Junction box and dry-type transformer

Abstract

The utility model discloses a junction box and a dry-type transformer. The junction box comprises a box body and a box cover, the box body is made of sheet metal parts, the box body comprises a bottom plate, two first side plates and two second side plates, the two first side plates are oppositely arranged, the two second side plates are oppositely arranged, the first side plates and the second side plates are connected with the bottom plate, and the bottom plate, the first side plates and the second side plates define a containing cavity. The first side plate and / or the second side plate are / is provided with a wire passing hole, and the wire passing hole is used for installing a waterproof connector to fix a cable. The box cover is made of a sheet metal part, the box cover covers the box body, the box body is fixedly connected with the box cover, and a sealing part is arranged between the box body and the box cover. The junction box does not need to design a mold, is short in manufacturing process, low in manufacturing cost and good in sealing effect, and can effectively prevent water from entering the junction box so as to protect an electrical circuit in the junction box from being soaked in water or affected with damp, thereby protecting the safety of electrical equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to transformer technical field, especially a kind of terminal box of transformer fan and dry-type transformer. BACKGROUND

[0002] Dry-type transformer is large in heat generation when operating, and usually adopts forced air cooling heat dissipation mode, which is to install fan at the bottom of the transformer, and the fan needs to be arranged with lines for control, so a terminal box is installed on the transformer to arrange lines to control the operation of all fans. The terminal box is usually composed of two parts of shell and cover, and the inside of the terminal box is installed with guide rail and terminal wiring to realize the function of controlling fan. The existing terminal box is integrally formed by die casting aluminum, so a special mold is needed for die casting. Since the terminal box is formed by die casting, the size and style are relatively fixed, and different molds need to be designed for different terminal boxes, which is high in cost. SUMMARY

[0003] The utility model aims at at least one of the technical problems existing in the prior art. To this end, the utility model provides a terminal box, which aims to reduce the manufacturing cost of the terminal box while maintaining its waterproof function.

[0004] The utility model further provides a dry-type transformer using the terminal box.

[0005] According to the terminal box of the first aspect of the utility model, the shell is made of sheet metal part, the shell includes bottom plate, two first side plates and two second side plates, the two first side plates are oppositely arranged, the two second side plates are oppositely arranged, the first side plate and the second side plate are connected with the bottom plate, the bottom plate, the first side plate and the second side plate form a cavity, the first side plate and / or the second side plate are provided with wire hole, the wire hole is used for installing waterproof joint to fix cable; the cover is made of sheet metal part, the cover is arranged on the shell, the shell is fixedly connected with the cover, and sealing element is arranged between the shell and the cover.

[0006] According to the terminal box of the utility model, the terminal box is made of sheet metal part, without the need of designing mold, short manufacturing process, low manufacturing cost, and the size of the terminal box can be flexibly designed according to actual installation position and hole distance to meet different needs; sealing element is arranged on the contact surface of the shell and the cover, waterproof joint is installed on the wire hole of the shell, good sealing effect can effectively prevent water from entering the terminal box to protect the electrical circuit in the terminal box from being immersed or damp, thereby protecting the safety of electrical equipment.

[0007] According to some embodiments of the present application, one of the first side plate or the second side plate is in an integral structure with the bottom plate.

[0008] According to some embodiments of the present application, along the length direction of the first side plate, both sides of the bottom plate are provided with an extension part, the extension part is provided with a second mounting hole, the second mounting hole is used for penetrating a fixing member to fix the junction box to a corresponding mounting plate.

[0009] According to some embodiments of the present application, the first side plate and the second side plate are provided with a first folded edge away from the bottom plate, the first folded edge is in abutment with the sealing member.

[0010] According to some embodiments of the present application, the first folded edge is provided with a third mounting hole, the box cover is correspondingly provided with a fourth mounting hole, the box cover is fixedly connected with the box body through the fixing member penetrating the third mounting hole and the fourth mounting hole.

[0011] According to some embodiments of the present application, the sealing member is provided with a relief hole, the relief hole is used for avoiding the fixing member penetrating the third mounting hole and the fourth mounting hole.

[0012] According to some embodiments of the present application, the box cover is provided with a second folded edge in the circumferential direction, the second folded edge is located outside the first side plate and the second side plate and extends towards the bottom plate.

[0013] According to some embodiments of the present application, the first side plate is in an integral structure with the bottom plate, and the second side plate is welded with the bottom plate.

[0014] According to some embodiments of the present application, the cavity is provided with a mounting member, the mounting member is fixedly connected with the bottom plate, and the mounting member is provided with a plurality of first mounting holes arranged along the length direction of the mounting member.

[0015] The dry-type transformer according to the second aspect of the present application comprises the junction box according to any one of the above.

[0016] The dry-type transformer according to the present application has at least the following beneficial effects: the junction box is made of sheet metal parts, without the need for designing molds, with a short manufacturing process and low manufacturing cost, and the size of the junction box can be flexibly designed according to the actual installation position and hole distance to meet different needs; the sealing member is arranged on the contact surface of the shell and the box cover, and the waterproof joint is arranged on the wire hole of the shell, with good sealing effect, which can effectively prevent water from entering the junction box to protect the electrical circuit in the junction box from being immersed or damp, thereby protecting the safety of the electrical equipment.

[0017] The additional aspects and advantages of the present application will be given partly in the following description, partly will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The present application will be further described below in conjunction with the drawings and embodiments, wherein:

[0019] Figure 1 is a perspective view of the junction box according to an embodiment of the present application;

[0020] Figure 2 is a perspective exploded view of the junction box according to an embodiment of the present application;

[0021] Figure 3 is a perspective exploded view of the junction box according to an embodiment of the present application;

[0022] Figure 4 is a perspective view of the cover of the junction box according to an embodiment of the present application;

[0023] Figure 5 is a sectional view of the junction box according to an embodiment of the present application;

[0024] Figure 6 is an installation view of the junction box according to an embodiment of the present application;

[0025] Figure 7 is Figure 6 is an enlarged view of A in FIG.

[0026] REFERENCE NUMERALS:

[0027] junction box 10;

[0028] box body 100, bottom plate 110, first side plate 120, wire passing hole 121, second side plate 130, extension 140, second mounting hole 141, first folding edge 150, third mounting hole 151, accommodating cavity 160, mounting member 170, first mounting hole 171, guide rail 180;

[0029] cover 200, second folding edge 210, fourth mounting hole 211, sealing member 220, avoiding hole 221, fixing member 230;

[0030] mounting plate 300;

[0031] dry-type transformer 400, fan 410, base 420. DETAILED DESCRIPTION

[0032] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, are for the purpose of explanation only and are not to be construed as limiting the present application.

[0033] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by left, right and the like is based on the orientation or position relationship shown in the drawings, which is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application.

[0034] In the description of the present application, if there is a description of first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the sequence of technical features indicated.

[0035] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting and the like should be broadly understood, and the skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0036] With reference to Figures 1 to 5 The wiring box 10 provided by the embodiment of the present application comprises a box body 100 and a box cover 200, the box body 100 and the box cover 200 are both made of sheet metal parts, a mold does not need to be designed, the manufacturing process is short, the manufacturing cost is low, and the size of the wiring box 10 can be flexibly designed according to the actual installation position and hole distance, different requirements can be met.

[0037] With reference to Figure 2The box body 100 comprises a bottom plate 110, two first side plates 120 and two second side plates 130. The two first side plates 120 are oppositely arranged, and the two second side plates 130 are oppositely arranged. The first side plates 120 and the second side plates are connected with the bottom plate 110. The bottom plate 110, the first side plates 120 and the second side plates enclose a containing cavity 160. The two first side plates 120 are provided with wire passing holes 121. The wire passing holes 121 are used for installing waterproof joints to fix the cables, so as to prevent moisture from penetrating into the containing cavity 160 from the wire passing holes 121. The box cover 200 is arranged on the box body 100. The box body 100 is fixedly connected with the box cover 200. A sealing element 220 is arranged between the box body 100 and the box cover 200. The sealing element 220 can be made of a rubber strip or other common sealing materials. The sealing element 220 is used for preventing moisture from penetrating into the containing cavity 160 from the joint between the box body 100 and the box cover 200. By arranging the waterproof joints on the wire passing holes 121 and arranging the sealing element 220 on the joint between the box body 100 and the box cover 200, the sealing effect is good, and the moisture can be effectively prevented from entering the junction box 10, so as to protect the electrical lines in the junction box 10 from being immersed in water or being damp, and further protect the safety of the electrical equipment.

[0038] It can be understood that, in some embodiments, the wire passing holes 121 are arranged on the second side plates 130, or the wire passing holes 121 are respectively arranged on one of the first side plates 120 and one of the second side plates 130, which are not limited herein.

[0039] With reference to Figure 2 , Figure 4 In some embodiments, the first side plates 120 or the second side plates 130 are in an integral structure with the bottom plate 110, so as to facilitate arranging the extension portions 140 on the bottom plate 110, thereby facilitating the mounting of the junction box 10 to the corresponding mounting plate 300.

[0040] Specifically, with reference to Figure 1 , Figure 2 In some embodiments, the first side plates 120 are in an integral structure with the bottom plate 110. Along the length direction of the first side plates 120, the two sides of the bottom plate 110 are provided with the extension portions 140. The extension portions 140 extend away from the second side plates 130, so that the extension portions 140 are located on the side of the second side plates 130 away from the containing cavity 160. The extension portions 140 are in an integral structure with the bottom plate 110. The extension portions 140 are provided with second mounting holes 141. The corresponding mounting plates 300 are provided with assembly holes corresponding to the second mounting holes 141. The fixing elements 230 such as bolts are arranged in the second mounting holes 141 and the assembly holes, so as to fix the junction box 10 to the mounting plate 300 through the fixing elements 230. By arranging the extension portions 140 on the bottom plate 110 away from the second side plates 130, the fixing elements 230 can be arranged in the second mounting holes 141, so as to facilitate the fixed connection between the junction box 10 and the mounting plate 300.

[0041] With reference toFigure 2 、 Figure 4 In some embodiments, the first side plate 120 and the second side plate 130 are provided with a first folded edge 150 away from the bottom plate 110, the first folded edge 150 is formed by folding the first side plate 120 and the second side plate 130, the first folded edge 150 is an integral structure with the corresponding first side plate 120 or the second side plate 130, thus facilitating the processing of the first folded edge 150, the first folded edge 150 is used to abut the sealing element 220, increasing the contact surface of the sealing element 220 with the first side plate 120 and the second side plate 130, improving the sealing performance between the box body 100 and the box cover 200, and by providing the first folded edge 150 on the first side plate 120 and the second side plate 130, the strength of the box body 100 can be improved.

[0042] Referring to Figure 2 In some embodiments, the first folded edge 150 is provided with a third mounting hole 151, and the box cover 200 is correspondingly provided with a fourth mounting hole 211, and the box cover 200 is fixedly connected with the box body 100 through a fixing element 230 such as a bolt provided in the third mounting hole 151 and the fourth mounting hole 211, so that the box body 100 and the box cover 200 are detachably connected through the fixing element 230, facilitating the assembly and disassembly of the box body 100 and the box cover 200, and facilitating the maintenance and maintenance of the junction box 10.

[0043] Referring to Figure 3 In some embodiments, the sealing element 220 is provided with an avoiding hole 221, the avoiding hole 221 is used to avoid the fixing element 230 provided in the third mounting hole 151 and the fourth mounting hole 211, the fixing element 230 passes through the avoiding hole 221, while achieving the fixed connection between the box body 100 and the box cover 200, the sealing element 220 can also be limited, so as to prevent the displacement of the sealing element 220 when the box body 100 and the box cover 200 are assembled, so as to protect the sealing effect between the box body 100 and the box cover 200.

[0044] Referring to Figure 4 、 Figure 5 In some embodiments, the box cover 200 is provided with a second folded edge 210 in the circumferential direction, the second folded edge 210 is located outside the first side plate 120 and the second side plate 130 and extends towards the bottom plate 110, the second folded edge 210 is formed by folding the box cover 200 and is an integral structure with the box cover 200, thus facilitating the processing of the second folded edge 210, the second folded edge 210 wraps part of the first side plate 120 and the second side plate 130, effectively improving the waterproof effect of the junction box 10 as a whole. And by providing the second folded edge 210 on the box cover 200, the strength of the box cover 200 can be improved.

[0045] In some embodiments, the first side plate 120 is integrally formed with the bottom plate 110, the second side plate 130 is separately formed with the bottom plate 110, and the second side plate 130 is integrally welded with the bottom plate 110.

[0046] Referring to Figure 2 In some embodiments, the mounting member 170 is arranged in the cavity 160, the mounting member 170 is fixedly connected with the bottom plate 110, a plurality of first mounting holes 171 are arranged on the mounting member 170, the plurality of first mounting holes 171 are arranged along the length direction of the mounting member 170, the mounting member 170 is used for mounting the guide rail 180, and when the guide rail 180 is mounted, the appropriate first mounting hole 171 can be selected to assemble the fixing member 230, so as to facilitate the mounting of the guide rail 180.

[0047] It can be understood that the mounting member 170 and the bottom plate 110 can be fixedly connected in a manner of welding or the fixing member 230, which is not limited herein.

[0048] Referring to Figure 6 、 Figure 7 The dry-type transformer 400 provided by the embodiment of the utility model, comprising the junction box 10 of any one of the above, the dry-type transformer 400 is installed with the fan 410, the fan 410 is used for the heat dissipation of dry-type transformer 400, the cable of fan 410 is connected to junction box 10, junction box 10 can be installed on the base 420 of dry-type transformer 400 or other components, and junction box 10 can be installed on the base 420 or other components through mounting plate 300, also can directly install junction box 10 on the base 420 or other components.

[0049] The junction box 10 of the utility model is made of sheet metal parts, without the need to design a mold, the manufacturing process is short, the manufacturing cost is low, and the size of the junction box 10 can be flexibly designed according to the actual installation position and hole pitch, meeting different needs; the sealing member 220 is arranged on the contact surface of the shell and the box cover 200, the waterproof joint is arranged on the wire hole 121 of the shell, the sealing effect is good, and water can be effectively prevented from entering the junction box 10, so as to protect the electrical circuit in the junction box 10 from being immersed or damp, and further protect the safety of the electrical equipment.

[0050] The technical features of the above-described embodiments can be combined arbitrarily, and to make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0051] Of course, the utility model is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or replacements without departing from the spirit of the utility model, and these equivalent modifications or replacements are all included in the range defined by the claims of the application.

Claims

1. A junction box, characterized in that, include: The box body is made of sheet metal and includes a bottom plate, two first side plates and two second side plates. The two first side plates are arranged opposite each other, and the two second side plates are arranged opposite each other. The first side plates and the second side plates are connected to the bottom plate. The bottom plate, the first side plates and the second side plates form a cavity. The first side plates and / or the second side plates are provided with wire passage holes for installing waterproof connectors to fix cables. The lid is made of sheet metal and is placed on the box body. The box body and the lid are fixedly connected, and a sealing element is provided between the box body and the lid.

2. The junction box according to claim 1, characterized in that, One of the first side plate or the second side plate is integrally formed with the base plate.

3. The junction box according to claim 1, characterized in that, Along the length of the first side plate, the bottom plate has extensions on both sides, and the extensions have second mounting holes for fasteners to pass through in order to fix the junction box to the corresponding mounting plate.

4. The junction box according to claim 1, characterized in that, The first side plate and the second side plate are provided with a first folded edge on the side away from the bottom plate, and the first folded edge abuts against the sealing element.

5. The junction box according to claim 4, characterized in that, The first folded edge is provided with a third mounting hole, and the box cover is provided with a corresponding fourth mounting hole. The box cover is fixedly connected to the box body through a fastener that passes through the third mounting hole and the fourth mounting hole.

6. The junction box according to claim 5, characterized in that, The sealing element is provided with a clearance hole, which is used to avoid the fasteners that pass through the third mounting hole and the fourth mounting hole.

7. The junction box according to claim 1, characterized in that, The lid has a second folded edge around its circumference. The second folded edge is located outside the first side plate and the second side plate and extends toward the bottom plate.

8. The junction box according to claim 1, characterized in that, The first side plate and the bottom plate are an integral structure, and the second side plate is welded to the bottom plate.

9. The junction box according to claim 1, characterized in that, The cavity is provided with an installation component, which is fixedly connected to the base plate. The installation component has a plurality of first mounting holes, which are arranged along the length of the installation component.

10. A dry-type transformer, characterized in that, Includes the junction box as described in any one of claims 1 to 9.

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