A heating device for a tubular angle joint

Abstract

The utility model provides a kind of intersection line angle joint heating device. Including cylindrical heater and annular heater;Cylindrical heater is probed into the inside of cylindrical member, for the side heating of cylindrical member of intersection line angle joint;Annular heater is assembled by multiple arc heating pieces, and it is pasted on arc shell plate around cylindrical member outside in ring, for the side heating of arc shell plate of intersection line angle joint. Wherein, the outer diameter of cylindrical heater and the inner diameter of cylindrical member are matched with each other, the inner diameter of annular heater and the outer diameter of cylindrical member are matched with each other, the inside and outside of cylindrical heater and annular heater are combined, and it is closely fitted to carry out heating operation on intersection line angle joint weld. Cylindrical heater and annular heater are independently heated, when the temperature rising speed of cylindrical member and arc shell plate is inconsistent, cylindrical heater or annular heater heating is stopped alone, temperature rising speed is regulated, so that cylindrical member and arc shell plate are synchronously heated, and it is suitable to be used as a kind of intersection line angle joint heating device.

Description

Technical Field

[0001] This utility model relates to heating cylindrical components in the field of welding, and in particular to a heating device for intersecting corner joints. Background Technology

[0002] Currently, in the shipbuilding industry, the heating methods commonly used in welding processes include flame heating, electromagnetic induction heating, and far-infrared heating. Flame heating has advantages such as flexible operation and ease of use, and is suitable for heating smaller components or local preheating of large components. However, it is limited by the heating area of ​​a single flame, requiring multiple flame nozzles when heating large structures, which can easily lead to uneven heating of the components. Electromagnetic induction heating uses an alternating magnetic field to generate eddy currents in the metal, causing the metal to heat up itself. It has the characteristics of high heat conversion rate and rapid temperature rise. However, when heating thick plates, because it is an internal heating method, the internal temperature of the plate is higher than the surface temperature, which can easily lead to overheating and affect the material properties. Far-infrared heating is a radiation-type heating method that evenly distributes the heat source heat to the heating surface through a far-infrared ceramic layer. It has advantages such as no noise and no pollution, and is the main heating method for thick structures.

[0003] The above-mentioned technology has at least the following technical problems: Existing far-infrared heaters are mostly planar in structure, which provides good adhesion when heating straight welds; however, they have limitations when heating joints with more complex structures, especially circumferential welds and curved non-planar plates, where they cannot achieve complete adhesion to the surface to be heated. This is particularly true when heating corner joints, where a tight fit cannot be achieved. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies and address the problem that circumferential welds and curved non-planar plates cannot be fully fitted to the surface to be heated, this application provides a heating device for intersecting corner joints. This heating device uses a cylindrical heater inserted into the interior of a cylindrical component for heating, and a ring heater surrounding the cylindrical component and close to the intersecting corner joint weld, resulting in more uniform heating temperature and shorter heating time, thus solving the technical problem of achieving tight-fitting heating of the intersecting corner joint weld.

[0005] The solution adopted by the embodiments of this application to solve the technical problem is: A heating device for an intersecting corner joint includes a cylindrical heater and an annular heater; the cylindrical heater has a cylindrical structure and extends into the interior of the cylindrical component for heating the cylindrical component side of the intersecting corner joint; the annular heater has a split structure, which is assembled from multiple arc-shaped heating plates, surrounds the outside of the cylindrical component and is attached to the arc-shaped shell plate for heating the arc-shaped shell plate side of the intersecting corner joint. The outer diameter of the cylindrical heater matches the inner diameter of the cylindrical component, and the inner diameter of the annular heater matches the outer diameter of the cylindrical component. The cylindrical heater and the annular heater are combined internally and externally, and are tightly fitted to the corner joint weld seam of the intersection line for heating operations.

[0006] To further address the technical problems to be solved in the embodiments of this application, the cylindrical heater provided in this application has a cylindrical heating component, which is provided with a metal shell, a heat insulation layer, a heating element, and a far-infrared ceramic layer from the inside out. The upper and lower end faces are provided with metal shells, which are circular. The two circular metal shells at the end faces are fixed together by metal plates to prevent deformation of the far-infrared ceramic layer. The circular metal shell at the upper end face is connected to two hanging rods, which are connected to a crossbeam to fix the cylindrical heater.

[0007] Furthermore, the heating element of the annular heater is an arc-shaped heating plate, which consists of a heat insulation layer, a heating element, a far-infrared ceramic layer, and a metal shell, wherein the metal shell is arc-shaped; the arc-shaped heating plate is surrounded by an arc-shaped shell plate around the cylindrical component.

[0008] Furthermore, the arc-shaped heating elements are not rigidly fixed together.

[0009] Furthermore, in the heating components of the cylindrical heater and the annular heater, the heating element is a structural heat source with both ends connected to the power supply; the heat insulation layer isolates the heating element from the external environment, reducing heat loss; the far-infrared ceramic layer is in direct contact with the heated surface, making the heat source heat uniform and preventing overheating; the metal shell provides rigid support to avoid structural deformation.

[0010] Furthermore, the cylindrical heater and the annular heater heat independently. When the heating rates of the cylindrical component and the arc-shaped shell plate are different, the heating can be adjusted by separately shutting down the cylindrical heater or the annular heater.

[0011] Positive effects: The technical solutions provided in this application embodiment have at least the following technical effects or advantages: 1. Because the embodiments of this application adopt the technical means of heating the inside of the cylindrical component by means of a cylindrical heater and heating the weld seam of the intersecting corner joint by means of an arc-shaped heating plate surrounding the arc-shaped shell plate, the outer diameter of the cylindrical heater and the inner diameter of the annular heater are designed based on the inner diameter and outer diameter of the cylindrical component they surround, respectively. This effectively solves the technical problem of tight fitting and heating of the weld seam of the intersecting corner joint in the prior art. The cylindrical heater and the annular heater are combined with each other. After the heating device is assembled, it can be closer to the weld seam of the intersecting corner joint than the traditional heating device, thereby achieving the technical effect of better fitting of the intersecting corner joint and shorter heating time.

[0012] 2. Since the embodiments of this application adopt the technical means of inserting a cylindrical heater into the interior of the cylindrical component for heating, the interior of the cylindrical component is relatively sealed. By sealing the port of the cylindrical component, the airtightness is further improved, which effectively solves the technical problem of tight fitting and heating of the weld seam of the intersecting corner joint in the prior art. The cylindrical heater can reduce the gas flow inside the cylindrical component, thereby reducing heat loss, with fast heating speed and high heat utilization rate, thus achieving the technical effect of improving the heating speed of the intersecting corner joint.

[0013] 3. Since the embodiments of this application adopt a non-rigid fixed technique between the arc-shaped heating plates, the problem of tight fitting and heating of the weld seam of the intersecting corner joint in the prior art is effectively solved. The arc-shaped heating plates can be closely fitted to the weld seam of the intersecting corner joint for heating, with less heat loss, thereby achieving the technical effect of high heat utilization.

[0014] 4. Because the embodiments of this application adopt the technical means of independently heating with cylindrical heaters and annular heaters, the problem of tightly fitting and heating the weld seam of the intersecting corner joint in the prior art is effectively solved. When the heating rate of the cylindrical component and the arc shell plate is inconsistent, the heating of the cylindrical heater or the annular heater is stopped separately, and the heating rate is adjusted so that the cylindrical component and the arc shell plate are heated synchronously, thereby achieving a more uniform temperature heating effect for the weld seam of the intersecting corner joint.

[0015] It is suitable for use as a heating device for intersecting corner joints. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 Lay out the main view for this embodiment; Figure 2 A top view is provided for this embodiment; Figure 3 This is the front view of the cylindrical heater; Figure 4 This is a side view of a cylindrical heater. Figure 5 This is a top view of a cylindrical heater. Figure 6 This is the front view of the arc-shaped heating element; Figure 7 This is a side view of the arc-shaped heating element; Figure 8 This is a top view of the arc-shaped heating element; Figure 9 This is a cross-sectional view of the heating element in this embodiment.

[0018] In the picture: 1. Columnar heater; 2. Arc-shaped heating element; 3. Curved shell plate; 4. Cylindrical components; 5. Crossbeam; 6. Hanging rod; 7. Power supply; 8. Metal casing; 9. Far-infrared ceramic layer; 10. Metal sheet; 11. Insulation layer; 12. Heating element. Detailed Implementation

[0019] 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. Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0021] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0024] In the description of the embodiments in this application, the term "multiple" refers to two or more (including two). Similarly, "Multiple sets" refers to two or more sets (including two sets), and "multiple tablets" refers to two or more tablets (including two tablets).

[0025] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0026] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0027] This application provides a heating device for intersecting corner joints, which solves the problem in the prior art where thick, large-diameter cylindrical components penetrating an arc-shaped shell cannot be tightly fitted when heated. The heating device uses a cylindrical heater to heat the inside of the cylindrical component and an annular heater to surround the cylindrical component and approach the weld of the intersecting corner joint, thus achieving tight-fitting heating of the weld of the intersecting corner joint.

[0028] According to the instruction manual Figure 1-9 As shown, a heating device for an intersecting corner joint includes a cylindrical heater 1 and an annular heater; The cylindrical heater 1 has a cylindrical structure and extends into the interior of the cylindrical component 4 for heating the side of the cylindrical component 4 at the intersection angle joint. The annular heater has a split structure, which is assembled from multiple arc-shaped heating elements 2. It surrounds the cylindrical component 4 and is attached to the arc-shaped shell plate 3, and is used for heating the side of the arc-shaped shell plate 3 of the intersecting corner joint. The outer diameter of the cylindrical heater 1 matches the inner diameter of the cylindrical component 4, and the inner diameter of the annular heater 1 matches the outer diameter of the cylindrical component 4. The cylindrical heater 1 and the annular heater are combined internally and externally to tightly fit the weld seam of the intersecting corner joint for heating.

[0029] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages: Since the cylindrical component 4 is heated by the cylindrical heater 1, and the arc-shaped heating plate 2 is heated by the arc-shaped shell plate 3 surrounding the weld of the intersection corner joint, and the outer diameter of the cylindrical heater 1 and the inner diameter of the annular heater are designed based on the inner and outer diameters of the cylindrical component 4 they surround, the cylindrical heater 1 and the annular heater are combined with each other. After the heating device is assembled, it can be closer to the weld of the intersection corner joint than the traditional heating device, has better fit to the intersection corner joint, full coverage of the heating surface, no blind spots, and shorter heating time.

[0030] In a preferred embodiment, the heating element of the cylindrical heater 1 is a cylinder, and from the inside out are arranged a metal shell 8, a heat insulation layer 11, a heating element 12 and a far-infrared ceramic layer 9. The upper and lower end faces are provided with metal shells 8, wherein the metal shells 8 are circular, and the two circular metal shells 8 are fixed together by a metal plate 10 to prevent the far-infrared ceramic layer 9 from deforming. The circular metal shell 8 at the upper end face is connected to two hanging rods 6, and the hanging rods 6 are connected to a crossbeam 5 to fix the cylindrical heater 1.

[0031] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages: Since the cylindrical heater 1 extends into the cylindrical component 4 for heating, and the metal shell 8 is circular, the interior of the cylindrical component 4 is relatively sealed. The sealing performance is further improved by sealing the port of the cylindrical component 4. Therefore, the cylindrical heater 1 can reduce the gas flow inside the cylindrical component 4, thereby reducing heat loss, resulting in a fast heating rate and high heat utilization rate, thus improving the heating rate of the intersection corner joint.

[0032] In a preferred embodiment, the heating element of the annular heater is an arc-shaped heating element 2, which is composed of a heat insulation layer 11, a heating element 12, a far-infrared ceramic layer 9 and a metal shell 8, wherein the metal shell 8 is arc-shaped; the arc-shaped heating element 2 is surrounded by an arc-shaped shell plate 3 around the cylindrical component 4.

[0033] In a preferred embodiment, the arc-shaped heating elements 2 are non-rigidly fixed, which provides better adaptability to heated surfaces with a certain curvature. In this embodiment, the arc-shaped heating elements 2 are tightly bound around the outer diameter of the cylindrical component 4 by steel wire hoops.

[0034] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages: Because the arc-shaped heating elements 2 are not rigidly fixed, they can be closely attached to the weld seam of the intersection corner joint for heating, resulting in less heat loss and higher heat utilization.

[0035] In a preferred embodiment, in the heating components of the cylindrical heater 1 and the annular heater, the heating element 12 is a structural heat source, with both ends connected to the power supply 7; the heat insulation layer 11 blocks the heating element 12 from the external environment, reducing heat loss; the far-infrared ceramic layer 9 is in direct contact with the heated surface, making the heat source heat uniform and preventing overheating; the metal shell 8 provides rigid support to avoid structural deformation.

[0036] In a preferred embodiment, the cylindrical heater 1 and the annular heater are heated independently. When the heating rates of the cylindrical component 4 and the arc-shaped shell plate 3 are different, the heating is controlled by turning off the cylindrical heater 1 or the annular heater separately.

[0037] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages: Because the cylindrical component 4 and the arc-shaped shell plate 3 have different structures and thicknesses, their heating rates are usually inconsistent. Using existing right-angle heaters, both are heated simultaneously, which can easily cause overheating on one side of the joint and reduce the performance of the base material. In response to the above situation, this device regulates the heating rate by separately stopping the heating of the cylindrical heater 1 or the ring heater, so that the cylindrical component 4 and the arc-shaped shell plate 3 are heated simultaneously, and the temperature of the weld seam of the intersection corner joint is more uniform.

[0038] The working process of this embodiment: In the heating test of this embodiment, the wall thickness of the cylindrical component 4 is 65mm, and the thickness of the arc-shaped shell plate 3 connected to it is 45mm.

[0039] During the heating test, temperature measuring points were set at the top, bottom, left, and right centers of the cylindrical component 4, with two points at each center, located at a distance of 20 mm and 370 mm from the arc-shaped shell plate 3, respectively. Temperature measuring points were also set at the arc-shaped shell plate 3 corresponding to the top, bottom, left, and right centers of the cylindrical component 4, with two points at each center, located at a distance of 20 mm and 70 mm from the cylindrical component 4, respectively. The temperature was measured during the heating test, and the measured test data are shown in Table 1.

[0040] Table 1. Heating test data of intersecting corner joint welds

[0041] Based on the data in Table 1, it can be seen that the temperature distribution of the cylindrical component 4 and the arc-shaped shell plate 3 is uniform, and the temperature difference between each temperature measuring point is within 10℃. Due to the influence of structure and plate thickness, there is a difference in the heating rate between the cylindrical component 4 and the arc-shaped shell plate 3. However, the temperature difference between the two can be appropriately reduced through insulation, which can meet the construction requirements.

[0042] It is worth noting that all content not described in detail in the specification belongs to existing technology known to those skilled in the art, and the model parameters of the heating element 12 and the far-infrared ceramic heating layer 9 are not specifically limited and can be determined using conventional equipment. Electrical control components not mentioned in this technical solution are not shown in the figures because they belong to existing technology, and will not be described further here. The description of this utility model is given for illustrative and descriptive purposes only, and is not intended to be exhaustive or to limit the utility model to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

[0043] Finally, it should be noted that: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A heating device for an intersecting corner joint, characterized in that: Includes a cylindrical heater (1) and an annular heater; The cylindrical heater (1) has a cylindrical structure and extends into the interior of the cylindrical component (4) for heating the cylindrical component (4) side of the intersecting corner joint; The annular heater has a split structure and is assembled from multiple arc-shaped heating elements (2). It surrounds the cylindrical component (4) and is attached to the arc-shaped shell plate (3) for heating the arc-shaped shell plate (3) side of the intersection angle joint. Among them, the outer diameter of the cylindrical heater (1) matches the inner diameter of the cylindrical component (4), the inner diameter of the annular heater matches the outer diameter of the cylindrical component (4), and the cylindrical heater (1) and the annular heater are combined inside and out, closely fitting the weld seam of the intersection line corner joint for heating operation.

2. The intersecting corner joint heating device according to claim 1, characterized in that: The heating element of the cylindrical heater (1) is a cylinder, and from the inside out are arranged a metal shell (8), a heat insulation layer (11), a heating element (12) and a far-infrared ceramic layer (9); the upper and lower end faces are provided with metal shells (8), wherein the metal shells (8) are circular, and the two circular metal shells (8) are fixed together by a metal plate (10) to prevent the far-infrared ceramic layer (9) from deforming; the circular metal shell (8) on the upper end face is connected to two hanging rods (6), and the hanging rods (6) are connected to the crossbeam (5) to fix the cylindrical heater (1).

3. The intersecting corner joint heating device according to claim 1, characterized in that: The heating element of the ring heater is an arc-shaped heating plate (2). The arc-shaped heating plate (2) is composed of a heat insulation layer (11), a heating element (12), a far-infrared ceramic layer (9) and a metal shell (8). The metal shell (8) is arc-shaped. The arc-shaped heating plate (2) is surrounded by an arc-shaped shell plate (3) around the cylindrical component (4).

4. The intersecting corner joint heating device according to claim 1, characterized in that: The arc-shaped heating elements (2) are non-rigidly fixed together.

5. The intersecting corner joint heating device according to claim 1, characterized in that: In the heating components of the cylindrical heater (1) and the annular heater, the heating element (12) is the structural heat source, and its two ends are connected to the power supply (7); the heat insulation layer (11) blocks the heating element (12) from the external environment and reduces heat loss; the far-infrared ceramic layer (9) is in direct contact with the heated surface, so that the heat source heat is uniform and overheating is prevented; the metal shell (8) provides rigid support and avoids structural deformation.

6. The intersecting corner joint heating device according to claim 1, characterized in that: The cylindrical heater (1) and the annular heater are heated independently. When the heating rate of the cylindrical component (4) and the arc-shaped shell plate (3) is different, the heating rate can be adjusted by turning off the cylindrical heater (1) or the annular heater separately.

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