Pipeline heater

Abstract

The utility model discloses a pipeline heater. The pipeline heater comprises a shell which is arranged on the outer side of a heating pipe fitting and is used for sealing and protecting a heating element of the heating pipe fitting; the shell comprises an upper shell body and a lower shell body which are buckled with each other. The two ends of the buckling face of the upper shell body and the two ends of the buckling face of the lower shell body are each provided with a semicircular groove face attached to the circumferential outer wall of the heating pipe fitting. A first sealing groove is formed in the buckling face of the upper shell along the edge contour of the upper shell, a first sealing piece is arranged in the first sealing groove, a second sealing groove is formed in the buckling face of the lower shell along the edge contour of the lower shell, and a second sealing piece is arranged in the second sealing groove. A supporting plate used for installing a temperature control switch is arranged in the upper shell, the temperature control switch is installed on the top face of the supporting plate, and the temperature sensing end of the temperature control switch penetrates through the supporting plate to abut against the heating pipe fitting. The top end of the upper shell is of an open structure, and a detachable top end cover plate is connected to the open position of the top end of the upper shell in a sealed mode. The utility model has the advantages of simple structure, high assembly efficiency, convenience in maintenance, disassembly and assembly, good sealing performance and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of heaters, in particular to a pipeline heater. Background Technique

[0002] In the operation of a pipeline heater, a low-temperature fluid medium enters its input port through a pipeline under pressure, and along a specific heat exchange flow path inside an electric heating container, following a path designed based on the principle of fluid thermodynamics, it takes away the high-temperature heat energy generated during the operation of the heating element, so that the temperature of the medium to be heated rises; the patent publication number CN222263049U discloses a heater for a new energy energy storage power station, specifically discloses that a protective shell for sealing and protecting the heating circuit is provided on the outer side of the heating pipe body, the protective shell includes a front shell and a rear shell, and a sealant groove is provided on one side where the front shell and the rear shell are connected. By filling sealant in the sealant groove, the front shell and the rear shell can be hermetically connected. Semi-circular clamping plates for clamping the heating pipe body are provided at both ends of the front shell and the rear shell, and sealing rings for sealing the semi-circular clamping plates are provided on the outer sides of both ends of the heating pipe body; however, there are problems such as a relatively complex sealing structure, low assembly efficiency, inconvenient maintenance, disassembly and assembly, and poor sealing performance. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the existing defects, and provide a pipeline heater with a simple structure, high assembly efficiency, convenient maintenance, disassembly and assembly, and good sealing performance, which can effectively solve the problems in the background technique.

[0004] To achieve the above object, the utility model provides the following technical solution: A pipeline heater, including a housing for sealing and protecting its heating element on the outer side of the heating pipe fitting, and both ends of the heating pipe penetrate to the outside of the housing; the housing includes an upper housing and a lower housing that are buckled with each other, and semi-circular groove surfaces that fit with the circumferential outer wall of the heating pipe fitting are provided at both ends of the buckling surface of the upper housing and the lower housing; a first sealing groove is provided along the edge contour of the buckling surface of the upper housing, and a first sealing member is provided in the first sealing groove. A second sealing groove is provided along the edge contour of the buckling surface of the lower housing, and a second sealing member is provided in the second sealing groove; a support plate for installing a temperature control switch is provided inside the upper housing, the temperature control switch is installed on the top surface of the support plate, and the temperature sensing end of the temperature control switch penetrates through the support plate and abuts against the heating pipe fitting; the top end of the upper housing is an open structure, and a detachable top cover plate is hermetically connected to the open end at the top of the upper housing.

[0005] Further, the heating pipe fitting includes a heating pipe body, heating elements are provided on the outer wall of the heating pipe body, water inlet and outlet joints are provided at both ends of the heating pipe body, and the water inlet and outlet joints at both ends penetrate to the outside of the housing.

[0006] Further, the sealing and fitting surfaces at the bottom end of the first seal and the top end of the second seal are each provided with no less than two sealing ribs along their contours, and the sealing ribs of the first seal and the second seal are staggered and engaged with each other.

[0007] Further, a third sealing groove is formed along the edge contour of the top surface of the upper housing, and a third seal is provided in the third sealing groove.

[0008] Further, a wire passing hole is formed in one side wall of the upper housing, and a wire sealing ring for sealing the wire is provided in the wire passing hole.

[0009] Further, a grounding stud is provided on the outer wall of the heating tube body along its radial direction, a limiting hole adapted to the grounding stud is formed in the support plate at the corresponding position of the grounding stud, and the grounding stud passes through the limiting hole.

[0010] Further, a heat insulation layer is also filled between the upper housing, the lower housing and the heating pipe fitting.

[0011] Further, a plurality of first connecting ear plates are provided at the circular peripheral edge of the lower end of the upper housing, a plurality of second connecting ear plates corresponding to the first connecting ear plates are provided at the circular peripheral edge of the top end of the lower housing, and the first connecting ear plates and the second connecting ear plates are fixedly connected by screws; a plurality of third connecting ear plates are provided at the circular peripheral edge of the top end of the upper housing, a plurality of fourth connecting ear plates corresponding to the third connecting ear plates are provided at the circular peripheral edge of the top cover plate, and the third connecting ear plates and the fourth connecting ear plates are fixedly connected by screws; a connecting protrusion is further provided at the bottom end of the lower housing, and a mounting hole is formed in the connecting protrusion.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: for this pipeline heater, the heating element, temperature control switch and internal connecting wires of the heating pipe fitting are hermetically wrapped by the upper housing and the lower housing, and the sealing ribs provided on the first seal, the second seal and the third seal further improve the sealing performance; the top cover plate is detachably connected to the upper housing, which is convenient for overhauling the internal components of the pipeline heater; this pipeline heater has a simple structure, high assembly efficiency, convenient overhaul, disassembly and assembly, and good sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is an exploded schematic diagram of the present utility model;

[0015] Figure 3 is a bottom view perspective view of the lower housing of the present utility model;

[0016] Figure 4 is a top view of the lower housing of the present utility model;

[0017] Figure 5 Isometric view of the upper shell of the present utility model;

[0018] Figure 6 Isometric view of the heating pipe fitting of the present utility model;

[0019] Figure 7 Partial enlarged view of the second seal of the present utility model;

[0020] Figure 8 Cross-sectional view of the present utility model.

[0021] In the figure: 1. Heating pipe fitting; 11. Heating pipe body; 12. Water inlet and outlet joint; 13. Earthing stud; 14. Heating element; 2. Upper shell; 21. First connecting ear plate; 22. First sealing groove; 23. Support plate; 231. Limiting hole; 24. Third connecting ear plate; 25. Third sealing groove; 26. Wire sealing ring; 3. Lower shell; 31. Second connecting ear plate; 32. Second sealing groove; 33. Connecting projection; 4. Top cover plate; 41. Fourth connecting ear plate; 5. First seal; 6. Second seal; 7. Third seal; 8. Temperature control switch; 9. Sealing rib; 10. Heat insulation layer. Specific implementation mode

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. Embodiment

[0023] Please refer to Figure 1-8 , the present utility model provides a technical solution: a pipeline heater, including a shell that seals and protects the heating element 14 on the outer side of the heating pipe fitting 1. The heating pipe fitting 1 includes a heating pipe body 11, a heating element 14 is provided on the outer wall of the heating pipe body 11, water inlet and outlet joints 12 are provided at both ends of the heating pipe body 11, and the water inlet and outlet joints 12 at both ends penetrate to the outside of the shell; the shell includes an upper shell 2 and a lower shell 3 that are buckled with each other, and semi-circular groove surfaces that fit with the circumferential outer wall of the heating pipe fitting 1 are provided at both ends of the buckling surface of the upper shell 2 and the lower shell 3;

[0024] A first sealing groove 22 is formed along the edge contour of the fastening surface of the upper housing 2, and a first sealing member 5 is arranged in the first sealing groove 22. A second sealing groove 32 is formed along the edge contour of the fastening surface of the lower housing 3, and a second sealing member 6 is arranged in the second sealing groove 32. The semi-circular groove surfaces at both ends of the upper housing 2 are hermetically attached to the circumferential outer wall of the heating pipe fitting 1 through the first sealing member 5, and the semi-circular groove surfaces at both ends of the lower housing 3 are hermetically attached to the circumferential outer wall of the heating pipe fitting 1 through the second sealing member 6. The sealing joint surfaces at the bottom ends of the first sealing member 5 and the top ends of the second sealing member 6 are each provided with at least two sealing ribs 9 along their contours, and the sealing ribs 9 of the first sealing member 5 and the second sealing member 6 are staggered from each other and engaged together. The first sealing member 5 and the second sealing member 6 are used to seal between the upper housing 2 and the lower housing 3 and between the upper housing 2, the lower housing 3 and the circumferential outer wall of the heating pipe fitting 1, with good sealing performance and high assembly efficiency.

[0025] A support plate 23 for installing a temperature control switch 8 is arranged in the upper housing 2. The temperature control switch 8 is installed on the top surface of the support plate 23, and the temperature sensing end of the temperature control switch 8 penetrates through the support plate 23 and abuts against the heating pipe fitting 1. When the temperature of the heating element 14 of the heating pipe fitting 1 is too high, it can be controlled and protected through the temperature control switch 8. A wire passing hole is formed in one side wall of the upper housing 2, and a wire sealing ring 26 for sealing the wire is arranged in the wire passing hole. The top end of the upper housing 2 is of an open structure, and a detachable top cover plate 4 is hermetically connected to the open end at the top of the upper housing 2. A third sealing groove 25 is formed along the edge contour of the top surface of the upper housing 2, and a third sealing member 7 is arranged in the third sealing groove 25, and the bottom surface of the third sealing member 7 is also provided with a sealing rib 9. The top cover plate 4 and the upper housing 2 are detachably connected, which is convenient for overhauling and disassembling the internal components of the pipeline heater, and the sealing performance between the top cover plate 4 and the upper housing 2 is increased through the third sealing member 7.

[0026] The heating element 14 in this embodiment is preferably a thick film heating element, and the heating element 14 can also be a resistance heating wire.

[0027] Furthermore, a grounding stud 13 is arranged on the outer wall of the heating pipe body 11 along the radial direction thereof. A limiting hole 231 adapted to the grounding stud 13 is formed in the support plate 23 at the corresponding position of the grounding stud 13, and the grounding stud 13 penetrates through the limiting hole 231. The axial and radial positioning of the heating pipe fitting 1 is realized through the cooperation of the grounding stud 13 arranged on the heating pipe body 11 and the limiting hole 231 arranged on the support plate 23.

[0028] Furthermore, a heat insulation layer 10 is also filled between the upper housing 2, the lower housing 3 and the heating pipe fitting 1 to prevent the external temperature of the housing from being overheated.

[0029] Further, a plurality of first connecting lugs 21 are provided at the circumferential edge of the lower end of the upper housing 2, and a plurality of second connecting lugs 31 corresponding to the first connecting lugs 21 are provided at the circumferential edge of the top end of the lower housing 3. The first connecting lugs 21 and the second connecting lugs 31 are fixedly connected by screws; a plurality of third connecting lugs 24 are provided at the circumferential edge of the top end of the upper housing 2, and a plurality of fourth connecting lugs 41 corresponding to the third connecting lugs 24 are provided at the circumferential edge of the top cover 4. The third connecting lugs 24 and the fourth connecting lugs 41 are fixedly connected by screws; a connecting protrusion 33 is further provided at the bottom end of the lower housing 3, and an installation hole is provided in the connecting protrusion 33.

[0030] The pipe heater disclosed in this embodiment: The heating element 14, the temperature control switch 8 and the connecting wires inside the housing of the heating pipe fitting 1 are hermetically wrapped by the upper housing 2 and the lower housing 3, and the sealing ribs 9 provided on the first seal 5, the second seal 6 and the third seal 7 further improve the sealing performance; The top cover 4 is detachably connected to the upper housing 2, and the top cover 4 can be removed to repair the components inside the pipe heater; The pipe heater has a simple structure, high assembly efficiency, convenient maintenance, disassembly and assembly, and good sealing performance.

[0031] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipe heater, comprising a shell provided on the outside of a heating pipe for sealing and protecting its heating element, characterized in that: Both ends of the heating tube extend to the outside of the shell; the shell includes an upper shell and a lower shell that are buckled together, and both ends of the buckling surfaces of the upper shell and the lower shell are provided with semicircular groove surfaces that fit with the circumferential outer wall of the heating tube; the buckling surface of the upper shell is provided with a sealing groove 1 along its edge contour, and a sealing member 1 is provided in the sealing groove 1, and the buckling surface of the lower shell is provided with a sealing groove 2 along its edge contour, and a sealing member 2 is provided in the sealing groove 2; a support plate for installing a temperature control switch is provided in the upper shell, the temperature control switch is installed on the top surface of the support plate, and the temperature sensing end of the temperature control switch passes through the support plate and abuts against the heating tube; the top of the upper shell is an open structure, and a detachable top cover plate is sealed and connected to the open top of the upper shell.

2. A pipeline heater according to claim 1, characterized in that: The heating pipe comprises a heating pipe body, a heating element is arranged on the outer wall of the heating pipe body, both ends of the heating pipe body are provided with water inlet and outlet joints, and the water inlet and outlet joints at both ends are penetrated to the outside of the shell.

3. A pipeline heater according to claim 1, characterized in that: The sealing fitting surface at the bottom end of the first seal and the sealing fitting surface at the top end of the second seal are both provided with at least two sealing convex ribs along their contours, and the sealing convex ribs of the first seal and the second seal are staggered and meshed together.

4. A pipeline heater according to claim 1, characterized in that: The top surface of the upper shell is provided with a sealing groove three along its edge contour, and a sealing member three is provided in the sealing groove three.

5. The pipeline heater according to claim 1, characterized in that: A wire passing hole is provided on one side wall of the upper shell, and a wire sealing ring for sealing the wire is arranged in the wire passing hole.

6. A pipeline heater according to claim 2, characterized in that: The outer wall of the heating tube body is provided with a grounding stud along its radial direction, and a limiting hole matching the grounding stud is opened on the support plate at a position corresponding to the grounding stud, and the grounding stud passes through the limiting hole.

7. The pipeline heater according to claim 1, characterized in that: A heat-insulating layer is also filled between the upper shell, the lower shell and the heating pipe.

8. The pipeline heater according to claim 1, characterized in that: The circumferential edge of the lower end of the upper shell is provided with a plurality of connecting ear plates 1, the circumferential edge of the top end of the lower shell is provided with a plurality of connecting ear plates 2 corresponding to the connecting ear plates 1, and the connecting ear plates 1 and 2 are fixedly connected by screws; the circumferential edge of the top end of the upper shell is provided with a plurality of connecting ear plates 3, the circumferential edge of the top cover plate is provided with a plurality of connecting ear plates 4 corresponding to the connecting ear plates 3, and the connecting ear plates 3 and 4 are fixedly connected by screws; the bottom end of the lower shell is also provided with a connecting protrusion, and a mounting hole is opened on the connecting protrusion.

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