Heating jacket for heating pipeline

Abstract

The utility model discloses a heating sleeve for a heating pipeline. The heating sleeve comprises a sheet-shaped flexible sleeve and a locking assembly arranged on the flexible sleeve, the locking assembly comprises a locking ring and a locking piece, when the flexible sleeve wraps the pipeline, one part of the locking piece penetrates through the locking ring and is detachably connected with the other part of the locking piece, so that the two opposite ends of the flexible sleeve are close to each other in the circumferential direction of the pipeline, and the inner surface of the flexible sleeve is attached to the pipeline and is in a wrapping state. The locking ring and the locking piece which form the locking assembly are arranged on the flexible sleeve, and in the locking process of the locking piece and the locking ring, the locking ring and the locking piece enable the two opposite ends of the flexible sleeve to move oppositely in the circumferential direction of the pipeline, so that the two opposite ends of the flexible sleeve are close to each other and finally can be in butt joint together; the peripheral side of the pipeline is wrapped, heat generated by the flexible sleeve is transmitted to all positions of the pipeline through direct contact with the pipeline, and all positions of the pipeline are evenly heated.

Description

Technical Field

[0001] The utility model belongs to the field of heating, and particularly relates to a heating sleeve for a heating pipeline. Background Art

[0002] When producing semiconductor wafers, gases such as silicon nitride and dichloroxylene or other liquid materials need to be transported through pipelines. Since materials such as silicon nitride and dichloroxylene are extremely easy to crystallize in a low-temperature environment, it is necessary to heat the pipelines of the semiconductor to ensure that the pipelines can stably transport the materials.

[0003] Currently, as shown in the attached drawings of this patent specification Figure 1 As shown, a flexible sleeve 100' with a heating function is usually wrapped outside the pipeline 500' to heat the pipeline 500'. During installation, the first wrapping end 110' and the second wrapping end 120' of the flexible sleeve 100' that come close to each other in the circumferential direction need to partially overlap, and the overlapping part of the two is bonded or buckled to lock the flexible sleeve 100' to maintain the wrapping of the pipeline 500'. However, because the flexible sleeve 100' has a certain thickness, when the first wrapping end 110' crosses the second wrapping end 120' and overlaps outside the second wrapping end 120', a large gap 130' will be generated between the first wrapping end 110' and the pipeline 500', so that the outer peripheral side of the pipeline 500' cannot be completely attached to the flexible sleeve 100'. The gap 130' will cause poor heat transfer effect between the corresponding part of the pipeline 500' with the gap 130' and the flexible sleeve 100', resulting in uneven heating of the outer peripheral side of the pipeline 500', and it is very easy to cause the temperature of some positions inside the pipeline 500' to not reach the temperature required for transporting materials, and then the materials crystallize inside the pipeline 500'. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a heating sleeve for a heating pipeline to solve the problem of uneven heating of the pipeline caused by the inability of the outer peripheral side of the pipeline to be completely attached to the heating sleeve.

[0005] To solve the above technical problem, the utility model adopts the following technical solution: A heating sleeve for a heating pipeline, the heating sleeve includes a sheet-shaped flexible sleeve and a locking assembly arranged on the flexible sleeve; the locking assembly includes a locking ring and a locking member. When the flexible sleeve wraps around the pipeline, a part of the locking member passes through the locking ring and is detachably connected to another part of the locking member, so that the opposite ends of the flexible sleeve approach each other along the circumferential direction of the pipeline, and the inner surface of the flexible sleeve fits the pipeline and is in a wrapped state. The technical solution has the following technical effects:

[0006] The utility model provides a locking ring and a locking piece constituting a locking assembly on the flexible sleeve, so that when the flexible sleeve is installed on the outer peripheral side of the pipeline, it is only necessary to first roll the flexible sleeve on the pipeline, and then pass the locking piece through the locking ring and lock it with the locking piece itself. During the locking process of the locking piece and the locking ring, the locking ring and the locking piece make the opposite ends of the flexible sleeve move toward each other along the circumference of the pipeline, so that the opposite ends of the flexible sleeve are close to each other and can finally be butted together. The whole operation process is simple, and the force between the locking piece and the locking ring can easily drive the whole flexible sleeve to roll and deform. After the locking piece and the locking ring are locked and positioned The opposite ends of the flexible sleeve can maintain a docking state under the limiting action of the locking assembly, forming a wrap around the outer peripheral side of the pipeline, so that each position of the outer wall of the pipeline is basically fitted with the flexible sleeve. The heat generated by the flexible sleeve is transferred to each position of the pipeline through direct contact with the pipeline, ensuring stable heat transfer of the flexible sleeve to various parts of the pipeline, thereby making the various parts of the pipeline heated evenly, avoiding the generation of a gap between the flexible sleeve and the outer wall of the pipeline to affect the heat transfer between the flexible sleeve and the pipeline, thereby avoiding crystallization of materials transmitted in the pipeline due to uneven heating of the pipeline, and ensuring stable transmission of materials in the pipeline.

[0007] In the above-mentioned heating sleeve for heating pipeline, the locking member includes a connecting belt and a fastening part arranged on the connecting belt, the connecting belt has a free end and a mounting end fixed on the flexible sleeve, the free end of the connecting belt passes through the locking ring and is detachably connected to itself through the fastening part, so that the opposite ends of the flexible sleeve are connected to each other. During installation, the free end of the connecting belt is first passed through the locking ring and then folded back. When the opposite ends of the flexible sleeve are close to each other, the folded free end is locked with the connecting belt itself through the fastening part, so that the free end of the connecting belt can be detachably connected to itself, so that the connecting belt and the locking ring can be detachably connected, so that the connecting belt and the locking ring are not easy to fall apart, not only there is basically no gap between the inner surface of the flexible sleeve and the pipeline, but also there is basically no gap between the opposite ends of the flexible sleeve, and the flexible sleeve is fully fitted with the pipeline for a good heating effect. When the flexible sleeve needs to be removed from the pipeline, it is only necessary to separate the free end of the connecting belt from the connecting belt and disengage from the locking ring, so that the flexible sleeve no longer hugs the pipeline, thereby realizing the separation between the flexible sleeve and the pipeline, and the installation and disassembly are convenient and simple.

[0008] In the above-mentioned heating sleeve for heating pipeline, the installation end of the connecting belt and the locking ring are respectively arranged at intervals on the flexible sleeve, and the free end of the connecting belt passes over the opposite ends of the flexible sleeve to be connected with the locking ring. By arranging the installation end of the connecting belt and the locking ring at intervals on the flexible sleeve, the connecting belt is set to a shorter length, so that locking with the locking ring can be achieved. When the connecting belt and the locking ring are locked, the connecting belt and the locking ring respectively pull the opposite ends of the flexible sleeve, so that the opposite ends of the flexible sleeve are pulled and maintained in a state of being connected.

[0009] In the above-mentioned heating sleeve for a heating pipeline, the locking ring is installed on the installation end of the connecting belt, and the free end of the connecting belt bypasses the flexible sleeve for one week to be connected to the locking ring. Both ends of the connecting belt are locked through the locking ring and the fastening part, so that the connecting belt surrounding the flexible sleeve maintains a state of tightly holding the flexible sleeve, preventing the flexible sleeve from loosening from the pipeline, making the inner surface of the flexible sleeve fit on the outer surface of the pipeline, and further enabling heat to be stably transmitted from the flexible sleeve to the pipeline, ensuring the temperature stability at each position of the pipeline. By applying pressure to the circumferential side of the flexible sleeve, the connecting belt limits the flexible sleeve. While the limiting effect is good, the local stress on the flexible sleeve is reduced, avoiding damage to the flexible sleeve due to excessive local stress.

[0010] In the above-mentioned heating sleeve for a heating pipeline, the fastening part is a magic tape; or, the fastening part is a snap fastener; or, the fastening part is a buckle. The structure is simple, facilitating processing, manufacturing, installation, and disassembly.

[0011] In the above-mentioned heating sleeve for a heating pipeline, the fastening part includes a first connecting piece and a second connecting piece that are spaced apart on the surface of the connecting belt facing away from the pipeline. When the first connecting piece passes through the locking ring and is detachably connected to the second connecting piece, the locking ring is located between the first connecting piece and the second connecting piece. During installation, pass the first connecting piece through the locking ring and align and connect it with the second connecting piece, and the installation between the connecting belt and the locking ring can be completed. At this time, the locking ring is in the space between the first connecting piece and the second connecting piece and abuts against the connecting belt. The setting of the first connecting piece and the second connecting piece can quickly install and position the connecting belt. When the first connecting piece and the second connecting piece are aligned and connected, the connecting belt is just locked with the locking ring to a position where the opposite ends of the flexible sleeve can remain butted, improving the installation efficiency. At the same time, when the connecting belt bends around the locking ring, the locking ring is in the position between the first connecting piece and the second connecting piece of the connecting belt, preventing the first connecting piece or the second connecting piece from hindering the bending of the connecting belt, and the operation is more labor-saving.

[0012] In the above-mentioned heating sleeve for a heating pipeline, the flexible sleeve includes a heating sheet with a heating element arranged inside and a heat-insulating sheet with a heat-insulating element arranged inside. The heating sheet and the heat-insulating sheet are separately arranged. When the heating sheet is wrapped around the pipeline, the heat-insulating sheet is wrapped around the outer peripheral side of the heating sheet, and the heating sheet and / or the heat-insulating sheet are provided with a locking assembly. By separately arranging the heating sheet and the heat-insulating sheet, when it is necessary to install the flexible sleeve on the outer side of the pipeline, first bend the heating sheet to wind it around the outer peripheral side of the pipeline. The heating sheet fits against the outer side wall of the pipeline to heat the pipeline. Then bend the heat-insulating sheet to wind it around the outer peripheral side of the heating sheet. The heat-insulating sheet fits against the outer peripheral side of the heating sheet to wrap the heating sheet. The heat-insulating sheet clamps the heating sheet between the heat-insulating sheet and the pipeline to reduce the heat dissipation rate, so that the pipeline reaches and maintains the temperature required for transporting gas or liquid materials. Compared with the flexible sleeve with heating and heat-insulating functions arranged integrally, the separately arranged heating sheet and heat-insulating sheet are thinner. When installed on the outer side of the pipeline, the heating sheet and the heat-insulating sheet are more likely to deform respectively, and the installation is more convenient and simple.

[0013] In the above-mentioned heating sleeve for a heating pipeline, there are multiple locking assemblies, and the multiple locking assemblies are arranged on the outer surface of the heating sheet. When the heating sheet is wrapped around the pipeline, the multiple locking assemblies are spaced apart along the axial direction of the pipeline. When the heating sheet is wrapped around the pipeline, the multiple locking areas formed by the multiple locking assemblies respectively have a better limiting and locking effect on each position of the heating sheet, so that the fitting effect between the flexible sleeve and the pipeline in the axial direction of the pipeline is good, and further the pipeline is heated more uniformly in the axial direction.

[0014] In the above-mentioned heating sleeve for a heating pipeline, the heating element is one of a resistance heating wire and a heating film, and the heat-insulating element is at least one of pre-oxidized fiber, PI cotton, glass fiber cotton, pre-oxidized fiber and foamed silica gel. Using a resistance heating wire makes the heating element heat up quickly and have a high heating efficiency; using a heating film makes the heating area of the heating element large and the heating of the pipeline more uniform; the heat-insulating element is one or more of pre-oxidized fiber, PI cotton, glass fiber cotton, pre-oxidized fiber and foamed silica gel, which can maintain the soft performance of the heat-insulating element to facilitate wrapping the heating sheet, and at the same time make the heat-insulating effect of the heat-insulating element good, reduce heat loss, and further ensure that most of the heat is used for the heat insulation of the pipeline, saving energy.

[0015] In the above-mentioned heating sleeve for a heating pipeline, the flexible sleeve is of an integral structure. The flexible sleeve includes a heating element and a heat-insulating element arranged from the inside to the outside, and the locking assembly is arranged on the outer surface of the flexible sleeve. The structure of the flexible sleeve is simplified and the installation steps of the flexible sleeve are reduced.

[0016] The features and advantages of the present utility model will be disclosed in detail in the following specific embodiments and drawings. Description of the Drawings

[0017] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0018] Figure 1 It is a schematic assembly diagram of a flexible sleeve and a pipeline in the prior art;

[0019] Figure 2 It is an assembly drawing of a flexible sleeve and a pipeline in the first embodiment;

[0020] Figure 3 It is a cross-sectional view of the flexible sleeve and the pipeline in the assembled state in the first embodiment;

[0021] Figure 4 It is Figure 3 An enlarged view of part A of

[0022] Figure 5 It is a schematic cross-sectional view when the heating sheet is assembled on the pipeline in the first embodiment;

[0023] Figure 6 It is a cross-sectional view of the flexible sleeve and the pipeline in the assembled state in the second embodiment;

[0024] Figure 7 It is a cross-sectional view of the flexible sleeve in the third embodiment.

[0025] Reference numerals:

[0026] 100, flexible sleeve;

[0027] 200, locking assembly; 210, locking ring; 220, locking member; 221, connecting band; 2211, free end; 2212, mounting end; 222, fastening portion; 2221, first connecting member; 2222, second connecting member;

[0028] 300, heating sheet; 310, heating element; 320, inner protective layer; 330, outer protective layer;

[0029] 400, heat preservation sheet; 410, heat preservation element; 420, inner heat preservation layer; 430, outer heat preservation layer;

[0030] 500, pipeline. Specific embodiments

[0031] The utility model proposes a heating sleeve for heating pipelines, the heating sleeve includes a sheet-like flexible sleeve and a locking assembly arranged on the flexible sleeve; the locking assembly includes a locking ring and a locking piece. When the flexible sleeve is wrapped on the pipeline, a part of the locking piece passes through the locking ring and is detachably connected to the other part of the locking piece, so that the opposite ends of the flexible sleeve are brought close to each other along the circumference of the pipeline, and the inner surface of the flexible sleeve fits the pipeline and is in a wrapped state. The utility model arranges a locking ring and a locking piece constituting the locking assembly on the flexible sleeve, so that when the flexible sleeve is installed on the outside of the pipeline, it is only necessary to first wrap the flexible sleeve on the pipeline, and then pass the locking piece through the locking ring and lock it with the locking piece itself. During the locking process of the locking piece and the locking ring, the locking ring and the locking piece make the opposite ends of the flexible sleeve move towards each other along the circumference of the pipeline, thereby making the opposite ends of the flexible sleeve close to each other and finally docked together. After the locking of the locking piece and the locking ring is completed, the opposite ends of the flexible sleeve are within the limit of the locking assembly. The flexible sleeve is connected to the outer wall of the pipeline and the heat generated by the flexible sleeve is transferred to various positions of the pipeline through direct contact with the pipeline, ensuring stable heat transfer from the flexible sleeve to various parts of the pipeline, thereby making the pipeline evenly heated, avoiding the formation of a gap between the flexible sleeve and the outer wall of the pipeline to affect the heat transfer between the flexible sleeve and the pipeline, thereby avoiding crystallization of materials transported in the pipeline due to uneven heating of the pipeline, and ensuring stable transmission of materials in the pipeline.

[0032] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more, unless otherwise clearly defined.

[0035] In the present utility model, unless otherwise clearly specified and defined, the terms such as "mounted", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0037] Embodiment 1:

[0038] A heating sleeve for a heating pipeline, such as Figures 2 to 5As shown, the heating sleeve includes a flexible sleeve 100 and a locking assembly 200. The flexible sleeve 100 is sheet-shaped and can be bent and deformed. The flexible sleeve 100 can be wrapped around the outer peripheral side of a semiconductor pipeline 500 used for transmitting materials such as silicon nitride and dichloroxylene gas by bending and deformation. The heating sleeve generally heats the semiconductor pipeline 500 to about 200°C. The locking assembly 200 is arranged on the flexible sleeve 100, and the locking assembly 200 includes a locking ring 210 and a locking piece 220. When the flexible sleeve 100 is wrapped around the pipeline 500, the locking ring 210 and the locking piece 220 are located on the outside of the flexible sleeve 100. After a part of the locking piece 220 passes through the locking ring 210, it is detachably connected to the other part of the locking piece 220. The locking assembly 200 acts on the outside of the flexible sleeve 100 to keep the flexible sleeve 100 wound on the outside of the pipeline 500, so that the opposite ends of the flexible sleeve 100 are brought closer to each other and docked together along the circumference of the pipeline 500, and the inner surface of the flexible sleeve 100 is attached to the outer wall of the pipeline 500 to wrap the circumference of the pipeline 500.

[0039] The utility model provides a locking ring 210 and a locking piece 220 constituting a locking assembly 200 on the flexible sleeve 100, so that when the flexible sleeve 100 is installed on the outside of the pipeline 500, it is only necessary to first wrap the flexible sleeve 100 around the pipeline 500, and then pass the locking piece 220 through the locking ring 210 and lock it with the locking piece 220 itself. During the locking process of the locking piece 220 and the locking ring 210, the locking ring 210 and the locking piece 220 are pulled by the force to pull the opposite ends of the flexible sleeve 100 to move toward each other along the circumferential direction of the pipeline 500, thereby making the opposite ends of the flexible sleeve 100 approach each other and finally butt together. After the locking piece 220 and the locking ring 210 are locked, the opposite ends of the flexible sleeve 100 are in the locking assembly. Under the limiting effect of the component 200, the docking state can be maintained, and the outer peripheral side of the pipeline 500 is wrapped, so that each position of the outer wall of the pipeline 500 is basically fitted with the flexible sleeve 100. The heat generated by the flexible sleeve 100 is transferred to each position of the pipeline 500 through direct contact with the pipeline 500, ensuring the stable heat transfer of the flexible sleeve 100 to each part of the pipeline 500, so that each part of the pipeline 500 is heated evenly, avoiding the generation of a gap between the inner surface of the flexible sleeve 100 and the outer wall of the pipeline 500 to affect the heat transfer between the flexible sleeve 100 and the pipeline 500, thereby avoiding the crystallization of the material transported in the pipeline 500 due to the uneven heating of the pipeline 500, and ensuring the stable transmission of the material in the pipeline 500.

[0040] like Figure 3 and 5As shown, in this embodiment, the locking member 220 includes a connecting band 221 and a fastening portion 222. The fastening portion 222 is provided on the connecting band 221. The two ends of the connecting band 221 are respectively an installation end 2212 and a free end 2211. The installation end 2212 is fixed to the flexible sleeve 100. During installation, the free end 2211 of the connecting band 221 is first passed through the locking ring 210 and then folded back. The folded-back free end 2211 is locked to the connecting band 221 itself through the fastening portion 222, so that the detachable connection between the free end 2211 of the connecting band 221 and itself can be realized, and the detachable connection between the connecting band 221 and the locking ring 210 can be achieved. When it is necessary to detach the flexible sleeve 100 from the pipeline 500, only by separating the free end 2211 of the connecting band 221 from the connecting band 221 and disengaging it from the locking ring 210, the flexible sleeve 100 can be made not to hold the pipeline 500 tightly anymore, and thus the separation between the flexible sleeve 100 and the pipeline 500 can be realized. The installation and disassembly are convenient and simple. Preferably, the fastening portion 222 is one of a magic tape, a snap button, and a buckle, with a simple structure and convenient for installation and disassembly.

[0041] As Figure 4 shown, the fastening portion 222 includes a first connecting member 2221 and a second connecting member 2222. Both the first connecting member 2221 and the second connecting member 2222 are provided on the surface of the connecting band 221 facing away from the pipeline 500. The first connecting member 2221 and the second connecting member 2222 are spaced apart on the connecting band 221 to leave a space between the first connecting member 2221 and the second connecting member 2222. During installation, the first connecting member 2221 is passed through the locking ring 210 and aligned with the second connecting member 2222 and connected, and the installation between the connecting band 221 and the locking ring 210 can be completed. At this time, the locking ring 210 is located in the space between the first connecting member 2221 and the second connecting member 2222 and abuts against the connecting band 221. The settings of the first connecting member 2221 and the second connecting member 2222 can quickly install and position the connecting band 221. When the first connecting member 2221 and the second connecting member 2222 are aligned and connected, the connecting band 221 is just locked with the locking ring 210 to a position where the opposite ends of the flexible sleeve 100 can be kept butted, improving the installation efficiency. At the same time, when the connecting band 221 is bent around the locking ring 210, the locking ring 210 is located at the position between the first connecting member 2221 and the second connecting member 2222 of the connecting band 221, avoiding the first connecting member 2221 or the second connecting member 2222 from hindering the bending of the connecting band 221, and the operation is more labor-saving.

[0042] As Figure 5As shown, in this embodiment, the mounting end 2212 of the connecting belt 221 and the locking ring 210 are respectively arranged at intervals on the outer surface of the flexible sleeve 100. That is, the mounting end 2212 of the connecting belt 221 and the locking ring 210 are respectively arranged on the outer side walls of the two ends of the flexible sleeve 100 that are close to each other. During installation, after the free end 2211 of the connecting belt 221 crosses the abutting position of the opposite ends of the flexible sleeve 100, it first passes through the locking ring 210 and then is folded back. The folded free end 2211 is locked with the connecting belt 221 itself through the fastening part 222. By arranging the mounting end 2212 of the connecting belt 221 and the locking ring 210 at intervals on the outer surface of the flexible sleeve 100, a shorter length of the connecting belt 221 can be used to achieve locking with the locking ring 210. When the connecting belt 221 is locked with the locking ring 210, the connecting belt 221 and the locking ring 210 respectively pull the opposite ends of the flexible sleeve 100, so that the opposite ends of the flexible sleeve 100 are pulled to maintain the butt-jointed state, saving materials.

[0043] The flexible sleeve 100 in this embodiment includes a heating sheet 300 and a heat insulation sheet 400. The heating sheet 300 includes a heating element 310, an inner protective layer 320, and an outer protective layer 330. The edges of the inner protective layer 320 and the outer protective layer 330 are connected to form a cavity therebetween. The heating element 310 is encapsulated in the cavity formed by the inner protective layer 320 and the outer protective layer 330 to protect the heating element 310. The heat insulation sheet 400 includes a heat insulation element 410, an inner heat insulation layer 420, and an outer heat insulation layer 430. The edges of the inner heat insulation layer 420 and the outer heat insulation layer 430 are connected to form a cavity therebetween. The heat insulation element 410 is encapsulated in the cavity formed by the inner heat insulation layer 420 and the outer heat insulation layer 430. The heating sheet 300 and the heat insulation sheet 400 are separately arranged. When the flexible sleeve 100 needs to be installed on the outer side of the pipeline 500, first bend the heating sheet 300 to wind it around the outer peripheral side of the pipeline 500. The heating sheet 300 is attached to the outer side wall of the pipeline 500 for heating the pipeline 500. Then bend the heat insulation sheet 400 to wind it around the outer peripheral side of the heating sheet 300. The heat insulation sheet 400 is attached to the outer peripheral side of the heating sheet 300 to wrap the heating sheet 300. The heat insulation sheet 400 clamps the heating sheet 300 between the heat insulation sheet 400 and the pipeline 500 to reduce the heat dissipation speed of the heating sheet 300, so that the pipeline 500 reaches and maintains the temperature required for transporting gas or liquid materials. Compared with the flexible sleeve 100 with integrated heating and heat insulation functions, the separately arranged heating sheet 300 and heat insulation sheet 400 are thinner. When installed on the outer side of the pipeline 500, the heating sheet 300 and the heat insulation sheet 400 are more likely to deform respectively, and the installation is more convenient and simple. Of course, it can be understood that the flexible sleeve 100 in this embodiment may also only include the heating sheet 300, and the locking assembly 200 is arranged on the heating sheet 300.

[0044] In this embodiment, locking components 200 are respectively arranged on the outer side walls of the heating sheet 300 and the heat insulation sheet 400. The locking components 200 respectively lock the heating sheet 300 and the heat insulation sheet 400. During installation, the heating sheet 300 can be first held tightly on the pipeline 500 through the locking component 200 on the heating sheet 300, and then the heat insulation sheet 400 can be held tightly on the heating sheet 300 through the locking component 200 on the heat insulation sheet 400, without the need to manually hold the heating sheet 300 tightly on the pipeline 500 when installing the heat insulation sheet 400, reducing the assembly difficulty and improving the assembly efficiency. At the same time, the setting of the two locking components 200 enables the heating sheet 300 to be closely attached to the outer side wall of the pipeline 500, and the heat insulation sheet 400 to be closely attached to the outer side wall of the heating sheet 300. The heating sheet 300 can be attached to the outer peripheral side of the pipeline 500 to heat the pipeline 500, improving the heat transfer effect between the flexible sleeve 100 and the pipeline 500, making the outer peripheral side of the pipeline 500 uniformly heated, avoiding crystallization of the material transported in the pipeline 500, and ensuring the stable transmission of the material in the pipeline 500. The heat insulation sheet 400 can be attached to the heating sheet 300 to avoid the rapid dissipation of the heat of the heating sheet 300 through the gap between the heat insulation sheet 400 and the heating sheet 300, enhancing the heat insulation effect. Of course, it can be understood that the locking component 200 can also be only arranged on the outer side wall of the heating sheet 300, and the heat insulation sheet 400 is kept in a wound state through other locking structures; or the locking component 200 can be only arranged on the outer side wall of the heat insulation sheet 400. When the locking component 200 is locked to make the two ends of the heat insulation sheet 400 approach to hold the heating sheet 300 tightly, the heating sheet 300 is wound around the outer peripheral side of the pipeline 500 under the holding force of the heat insulation sheet 400 to realize the holding of the heating sheet 300 on the pipeline 500, simplifying the structure of the flexible sleeve 100 and reducing the production cost of the flexible sleeve 100.

[0045] The locking component 200 on the heating sheet 300 or the heat insulation sheet 400 can be provided with one or multiple (two or more). Preferably, multiple locking components 200 are provided. When the heating sheet 300 is wrapped around the pipeline 500, the multiple locking components 200 are arranged on the outer surface of the heating sheet 300 and are spaced along the length direction of the heating sheet 300 (i.e., the axial direction of the pipeline 500). The multiple locking components 200 can lock and limit each position in the length direction of the heating sheet 300 to form a locking area, with a better locking effect, enabling the flexible sleeve 100 to have a better fitting effect with the pipeline 500 in the axial direction of the pipeline 500, and further making the pipeline 500 heated more uniformly in the axial direction.

[0046] The heating element 310 in this embodiment may be a resistance heating wire. Using a resistance heating wire enables the heating element 310 to heat up quickly and have high heating efficiency. Of course, the heating element 310 may also be a heating film. Using a heating film makes the heating area of the heating element 310 large, and the heating of the pipeline 500 is more uniform. The heat insulation member 410 may be made of one or more of pre-oxidized fiber, PI cotton (polyimide cotton), fiberglass cotton, pre-oxidized fiber, and foamed silica gel. Making the heat insulation member 410 with the above materials can maintain the soft performance of the heat insulation member 410 for easy wrapping of the heating sheet 300. At the same time, the heat insulation effect of the heat insulation member 410 is good, reducing heat loss, and thus ensuring that most of the heat is used for the heating and heat insulation of the pipeline 500, saving energy.

[0047] Embodiment Two:

[0048] The difference between this embodiment and Embodiment One is that, as Figure 6 shown, in this embodiment, the locking ring 210 is installed on the installation end 2212 of the connecting belt 221. The free end 2211 of the connecting belt 221 bypasses one week of the flexible sleeve 100 and then passes through the locking ring, and then the connecting belt 221 is folded back so that the free end 2211 of the connecting belt 221 is locked with itself through the fastening portion 222. That is, both ends of the connecting belt 221 are locked through the locking ring 210 and the fastening portion 222 to keep the connecting belt 221 surrounding the flexible sleeve 100 in a state of tightly holding the flexible sleeve 100, preventing the flexible sleeve 100 from loosening from the pipeline 500, making the inner surface of the flexible sleeve fit on the outer surface of the pipeline 500, and thus enabling heat to be stably transmitted from the flexible sleeve 100 to the pipeline 500, ensuring the temperature stability at each position of the pipeline. By applying pressure to the circumferential side of the flexible sleeve 100, the connecting belt 221 realizes the limitation of the flexible sleeve 100. While having a good limiting effect, it reduces the local stress on the flexible sleeve 100 and prevents the flexible sleeve 100 from being damaged due to excessive local stress.

[0049] Embodiment Three:

[0050] The difference between this embodiment and Embodiment One is that, as Figure 7 shown, in this embodiment, the flexible sleeve is an integral structure. The flexible sleeve includes a heating element and a heat insulation member arranged from the inside to the outside, and the locking assembly is arranged on the outer surface of the flexible sleeve, simplifying the structure of the flexible sleeve and reducing the installation steps of the flexible sleeve.

[0051] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. A heating sleeve for a heating pipeline, characterized in that: The heating sleeve includes a sheet-shaped flexible sleeve and a locking assembly provided on the flexible sleeve; the locking assembly includes a locking ring and a locking member. When the flexible sleeve wraps around the pipeline, a part of the locking member passes through the locking ring and is detachably connected to another part of the locking member, so that the opposite ends of the flexible sleeve approach each other circumferentially along the pipeline, and the inner surface of the flexible sleeve fits the pipeline and is in a wrapped state.

2. The heating sleeve for a heating pipeline according to claim 1, wherein: The locking member includes a connecting belt and a fastening portion provided on the connecting belt. The connecting belt has a free end and a mounting end fixed on the flexible sleeve. The free end of the connecting belt passes through the locking ring and is detachably connected to itself through the fastening portion, so that the opposite ends of the flexible sleeve are butted against each other.

3. The heating sleeve for a heating pipeline according to claim 2, characterized in that: The mounting end of the connecting belt and the locking ring are respectively arranged on the flexible sleeve at intervals, and the free end of the connecting belt passes over the opposite ends of the flexible sleeve to be connected to the locking ring.

4. The heating sleeve for a heating pipeline according to claim 2, characterized in that: The locking ring is mounted on the mounting end of the connecting belt, and the free end of the connecting belt bypasses one week of the flexible sleeve to be connected to the locking ring.

5. A heating sleeve for a heating pipeline according to any one of claims 2 to 4, characterized in that: The fastening portion is a magic tape; alternatively, the fastening portion is a snap button; alternatively, the fastening portion is a buckle.

6. The heating sleeve for a heating pipeline according to claim 2, characterized in that: The fastening portion includes a first connecting member and a second connecting member arranged at intervals on the surface of the connecting belt facing away from the pipeline. When the first connecting member passes through the locking ring and is detachably connected to the second connecting member, the locking ring is located between the first connecting member and the second connecting member.

7. A heating sleeve for a heating pipeline according to claim 1, characterized in that: The flexible sleeve includes a heating sheet with a heating element provided therein and a heat preservation sheet with a heat preservation element provided therein. The heating sheet and the heat preservation sheet are separately arranged. When the heating sheet wraps around the pipeline, the heat preservation sheet wraps around the outer peripheral side of the heating sheet, and the heating sheet and / or the heat preservation sheet are provided with the locking assembly.

8. The heating sleeve for a heating pipeline according to claim 7, characterized in that: A plurality of locking assemblies are provided, and the plurality of locking assemblies are arranged on the outer surface of the heating sheet, so that when the heating sheet wraps around the pipeline, the plurality of locking assemblies are distributed at intervals along the axial direction of the pipeline.

9. The heating sleeve for a heating pipeline according to claim 7, characterized in that: The heating element is one of a resistance heating wire and a heating film.

10. A heating sleeve for a heating pipeline according to claim 1, characterized in that: The flexible sleeve is of an integral structure. The flexible sleeve includes a heating element and a heat preservation element arranged from the inside to the outside, and the locking assembly is arranged on the outer surface of the flexible sleeve.

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