Outdoor mutual inductor convenient to install

Abstract

The utility model discloses an outdoor mutual inductor convenient to install, and belongs to the technical field of mutual inductors, the outdoor mutual inductor comprises a mutual inductor body and a shell, the side wall of the shell is fixedly provided with a fixing pipe in a penetrating manner, the fixing pipe is used for sleeving the mutual inductor body, one side of the shell is provided with an end cover, and the shell is circular and is located on the same axis with the fixing pipe; the fixing pipe is an external threaded pipe, a connecting ring in threaded connection with the fixing pipe is arranged on the inner side of the end cover, and a clamping assembly used for fixing the mutual inductor body is arranged on the outer side of the fixing pipe. The mutual inductor has the advantages that the mutual inductor body is clamped and fixed through the internal thread ring, the fixing pipe, the pressing ring and the pressing pad, when the mutual inductor body is connected in a sleeved mode, the mutual inductor body is arranged on the outer surface of the internal thread ring which is installed on the outer side of the fixing pipe in advance in a sleeved mode, and the mutual inductor body is clamped and fixed. The insulation layer wound on the surface of the mutual inductor body is effectively prevented from being damaged by friction with threads on the outer surface of the fixing pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of mutual inductors, in particular to an outdoor mutual inductor which is easy to install. Background Art

[0002] A current transformer is an instrument that converts a large primary current into a small secondary current for measurement based on the principle of electromagnetic induction. When the current transformer is working, its secondary circuit is always closed. Therefore, the impedance of the series coil between the measuring instrument and the protection circuit is very small, and the working state of the current transformer is close to a short circuit.

[0003] Most outdoor transformers are installed in a shell. A hollow tube is provided in the middle of the shell. The hollow tube is an externally threaded tube. The end cover of the shell is threadedly connected to the hollow tube to achieve fixed installation of the end cover. Even if the transformer is installed in a closed state inside the shell, there are thread rings on the surface of the hollow tube. When the transformer is fitted onto the hollow tube, the insulation layer wrapped around the surface of the transformer is prone to friction with the thread rings, causing wear of the insulation layer. Utility Model Content

[0004] The purpose of the utility model is to solve the above-mentioned technical problems and to provide an outdoor mutual inductor that is easy to install.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A kind of outdoor transformer that is easy to install includes a transformer body and a shell. The side wall of the shell is fixedly penetrated by a fixing tube for sleeve connection of the transformer body. An end cover is provided on one side of the shell. A bottom shell is provided at the lower end of the shell. Mounting plates are fixed on both sides of the bottom shell. Two terminal posts are symmetrically provided on the outside of the bottom shell. The shell is circular and is located on the same axis as the fixing tube. The fixing tube is an externally threaded tube. A connecting ring threadedly connected to the fixing tube is provided on the inner side of the end cover. A clamping assembly for fixing the transformer body is provided on the outer side of the fixing tube.

[0007] As a further description of the above technical solution:

[0008] The clamping assembly includes two internal threaded rings symmetrically sleeved on the outside of the fixed tube and a clamping ring arranged on the opposite side of the two internal threaded rings. The clamping ring is fixedly connected to the outer end surface of the internal threaded ring by bolts, and a clamping pad is respectively provided between the two clamping rings and the transformer body.

[0009] As a further description of the above technical solution:

[0010] The side wall of the connecting ring is provided with a first annular groove for threaded connection with the fixing pipe, and a first sealing gasket matched with the fixing pipe is provided inside the first annular groove.

[0011] As a further description of the above technical solution:

[0012] An end ring is provided on the outer side of the shell, a second annular groove matched with the end ring is provided on the inner side of the end cover, and a second sealing gasket matched with the end ring is provided inside the second annular groove.

[0013] As a further description of the above technical solution:

[0014] The outer edge of the end cover is provided with anti-slip lines.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0016] In the utility model, by arranging an internal thread ring, a fixing tube, a clamping ring and a clamping pad, the transformer body is clamped and fixed. When the transformer body is sleeved, the transformer body is sleeved on the outer surface of the internal thread ring pre-installed on the outside of the fixing tube, effectively avoiding damage caused by friction between the insulating layer wrapped around the surface of the transformer body and the thread on the outer surface of the fixing tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure shows the appearance of the transformer housing provided according to the embodiment of the present utility model;

[0018] Figure 2 An exploded schematic diagram of a mutual inductor and a housing structure provided according to an embodiment of the present utility model is shown;

[0019] Figure 3 A schematic structural diagram of a clamping assembly according to an embodiment of the present utility model is shown;

[0020] Figure 4 An exploded schematic diagram of the internal thread ring, the clamping ring and the clamping bolt structure provided according to an embodiment of the utility model is shown.

[0021] Legend: 1. Outer shell; 2. End cover; 3. Bottom shell; 4. Mounting plate; 5. Terminal block; 6. Transformer body; 7. Fixing tube; 8. Internal thread ring; 9. Clamping ring; 10. Clamping pad; 11. Bolt; 12. First sealing pad; 13. Second sealing pad; 14. Connecting ring; 15. End ring. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] like Figure 1-Figure 4 As shown, an outdoor transformer that is easy to install includes a transformer body 6 and a shell 1. A fixing tube 7 for sleeved on the transformer body 6 is fixedly provided on the side wall of the shell 1. An end cover 2 is provided on one side of the shell 1. A bottom shell 3 is provided at the lower end of the shell 1. Mounting plates 4 are fixed on both sides of the bottom shell 3. Two terminal posts 5 are symmetrically provided on the outside of the bottom shell 3. The shell 1 is circular and is located on the same axis as the fixing tube 7. The fixing tube 7 is an externally threaded tube. A connecting ring 14 threadedly connected to the fixing tube 7 is provided on the inner side of the end cover 2. A clamping assembly for fixing the transformer body 6 is provided on the outside of the fixing tube 7. During installation, the staff first sleeves the transformer body 6 on the outside of the fixing tube 7, and then cooperates with the thread of the fixing tube 7 through the connecting ring 14, so that the end cover 2 is fixedly installed on the end of the shell 1. The installation operation is relatively convenient.

[0024] Furthermore, the clamping assembly includes two internal threaded rings 8 symmetrically sleeved on the outside of the fixed tube 7 and a clamping ring 9 provided on the opposite side of the two internal threaded rings 8. The clamping ring 9 is fixedly connected to the outer end surface of the internal threaded ring 8 by a bolt 11. A clamping pad 10 is provided between the two clamping rings 9 and the transformer body 6. When installing the transformer body 6, first adjust the internal threaded ring 8 on the inside of the fixed tube 7 to preliminarily define the position of the transformer body 6 on the fixed tube 7, and then align the internal threaded ring 8 on the outside of the fixed tube 7 with the fixed tube 7. The tube 7 is threadedly sleeved, and by tightening the outer internal threaded ring 8, the outer internal threaded ring 8 drives the clamping ring 9 to move. Through the mutual cooperation of the two clamping rings 9, the transformer body 6 is clamped and fixed, effectively ensuring the stability of the installation of the transformer body 6. At the same time, when the transformer body 6 is sleeved, the transformer body 6 is sleeved on the outer surface of the internal threaded ring 8, effectively avoiding the friction between the insulating layer wrapped on the surface of the transformer body 6 and the thread of the outer surface of the fixed tube 7, causing the insulating layer on the surface of the transformer body 6 to wear.

[0025] Furthermore, a first annular groove for threaded connection with the fixing pipe 7 is opened on the side wall of the connecting ring 14, and a first sealing gasket 12 matching with the fixing pipe 7 is provided inside the first annular groove, effectively ensuring the sealing of the connection between the connecting ring 14 and the fixing pipe 7.

[0026] Furthermore, an end ring 15 is provided on the outside of the shell 1, and a second annular groove matching the end ring 15 is opened on the inside of the end cover 2. A second sealing gasket 13 matching the end ring 15 is provided inside the second annular groove, which effectively ensures the sealing of the connection between the end cover 2 and the end ring 15.

[0027] Furthermore, the outer edge of the end cover 2 is provided with anti-slip grooves, which makes it convenient for staff to hold the end cover 2 and rotate it.

[0028] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An outdoor transformer that is easy to install, comprising a transformer body (6) and a housing (1), wherein a fixing tube (7) for sleeve connection of the transformer body (6) is fixedly provided through the side wall of the housing (1), an end cover (2) is provided on one side of the housing (1), a bottom shell (3) is provided at the lower end of the housing (1), mounting plates (4) are fixedly provided on both sides of the bottom shell (3), and two terminal posts (5) are symmetrically provided on the outer side of the bottom shell (3), characterized in that: The housing (1) is circular and is located on the same axis as the fixing tube (7); the fixing tube (7) is an externally threaded tube; a connecting ring (14) threadedly connected to the fixing tube (7) is provided on the inner side of the end cover (2); and a clamping assembly for fixing the transformer body (6) is provided on the outer side of the fixing tube (7).

2. The outdoor mutual inductor that is easy to install according to claim 1, characterized in that: The clamping assembly comprises two internal threaded rings (8) symmetrically sleeved on the outside of the fixed tube (7) and a clamping ring (9) arranged on the opposite side of the two internal threaded rings (8); the clamping ring (9) is fixedly connected to the outer end surface of the internal threaded ring (8) by a bolt (11); and a clamping pad (10) is respectively provided between the two clamping rings (9) and the transformer body (6).

3. The outdoor mutual inductor that is easy to install according to claim 2, characterized in that: A first annular groove for threaded connection with the fixing tube (7) is provided on the side wall of the connecting ring (14), and a first sealing gasket (12) matching with the fixing tube (7) is provided inside the first annular groove.

4. The outdoor mutual inductor that is easy to install according to claim 1, characterized in that: An end ring (15) is provided on the outer side of the housing (1), a second annular groove matching the end ring (15) is provided on the inner side of the end cover (2), and a second sealing gasket (13) matching the end ring (15) is provided inside the second annular groove.

5. The outdoor mutual inductor that is easy to install according to claim 1, characterized in that: The outer edge of the end cover (2) is provided with anti-slip lines.

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