Electric heating belt explosion-proof single-dual power supply junction box for electric tracing band system

Abstract

The utility model belongs to the technical field of electric heating tape fitting junction box application, and particularly discloses an electric heating tape explosion-proof single-dual power supply junction box for an electric tracing band system. Comprising a junction box body, a group of ribbon heaters, a first wiring terminal, a second wiring terminal, a sealing ring pad, an upper sealing end cover with a screw hole, a lower sealing end cover with a screw hole, an upper box cover with a screw hole, a lower box cover with a screw hole and the like. The explosion-proof two-way junction box has the beneficial effects that 1, the explosion-proof two-way junction box is used for connecting electric heating belts in an explosion-proof area or a wet area, increasing the length of the electric heating belts or being used for occasions such as electric heating belts with different powers and the like matched on the same pipeline, can be conveniently connected with two electric heating belts, and is excellent in sealing and explosion-proof performance; and 2, the electric heating belt can be output in a one-way manner or in a two-way manner, meanwhile, a first wiring terminal, a second wiring terminal and a third wiring terminal are arranged in the junction box and can be used for connecting a three-phase electric heating belt, and when a single-phase electric heating belt is used, the middle wiring terminal is not used.

Description

Technical Field

[0001] The utility model belongs to the technical field of application of electric heating belt accessory junction boxes, in particular to an electric heating belt explosion-proof single- and double-power supply junction box for an electric heating belt system. Background Art

[0002] Electric heating belt is a product that converts electrical energy into thermal energy, and has the characteristics of uniform heating and rapid temperature rise.

[0003] It has a wide range of uses in petroleum, chemical, electric power, metallurgy, light industry, food, refrigeration, construction, gas, agricultural and sideline products production, processing and other departments. It is suitable for temperature control, heating, insulation and heating of pipelines, equipment and containers, especially when the materials therein are easy to decompose, deteriorate, crystallize, condense and freeze.

[0004] The junction box is the main component for connecting the electric heating tapes. It is used to increase the length of the electric heating tapes or for more complex occasions such as electric heating tapes of different powers and three-way pipelines on the same pipeline, such as a junction box that can output electric heating tapes in one direction or in two directions.

[0005] How to design an explosion-proof single- and double-power junction box for electric heating belts is currently in urgent need of research and solution.

[0006] Therefore, based on the above problems, the utility model provides an explosion-proof single- and double-power junction box for an electric heating tape system. Utility Model Content

[0007] Purpose of the utility model: The purpose of the utility model is to address the deficiencies in the prior art and provide an explosion-proof single- and double-power junction box for electric heating tape systems, which is mainly suitable for connecting power lines and electric heating tapes in explosion-proof areas or humid areas.

[0008] Technical solution: The utility model provides an explosion-proof single- and double-power junction box for electric heating tape systems, comprising a junction box body and a group of electric heating tapes, wherein the inner wall of the cavity of the junction box body is symmetrically provided with a first terminal and a second terminal, and the outer walls at both ends of the junction box body are provided with a first electric heating tape sealing plug-in block with holes and a second electric heating tape sealing plug-in block with holes, and the inner walls of the cavity of both sides of the junction box body are respectively provided with sealing ring gaskets, and the two sides of the junction box body are respectively provided with an upper sealing end cover with screw holes and a lower sealing end cover with screw holes used in conjunction with the sealing ring gasket, and the upper sealing end cover with screw holes and the lower sealing end cover with screw holes are respectively provided with an upper box cover with screw holes and a lower box cover with screw holes used in conjunction with the junction box body; wherein, when the junction box body, the upper sealing end cover with screw holes, the lower sealing end cover with screw holes, the upper box cover with screw holes and the lower box cover with screw holes are assembled, the four corners are fastened and assembled by bolts.

[0009] In the technical solution, the junction box body, the upper sealed end cover with screw holes, the upper box cover with screw holes, the lower sealed end cover with screw holes, and the lower box cover with screw holes are respectively arranged as rectangular structures or circular structures with the same size.

[0010] In the technical solution, the lower box cover with screw holes is configured as a rectangular frame structure, a plurality of supporting ribs are provided on the inner wall of the lower box cover with screw holes, and a plurality of heat dissipation grooves are formed between the plurality of supporting ribs and the lower box cover with screw holes.

[0011] In the technical solution of the present invention, the first electric belt sealing plug-in block with holes and the second electric belt sealing plug-in block with holes are respectively configured as waist-shaped structures or circular structures.

[0012] In the technical solution, a third terminal is provided in the symmetrical center line cavity of the junction box body and between the first terminal and the second terminal; wherein the first terminal, the second terminal and the third terminal used in combination can be used for connecting a three-phase electric heating belt; when a single-phase electric heating belt is used, the third terminal is not used.

[0013] Compared with the prior art, the utility model has the following beneficial effects: 1. The explosion-proof two-way junction box is used for connecting electric heating tapes with electric heating tapes in explosion-proof areas or humid areas, increasing the length of the electric heating tapes or being used for electric heating tapes of different powers on the same pipeline, etc. It can conveniently connect two electric heating tapes and has excellent sealing and explosion-proof performance; 2. The explosion-proof two-way junction box is a single- and double-way universal type, which can output electric heating tapes in one direction or in two directions. At the same time, there are three first wiring terminals, second wiring terminals, and third wiring terminals in the junction box, which can be used to connect three-phase electric heating tapes. When single-phase electric heating tapes are used, the middle wiring terminal is not used; 3. The structural design of the lower box cover with screw holes, a plurality of supporting ribs and a plurality of heat dissipation grooves can not only quickly dissipate heat, but also reduce the overall weight; 4. The first electric heating tape with hole sealing plug block and the second electric heating tape with hole sealing plug block of the waist-shaped structure can not only reduce the overall weight, but also reduce the manufacturing raw materials and have a beautiful appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the explosion structure of the electric heating tape explosion-proof single- and double-power supply junction box for the electric heating tape system of the utility model;

[0016] Figure 2 It is a schematic diagram of the top view of the structure of the junction box body, the first connection terminal, the second connection terminal, the third connection terminal, the sealing ring gasket, etc. of the electric heating cable explosion-proof single and double power supply junction box for the electric heating cable system of the utility model;

[0017] Among them, the serial numbers in the figure are as follows: 10-junction box body, 11-electric belt, 12-first electric belt sealing plug with holes, 13-second electric belt sealing plug with holes, 14-upper sealing end cover with screw holes, 15-upper box cover with screw holes, 16-lower sealing end cover with screw holes, 17-lower box cover with screw holes, 18-support rib plate, 19-heat dissipation groove, 20-first terminal, 21-second terminal, 22-third terminal, 23-sealing ring gasket. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0019] In the description of the present invention, it should be noted that the terms "top", "bottom", "side"

[0020] The directions or positional relationships indicated by “the other side”, “the front”, “the back”, “the middle part”, “the inside”, “the top”, “the bottom”, etc. are based on the directions or positional relationships shown in the 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention; the terms “first”, “second”, and “third” are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms “installed”, “connected”, and “connected” should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] Embodiment 1

[0022] like Figure 1 and Figure 2The electric heating tape system shown in the figure has an explosion-proof single- and double-power junction box for electric heating tapes, comprising a junction box body 10 and a set of electric heating tapes 11.

[0023] The inner wall of the cavity of the junction box body 10 is symmetrically provided with a first connection terminal 20 and a second connection terminal 21.

[0024] The outer walls of both ends of the junction box body 10 are provided with a first electric belt sealing plug-in block with holes 12 and a second electric belt sealing plug-in block with holes 13.

[0025] The inner walls of the two sides of the junction box body 10 are respectively provided with sealing rings 23.

[0026] The two sides of the junction box body 10 are respectively provided with an upper sealing end cover 14 with screw holes and a lower sealing end cover 16 with screw holes for use with the sealing ring gasket 23.

[0027] The upper sealing end cover 14 with screw holes and the lower sealing end cover 16 with screw holes are respectively provided with an upper box cover 15 with screw holes and a lower box cover 17 with screw holes used in conjunction with the junction box body 10;

[0028] Among them, the junction box body 10, the upper sealed end cover with screw holes 14, the lower sealed end cover with screw holes 16, the upper box cover with screw holes 15, and the lower box cover with screw holes 17 are fastened and assembled at the four corners by bolts (not marked in the figure, which does not affect the disclosure of the technical solution of this application).

[0029] In addition, the preferred junction box body 10, upper sealed end cover with screw holes 14, upper box cover with screw holes 15, lower sealed end cover with screw holes 16, and lower box cover with screw holes 17 are respectively configured as rectangular structures or circular structures of the same size, which can be adapted to different assembly space environments.

[0030] Embodiment 2

[0031] On the basis of Example 1, the lower box cover 17 with screw holes is configured as a rectangular frame structure, and a plurality of supporting ribs 18 are provided on the inner wall of the lower box cover 17 with screw holes. A plurality of heat dissipation grooves 19 are formed between the plurality of supporting ribs 18 and the lower box cover 17 with screw holes, which play a role in accelerating heat dissipation to a certain extent after assembly.

[0032] In addition, the first electric belt sealing plug with holes 12 and the second electric belt sealing plug with holes 13 are preferably respectively configured as waist-shaped structures or circular structures, with smooth and beautiful appearance, etc., which are convenient for hand-held insertion of the electric belt 11.

[0033] Embodiment 3

[0034] On the basis of the first or second embodiment, a third terminal 22 is provided in the symmetrical centerline cavity of the junction box body 10 and between the first terminal 20 and the second terminal 21;

[0035] Among them, the first wiring terminal 20, the second wiring terminal 21, and the third wiring terminal 22 used in conjunction with each other can be used to connect a three-phase electric heating belt;

[0036] In addition, when a single-phase electric heating tape is used, the third terminal 22 is not used.

[0037] The working principle or structural principle of the electric heating cable explosion-proof single and double power supply junction box for the electric heating cable system of this structure:

[0038] (1) Insert the two electric heating tapes 11 into the first electric heating tape with hole sealing plug 12 and the second electric heating tape with hole sealing plug 13 respectively, and one end of the two electric heating tapes 11 is located in the cavity of the junction box body 10, and is connected and fixed to the first wiring terminal 20 and the second wiring terminal 21 at the same time;

[0039] (2) The sealing ring gaskets 23 are respectively attached to the inner walls of the two sides of the cavity of the junction box body 10;

[0040] (3) The upper sealing end cover 14 with screw holes and the lower sealing end cover 16 with screw holes are tightly pressed against the sealing ring gaskets 23 on the inner walls of the two sides of the cavity of the junction box body 10;

[0041] (4) Align the upper box cover 15 with screw holes and the lower box cover 17 with screw holes to the surfaces of the upper sealed end cover 14 with screw holes and the lower sealed end cover 16 with screw holes, respectively, and fasten the four corners of the upper box cover 15 with screw holes, the lower box cover 17 with screw holes, the junction box body 10, the upper sealed end cover 14 with screw holes, and the lower sealed end cover 16 with screw holes in series with bolts.

[0042] The explosion-proof single- and double-power junction box for electric heating belt systems of this structure is suitable for environments with a rated power of 220V / 380V and a rated current of ≤25A or ≤40A. The protection level reaches IP54 and IP65, and it can be used for single-phase and three-phase electric heating belts.

[0043] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0044] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An explosion-proof single- and double-power junction box for electric heating tapes for an electric heating tape system, comprising a junction box body (10) and a set of electric heating tapes (11), characterized in that: The inner wall of the cavity of the junction box body (10) is symmetrically provided with a first connection terminal (20) and a second connection terminal (21). The outer walls at both ends of the junction box body (10) are provided with a first electric belt sealing plug-in block with holes (12) and a second electric belt sealing plug-in block with holes (13). The inner walls of the two cavities of the junction box body (10) are respectively provided with sealing ring gaskets (23). An upper sealing end cover (14) with screw holes and a lower sealing end cover (16) with screw holes for use with a sealing ring gasket (23) are respectively arranged on both sides of the junction box body (10). The upper sealing end cover with screw holes (14) and the lower sealing end cover with screw holes (16) are respectively provided with an upper box cover with screw holes (15) and a lower box cover with screw holes (17) for use in conjunction with the junction box body (10); When the junction box body (10), the upper sealing end cover with screw holes (14), the lower sealing end cover with screw holes (16), the upper box cover with screw holes (15), and the lower box cover with screw holes (17) are assembled, the four corners are fastened and assembled by bolts.

2. The electric heating tape explosion-proof single- and double-power supply junction box for the electric heating tape system according to claim 1 is characterized in that: The junction box body (10), the upper sealed end cover with screw holes (14), the upper box cover with screw holes (15), the lower sealed end cover with screw holes (16), and the lower box cover with screw holes (17) are respectively arranged to be rectangular structures or circular structures with the same size.

3. The electric heating tape explosion-proof single- and double-power supply junction box for the electric heating tape system according to claim 1 is characterized in that: The lower box cover (17) with screw holes is arranged as a rectangular frame structure, a plurality of supporting ribs (18) are arranged on the inner wall of the lower box cover (17) with screw holes, and a plurality of heat dissipation grooves (19) are formed between the plurality of supporting ribs (18) and the lower box cover (17) with screw holes.

4. The electric heating tape explosion-proof single- and double-power supply junction box for the electric heating tape system according to claim 1 is characterized in that: The first electric belt sealing plug-in block with holes (12) and the second electric belt sealing plug-in block with holes (13) are respectively configured as a waist-shaped structure or a circular structure.

5. The electric heating tape explosion-proof single- and double-power supply junction box for the electric heating tape system according to claim 1 or 3, characterized in that: A third wiring terminal (22) is provided in the symmetrical centerline cavity of the wiring box body (10) and between the first wiring terminal (20) and the second wiring terminal (21); The first connecting terminal (20), the second connecting terminal (21) and the third connecting terminal (22) used in combination can be used to connect a three-phase electric heating belt; when a single-phase electric heating belt is used, the third connecting terminal (22) is not used.

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