A high-efficiency and energy-saving industrial furnace tube heat treatment equipment

Abstract

This utility model relates to the field of furnace tube processing technology, and in particular to a high-efficiency and energy-saving industrial furnace tube heat processing equipment. It includes a support base, on which a heating furnace chamber is fixedly connected. A burner is installed on the inner wall of the heating furnace chamber, and an outlet is opened at the top of the furnace chamber. The outlet is connected to a primary recovery furnace via a guide pipe, and a gas collector is fixedly connected to one end of the guide pipe near the outlet. During heat processing of the furnace tube, the high-temperature waste gas generated by the burner flows in the primary recovery furnace. An axial flow fan drives the air to flow in the opposite direction, and the guide fins increase the contact area and improve heat exchange efficiency. The secondary recovery furnace uses guide plates and guide ridges to increase the length of the waste gas flow path and the degree of turbulence, extending the heat exchange time. The tertiary recovery furnace exchanges heat with cooling water through multiple heat exchange tubes. This tiered waste heat recovery design improves waste heat utilization, reduces the overall energy consumption during furnace tube heat processing, and achieves high efficiency and energy saving in furnace tube heat processing.

Description

Technical Field

[0001] This utility model relates to the field of furnace tube processing technology, and in particular to a high-efficiency and energy-saving industrial furnace tube heat processing equipment. Background Technology

[0002] Furnace tubes, also known as industrial furnace tubes, are a type of steel pipe. Industrial furnace tubes are generally made of seamless steel, so industrial furnace tubes also belong to the category of seamless steel pipes. However, due to the requirements of the operating environment of industrial furnace tubes, the selection of materials is more stringent, and industrial furnace tubes usually need to undergo heat treatment. During the heat treatment process of industrial furnace tubes, their heating efficiency and energy utilization rate are the core indicators for measuring equipment performance.

[0003] In the existing process of heat treatment of industrial furnace tubes, the high-temperature exhaust gas generated by the combustion heating of traditional industrial furnaces is usually discharged through simple pipes or single-stage heat exchange, resulting in a large amount of sensible heat not being effectively utilized. This creates a contradiction of "excessive heat exchange in the high-temperature section and heat waste in the low-temperature section". Some equipment attempts to add waste heat boilers at the chimney, but the unstable exhaust gas temperature easily leads to turbulent flow, resulting in a significant reduction in boiler efficiency. At the same time, traditional exhaust gas channels are mostly straight pipes, with high and uneven exhaust gas flow resistance, limited contact area between exhaust gas and medium, and short flow path, resulting in insufficient heat exchange and low heat exchange efficiency, thus consuming a large amount of energy. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-efficiency and energy-saving industrial furnace tube heat treatment equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-efficiency and energy-saving industrial furnace tube heat treatment equipment includes a support base, a heating furnace chamber fixedly connected to the support base, a burner installed on the inner wall of the heating furnace chamber, and an air outlet opened at the top of the heating furnace chamber.

[0007] The gas outlet is connected to a primary recovery furnace via a guide pipe. A gas collecting hood is fixedly connected to one end of the guide pipe near the gas outlet. A secondary recovery box is connected to the end of the primary recovery furnace via a conical diffuser. A connecting recovery pipe is fixedly connected to one end of the secondary recovery box. A tertiary recovery furnace is fixedly connected to the end of the connecting recovery pipe.

[0008] Preferably, an L-shaped support plate is fixedly connected to one side of the support base, a transmission belt is provided inside the heating furnace, and transmission rollers are provided at both ends of the transmission belt. A drive motor is provided on one side of the inner wall of the L-shaped support plate, and the transmission roller located on the left side of the transmission belt is connected to the output end of the drive motor.

[0009] Preferably, a second drive motor is provided on one side of the L-shaped support plate, the output end of the second drive motor passes through the L-shaped support plate and is connected to a telescopic rod, and the end of the telescopic rod is fixedly connected to a furnace tube bushing.

[0010] Preferably, a lower fixed recess is fixedly connected to the transmission belt, and an upper fixed recess is provided above the lower fixed recess. Both the upper and lower fixed recesses are provided with a plurality of positioning holes, and a positioning shaft is provided in the positioning holes. An arc-shaped groove is provided on the opposite side of the upper and lower fixed recesses, and the furnace tube to be processed is provided in the arc-shaped groove.

[0011] Preferably, the primary recycling furnace is provided with guide fins inside, and an axial flow fan is provided on one side of the inner wall of the primary recycling furnace.

[0012] Preferably, a guide plate is fixedly connected inside the secondary recycling bin, and several guide ridges are provided on the inner wall of the secondary recycling bin, the guide ridges being distributed in a corrugated shape on the inner wall of the secondary recycling bin.

[0013] Preferably, the three-stage recovery furnace is equipped with heat exchange tubes inside, and a dust removal filter screen is fixedly connected to one side of the three-stage recovery furnace.

[0014] Preferably, a water storage tank is provided on the outside of the three-stage recycling furnace, and a connecting water pipe is provided inside the water storage tank. The connecting water pipe passes through the three-stage recycling furnace and is connected to the interior of the three-stage recycling furnace. A water pump is provided at the end of the connecting water pipe near the water storage tank.

[0015] Preferably, the three-stage recycling furnace has an exhaust port on the side away from the connecting recycling pipe, and an exhaust pipe is installed inside the exhaust port, which is connected to the interior of the three-stage recycling furnace.

[0016] The beneficial effects of this utility model are:

[0017] When the furnace tubes undergo heat treatment, the high-temperature exhaust gas generated by the burner passes sequentially through a primary recovery furnace, a secondary recovery box, and a tertiary recovery furnace. This allows for thorough heat exchange between the high-temperature exhaust gas and air, guide fins, and cooling water. In the primary recovery furnace, an axial flow fan drives the air to flow in the opposite direction, and guide fins increase the contact area to improve heat exchange efficiency. The secondary recovery box uses guide plates and guide fins to increase the length of the exhaust gas flow path and the degree of turbulence, extending the heat exchange time. The tertiary recovery furnace exchanges heat with cooling water through multiple heat exchange tubes. This tiered waste heat recovery design effectively solves the contradiction of "excessive heat exchange in the high-temperature section and heat waste in the low-temperature section" in traditional industrial furnaces, greatly improving waste heat utilization and reducing the overall energy consumption during furnace tube heat treatment, thus achieving high efficiency and energy saving during furnace tube heat treatment.

[0018] Waste gas is collected by a gas collection hood at the top of the heating furnace, and then guided into each stage of the recovery device by a guide pipe. This ensures stable flow of the waste gas within the system and guarantees the stability and efficiency of the waste heat recovery process. By installing guide fins in the first-stage recovery furnace, using guide plates and guide ridges in the second-stage recovery box, and installing multiple heat exchange tubes in the tertiary recovery furnace, the contact area between the waste gas and the heat exchange medium is increased, the flow path of the waste gas is extended, and the degree of turbulence is enhanced, resulting in more complete heat exchange and significantly improved heat exchange efficiency.

[0019] The interlocking of the lower fixed recess, upper fixed recess, positioning shaft, and furnace tube bushing effectively prevents displacement of the furnace tube during hot working, ensuring the stability and precision of the hot working process. During the hot working process, drive motor one moves the furnace tube to the heating furnace chamber, while drive motor two rotates the furnace tube, allowing it to undergo hot working while rotating. This achieves uniform hot working on the surface of the furnace tube and improves the quality of the hot working process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a high-efficiency and energy-saving industrial furnace tube heat treatment equipment proposed in this utility model;

[0021] Figure 2 This is a top view of a high-efficiency and energy-saving industrial furnace tube heat treatment equipment proposed in this utility model;

[0022] Figure 3 This is a schematic diagram of the internal structure of the primary recovery furnace of a high-efficiency and energy-saving industrial furnace tube heat treatment equipment proposed in this utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of the secondary recovery box of a high-efficiency and energy-saving industrial furnace tube heat treatment equipment proposed in this utility model;

[0024] Figure 5 This is a schematic diagram of the internal structure of a three-stage recovery furnace in a high-efficiency and energy-saving industrial furnace tube heat treatment equipment proposed in this utility model.

[0025] In the picture:

[0026] 1. Support base; 2. Heating furnace chamber; 201. Burner; 202. Gas outlet; 203. Guide pipe; 204. Gas collection hood; 3. Primary recovery furnace; 301. Guide fins; 302. Axial flow fan; 4. Conical diffuser; 5. Secondary recovery box; 501. Guide plate; 502. Guide rib; 6. Connecting recovery pipe; 7. Tertiary recovery furnace; 701. Heat exchange tube; 702. Dust removal filter screen; 8. L-shaped support plate; 801. Drive belt; 802. Drive roller; 803. Drive motor one; 804. Drive motor two; 805. Furnace tube bushing; 9. Lower fixed recess; 901. Upper fixed recess; 902. Positioning hole; 903. Positioning shaft; 10. Water storage tank; 11. Connecting water pipe; 12. Exhaust pipe. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0029] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0030] Example:

[0031] Reference Figures 1-5 A high-efficiency and energy-saving industrial furnace tube heat treatment equipment includes a support base 1, a heating furnace chamber 2 fixedly connected to the support base 1, a burner 201 installed on the inner wall of the heating furnace chamber 2, and an air outlet 202 opened on the top of the heating furnace chamber 2.

[0032] The gas outlet 202 is connected to a primary recovery furnace 3 via a guide pipe 203. A gas collection hood 204 is fixedly connected to one end of the guide pipe 203 near the gas outlet 202. A secondary recovery box 5 is connected to the end of the primary recovery furnace 3 via a conical diffuser hood 4. A connecting recovery pipe 6 is fixedly connected to one end of the secondary recovery box 5. A tertiary recovery furnace 7 is fixedly connected to the end of the connecting recovery pipe 6.

[0033] An L-shaped support plate 8 is fixedly connected to one side of the support base 1. A transmission belt 801 is installed inside the heating furnace chamber 2. Transmission rollers 802 are installed at both ends of the transmission belt 801. A drive motor 803 is installed on one side of the inner wall of the L-shaped support plate 8. The transmission roller 802 located on the left side of the transmission belt 801 is connected to the output end of the drive motor 803.

[0034] A drive motor 804 is provided on one side of the L-shaped support plate 8. The output end of the drive motor 804 passes through the L-shaped support plate 8 and is connected to a telescopic rod. The end of the telescopic rod is fixedly connected to a furnace tube bushing 805.

[0035] A lower fixed recess 9 is fixedly connected to the transmission belt 801. An upper fixed recess 901 is provided above the lower fixed recess 9. Both the upper fixed recess 901 and the lower fixed recess 9 have several positioning holes 902. A positioning shaft 903 is provided in the positioning hole 902. An arc-shaped groove is provided on the opposite side of the upper fixed recess 901 and the lower fixed recess 9. The furnace tube to be processed is placed in the arc-shaped groove.

[0036] The primary recycling furnace 3 is equipped with guide fins 301 inside, and an axial flow fan 302 is installed on one side of the inner wall of the primary recycling furnace 3.

[0037] The secondary recycling bin 5 is fixedly connected to a flow guide plate 501. The inner wall of the secondary recycling bin 5 is provided with several flow guide ridges 502, which are distributed in a corrugated shape on the inner wall of the secondary recycling bin 5.

[0038] The three-stage recovery furnace 7 is equipped with heat exchange tubes 701, and a dust removal filter screen 702 is fixedly connected to one side of the three-stage recovery furnace 7.

[0039] The three-stage recycling furnace 7 is equipped with a water storage tank 10 on the outside, and a connecting water pipe 11 is installed inside the water storage tank 10. The connecting water pipe 11 passes through the three-stage recycling furnace 7 and is connected to the interior of the three-stage recycling furnace 7. A water pump is installed at the end of the connecting water pipe 11 near the water storage tank 10.

[0040] The three-stage recovery furnace 7 has an exhaust port on the side away from the connecting recovery pipe 6. An exhaust pipe 12 is installed inside the exhaust port, and the exhaust pipe 12 is connected to the interior of the three-stage recovery furnace 7 through the exhaust port.

[0041] In this embodiment, when the furnace tube needs to be heat-processed, the furnace tube is first placed in the arc-shaped groove of the lower fixed recess 9 and the upper fixed recess 901. Then, one end of the furnace tube is sleeved in the furnace tube bushing 805. At this time, the positioning shaft 903 is inserted into the positioning hole 902 of the lower fixed recess 9 and the upper fixed recess 901 to fix the upper fixed recess 901 and prevent the furnace tube from shifting during heat processing. After the furnace tube is fixed, the drive motor 803 is started. When the drive motor 803 runs, it drives the transmission roller 802 to rotate. When the transmission roller 802 rotates, it drives the transmission belt 801 to move forward. The transmission belt 801 drives the lower fixed recess 9 and the furnace tube to be gradually conveyed into the heating furnace 2. At this time, the burner 201 inside the heating furnace 2 is started. When the fuel is burned in the burner 201, the furnace tube is heat-treated by heat radiation and convection. When the burner 201 is running, the drive motor 804 is started. When the drive motor 804 is running, it drives the telescopic rod and the furnace tube bushing 805 to rotate. When the furnace tube bushing 805 rotates, it drives the furnace tube inside to rotate. Thus, when the furnace tube is rotating, the surface of the furnace tube can be uniformly heat-treated.

[0042] Specifically, during the heat treatment of the furnace tubes, the combustion of fuel in the burner 201 generates a large amount of high-temperature exhaust gas carrying a significant amount of residual heat. During the heating process of the furnace tubes, the combustion exhaust gas is collected by the gas collection hood 204 at the top of the heating furnace 2 and enters the guide pipe 203. Subsequently, the exhaust gas enters the primary recovery furnace 3 through the guide pipe 203. At this time, the axial flow fan 302 on one side of the primary recovery furnace 3 is activated. The axial flow fan 302 drives the air inside the primary recovery furnace 3 to flow in the opposite direction. When the air comes into contact with the exhaust gas, heat exchange occurs. Passing through the guide fins 301 increases the contact area and improves the heat exchange efficiency. Subsequently, as the exhaust gas temperature gradually decreases, it enters the secondary recovery box 5 through the conical diffuser 4. When the exhaust gas flows within the secondary recovery box 5, it is deflected by the guide plate 501. The exhaust gas is divided into several branches and then flows in an S-shape along the guide ridges 502 on the inner wall of the secondary recovery tank 5. This increases the length of the exhaust gas flow path and the degree of turbulence, prolonging the heat exchange time. Subsequently, the temperature of the exhaust gas further decreases and enters the tertiary recovery furnace 7 through the connecting recovery pipe 6. When the exhaust gas enters the tertiary recovery furnace 7, it is distributed to multiple heat exchange tubes 701. At this time, the water pump is started. When the water pump is running, the cooling water inside the water storage tank 10 flows through the connecting water pipe 11 into the tertiary recovery furnace 7. When the cold water flows in the tertiary recovery furnace 7, it exchanges heat with the exhaust gas. After the exhaust gas temperature decreases after heat exchange, it passes through the dust removal filter screen 702 to remove the dust particles mixed in the exhaust gas and is discharged through the exhaust pipe 12. This recovers the waste heat in the exhaust gas and reduces the overall energy consumption in the furnace tube heat treatment process.

[0043] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency and energy-saving industrial furnace tube heat treatment equipment, comprising a supporting base (1), characterized in that, A heating furnace (2) is fixedly connected to the support base (1). A burner (201) is provided on the inner wall of the heating furnace (2). An air outlet (202) is provided on the top of the heating furnace (2). The gas outlet (202) is connected to a primary recovery furnace (3) via a guide pipe (203). A gas collecting hood (204) is fixedly connected to one end of the guide pipe (203) near the gas outlet (202). A secondary recovery box (5) is connected to the end of the primary recovery furnace (3) via a conical diffuser (4). A connecting recovery pipe (6) is fixedly connected to one end of the secondary recovery box (5). A tertiary recovery furnace (7) is fixedly connected to the end of the connecting recovery pipe (6).

2. The high-efficiency and energy-saving industrial furnace tube heat treatment equipment according to claim 1, characterized in that, An L-shaped support plate (8) is fixedly connected to one side of the support base (1). A transmission belt (801) is provided inside the heating furnace (2). Transmission rollers (802) are provided at both ends of the transmission belt (801). A drive motor (803) is provided on one side of the inner wall of the L-shaped support plate (8). The transmission roller (802) located on the left side of the transmission belt (801) is connected to the output end of the drive motor (803).

3. The high-efficiency and energy-saving industrial furnace tube heat treatment equipment according to claim 2, characterized in that, A second drive motor (804) is provided on one side of the L-shaped support plate (8). The output end of the second drive motor (804) passes through the L-shaped support plate (8) and is connected to a telescopic rod. The end of the telescopic rod is fixedly connected to a furnace tube bushing (805).

4. The high-efficiency and energy-saving industrial furnace tube heat treatment equipment according to claim 2, characterized in that, A lower fixed recess (9) is fixedly connected to the transmission belt (801). An upper fixed recess (901) is provided above the lower fixed recess (9). Both the upper fixed recess (901) and the lower fixed recess (9) are provided with a plurality of positioning holes (902). A positioning shaft (903) is provided in the positioning hole (902). An arc-shaped groove is provided on the opposite side of the upper fixed recess (901) and the lower fixed recess (9). The furnace tube to be processed is provided in the arc-shaped groove.

5. The high-efficiency and energy-saving industrial furnace tube heat treatment equipment according to claim 1, characterized in that, The primary recycling furnace (3) is equipped with guide fins (301) inside, and an axial flow fan (302) is provided on one side of the inner wall of the primary recycling furnace (3).

6. The high-efficiency and energy-saving industrial furnace tube heat treatment equipment according to claim 1, characterized in that, The secondary recycling bin (5) is fixedly connected to a flow guide plate (501), and the inner wall of the secondary recycling bin (5) is provided with several flow guide ridges (502), which are distributed in a corrugated shape on the inner wall of the secondary recycling bin (5).

7. The high-efficiency and energy-saving industrial furnace tube heat treatment equipment according to claim 1, characterized in that, The three-stage recovery furnace (7) is equipped with a heat exchange tube (701) inside, and a dust removal filter screen (702) is fixedly connected to one side of the three-stage recovery furnace (7).

8. The high-efficiency and energy-saving industrial furnace tube heat treatment equipment according to claim 7, characterized in that, The three-stage recycling furnace (7) is provided with a water storage tank (10) on the outside. A connecting water pipe (11) is provided inside the water storage tank (10). The connecting water pipe (11) passes through the three-stage recycling furnace (7) and is connected to the interior of the three-stage recycling furnace (7). A water pump is provided at one end of the connecting water pipe (11) near the water storage tank (10).

9. The high-efficiency and energy-saving industrial furnace tube heat treatment equipment according to claim 1, characterized in that, The three-stage recycling furnace (7) has an exhaust port on the side away from the connecting recycling pipe (6), and an exhaust pipe (12) is installed inside the exhaust port. The exhaust pipe (12) is connected to the interior of the three-stage recycling furnace (7) through the exhaust port.

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