Furnace temperature tester heat insulation box for heat treatment equipment
By using a rectangular frame structure and movable baffle design, the problems of multi-point synchronous temperature measurement and instrument stability under high temperature environment in heat treatment equipment are solved, achieving stable positioning and accurate measurement under high temperature environment and reducing maintenance costs.
Patent Information
- Application Number
- CN202520543806.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-26
AI Technical Summary
Existing methods for detecting furnace temperature in heat treatment equipment suffer from several drawbacks: multi-point synchronous measurement is difficult to achieve, wireless data loggers are prone to damage in high-temperature environments, mismatch in frame thermal expansion leads to seal failure and weld cracking, and the positioning of the testing instrument becomes unstable, affecting measurement accuracy and safety.
It adopts a rectangular frame structure, with internal heat insulation components, movable baffles and angle steel components. Through long waist hole riveting and displacement compensation design, a multi-level thermal deformation adaptive system is formed to ensure the stable positioning of the testing instrument in high temperature environment.
It effectively resists thermal deformation and impact damage under high temperature environment, ensures stable positioning accuracy of the testing instrument in the furnace, improves the accuracy and safety of measurement results, and reduces maintenance costs.
Smart Images
Figure CN223841322U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of furnace temperature testing technology, specifically, it demonstrates a furnace temperature tester heat insulation box for heat treatment equipment. Background Technology
[0002] In industrial heat treatment fields such as aerospace, automobile manufacturing, and metal processing, the temperature uniformity of the furnace directly determines the quality of product heat treatment.
[0003] According to international standards such as AMS2750, heat treatment equipment must undergo temperature uniformity testing (TUS) regularly. The traditional testing methods mainly adopt two schemes: 1) inserting thermocouples into the pre-reserved test holes in the furnace body; 2) placing a wireless data logger inside the furnace chamber.
[0004] The first solution is limited by the furnace structure, making it difficult to achieve multi-point synchronous measurement. The second solution has the following technical problems: electronic equipment may experience component failure and battery explosion in high-temperature environments above 300°C, while data loggers (such as the British Datapaq furnace temperature tester, which costs over 100,000 yuan) will be permanently damaged within 5 minutes in a furnace at 600°C without protection.
[0005] Based on the second solution mentioned above, some technicians proposed using an insulated enclosure to protect the wireless data logger. However, currently, conventional heat treatment insulated enclosures simply use an integral welded frame. During installation, insulation cotton is placed between the data logger and the frame, and then external clamps are used to position and fix them. This method may cause the following problems under the high temperature of the furnace and quenching conditions:
[0006] 1. The frame exhibits thermal deformation.
[0007] Because the thermal expansion coefficients of the overall welded frame and the internal insulation material do not match, uneven deformation will occur during high-temperature cycling, resulting in failure of the enclosure seal and out-of-tolerance geometric dimensions, which directly affects the positioning accuracy of the testing instrument.
[0008] 2. Risk of cracking in welds on the frame
[0009] Under the intense thermal shock of high-temperature working environment and quenching conditions, the welded joint is subjected to alternating thermal stress, which will induce the propagation of microcracks, causing structural damage or even disintegration of the box.
[0010] 3. Instability in the positioning of the testing equipment
[0011] The testing equipment mainly relies on external clamps and compressed insulation cotton for fixation. Under the action of thermal vibration and material creep, it gradually loosens, causing the detection unit on it to deviate from the predetermined temperature measurement point, resulting in systematic measurement errors. Utility Model Content
[0012] The purpose of this invention is to provide a heat insulation box for a furnace temperature tester in heat treatment equipment. It has a simple and practical structure and can protect the tester from thermal shock damage inside the furnace.
[0013] The technical solution is as follows:
[0014] A heat insulation box for a furnace temperature tester in heat treatment equipment includes a rectangular frame, wherein:
[0015] The frame is internally equipped with heat-insulating components that provide heat insulation, and the space between the heat-insulating components is used to place the testing instrument. Baffles are provided on the outer sides of all six sides of the frame.
[0016] Each edge of the frame is provided with an angle steel member, which has a plate surface A and a plate surface B that are perpendicular to each other. The plate surface A of the angle steel member is movably riveted to the frame so that the angle steel member can slide slightly along the setting direction. There is a gap between the plate surface B of the angle steel member and the frame. The baffles on the remaining surfaces of the frame, except for the top and front surfaces, are all constrained by the plate surface B of the angle steel member.
[0017] The sides of the baffles on the top and front sides of the frame are detachably connected to the outside of the angle steel pieces.
[0018] Preferably, on the top and front surfaces of the frame, protruding positioning pins are provided on the plate surface A of the angle steel member, and pin holes for corresponding insertion of the positioning pins are provided on the side of the baffle. The positioning pins have limiting grooves for the movable insertion of R-type cotter pins. The deformation locking mechanism of the R-type cotter pins enables quick assembly and disassembly of the top and front baffles.
[0019] Preferably, the angle steel member has an elongated hole on its plate A, and the plate A of the angle steel member is riveted to the frame by rivets, with the middle part of the rivet located inside the elongated hole. The angle steel member and the frame are riveted together using an axial elongated hole, which allows the angle steel member to slide freely along the surface of the frame, thereby counteracting radial expansion.
[0020] Furthermore, on the bottom and rear surfaces of the frame: the rivet passes through the baffle and connects to the frame; the surface of the baffle has a through hole for the rivet to pass through, the size of which is larger than the size of the rivet's center. This allows for minor adjustments at the rivet joint due to thermal expansion and contraction.
[0021] Preferably, on the front surface of the frame, a notch is formed in the middle of the lower part of the baffle, and a reserved gap communicating with the notch is provided at a corresponding position on the heat insulation component for the thermocouple on the testing instrument to pass through. The reserved gap and notch are for the thermocouple wire.
[0022] Preferably, the surface of the baffle is provided with several through holes. This reduces the weight of the baffle and also allows for rapid drainage when passing through the quenching station.
[0023] Preferably, handles are provided on the upper side of the frame on both the front and rear sides. This allows for easy gripping of the handles to move the insulation box to the designated location.
[0024] Preferably, on the top and bottom surfaces of the frame, the two ends of the angle steel member's plate surface A are beveled. This facilitates installation and distinguishes the front and back of the angle steel.
[0025] Preferably, the frame is a cuboid frame structure composed of twelve prisms. This simplifies the connection between components, greatly improving assembly efficiency, and provides good load-bearing capacity.
[0026] Compared with existing technologies, the advantages of this invention are as follows: It employs a welded frame, combined with insulation components, movable baffles, and angle steel structures. Through elongated riveting and displacement compensation design, a multi-level adaptive thermal deformation system is formed. This design effectively resists thermal deformation and thermal shock damage to the insulation box under high-temperature environments, avoiding the sealing failure and weld cracking problems caused by mismatched thermal expansion coefficients in traditional integral welded frames. Testing instruments and other components can maintain stable positioning accuracy inside the insulation box, ensuring more accurate and reliable temperature uniformity test results. Attached Figure Description
[0027] Figure 1 This is an external schematic diagram of the heat insulation box of a furnace temperature tester for heat treatment equipment according to an embodiment of this utility model;
[0028] Figure 2 yes Figure 1 Disassembly diagram;
[0029] Figure 3 This is a schematic diagram of the frame according to an embodiment of the present invention;
[0030] Figure 4 This is a partial schematic diagram of a corner of the bottom surface of the heat insulation box according to an embodiment of this utility model;
[0031] Figure 5 This is a schematic diagram of the front part of the heat insulation box according to an embodiment of the present invention;
[0032] The relevant markings in the attached diagram are as follows: 10-frame, 20-insulation component, 30-baffle, 40-angle steel component; 11-prism, 12-handle; 21-reserved gap; 31-through hole, 32-notch, 33-pin hole, 34-perforation; 401-plate surface A, 402-plate surface B, 41-long slot, 42-rivet, 43-positioning pin, 431-limiting groove, 44-R-type cotter pin. Detailed Implementation
[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0034] Example:
[0035] Please see Figures 1 to 5 As shown in the figure. This embodiment proposes a heat insulation box for a furnace temperature tester in heat treatment equipment, mainly including a frame 10. This frame has a cuboid structure and is formed by twelve 304 stainless steel prisms 11 connected by intermittent welding to form a skeleton, thus forming the main load-bearing frame. Inside the frame 10, six heat insulation components 20 are placed to protect the tester. For example, heat insulation cotton is used. The six heat insulation cotton pieces correspond exactly to the six faces of the frame. When these six heat insulation cotton pieces are put together, they can form a cavity in the middle. This cavity is used to place equipment such as the tester. Baffles 30 are set on the outer side of each of the six faces of the frame 10. These six baffles can almost surround the outside of the frame. Correspondingly, the length, width, and height of the baffle on each face do not exceed the length, width, and height of the frame.
[0036] An angle steel member 40 is provided on each edge of the frame 10, that is, there are 12 angle steel members in total. Each angle steel member 40 has a plate surface A401 and a plate surface B402 that are perpendicular to each other. The plate surface A401 of the angle steel member 40 is used to be movably riveted to the prism 11 of the frame 10, so that the angle steel member can slide slightly along its installation direction. For example, the angle steel member installed on the horizontal prism of the frame can slide slightly along the length or width of the frame, and the angle steel member installed on the vertical prism of the frame can slide slightly along the height of the frame. A certain gap is left between the plate surface B402 of the angle steel member 40 and the surface of the prism 11 of the frame 10. This gap is not less than the thickness of the baffle. Among them, on the top and bottom surfaces of the frame, the two sides of the plate A of the eight angle steel pieces are sloping, which makes it easy to install and distinguish the front and back of the angle steel. The plate A and plate B of the four vertically arranged angle steel pieces on the frame are both designed in a long strip shape.
[0037] Excluding the top and front faces of the frame 10, the baffles 30 on the remaining four faces of the frame 10 are all constrained by the plate surface B 402 of the angle steel member 40. In other words, the arrangement on these four faces is such that all four sides of the baffle 30 are clamped to the plate surface B 402 of the angle steel member 40. Between 402 and the surface of the prism 11 of the frame 10, the baffles on these four surfaces are essentially movable installations. The baffles and angle steel pieces are compensated for displacement through gaps, allowing the components to fine-tune their deformation during thermal expansion and contraction. The four sides of the baffles 30 on the top and front surfaces of the frame 10 are detachably connected to the outer side of the angle steel pieces 40, which facilitates the installation and maintenance efficiency of the testing equipment. When the baffles warp and deform after prolonged use, the baffles on the top and front surfaces of the frame can be flexibly removed, while the baffles on the other four surfaces of the frame can be removed by disassembling the angle steel pieces, flattening the baffles, and then reassembling them. This eliminates the need to replace the entire enclosure, greatly reducing the maintenance cost and downtime of the insulation box.
[0038] In this embodiment, the riveting points for riveting the upper frame 10 of the heat insulation box to the angle steel piece 40 are distributed as follows: the four sides of the top surface of the heat insulation box, the four sides of the bottom surface of the heat insulation box, the two vertical sides of the back of the heat insulation box, and the two vertical sides of the front of the heat insulation box, while there are no riveting points on the left and right sides of the heat insulation box.
[0039] Regarding the detachable design of the two baffles on the top and front of the insulation box, specifically: several outwardly protruding vertical positioning pins 43 are equidistantly arranged along the length of the angle steel component 40 on its plate surface A401. Corresponding pin holes 33 are provided on the corresponding sides of the baffle 40 for the positioning pins 43 to be inserted. A limiting groove 431 is provided at the tail of the positioning pin 43 for the movable insertion of an R-type cotter pin 44. This R-type cotter pin enables quick assembly and disassembly of the baffle. Specifically, during baffle installation, simply align the baffle pin hole with the positioning pin on the angle steel component, press down, and the R-type cotter pin automatically engages in the limiting groove to limit the baffle's position. During baffle disassembly, simply move the pin tail lug on the R-type cotter pin, using elastic deformation to release the locking mechanism, thus separating the positioning pin on the angle steel component from the pin hole on the baffle. This design improves the installation efficiency of equipment such as testing instruments by more than 60%, while also ensuring the sealing performance of the enclosure to prevent damage during vibration.
[0040] Regarding the design of the movable riveting connection between the plate surface A401 of the angle steel member 40 on the heat insulation box and the frame 10, specifically: several elongated holes 41 are equidistantly arranged along the length direction of the plate surface A401 of the angle steel member 40. The plate surface A401 of the angle steel member 40 is riveted to the prism 11 of the frame 10 by rivets 42. The rivets 42 pass through the elongated holes 41, that is, the middle part of the rivet 42 is located inside the elongated holes 41. Under the action of external force, the angle steel member 40 can achieve relative sliding with the prism 11 of the frame 10 through the design of the elongated holes 41. In this way, the angle steel member and the frame are riveted by axial elongated holes, which allows the angle steel member to slide freely along the surface of the frame under the action of external force, thereby counteracting its radial expansion.
[0041] In the case of the bottom and rear of the heat insulation box, the rivet 42 needs to pass through the baffle 30 before it can be connected to the prism 11 of the frame 10. Therefore, a through hole 34 is opened on the surface of the baffle 30 to allow the end of the rivet 42 to pass through. The size of this through hole 34 is slightly larger than the size of the middle part of the rivet 42, that is, to ensure that there is an appropriate gap between the rivet and the through hole, so that the rivet joint can be finely adjusted to adapt to deformation when thermally expanding and contracting.
[0042] In this embodiment, at the front of the heat insulation box: a notch 32 is opened in the middle of the lower part of the baffle 30, and a reserved gap 21 that can communicate with the notch 32 is left at the corresponding position of the heat insulation component 20 inside the frame 10, for the use of the thermocouple wire on the tester.
[0043] In this embodiment, each baffle 30 has several arrayed through holes 31 on its surface. These through holes can reduce the weight of the baffle and also provide a rapid drainage effect when passing through the quenching station.
[0044] In addition, a pair of handles 12 can be installed on the front and rear sides of the top of the heat insulation box. The handles 12 are fixedly installed on the prisms 11 of the frame 10. Therefore, it is necessary to open grooves for the handles to be installed on the surface of the angle steel parts and baffles at the corresponding positions. The designed handles make it easier for staff to move the heat insulation box, which is more labor-saving.
[0045] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.
Claims
1. A heat insulation box for a furnace temperature tester in heat treatment equipment, comprising a rectangular frame (10), characterized in that: The frame (10) is provided with heat insulation components (20) that can provide heat insulation. The space between the heat insulation components (20) is used to place the testing instrument. Baffles (30) are provided on the outer sides of the six sides of the frame (10). Angle steel members (40) are provided on each edge of the frame (10). The angle steel members (40) have mutually perpendicular plate surfaces A (401) and B (402). The plate surface A (401) of the angle steel member 40 is movably riveted to the frame 10 so that the angle steel member 40 can slide slightly along the setting direction. There is a gap between the plate surface B (402) of the angle steel member 40 and the frame (10). The baffles (30) on the remaining surfaces of the frame (10) except for the top and front surfaces are all constrained by the plate surface B (402) of the angle steel member (40). The sides of the baffles (30) located on the top and front sides of the frame (10) are detachably connected to the outside of the angle steel piece (40).
2. The heat insulation box for a furnace temperature tester in heat treatment equipment according to claim 1, characterized in that, On the top and front surfaces of the frame (10): a protruding positioning pin (43) is provided on the plate surface A (401) of the angle steel member (40), and a pin hole (33) is provided on the side of the baffle (30) for the positioning pin (43) to be inserted accordingly. The positioning pin (43) has a limiting groove (431) for the R-type cotter pin (44) to be inserted movably.
3. The heat insulation box for a furnace temperature tester in heat treatment equipment according to claim 1, characterized in that, The angle steel member (40) has an elongated hole (41) on its plate surface A (401). The plate surface A (401) of the angle steel member (40) is riveted to the frame (10) by rivets (42), and the middle part of the rivets (42) is located in the elongated hole (41).
4. The heat insulation box for a furnace temperature tester in heat treatment equipment according to claim 3, characterized in that, On the bottom and rear surfaces of the frame (10): the rivet (42) passes through the baffle (30) and is connected to the frame (10). The surface of the baffle (30) is provided with a through hole (34) for the rivet (42) to pass through. The size of the through hole (34) is larger than the size of the middle part of the rivet (42).
5. The heat insulation box for a furnace temperature tester in heat treatment equipment according to claim 1, characterized in that, On the front surface of the frame (10): a notch (32) is provided in the middle of the lower part of the baffle (30), and a reserved gap (21) communicating with the notch (32) is provided in the corresponding position of the heat insulation member (20) for the thermocouple on the tester to pass through.
6. The heat insulation box for a furnace temperature tester in heat treatment equipment according to claim 1, characterized in that, The surface of the baffle (30) is provided with several through holes (31).
7. The heat insulation box for a furnace temperature tester in heat treatment equipment according to claim 1, characterized in that, Handles (12) are provided on the upper side of the frame (10) on the front and rear sides.
8. The heat insulation box for a furnace temperature tester in heat treatment equipment according to claim 1, characterized in that, On the top and bottom surfaces of the frame (10): the two sides of the plate surface A (401) of the angle steel member (40) are inclined.
9. The heat insulation box for a furnace temperature tester in heat treatment equipment according to claim 1, characterized in that, The frame (10) is a cuboid frame structure composed of twelve prisms (11).