Pipeline heater with good sealing effect

Abstract

The utility model discloses a pipeline heater with a good sealing effect, which comprises a heating pipe and a shell arranged outside the heating pipe, a heating element is arranged on the circumferential outer wall of the heating pipe, the heating element is positioned in the shell, and two ends of the heating pipe penetrate to the outside of the shell; the shell comprises an upper shell and a lower shell of which the edges are mutually sealed and buckled; a supporting plate is arranged in the upper shell, a temperature control switch is installed on the supporting plate, and a wire pressing unit is arranged on one side of the supporting plate and used for arranging and fixing a power source connecting wire of the heating element and a power source connecting wire of the temperature control switch. A wire passing hole is formed in the side wall, corresponding to the wire pressing unit, of the upper shell. An electric wire sealing ring used for sealing a heating element power source connecting wire and a temperature control switch power source connecting wire is arranged in the wire passing hole. The pipeline heater has the advantages of being good in sealing protection performance, simple in structure, convenient to overhaul, regular in line arrangement of the pipeline heater and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline heaters, and particularly relates to a pipeline heater with good sealing effect. Background Technique

[0002] During operation, a low-temperature fluid medium enters the input port of a pipeline heater through a pipeline under pressure, and along the heat exchange flow path inside the electric heating container, following the 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; Patent Publication No. CN220871148U discloses a high-efficiency energy-saving energy storage chiller heater structure, including a housing assembly formed by buckling an upper housing and a lower housing; a thick film heater is arranged inside the housing assembly, and quick connectors are welded at both ends of the thick film heater, and the quick connectors and the housing assembly are sealed and fixed through heat shrinkable sleeves; however, since the temperature controller is located outside the housing, there are problems such as poor sealing protection and messy wiring arrangement of the pipeline heater. 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 good sealing effect, good sealing protection, simple structure, convenient maintenance, and regular wiring arrangement of the pipeline heater, which can effectively solve the problems in the background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A pipeline heater with good sealing effect, including a heating pipe and a housing arranged outside it, heating elements are arranged on the circumferential outer wall of the heating pipe, the heating elements are located inside the housing, and both ends of the heating pipe penetrate to the outside of the housing; the housing includes an upper housing and a lower housing whose edges are hermetically buckled, and semi-circular groove surfaces that are hermetically fitted with the circumferential outer wall of the heating pipe are arranged at both ends of the upper housing and the lower housing; a support plate is arranged inside the upper housing, a temperature control switch is installed on the support plate, and a wire pressing unit is arranged on one side of the support plate, and the wire pressing unit is used for arranging and fixing the power connection wires of the heating elements and the power connection wires of the temperature control switch; a wire passing hole is opened on one side wall of the upper housing corresponding to the wire pressing unit, and a wire sealing ring for sealing the power connection wires of the heating elements and the power connection wires of the temperature control switch is arranged in the wire passing hole.

[0005] Furthermore, the wire pressing unit includes a wire arrangement plate 1 transversely arranged on one side of the support plate, the wire arrangement plate 1 is provided with a plurality of wire arrangement grooves along its width direction, and a connecting hole 1 is provided at both ends of the width direction of the wire arrangement plate; a wire pressing plate is provided on the wire arrangement plate 1 and is interlocked with it, and a wire pressing protrusion is provided on the bottom surface of the wire pressing plate at the position corresponding to the wire arrangement groove, and a connecting hole 2 is provided at both ends of the wire pressing plate, and the wire pressing plate is fixedly connected to the wire arrangement plate 1 by self-tapping screws penetrating the connecting hole 2 and the connecting hole 1; the wire pressing unit also includes a wire arrangement plate 2 vertically arranged on one side of the support plate, and a wire arrangement gap is left between the wire arrangement plate 2 and a side wall in the width direction of the upper shell.

[0006] Furthermore, the wiring board 1 and the wiring board 2 are both arranged on the upper surface of the support plate, and a temperature control switch mounting hole is opened on the upper surface of the support plate, and the temperature control switch is installed on the support plate through the temperature control switch mounting hole; the top of the upper shell is an open structure, and a removable top end cover is sealed and connected to the open top of the upper shell.

[0007] Furthermore, a clearance hole is provided on the support plate, and the clearance hole is used for the power connection line of the heating element to pass through the support plate.

[0008] Furthermore, the wire sealing ring is provided with a high-voltage wire passing hole and a low-voltage wire passing hole along its axial direction, and an annular protrusion 2 is provided along the inner wall contour of the high-voltage wire passing hole and the low-voltage wire passing hole; an annular groove is provided on the circumferential outer wall of the wire sealing ring along its outer edge contour, the wire sealing ring is clamped in the wire passing hole through the annular groove, and an annular protrusion 1 is provided along the outer edge contour of the annular groove of the wire sealing ring.

[0009] Furthermore, both ends of the heating pipe are provided with water inlet and outlet joints.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: the pipeline heater with good sealing effect seals and protects the heating element and the temperature control switch through the upper shell, the lower shell and the top end cover, and seals the power connection line of the heating element and the power connection line of the temperature control switch through the wire sealing ring. The pipeline heater has good sealing protection, simple structure and convenient maintenance; the power connection line of the heating element and the power connection line of the temperature control switch are compressed and arranged by the wire pressing unit, and the line arrangement of the pipeline heater is regular. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 This is an explosion diagram of the utility model;

[0013] Figure 3 This is a schematic diagram of the internal structure of the upper shell of the utility model;

[0014] Figure 4Is a three-dimensional view of the upper shell of the present utility model;

[0015] Figure 5 Is Figure 4 Partial enlarged view;

[0016] Figure 6 Is a schematic structural view of the wire pressing plate of the present utility model;

[0017] Figure 7 Is a schematic structural view of the wire sealing ring of the present utility model;

[0018] Figure 8 Is a three-dimensional view of the wire sealing ring of the present utility model.

[0019] In the figure: 1. Heating tube; 11. Heating element; 12. Water inlet and outlet joint; 2. Upper shell; 21. Support plate; 22. Relief hole; 23. Thermostat switch mounting hole; 24. First wire arranging board; 241. Wire arranging groove; 242. First connection hole; 25. Wire passing hole; 26. Second wire arranging board; 3. Lower shell; 4. Top end cover; 5. Thermostat switch; 6. Wire pressing plate; 61. Wire pressing protrusion; 62. Second connection hole; 7. Wire sealing ring; 71. High-voltage wire passing hole; 72. Low-voltage wire passing hole; 73. Ring groove; 74. First annular protrusion; 75. Second annular protrusion; 8. First seal; 9. Second seal. Specific embodiments

[0020] 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

[0021] Please refer to Figure 1-8 , the present utility model provides a technical solution: A pipeline heater with good sealing effect, including a heating tube 1 and a shell provided outside it. A heating element 11 is provided on the circumferential outer wall of the heating tube 1. The heating element 11 is located inside the shell, and both ends of the heating tube 1 penetrate to the outside of the shell; the shell includes an upper shell 2 and a lower shell 3 whose edges are hermetically buckled together, and semi-circular groove surfaces that are hermetically attached to the circumferential outer wall of the heating tube 1 are provided at both ends of the upper shell 2 and the lower shell 3; a first seal 8 is provided on the buckling surface between the upper shell 2 and the lower shell 3 and on the fitting surfaces of the semi-circular groove surfaces of the upper shell 2 and the lower shell 3 with the heating tube 1, and a second seal 9 is provided on the buckling surface between the upper shell 2 and the top end cover 4;

[0022] A support plate 21 is provided inside the upper housing 2. A temperature control switch mounting hole 23 is formed on the upper surface of the support plate 21, and a temperature control switch 5 is installed in the temperature control switch mounting hole 23. A wire pressing unit is provided on one side of the upper surface of the support plate 21, and this wire pressing unit is used for arranging and fixing the power connection wires of the heating element 11 and the power connection wires of the temperature control switch 5; on one side wall of the upper housing 2 corresponding to the wire pressing unit, a wire passing hole 25 is formed, and a wire seal ring 7 for sealing the power connection wires of the heating element 11 and the power connection wires of the temperature control switch 5 is provided in the wire passing hole 25; the top end of the upper housing 2 is of an open structure, and a detachable top end cover 4 is hermetically connected to the open end at the top of the upper housing 2; the heating element 11 and the temperature control switch 5 are hermetically protected by the upper housing 2, the lower housing 3 and the top end cover 4, and the power connection wires of the heating element 11 and the power connection wires of the temperature control switch 5 are sealed by the wire seal ring 7. The pipeline heater has good sealing protection, a simple structure, and the top end cover 4 is detachably and fixedly connected to the upper housing 2, which is convenient for overhauling the electrical components inside the pipeline heater;

[0023] The wire pressing unit includes a wire arranging plate one 24 horizontally provided on one side of the support plate 21. A plurality of wire arranging grooves 241 are formed in the wire arranging plate one 24 along its width direction, and connection holes one 242 are formed at both ends in the width direction of the wire arranging plate one 24; a wire pressing plate 6 that is buckled with it is provided on the wire arranging plate one 24. Wire pressing protrusions 61 are provided at positions corresponding to the wire arranging grooves 241 on the bottom surface of the wire pressing plate 6. Connection holes two 62 are formed at both ends of the wire pressing plate 6. The wire pressing plate 6 is fixedly connected to the wire arranging plate one 24 through self-tapping screws passing through the connection holes two 62 and the connection holes one 242; the wire pressing unit further includes a wire arranging plate two 26 vertically provided on one side of the support plate 21, and a wire arranging gap is left between the wire arranging plate two 26 and one side wall of the upper housing 2 in the width direction; the power connection wires of the heating element 11 are arranged in the wire arranging grooves 241 of the wire arranging plate one 24, and the power connection wires of the heating element 11 are pressed by the wire pressing plate 6; the power connection wires of the temperature control switch 5 are arranged in the wire arranging gap between the wire arranging plate two 26 and the side wall of the upper housing 2, so that the power connection wires of the temperature control switch 5 are attached to one side inside the upper housing 2, and the circuit arrangement of the pipeline heater is regular;

[0024] The wire sealing ring 7 is provided with a high-voltage wire through hole 71 and a low-voltage wire through hole 72 along its axial direction, and annular protrusions II 75 are provided along the inner wall contours of the high-voltage wire through hole 71 and the low-voltage wire through hole 72; a ring groove 73 is provided along the outer edge contour on the circumferential outer wall of the wire sealing ring 7, and the wire sealing ring 7 is clamped in the wire through hole 25 through the ring groove 73, and an annular protrusion I 74 is provided along the outer edge contour at the ring groove 73 part of the wire sealing ring 7; through the interference fit between the annular protrusion I 74 and the inner wall of the wire through hole 25, the sealing performance between the wire sealing ring 7 and the wire through hole 25 is improved. The power connection wire of the heating element 11 is arranged in the high-voltage wire through hole 71, and the power connection wire of the temperature control switch 5 is arranged in the low-voltage wire through hole 72. The high-voltage wire through hole 71 and the low-voltage wire through hole 72 are separately arranged, which is convenient for the sealing of the power connection wire, and the sealing performance of the wire sealing ring 7 for the power connection wire is further improved through the annular protrusion II 75.

[0025] The pipeline heater with good sealing effect disclosed in this embodiment seals and protects the heating element 11 and the temperature control switch 5 through the upper shell 2, the lower shell 3 and the top end cover 4, and seals the power connection wires of the heating element 11 and the temperature control switch 5 through the wire sealing ring 7. The pipeline heater has good sealing and protection performance, simple structure and convenient maintenance; through the wire pressing unit, the power connection wires of the heating element 11 and the temperature control switch 5 are tightly arranged, and the circuit arrangement of the pipeline heater is regular.

[0026] Further, a relief hole 22 is provided on the support plate 21, and the relief hole 22 is used for the power connection wire of the heating element 11 to pass through the support plate 21.

[0027] Further, water inlet and outlet connectors 12 are provided at both ends of the heating pipe 1.

[0028] 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 with good sealing effect, comprising a heating pipe and a shell provided outside the heating pipe, characterized in that: A heating element is provided on the circumferential outer wall of the heating tube, the heating element is located in the shell, and both ends of the heating tube extend to the outside of the shell; the shell includes an upper shell and a lower shell whose edges are sealed and buckled with each other, and both ends of the upper shell and the lower shell are provided with semicircular groove surfaces that are sealed and fitted with the circumferential outer wall of the heating tube; a support plate is provided in the upper shell, a temperature control switch is installed on the support plate, and a wire pressing unit is provided on one side of the support plate, and the wire pressing unit is used to arrange and fix the power connection line of the heating element and the power connection line of the temperature control switch; a wire passing hole is provided on a side wall of the upper shell corresponding to the wire pressing unit, and a wire sealing ring is provided in the wire passing hole for sealing the power connection line of the heating element and the power connection line of the temperature control switch.

2. A pipeline heater with good sealing effect according to claim 1, characterized in that: The wire pressing unit includes a wire arrangement plate 1 which is horizontally arranged on one side of the support plate, and a plurality of wire arrangement grooves are provided on the wire arrangement plate 1 along its width direction, and a connecting hole 1 is provided at both ends of the width direction of the wire arrangement plate 1; a wire pressing plate which is interlocked with the wire arrangement plate 1 is provided on the wire arrangement plate 1, and wire pressing protrusions are provided on the bottom surface of the wire pressing plate at positions corresponding to the wire arrangement grooves, and a connecting hole 2 is provided at both ends of the wire pressing plate, and the wire pressing plate is fixedly connected to the wire arrangement plate 1 by self-tapping screws penetrating the connecting hole 2 and the connecting hole 1; the wire pressing unit also includes a wire arrangement plate 2 which is vertically arranged on one side of the support plate, and a wire arrangement gap is left between the wire arrangement plate 2 and a side wall in the width direction of the upper shell.

3. A pipeline heater with good sealing effect according to claim 2, characterized in that: The first and second wiring boards are both arranged on the upper surface of the support plate. A temperature control switch mounting hole is opened on the upper surface of the support plate, and the temperature control switch is installed on the support plate through the temperature control switch mounting hole; the top of the upper shell is an open structure, and a detachable top end cover is sealed and connected to the open top of the upper shell.

4. A pipeline heater with good sealing effect according to claim 3, characterized in that: The support plate is provided with a clearance hole, and the clearance hole is used for the power connection line of the heating element to pass through the support plate.

5. The pipeline heater with good sealing effect according to claim 1, characterized in that: The wire sealing ring is provided with a high-voltage wire passing hole and a low-voltage wire passing hole along its axial direction, and an annular protrusion 2 is provided along the inner wall contour of the high-voltage wire passing hole and the low-voltage wire passing hole; an annular groove is provided on the circumferential outer wall of the wire sealing ring along its outer edge contour, the wire sealing ring is clamped in the wire passing hole through the annular groove, and an annular protrusion 1 is provided on the annular groove portion of the wire sealing ring along its outer edge contour.

6. The pipeline heater with good sealing effect according to claim 1, characterized in that: Both ends of the heating pipe are provided with water inlet and outlet joints.

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