Insulation device and high temperature furnace

Abstract

The present invention provides a heat preservation device and a high-temperature furnace, which relate to the technical field of heat preservation equipment and are used to solve the technical problem that a heat preservation layer is provided inside a furnace body to insulate the furnace body, resulting in a reduction in the usable space of the furnace body and a reduction in production capacity. The heat preservation device includes a heat preservation jacket and a temperature regulating mechanism; the heat preservation jacket is installed on the outside of the furnace body to be insulated, and a first accommodation space is formed between the heat preservation jacket and the outer wall of the furnace body to be insulated; the temperature regulating mechanism is configured to be able to regulate the temperature in the first accommodation space. By installing the heat preservation jacket on the outside of the furnace body to be insulated, the usable space inside the furnace body to be insulated is not occupied; and by regulating the temperature in the first accommodation space through the temperature regulating mechanism, the temperature of the furnace body to be insulated is further regulated. This can prevent the temperature of the furnace body to be insulated from being too low, thereby failing to achieve the preset heat preservation effect, and can also prevent the temperature of the furnace body to be insulated from being too high, thereby exceeding its heat-resistant temperature, and damaging the furnace body to be insulated.

Description

Technical Field

[0001] The present invention relates to the technical field of heat preservation equipment, and in particular to a heat preservation device and a high-temperature furnace. Background Art

[0002] High-temperature furnaces are commonly used heating equipment that heat materials or workpieces through heat generated by fuel combustion, electrical energy conversion, etc. Typically, high-temperature furnaces require insulation treatment to reduce heat waste.

[0003] In the prior art, high-temperature furnace insulation is mainly achieved by using an in-furnace insulation method. Specifically, an insulation layer is provided on the inner wall of the high-temperature furnace; and the insulation effect is improved by increasing the thickness of the insulation layer.

[0004] However, increasing the thickness of the insulation layer to improve the insulation effect of the high-temperature furnace will reduce the usable space in the furnace body of the high-temperature furnace, thereby reducing the production capacity of the high-temperature furnace and reducing production efficiency. Summary of the Invention

[0005] The present invention provides a heat preservation device and a high-temperature furnace, so as to solve the technical problem in the prior art that a heat preservation layer is provided in the furnace body, thereby reducing the usable space in the furnace body and lowering the production capacity.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A first aspect of the present invention provides an insulation device, which includes an insulation jacket and a temperature regulating mechanism; the insulation jacket is installed on the outside of the furnace body to be insulated, and a first accommodation space is formed between the insulation jacket and the outer wall of the furnace body to be insulated; the temperature regulating mechanism is configured to be able to adjust the temperature in the first accommodation space.

[0008] The heat-insulating device provided by the present invention includes a heat-insulating jacket and a temperature regulating mechanism. The heat-insulating jacket is installed on the outside of the furnace body to be insulated. By arranging the heat-insulating jacket on the outside of the furnace body to be insulated, the furnace to be insulated can be insulated outside the furnace, which not only does not occupy the usable space inside the furnace body to be insulated, but is also easy to install; and a first accommodating space is formed between the heat-insulating jacket and the outer wall of the furnace body to be insulated, and the temperature regulating mechanism is configured to be able to regulate the temperature in the first accommodating space. By regulating the temperature in the first accommodating space by the temperature regulating mechanism, it is possible to not only avoid the temperature in the first accommodating space being too low and thus failing to achieve the preset heat-insulating effect, but also avoid the temperature in the first accommodating space being too high, thereby causing the temperature of the furnace body to be insulated to be too high, thereby reducing the strength of the furnace body to be insulated and failing to meet the preset strength requirements.

[0009] As an improvement to the above-mentioned insulation device of the present invention, the insulation jacket is an integrated insulation jacket layer made of insulation material; or, the insulation jacket includes an outer jacket layer and an insulation layer arranged on the inner side wall of the outer jacket layer, and the first accommodating space is formed between the insulation layer and the outer wall of the furnace body to be insulated.

[0010] As an improvement to the above-mentioned heat preservation device of the present invention, the temperature adjustment mechanism includes a controller, a temperature sensor and a temperature adjustment component. The temperature sensor is installed in the first accommodating space, and the temperature sensor and the temperature adjustment component are electrically connected to the controller respectively; the controller is configured to control the working state of the temperature adjustment component according to the temperature detected by the temperature sensor, so that the temperature detected by the temperature sensor is within a preset range.

[0011] As an improvement of the above-mentioned insulation device of the present invention, there are multiple temperature sensors, at least one of which is installed on the inner wall of the insulation jacket; or at least one of which is installed on the outer wall of the furnace body to be insulated.

[0012] As an improvement to the above-mentioned insulation device of the present invention, the temperature adjustment component includes an exhaust duct and an exhaust fan, the exhaust fan is installed in the exhaust duct, and the exhaust fan is electrically connected to the controller; the first accommodating space is provided with an air inlet and an air outlet, and the air outlet is connected to the exhaust duct; the controller is configured to control the speed of the exhaust fan according to the temperature detected by the temperature sensor.

[0013] As an improvement to the above-mentioned insulation device of the present invention, there is a first gap between the insulation jacket and the furnace body to be insulated, and the first gap forms the air inlet; the air outlet is arranged on the insulation jacket; or, the insulation jacket and the furnace body to be insulated are sealed and connected, and the air inlet and the air outlet are respectively arranged on the insulation jacket.

[0014] As an improvement of the above-mentioned insulation device of the present invention, the insulation device also includes a first heat exchanger, which is installed in the exhaust duct; or, the exhaust duct includes multiple exhaust pipe sections, and the first heat exchanger is installed between two of the exhaust pipe sections; the first heat exchanger is configured to be able to exchange heat between its internal fluid medium and the gas in the first accommodation space.

[0015] As an improvement to the above-mentioned insulation device of the present invention, the temperature regulating component includes a second storage space and a suction pump arranged in the insulation jacket; the second storage space is provided with a liquid inlet and a liquid outlet, the liquid inlet is connected to the suction pump, and the suction pump is electrically connected to the controller; the controller is configured to control the rotation speed of the suction pump according to the temperature detected by the temperature sensor, so that the suction pump discharges the liquid in the second storage space from the liquid outlet.

[0016] As an improvement of the above-mentioned heat preservation device of the present invention, the heat preservation device also includes a second heat exchanger, which is installed at the liquid outlet and is configured to be able to exchange heat between its internal fluid medium and the liquid in the second holding space.

[0017] A second aspect of the present invention provides a high-temperature furnace, which includes a furnace body and the above-mentioned heat preservation device, wherein the heat preservation device is installed outside the furnace body.

[0018] The high-temperature furnace provided by the present invention includes a furnace body and the aforementioned heat-insulating device, which is installed outside the furnace body. Installing the heat-insulating device outside the furnace body not only insulates the furnace body from outside, reducing heat waste, but also ensures that the heat-insulating effect is within a preset range, preventing the furnace body temperature from being too low and failing to achieve the preset heat-insulating effect, and preventing the furnace body temperature from being too high and failing to meet the preset strength requirements.

[0019] In addition to the technical problems solved by the present invention, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the insulation device and high-temperature furnace provided by the present invention, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments of the present invention or the description of the prior art. Obviously, the drawings described below are only part of the embodiments of the present invention. These drawings and text descriptions are not intended to limit the scope of the present disclosure in any way, but rather to illustrate the concepts of the present disclosure for those skilled in the art by referring to specific embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 A schematic structural diagram of a heat preservation device and a furnace body to be heat preserved provided in the first embodiment of the present invention;

[0022] Figure 2 for Figure 1 Cross-section view in the AA direction;

[0023] Figure 3 A schematic structural diagram of a heat preservation device and a furnace body to be heat preserved provided in the second embodiment of the present invention;

[0024] Figure 4 A schematic structural diagram of a heat preservation device and a furnace body to be heat preserved provided in the third embodiment of the present invention;

[0025] Figure 5 This is a structural schematic diagram of the heat preservation device and the furnace body to be heat-insulated provided in the fourth embodiment of the present invention.

[0026] Description of reference numerals:

[0027] 1: furnace body to be insulated; 2: insulation jacket; 21: first accommodation space; 211: air inlet; 212: air outlet; 31: temperature sensor; 32: temperature adjustment component; 321: exhaust duct; 322: exhaust fan; 4: first heat exchanger. DETAILED DESCRIPTION

[0028] In the prior art, high-temperature furnaces are usually provided with a heat-insulating structure to maintain the high temperature inside the furnace, thereby achieving the effects of energy conservation, environmental protection, and improvement of the on-site environment.

[0029] To improve the insulation of high-temperature furnaces, the thickness of the insulation layer is typically increased or low-thermal-conductivity insulation materials are used. However, increasing the thickness of the insulation layer reduces the usable space within the furnace, thereby reducing the furnace's production capacity and leading to lower operating efficiency. Furthermore, the thickness of the insulation layer is limited both for cost and equipment space considerations. For example, in a converter for iron ore sintering and pelletizing, if the internal diameter is n, and a refractory brick layer of thickness m and an insulation layer of thickness k are installed, the internal diameter is reduced to n - 2m - 2k.

[0030] During the research process, the inventors discovered that when the insulation layer is excellent in thermal insulation, the furnace temperature will rise. However, the strength of the materials used in the furnace (such as steel plates) decreases as the temperature rises. Excessively high temperatures will cause the furnace strength to drop to a level that is insufficient to meet the technical strength requirements. Therefore, the furnace temperature must be kept below the temperature corresponding to the strength. Different types of steel have different upper temperature limits. For example: A3F steel has an upper limit of 530°C for anti-oxidation and a pressure temperature of 0-250°C (GB3274). 16mnRC steel plates (GB6654) have a pressure temperature of ≤475°C.

[0031] Therefore, if only the insulation layer is installed on the outside of the furnace, the temperature will be too high, affecting the furnace's strength. Therefore, the insulation effect of the insulation layer must be controlled to ensure that the maximum temperature of the furnace is within its operating temperature. Due to different environmental conditions, such as changes in ambient temperature, the insulation effect cannot be accurately controlled, causing the furnace temperature to rise above the operating temperature, affecting the furnace's strength.

[0032] In view of this, an embodiment of the present invention provides an insulation device and a high-temperature furnace, which does not occupy the usable space inside the furnace body to be insulated by installing an insulation jacket on the outside of the furnace body to be insulated, thereby avoiding affecting the production capacity; and a first accommodating space is provided between the furnace body to be insulated and the insulation jacket, and the temperature in the first accommodating space is adjusted by a temperature adjustment mechanism, thereby adjusting the temperature of the furnace body, which can prevent the temperature of the furnace body to be insulated from being too low and thus failing to achieve the preset insulation effect, and can also prevent the temperature of the furnace body to be insulated from being too high and affecting the strength of the furnace body to be insulated.

[0033] The following describes embodiments of the present invention in detail. Examples of the embodiments of the present invention are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0034] First, it's important to note that when internal furnace insulation is limited—that is, when the furnace structure, insulation thickness, and insulation material have been optimized and improved—external insulation is the only way to further reduce heat dissipation. For external insulation, the known thermodynamic heat transfer formula is: Q = εSΔT / d, where Q is the heat transfer quantity, S is the surface area, ΔT is the internal / external temperature difference, d is the insulation thickness, and ε is the thermal conductivity of the insulation material. For any high-temperature furnace, given a fixed surface area S, a fixed insulation material with a fixed thermal conductivity ε, and a fixed insulation thickness d, Q is proportional to ΔT, meaning that heat dissipation is proportional to the internal / external temperature difference. The smaller the internal / external temperature difference, the lower the heat dissipation. However, when external insulation is excellent and heat dissipation is minimal, the furnace wall temperature rises. The strength of materials used in furnaces, such as steel, decreases with increasing temperature. At excessively high temperatures, the furnace strength drops to a point where it no longer meets the technical strength requirements. Therefore, the furnace body temperature must be kept below the strength corresponding temperature value, which is defined as the limit temperature. The limit temperature varies for different materials. Therefore, when the insulation layer is used for insulation outside the furnace, the maximum temperature of the furnace wall must be controlled below the limit temperature.

[0035] Figure 1 A schematic structural diagram of a heat preservation device and a furnace body to be heat preserved provided in the first embodiment of the present invention; Figure 2 for Figure 1 Cross-section view in the AA direction.

[0036] Reference Figure 1 and Figure 2 An embodiment of the present invention provides an insulation device, which includes: an insulation jacket 2 and a temperature regulating mechanism 3; the insulation jacket 2 is installed on the outside of the furnace body 1 to be insulated, and a first accommodating space 21 is formed between the insulation jacket 2 and the outer wall of the furnace body 1 to be insulated; the temperature regulating mechanism 3 is configured to be able to adjust the temperature in the first accommodating space 21.

[0037] Optionally, the shape of the insulation jacket 2 is the same as that of the furnace body 1 to be insulated, facilitating installation. For example, if the furnace body 1 to be insulated is cylindrical, the insulation jacket 2 can also be cylindrical. The insulation jacket 2 is installed on the outside of the furnace body 1 to be insulated. The insulation jacket 2 can be connected to the furnace body 1 to be insulated. For example, the two ends of the insulation jacket 2 are sealed to the two ends of the furnace body 1 to be insulated via high-temperature resistant sealing rings. The insulation jacket 2 can also be disconnected from the furnace body 1 to be insulated. For example, the insulation jacket 2 is fixed to the operating platform via a mounting bracket, and the insulation jacket 2 is placed on the outside of the furnace body 1 to be insulated, with a gap between the insulation jacket 2 and the furnace body 1 to be insulated.

[0038] A gap is formed between the insulation jacket 2 and the outer wall of the furnace body 1 to be insulated, forming a first receiving space 21. When the temperature in the first receiving space 21 changes, the temperature of the outer wall of the furnace body 1 to be insulated also changes accordingly. Therefore, the temperature of the outer wall of the furnace body 1 to be insulated can be controlled by changing the temperature in the first receiving space 21.

[0039] The temperature regulating mechanism is capable of regulating the temperature within the first accommodating space 21. Optionally, the temperature regulating mechanism is in communication with the first accommodating space 21 and is also in communication with the outside. When the temperature within the first accommodating space 21 exceeds a preset temperature, the temperature regulating mechanism can increase the amount of heat discharged from the first accommodating space 21 to the outside, thereby bringing the temperature within the first accommodating space 21 to the preset temperature. When the temperature within the first accommodating space 21 is lower than the preset temperature, the temperature regulating mechanism can reduce the amount of heat discharged from the first accommodating space 21 to the outside, thereby bringing the temperature within the first accommodating space 21 within the preset temperature range.

[0040] By installing an insulation jacket 2 on the outside of the furnace body 1 to be insulated, the furnace body 1 to be insulated can be insulated outside the furnace and heat waste can be reduced; by setting a first accommodating space 21 and adjusting the temperature in the first accommodating space 21 through a temperature regulating mechanism, the insulation effect outside the furnace is controlled within a preset range, which can prevent the temperature in the first accommodating space 21 from being too low and thus failing to achieve the preset insulation effect, and can also prevent the temperature in the first accommodating space 21 from being too high and thus affecting the strength of the furnace body 1 to be insulated.

[0041] In some embodiments, the thermal insulation jacket 2 is an integrated thermal insulation jacket layer made of thermal insulation material; or, the thermal insulation jacket 2 includes a jacket layer and an insulation layer arranged on the inner side wall of the jacket layer, and a first accommodating space 21 is formed between the insulation layer and the outer wall of the furnace body 1 to be insulated.

[0042] When the thermal insulation jacket 2 is made of a thermal insulation material, the thermal insulation material may be aluminum silicate fiber, perlite, or the like. The thermal insulation jacket 2 is a one-piece piece formed from the thermal insulation material, which is easy to process and helps improve the thermal insulation effect. The thermal insulation jacket 2 is installed on the outside of the furnace body 1 to be insulated. Optionally, the two ends of the thermal insulation jacket 2 are sealed and connected to the two ends of the furnace body 1 to be insulated via high-temperature resistant sealing rings. Specifically, the inner ring of the high-temperature resistant sealing ring abuts against the furnace body 1 to be insulated, and the outer ring of the high-temperature resistant sealing member abuts against the thermal insulation jacket 2. Those skilled in the art can select and set the specific materials of the thermal insulation material and the high-temperature resistant sealing ring based on the maximum temperature of the furnace body 1 to be insulated.

[0043] By making the thermal insulation jacket 2 an integrated thermal insulation jacket layer made of thermal insulation material, the processing is simple and convenient, which is conducive to improving work efficiency.

[0044] When the thermal insulation jacket 2 is composed of a jacket layer and an insulation layer, optionally, the shape of the jacket layer is the same as the shape of the furnace body 1 to be insulated, which is convenient for installation. An insulation layer is provided on the inner side of the jacket layer close to the furnace body 1 to be insulated, and optionally, the insulation layer is bonded to the inner wall of the jacket layer. Optionally, the shape of the insulation layer is the same as the shape of the jacket layer, which is convenient for installation. The insulation layer is made of an insulation material, and the insulation material may be aluminum silicate fiber, perlite, or the like. A first accommodating space 21 is formed between the insulation layer and the outer wall of the furnace body 1 to be insulated, that is, the insulation layer is close to the outer wall of the furnace body 1 to be insulated. As for the specific materials of the insulation layer and the jacket layer, those skilled in the art can select and set them according to factors such as the limit temperature of the furnace body 1 to be insulated and the preset insulation range.

[0045] Providing the outer jacket layer and the heat-insulating layer on the inner wall of the outer jacket layer can help improve the applicability of the heat-insulating jacket 2 and reduce production costs.

[0046] In some embodiments, the temperature adjustment mechanism includes a controller, a temperature sensor 31 and a temperature adjustment component 32. The temperature sensor 31 is installed in the first accommodation space 21, and the temperature sensor 31 and the temperature adjustment component 32 are electrically connected to the controller respectively; the controller is configured to control the working state of the temperature adjustment component 32 according to the temperature detected by the temperature sensor 31, so that the temperature detected by the temperature sensor 31 is within a preset range.

[0047] Temperature sensor 31 is used to measure the temperature of the outer wall of furnace body 1 to be insulated. Optionally, temperature sensor 31 can be an infrared temperature sensor, which has stable performance and low cost. There can be one or more temperature sensors 31. Optionally, multiple temperature sensors 31 can be used to avoid large measurement errors due to accidental factors. When multiple temperature sensors 31 are used, the controller averages the measurement results of the multiple temperature sensors 31 as the final result to improve measurement accuracy.

[0048] The temperature adjustment assembly 32 can operate under the control of the controller. When the temperature detected by the temperature sensor 31 exceeds the maximum value of a preset range, the temperature adjustment assembly 32 increases the amount of heat discharged from the first accommodating space 21 to the outside, thereby keeping the temperature within the first accommodating space 21 within the preset range. When the temperature within the first accommodating space 21 does not reach the minimum value of the preset range, the temperature adjustment assembly 32 reduces the amount of heat discharged from the first accommodating space 21 to the outside, thereby keeping the temperature within the preset range. Those skilled in the art can select and set the specific model of the controller based on actual production conditions.

[0049] By setting a temperature sensor 31 to monitor the temperature in the first holding space 21, and using a controller to control the working state of the temperature regulating component 32 according to the temperature measured by the temperature sensor 31, the accuracy of the temperature regulating component 32 in regulating the furnace temperature is improved, thereby preventing the temperature of the furnace body 1 to be insulated from being too low and failing to achieve the preset insulation effect, and preventing the temperature of the furnace body 1 to be insulated from being too high and causing the strength of the furnace body 1 to be insulated to fail to meet the preset strength requirements.

[0050] In some embodiments, a plurality of temperature sensors 31 are provided, wherein at least one temperature sensor 31 is installed on the inner wall of the heat-insulating jacket 2; or, at least one temperature sensor 31 is installed on the outer wall of the furnace body 1 to be heat-insulated.

[0051] The number of temperature sensors 31 can be two, three, four, etc. The temperature sensor 31 is installed in the first accommodation space 21. Figure 1 and Figure 4 ,in, Figure 4 This is a schematic diagram of the structure of the heat preservation device and the furnace body to be heat-insulated provided in the third embodiment of the present invention. The temperature sensor 31 can be installed on the inner wall of the heat preservation jacket 2. Figure 3 This is a schematic structural diagram of a heat preservation device and a furnace body to be heat preserved provided in the second embodiment of the present invention. Figure 5 This is a schematic diagram of the structure of the heat preservation device and the furnace body to be heat-insulated provided in the fourth embodiment of the present invention. Figure 3 and Figure 5 The temperature sensor 31 can also be installed on the outer wall of the furnace body 1 to be kept warm.

[0052] For example, when the furnace body 1 to be heated rotates while working and the thermal insulation jacket 2 is fixed, the temperature sensor 31 is installed on the inner wall of the thermal insulation jacket 2 to prevent the rotation of the furnace body 1 to be heated from making the temperature sensor 31 unstable and causing inaccurate measurement results; for another example, when the furnace body 1 to be heated is fixed while working, the temperature sensor 31 is installed on the outer wall of the furnace body 1 to be heated, and the measurement accuracy is high.

[0053] Optionally, multiple temperature sensors 31 may be distributed in a matrix on the inner wall of the insulation jacket 2 or the outer wall of the furnace body 1 to be insulated. This allows the temperature to be measured at different locations on the outer wall of the furnace body 1 to be insulated within the first accommodation space 21, thereby improving the accuracy of temperature measurement. The specific number and model of the temperature sensors 31 can be selected and set by those skilled in the art based on factors such as the surface size of the furnace body 1 to be insulated, the measurement range of the temperature sensors 31, and the operating mode of the furnace body 1 to be insulated.

[0054] By providing multiple temperature sensors 31 and installing the multiple temperature sensors 31 at different positions on the inner wall of the insulation jacket 2 or the outer wall of the furnace body 1 to be insulated, the influence of accidental factors is avoided, which is conducive to improving the accuracy of the temperature measurement results.

[0055] In some embodiments, reference Figure 1 The temperature adjustment component 32 includes an exhaust duct 321 and an exhaust fan 322. The exhaust fan 322 is installed in the exhaust duct 321 and is electrically connected to the controller; the first accommodating space 21 is provided with an air inlet 211 and an air outlet 212, and the air outlet 212 is connected to the exhaust duct 321; the controller is configured to control the speed of the exhaust fan 322 according to the temperature detected by the temperature sensor 31.

[0056] Optionally, the exhaust duct 321 is a circular tube, which has a simple structure and is easy to manufacture. One end of the exhaust duct 321 is connected to the air outlet 212. Optionally, the air outlet 212 is also circular, and one end of the exhaust duct 321 is connected to the air outlet 212 via a sealing ring. An exhaust fan 322 is installed at the other end of the exhaust duct 321, and the exhaust duct 321 is connected to the outside. When the controller controls the exhaust fan 322 to operate, the exhaust fan 322 can extract the gas in the first storage space 21 to the outside.

[0057] There can be one or more air outlets 212; there can be one or more exhaust fans 322; each air outlet 212 can be provided with an exhaust fan 322, or a portion of the air outlets 212 can be provided with an exhaust fan 322. The number of air outlets 212, the number of exhaust fans 322, and the specific models of the exhaust fans 322 can be selected and set by those skilled in the art based on the size of the accommodation space 21.

[0058] The first storage space 21 is also provided with an air inlet 211. Optionally, the air outlet 211 can also be circular for easier processing. When the exhaust fan 322 draws air from the first storage space 21, the pressure inside the first storage space 21 decreases. External air enters the first storage space 21 through the air inlet 211, bringing the pressure inside the first storage space 21 to the same level as the pressure outside. Those skilled in the art can select and set the number of air inlets 211 based on the size of the storage space 21, the number of air outlets 212, and other factors.

[0059] By connecting the exhaust duct 321 with the air outlet 212 and arranging an exhaust fan 322 in the exhaust duct 321, it is beneficial to discharge the hot gas in the first accommodation space 21 and improve work efficiency; and the exhaust fan 322 is electrically connected through the controller, without manual operation, further improving work efficiency.

[0060] In some embodiments, there is a first gap between the thermal insulation jacket 2 and the furnace body to be insulated 1, and the first gap forms an air inlet 211; the air outlet 212 is arranged on the thermal insulation jacket 2; or, the thermal insulation jacket 2 and the furnace body to be insulated 1 are sealed and connected, and the air inlet 211 and the air outlet 212 are respectively arranged on the thermal insulation jacket 2.

[0061] A first gap is defined between the thermal jacket 2 and the furnace body 1 to be insulated. Optionally, the ends of the thermal jacket 2 are adjacent to the ends of the furnace body 1 to be insulated, resulting in two first gaps, i.e., two air inlets 211. The first gap can be annular, arc-shaped, or elongated. In this case, the air outlet 212 is provided on the thermal jacket 2, and the number of air outlets 212 can be one, two, or three. The air outlet 212 can be elongated, circular, or other shapes.

[0062] When both the air inlet 211 and the air outlet 212 are provided on the thermal jacket 2, the air inlet 211 and the air outlet 212 may optionally have the same shape for ease of processing; the number of air inlets 211 and the number of air outlets 212 may be the same or different. Optionally, a deflection baffle may be installed between the air inlet 211 and the air outlet 212 within the first storage space 21 to facilitate further diffusion of the gas entering through the air inlet 211 within the first storage space 21. Persons skilled in the art may select and set the number of air inlets 211 and the number of air outlets 212 based on the size of the first storage space 21, the specific model of the exhaust fan 322, and the like.

[0063] By making the first gap between the thermal insulation jacket 2 and the furnace body 1 to be insulated an air inlet 211, the structure is simple and the operation is convenient; when the thermal insulation jacket 2 and the furnace body 1 to be insulated are sealed, by making the air inlet 211 and the air outlet 212 respectively located at the two ends of the thermal insulation jacket 2, it is beneficial for the gas entering from the air inlet 211 to diffuse in the first accommodation space 21, thereby facilitating the heat exchange between the gas entering from the air inlet 211 and the gas in the first accommodation space 21, making the temperature change in the first accommodation space 21 more obvious.

[0064] In a specific implementation, the heat preservation device further includes a first heat exchanger 4 , which is configured to be able to exchange heat between its internal fluid medium and the gas in the first accommodating space 21 ; the first heat exchanger 4 is installed in the exhaust duct 321 .

[0065] The first heat exchanger 4 is installed in the exhaust duct 321. The first heat exchanger 4 can be located between the air outlet 212 and the exhaust fan 322, or between the exhaust fan 322 and the outlet. The gas in the first accommodation space 21 can be discharged through the first heat exchanger 4. Optionally, the first heat exchanger 4 is connected to other fluid devices via a pipeline. In other words, the first heat exchanger 4 has adjacent first and second fluid channels. The connection method between the first heat exchanger 4 and the exhaust duct 321 can be selected and set by those skilled in the art based on the specific structure and material of the exhaust duct 321.

[0066] When the gas in the first accommodating space 21 is discharged through the exhaust duct 321, the gas in the first accommodating space 21 passes through the first fluid channel, and at the same time, the fluid in other fluid equipment also passes through the second fluid channel. At this time, the gas in the first fluid channel and the fluid in the second fluid channel exchange heat.

[0067] By arranging the first heat exchanger 4 in the exhaust duct 321 , the gas exhausted from the first accommodating space 21 can exchange heat with the fluid in other fluid devices, so that the heat can be reused and heat waste is reduced.

[0068] In another specific implementation, the exhaust duct 321 includes a plurality of exhaust pipe sections, and the first heat exchanger 4 is installed between two of the exhaust pipe sections.

[0069] By arranging the first heat exchanger 4 between the two exhaust pipe sections, the gas exhausted from the first accommodating space 21 can exchange heat with the fluid in other fluid devices, so that the heat can be reused and heat waste is reduced.

[0070] In some embodiments, the temperature regulation component 32 includes a second storage space and a suction pump arranged in the thermal insulation jacket 2; the second storage space is provided with a liquid inlet and a liquid outlet, the liquid inlet is connected to the suction pump, and the suction pump is electrically connected to the controller; the controller is configured to control the rotation speed of the suction pump according to the temperature detected by the temperature sensor 31, so that the suction pump discharges the liquid in the second storage space from the liquid outlet.

[0071] The second storage space is located within the thermal jacket 2 and can accommodate liquid. Optionally, the liquid is water, which has a high heat absorption capacity and is low cost. The second storage space is provided with a liquid inlet, which is connected to a suction pump via a pipe. When the suction pump is in operation, the suction pump transfers external liquid into the second storage space through the liquid inlet. The second storage space is also provided with a liquid outlet for discharging the liquid.

[0072] When the temperature detected by the temperature sensor 31 exceeds the maximum value of the preset range, the controller controls the suction pump to accelerate operation, so that external liquid enters the second storage space through the liquid inlet, so that the liquid in the second storage space is accelerated to be discharged through the liquid outlet. When the liquid in the second storage space is accelerated to be discharged, it carries more heat, thereby causing the temperature in the second storage space to drop, thereby reducing the temperature in the first storage space 21, and further reducing the temperature of the furnace body to be kept warm 1. When the temperature detected by the temperature sensor 31 is lower than the minimum value of the preset range, the controller controls the suction pump to decelerate operation, so that the liquid in the second storage space is slowly discharged, thereby reducing the discharge of heat.

[0073] By setting up a second accommodating space and connecting it with the suction pump through a liquid inlet, the heat discharged from the furnace body 1 to be kept warm can be exchanged through the liquid, and the liquid has a large specific heat capacity, a strong ability to absorb heat, and an obvious temperature control effect; the operation of the suction pump is controlled by a controller, and no manual operation is required, so the work efficiency is high.

[0074] In some embodiments, the heat preservation device further includes a second heat exchanger, which is installed at the liquid outlet and is configured to be able to perform heat exchange between the internal fluid medium thereof and the liquid in the second accommodation space.

[0075] Optionally, the second heat exchanger is provided with a liquid outlet via a pipe. Optionally, the second heat exchanger has adjacent third and fourth fluid channels, the third fluid channel communicating with the second storage space via the liquid outlet, and the fourth fluid channel communicating with other fluid devices. When liquid in the second storage space is discharged through the liquid outlet, the liquid in the second storage space passes through the third fluid channel, while fluid in other fluid devices passes through the fourth fluid channel. At this point, the liquid in the third fluid channel exchanges heat with the fluid in the fourth fluid channel.

[0076] By arranging a second heat exchanger at the liquid outlet, the heat carried by the liquid in the second accommodation space can be reused, reducing heat waste; and the liquid has a large specific heat capacity and carries more heat, which is conducive to improving heat utilization.

[0077] In some embodiments, an embodiment of the present invention provides a high-temperature furnace, which includes a furnace body and the above-mentioned heat preservation device, and the heat preservation device is installed on the outside of the furnace body.

[0078] The high temperature furnace can be a fuel furnace or an electric furnace. The high temperature furnace includes a furnace body, Figure 1 and Figure 2 , the furnace body can be cylindrical; refer to Figure 3 The furnace body can also be trapezoidal, etc. A heat preservation device is installed outside the furnace body, and a first accommodation space 21 is defined between the heat preservation jacket 2 and the outer wall of the furnace body. When the temperature sensor 31 detects that the temperature of the outer wall of the furnace body exceeds a preset temperature, the controller controls the temperature adjustment component 32 to open or speed up its operation to accelerate the discharge of heat in the first accommodation space 21, thereby keeping the temperature of the outer wall of the furnace body within a preset range; when the temperature sensor 31 detects that the temperature of the outer wall of the furnace body is lower than a preset temperature, the controller controls the temperature adjustment component 32 to close or slow down its operation to reduce the discharge of heat in the first accommodation space 21, thereby improving the heat preservation effect.

[0079] By installing the above-mentioned insulation device on the outside of the furnace body, not only can the furnace body be insulated outside the furnace and heat waste can be reduced, but the insulation device is installed outside the furnace body and does not occupy the usable space inside the furnace body; and the insulation effect outside the furnace can be controlled within a preset range, avoiding the furnace body temperature being too low and failing to achieve the preset insulation effect, and avoiding the furnace body temperature being too high and causing the furnace body strength to fail to meet the preset strength requirements.

[0080] In the above description, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A heat preservation device, characterized in that: include: Thermal jacket and temperature regulation mechanism; The thermal insulation jacket is installed on the outside of the furnace body to be insulated, and a first accommodation space is formed between the thermal insulation jacket and the outer wall of the furnace body to be insulated; The temperature adjustment mechanism is configured to adjust the temperature in the first receiving space; The temperature adjustment mechanism includes a controller, a temperature sensor, and a temperature adjustment component. The temperature sensor is installed in the first accommodation space. The temperature sensor and the temperature adjustment component are electrically connected to the controller respectively. The controller is configured to control the working state of the temperature adjustment component according to the temperature detected by the temperature sensor, so that the temperature detected by the temperature sensor is within a preset range; When the temperature detected by the temperature sensor exceeds a maximum value of a preset range, the temperature adjustment component increases the amount of heat discharged from the first accommodation space to the outside, thereby adjusting the temperature in the first accommodation space to be within a preset range; When the temperature in the first accommodation space does not reach the minimum value of the preset range, the temperature adjustment component reduces the heat discharged from the first accommodation space to the outside, so that the temperature in the first accommodation space is within the preset range; The temperature adjustment assembly includes a second accommodation space provided in the thermal insulation jacket and a suction pump; the second accommodation space is provided with a liquid inlet and a liquid outlet, the liquid inlet is communicated with the suction pump, and the suction pump is electrically connected to the controller; The controller is configured to control the rotation speed of the suction pump according to the temperature detected by the temperature sensor, so that the suction pump discharges the liquid in the second receiving space from the liquid outlet; The heat preservation device further includes a second heat exchanger, which is installed at the liquid outlet and is configured to exchange heat between the fluid medium inside the second heat exchanger and the liquid in the second accommodation space; The temperature adjustment assembly includes an exhaust duct, and the heat preservation device further includes a first heat exchanger, and the first heat exchanger is installed in the exhaust duct; or the exhaust duct includes a plurality of exhaust duct sections, and the first heat exchanger is installed between two of the exhaust duct sections; The first heat exchanger is configured to be able to perform heat exchange between a fluid medium inside the first heat exchanger and gas in the first accommodation space.

2. The heat preservation device according to claim 1, characterized in that: The thermal insulation jacket is an integrated thermal insulation layer made of thermal insulation material; Alternatively, the thermal insulation jacket includes an outer jacket layer and an insulation layer arranged on the inner side wall of the outer jacket layer, and the first accommodating space is formed between the insulation layer and the outer wall of the furnace body to be insulated.

3. The heat preservation device according to claim 1, characterized in that: There are multiple temperature sensors, at least one of which is installed on the inner wall of the heat-insulating jacket; or at least one of which is installed on the outer wall of the furnace body to be kept warm.

4. The heat preservation device according to claim 1, characterized in that: The temperature adjustment assembly further includes an exhaust fan, which is installed in the exhaust duct and is electrically connected to the controller; The first accommodating space is provided with an air inlet and an air outlet, and the air outlet is connected to the exhaust duct; The controller is configured to control a rotation speed of the exhaust fan according to the temperature detected by the temperature sensor.

5. The heat preservation device according to claim 4, characterized in that: There is a first gap between the thermal insulation jacket and the furnace body to be kept warm, and the first gap forms the air inlet; the air outlet is provided on the thermal insulation jacket; Alternatively, the thermal insulation jacket is sealed to the furnace body to be insulated, and the air inlet and the air outlet are respectively arranged on the thermal insulation jacket.

6. A high temperature furnace, characterized in that: It comprises a furnace body and the heat preservation device according to any one of claims 1 to 5, wherein the heat preservation device is installed outside the furnace body.

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