Bright solid solution furnace with gas distribution piece and pipeline solid solution process

Abstract

The bright solid solution furnace comprises a furnace body, the gas distribution piece and a reducing gas source, the furnace body is provided with a feeding section, a heating section, a cooling section and a discharging section which are sequentially distributed in the first direction, the furnace body is further provided with a material channel formed from the feeding section to the discharging section, and a conveying belt is arranged in the material channel; the gas distribution piece is provided with a gas inlet and a gas outlet for conveying gas into a solid solution pipeline, and the gas distribution piece is removably arranged on the conveyor belt; and the reducing gas source is communicated with the gas inlet through a gas inlet pipe. The gas distribution piece is communicated with the reducing gas source through the gas inlet pipe, and the purity of the reducing gas in the solid solution pipeline is basically not influenced by the purity of the reducing gas in the material channel; in the bright solid solution process, oil spots on the inner wall of the solid solution pipeline generate impurities, the impurities are blown away from the inner wall of the solid solution pipeline, and the risk of carburization of the solid solution pipeline in the bright solid solution process is reduced; the invention further discloses a pipeline brightening solid solution process.

Description

Technical Field

[0001] The present invention relates to the field of bright solution furnaces, and particularly to a bright solution furnace with a gas distribution component and a pipe solution process. Background Art

[0002] Bright solution furnaces are generally used for bright heat treatment of stainless steel pipes. The bright solution process usually includes: first heating the stainless steel pipe in the heating section to eliminate internal stress in the material, and then entering the cooling section to cool it down to obtain a single austenitic steel pipe and make the surface of the steel pipe bright. During the whole bright solution process, gas protection is required for the stainless steel pipe.

[0003] However, in the existing bright solution furnaces, reducing gas is usually directly input into the heating section and the cooling section, and it is not easy to completely discharge the air inside the long and thin stainless steel pipe, which is not conducive to gas protection of the inner wall of the stainless steel pipe.

[0004] Chinese invention patent with application publication number CN118703762A discloses a solution heat treatment device and method for small-diameter seamless pipes. This patent sets up a pipe air extraction mechanism and replaces the air inside the pipe with hydrogen in the heating area through the pressure difference inside the pipe, thereby preventing oxidation of the pipe during heating and improving product quality.

[0005] However, in the technical solution disclosed in the Chinese invention patent with application publication number CN118703762A, when the air inside the seamless pipe is replaced with hydrogen in the heating area, the dust in the heating area is likely to enter the stainless steel pipe along with the hydrogen and adhere to the inner wall of the steel pipe to form dirt, resulting in uneven local temperature distribution on the inner wall of the pipe, uneven bright solution effect on the local inner wall, and even forming defects; in addition, one end of the seamless pipe is matched with a pipe plug. When the seamless stainless steel pipe is processed in the heating section, the hydrogen inside the stainless steel pipe is basically stationary. The iron oxide on the inner wall of the steel pipe reacts with hydrogen to generate water vapor, and this part of the water vapor is not easy to discharge and will pollute the stainless steel pipe; moreover, the oil spots on the inner wall of the stainless steel pipe are carbonized to generate impurities such as coke, and these impurities stay on the inner wall of the steel pipe, which will increase the carburization risk of the stainless steel pipe during the bright solution process.

[0006] Therefore, it is necessary to improve the existing bright solution furnace. Summary of the Invention

[0007] Aiming at the above-mentioned existing technology, one of the purposes of the present invention is to provide a bright solution furnace that provides flowing reducing gas protection for the inner wall of a stainless steel pipe.

[0008] To solve the above technical problems, the technical solution of the present invention is as follows: A bright solution furnace with a gas distribution component, comprising: The furnace body has a feeding section, a heating section, a cooling section, and a discharging section that are sequentially distributed in a first direction, and also has a material channel that opens from the feeding section to the discharging section. The air distribution member is provided with an air inlet and an air outlet for delivering gas into the solution heat treatment pipe. The reducing gas source is communicated with the air inlet through an inlet pipe. A conveyor belt is arranged in the material channel, and the air distribution member is removably arranged on the conveyor belt.

[0009] Preferably, in order to facilitate the fixation between the air distribution member and the solution heat treatment pipe, the air distribution member further includes an exhaust branch pipe that is inserted into the solution heat treatment pipe, and the air outlet is the branch pipe orifice of the exhaust branch pipe.

[0010] Preferably, the exhaust branch pipe includes a fixed pipe and a movable pipe coaxially arranged inside the fixed pipe. One end of the movable pipe is an air inlet end, the other end is closed and fixedly communicated with a spray head. The orientation of the spray head forms an angle with both the radial direction and the axial direction of the movable pipe, and the gas outlet end of the spray head is far from the air inlet end of the movable pipe and faces the inner wall of the solution heat treatment pipe. A clamped rod is coaxially and fixedly arranged inside the movable pipe. The clamped rod protrudes out of the air inlet end. The fixed pipe is provided with a clamping rod that slides along its radial direction. The clamping rod penetrates through the inner wall of the fixed pipe. The movement path of the clamping rod includes a first position and a second position. In the first position, one end of the clamping rod is in pressure contact with the inner wall of the solution heat treatment pipe, and the other end is in pressure contact with the clamped rod. In the second position, there is a gap or non-pressure contact between the clamping rod and the inner wall of the solution heat treatment pipe.

[0011] Preferably, the exhaust direction of the air outlet is opposite to the first direction. The inlet pipe extends from inside the material channel to outside the furnace body, and the inlet pipe is located on one side of the air distribution member along the first direction.

[0012] Preferably, the exhaust end of the inlet pipe is connected to the air inlet. The bright solution heat treatment furnace further includes a towing cable. The first end of the towing cable is fixedly connected to the exhaust end, and the second end extends from the material channel to outside the furnace body in the opposite direction of the first direction.

[0013] Preferably, the second end is fixedly connected to the first drum of the first double-direction winch; and / or the pipe body of the inlet pipe is fixedly connected to the second drum of the second double-direction winch.

[0014] Preferably, it further includes a controller. A proximity sensor is arranged in the cooling section, and a gas source switch is arranged on the reducing gas source. The proximity sensor is configured to detect the position of the air distribution member, and the controller is electrically connected to the proximity sensor, the gas source switch, the first double-direction winch, and / or the second double-direction winch.

[0015] The second object of the present invention is to provide a pipeline bright solution heat treatment process, which includes the following steps: S1: Start the solution heat treatment furnace and continuously introduce a reducing gas into the material channel; S2: Place the solution heat treatment pipeline and the gas distribution component connected to the inlet pipe on the conveyor belt of the feeding section, and align the exhaust port of the gas distribution component with the pipe orifice of the solution heat treatment pipeline; S3: While the conveyor belt sequentially conveys the solution heat treatment pipeline from the feeding section to the heating section, the cooling section and the discharging section, the gas distribution component continuously inputs a reducing gas into the solution heat treatment pipeline; Preferably, step S2 further includes S2-0: S2-0: Fix the towing cable to the exhaust end of the inlet pipe; After step S3, it further includes: S4-1: After the solution heat treatment pipeline is discharged from the cooling section, disconnect the inlet pipe from the gas distribution component; S4-2: Use the towing cable to pull the exhaust end out of the furnace body on the opposite side in the first direction, and apply the inlet pipe fixed with the towing cable to the subsequent solution heat treatment pipelines.

[0016] Preferably, before the gas distribution component reaches the position where it triggers the proximity sensor, turn on the controller and the proximity sensor.

[0017] The advantages and beneficial effects of the present invention are as follows: The gas distribution component is connected to the reducing gas source through the inlet pipe, so the purity of the reducing gas in the solution heat treatment pipeline is basically not affected by the purity of the reducing gas in the material channel; During the bright solution heat treatment process, the oil spots on the inner wall of the solution heat treatment pipeline decompose to generate impurities, and the impurities are blown away from the inner wall of the solution heat treatment pipeline, reducing the risk of carburization of the solution heat treatment pipeline during the bright solution heat treatment process; When the solution heat treatment pipeline is being processed in the heating section, the reducing gas in the stainless steel pipe keeps flowing. When the reducing gas is hydrogen and the solution heat treatment pipeline is a stainless steel pipe, the iron oxide on the inner wall of the solution heat treatment pipeline reacts with hydrogen to generate water vapor, and this part of the water vapor is timely discharged from the stainless steel pipe along with the hydrogen, avoiding reducing the brightening effect of the solution heat treatment pipeline; The solution heat treatment pipelines produced by this bright solution heat treatment furnace have a uniform overall bright solution heat treatment effect, and there is no carburization phenomenon in the solution heat treatment pipelines. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of a bright solution heat treatment furnace with a gas distribution component; Figure 2 is Figure 1 an enlarged view of part A of Figure 3 is a schematic structural diagram of the gas distribution component provided with an exhaust port; Figure 4 is a schematic structural diagram of the gas distribution component provided with an exhaust branch pipe; Figure 5Yes Figure 4 Partial enlarged view of part B; Figure 6 Schematic diagram of the gas distribution component and the solution annealing pipeline placed on the conveyor belt; Figure 7 Schematic diagram of the structure with a flexible heat insulation curtain arranged in the heating section; Figure 8 Schematic diagram of the insertion connection between the exhaust branch pipe and the solution annealing pipeline; Figure 9 Yes Figure 8 Cross-sectional view; Figure 10 Yes Figure 8 Explosion schematic diagram; Figure 11 Yes Figure 10 Cross-sectional view; Figure 12 Yes Figure 10 Partial enlarged view of part C; Figure 13 Yes Figure 10 Partial enlarged view of part D; Figure 14 Schematic diagram of the connection between the fixed pipe and the clamping rod; Figure 15 Yes Figure 14 Partial enlarged view of part E; Figure 16 Schematic diagram of the connection between the traction cable and the intake pipe; Figure 17 Schematic diagram of the solution annealing pipeline placed at the middle position in the width direction of the working surface of the conveyor belt; Figure 18 Schematic diagram of the connection between the first double-direction winch and the traction cable; Figure 19 Schematic diagram of the connection between the second double-direction winch and the intake pipe; Figure 20 Schematic cross-sectional view of the proximity sensor installed in the cooling section; In the figure: 1. Feeding section; 2. Heating section; 3. Cooling section; 4. Discharging section; 5. Conveyor belt; 6. Gas distribution component; 601. Exhaust port; 7. Intake port; 8. Intake pipe; 9. Exhaust branch pipe; 901. Fixed pipe; 902. Movable pipe; 9021. Intake end; 9022. Sprinkler head; 90221. Outlet end; 10. Solution annealing pipeline; 1001. First pipe port; 1002. Second pipe port; 11. Clamped rod; 12. Clamping rod; 13. Traction cable; 1301. First end; 1302. Second end; 14. First double-direction winch; 15. Second double-direction winch; 16. Proximity sensor; 17. Bearing; 18. Tail gas collection device; 19. Heat insulation curtain. Detailed implementation mode

[0019] The following further describes the specific embodiments of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and cannot be used to limit the protection scope of the present invention.

[0020] Embodiment 1

[0021] As Figures 1 - 6 shown, the bright solution heat treatment furnace with a gas distribution member according to Embodiment 1 of the present invention includes a furnace body, a gas distribution member 6, and a reducing gas source. The furnace body has a feeding section 1, a heating section 2, a cooling section 3, and a discharging section 4 that are sequentially distributed in a first direction. The furnace body also has a material channel that is opened from the feeding section 1 to the discharging section 4, and a conveyor belt 5 is arranged in the material channel; the gas distribution member 6 is provided with an air inlet 7 and an air outlet 601 for delivering gas into the solution heat treatment pipe 10, and the gas distribution member 6 is removably arranged on the conveyor belt 5; the reducing gas source is communicated with the air inlet 7 through an air inlet pipe 8. Tail gas collection devices 18 are arranged at the feeding section 1 and the discharging section 4.

[0022] Preferably, the gas distribution member 6 has a plurality of air outlets 601. At this time, the gas distribution member 6 can simultaneously input reducing gas into multiple solution heat treatment pipes 10.

[0023] Specifically, the core parts of the bright solution heat treatment furnace are the heating section 2 and the cooling section 3. The solution heat treatment pipes 10 are subjected to bright solution heat treatment in the material channels of the heating section 2 and the cooling section 3; the length of the working surface of the conveyor belt 5 in the first direction is much greater than the length of the solution heat treatment pipes 10, and the conveyor belt 5 always remains in an operating state. There are several batches of solution heat treatment pipes 10 in the heating section 2 at the same moment. As Figure 7 shown, the heating section 2 usually has a heating-up area and a heat preservation area that are sequentially distributed in the first direction. The temperature of the heat preservation area can reach above 1000 °C, and flexible heat insulation curtains 19 are arranged at the interval between the temperature zones and the inlet of the heating section. The flexible heat insulation curtain 19 has a hanging top edge and a bottom edge that fits the conveyor belt. When the solution heat treatment pipe 10 passes through the flexible heat insulation curtain 19, the heat insulation curtain 19 is lifted up, and the heat insulation curtain 19 falls on the solution heat treatment pipe 10 and / or the conveyor belt 5 under its own gravity and fits the solution heat treatment pipe 10 and / or the conveyor belt 5. A slightly positive pressure state of a protective gas such as hydrogen needs to be maintained in the material channels of the heating section 2 and the cooling section 3 to prevent oxygen from entering and avoid oxidation of the solution heat treatment pipes 10. The cooperation of the heat insulation curtain 19 and the slightly positive pressure of the protective gas such as hydrogen in the material channel can play a role in isolating the outside air.

[0024] When the solution annealing pipe 10 passes through the entrance of the heating section 2, it will lift the heat insulation curtain 19. During the falling of the heat insulation curtain 19, some external air will enter the heating section 2. This part of the air reacts with the high-temperature solution annealing pipe 10 in the heating section 2, causing the pipe to oxidize. When the solution annealing pipe 10 enters the heating section 2, there is air in the pipe, and the air in the pipe will also oxidize the high-temperature solution annealing pipe 10 in the heating section 2. However, when hydrogen is used as the reducing gas and the solution annealing pipe 10 is a stainless steel pipe, in the heating section 2, hydrogen can reduce the iron oxide on the stainless steel pipe to elemental iron. However, the density of hydrogen is lower than that of air, and the solution annealing pipe 10 is usually located at the bottom of the material channel, that is, the purity of hydrogen at the bottom of the channel is generally low. It is difficult to fully reduce the iron oxide on the stainless steel pipe by hydrogen.

[0025] The reducing gas source is connected to the air inlet port 7 of the air distribution member 6 through the air inlet pipe 8, then the reducing gas is continuously input into the solution annealing pipe 10, and the pipe is filled with a reducing gas with a higher purity. In the heating section 2, some oil spots on the inner wall of the solution annealing pipe 10 come into contact with the residual oxygen in the material channel, generating carbon dioxide and water vapor; the remaining oil spots generate coke and other by-products; the products of the high-temperature reaction of these oil spots are blown away from the inner wall of the solution annealing pipe 10 by the fast-flowing reducing gas stream, reducing the risk of discoloration and carburization of the solution annealing pipe 10 during bright solution annealing.

[0026] As Figures 4 - 6 shown, the air distribution member 6 further includes an exhaust branch pipe 9 inserted into the solution annealing pipe 10, and the exhaust port 601 is the branch pipe orifice of the exhaust branch pipe 9.

[0027] The pipe orifice of the solution annealing pipe 10 inserted into the exhaust branch pipe 9 is the first pipe orifice 1001, and the other pipe orifice of the solution annealing pipe 10 is the second pipe orifice 1002. Then at this time, only the second pipe orifice 1002 of the solution annealing pipe 10 discharges the reducing gas to the outside of the pipe.

[0028] After the bright solution annealing furnace is used for a long time, dust is likely to appear inside the material channel. This part of the dust adheres to the solution annealing pipe 10 as it flows with the reducing gas in the material channel, forming dirt, resulting in uneven temperature distribution of the pipe, uneven bright solution annealing effect of the local pipe, and even forming defects; while the solution annealing pipe 10 is inserted into the exhaust branch pipe 9, the reducing gas is continuously input into the solution annealing pipe 10 through the exhaust branch pipe 9 and discharged from the solution annealing pipe 10, preventing the dust in the material channel from entering the inside of the solution annealing pipe 10, completely avoiding the dust from adhering to the inside of the solution annealing pipe 10 to form dirt, which is beneficial to reducing the probability of introducing new pipe internal defects into the solution annealing pipe 10, and thus improving the pipe qualification rate. When the stainless steel pipe is used as a corrosive gas transmission pipe, the control of pipe internal defects is particularly important.

[0029] Further, the exhaust direction of the exhaust port 601 is opposite to the first direction, the air inlet pipe 8 extends from inside the material channel to outside the furnace body, and the air inlet pipe 8 is located on one side of the air distribution member 6 along the first direction.

[0030] Specifically, to prevent air in the solution annealing pipe 10 from entering the heating section 2, the gas distribution component 6 and the solution annealing pipe 10 must be assembled and connected before the solution annealing pipe 10 enters the heating section 2, and reducing gas is introduced into the solution annealing pipe 10 to displace the air. After the displacement is completed, the reducing gas is continuously introduced; after the solution annealing pipe 10 enters the heating section 2, the exhaust direction of the exhaust port 601 is opposite to the first direction. That is, the flow direction of the reducing gas in the solution annealing pipe 10 is the opposite direction of the first direction. The heat preservation area of the heating section 2 is located in the first direction of the temperature rising area, that is, the temperature distribution in the heating section 2 gradually increases along the first direction. At this time, the flow of the reducing gas in the solution annealing pipe 10 blows the reducing gas outside the pipe at the higher temperature to the lower temperature, basically not affecting the temperature distribution in the heating section 2, and avoiding the appearance of bright solution annealing defects locally on the solution annealing pipe 10.

[0031] When the solution annealing pipe 10 does not enter the heating section 2, the reducing gas in the solution annealing pipe 10 is heated successively through the heat preservation area and the temperature rising area, and then input into the solution annealing pipe 10. Taking hydrogen as an example, at this time, the temperature of the hydrogen input into the gas distribution component 6 is high, and the high-temperature hydrogen can react with the oil stain or iron oxide in the stainless steel pipe, and then discharge more impurities or impurity gases outside the heating section 2, reducing the influence of the impurity gases on the atmosphere in the heating section 2; before the solution annealing pipe 10 exits the heating section, the pipe itself is in a high-temperature state in the heat preservation area. Although the temperature of the hydrogen input into the gas distribution component 6 is relatively low, it can still react with the oil stain or iron oxide in the stainless steel pipe under the influence of the pipe temperature, especially when the inner diameter and wall thickness of the pipe are small. Therefore, on the basis of the predetermined pipe conveying speed, the preferred connection mode of the inlet pipe 8 and the gas distribution component 6 can effectively extend the reaction time of hydrogen with the impurities on the inner wall of the pipe, thereby reducing the probability of defects on the inner wall of the solution annealing pipe 10 and improving the cleanliness of the inner wall of the pipe. In addition, when the solution annealing pipe 10 is cooled in the cooling section 3, the gas in the pipe with a lower temperature can accelerate the heat dissipation speed of the solution annealing pipe 10, meeting the production requirements for the rapid cooling of the solution annealing pipe 10; further, the flow rate of the reducing gas is adjusted so that the cooling efficiency of the solution annealing pipe 10 is closer to the preset change trend.

[0032] Specifically, the working process of this embodiment is as follows: After the bright solution annealing furnace is started, the gas distribution component 6 and the solution annealing pipe 10 are relatively fixedly placed on the conveyor belt 5, and the exhaust port 601 of the gas distribution component 6 is aligned with the pipe orifice of the solution annealing pipe 10; before the solution annealing pipe 10 enters the heating section 2, the reducing gas source is turned on and the reducing gas is continuously introduced into the solution annealing pipe 10.

[0033] The solution annealing pipe 10 enters the temperature rising area and the heat preservation area of the heating section 2 for heating under the transportation of the conveyor belt 5.

[0034] When the solution annealing pipe 10 is in the cooling section 3, the flow rate of the reducing gas in the inlet pipe 6 is adjusted according to the bright solution annealing process, and then the cooling speed of the solution annealing pipe 10 is adjusted.

[0035] During this working process, to ensure that the exhaust port 601 of the air distribution member 6 is aligned with the pipe orifice of the solution heat treatment pipe 10, a support for the solution heat treatment pipe 10 can be placed on the conveyor belt 5, and the relative positions of the air distribution member 6 and the solution heat treatment pipe 10 can be fixed by using a tooling structure.

[0036] Embodiment 2

[0037] As Figures 8 - 15 shown, the bright solution heat treatment furnace with an air distribution member in Embodiment 2 is based on Embodiment 1, and the difference lies in that the exhaust branch pipe 9 includes a fixed pipe 901 and a movable pipe 902 coaxially arranged inside the fixed pipe 901. One end of the movable pipe 902 is an intake end 9021, and the other end is closed and fixedly connected with a spray head 9022. The orientation of the spray head 9022 forms an angle with both the radial direction and the axial direction of the movable pipe 902, and the gas outlet end 90221 of the spray head 9022 is far from the intake end 9021 of the movable pipe 902 and faces the inner wall of the solution heat treatment pipe 10; A clamped rod 11 is coaxially fixed inside the movable pipe 902. The clamped rod 11 protrudes out of the intake end 9021. A clamping rod 12 is slidably arranged along the radial direction of the fixed pipe 901. The clamping rod 12 penetrates through the inner wall of the fixed pipe 901. The movement path of the clamping rod 12 includes a first position and a second position. In the first position, one end of the clamping rod 12 is in pressure contact with the inner wall of the solution heat treatment pipe 10, and the other end is in pressure contact with the clamped rod 11. In the second position, there is a gap or non-pressure contact between the clamping rod 12 and the inner wall of the solution heat treatment pipe 10.

[0038] Specifically, the outer diameter of the movable pipe 902 is smaller than the inner diameter of the fixed pipe 901. The movable pipe 902 and the fixed pipe 901 are connected by a bearing 17. The inner ring of the bearing 17 is fixedly connected to the outer wall of the movable pipe 902. A track for the axial movement of the bearing 17 is provided on the inner wall of the movable pipe 902, that is, the inner wall of the movable pipe 902 is slidably connected to the bearing 17. Then, the movable pipe 902 can slide axially along the inside of the fixed pipe 901 and rotate around the axis of the fixed pipe 901 through the bearing 17.

[0039] Ten solution pipes 10 are sleeved outside the fixed pipe 901 and restrict the clamping rod 12 from moving radially along the fixed pipe 901. When no reducing gas is introduced into the fixed pipe 901, the clamping rod 12 is located at the second position of the moving path, and there is a gap or non-pressure contact between the clamping rod 12 and the inner wall of the solution pipe 10. After the reducing gas is introduced into the fixed pipe 901, the reducing gas enters the movable pipe 902 from the fixed pipe 901 and finally flows out from the nozzle 9022; the orientation of the nozzle 9022 forms an angle with both the radial and axial directions of the movable pipe 902, and the gas outlet end 90221 of the nozzle 9022 is far from the gas inlet end 9021 of the movable pipe 902 and faces the inner wall of the solution pipe 10. At this time, the reducing gas ejected from the nozzle 9022 gives a thrust to the movable pipe 902, and the movable pipe 902 slides in the direction of the gas inlet end 9021 of the movable pipe 902 and rotates around its own axis.

[0040] The movable pipe 902 slides in the direction of the gas inlet end 9021 of the movable pipe 902 until the clamping rod 11 is in pressure contact with one end of the clamping rod 12. Under the action of the thrust of the reducing gas, the clamping rod 11 and the clamping rod 12 continuously maintain the contact state. At this time, the clamping rod 12 is located at the first position of the moving path, that is, one end of the clamping rod 12 is in pressure contact with the inner wall of the solution pipe 10, and the other end is in pressure contact with the clamping rod 11, and the relative position of the solution pipe 10 and the exhaust branch pipe 9 is fixed.

[0041] When the movable pipe 902 rotates around its own axis, the gas sprayed into the solution pipe 10 by the nozzle 9022 is discharged along the inner wall of the solution pipe 10 in a spiral shape towards the gas outlet direction of the solution pipe 10, and the contact between the inner wall of the solution pipe 10 and the reducing gas is more uniform and sufficient.

[0042] To make the clamping rod 12 move from the first position of the moving path to the first position so that the solution pipe 10 is separated from the exhaust branch pipe 9. Stop introducing the reducing gas into the fixed pipe 901. The clamping rod 11 is subjected to the vertical pressure brought by the gravity of the clamping rod 12 above the clamping rod 11, and the pressure contact state between the clamping rod 11 and the clamping rod 12 is released. A gap appears between the clamping rod 12 and the inner wall of the solution pipe 10 or the pressure contact is eliminated, and the solution pipe 10 is separated from the exhaust branch pipe 9.

[0043] Embodiment 3

[0044] As Figure 16 shown, the bright solution furnace with a gas distribution member in Embodiment 3 is based on Embodiment 1, the difference being that the exhaust end of the intake pipe 8 is connected to the intake port 7; the bright solution furnace further includes a towing cable 13; the first end 1301 of the towing cable 13 is fixedly connected to the exhaust end, and the second end 1302 extends from the material channel to outside the furnace body in the opposite direction of the first direction.

[0045] Specifically, the solution annealing pipe 10, the inlet pipe 8, and the towing cable 13 are all placed on the working surface of the conveyor belt 5. The reducing gas source is set outside the furnace and close to the blanking section 4. Before the solution annealing pipe 10 is connected to the air distribution member 6, the inlet pipe 8 needs to be pre-passed through the material channel; at this time, the inlet pipe 8 extends from the material channel to the outside of the furnace body. One end of the inlet pipe 8 outside the furnace body is connected to the reducing gas source, and one end of the inlet pipe 8 in the material channel extends to the feeding section 1 for convenient connection with the air distribution member 6.

[0046] After the bright solution annealing treatment of the solution annealing pipe 10 is completed, the inlet pipe 8 is towed along the reverse direction of the first direction by the towing cable 13, so that the reset of the inlet pipe 8 can be completed and it is convenient to connect with the air distribution member 6.

[0047] Preferably, as Figure 17 shown, the solution annealing pipe 10 is placed at the middle position in the width direction of the working surface of the conveyor belt 5. One side of the pipe is the common placement position of the inlet pipe 8 and the towing cable 13. At this time, the inlet pipe 8 and the towing cable 13 do not contact the solution annealing pipe 10, avoiding friction between the towing cable 13 and / or the inlet pipe 8 and the solution annealing pipe 10 when the towing cable 13 pulls the inlet pipe 8, and preventing the solution annealing pipe 10 from being scratched; it also avoids the stacking of the inlet pipe 8 and / or the towing cable 13 with the solution annealing pipe 10 resulting in uneven local heating of the solution annealing pipe 10 and avoiding non-compliance of the local bright solution annealing treatment of the pipe.

[0048] Embodiment 4

[0049] As Figure 18 and Figure 19 shown, the bright solution annealing furnace with an air distribution member in Embodiment 4 is based on Embodiment 3, the difference being that the second end 1302 is fixedly connected to the first drum of the first double-direction winch 14; and / or the pipe body of the inlet pipe 8 is fixedly connected to the second drum of the second double-direction winch 15.

[0050] Specifically, at this time, when the operator starts the first double-direction winch 14, the towing of the inlet pipe 8 along the reverse direction of the first direction can be realized, which speeds up the reset speed of the inlet pipe 8, improves the bright solution annealing efficiency of the solution annealing pipe 10, and also saves manpower. When the operator starts the second double-direction winch 15, the convergence of the inlet pipe 8 can be realized, avoiding the winding or accumulation of the inlet pipe 8 outside the furnace; in addition, when the first double-direction winch 14 and the second double-direction winch 15 are used together, the first double-direction winch 14 and the second double-direction winch 15 pull and retract in an orderly manner, and it is not easy to wind when there are multiple inlet pipes 8 and towing cables 13 in the material channel.

[0051] Embodiment 5

[0052] As Figure 20As shown, the bright solution annealing furnace with a gas distribution component in Embodiment 5 is based on Embodiment 4, and the difference is that it further includes a controller. A proximity sensor 16 is provided in the cooling section 3, and a gas source switch is provided for the reducing gas source. The proximity sensor 16 is configured to detect the position of the gas distribution component 6, and the controller is electrically connected to the proximity sensor 16, the gas source switch, the first double-direction winch 14, and / or the second double-direction winch 15.

[0053] Specifically, after the proximity sensor 16 is triggered, the controller receives the signal from the proximity sensor 16, closes the gas source switch, and starts the first double-direction winch 14 and / or the second double-direction winch 15. At this time, the inlet pipe 8 is reset. After the inlet pipe 8 is completely reset, the first double-direction winch 14 is closed.

[0054] After the solution annealing pipe 10 is cooled, the supply of reducing gas in the solution annealing pipe 10 can be closed, which is beneficial to saving reducing gas; and the controller timely controls the gas source switch to close the reducing gas source, preventing the operator from forgetting to close the reducing gas source, and thus avoiding the leakage of reducing gas into the workshop and causing danger.

[0055] The process of pipe bright solution annealing using the equipment in the embodiment includes the following steps: S1: Start the solution annealing furnace and continuously introduce reducing gas into the material channel; S2: Place the solution annealing pipe 10 and the gas distribution component 6 connected to the inlet pipe 8 on the conveyor belt 5 in the feeding section 1, and align the exhaust port 601 of the gas distribution component 6 with the pipe orifice of the solution annealing pipe 10; S3: While the conveyor belt 5 sequentially conveys the solution annealing pipe 10 from the feeding section 1 to the heating section 2, the cooling section 3, and the discharging section 4, the gas distribution component 6 continuously inputs reducing gas into the solution annealing pipe 10.

[0056] Further, step S2 further includes S2-0: S2-0: Fix the towing cable 13 to the exhaust end of the inlet pipe 8; After step S3, it further includes: S4-1: After the solution annealing pipe 10 exits from the cooling section 3, disconnect the inlet pipe 8 from the gas distribution component 6; S4-2: Use the towing cable 13 to pull the exhaust end out of the furnace body on the opposite side in the first direction, and apply the inlet pipe 8 fixed with the towing cable 13 to the subsequent solution annealing pipe 10.

[0057] Specifically, the length of the conveyor belt working surface in the first direction is much larger than the length of the solution annealing pipe 10. There are several batches of solution annealing pipes 10 in the heating section 2 at the same time. After pulling the inlet pipe 8 back to the feeding section through the towing cable 13, the inlet pipe 8 can be quickly utilized for the feeding pipe in the feeding section 1.

[0058] In a preferred embodiment, before the air distribution member 6 reaches the position where it triggers the proximity sensor 16, the controller and the proximity sensor 16 are turned on.

[0059] Specifically, the position of the air distribution member 6 is detected by the proximity sensor 16, and the position of the solution annealing pipe 10 is obtained through the position of the air distribution member 6. When the solution annealing pipe 10 is completely separated from the cooling section 3, the input of the reducing gas into the solution annealing pipe 10 is stopped; after the solution annealing pipe 10 is completely separated from the cooling section 3, the first double-direction winch 14 and / or the second double-direction winch 15 are started under the control of the controller. First, the second double-direction winch 15 is used to drive the air inlet pipe 8 away from the air distribution member 6, and then the first double-direction winch 14 retracts the towing cable 13 in the opposite direction of the first direction, and the second double-direction winch 15 pays out the air inlet pipe 8 until the air inlet pipe 8 is retracted to the feeding section 1 of the conveyor belt 5.

[0060] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A bright solution heat treatment furnace with a gas distribution component, characterized in that, Comprising: A furnace body having a feeding section, a heating section, a cooling section, and a discharging section sequentially distributed in a first direction, and further having a material channel opened from the feeding section to the discharging section; A gas distribution member having an air inlet and an exhaust port for delivering gas into the solution annealing pipe; A reducing gas source communicated with the air inlet through an inlet pipe; A conveyor belt is disposed in the material channel, and the gas distribution member is removably disposed on the conveyor belt.

2. The bright solution furnace with an air distribution component according to claim 1, wherein, The gas distribution member further includes an exhaust branch pipe inserted into the solution annealing pipe, and the exhaust port is the branch pipe orifice of the exhaust branch pipe.

3. The bright solution heat treatment furnace with a gas distribution member according to claim 2, wherein, The exhaust branch pipe includes a fixed pipe and a movable pipe coaxially disposed inside the fixed pipe. One end of the movable pipe is an air inlet end, the other end is closed and fixedly communicated with a spray head. The orientation of the spray head forms an angle with both the radial direction and the axial direction of the movable pipe, and the gas outlet end of the spray head is far from the air inlet end of the movable pipe and faces the inner wall of the solution annealing pipe; A clamping rod is coaxially and fixedly disposed inside the movable pipe, and the clamping rod protrudes out of the air inlet end. The fixed pipe is slidably provided with a clamping rod along its radial direction. The clamping rod penetrates through the inner wall of the fixed pipe. The moving path of the clamping rod includes a first position and a second position. In the first position, one end of the clamping rod is in pressure contact with the inner wall of the solution annealing pipe, and the other end is in pressure contact with the clamping rod. In the second position, there is a gap or non-pressure contact between the clamping rod and the inner wall of the solution annealing pipe.

4. The bright solution heat treatment furnace with a gas distribution member according to claim 1, characterized in that, The exhaust direction of the exhaust port is opposite to the first direction. The inlet pipe extends from inside the material channel to outside the furnace body, and the inlet pipe is located on one side of the gas distribution member along the first direction.

5. The bright solution heat treatment furnace with a gas distribution member according to claim 1, characterized in that, The exhaust end of the inlet pipe is connected to the air inlet port; the bright solution annealing furnace further includes a towing cable; the first end of the towing cable is fixedly connected to the exhaust end, and the second end extends from the material channel to outside the furnace body in the opposite direction of the first direction.

6. The bright solution heat treatment furnace with a gas distribution member according to claim 5, characterized in that, The second end is fixedly connected to the first drum of the first double-direction winch; and / or the pipe body of the inlet pipe is fixedly connected to the second drum of the second double-direction winch.

7. The bright solution heat treatment furnace with a gas distribution member according to claim 6, characterized in that, It further includes a controller. A proximity sensor is disposed in the cooling section, and a gas source switch is disposed on the reducing gas source. The proximity sensor is configured to detect the position of the gas distribution member, and the controller is electrically connected to the proximity sensor, the gas source switch, the first double-direction winch, and / or the second double-direction winch.

8. A bright solution heat treatment process for pipelines, characterized in that, Based on the solution annealing furnace with a gas distribution member according to any one of claims 1 to 7, comprising the following steps: S1: Start the solution annealing furnace and continuously introduce reducing gas into the material channel; S2: Place the solution annealing pipe and the gas distribution member connected to the inlet pipe on the conveyor belt in the feeding section, and align the exhaust port of the gas distribution member with the pipe orifice of the solution annealing pipe; S3: While the conveyor belt sequentially conveys the solution annealing pipe from the feeding section to the heating section, the cooling section, and the discharging section, the gas distribution member continuously inputs reducing gas into the solution annealing pipe.

9. The pipeline bright solution heat treatment process according to claim 8, characterized in that, Step S2 further includes S2-0: S2-0: Fix the towing cable to the exhaust end of the inlet pipe; After step S3, it further includes: S4-1: After the solution annealing pipe is discharged from the cooling section, disconnect the inlet pipe from the gas distribution member; S4-2: Use the towing cable to pull the exhaust end out of the furnace body on the side opposite to the first direction, and apply the inlet pipe fixed with the towing cable to the subsequent solution annealing pipe.

10. The pipeline bright solution heat treatment process according to claim 8, characterized in that, Before the air distribution component reaches the position where it triggers the proximity sensor, turn on the controller and the proximity sensor.

Images