the control part.
2. The pulse combustion superheated steam generator as claimed in claim 1, wherein the flue gas disturbance cavity is provided with an explosion venting valve, and the explosion venting valve can automatically open for pressure relief when overpressure occurs in the flue gas disturbance cavity and can fall back and reset after pressure relief.
3. A pulse combustion superheated steam generator as claimed in claim 1 or 2, wherein a gas regulator is connected to the pulse combustor for ensuring that gas pressure is greater than atmospheric pressure so that gas can be drawn into the pulse combustor.
4. The pulse combustion superheated steam generator as claimed in claim 3, wherein the pulse combustor comprises a gas mixing chamber, a combustion chamber and a nozzle which are communicated in sequence, the gas mixing chamber is used for mixing gas and air to form mixed gas, the combustion chamber is used for combusting the mixed gas to generate high-temperature and high-pressure flue gas, the nozzle is communicated with 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 enable the combustion chamber to form a negative pressure environment.
5. The pulse combustion superheated steam generator according to claim 4, wherein the flue gas circulation unit includes a flue gas pipe and a first check valve structure, both ends of the flue gas pipe are respectively communicated with the flue gas disturbance cavity and the combustion chamber, the first check valve structure controls the amount of flue gas flowing back from the flue gas disturbance cavity by adjusting an opening pressure, and the first check valve structure is electrically connected to the control unit.
6. The pulse-combustion superheated steam generator of claim 4, wherein a second check valve structure is provided on the air mixing chamber, the second check valve structure being capable of closing and opening under negative pressure to suck air.
7. The pulse combustion superheated steam generator as claimed in claim 4, wherein said gas mixing chamber is connected to said gas regulator; an ignition needle is arranged between the gas mixing chamber and the combustion chamber, and the ignition needle is electrically connected with the control part.
8. The pulse-combustion superheated steam generator according to claim 4, wherein an ignition detection probe is connected to the combustion chamber, and the ignition detection probe is electrically connected to the control unit.
9. The pulse combustion superheated steam generator of claim 1, wherein the inlet of the flue gas disturbance cavity is sleeved to the outlet of the pulse combustor, and the joint of the outlet of the pulse combustor and the flue gas disturbance cavity is purged with high-pressure nitrogen to form a gas seal.
10. The pulse-combustion superheated steam generator as claimed in claim 1, wherein an insulating layer is arranged on the outer side of the pulse-combustion superheated steam generator, and a sound insulation layer is arranged on the inner wall of the flue gas disturbance cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122688210.2U CN216079751U (en) | 2021-11-04 | 2021-11-04 | Pulse combustion superheated steam generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122688210.2U CN216079751U (en) | 2021-11-04 | 2021-11-04 | Pulse combustion superheated steam generator |
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| Publication Number | Publication Date |
|---|---|
| CN216079751U true CN216079751U (en) | 2022-03-18 |
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