Heating furnace body
By combining a multi-layered insulation cavity design with temperature sensors, the problems of rapid heat loss and poor safety in the heating furnace body are solved, thereby improving the flexibility and safety of temperature control and reducing maintenance difficulty and production costs.
Patent Information
- Application Number
- CN202423278243.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-12-30
AI Technical Summary
The existing insulation structure of heating furnace bodies has problems such as rapid heat loss, inability to adapt to diverse process requirements, and poor safety, resulting in energy waste, high production costs, and numerous safety hazards.
It adopts a multi-layer thermal insulation cavity design, including an insulation shell, first to third insulation layers and heat dissipation copper pipes. Combined with temperature sensors and protective shells, it forms multiple thermal resistance defenses to adapt to different process requirements and improve safety and ease of maintenance.
It effectively reduces the outer surface temperature of the furnace body, reduces safety risks, improves the economy and maintainability of the equipment, enhances the flexibility of temperature control and the stability of the equipment, and reduces maintenance difficulty and production costs.
Smart Images
Figure CN223691515U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of heating furnace, specifically, relate to a heating furnace body. BACKGROUND
[0002] In the field of industrial heating furnaces, the development of furnace body insulation technology has gone through several stages and faces many challenges and limitations.
[0003] Early furnace body insulation only relies on simple single-layer insulation material to wrap the furnace body, such as asbestos, rock wool, etc. This method can reduce heat loss to some extent, but the insulation effect is very limited. In high-temperature industrial production, a large amount of heat will still be rapidly emitted to the surrounding environment through the thin insulation layer, resulting in low energy utilization. For example, in the steel smelting industry, due to poor furnace body insulation, fuel consumption far exceeds expectations, increasing production costs, and also causing serious heat pollution to the surrounding environment.
[0004] With the advancement of technology, some improved insulation structures have appeared, adopting a double-layer insulation design. However, these double-layer structures have many problems. First, there is a lack of effective integration and coordination between the two insulation layers, often just a simple stack, and heat can still be lost quickly through the gaps between the layers. Second, the double-layer structure performs poorly when dealing with thermal expansion and contraction of the furnace body. Due to the lack of a buffer mechanism, the furnace body is prone to stress concentration during temperature changes, causing the furnace body shell to deform and crack, affecting the service life of the furnace body and potentially causing safety accidents such as high-temperature gas leakage.
[0005] Moreover, traditional insulation structures have significant defects in versatility. Different industrial production processes have vastly different requirements for furnace temperature, ranging from a few hundred degrees Celsius to over a thousand degrees Celsius, and have different requirements for temperature stability and precision. However, traditional insulation structures are difficult to adjust flexibly to meet these diverse needs, and businesses often need to customize different furnace insulation devices for different processes, which undoubtedly increases equipment investment and production costs and reduces production efficiency.
[0006] In terms of safety, traditional insulation structures cannot effectively reduce the surface temperature of the furnace body, making it dangerous for operators to work around the furnace body. At the same time, the heat radiation from the high-temperature furnace body surface can also damage surrounding equipment, electrical lines, etc., increasing the probability of equipment failure and fire, and seriously threatening the safety of industrial production. INVENTION CONTENTS
[0007] The utility model provides a kind of heating furnace furnace body, solve the problem of poor safety of heating furnace furnace body in relevant technology.
[0008] The technical solution of the utility model is as follows:
[0009] A heating furnace body, comprising:
[0010] A fixed frame,
[0011] A heat preservation shell arranged on the fixed frame, the heat preservation shell forms a heating cavity,
[0012] A first isolation layer arranged on the fixed frame and located outside the heat preservation shell, a first temperature insulation cavity is formed between the first isolation layer and the heat preservation shell,
[0013] A second isolation layer arranged on the fixed frame and located outside the first isolation layer, a second temperature insulation cavity is formed between the first isolation layer and the second isolation layer,
[0014] A third isolation layer arranged on the fixed frame and located outside the second isolation layer, a third temperature insulation cavity is formed between the third isolation layer and the second isolation layer.
[0015] As a further technical solution, further comprising:
[0016] A heat dissipation copper pipe arranged in the second temperature insulation cavity,
[0017] A protective shell arranged on the third isolation layer and located outside the third isolation layer, a heat dissipation groove is formed between the protective shell and the third isolation layer.
[0018] As a further technical solution, the heat preservation shell has a fixing groove on the inside, the fixing groove has a fixing part for fixing a heating element.
[0019] As a further technical solution, further comprising:
[0020] A first temperature sensor arranged in the second temperature insulation cavity for detecting the temperature of the second temperature insulation cavity,
[0021] A second temperature sensor arranged in the heat dissipation groove for detecting the temperature of the outer wall of the third isolation layer.
[0022] As a further technical solution, further comprising:
[0023] A mounting partition plate arranged in the third temperature insulation cavity, the mounting partition plate is two, a mounting cavity is formed between the two mounting partition plates, and the heat dissipation copper pipe is inserted into the mounting cavity,
[0024] A circuit connecting piece sequentially penetrating the first isolation layer, the second isolation layer and extending to the heat preservation shell from the mounting cavity, for connecting the heating element with an external power supply.
[0025] The working principle and beneficial effects of the utility model are as follows:
[0026] In the utility model, the setting of the multi-layer temperature insulation cavity effectively reduces the outer surface temperature of the heating furnace body. In the industrial production site, if the high-temperature furnace body surface does not have good heat preservation and insulation measures, it is easy to cause safety accidents such as scalding of personnel, and may also have thermal radiation influence on the surrounding equipment, materials and the like, and even cause fire and other safety hazards. Through the heat insulation effect of the various isolation layers and the temperature insulation cavity, the outer surface temperature of the heating furnace body can be controlled within a relatively safe range, the safety risk caused by high temperature is reduced, the personal safety of the operating personnel and the safety of the surrounding environment are ensured, and the safety production requirement is met.
[0027] The setting of the various isolation layers and the temperature insulation cavity does not make the entire heat preservation structure too complex to maintain. On the contrary, the relatively independent and interrelated structure facilitates targeted maintenance and component replacement when problems occur. For example, if the heat insulation performance of the first isolation layer is found to be degraded or damaged, the maintenance personnel can relatively easily disassemble the fixing device at the location of the first isolation layer, remove the first isolation layer for replacement or repair, and will not cause excessive interference to other normal isolation layers, the heat preservation shell and the furnace body itself, greatly reducing the difficulty and workload of maintenance, shortening the maintenance time and reducing the influence on the normal operation of the furnace body. The layered structure design also facilitates regular inspection and maintenance of the heat insulation materials and the like in the various temperature insulation cavities. The heat insulation materials can be checked for aging, dampness, displacement and the like in a timely manner by reserving an inspection opening or opening the corresponding isolation layer at a suitable maintenance period, so that the use life of the entire heat preservation structure is prolonged, and the economy and cost performance of the equipment are improved. BRIEF DESCRIPTION OF DRAWINGS
[0028] The above-mentioned features, technical characteristics, advantages and implementation modes of the utility model will be further described in a clear and understandable manner in combination with the preferred embodiments and the drawings.
[0029] Fig. 1 is a sectional structure schematic view of the utility model;
[0030] Fig. 2 is an internal structure schematic view of the utility model;
[0031] Fig. 3 is a structure schematic view of the utility model;
[0032] In the figure: heat preservation shell-4, heating cavity-401, fixed groove-402, fixed part-403, fixed frame-5, first isolation layer-6, first temperature insulation cavity-601, second isolation layer-7, second temperature insulation cavity-701, third isolation layer-8, third temperature insulation cavity-801, heat dissipation copper pipe-9, protective shell-10, heat dissipation groove-1001, first temperature sensor-11, second temperature sensor-12, mounting partition-13, mounting cavity-1301, circuit connecting piece-14. DETAILED DESCRIPTION
[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, specific embodiments of the present application will be described below with reference to the drawings. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor, and other embodiments can also be obtained.
[0034] In order to make the drawing simple, only the parts related to the present application are shown in the drawings, which do not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some drawings, only one of the parts with the same structure or function is shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".
[0035] In this paper, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0036] In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0037] Reference Figs. 1-3For the first embodiment of the utility model, propose a kind of heating furnace body, including fixed bracket 5, heat preservation shell 4 is arranged on fixed bracket 5, heat preservation shell 4 forms heating cavity 401, first isolation layer 6 is arranged on fixed bracket 5, and located the outside of heat preservation shell 4, first isolation layer 6 and heat preservation shell 4 form first temperature insulation cavity 601, second isolation layer 7 is arranged on fixed bracket 5, and located the outside of first isolation layer 6, first isolation layer 6 and second isolation layer 7 form second temperature insulation cavity 701, third isolation layer 8 is arranged on fixed bracket 5, and located the outside of second isolation layer 7, third isolation layer 8 and second isolation layer 7 form third temperature insulation cavity 801.
[0038] In the embodiment, heat preservation shell 4 itself as the first line of defense directly wrapped furnace body, cooperates with each isolation layer, forms a complete and strict heat preservation and insulation system. Heat preservation shell 4 can block most of the heat emitted from the surface of furnace body, and each isolation layer further reduces the intensity of heat transfer to the outside. They are closely connected and there is temperature insulation cavity, which avoids the rapid loss of heat by conduction, convection and other methods. By setting first isolation layer 6, second isolation layer 7 and third isolation layer 8, first temperature insulation cavity 601, second temperature insulation cavity 701 and third temperature insulation cavity 801 are formed. This multi-layer temperature insulation design builds multiple thermal resistance defense lines. In the process of heat transfer from the inside of furnace body to the outside, the heat needs to break through the barriers formed by these temperature insulation cavities in turn. The heat transfer speed is greatly reduced after passing through each temperature insulation cavity. Moreover, different temperature insulation cavities can be optimized by using different heat insulation materials or heat insulation methods according to actual needs.
[0039] The existence of each temperature insulation cavity can buffer the temperature stress changes caused by thermal expansion and cold shrinkage of furnace body in different stages such as heating, heat preservation and cooling. When the furnace body is rapidly heated, each temperature insulation cavity can gradually absorb and disperse heat during the process of internal heat transfer to the outside, slow down the impact of temperature change on the structure of furnace body, avoid problems such as deformation and cracking of furnace body caused by rapid temperature change, further ensure the integrity of furnace body structure and long-term stable operation, and provide a solid structural foundation for reliable implementation of production process.
[0040] Because the heat preservation structure has good heat preservation and insulation performance and temperature stability, it can adapt to the requirements of various industrial production processes. Whether it is a special alloy smelting process that requires ultra-high temperature and long-time heat preservation, or an electronic component sintering process that requires high temperature precision, the heating furnace body can meet the specific needs of different processes for furnace temperature control by reasonably adjusting the parameters such as heat insulation material and thickness of each temperature insulation cavity.
[0041] The arrangement of the multi-layer temperature insulation cavity effectively reduces the temperature of the outer surface of the furnace body. In industrial production sites, the high-temperature surface of the furnace body can easily cause safety accidents such as burns to personnel, and can also have a thermal radiation effect on surrounding equipment and materials, and even cause fire hazards. Through the heat insulation effect of each isolation layer and the temperature insulation cavity, the temperature of the outer surface of the furnace body can be controlled within a relatively safe range, reducing the safety risks caused by high temperature, protecting the safety of operating personnel and the surrounding environment, and meeting the requirements of safety production.
[0042] The arrangement of each isolation layer and the temperature insulation cavity does not make the entire heat preservation structure too complex to maintain. On the contrary, their relatively independent and interrelated structure facilitates targeted maintenance and component replacement when problems occur. For example, if the heat insulation performance of the first isolation layer 6 is found to have decreased or is damaged, maintenance personnel can relatively easily disassemble the fixing device at the location of the first isolation layer 6 and remove the first isolation layer 6 for replacement or repair, without causing excessive interference to other normal isolation layers, the heat preservation shell 4, and the furnace body itself, greatly reducing the difficulty and workload of maintenance, shortening the repair time, and reducing the impact on the normal operation of the furnace body. This layered structure design also facilitates regular inspection and maintenance of the heat insulation materials inside each temperature insulation cavity. The heat insulation materials can be checked for aging, moisture, displacement, etc. through the reserved inspection port or by opening the corresponding isolation layer at the appropriate maintenance period, and timely treatment can be performed to ensure that each temperature insulation cavity always maintains good heat insulation performance, prolongs the service life of the entire heat preservation structure, and improves the economy and cost performance of the equipment.
[0043] Further, a heat dissipation copper pipe 9 is arranged in the second temperature insulation cavity 701, a protective shell 10 is arranged on the third isolation layer 8 and located outside the third isolation layer 8, and a heat dissipation groove 1001 is formed between the protective shell 10 and the third isolation layer 8.
[0044] In this embodiment, the heat dissipation copper pipe 9 is arranged in the second temperature insulation cavity 701, which provides an effective means for regulating the emission of heat from the furnace body. During the operation of the furnace body, although the heat preservation shell 4 and each isolation layer have heat insulation and heat preservation effects, there may still be a situation where too much heat needs to be dissipated. The heat dissipation copper pipe 9 can use the good thermal conductivity of copper to guide a portion of the heat from the surrounding of the furnace body with a higher temperature. The addition of cooling liquid inside can prevent the high temperature of the heat preservation shell 4 from causing burns to workers. Moreover, the arrangement of the heat dissipation copper pipe 9 can be adjusted according to different furnace body powers and production process requirements by reasonably designing the pipe diameter and winding density of the copper pipe, so as to adapt to various complex industrial furnace body heat dissipation requirements, thereby enhancing the flexibility and adaptability of the furnace body in temperature control.
[0045] The heat dissipation groove 1001 formed between the protective shell 10 and the third isolation layer 8 provides a suitable space for the final dissipation of heat. The part of the heat remaining after being conducted from the heat dissipation copper pipe 9 and passing through the third temperature isolation cavity 801 can be further dissipated to the external environment in the heat dissipation groove 1001 through natural convection, heat radiation and other ways. In actual application, the heat dissipation groove 1001 can avoid heat accumulation near the surface of the furnace body and further dissipate heat, so as to maintain the temperature of the outer surface of the furnace body of the heating furnace within a reasonable range, which is beneficial to safe production and prevents safety hazards such as scalding of personnel and fire caused by too high surface temperature, and makes the furnace body better adapt to the ambient temperature, avoiding affecting the normal operation of the equipment itself and the surrounding equipment due to the failure of heat dissipation.
[0046] The protective shell 10 is arranged on the third isolation layer 8, which provides an additional protective barrier for the furnace body of the heating furnace and the surrounding environment. On the one hand, it can prevent external objects from accidentally hitting the internal components such as the heat dissipation copper pipe 9 and the third isolation layer 8, and avoid damage to these components due to collision, affecting the heat dissipation and heat preservation functions. On the other hand, the protective shell 10 can also prevent personnel from accidentally touching the high-temperature heat dissipation components to a certain extent. Even if the heat dissipation copper pipe 9 has a high temperature during operation, with the shielding of the protective shell 10, the operating personnel are not easy to directly touch the high-temperature parts during normal operation, inspection and other processes, reducing the possibility of safety accidents such as scalding of personnel, and meeting the specification requirements of safe production, and creating a relatively safe working environment for the workers.
[0047] The heat dissipation copper pipe 9, the protective shell 10 and the heat dissipation groove 1001 cooperate with the heat preservation shell 4 and the isolation layers in the furnace body of the heating furnace and other components to jointly ensure the stable operation and safety of the equipment. The heat preservation shell 4 and the isolation layers focus on heat preservation and heat insulation to control the transmission and loss of heat, while the heat dissipation copper pipe 9 and the heat dissipation groove 1001 are responsible for reasonably dissipating excess heat when necessary, and the protective shell 10 protects the entire structure from external interference. This structure in which each component performs its own function and closely cooperates enables the furnace body to maintain a good state whether in the normal operation stage or in the face of temperature regulation, external interference and other situations, reduces equipment failure and downtime caused by temperature abnormalities, component damage and other problems, and improves the continuity and efficiency of industrial production.
[0048] Further, the heat preservation shell 4 has a fixing groove 402 on the inner side, and the fixing groove 402 has a fixing portion 403 for fixing the heating element.
[0049] In this embodiment, the heating element is a heating wire, and the fixed groove 402 and the fixed part 403 inside the heat preservation shell 4 provide a clear and convenient mounting position for the heating element. When installing the heating element, the operator only needs to place the heating element in the position defined by the fixed part 403, without the need to spend a lot of time to accurately measure and position, greatly improving the installation efficiency. Moreover, this fixed structure makes the installation position of the heating element more standardized and uniform, ensuring the uniformity of the heating area of the whole furnace body. Different heating elements can be evenly distributed inside the heat preservation shell 4 according to the setting of the fixed part 403, avoiding problems such as local overheating or insufficient heating caused by random installation, and helping to achieve uniform distribution of the temperature field in the furnace body, providing a good foundation for processes that require precise temperature control in industrial production, and ensuring the stability and consistency of product quality.
[0050] The fixed part 403 stably fixes the heating element. During the operation of the furnace body, whether it is subjected to the vibration of the equipment itself, the stress caused by thermal expansion and contraction, or other external interference, the heating element can be firmly fixed inside the heat preservation shell 4 and will not easily shift or loosen. Through the fixation of the fixed part 403, the heating element can stably play a heating role, ensuring the reliability and durability of the furnace body heating system and reducing the equipment failure risks caused by unstable installation of the heating element.
[0051] When the heating element needs to be maintained or replaced due to failure, damage, or performance decline, the design of the fixed groove 402 and the fixed part 403 makes the operation relatively simple. Maintenance personnel can easily determine the position of the heating element through the fixed part 403, and then perform disassembly and replacement work, shortening the maintenance time, reducing the impact on the normal operation of the furnace body, and improving the maintainability and usability of the equipment.
[0052] At the same time, this structure also facilitates regular inspection and debugging of the heating element. The corresponding access hole of the furnace body can be opened regularly to quickly locate each heating element through the fixed part 403, check its connection condition, working state, etc., and timely discover potential problems and handle them, ensuring that the heating system is always in good operating condition, prolonging the service life of the heating element, and reducing the operating cost of the equipment.
[0053] A stable heating element mounting structure also helps to reduce the problem of excessive local thermal stress of the furnace body caused by uneven heating. Uniform heating distribution makes the temperature change of each part of the whole furnace body relatively coordinated during the heating and cooling process, avoiding excessive stress difference caused by local overheating or overcooling, thereby protecting the furnace body structure, prolonging the service life of the furnace body, and ensuring the long-term stable and reliable operation of the furnace body.
[0054] Further, the first temperature sensor 11 is arranged in the second temperature insulation cavity 701 to detect the temperature of the second temperature insulation cavity 701, and the second temperature sensor 12 is arranged in the heat dissipation groove 1001 to detect the temperature of the outer wall of the third insulation layer 8.
[0055] In the embodiment, the first temperature sensor 11 is arranged in the second temperature insulation cavity 701 to obtain the temperature data of the temperature insulation cavity in real time and accurately. In the operation process of the industrial furnace body, the temperature conditions of different temperature insulation cavities have a key indication effect on the heat preservation and heat transfer of the whole furnace body. Through the monitoring of the temperature of the second temperature insulation cavity 701 by the first temperature sensor 11, the operator can clearly understand the intermediate link state of the heat dissipation of the furnace body. When the temperature of the second temperature insulation cavity 701 abnormally rises or falls, it is likely that the heat insulation performance of the furnace body of the heating furnace has changed or the balance of heat generation and dissipation in the furnace has been broken. At this time, the heating power, heat dissipation intensity and other parameters can be adjusted in time according to the data feedback by the sensor, so as to ensure that the temperature in the furnace always maintains in the range meeting the process requirements, and to ensure the stability and consistency of product quality. Long-term collection of data of the first temperature sensor 11 can also provide basis for process optimization. By analyzing the change law of these temperature data with time, different production batches and other factors, potential problems or improvable links can be found, such as whether the heat dissipation copper pipe 9 in the second temperature insulation cavity 701 needs to be replaced or the working state of the heat dissipation copper pipe 9 is confirmed, so as to continuously improve the production process, improve the production efficiency and reduce the production cost.
[0056] The second temperature sensor 12 is arranged in the heat dissipation groove 1001 to monitor the temperature of the outer wall of the third insulation layer 8, which is crucial to the safe operation of the furnace body and the stability of the whole heat preservation structure. The surface temperature of the furnace body is too high, which may cause safety accidents such as scalding the operator, causing the surrounding flammable materials to catch fire, etc., and may also imply that the heat preservation structure has a problem, such as poor heat insulation effect. By monitoring the temperature of the outer wall of the third insulation layer 8 in real time through the second temperature sensor 12, temperature abnormality can be found in time, and when the temperature approaches or exceeds the safety threshold, appropriate measures can be taken, such as strengthening heat dissipation, checking whether the heat preservation structure is damaged, etc., to effectively avoid the occurrence of safety hazards and ensure the safety of personnel and equipment in the production site.
[0057] In addition, the temperature data also helps to determine the performance state of the entire heat preservation structure. Under normal circumstances, the outer wall temperature of the third isolation layer 8 should be maintained in a relatively stable and reasonable range. If there is a large temperature fluctuation or a sustained deviation from the normal range, it indicates that the heat preservation structure may have problems such as damage to the heat insulation layer, poor heat dissipation, etc., so as to timely maintain and repair, ensure the long-term stable function of the furnace body, reduce equipment failure and downtime caused by temperature-related problems, and improve the continuity of industrial production.
[0058] The first temperature sensor 11 and the second temperature sensor 12 work together to form an effective fault warning mechanism. For example, if the first temperature sensor 11 detects a sudden and sharp rise in temperature in the second temperature cavity 701, and the second temperature sensor 12 shows that the outer wall temperature of the third isolation layer 8 also begins to rise rapidly, it may indicate that the heat dissipation copper pipe 9 has a blockage, damage, etc. fault, causing heat to be unable to be normally dissipated, accumulating in the temperature cavity and gradually conducting to the furnace body surface. Based on such temperature change trend, maintenance personnel can receive early warning information, and timely check and repair the heat dissipation copper pipe 9 and other related components before the problem worsens, avoiding more serious consequences such as furnace body overheating damage, long-term downtime, etc., reducing equipment maintenance cost and production loss.
[0059] Further, it also includes a mounting partition plate 13, the mounting partition plate 13 is arranged in the third temperature cavity 801, the mounting partition plate 13 is two, and a mounting cavity 1301 is formed between the two mounting partition plates 13, the heat dissipation copper pipe 9 is inserted into the mounting cavity 1301, and the circuit connecting piece 14 is sequentially penetrated through the first isolation layer 6, the second isolation layer 7 from the mounting cavity 1301 and extended to the heat preservation shell 4, for connecting the heating element with the external power supply.
[0060] In the embodiment, the two mounting partition plates 13 form a mounting cavity 1301 in the third temperature cavity 801, providing a special, relatively independent and orderly layout space for the circuit connecting piece 14. And the heat dissipation copper pipe 9 extends into the mounting cavity 1301. In an industrial furnace body, there are often numerous circuit connections for powering heating elements, transmitting control signals, etc. Without such regular installation space, circuit lines are easily distributed in a disorderly manner in the heat preservation structure, which is not only inconvenient for management and maintenance, but also has safety hazards such as mutual interference between lines, easy to be squeezed and worn by other components, etc. The mounting cavity 1301 formed by the mounting partition plate 13 can neatly accommodate various circuit lines, facilitating the arrangement and fixation of the lines, ensuring the clarity of the circuit system, and improving the rationality and standardization of the entire circuit layout. The heat dissipation copper pipe 9 ensures the environmental safety of the circuit elements.
[0061] Meanwhile, the installation cavity 1301 is in the third temperature insulation cavity 801 and is protected by the surrounding thermal insulation layer, so that the external high temperature, humidity, dust and other adverse environmental factors are less likely to affect the internal circuit connecting piece 14, so that the circuit connecting piece 14 can work in a relatively suitable temperature environment, avoiding problems such as aging and short circuit of the line insulation layer caused by high temperature, prolonging the service life of the circuit connecting piece 14 and ensuring the stability and reliability of the circuit system.
[0062] Since the circuit connecting piece 14 is received in the relatively closed and heat-insulated installation cavity 1301 and connected with other components through a reasonable penetration mode, the risk of safety accidents caused by circuit problems is greatly reduced. In an industrial environment, there are many factors such as high temperature and flammable materials. If the power line is exposed or arranged randomly, once an electric spark is generated due to line short circuit, a serious safety accident such as fire is likely to occur. The circuit layout design of the furnace body of the heating furnace effectively isolates the circuit connecting piece 14 from the high-temperature furnace body and the external environment. Even if a line fault occurs, it is not easy to cause a fire and other safety problems, ensuring the safety of personnel and equipment in the production site and meeting the requirements of safety production standards.
[0063] When the circuit connecting piece 14 fails, such as line breakage, poor contact and the like, based on the existing structure design, maintenance personnel can relatively easily perform maintenance and repair work. First, by opening the corresponding position in the third temperature insulation cavity 801, a detachable installation partition plate 13 or a reserved maintenance opening can be designed, so that the circuit connecting piece 14 in the installation cavity 1301 can be quickly located, and then the penetration path of the line can be followed to check the possible problem position for repair or replacement operation.
[0064] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced without departing from the spirit and scope of the present application, and all should be covered in the scope of the claims of the present application.
Claims
1. A furnace body of a heating furnace, characterized by comprising: It comprises: a fixed frame (5), a heat preservation shell (4) arranged on the fixed frame (5), the heat preservation shell (4) forms a heating cavity (401), a first isolation layer (6) arranged on the fixed frame (5) and located outside the heat preservation shell (4), the first isolation layer (6) and the heat preservation shell (4) form a first temperature insulation cavity (601), a second isolation layer (7) arranged on the fixed frame (5) and located outside the first isolation layer (6), the first isolation layer (6) and the second isolation layer (7) form a second temperature insulation cavity (701), a third isolation layer (8) arranged on the fixed frame (5) and located outside the second isolation layer (7), the third isolation layer (8) and the second isolation layer (7) form a third temperature insulation cavity (801).
2. A furnace body according to claim 1, wherein It also comprises: a heat dissipation copper pipe (9) arranged in the second temperature insulation cavity (701), a protective shell (10) arranged on the third isolation layer (8) and located outside the third isolation layer (8), the protective shell (10) and the third isolation layer (8) form a heat dissipation groove (1001).
3. A furnace body according to claim 2, wherein The heat preservation shell (4) has a fixing groove (402) on the inner side, the fixing groove (402) has a fixing part (403) for fixing a heating element.
4. A furnace body according to claim 2, wherein It also comprises: a first temperature sensor (11) arranged in the second temperature insulation cavity (701) for detecting the temperature of the second temperature insulation cavity (701), a second temperature sensor (12) arranged in the heat dissipation groove (1001) for detecting the temperature of the outer wall of the third isolation layer (8).
5. A furnace body according to claim 3, wherein It also comprises: a mounting partition plate (13) arranged in the third temperature insulation cavity (801), the mounting partition plate (13) is two, two mounting partition plates (13) form a mounting cavity (1301), the heat dissipation copper pipe (9) is inserted into the mounting cavity (1301), a circuit connecting piece (14) which is sequentially penetrated by the mounting cavity (1301), the first isolation layer (6), the second isolation layer (7) and extended to the heat preservation shell (4), for connecting the heating element with external power supply.