Pipeline heater convenient to assemble

Abstract

The utility model discloses a pipeline heater convenient to assemble, 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, at least two wire holders are arranged on the top face of the supporting plate, each wire holder is connected with two wiring terminals, and the two wiring terminals on each wire holder are used for being connected with a first power line connected with a power supply wiring end of a heating element and a second power line capable of extending out of the shell respectively. The top end of the upper shell is of an open structure, and a detachable top cover plate is connected to the open position of the top end of the upper shell in a sealed mode. The device is simple in structure, convenient to assemble and high in efficiency; and maintenance is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of heaters, in particular to a pipeline heater which is convenient for assembly. 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 the heat exchange flow path inside the electric heating container, following the path designed by 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 CN220206051U discloses a heating device, specifically discloses that the heating tube is located inside the cover body, and the cover body is located inside the outer shell, so that the outer shell can effectively protect both the cover body and the heating tube, and the protection effect is better; however, due to the relatively complex structure, the power connection line connected to the heating tube is relatively long, and the power connection line often needs to be straightened during the assembly process, resulting in problems such as low assembly efficiency and inconvenient maintenance. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the existing defects, provide a pipeline heater which is convenient for assembly, realize dividing the original long power connection line into two shorter power connection lines, avoid affecting the assembly efficiency of the pipeline heater components due to the too long power connection line, and improve the wiring strength between the power connection line and the heating element; the pipeline heater has a simple structure, convenient assembly and high efficiency; convenient for maintenance; it 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 which is convenient for assembly, including a heating tube and a housing arranged outside it, a heating element is arranged on the circumferential outer wall of the heating tube, the heating element is located inside the housing, and both ends of the heating tube 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 to the circumferential outer wall of the heating tube are arranged at both ends of the upper housing and the lower housing; a support plate is arranged inside the upper housing, and there are at least two wiring seats on the top surface of the support plate, and wiring terminal units are arranged on the wiring seats. The wiring terminal units on the wiring seats are used to connect a power line one connected to the power supply wiring end of the heating element and a power line two that can extend to the outside of the housing. The top end of the upper housing is an open structure, and a detachable top cover plate is hermetically connected to the open part at the top end of the upper housing.

[0005] Furthermore, a copper stud is injection-molded in the terminal block, and a threaded hole is provided on the copper stud. The terminal unit includes two terminal blocks stacked on the terminal block, and the connecting ends of the terminal blocks are provided with connecting holes, and the two stacked terminal blocks are fixedly connected to the corresponding copper studs by connecting screws passing through the connecting holes and the threaded holes; the two terminal blocks fixed on the terminal block are respectively connected to power line 1 connected to the power terminal of the heating element and power line 2 that can extend to the outside of the shell.

[0006] Furthermore, the outer circumferential wall of the copper stud is provided with spline teeth; the number of the wiring seats is three, and a partition is provided on the support plate between adjacent wiring seats.

[0007] Furthermore, a wire passing hole is provided on one side wall of the upper shell, and a wire sealing ring for sealing the wire is provided in the wire passing hole.

[0008] Furthermore, a clearance hole for wiring operation is reserved between one end of the support plate close to the wiring seat and the inner wall of the upper shell.

[0009] Furthermore, a thermostat installation hole is provided on the support plate, and a temperature control switch is installed in the thermostat installation hole.

[0010] Furthermore, both ends of the heating tube are provided with water inlet and outlet joints; positioning columns are provided on the outer wall of the heating tube along its radial direction, and positioning holes matching the positioning columns are opened on the support plate at positions corresponding to the positioning columns, and the positioning columns pass through the positioning holes.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the pipe heater which is easy to assemble can complete the transfer of two shorter power connection lines through the two wiring terminals provided on the wiring seat, so as to realize the division of the original longer power connection line into two shorter power connection lines, which can not only avoid the influence of the assembly efficiency of the pipe heater assembly due to the power connection line being too long, but also improve the connection strength and connection stability of the power connection line and the heating element; the wiring seat is arranged on the bottom surface of the support plate, and the support plate is provided with a thermostat mounting hole and a clearance hole, the top of the upper shell is an open structure and is connected with a detachable top cover plate, the heating tube, the upper shell and the lower shell can be fixedly assembled first, and then the wiring operation of the power connection line and the wiring terminal and the installation operation of the temperature control switch can be carried out, the pipe heater has a simple structure, and the assembly is convenient and efficient; when it is necessary to inspect the connection status of the temperature control switch, the power connection line and the wiring terminal, it is only necessary to remove the top cover plate, which is convenient for inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is an explosion diagram of the utility model;

[0013] Figure 2Isometric view of the upper shell of the present utility model;

[0014] Figure 3 Partial cross-sectional view of the upper shell of the present utility model;

[0015] Figure 4 Schematic diagram of the bottom structure of the support plate of the present utility model;

[0016] Figure 5 Schematic diagram of the copper stud and terminal structure of the present utility model.

[0017] In the figure: 1. Heating tube; 11. Heating element; 12. Water inlet and outlet joint; 13. Positioning post; 2. Upper shell; 21. Support plate; 22. Wiring seat; 23. Terminal; 231. Connection hole; 232. Wiring compression ring; 24. Copper stud; 241. Threaded hole; 242. Spline tooth; 25. Partition; 26. Thermostat mounting hole; 27. Positioning hole; 28. Relief hole; 3. Lower shell; 4. Top cover plate; 5. Thermostat switch; 6. Wire sealing ring; 7. Power cord one; 8. Power cord two. Specific embodiments

[0018] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model. Embodiment

[0019] Please refer to Figures 1-5 , the present utility model provides a technical solution: a pipeline heater that is easy to assemble, including a heating tube 1 and a housing provided outside it. A heating element 11 is provided on the circumferential outer wall of the heating tube 1. The heating element 11 in this embodiment is a thick film heating element, and the heating element 11 can also be a heating resistance wire; the heating element 11 is located inside the housing, and both ends of the heating tube 1 penetrate to the outside of the housing, and water inlet and outlet joints 12 are provided at both ends of the heating tube 1; the housing includes an upper shell 2 and a lower shell 3 whose edges are hermetically buckled, and the upper shell 2 and the lower shell 3 are fixedly connected by screws. 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 sealing gasket is provided on the buckling surface between the upper shell 2 and the lower shell 3, and on the fitting surface of the semi-circular groove surfaces of the upper shell 2 and the lower shell 3 with the heating tube 1, and a second sealing gasket is provided on the buckling surface between the upper shell 2 and the top cover plate 4;

[0020] A support plate 21 is provided in the upper shell 2, and at least two wiring seats 22 are provided on the top surface of the support plate 21. In this embodiment, the number of the wiring seats 22 is three, and two wiring terminals 23 are connected to each of the wiring seats 22. The two wiring terminals 23 on the wiring seats 22 are respectively used to connect the power line 1 7 connected to the power terminal of the heating element 11 and the power line 2 8 that can extend to the outside of the shell;

[0021] A copper stud 24 is injection molded in the terminal block 22, and spline teeth 242 are provided on the circumferential outer wall of the copper stud 24, and the spline teeth 242 increase the stability of the connection between the copper stud 24 and the terminal block 22; a threaded hole 241 is provided on the copper stud 24, and the two terminal blocks 23 on the terminal block 22 are superimposed and fitted with each other, and the connecting ends of the terminal blocks 23 are provided with connecting holes 231, and the two mutually fitted terminal blocks 23 are fixedly connected to the corresponding copper stud 24 by connecting screws penetrating the connecting holes 231 and the threaded holes 241; the terminal ends of the terminal blocks 23 are provided with two wiring pressure rings 232 for wiring, and the two wiring pressure rings 232 are coaxially arranged; a wire passing hole is provided on one side wall of the upper shell 2, and a wire sealing ring 6 for sealing the wire is provided in the wire passing hole;

[0022] The support plate 21 is provided with a thermostat mounting hole 26, in which a temperature control switch 5 is installed. When the temperature of the heating tube 1 is too high, the temperature control switch 5 can be used for control and protection; a clearance hole 28 for wiring operation is reserved between the end of the support plate 21 close to the wiring seat 22 and the inner wall of the upper shell 2; the top of the upper shell 2 is an open structure, and a detachable top cover plate 4 is sealed and connected to the open top of the upper shell 2, and the upper shell 2 and the top cover plate 4 are fixedly connected by screws;

[0023] When assembling the pipeline heater: Connect the power cord 7 to the power connection terminal of the heating element 11, fix and assemble the heating pipe 1, the upper shell 2 and the lower shell 3, then install the temperature control switch 5 into the thermostat installation hole 26 of the support plate 21, pull the power cord 7 to the position of the terminal block 22 through the relief hole 28, and connect the power cord 7 to a terminal 23 on its corresponding terminal block 22. Then connect the power cord 8 to a terminal 23 on its corresponding terminal block 22, and make the power cord 8 pass through the wire sealing ring 6; Finally, fixedly connect the top cover plate 4 to the upper shell 2; The specific wiring method of the power cord 7 and the power cord 8 with the terminal 23 is: Pass the power cord 7 and the power cord 8 through the wiring compression ring 232 on its corresponding terminal 23, and use a crimping tool to crimp the wiring compression ring 232 to make it deformed, so as to complete the connection of the power cord 7 and the power cord 8 with the terminal 23. And the terminal 23 is provided with two coaxially arranged wiring compression rings 232. When crimping the wiring compression ring 232, the power cord 7 and the power cord 8 are also deformed, so that part of the wire bodies of the power cord 7 and the power cord 8 protrude into the gap between the wiring compression rings 232, thus greatly increasing the wiring strength.

[0024] Further, a partition 25 is provided between adjacent terminal blocks 22 on the support plate 21 to prevent accidental contact between the terminals 23 on adjacent terminal blocks 22.

[0025] Further, positioning posts 13 are arranged on the outer wall of the heating pipe 1 along its radial direction. Positioning holes 27 adapted to the positioning posts 13 are provided on the support plate 21 at positions corresponding to the positioning posts 13, and the positioning posts 13 penetrate through the positioning holes 27. Through the cooperation of the positioning posts 13 provided on the heating pipe 1 and the positioning holes 27 provided on the support plate 21, axial and radial positioning of the heating pipe 1 is realized.

[0026] The pipeline heater disclosed in this embodiment that is convenient for assembly: The transfer of two shorter power connection lines can be completed through the two terminals 23 provided on the terminal block 22, realizing the division of the original longer power connection line into two shorter power connection lines. This can not only avoid affecting the assembly efficiency of the pipeline heater assembly due to the too long power connection line, but also improve the wiring strength and connection stability between the power connection line and the heating element 11; The terminal block 22 is arranged on the bottom surface of the support plate 21, and the support plate 21 is provided with a thermostat installation hole 26 and a relief hole 28. The top of the upper shell 2 is an open structure and is connected with a detachable top cover plate 4. The fixed assembly of the heating pipe 1, the upper shell 2 and the lower shell 3 can be carried out first, and then the wiring operation of the power connection line and the terminal 23 and the installation operation of the temperature control switch 5 can be carried out. The structure of the pipeline heater is simple, the assembly is convenient and the efficiency is high; When it is necessary to check the connection status of the temperature control switch 5, the power connection line and the terminal 23, only the top cover plate 4 needs to be removed, and the maintenance is convenient.

[0027] Although the embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill 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, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A pipe heater that is easy to assemble, 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, and no less than two wiring sockets are provided on the top surface of the support plate, and a wiring terminal unit is provided on the wiring socket, and the wiring terminal unit on the wiring socket is used to connect a power line 1 connected to the power terminal of the heating element and a power line 2 that can extend to the outside of the shell, and the top end of the upper shell is an open structure, and a detachable top cover is sealed and connected to the open top of the upper shell.

2. The easy-to-assemble pipeline heater according to claim 1, characterized in that: A copper stud is injection molded in the terminal block, and a threaded hole is provided on the copper stud; the terminal unit includes two terminal blocks stacked on the terminal block, and the connecting ends of the terminal blocks are provided with connecting holes, and the two stacked terminal blocks are fixedly connected to the corresponding copper studs through connecting screws passing through the connecting holes and the threaded holes; the two terminal blocks fixed on the terminal block are respectively connected to a power line 1 connected to the power terminal of the heating element and a power line 2 that can extend to the outside of the shell.

3. The easy-to-assemble pipeline heater according to claim 2, characterized in that: The outer circumferential wall of the copper stud is provided with spline teeth; the number of the wiring seats is three, and a partition is provided between adjacent wiring seats on the support plate.

4. The easy-to-assemble 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.

5. The easy-to-assemble pipeline heater according to claim 1, characterized in that: A clearance hole for wiring operation is reserved between one end of the support plate close to the wiring seat and the inner wall of the upper shell.

6. The easy-to-assemble pipeline heater according to claim 1, characterized in that: The support plate is provided with a thermostat installation hole, and a temperature control switch is installed in the thermostat installation hole.

7. The easy-to-assemble pipeline heater according to claim 1, characterized in that: Both ends of the heating tube are provided with water inlet and outlet joints; a positioning column is provided on the outer wall of the heating tube along its radial direction, and a positioning hole matching the positioning column is opened on the support plate at the corresponding position of the positioning column, and the positioning column passes through the positioning hole.

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