Industrial furnace cooling system capable of realizing controllable cooling speed

Abstract

The utility model relates to the technical field of industrial furnace cooling, and provides an industrial furnace cooling system capable of realizing controllable cooling speed, which comprises a heat discharge port arranged in a high-temperature furnace, and a cooling component is arranged outside the high-temperature furnace. The temperature of the high-temperature furnace can be accurately and stably reduced according to a set cooling curve in the cooling process, the problem that the temperature changes too fast or too slow in a traditional method is effectively solved, and the stability and the reliability of furnace temperature control are improved; heat in the high-temperature furnace is effectively discharged by using the frequency conversion fan, and the cooling process of the high-temperature furnace can be accelerated, so that the problem that the furnace temperature is slowly reduced due to a natural heat dissipation mode is avoided, the cooling efficiency is improved, and the temperature in the high-temperature furnace is ensured to be uniformly and stably reduced; according to the utility model, during the heating and high-temperature stages of the high-temperature furnace, the sealing cover can be tightly sealed, so that heat in the high-temperature furnace is effectively locked, and the heat is prevented from leaking.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial furnace cooling technology field, specifically, relate to the industrial furnace cooling system that can realize controllable cooling speed. BACKGROUND

[0002] Industrial furnace is widely used in the field of hot working, temperature rise and fall are the core of each industrial furnace control, the temperature rise of conventional industrial furnace can be realized using various heating modes, and the temperature is controllable in the temperature rising process, the cooling system in the industrial furnace is generally the weak link of the industrial furnace temperature control, the temperature fluctuation is big in the cooling process of the industrial furnace, the cooling curve is not smooth, and there is the problem of furnace body sealing not tight in the temperature rising process. Therefore, the industrial furnace cooling system that can realize controllable cooling speed is required. UTILITY MODEL CONTENTS

[0003] In view of the defects of the prior art, the utility model provides the industrial furnace cooling system that can realize controllable cooling speed, solves the technical problems that the temperature fluctuation is big, the cooling curve is not smooth and the furnace body sealing is not tight in the temperature rising process of the industrial furnace mentioned in the above background art.

[0004] The technical scheme of the utility model is as follows: the industrial furnace cooling system that can realize controllable cooling speed, including the heat discharge port arranged in the high temperature furnace, the outside of the high temperature furnace is provided with a cooling assembly, the cooling assembly includes the heat exhaust pipe arranged at the top of the heat discharge port, the heat discharge port and the heat exhaust pipe are connected through the connecting pipe, the outside of the high temperature furnace is provided with the frequency conversion fan that is communicated with the heat exhaust pipe and provides negative pressure, the outside of the high temperature furnace is also provided with the conversion assembly for pushing the connecting pipe to move to change the connection state of the heat discharge port and the heat exhaust pipe.

[0005] Preferably, the conversion assembly includes the stretch sealing cover cylinder arranged outside the high temperature furnace, the telescopic end of the stretch sealing cover cylinder is provided with a sealing cover, and the sealing cover is connected with the connecting pipe.

[0006] Preferably, the outside of the high temperature furnace is provided with a jacking cylinder, and the sealing cover is arranged at the top of the telescopic end of the jacking cylinder.

[0007] Preferably, the size of the sealing cover is greater than the size of the heat discharge port, and the bottom of the sealing cover is closely attached to the top of the high temperature furnace.

[0008] Preferably, the top of the telescopic end of the jacking cylinder is provided with a reversible steel structure, and the reversible steel structure is hinged to the high temperature furnace.

[0009] Preferably, the weight of the reversible steel structure is at least twice the weight of the sealing cover.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] 1. The utility model ensures that the high-temperature furnace can accurately and stably reduce temperature according to the set temperature reduction curve during the temperature reduction process, effectively avoids the problem of too fast or too slow temperature change in the traditional method, and improves the stability and reliability of furnace temperature control.

[0012] 2. The utility model effectively discharges the heat in the high-temperature furnace by using the frequency conversion fan, can accelerate the temperature reduction process of the high-temperature furnace, thereby avoiding the problem of slow furnace temperature drop caused by relying on only natural heat dissipation mode, not only improves the temperature reduction efficiency, but also ensures the uniform and stable reduction of the temperature in the high-temperature furnace.

[0013] 3. The utility model can tightly seal and effectively lock the heat in the high-temperature furnace to prevent heat leakage during the temperature rising and high-temperature stages of the high-temperature furnace. BRIEF DESCRIPTION OF DRAWINGS

[0014] The utility model will be further described in detail in combination with the drawings and specific embodiments.

[0015] Fig. 1 The utility model proposes an industrial furnace temperature rising state structure schematic diagram;

[0016] Fig. 2 The utility model proposes an industrial furnace temperature reduction state structure schematic diagram;

[0017] Fig. 3 The utility model proposes an elevation structure schematic diagram.

[0018] In the drawing: 1, high-temperature furnace; 11, heat discharge port; 2, temperature reduction assembly; 21, heat exhaust pipe; 22, connecting pipe; 23, frequency conversion fan; 24, conversion assembly; 241, stretching sealing cover air cylinder; 242, sealing cover; 3, jacking air cylinder; 4, reversible steel structure. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are involved in the protection scope of the utility model.

[0020] Industrial furnace is widely used in the field of thermal processing, temperature rise is the core of each industrial furnace control, the temperature of the conventional industrial furnace rises using various heating methods can be achieved, and the temperature is controllable in the process of heating, the cooling system in the industrial furnace is generally the weak link of the temperature control of the industrial furnace, in the process of cooling the industrial furnace, the control temperature fluctuation is large, the cooling curve is not smooth, and there is a problem of loose sealing of the furnace body in the process of heating.

[0021] In order to solve the above problems in the process of cooling the industrial furnace, the control temperature fluctuation is large, the cooling curve is not smooth, and there is a problem of loose sealing of the furnace body in the process of heating, please refer to Figs. 1-3The embodiment provides an industrial furnace cooling system with controllable cooling speed, which can realize controllable furnace temperature during cooling, so that the temperature in the furnace is lowered according to a set cooling curve, and meanwhile, the whole system is tightly sealed during the temperature rising process of the industrial furnace, and the high temperature in the furnace does not cause damage to the whole cooling system. The heat discharge port 11 is arranged in the high-temperature furnace 1, and the system will not be damaged by high temperature in the high-temperature stage. The places contacting high temperature are made of refractory insulation materials. The core characteristic of the refractory insulation materials is high-temperature resistance. The melting point, thermal stability and thermal expansion coefficient of these materials are carefully designed, so that they can withstand extremely high temperature without deformation, melting or decomposition. For example, common refractory materials such as aluminum silicate, asbestos and ceramic fiber can exist stably at high temperature and will not be damaged even in a high-temperature environment of hundreds of degrees or thousands of degrees, because they have high-temperature resistance, low thermal conductivity, chemical stability and good thermal shock resistance. These materials can effectively insulate heat, prevent heat conduction, keep the structure stable and avoid high-temperature damage. In the industry, these materials are reasonably designed and used to ensure the safe operation of equipment in a high-temperature environment, so that the whole system has low precision, is easy to manufacture and has low cost. The high-temperature furnace 1 is externally provided with a cooling assembly 2. The cooling assembly 2 comprises a heat discharge air pipe 21 arranged at the top of the heat discharge port 11. The heat discharge port 11 and the heat discharge air pipe 21 are communicated through a connecting pipe 22. The connecting pipe 22 is used in the forced cooling process. The connecting pipe 22 connects the heat discharge port 11 and a main pipe line of a variable frequency fan 23. The variable frequency fan 23 is used for extracting heat in the high-temperature furnace 1. The high-temperature furnace 1 is externally provided with the variable frequency fan 23 which is communicated with the heat discharge air pipe 21 and provides negative pressure. The variable frequency fan 23 is a power source of the whole cooling system and provides negative pressure for the discharge of the gas in the high-temperature furnace 1. Meanwhile, the controllability of heat discharge can be realized. The control system logic is simple. A PLC+inverter and the variable frequency fan 23 form a closed loop. The frequency of the variable frequency fan 23 can realize the controllable temperature reduction in the high-temperature furnace 1.The high-temperature furnace 1 is further provided with a conversion assembly 24 outside the high-temperature furnace 1 to push the connecting pipe 22 to move to change the connection state of the heat exhaust port 11 and the heat exhaust pipe 21. The conversion assembly 24 comprises a stretching sealing cover cylinder 241 arranged outside the high-temperature furnace 1. The stretching end of the stretching sealing cover cylinder 241 is provided with a sealing cover 242. The stretching sealing cover cylinder 241 pulls the sealing cover 242 and the connecting pipe 22 to realize the butt joint of the sealing cover 242 or the connecting pipe 22 and the heat exhaust port 11. The size of the sealing cover 242 is greater than the size of the heat exhaust port 11. The bottom of the sealing cover 242 is tightly attached to the top of the high-temperature furnace 1. The tight attachment of the bottom of the sealing cover 242 to the top of the high-temperature furnace 1 can reduce the leakage of gas, heat or other substances, thereby improving the sealing effect. At the same time, the size of the sealing cover 242 is greater than the size of the heat exhaust port 11, which can better cover the heat exhaust port 11 and further enhance the sealing performance. The tight sealing can effectively isolate the high temperature in the high-temperature furnace 1, avoid the leakage of heat through the heat exhaust port 11, improve the heat energy utilization efficiency, better sealing can prevent the leakage of harmful substances or flue gas in the high-temperature environment, ensure the operation safety, and the sealing cover 242 is connected with the connecting pipe 22.

[0022] Referring to Figs. 1-3 , the high-temperature furnace 1 is provided with a jacking cylinder 3 outside the high-temperature furnace 1. The sealing cover 242 is arranged at the top of the stretching end of the jacking cylinder 3. The stretching end of the jacking cylinder 3 is provided with a reversible steel structure 4. The reversible steel structure 4 is hinged to the high-temperature furnace 1. The jacking cylinder 3 can be opened at a certain angle to provide a moving channel for the components of the sealing cover 242 and the connecting pipe 22. The jacking cylinder 3 jacks up the whole reversible steel structure 4 by a small section to realize the direct separation of the sealing cover 242 and the heat exhaust port 11 and create a space for the stretching sealing cover cylinder 241 to move. The weight of the reversible steel structure 4 is at least twice the weight of the sealing cover 242. The sealing cover 242 seals the heat exhaust port 11 during the heating and heat preservation process of the high-temperature furnace 1. The weight of the reversible steel structure 4 can provide additional pressure to the sealing cover 242 to enhance the sealing performance between the contact surface of the sealing cover 242 and the heat exhaust port 11. The weight makes the sealing cover 242 more closely contact with the heat exhaust port 11, thereby reducing the possibility of leakage. This helps to ensure that the heat in the high-temperature furnace 1 will not escape through the heat exhaust port 11, thereby improving the stability of the temperature in the high-temperature furnace 1 and the heat energy utilization efficiency.

[0023] Referring to Fig. 1 , the jacking cylinder 3 jacks up to separate the sealing cover 242 and the heat exhaust port 11. The stretching sealing cover cylinder 241 pulls back the sealing cover 242 to butt joint the connecting pipe 22 and the heat exhaust port 11. The jacking cylinder 3 is released. The connecting pipe 22 is butt jointed with the heat exhaust port 11. The variable frequency fan 23 is opened. The temperature of the high-temperature furnace 1 is lowered according to the set curve.

[0024] Referring to Fig. 2The top lifting cylinder 3 lifts the reversible steel structure 4, disconnects the connecting pipe 22 and the heat outlet 11, lifts the stretching sealing cover cylinder 241, connects the sealing cover 242 and the heat outlet 11, releases the top lifting cylinder 3, seals the heat outlet 11 by the weight of the reversible steel structure 4, closes the variable frequency fan 23, and realizes the sealing of the high-temperature furnace 1.

[0025] The above are only preferred embodiments of the present application, and are not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An industrial furnace cooling system capable of controlling the cooling rate, comprising a heat exhaust port (11) arranged in a high-temperature furnace (1), characterized in that, The high-temperature furnace (1) is externally provided with a cooling assembly (2), the cooling assembly (2) comprises a heat exhaust pipe (21) arranged at the top of a heat exhaust port (11), a connecting pipe (22) is arranged between the heat exhaust port (11) and the heat exhaust pipe (21) to communicate, the high-temperature furnace (1) is externally provided with a variable frequency fan (23) in communication with the heat exhaust pipe (21) and providing negative pressure, and the high-temperature furnace (1) is externally further provided with a conversion assembly (24) for pushing the connecting pipe (22) to move to change the connection state of the heat exhaust port (11) and the heat exhaust pipe (21).

2. The industrial furnace cooling system according to claim 1, wherein, The conversion assembly (24) comprises a stretch sealing cover cylinder (241) arranged outside the high-temperature furnace (1), and a sealing cover (242) is arranged at the telescopic end of the stretch sealing cover cylinder (241); the sealing cover (242) is connected with the connecting pipe (22).

3. The industrial furnace cooling system according to claim 1, wherein, The high-temperature furnace (1) is externally provided with a jacking cylinder (3), and the sealing cover (242) is arranged at the top of the telescopic end of the jacking cylinder (3).

4. The industrial furnace cooling system according to claim 2, wherein, The size of the sealing cover (242) is greater than that of the heat exhaust port (11), and the bottom of the sealing cover (242) is tightly attached to the top of the high-temperature furnace (1).

5. The industrial furnace cooling system according to claim 3, wherein, The top of the telescopic end of the jacking cylinder (3) is provided with a reversible steel structure (4), and the reversible steel structure (4) is hinged to the high-temperature furnace (1).

6. The industrial furnace cooling system according to claim 5, wherein, The weight of the reversible steel structure (4) is at least twice the weight of the sealing cover (242).

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