Straight tube annealing furnace coil circulating water automatic cooling device

Abstract

The utility model belongs to annealing furnace bosh technical field especially a kind of straight pipe annealing furnace bosh circulating water automatic cooling device, present and propose the following scheme, including base, the inside integration of base is provided with furnace bosh wall, interlayer is established between furnace bosh wall and base, and the middle part annular of interlayer is equipped with cooling pipe, the top of base is fixed with upper shell, the inside installation of upper shell is equipped with temperature sensor, the outside of base is provided with cooling water pipe, electric regulating valve, water pump, water tank and return water pipe being connected with cooling pipe;By setting cooling pipe, from seamless copper pipe bending into spiral structure, closely adhere to furnace bosh wall, and fixed by high-temperature clamp, cooling water flows through spiral cooling pipe, and high-temperature furnace bosh outer wall is fully contacted, temperature rises after absorbing heat, return water tank through return water pipe, through water tank natural heat dissipation or can be optionally installed heat dissipation fan to accelerate heat dissipation, reduce water temperature, re-enter circulation, form continuous cooling closed loop.

Description

Technical Field

[0001] This utility model relates to the field of annealing furnace technology, and in particular to an automatic cooling device for circulating water in a straight tube annealing furnace. Background Technology

[0002] In the annealing process of straight tubes, such as metal pipes, the furnace liner, as the core component that supports the pipe and provides a high-temperature annealing environment, is in a high-temperature state for a long time. The high-temperature environment will cause oxidation, creep and thermal fatigue of the furnace liner material, which will not only shorten the service life of the furnace liner, but may also cause cracking and deformation due to local overheating, affecting the stability of the annealing process and the quality of the pipe products.

[0003] However, existing annealing cooling methods rely on manual intermittent water spraying, which involves manually spraying water onto the outer wall of the furnace at regular intervals to reduce the temperature by absorbing heat through water evaporation. However, this method suffers from problems such as uneven cooling, high labor costs, and the inability to dynamically adjust the temperature based on the real-time temperature of the furnace. Furthermore, excessive water spraying can lead to water waste, and water accumulation may seep into other parts of the furnace, causing malfunctions. This phenomenon has become a problem that urgently needs to be solved by those in the field.

[0004] Therefore, an automatic cooling device for circulating water in a straight-tube annealing furnace is needed. Utility Model Content

[0005] This invention proposes an automatic cooling device for circulating water in a straight-tube annealing furnace, which solves the problems of existing annealing cooling methods that rely on manual intermittent water spraying. These methods involve manually spraying water onto the outer wall of the furnace at regular intervals to absorb heat through water evaporation, but suffer from uneven cooling, high labor costs, and an inability to dynamically adjust the cooling based on the real-time temperature of the furnace. Furthermore, excessive water spraying can lead to water waste, and water accumulation may seep into other parts of the furnace, causing malfunctions.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An automatic cooling device for circulating water in a straight-tube annealing furnace includes a base, an integral furnace wall inside the base, a sandwich layer between the furnace wall and the base, and a cooling pipe annularly installed in the middle of the sandwich layer. An upper shell is fixed to the top of the base, and a temperature sensor is installed inside the upper shell. A cold water pipe, an electric regulating valve, a water pump, a water tank, and a return water pipe are arranged outside the base and communicate with the cooling pipe. A filter screen is fixedly installed between the outlet end of the water pump and the inlet end of the cold water pipe.

[0007] Preferably, a socket is fixed to the inner wall of the interlayer, a clamp is inserted into the middle of the socket, and the cooling pipe is bent into a spiral structure, which is closely fitted to the outer wall of the furnace liner and fixed to the inside of the interlayer by the clamp.

[0008] Preferably, the temperature sensor is a type K thermocouple, and 3-5 temperature sensors are evenly arranged along the axial direction of the furnace wall.

[0009] Preferably, the right end of the cooling pipe is connected to the inlet of the return water pipe, the outlet of the return water pipe is connected to a water tank, the top of the water tank is provided with a water inlet, and the outlet of the water tank is connected to the inlet of the water pump.

[0010] Preferably, the filter screen is provided with a flange on its periphery for fixed connection with the water pump.

[0011] Preferably, the electric regulating valve is located in the middle section of the cold water pipe, and the electric regulating valve is connected to the temperature sensor via a controller and a signal line.

[0012] This utility model proposes an automatic cooling device for circulating water in a straight-tube annealing furnace. Compared with the prior art, the beneficial effects of this utility model are: 1. By setting up cooling pipes, seamless copper tubes are bent into a spiral structure to fit tightly against the furnace wall and fixed with high-temperature resistant clamps. The inlet end of the cooling pipe is connected to the outlet of the circulating pump, and the outlet end is connected to the water tank through the return pipe, forming a closed loop. When the cooling water flows through the spiral cooling pipe, it comes into full contact with the high-temperature outer wall of the furnace, absorbs heat and its temperature rises. It then returns to the water tank through the return pipe, where it is naturally cooled or can be cooled by a cooling fan to accelerate the cooling process and lower the water temperature before re-entering the circulation, forming a continuous cooling closed loop. 2. By setting temperature sensors, multiple temperature sensors arranged along the axial direction collect the temperature data of the outer wall of the furnace in real time when the furnace is working, and convert the data into electrical signals and transmit them to the PLC controller. The PLC controller then controls the opening and closing of the electric regulating valve to cooperate with the water pump to boost water and cool it down in time. The system can also be improved by adding a filter screen. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of an automatic cooling device for circulating water in a straight tube annealing furnace, as proposed in this utility model. Figure 2 This is a schematic diagram of the overall structure of an automatic cooling device for circulating water in a straight tube annealing furnace, as proposed in this utility model. Figure 3 This is a partial structural schematic diagram of an automatic cooling device for circulating water in a straight-tube annealing furnace, as proposed in this utility model. Figure 4 This is a partial enlarged schematic diagram of an automatic cooling device for circulating water in a straight tube annealing furnace, as proposed in this utility model.

[0014] In the diagram: 1. Base; 2. Furnace wall; 3. Interlayer; 4. Socket; 5. Clamp; 6. Cooling pipe; 7. Upper shell; 8. Temperature sensor; 9. Cold water pipe; 10. Electric regulating valve; 11. Filter screen; 12. Flange; 13. Water pump; 14. Water tank; 15. Water inlet; 16. Return water pipe. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4 This utility model provides a technical solution: an automatic cooling device for circulating water in a straight tube annealing furnace, including a base 1, an integral furnace wall 2 inside the base 1, a sandwich layer 3 between the furnace wall 2 and the base 1, and a cooling pipe 6 annularly installed in the middle of the sandwich layer 3, an upper shell 7 fixed to the top of the base 1, and a temperature sensor 8 installed inside the upper shell 7.

[0017] Furthermore, a socket 4 is fixed to the inner wall of the interlayer 3, and a clamp 5 is inserted into the middle of the socket 4. The cooling pipe 6 is bent into a spiral structure, which is tightly fitted to the outer wall of the furnace and fixed to the inside of the interlayer 3 by the clamp 5. When the cooling water flows through the spiral cooling pipe 6, it comes into full contact with the high-temperature outer wall of the furnace, absorbs heat and rises in temperature, thus ensuring the cooling effect.

[0018] Furthermore, the temperature sensor 8 is set with a K-type thermocouple, and 3-5 temperature sensors 8 are evenly arranged along the axial direction of the furnace wall 2. The multiple temperature sensors 8 arranged along the axial direction collect the temperature data of the outer wall of the furnace in real time and convert the data into electrical signals and transmit them to the PLC controller.

[0019] Furthermore, the base 1 is externally provided with a cold water pipe 9 connected to the cooling pipe 6, an electric regulating valve 10, a water pump 13, a water tank 14, and a return water pipe 16. A filter screen 11 is fixedly installed between the outlet end of the water pump 13 and the inlet end of the cold water pipe 9.

[0020] Furthermore, the right end of the cooling pipe 6 is connected to the inlet of the return water pipe 16, and the outlet of the return water pipe 16 is connected to the water tank 14. The top of the water tank 14 is provided with an inlet 15, and the outlet of the water tank 14 is connected to the inlet of the water pump 13. When the cooling water flows through the spiral cooling pipe 6, it comes into full contact with the outer wall of the high-temperature furnace, absorbs heat and its temperature rises. It then returns to the water tank 14 through the return water pipe 16, where it is naturally cooled or optionally cooled by a cooling fan to reduce the water temperature and re-enter the circulation, forming a continuous cooling closed loop.

[0021] Furthermore, a flange 12 is provided around the filter screen 11 and is fixedly connected to the water pump 13, so that filtration can be effectively carried out through the filter screen 11.

[0022] Furthermore, the electric regulating valve 10 is located in the middle section of the cold water pipe 9. The electric regulating valve 10 is connected to the temperature sensor 8 through a controller and signal line, which facilitates real-time temperature detection and timely automatic adjustment of the valve opening and closing.

[0023] Furthermore, firstly, the cooling pipe 6 is made of seamless copper tubing bent into a spiral structure, tightly fitting the furnace wall 2, and fixed by a high-temperature resistant clamp 5. The inlet end of the cooling pipe 6, the cold water pipe 9, is connected to the outlet of the circulating pump, and the outlet end is connected to the water tank 14 through the return water pipe 16, forming a closed loop. When the cooling water flows through the spiral cooling pipe 6, it comes into full contact with the high-temperature outer wall of the furnace, absorbs heat, and its temperature rises. It then returns to the water tank 14 through the return water pipe 16, where it is naturally cooled or optionally cooled by a cooling fan to accelerate heat dissipation, thus lowering the water temperature before re-entering the circulation, forming a continuous cooling closed loop. Next, when the furnace is working, multiple temperature sensors 8 arranged along the axial direction collect the temperature data of the outer wall of the furnace in real time, convert the data into electrical signals, and transmit them to the PLC controller. This controller further controls the opening and closing of the electric regulating valve 10 to cooperate with the water pump 13 to boost the water pressure and perform timely cooling. In addition, by adding a filter screen 11, the circulating water is ensured to intercept impurities during the flow process, ensuring that the cooling pipe 6 is unobstructed and the heat exchange efficiency is stable.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic cooling device for circulating water in a straight tube annealing furnace, comprising a base (1), characterized in that: The base (1) has an integral furnace wall (2) inside. A sandwich layer (3) is opened between the furnace wall (2) and the base (1). A cooling pipe (6) is installed in the middle of the sandwich layer (3). An upper shell (7) is fixed on the top of the base (1). A temperature sensor (8) is installed inside the upper shell (7). A cold water pipe (9), an electric regulating valve (10), a water pump (13), a water tank (14), and a return water pipe (16) connected to the cooling pipe (6) are arranged on the outside of the base (1). A filter screen (11) is fixedly installed between the outlet end of the water pump (13) and the inlet end of the cold water pipe (9).

2. The automatic cooling device for circulating water in a straight tube annealing furnace according to claim 1, characterized in that: The inner wall of the interlayer (3) is fixed with a socket (4), and a clamp (5) is inserted into the middle of the socket (4). The cooling pipe (6) is bent into a spiral structure, closely fits the outer wall of the furnace, and is fixed inside the interlayer (3) by the clamp (5).

3. The automatic cooling device for circulating water in a straight tube annealing furnace according to claim 1, characterized in that: The temperature sensor (8) is set with a K-type thermocouple, and 3-5 temperature sensors (8) are evenly arranged along the axial direction of the furnace wall (2).

4. The automatic cooling device for circulating water in a straight tube annealing furnace according to claim 1, characterized in that: The right end of the cooling pipe (6) is connected to the inlet of the return water pipe (16), the outlet of the return water pipe (16) is connected to the water tank (14), the top of the water tank (14) is provided with an inlet (15), and the outlet of the water tank (14) is connected to the inlet of the water pump (13).

5. The automatic cooling device for circulating water in a straight tube annealing furnace according to claim 1, characterized in that: The filter screen (11) is provided with a flange (12) on its periphery, which is fixedly connected to the water pump (13).

6. The automatic cooling device for circulating water in a straight tube annealing furnace according to claim 1, characterized in that: The electric regulating valve (10) is located in the middle section of the cold water pipe (9), and the electric regulating valve (10) is connected to the temperature sensor (8) through a controller and signal line.

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