A super audio online heating annealing device

Abstract

This invention provides an ultrasonic online heating and annealing device, comprising an ultrasonic heater, a heating and annealing coil connected to the ultrasonic heater, a heating and annealing tube covering the outside of the heating and annealing coil, a protective gas generating assembly connected to the side of the heating and annealing tube, protective gas combustion tubes connected to both ends of the heating and annealing tube, and a cooling assembly connected to the heating and annealing coil. The protective gas combustion tubes are connected to the protective gas generating assembly. A metal tube passes through the heating and annealing coil. The side of the heating and annealing tube is provided with a hydrogen inlet and a hydrogen-nitrogen mixed gas inlet, respectively. The ultrasonic online heating and annealing device provided by this invention introduces hydrogen and a hydrogen-nitrogen mixed gas into the heating section and annealing cooling section of the heating and annealing coil through the hydrogen inlet and the hydrogen-nitrogen mixed gas inlet of the heating and annealing tube, respectively. The two gases provide zoned protection for the heating and annealing processes of the metal tube, and the protective atmosphere is adjustable, thus improving the annealing effect of the metal tube.

Description

Technical Field

[0001] This invention belongs to the technical field of annealing equipment, specifically relating to an ultrasonic online heating annealing device. Background Technology

[0002] Annealing is an essential metal heat treatment process in the processing of metal tubes. It involves slowly heating the metal to a certain temperature, holding it for a sufficient time, and then cooling it at an appropriate rate. The purpose is to reduce hardness, improve machinability, eliminate residual stress, stabilize dimensions, reduce deformation and cracking tendency, refine crystal structure, adjust microstructure, and eliminate microstructural defects. The metal tube is first heated by a heating device and then cooled by water or coolant to complete the annealing process. Protective gas can also be used for protection during annealing.

[0003] Patent application CN205710815U discloses an annealing device for metallic materials, which solves the problem of difficult emission of waste gas from annealing furnaces in the prior art. The key technical point is that the annealing device for metallic materials includes a frame, an annealing furnace mounted on the frame, an ammonia source for introducing ammonia into the annealing cavity of the furnace, a discharge channel communicating with the annealing cavity on the furnace, an exhaust pipe communicating with the discharge channel on the frame, and an ignition component for igniting the gas at one end of the exhaust pipe. Waste gas from the annealing furnace enters the discharge channel, is discharged through the exhaust pipe, and the hydrogen in the waste gas is burned off by the ignition component, thereby achieving the effect of treating and discharging the waste gas and reducing safety hazards.

[0004] However, the aforementioned annealing apparatus uses the same gas for protection during the annealing process of metal tubes, and cannot adjust the composition and ratio of the protective gas according to different metal materials, resulting in poor heating and annealing protection effects on the metal tubes. This solution addresses this technical problem. Summary of the Invention

[0005] The purpose of this invention is to provide an ultrasonic online heating and annealing device, which solves the technical problem of poor protection effect of existing ultrasonic online heating and annealing devices for the heating and annealing of metal tubes. Hydrogen and hydrogen-nitrogen mixed gas are introduced into the heating section and annealing cooling section of the heating and annealing coil through the hydrogen inlet and hydrogen-nitrogen mixed gas inlet of the heating and annealing tube, respectively. The two gases provide zoned protection for the heating and annealing process of the metal tube, and the protective atmosphere of the protective gas is adjustable, thereby improving the annealing effect of the metal tube.

[0006] An ultrasonic online heating and annealing device includes an ultrasonic heater, a heating and annealing coil connected to the ultrasonic heater, a heating and annealing tube covering the outside of the heating and annealing coil, a protective gas generating component connected to the side of the heating and annealing tube, a protective gas combustion tube connected to both ends of the heating and annealing tube, and a cooling component connected to the heating and annealing coil. The protective gas combustion tube is connected to the protective gas generating component, and a metal tube passes through the heating and annealing coil.

[0007] The heating annealing tube is provided with a hydrogen inlet and a hydrogen-nitrogen mixed gas inlet on its side. The protective gas generating assembly includes a water electrolysis cell connected to the cathode chamber and the hydrogen inlet, and an ammonia decomposition furnace one and an ammonia decomposition furnace two connected to one end of the protective gas combustion tube, respectively. The exhaust pipes of the ammonia decomposition furnace one and the ammonia decomposition furnace two are connected to a mixed gas pipe, which is connected to the hydrogen-nitrogen mixed gas inlet.

[0008] The other end of the protective gas combustion tube is connected to the end of the heating annealing tube. An oxygen inlet is provided on the side of the protective gas combustion tube. The anode chamber of the water electrolysis cell is connected to the oxygen inlet through an oxygen supply pipe.

[0009] The heating and annealing coil is a hollow spiral copper tube, and the heating and annealing coil includes a heating section and an annealing and cooling section that are connected to each other. The two ends of the heating section are respectively connected to the ultrasonic heater.

[0010] The annealing cooling section has a water inlet at one end away from the heating section, and the heating section has a water outlet at one end away from the annealing cooling section. The cooling assembly includes a circulating water pipe connected to the water inlet and the water outlet at both ends, a circulating water pump and a radiator respectively installed on the circulating water pipe. The circulating water pipe is filled with pure water, and the circulating water pipe is connected to the water electrolysis cell through a water supply pipe. A water supply valve is installed on the water supply pipe.

[0011] The cathode chamber of the water electrolyzer is connected to the hydrogen inlet via a hydrogen supply pipe. A blower is installed on the hydrogen supply pipe, and a blower is installed on the mixed gas pipe.

[0012] A partition is provided on the inner side of the heating and annealing tube. The partition is located between the hydrogen inlet and the hydrogen-nitrogen mixture inlet. The partition has a vent hole. The heating and annealing coil passes through the vent hole. The heating section and the annealing cooling section are respectively located on both sides of the partition. A gas analyzer is installed in the vent hole. The gas analyzer is electrically connected to the first fan and the second fan respectively through a controller.

[0013] A split pipe is provided between the hydrogen supply pipe and the mixed gas pipe, and a mixing fan is provided on the split pipe. The mixing fan is electrically connected to the gas analyzer through a controller.

[0014] A water supply pipe is installed on the circulating water pipe, and a valve is installed on the water supply pipe.

[0015] A nitrogen supply pipe is installed on the mixing gas pipe, and a valve is installed on the nitrogen supply pipe.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] (1) By setting up a heating annealing tube, the following technical effects are achieved:

[0018] Firstly, the heating and annealing tube is equipped with a hydrogen inlet and a hydrogen-nitrogen mixed gas inlet on its side. Hydrogen and hydrogen-nitrogen mixed gas are introduced into the heating section and annealing cooling section of the heating and annealing coil through the hydrogen inlet and the hydrogen-nitrogen mixed gas inlet, respectively. The hydrogen reduces the oxygen in the metal tube during the heating process, maintaining a reducing atmosphere during the heating process and preventing the oxidation of the metal tube by oxygen. The hydrogen-nitrogen mixed gas further reduces and protects the metal tube in the annealing cooling section. This provides zoned protection for the heating and annealing processes of the metal tube, improving the annealing effect of the metal tube.

[0019] Secondly, a baffle is installed inside the heating and annealing tube. The baffle is located between the hydrogen inlet and the hydrogen-nitrogen mixture inlet. The baffle has a vent hole. The heating and annealing coil passes through the vent hole. By introducing hydrogen and hydrogen-nitrogen mixture at different pressures to both sides of the baffle, the two protective gases can pass through the vent hole, thereby adjusting the composition and ratio of the protective gases during the heating and annealing cooling process of the metal tube, resulting in better heating and annealing effects for different metal tubes.

[0020] Third, a gas analyzer is installed in the vent hole to detect the gas content in the heating annealing tube. Then, the controller sends signals to fan one, fan two and mixing fan respectively. Fan one and fan two adjust the flow rate of the protective gas, and the mixing fan adjusts the flow direction and flow rate of the protective gas, making it convenient and quick to adjust the composition of the protective gas.

[0021] (2) By setting up a protective gas combustion tube, the following technical effects are achieved;

[0022] First, the protective gas combustion tube is connected to the heating and annealing tube. The heating and annealing tube is under positive pressure. The excess protective gas in the heating and annealing tube is consumed through the protective gas combustion tube, making the heating and annealing in the heating and annealing tube safer.

[0023] Secondly, the protective gas combustion tube is connected to ammonia decomposition furnace one and ammonia decomposition furnace two respectively. The protective gas provides heat to ammonia decomposition furnace one and ammonia decomposition furnace two through combustion, effectively recovering and utilizing the protective gas, and at the same time making the ammonia decomposition reaction produce hydrogen-nitrogen mixed gas with high efficiency.

[0024] Third, the protective gas combustion tube is equipped with an oxygen inlet, which supplies oxygen to the protective gas combustion through the oxygen supply pipe, resulting in more complete combustion of the protective gas and higher production efficiency of the hydrogen-nitrogen mixed gas.

[0025] (3) By setting up a heating annealing coil, the following technical effects are achieved;

[0026] Firstly, pure water flows inside the heating annealing coil. When the heating section heats the metal tube, the pure water cools the inside of the heating annealing coil. The outside is protected by a protective gas, which prevents the heating annealing coil from oxidizing, making the heating annealing coil more durable.

[0027] Secondly, the heating and annealing coil is equipped with an annealing cooling section. By introducing pure water into the annealing cooling section, the heated metal tube is cooled by the annealing cooling section when it passes through, resulting in higher cooling efficiency for the metal tube. The cooled metal tube is protected by a protective gas, further enhancing the annealing and cooling effect. The heating and annealing coil has multiple functions.

[0028] (4) By setting up a water electrolysis cell, the following technical effects are achieved:

[0029] First, hydrogen is supplied to the hydrogen inlet through the hydrogen supply pipe, ensuring the reducing atmosphere inside the heating annealing tube;

[0030] Secondly, oxygen is supplied to the combustion tube of the protective gas through the oxygen supply pipe, which makes the protective gas burn better and improves the production efficiency of hydrogen-nitrogen mixed gas in the ammonia decomposition furnace.

[0031] Third, it utilizes the pure water that has been heated and annealed by the coil inside the circulating water pipe. The pure water has a high temperature and is easy to use, which improves the efficiency of hydrogen production. Attached Figure Description

[0032] Figure 1 This is a process flow diagram of the present invention.

[0033] In the diagram: 1. Ultrasonic heater; 2. Heating and annealing tube; 21. Hydrogen inlet; 22. Hydrogen-nitrogen mixed gas inlet; 3. Metal tube; 4. Water electrolyzer; 41. Hydrogen supply tube; 42. Oxygen supply tube; 51. Ammonia decomposition furnace one; 52. Ammonia decomposition furnace two; 53. Mixed gas tube; 54. Nitrogen replenishment tube; 6. Protective gas combustion tube; 61. Oxygen inlet; 7. Heating and annealing coil; 71. Heating section; 72. Annealing cooling section; 73. Circulating water tube; 74. Circulating water pump; 75. Water supply tube; 76. Water supply valve; 77. Diverter tube; 78. Makeup water tube; 79. Mixing fan; 8. Radiator; 81. Fan one; 82. Fan two; 9. Baffle; 10. Gas analyzer. Detailed Implementation

[0034] To more clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0035] See Figure 1 An ultrasonic online heating and annealing device includes an ultrasonic heater 1, a heating and annealing coil 7 connected to the ultrasonic heater 1, a heating and annealing tube 2 covering the outside of the heating and annealing coil 7, a protective gas generating component connected to the side of the heating and annealing tube 2, a protective gas combustion tube 6 connected to both ends of the heating and annealing tube 2, and a cooling component connected to the heating and annealing coil 7. The protective gas combustion tube 6 is connected to the protective gas generating component, and a metal tube 3 passes through the heating and annealing coil 7.

[0036] The heating annealing tube 2 is provided with a hydrogen inlet 21 and a hydrogen-nitrogen mixed gas inlet 22 on its side. The protective gas generating assembly includes a water electrolysis cell 4 connected to the cathode chamber and the hydrogen inlet 21, and an ammonia decomposition furnace 1 51 and an ammonia decomposition furnace 2 52 connected to one end of the protective gas combustion tube 6. The exhaust pipes of the ammonia decomposition furnace 1 51 and the ammonia decomposition furnace 2 52 are connected to a mixed gas pipe 53. The mixed gas pipe 53 is connected to the hydrogen-nitrogen mixed gas inlet 22. The ammonia decomposition furnace 1 51 and the ammonia decomposition furnace 2 52 are heated by the protective gas combustion tube 6, which ensures the production efficiency of the hydrogen-nitrogen mixed gas.

[0037] The other end of the protective gas combustion tube 6 is connected to the end of the heating annealing tube 2. An oxygen inlet 61 is provided on the side of the protective gas combustion tube 6. The anode chamber of the water electrolysis cell 4 is connected to the oxygen inlet 61 through an oxygen supply tube 42.

[0038] The heating and annealing coil 7 is a hollow spiral copper tube. The heating and annealing coil 7 includes a heating section 71 and an annealing and cooling section 72 that are connected to each other. The two ends of the heating section 71 are respectively connected to the ultrasonic heater 1.

[0039] The annealing cooling section 72 is provided with a water inlet at the end away from the heating section 71, and the heating section 71 is provided with a water outlet at the end away from the annealing cooling section 72. The cooling assembly includes a circulating water pipe 73 connected to the water inlet and the water outlet at both ends, a circulating water pump 74 and a radiator 8 respectively installed on the circulating water pipe 73. The circulating water pipe 73 is filled with pure water, and the circulating water pipe 73 is connected to the water electrolysis tank 4 through a water supply pipe 75. A water supply valve 76 is installed on the water supply pipe 75.

[0040] The cathode chamber of the water electrolyzer 4 is connected to the hydrogen inlet 21 via a hydrogen supply pipe 41. A blower 81 is installed on the hydrogen supply pipe 41, and a blower 82 is installed on the mixed gas pipe 53.

[0041] A partition 9 is provided on the inner side of the heating and annealing tube 2. The partition 9 is located between the hydrogen inlet 21 and the hydrogen-nitrogen mixture inlet 22. The partition 9 is provided with a vent hole. The heating and annealing coil 7 passes through the vent hole. The heating section 71 and the annealing cooling section 72 are respectively located on both sides of the partition 9. A gas analyzer 10 is installed in the vent hole. The gas analyzer 10 is electrically connected to the first fan 81 and the second fan 82 through a controller.

[0042] A split pipe 77 is provided between the hydrogen supply pipe 41 and the mixing pipe 53. A mixing fan 79 is provided on the split pipe 77. The mixing fan 79 is electrically connected to the gas analyzer 10 through a controller.

[0043] A water supply pipe 78 is installed on the circulating water pipe 73, and a valve is installed on the water supply pipe 78.

[0044] A nitrogen supply pipe 54 is installed on the mixing pipe 53, and a valve is installed on the nitrogen supply pipe 54.

[0045] The specific working process of this invention:

[0046] Open the valves of the water supply valve 76 and the water replenishment pipe 78, and fill the circulating water pipe 73 with pure water through the water replenishment pipe 78, and fill the water electrolysis cell 4 (the electrolysis cell also contains electrolytes; the principle of hydrogen production by water electrolysis is existing technology and will not be described in detail here). Add ammonia raw materials to ammonia decomposition furnace 1 51 and ammonia decomposition furnace 2 52 respectively. Turn off the mixing fan 79 on the diversion pipe 77, and start the circulating water pump 74 to circulate the pure water in the heating annealing coil 7, so that the hydrogen produced by the water electrolysis cell 4 enters the hydrogen inlet 21 through the hydrogen supply pipe 41, and the hydrogen inlet 21 and ammonia decomposition furnace 1 51 and ammonia decomposition furnace 2 52. The generated hydrogen-nitrogen mixture enters the hydrogen-nitrogen mixture inlet 22 and passes through the heating annealing tube 2. The air in the heating annealing tube 2 is carried out from both ends and ignited by the protective gas combustion tube 6. The combustion of the protective gas provides heat to the ammonia decomposition furnace 1 51 and the ammonia decomposition furnace 2 52 (the decomposition reaction of ammonia is an endothermic reaction. The temperature of ammonia in the ammonia decomposition furnace is increased by combustion heating, thereby improving the reaction efficiency. The principle of ammonia decomposition is existing technology and will not be described in detail here). At this time, the heating annealing tube 2 is filled with a positive pressure environment of two reducing protective gases, which prevents oxygen from entering.

[0047] The oxygen produced by the water electrolysis cell 4 enters the oxygen inlet 61 of the protective gas combustion tube 6 through the oxygen supply pipe 42, which improves the combustion efficiency of the protective gas.

[0048] Insert the metal tube 3 into the heating section 71 of the heating annealing coil 7, start the ultrasonic heater 1, the ultrasonic heater 1 heats the metal tube 3, the metal tube 3 is protected by hydrogen, which prevents the metal tube 3 from oxidizing. Depending on the material of the metal tube 3, different air volumes of hydrogen can be provided by controlling the fan 82 and the water electrolysis cell 4.

[0049] The heated metal tube 3 continues to move forward to the annealing cooling section 72, where it is cooled by pure water. The metal tube 3 is protected during the cooling process by a hydrogen-nitrogen mixed gas. By controlling the fan 81, ammonia decomposition furnace 51, and ammonia decomposition furnace 52, different volumes of hydrogen-nitrogen mixed gas can be supplied to the annealing cooling section 72.

[0050] When further adjustment of the atmosphere in the heating section 71 and the hydrogen-nitrogen mixing section is required, the pressure difference between the blower 1 81 and the blower 2 82 can be used to allow hydrogen to enter the annealing cooling section 72 of the heating annealing coil through the vent hole of the partition 9, or the hydrogen-nitrogen mixture can be allowed to enter the heating section 71 to meet the atmosphere requirements of different metal tubes 3. The distribution of protective gas in the heating annealing tube 2 can also be adjusted by rotating the mixing blower 79 in both directions.

[0051] The gas analyzer 10 can detect the composition of the protective gas in the heating annealing tube 2 in real time, and the controller controls the fan 1 81, fan 2 82 and mixing fan 79 to ensure the distribution of the protective gas in the heating annealing tube 2.

[0052] Open the water supply valve 76, and pure water that has been heated by the heating section 71 enters the water electrolysis cell 4 through the water supply pipe 75 to replenish the water electrolysis cell 4. Due to the high water temperature, the reaction efficiency in the water electrolysis cell 4 is improved. Pure water can be replenished to the circulating water pipe 73 in a timely manner through the water replenishment pipe 78. The radiator 8 ensures the cooling effect of the annealing cooling section 72. Nitrogen can be supplied to the mixed gas pipe 53 through the nitrogen replenishment pipe 54 to further adjust the content and distribution of the protective gas in the heating annealing tube 2, so as to make the heating annealing effect better.

[0053] Hydrogen and hydrogen-nitrogen mixture are introduced into the heating section 71 and annealing cooling section 72 of the heating and annealing coil 7 through hydrogen inlet 21 and hydrogen-nitrogen mixture inlet 22, respectively. Hydrogen reduces the oxygen in the metal tube 3 during the heating process, maintaining a reducing atmosphere and preventing oxidation of the metal tube 3 by oxygen. The hydrogen-nitrogen mixture further reduces and protects the metal tube 3 in the annealing cooling section 72, providing zoned protection for the heating and annealing processes of the metal tube 3 and improving the annealing effect of the metal tube 3.

[0054] By introducing hydrogen and hydrogen-nitrogen mixture at different pressures into both sides of the partition 9, the composition and ratio of the protective gas in the metal tube 3 during the heating and annealing cooling process can be adjusted through the vent holes, resulting in better heating and annealing effects for different metal tubes 3.

[0055] The protective gas combustion tube 6 is connected to the heating and annealing tube 2. The heating and annealing tube 2 is under positive pressure. The protective gas in the heating and annealing tube 2 is consumed by the protective gas combustion tube 6, making the heating and annealing in the heating and annealing tube 2 safer. The combustion of the protective gas provides heat to the ammonia decomposition furnace 1 51 and the ammonia decomposition furnace 2 52, effectively recovering and utilizing the protective gas. At the same time, it makes the ammonia decomposition reaction produce hydrogen-nitrogen mixed gas with high efficiency. The oxygen supply tube 42 provides oxygen to the combustion of the protective gas, making the combustion of the protective gas more complete and the production efficiency of hydrogen-nitrogen mixed gas higher.

[0056] Pure water flows inside the heating annealing coil 7. When the heating section 71 heats the metal tube 3, the pure water cools the inside of the heating annealing coil 7. The heating annealing coil 7 is protected by a protective gas to prevent oxidation, thus enhancing its durability. The heating annealing coil 7 is also equipped with an annealing cooling section 72. By introducing pure water into the annealing cooling section 72, the heated metal tube 3 is cooled by the annealing cooling section 72 as it passes through, resulting in higher cooling efficiency. The protective gas further protects the cooled metal tube 3, further improving the annealing cooling effect. The heating annealing coil 7 has multiple functions.

[0057] Hydrogen is supplied to hydrogen inlet 21 through hydrogen supply pipe 41 of electrolytic water tank, ensuring the reducing atmosphere in heating annealing tube 2; oxygen is supplied to combustion tube of protective gas through oxygen supply pipe 42, making the protective gas burn better and improving the production efficiency of hydrogen-nitrogen mixed gas in ammonia decomposition furnace; pure water after heat exchange by heating annealing coil 7 in circulating water pipe 73 is used, the pure water has a high temperature and is easy to use, thus improving the efficiency of hydrogen production.

[0058] The technical features of this invention not described can be implemented by or using existing technology, and will not be repeated here. Of course, the above description is not a limitation of this invention, and this invention is not limited to the examples above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this invention should also be within the protection scope of this invention.

Claims

1. A super audio online heating annealing device, comprising a super audio heater (1), a heating annealing coil (7) connected with the super audio heater (1), characterized in that, It also includes a heating annealing tube (2) covering the outside of the heating annealing coil (7), a protective gas generating assembly connected to the side of the heating annealing tube (2), a protective gas combustion tube (6) connected to both ends of the heating annealing tube (2), and a cooling assembly connected to the heating annealing coil (7). The protective gas combustion tube (6) is connected to the protective gas generating assembly, and a metal tube (3) is inserted inside the heating annealing coil (7). The heating annealing tube (2) is provided with a hydrogen inlet (21) and a hydrogen-nitrogen mixed gas inlet (22) on its side. The protective gas generating assembly includes a water electrolysis cell (4) connected to the cathode chamber and the hydrogen inlet (21), an ammonia decomposition furnace one (51) and an ammonia decomposition furnace two (52) connected to one end of the protective gas combustion tube (6). The exhaust pipes of the ammonia decomposition furnace one (51) and the ammonia decomposition furnace two (52) are connected to a mixed gas pipe (53), which is connected to the hydrogen-nitrogen mixed gas inlet (22). The other end of the protective gas combustion tube (6) is connected to the end of the heating annealing tube (2). An oxygen inlet (61) is provided on the side of the protective gas combustion tube (6). The anode chamber of the water electrolysis cell (4) is connected to the oxygen inlet (61) through an oxygen supply tube (42). The heating and annealing coil (7) is a hollow spiral copper tube. The heating and annealing coil (7) includes a heating section (71) and an annealing and cooling section (72) that are connected to each other. The two ends of the heating section (71) are respectively connected to the ultrasonic heater (1). The annealing cooling section (72) has an inlet at one end away from the heating section (71), and the heating section (71) has an outlet at one end away from the annealing cooling section (72). The cooling assembly includes a circulating water pipe (73) with its two ends connected to the inlet and the outlet, a circulating water pump (74) and a radiator (8) respectively installed on the circulating water pipe (73). The circulating water pipe (73) is filled with pure water. The circulating water pipe (73) is connected to the water electrolysis tank (4) through a water supply pipe (75). A water supply valve (76) is installed on the water supply pipe (75). The cathode chamber of the water electrolysis cell (4) is connected to the hydrogen inlet (21) via a hydrogen supply pipe (41). A blower (81) is installed on the hydrogen supply pipe (41), and a blower (82) is installed on the mixed gas pipe (53). A partition (9) is provided on the inner side of the heating annealing tube (2). The partition (9) is located between the hydrogen inlet (21) and the hydrogen-nitrogen mixed gas inlet (22). The partition (9) is provided with a vent hole. The heating annealing coil (7) passes through the vent hole. The heating section (71) and the annealing cooling section (72) are respectively located on both sides of the partition (9). A gas analyzer (10) is provided in the vent hole. The gas analyzer (10) is electrically connected to the first fan (81) and the second fan (82) through a controller.

2. The ultrasonic online heating annealing device according to claim 1, characterized in that, A split pipe (77) is provided between the hydrogen supply pipe (41) and the mixing gas pipe (53), and a mixing fan (79) is provided on the split pipe (77). The mixing fan (79) is electrically connected to the gas analyzer (10) through the controller.

3. The ultrasonic online heating annealing device according to claim 2, characterized in that, A water supply pipe (78) is provided on the circulating water pipe (73), and a valve is provided on the water supply pipe (78).

4. The ultrasonic online heating annealing apparatus according to claim 3, characterized in that, A nitrogen supply pipe (54) is provided on the mixing pipe (53), and a valve is provided on the nitrogen supply pipe (54).

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