Explosion-proof intermediate junction box

Abstract

The utility model provides an explosion-proof intermediate junction box, and aims to solve the technical problem that the temperature of a wiring terminal in an explosion-proof junction box cannot be detected in time. The junction box comprises: a chassis; the plurality of insulators are arranged in the case; the plurality of busbars are correspondingly arranged on the insulators, and each busbar is provided with a connecting bolt; the plurality of temperature measuring elements are arranged on the busbar; and the temperature instrument is arranged on the box cover and is electrically connected with all the temperature measuring elements. The top of the insulator is provided with the busbar, the two cables are connected through the connecting bolt on the busbar, then the temperature measuring element is arranged on each busbar, the temperature instrument is installed on the box cover, and the temperature measuring elements are electrically connected with the temperature instrument, so that the temperature of each busbar is monitored in real time. The temperature of the busbar can be seen in real time from the outside of the case, so that when an abnormality occurs in the junction box, the abnormality can be observed at the first time, and a scheme for discharging the abnormality can be given at the first time.

Description

Technical Field

[0001] The utility model relates to a junction box, in particular to an explosion-proof intermediate junction box. Background Art

[0002] When connecting two cables in an explosion-proof area, direct connection is not allowed. Instead, the connection needs to be made using the terminal blocks inside the intermediate junction box, where A, B, C, and N are connected to the same fixing bolts. The wiring is relatively cumbersome, and there are risks of fixing bolt loosening and heating. Currently, the junction box cannot detect the internal operating state of the terminal blocks. The current and voltage can only be observed at the power supply side, and the temperature of the internal terminal blocks cannot be monitored in a timely manner. Any abnormality inside cannot be discovered and eliminated immediately. Summary of the Utility Model

[0003] Aiming at the technical problem that the temperature of the terminal blocks in the current explosion-proof junction box cannot be detected in a timely manner, the utility model provides an explosion-proof intermediate junction box, which has the advantage of being able to monitor the temperature of each terminal block in real time.

[0004] The technical solution of the utility model is as follows:

[0005] An explosion-proof intermediate junction box, comprising:

[0006] A chassis with a box cover;

[0007] A plurality of insulators arranged inside the chassis;

[0008] A plurality of busbars correspondingly arranged on the insulators, each busbar having a connection bolt;

[0009] A plurality of temperature measuring elements arranged on the busbars;

[0010] A temperature meter arranged on the box cover and electrically connected to all temperature measuring elements.

[0011] Optionally, the busbar has a plurality of connection bolts.

[0012] Optionally, four of the insulators are arranged inside the chassis, and each insulator is provided with a busbar at its top.

[0013] Optionally, there is also a busbar arranged on the inner wall of the chassis.

[0014] Optionally, the number of the temperature measuring elements is one less than the number of the busbars, and each busbar connected to the insulator is provided with a temperature measuring element.

[0015] Optionally, all the busbars are arranged in parallel, and there is a height difference between adjacent insulators.

[0016] Optionally, both sides of the chassis are provided with a plurality of cable ports.

[0017] Optionally, the bottom ends of all the insulators are mounted on a bottom plate.

[0018] Optionally, the busbars provided on the insulators are respectively connected to three lines of three-phase electricity, and in addition, there is also a busbar connected to the neutral line.

[0019] Optionally, a voltage meter and / or an ammeter are also provided on the cover of the chassis.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] First, insulators are arranged inside the chassis, and busbars are arranged on the tops of the insulators. Two cables are connected through the connection bolts on the busbars. Then, a temperature measuring element is arranged on each busbar. By installing a temperature meter on the cover of the box and electrically connecting the temperature measuring element to the temperature meter, the real-time temperature monitoring of each busbar can be realized.

[0022] Through this technical solution, the temperature of the busbar can be seen in real time from the outside of the chassis, so that when an abnormality occurs inside the junction box, it can be observed immediately, so as to give a solution to eliminate the abnormality in the first time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a top view structural schematic diagram of the present utility model;

[0025] Figure 2 It is an internal structural schematic diagram of the present utility model;

[0026] Figure 3 It is a structural schematic diagram of the outside of the cover of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present utility model. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the products of the present utility model are customarily placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 construed as a limitation to the present utility model.

[0029] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present utility model provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0030] The embodiments of the present utility model will be described in detail below with reference to the drawings.

[0031] Embodiment:

[0032] See Figures 1 - 3 , an explosion-proof intermediate junction box, comprising a chassis 1, a box cover, insulators 2, busbars 3, temperature measuring elements 4, and a temperature instrument 5. Specifically, the chassis 1 is rectangular, and one side of the chassis 1 is provided with a door, and a box cover is arranged on the chassis 1.

[0033] There are 4 groups of insulators 2, and each group of insulators 2 is provided with a busbar 3. A connecting bolt 6 is arranged on each busbar 3, and a cable can be connected to the busbar 3 through the connecting bolt 6. In addition, there is also a busbar 3 arranged inside the chassis 1. A temperature measuring element 4 is arranged on all the busbars 3. In addition, a temperature instrument 5 is arranged on the box cover, and the temperature instrument panel is electrically connected to all the temperature measuring elements 4, and the temperature value measured by each temperature measuring element 4 is reflected through the temperature instrument 5.

[0034] Among them, the temperature measuring element 4 can be a temperature sensor. The bus bar 3 is made of metal, generally cast iron or aluminum, and bolt holes are provided on the bus bar 3 for installing connection bolts 6. The insulator 2 is generally made of ceramic. The temperature instrument 5 has multiple display areas, and each display area shows a temperature value, and the corresponding cable connected to the bus bar 3 is marked in the corresponding area.

[0035] In this embodiment, first, the insulator 2 is arranged in the chassis 1, and the bus bar 3 is arranged on the top of the insulator 2. Two cables are connected through the connection bolts 6 on the bus bar 3. Then, a temperature measuring element 4 is arranged on each bus bar 3. By installing the temperature instrument 5 on the box cover and electrically connecting the temperature measuring element 4 to the temperature instrument 5, the real-time temperature monitoring of each bus bar 3 can be realized.

[0036] Through this technical solution, the temperature of the bus bar 3 can be seen in real time from the outside of the chassis 1, so that when an abnormality occurs inside the junction box, it can be observed immediately, so as to give a solution to eliminate the abnormality in time.

[0037] In one specific embodiment:

[0038] The bus bar 3 has multiple bolt holes, and each bolt hole is provided with a connection bolt 6. Through this design, several cables can be connected to the same bus bar 3. <(

[0039] In another specific embodiment:

[0040] The 4 bus bars 3 arranged on the insulator 2 are respectively connected to three lines of three-phase electricity and one of them is connected to the neutral line. One bus bar 3 arranged on the chassis 1 is used to connect the ground wire.

[0041] Since there is no current in the ground wire, the temperature measuring element 4 is only installed on the 4 bus bars 3 arranged on the insulator 2, so the number of temperature measuring elements 4 is one less than the number of bus bars 3.

[0042] Through this design, the production cost can be reduced and the practicability can be improved.

[0043] In another specific embodiment:

[0044] The bus bar 3 is in a long strip structure, and all the bus bars 3 are arranged in parallel in the chassis 1. There is a height difference between adjacent insulators 2. At the same time, the insulator 2 in the middle is the highest, and the ones on both sides are the second.

[0045] Through this design, when installing cables, the problem of mutual contact of cables can be avoided.

[0046] In another specific embodiment:

[0047] Both sides of the chassis 1 are provided with a plurality of cable ports 7. Generally speaking, one side of the chassis 1 has three cable ports 7, and the other side has two cable ports 7. The three cable ports 7 on the same side of the chassis 1 are used for routing the three lines of the three-phase power, and the two cable ports 7 on the other side of the chassis 1 are used for routing the neutral wire and the ground wire.

[0048] In another specific embodiment:

[0049] The bottom ends of all the insulators 2 are installed on a bottom plate 8. At the same time, the busbar 3 installed on the chassis 1 is also installed on the bottom plate 8. The bottom plate 8 is made of insulating material.

[0050] By providing the bottom plate 8, the case is prevented from being electrified, and at the same time, it can also provide an installation position for the installation of the insulators 2 and the busbar 3.

[0051] In another specific embodiment:

[0052] A voltmeter and / or an ammeter are also provided on the cover of the chassis 1. By providing the ammeter and the voltmeter, the current and voltage of each cable of the three-phase power can be monitored in real time.

[0053] The above-described embodiments only represent the specific implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. An explosion-proof intermediate junction box, characterized in that, Including: A chassis with a cover. Multiple insulators provided inside the chassis. Multiple busbars correspondingly provided on the insulators, with connecting bolts on each busbar. Multiple temperature measuring elements provided on the busbars. A temperature meter provided on the cover and electrically connected to all the temperature measuring elements.

2. The explosion-proof intermediate junction box according to claim 1, characterized in that There are multiple connecting bolts on the busbar.

3. The explosion-proof intermediate junction box according to claim 1, characterized in that There are four of the insulators provided inside the chassis, and one of the busbars is provided on the top of each of the insulators.

4. The explosion-proof intermediate junction box according to claim 3, characterized in that There is also one of the busbars provided on the inner wall of the chassis.

5. The explosion-proof intermediate junction box according to claim 4, characterized in that The number of the temperature measuring elements is one less than the number of the busbars, and one of the temperature measuring elements is provided on each of the busbars connected to the insulators.

6. The explosion-proof intermediate junction box according to claim 1, characterized in that All the busbars are arranged in parallel, and there is a height difference between adjacent insulators.

7. The explosion-proof intermediate junction box according to claim 1, characterized in that There are multiple cable ports on both sides of the chassis.

8. The explosion-proof intermediate junction box according to claim 1, characterized in that The bottoms of all the insulators are mounted on a bottom plate.

9. The explosion-proof intermediate junction box according to claim 1, characterized in that The busbars provided on the insulators are respectively connected to three lines of three-phase electricity, and there is also one busbar connected to the neutral line.

10. The explosion-proof intermediate junction box according to claim 1, characterized in that A voltmeter and / or an ammeter are also provided on the cover of the chassis.

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