Heat treatment furnace for annealing seamless steel pipe

Abstract

The utility model discloses a thermal treatment furnace for annealing seamless steel tubes, which comprises a fixed platform, a base, a rotating component and a furnace cover, the base is mounted on the fixed platform, and a working cavity is further arranged in the base; the rotating assembly comprises a plurality of rotating seats, the rotating seats are provided with placing frames for placing steel pipes, the placing frames are sleeved with the steel pipes, the rotating seats are installed on the base, and the rotating seats are suitable for driving the placing frames to rotate; the furnace cover covers the base, a heating pipe is arranged in the furnace cover, and the heating pipe is suitable for heating the steel pipe on the placing frame; the seamless steel pipe can be well and uniformly heated and cooled, and the material quality of the seamless steel pipe is improved.

Description

Technical Field

[0001] The utility model relates to a heat treatment furnace for annealing seamless steel pipes, belonging to the technical field of heat treatment furnaces. Background Art

[0002] A heat treatment furnace is a metal heat treatment equipment used to heat metal materials to a certain temperature, maintain them at this temperature for a certain period of time, and finally cool them. Heat treatment furnaces are widely used in fields such as metal processing, machinery manufacturing, aerospace, and automobile manufacturing. After retrieval, it is found that a Chinese patent with the publication number CN221028571U discloses a heat treatment furnace. In this patent, the metal material to be processed is placed on a trolley, the furnace door is opened, and the trolley is driven into the heating area inside the furnace body. The heat treatment furnace is started to make the temperature of the furnace body reach the specified temperature and start heating. After the heating is completed, the heating is stopped, and the metal material is kept in the heat preservation area for a certain period of time to allow the metal material to fully absorb heat. Subsequently, cooling is carried out. After the cooling is completed, the furnace door is opened, and the trolley is driven out of the furnace body. The heat treatment process is completed, and the metal material is taken out. However, in this patent, metal materials such as steel are stacked in the furnace for treatment, and the stacked materials cannot be heated and cooled evenly, which will have a certain impact on the quality of the annealed metal materials. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a heat treatment furnace for annealing seamless steel pipes, which can uniformly heat and cool seamless steel pipes well and improve the material quality of seamless steel pipes.

[0004] To solve the above technical problem, the technical solution of the utility model is: a heat treatment furnace for annealing seamless steel pipes, comprising:

[0005] A fixed platform;

[0006] A base, the base is installed on the fixed platform, and a working cavity is also provided in the base;

[0007] A rotating assembly, the rotating assembly includes a plurality of rotating seats, a placing rack for placing steel pipes is provided on the rotating seat, the steel pipe is sleeved on the placing rack, the rotating seat is installed on the base, and the rotating seat is adapted to drive the placing rack to rotate;

[0008] A furnace cover, the furnace cover covers the base, and heating pipes are provided in the furnace cover, and the heating pipes are adapted to heat-treat the steel pipes in the placing rack;

[0009] Furthermore, in order to guide the movement of the furnace hood, a heat treatment furnace for seamless steel pipe annealing further includes two guiding components. The guiding component includes a guiding column, a guiding seat, and a guiding member. The guiding seat is installed on the fixed platform, the guiding column is installed on the guiding seat, the guiding member is slidably fitted on the guiding column, and one end of the guiding member is connected to the furnace hood.

[0010] Furthermore, in order to limit the movement range of the furnace hood, the guiding component further includes a limiting block. The limiting block is installed at the top end of the guiding column, and the limiting block is adapted to limit the movement range of the guiding member.

[0011] Furthermore, in order to facilitate the lifting and lowering of the furnace hood, a lifting ring is provided at the top end of the furnace hood.

[0012] Furthermore, in order to extend the service life of the equipment, a buffer platform is further provided on the base. A buffer pad is provided on the buffer platform, and the buffer pad is adapted to buffer the furnace hood when it falls.

[0013] Furthermore, in order to enable the steel pipe to be heated evenly, the rotating component further includes a driving mechanism. The driving mechanism includes a driving wheel, at least one driven wheel, and at least one transmission shaft. The driving wheel and the driven wheel are installed in the working chamber, the driving wheel and the driven wheel are engaged with each other, and the transmission shaft is adapted to connect the driven wheel and the rotating seat.

[0014] Furthermore, the driving mechanism further includes a driving motor. The driving motor is installed in the working chamber, the movable end of the driving motor is connected to the driving wheel, and the driving motor is adapted to drive the driving wheel to rotate.

[0015] Furthermore, a heat treatment furnace for seamless steel pipe annealing further includes a cooling fan. The cooling fan is installed in the working chamber, and a plurality of cooling air outlets are provided on the base. The cooling fan is adapted to cool the steel pipes in the placement rack through the cooling air outlets.

[0016] Furthermore, for heat preservation, the furnace hood is provided with a heating chamber, and the heating tube is installed in the heating chamber.

[0017] Furthermore, in order to monitor the temperature in the furnace, a heat treatment furnace for seamless steel pipe annealing further includes a temperature sensor. The temperature sensor is installed on the base.

[0018] After adopting the above technical solutions, the utility model has the following beneficial effects:

[0019] In this embodiment, the steel pipe is placed on the placement rack of the rotating assembly. The furnace hood is covered on the base by an external crane. The driving motor is started, and the driving wheel rotates. The power is transmitted to the driven wheel through the transmission shaft, so that the rotating seat drives the steel pipe to rotate, ensuring that the steel pipe is evenly heated during the heating process.

[0020] The temperature sensor monitors the temperature in the furnace in real time. After the heating is completed, the heating tube stops working, and the steel pipe is left to stand for a period of time. Subsequently, the cooling fan is started at an appropriate temperature, and the steel pipe is cooled through the cooling air outlet. After the heat treatment is completed, the driving motor and the cooling fan are stopped, and the steel pipe is taken out for subsequent processing or use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a perspective view of a heat treatment furnace for annealing seamless steel pipes of the present utility model;

[0022] Figure 2 is a front view of a heat treatment furnace for annealing seamless steel pipes of the present utility model;

[0023] Figure 3 is a left view of a heat treatment furnace for annealing seamless steel pipes of the present utility model;

[0024] Figure 4 is a full cross-sectional view of a heat treatment furnace for annealing seamless steel pipes of the present utility model;

[0025] Figure 5 is a schematic structural view of the rotating assembly of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to make the content of the present utility model easier to be clearly understood, the present utility model will be further described in detail below according to specific embodiments in conjunction with the accompanying drawings.

[0027] As Figures 1-5 shown, a heat treatment furnace for annealing seamless steel pipes includes:

[0028] A fixed platform 1;

[0029] A base 2, the base 2 is installed on the fixed platform 1, and a working chamber 21 is also provided in the base 2;

[0030] A rotating assembly, the rotating assembly includes five rotating seats 31, a placement rack 311 for placing the steel pipe is provided on the rotating seat 31, the steel pipe is sleeved on the placement rack 311, the rotating seat 31 is installed on the base 2, and the rotating seat 31 is adapted to drive the placement rack 311 to rotate;

[0031] A furnace hood 4, the furnace hood 4 is covered on the base 2, and a heating tube is provided in the furnace hood 4, and the heating tube is adapted to heat-treat the steel pipe on the placement rack 311;

[0032] In this embodiment, the steel pipe is a seamless steel pipe, and the placement rack 311 is a cylindrical rack adapted to the inner diameter of the seamless steel pipe.

[0033] Specifically, as Figures 1-4 shown, the heat treatment furnace for annealing seamless steel pipes further includes two guiding components. The guiding components can specifically be structured as follows: including a guiding column 51, a guiding seat 52, and a guiding member 53. The guiding seat 52 is installed on the fixed platform 1, the guiding column 51 is installed on the guiding seat 52, the guiding member 53 is slidably fitted on the guiding column 51, and one end of the guiding member 53 is connected to the furnace hood 4.

[0034] In this embodiment, the guiding member 53 drives the furnace hood 4 to move along the axial direction of the guiding column 51 by sliding on the guiding column 51, ensuring that the furnace hood always remains stable during the movement and avoiding safety accidents or equipment damage caused by deviation from the track.

[0035] Specifically, as Figures 1-4 shown, the guiding component further includes a limiting block 54. The limiting block 54 is installed at the top end of the guiding column 51. The limiting block 54 is adapted to limit the movement range of the guiding member 53. The setting of the limiting block 54 effectively controls the movement range of the furnace hood 4 and avoids derailment caused by excessive movement of the furnace hood.

[0036] Specifically, as Figures 1-2 shown, a lifting ring 41 is provided at the top end of the furnace hood 4. The lifting ring 41 is connected to an external crane, and the furnace hood 4 can be conveniently lifted and lowered.

[0037] Specifically, as Figures 1-5 shown, a buffer platform 22 is further provided on the base 2. A buffer pad is provided on the buffer platform 22. The buffer pad is adapted to buffer the furnace hood 4 when it falls.

[0038] Specifically, as Figures 1-5 shown, the rotating component further includes a driving mechanism. The driving mechanism includes a driving wheel 61, four driven wheels 62, and five transmission shafts 63. The driving wheel 61 and the driven wheels 62 are installed in the working chamber 21. The driving wheel 61 and the driven wheels 62 are meshed with each other. The transmission shaft 63 is adapted to connect the driven wheel 62 and the rotating seat 31.

[0039] Specifically, the driving mechanism further includes a driving motor. The driving motor is installed in the working chamber 21. The movable end of the driving motor is connected to the driving wheel 61. The driving motor is adapted to drive the driving wheel 61 to rotate.

[0040] In this embodiment, the driving wheel 61 is installed in the working chamber 21. Four driven wheels 62 are circumferentially arranged around the driving wheel 61 with the driving wheel 61 as the center and are engaged with the driving wheel 61. The driving wheel 61 and the four driven wheels 62 are respectively connected to the corresponding rotating seats 31 through transmission shafts 63. The driving motor drives the driving wheel 61 to rotate clockwise, and the driving wheel 61 drives the four driven wheels 62 to rotate counterclockwise to drive the seamless steel pipe on the rotating seat 31 to rotate for uniform heating and cooling treatment.

[0041] Specifically, as Figure 4 shown, the heat treatment furnace for seamless steel pipe annealing further includes a cooling fan 7. The cooling fan 7 is installed in the working chamber 21. There are three cold air outlets 71 provided on the base 2. The cooling fan 7 is adapted to cool the steel pipe in the placement rack 311 through the cold air outlets 71.

[0042] In this embodiment, the cooling fan 7 sucks in cold air through the fan and transports it to the cold air outlets 71 through the air duct, so that the steel pipe can be quickly cooled to reach the required temperature and performance indicators. The cold air outlets 71 are located on the base 2 and are close to the placement rack 311, and can blow the cold air evenly onto the steel pipe on the placement rack 311 to quickly cool the steel pipe.

[0043] Specifically, as Figure 4 shown, the furnace hood 4 is provided with a heating chamber 42. The heating pipes are installed in the heating chamber 42. The heating pipes in the heating chamber 42 can also play a certain heat preservation role when they stop working.

[0044] Specifically, the heat treatment furnace for seamless steel pipe annealing further includes a temperature sensor adapted to collect the temperature of the steel pipe on the placement rack 311. The temperature sensor is installed on the base 2.

[0045] In this embodiment, the steel pipe is placed on the placement rack 311 of the rotating assembly. The furnace hood 4 is covered on the base 2 by an external crane. The driving motor is started, and the driving wheel 61 is driven to rotate. The power is transmitted to the driven wheels 62 through the transmission shaft 63, so that the rotating seat 31 drives the steel pipe to rotate, and the steel pipe is kept uniformly heated during the heating process;

[0046] The temperature sensor monitors the temperature in the furnace in real time. After the heating is completed, the heating pipes stop working, and the steel pipe is allowed to stand for a period of time. Subsequently, the cooling fan 7 is started at an appropriate temperature, and cold air is transported to the steel pipe through the cold air outlets 71 for cooling treatment. After the heat treatment is completed, the driving motor and the cooling fan 7 are stopped, and the steel pipe is taken out for subsequent processing or use.

[0047] In the specific embodiments described above, the technical problems solved by the present utility model, the technical solutions and the beneficial effects are further described in detail. It should be understood that the above are only specific embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A heat treatment furnace for annealing seamless steel pipes, characterized in that: include: Fixed platform (1); A base (2), the base (2) being mounted on the fixed platform (1), and a working chamber (21) being provided in the base (2); A rotating assembly, the rotating assembly comprising a plurality of rotating seats (31), the rotating seats (31) being provided with a placement frame (311) for placing a steel pipe, the steel pipe being sleeved on the placement frame (311), the rotating seats (31) being mounted on the base (2), and the rotating seats (31) being suitable for driving the placement frame (311) to rotate; A furnace cover (4), the furnace cover (4) covering the base (2), a heating tube being arranged in the furnace cover (4), the heating tube being suitable for heating the steel tube on the placement rack (311).

2. A heat treatment furnace for annealing a seamless steel pipe according to claim 1, characterized in that: The invention also comprises two guide assemblies, wherein the guide assemblies comprise a guide column (51), a guide seat (52) and a guide member (53), wherein the guide seat (52) is mounted on the fixed platform (1), the guide column (51) is mounted on the guide seat (52), the guide member (53) is slidably mounted on the guide column (51), and one end of the guide member (53) is connected to the furnace hood (4).

3. A heat treatment furnace for annealing a seamless steel pipe according to claim 2, characterized in that: The guide assembly further comprises a limit block (54), wherein the limit block (54) is mounted on the top end of the guide column (51), and the limit block (54) is suitable for limiting the range of movement of the guide member (53).

4. The heat treatment furnace for annealing a seamless steel pipe according to claim 1, characterized in that: A hanging ring (41) is provided at the top of the furnace cover (4).

5. The heat treatment furnace for annealing a seamless steel pipe according to claim 1, characterized in that: A buffer platform (22) is also provided on the base (2), and a buffer pad is provided on the buffer platform (22), wherein the buffer pad is suitable for buffering the furnace hood (4) when it falls.

6. A heat treatment furnace for annealing a seamless steel pipe according to claim 1, characterized in that: The rotating assembly further comprises a driving mechanism, the driving mechanism comprising a driving wheel (61), at least one driven wheel (62) and at least one transmission shaft (63), the driving wheel (61) and the driven wheel (62) being installed in the working chamber (21), the driving wheel (61) and the driven wheel (62) being meshed with each other, and the transmission shaft (63) being suitable for connecting the driven wheel (62) and the rotating seat (31).

7. A heat treatment furnace for annealing a seamless steel pipe according to claim 6, characterized in that: The driving mechanism further comprises a driving motor, the driving motor being mounted in the working chamber (21), the movable end of the driving motor being connected to the driving wheel (61), and the driving motor being suitable for driving the driving wheel (61) to rotate.

8. The heat treatment furnace for annealing a seamless steel pipe according to claim 1, characterized in that: It also includes a cooling fan (7), the cooling fan (7) being installed in the working chamber (21), the base (2) being provided with a plurality of cooling air ports (71), the cooling fan (7) being suitable for cooling the steel pipes in the placement rack (311) through the cooling air ports (71).

9. The heat treatment furnace for annealing a seamless steel pipe according to claim 1, characterized in that: The furnace cover (4) is provided with a heating cavity (42), and the heating pipe is installed in the heating cavity (42).

10. The heat treatment furnace for annealing a seamless steel pipe according to claim 1, characterized in that: It also includes a temperature sensor, which is mounted on the base (2).

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