A water-cooled gas burner and thermal energy equipment

Abstract

The present invention discloses a water-cooled gas burner and thermal energy equipment, and relates to the technical field of gas burner structure. The burner includes an air intake pipe and a combustion pipe that are fixedly connected. A first separation pipe arranged axially is fixed on the end face of the air intake pipe to separate the air introduced from the first air intake hole from the gas introduced from the second air intake hole. By arranging a water supply jacket, the temperature in the combustion pipe is reduced, and the concentration of nitrogen oxide emissions is reduced. Compared with the prior art, the water-cooled gas burner can avoid collision between gas and air by arranging the first separation pipe in the air intake pipe, ensure that the airflows of the two can circulate normally, and improve the practicality of the device. By arranging a second separation pipe and a gas diversion hole in the combustion pipe, part of the gas can be circulated in the combustion pipe, the ignition needle first ignites a small fire, and then uses the small fire to ignite the main mixed gas combustion port, which can further improve the ignition success rate.

Description

Technical Field

[0001] The invention relates to the technical field of gas burner structures, and in particular to a water-cooled gas burner and thermal energy equipment. Background Art

[0002] A burner is a thermal energy device that mixes fuel and air in appropriate proportions through a premixing device, delivers them into the furnace at the required concentration, speed, turbulence and mixing method, and enables the fuel to ignite and burn stably in the furnace. The fuel is mainly oil and natural gas.

[0003] At present, some existing water-cooled gas burners are prone to causing the air flow and the gas flow to collide when transporting air and gas. The collision generates pressure, which will hinder the gas intake speed and volume. When the wind speed is too high, the gas pressure of several thousand Pa may be offset, causing dangerous conditions of deflagration and combustion backfire. The deflagration occurs because the air and gas are not mixed evenly, which will cause a sudden loud vibration when ignited, and an explosion may occur if the deflagration is more serious; and the gas does not burn completely when the airflows collide, which will reduce the practicality of the water-cooled gas burner.

[0004] Burners are widely used in various industries such as boiler industry, food machinery, drying equipment, etc. Commercial burners and combustion equipment generally have a rated output thermal power of more than 100kW, a large fan air volume, a large amount of mixed gas brought into the furnace, and a high combustion load; while household burner equipment has a low output thermal power and a small heat exchange area.

[0005] At the same time, some existing gas burners have a high concentration of nitrogen oxide emissions, even exceeding 170 mg / m 3 standard limit.

[0006] The burner provided in the patent application "A Burner" (publication number: CN110864284A) redistributes the gas through the gas distribution pipe and then sends it into the ejector pipe, mixes the air and gas entering it through the ejector, and delivers the mixed gas to the combustion head. However, this structure has multiple gas ejector pipes with smaller apertures, which solves the problem of large airflow counteraction, but the airflow is limited, which is not conducive to the mixing of high air volume mixed gas. It can be used for household burners, but not for commercial burners; in addition, the ejector pipe is prone to cause pipeline blockage, resulting in deflagration and ignition difficulties. Summary of the invention

[0007] In order to solve the above problems in the prior art, the present invention provides a water-cooled gas burner and thermal energy equipment, which can not only solve the gas and air flow collision, but also reduce the nitrogen oxide emission concentration by lowering the combustion chamber temperature. The present invention provides the following technical solutions:

[0008] As a first aspect of the present invention, there is provided a water-cooled gas burner, comprising an air intake pipe and a combustion pipe fixedly connected, a first air intake hole for letting in air is arranged on the outer end face of the air intake pipe, a second air intake hole for letting in gas is arranged on the side wall of the air intake pipe, and a first axially arranged separating tube is fixed on the inner outer end face of the air intake pipe, the length of the end of the first separating tube from the outer end face of the air intake pipe is greater than the length of the second air intake hole from the outer end face of the air intake pipe, so as to separate the air let in by the first air intake hole from the gas let in by the second air intake hole.

[0009] The right side of the air inlet pipe is fixedly connected to the combustion pipe; the left end face of the combustion pipe is provided with an ignition and fire detection device.

[0010] The first air inlet is communicated with the first separation tube; preferably, the inner diameter of the first separation tube is larger than the aperture of the first air inlet.

[0011] Preferably, an intake pipe through hole is provided at the connection between the combustion pipe and the intake pipe, so that the mixed gas introduced by the intake pipe is passed into the combustion pipe.

[0012] Preferably, a swirl exhaust fan is provided on the through hole of the air inlet pipe to mix the unmixed gas and air in the air inlet pipe. The swirl exhaust fan is installed to rotate at a high speed by electricity, and the high stirring frequency of the swirl exhaust fan drives and pushes the mixed gas to mix the air (oxygen) and gas evenly.

[0013] Preferably, a second separator tube is fixedly connected to the left inner side surface of the combustion tube, and the air intake pipe is connected to the second separator tube via an air intake pipe through hole; a gas diversion hole is opened on the side surface of the second separator tube to divert the mixed gas.

[0014] Preferably, the right end of the second partition tube is in a trumpet-shaped shape, which is convenient for focusing the combustion material and increasing the air flow velocity to achieve jet combustion.

[0015] Preferably, the ratio of the inner diameter of the air intake pipe to the inner diameter of the combustion pipe is in the range of 1:2.0 to 2.5;

[0016] The ratio of the inner diameter of the first partition pipe to the inner diameter of the intake pipe is in the range of 1:1.2 to 1.5;

[0017] The ratio of the inner diameter of the second separation tube to the inner diameter of the combustion tube is in the range of 1:2.0 to 2.5;

[0018] The ratio of the diameter of the gas diversion hole to the inner diameter of the closing end of the second separation pipe is in the range of 1:10 to 12;

[0019] The ratio of the length of the second partition tube to the length of the combustion tube is in the range of 1:1.5 to 2;

[0020] The ratio of the inner diameter of the closing end of the second partition tube to the inner diameter of the second partition tube is in the range of 1:1.8-2.

[0021] Furthermore, the ratio of the distance between the end of the first separation pipe and the swirl fan to the axial length of the intake pipe is in the range of 1:3 to 5. In this space, the air and gas are first premixed and then uniformly mixed for the second time by the swirl method of the swirl exhaust fan.

[0022] The present invention uses a water-cooled jacket (a water-wrapped fire cooling method) to reduce the temperature of the combustion tube. The combustion chamber temperature below 1500 degrees Celsius is not easy to produce nitrogen oxides, thereby reducing the furnace temperature to reduce the generation of nitrogen oxides. The specific structure is as follows:

[0023] A water supply jacket and a heat conductive jacket are arranged on the inner wall of the combustion tube in sequence. The upper and lower parts of the water supply jacket are respectively connected to the inlet and outlet water pipes. The cavity surrounded by the water supply jacket in the combustion tube is heat exchanged and cooled by circulating water to avoid damage to the combustion tube caused by excessive heat, while achieving the purpose of reducing nitrogen oxides. The heat conductive jacket adopts heat conductive material to absorb the heat energy in the furnace and transfer it to the water supply jacket.

[0024] Furthermore, a third separator tube is arranged inside the heat-conducting sleeve. The third separator tube is made of carbon steel Q245R material, has good heat absorption and thermal conductivity, and is not easily deformed after burning. The heat generated by the combustion is transferred to the heat-conducting sleeve and the cooling water in the water supply sleeve through the carbon steel Q245R material.

[0025] Furthermore, in the combustion tube, the ignition and fire detection device is located between the second separation tube and the third separation tube, and is used to ignite the mixed gas in the combustion tube. First, a small amount of gas output from the gas diversion hole of the second separation tube is ignited, and the small flame here is used to ignite the main mixed gas at the end of the second separation tube, thereby improving the ignition success rate.

[0026] As a second aspect of the present invention, a thermal energy device is provided, the thermal energy device comprises the water-cooled gas burner, and the thermal energy device comprises a steam boiler, a vacuum phase change boiler, and a normal pressure hot water boiler. The water-cooled gas burner and thermal energy device provided by the present invention not only have high safety, but also greatly reduce the emission of oxides, and are suitable for the promotion and use of large-scale thermal energy devices in public places.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The water-cooled gas burner provided by the present invention can avoid collision between gas and air by arranging a first separation tube in the air inlet pipe, ensure that the two airflows can flow normally and subsequently mix, avoid explosion and combustion backfire, and improve the practicality of the device.

[0029] 2. The water-cooled gas burner provided by the present invention can allow part of the gas to flow outside the second partition tube in the combustion tube by arranging a second partition tube and a gas diversion hole in the combustion tube. The ignition needle first ignites a small fire, and then uses the small fire to ignite the main mixed gas combustion port, which can further improve the ignition success rate.

[0030] 3. The water-cooled gas burner provided by the present invention can absorb the heat of the inner wall of the combustion tube by arranging a heat conductive sleeve and a water supply jacket to avoid damage to the combustion tube caused by excessive heat, and can also use water cooling heat exchange to reduce the surface temperature of the combustion chamber, thereby achieving the effect of reducing the generation of nitrogen oxides in the combustion chamber.

[0031] 4. The water-cooled gas burner provided by the present invention can evenly stir the air and gas mixture by setting a swirl exhaust fan, so as to achieve the purpose of rapid and even mixing, and is not prone to the occurrence of deflagration and flashback during combustion.

[0032] 5. The burner provided by the present invention and the thermal energy equipment using the burner are suitable for large steam boilers, vacuum phase change boilers, and atmospheric pressure hot water boilers, and can be used in the thermal energy supply of public places such as hotels, hospitals, schools, and residential areas. The emission of nitrogen oxides is greatly reduced, and at the same time, it has better safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0034] Figure 1 A cross-sectional structural diagram of a water-cooled gas burner provided by the present invention;

[0035] Figure 2 The overall structure diagram of a water-cooled gas burner provided by the present invention;

[0036] Figure 3 A rear view of a water-cooled gas burner provided by the present invention;

[0037] Figure 4 for Figure 3 AA section view;

[0038] Figure 5 for Figure 2 The structural diagram of the combustion tube after removing the intake tube;

[0039] Figure 6 A schematic diagram of the structure of a water supply jacket of a water-cooled gas burner provided by the present invention;

[0040] Figure 7 A schematic diagram of the structure of a third partition tube of a water-cooled gas burner provided by the present invention;

[0041] Figure 8 A schematic diagram of the structure of a swirl exhaust fan in a water-cooled gas burner provided by the present invention.

[0042] 1. Air inlet pipe; 2. Air inlet hole 1; 3. Air inlet hole 2; 4. Separator tube 1; 5. Combustion tube; 6. Separator tube 2; 7. Water supply jacket; 8. Heat transfer jacket; 9. Separator tube 3; 10. Gas diversion hole; 11. Swirl exhaust fan; 12. Ignition and fire detection device; 13. Inlet and outlet water pipes; 14. Air inlet pipe through hole; 15. Ignition and fire detection device hole; 16. Inlet and outlet water pipe interfaces; 17. Water jacket inlet and outlet holes; 18. Through groove. DETAILED DESCRIPTION

[0043] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0044] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0045] The “left side”, “right side”, “inside” and “outside” mentioned herein respectively represent the relative position relationship of each component and do not limit the orientation when in use.

[0046] like Figure 1 and Figure 2As shown, the water-cooled gas burner comprises an air intake pipe 1 and a combustion pipe 5, the air intake pipe 1 and the combustion pipe 5 are connected, an end face is provided on the outer side of the air intake pipe 1, a first air intake hole 2 for introducing air is provided on the end face, a second air intake hole 3 for introducing gas is provided on the side wall of the air intake pipe 1, a first separation pipe 4 arranged axially is fixed on the end face of the air intake pipe 1, the inner diameter of the first separation pipe 4 is larger than the aperture of the first air intake hole 2, the length of the end of the first separation pipe from the outer end face of the air intake pipe is larger than the length of the second air intake hole from the outer end face of the air intake pipe, the air introduced by the first air intake hole 2 is separated from the gas introduced by the second air intake hole 3;

[0047] like Figure 5 As shown, the combustion tube 5 is connected to the intake tube 1 with an intake tube through hole 14, and the mixed gas introduced by the intake tube 1 is passed into the combustion tube 5; a swirl exhaust fan 11 is arranged on the intake tube through hole 14, and the swirl exhaust fan structure is as shown in Figure 8 As shown, the swirl exhaust fan 11 is sealed and installed at the edge of the inlet pipe through hole 14, which is airtight, and the unmixed gas and air in the inlet pipe 1 are mixed evenly. The swirl exhaust fan 11 is installed to rotate at a high speed through electricity, and the high stirring frequency of the swirl exhaust fan drives and pushes the mixed gas to mix the air (oxygen) and gas evenly.

[0048] like Figure 1 and Figure 4 As shown, a second separator tube 6 is arranged in the combustion tube 5, and the second separator tube 6 is fixed to the periphery of the intake pipe through hole 14. A plurality of rows of gas diversion holes 10 are arranged axially on the surface of the second separator tube 6 to divert the mixed gas. As a typical embodiment, the diameter of the gas diversion holes 10 is 10 mm, and 13 holes are arranged in each row, and a total of 4 rows are evenly arranged. The mixed gas introduced through the intake pipe through hole 14 enters the second separator tube 6 of the combustion tube 5, a part of which is diverted through the gas diversion holes 10, and most of it is discharged from the end of the second separator tube 6. The end of the second separator tube 6 is closed to increase the spraying speed of the gas discharged from the end of the second separator tube 6, thereby achieving stable flame and high-speed combustion, and avoiding the occurrence of flameout failure rate during the combustion process.

[0049] like Figure 4 As shown, the distance between the end of the first partition pipe 4 and the cyclone exhaust fan 11 is 50 mm.

[0050] like Figure 1 and Figure 4 As shown, a water supply jacket 7 is provided on the inner wall of the combustion tube 5. Figure 3 and Figure 6 As shown, the water supply jacket 7 has water inlet and outlet holes 17 at the upper and lower parts, respectively, and the water inlet and outlet holes 17 are sealed and connected to the water inlet and outlet pipes 13, as shown in FIG. Figure 5As shown, inlet and outlet water pipe interfaces 16 are provided at the positions of the inlet and outlet water pipes 13 corresponding to the upper and lower parts of the combustion tube 5. The inlet and outlet water pipes 13 penetrate the inlet and outlet water pipe interfaces 16. Cold water is supplied to the water jacket 7 and heated water is discharged through the two inlet and outlet water pipes 13, respectively, to facilitate water circulation heat exchange and reduce the temperature inside the combustion tube 5, thereby achieving the purpose of reducing nitrogen oxides.

[0051] The combustion tube 5 is fixedly provided with a third partition tube 9, which is a cylindrical tube. Figure 7 As shown, a heat-conducting sleeve 8 is arranged between the third partition tube 9 and the water supply jacket 7. The material used for the third partition tube 9 is carbon steel Q245R, which has good heat absorption and thermal conductivity and is not easily deformed after burning. The third partition tube 9 is equivalent to a furnace, and the mixed gas burns in the cavity here. After the heat is generated, it is transferred to the heat-absorbing material (heat-conducting sleeve 8) through the carbon steel Q245R material and continues to be transferred to the cold water in the water supply jacket. Thereby, the space inside the third partition tube 9 and the surface temperature of the carbon steel Q245R material are cooled, and the surface temperature of the third partition tube 9 is always maintained between 300 degrees Celsius and 400 degrees Celsius.

[0052] Among them, the ratio of the inner diameter of the air intake pipe to the inner diameter of the combustion pipe ranges from 1:2.0 to 2.5;

[0053] The ratio of the inner diameter of the first partition pipe to the inner diameter of the intake pipe is in the range of 1:1.2 to 1.5;

[0054] The ratio of the inner diameter of the second separation tube to the inner diameter of the combustion tube is in the range of 1:2.0 to 2.5;

[0055] The ratio of the diameter of the gas diversion hole to the inner diameter of the closing end of the second separation pipe is in the range of 1:10 to 12;

[0056] The ratio of the distance between the end of the first separation pipe and the swirl fan to the axial length of the intake pipe is in the range of 1:3 to 5;

[0057] The ratio of the length of the second partition tube to the length of the combustion tube is in the range of 1:1.5 to 2;

[0058] The ratio of the inner diameter of the closing end of the second partition tube to the inner diameter of the second partition tube is in the range of 1:1.8 to 2.

[0059] As a first typical embodiment, the air intake pipe 1 is 255 mm long and has an inner diameter of The first partition tube 4 has a length of 210 mm and an inner diameter The distance between the end of the first partition tube 4 and the swirl exhaust fan 11 is 50 mm; the combustion tube 5 is 500 mm long and has an inner diameter of The second partition tube 6 is 280 mm long and has an inner diameter Inner diameter of closing end The third partition tube 9 is 480 mm long and has an inner diameter The heat-conducting sleeve 8 is made of aluminum. Aluminum is a silvery-white light metal with good thermal conductivity and ductility. This property (ductility) is used to process the aluminum sleeve.

[0060] The heat-conducting sleeve 8 absorbs the heat energy of the furnace (inside the third partition tube 9) and exchanges heat with the water-feeding sleeve 7. The water-feeding sleeve 7, the heat-conducting sleeve 8 and the third partition tube 9 are closely embedded in sequence.

[0061] The heat of the inner wall of the combustion tube 5 can be absorbed by the heat-conducting sleeve 8 and the water-supplying sleeve 7 to avoid damage to the combustion tube 5 caused by excessive heat. At the same time, the low temperature of the circulated water is used to cool the heat-conducting sleeve 8 and then cool the third separation tube 9, so that the combustion temperature in the third separation tube 9 is reduced, thereby reducing the generation of nitrogen oxides.

[0062] As a typical embodiment, the air intake pipe 1 is made of 304 stainless steel, the combustion tube 5 is made of Q235A carbon steel, the water supply jacket 7 is made of carbon steel Q235A with an inner wall coated with fired enamel, the heat conductive sleeve 8 is made of aluminum, the first partition tube 4, the second partition tube 6 and the swirl exhaust fan 11 are all made of 304 stainless steel to prevent corrosion from acidic condensed water generated by the combustion of the mixed gas, and the third partition tube 9 is made of carbon steel Q245R.

[0063] Since the combustion temperature in the furnace is too high, the temperature sensor cannot be used. The temperature of the boiler furnace can be inferred from the flue gas emission concentration. The nitrogen oxide content in the furnace is less than 50mg / m 3 , when the oxygen content is about 6%, the furnace temperature is lower than 1500℃; or it can be obtained by wireless detection through infrared thermal imaging thermometer, a special tool for testing the furnace body and furnace. These two detection methods are commonly used in this field and will not be described here.

[0064] like Figure 1 , Figure 3 and Figure 5 As shown, an ignition detection device hole 15 and an ignition detection device 12 penetrating the ignition detection device hole 15 are provided on the end cover of the combustion tube 5 at the contact end with the air inlet pipe 1. The ignition detection device 12 is located between the second partition tube 6 and the third partition tube 9 in the combustion tube 5, and is used to ignite the mixed gas in the combustion tube 5. The present invention utilizes the multiple rows of gas diversion holes 10 provided in the second partition tube 6 to release a small amount of gas. After the ignition detection device 12 is ignited, the small amount of gas released from the gas diversion holes 10 is first ignited to generate a small fire, and then the small fire is used to ignite the main mixed gas ejected from the end of the second partition tube 6, so that each ignition can be guaranteed to be successful.

[0065] like Figure 1 and Figure 4 As shown, a through groove 18 is provided at the end of the combustion tube 5, and the through groove 18 serves as a burner flame outlet and plays a role in guiding the flame.

[0066] Because the volume of the small circular cavity corresponding to the first separating tube 4 is larger than the volume outside the circular cavity, it can ensure that the amount of gas introduced through the second air inlet 3 is smaller than the amount of air introduced through the first air inlet 2, thereby avoiding gas explosion caused by excessive gas accumulation and improving safety.

[0067] Moreover, the gas introduced from the second air inlet 3 impacts the cylindrical cavity of the first separation tube, which slows down the airflow speed, causing the gas to slowly combine with the air. On the one hand, this improves safety, and on the other hand, it is first mixed between the first separation tube 4 and the swirl exhaust fan 11, and then stirred by the swirl exhaust fan for a second mixing before entering the combustion tube 5.

[0068] Working principle: When in use, the gas enters the intake pipe 1 through the second air inlet hole 3, and the air enters the first separation pipe 4 through the first air inlet hole 2. The gas in the intake pipe 1 can avoid colliding with the air through the first separation pipe 4. The air is mixed with the gas at the outlet of the first separation pipe 4 and stirred by the uniform swirl of the swirl exhaust fan 11. It enters the second separation pipe 6 through the intake pipe through hole 14, which can be better mixed and prevent combustion, explosion and flameout. The mixed gas is then diverted through the gas diversion hole 10, and the mixed gas is used The ignition and fire detection device 12 performs ignition and fire detection, and then guides the fire to ignite the main mixed gas at the right end of the second partition tube 6. The small fire leads to a large fire combustion method can improve the ignition success rate. After the burning flame heats the inner wall of the third partition tube 9, the heat is transferred to the heat conductive sleeve 8, and then the heat conductive sleeve 8 absorbs the heat energy and transfers the heat to the water jacket 7. The water jacket 7 is connected to the inlet and outlet water pipes 13 for water circulation. While the heat is transferred out, water cooling can also be used to cool the inside of the partition tube 3 9. After the temperature is lowered, the production of nitrogen oxides is suppressed, thereby achieving the purpose of low-nitrogen combustion.

[0069] Through structural improvements, the concentration of nitrogen oxides (NOx) discharged is 30mg / m 3 Below, while the rated output thermal power is about 120kW.

[0070] The burner provided by the present invention is suitable for large steam boilers, vacuum phase change boilers, and normal pressure hot water boilers, and can be used for heat energy supply in public places such as hotels, hospitals, schools, and residential areas.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A water-cooled gas burner, characterized in that: It comprises an intake pipe and a combustion pipe which are fixedly connected, wherein a first intake hole for letting in air is arranged on the outer end surface of the intake pipe, a second intake hole for letting in fuel gas is arranged on the side wall of the intake pipe, and a first separation pipe arranged axially is fixed on the inner outer end surface of the intake pipe, the length of the end of the first separation pipe from the outer end surface of the intake pipe is greater than the length of the second intake hole from the outer end surface of the intake pipe, so as to separate the air let in by the first intake hole from the fuel gas let in by the second intake hole; The right side of the air intake pipe is fixedly connected to the combustion tube; the left end face of the combustion tube is provided with an ignition and fire detection device; the left inner side face of the combustion tube is fixedly connected with a second separator tube, and the air intake pipe is connected with the second separator tube via an air intake pipe through hole; a gas diversion hole is opened on the side wall of the second separator tube; a water supply jacket and a heat conduction jacket are arranged in sequence in the combustion tube; a third separator tube is arranged inside the heat conduction jacket; the ignition and fire detection device is located between the second separator tube and the third separator tube; the ratio of the diameter of the gas diversion hole to the inner diameter of the closing end of the second separator tube is in the range of 1:10 to 12.

2. A water-cooled gas burner according to claim 1, characterized in that: The first air inlet hole is connected with the first separation tube; the inner diameter of the first separation tube is larger than the aperture of the first air inlet hole; an air inlet pipe through hole is provided at the connection between the combustion tube and the air inlet pipe, and a swirl exhaust fan is arranged on the air inlet pipe through hole to pass the mixed gas introduced by the air inlet pipe into the combustion tube.

3. A water-cooled gas burner according to claim 1, characterized in that: The right end of the second partition tube is in a closed shape.

4. A water-cooled gas burner according to claim 3, characterized in that: The ratio of the inner diameter of the air intake pipe to the inner diameter of the combustion pipe is in the range of 1:2.0 to 2.5; The ratio of the inner diameter of the first partition pipe to the inner diameter of the intake pipe is in the range of 1:1.2 to 1.5; The ratio of the inner diameter of the second separation tube to the inner diameter of the combustion tube is in the range of 1:2.0 to 2.5; The ratio of the length of the second partition tube to the length of the combustion tube is in the range of 1:1.5 to 2; The ratio of the inner diameter of the closing end of the second partition tube to the inner diameter of the second partition tube is in the range of 1:1.8-2.

5. A water-cooled gas burner according to claim 4, characterized in that: The ratio of the distance between the end of the first partition pipe and the swirl fan to the axial length of the air intake pipe is in the range of 1:3-5.

6. A water-cooled gas burner according to claim 5, characterized in that: The upper and lower parts of the water supply jacket are connected to the inlet and outlet water pipes respectively; The heat-conducting sleeve is made of heat-conducting material.

7. A water-cooled gas burner according to claim 6, characterized in that: A third separation tube is arranged inside the heat-conducting sleeve, and the third separation tube is made of heat-conducting material.

8. A thermal energy device, characterized in that: It comprises a water-cooled gas burner as claimed in any one of claims 1 to 7, wherein the thermal energy equipment comprises a steam boiler, a vacuum phase change boiler and a normal pressure hot water boiler.

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