A magnetic shielding installation device for power transformer

Abstract

The utility model discloses a magnetic shielding installation device for a power transformer, comprising: a connecting shaft and a positioning shaft; the first end of the connecting shaft is fixed to the first end of the positioning shaft; the second end of the connecting shaft is used for clamping with a wrench, and the second end of the positioning shaft is used for clamping with a fixed wire plate. By setting the connecting shaft and the positioning shaft, the connecting shaft and the wrench are clamped, and the positioning shaft and the fixed wire plate are clamped. Under the rotation of the wrench, the threaded hole of the fixed wire plate is rotated with the stud to achieve rapid tightening of the fixed wire plate, thereby achieving rapid assembly of the magnetic shielding; compared with the prior art, this solution greatly improves the installation efficiency of the magnetic shielding, saves manpower, and improves economic benefits.

Description

Technical Field

[0001] The utility model relates to the technical field of power transformers, in particular to a magnetic shielding installation device for a power transformer. Background Art

[0002] A certain number of plates made of magnetic materials are placed between the transformer coil and the oil tank, which is called magnetic shielding. The function of magnetic shielding is to prevent the dispersion of leakage flux, reduce the loss caused by leakage flux, and avoid the formation of hot spots due to uneven spatial distribution of magnetic flux.

[0003] Fixing the magnetic shield inside the oil tank is a key process. If it is not fixed properly, it may cause floating potential and vibration of the magnetic shielding block. Therefore, the construction process must ensure the correctness of the installation. Utility Model Content

[0004] In view of this, the utility model provides a magnetic shielding installation device for a power transformer. By adopting the device to install the magnetic shielding, the installation is simple and quick, and the work efficiency is improved.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A magnetic shielding installation device for a power transformer, comprising: a connecting shaft and a positioning shaft;

[0007] The first end of the connecting shaft is fixed to the first end of the positioning shaft;

[0008] The second end of the connecting shaft is used for snap-fitting with a wrench, and the second end of the positioning shaft is used for snap-fitting with a fixing wire plate.

[0009] In some embodiments, it also includes: a base plate; the first end of the connecting shaft is fixed to the first end of the positioning shaft through the base plate.

[0010] In some embodiments, the connecting shaft is a sleeve, a first end of the sleeve is fixed to the base plate, and a second end of the sleeve is provided with a first clamping portion matching the clamping end of the wrench.

[0011] In some embodiments, the second end of the positioning shaft is provided with a second clamping portion matching the shape of the positioning hole of the fixed wire plate.

[0012] In some embodiments, the first clamping portion is rectangular, and the first clamping portion is a recessed portion.

[0013] In some embodiments, the second clamping portion is circular, and the second clamping portion is a protrusion.

[0014] In some embodiments, there are multiple positioning shafts, the first ends of the multiple positioning shafts are all arranged on the bottom plate, and the position distribution of the multiple positioning shafts corresponds one-to-one to the position distribution of the positioning holes of the fixed wire plate.

[0015] In some embodiments, the projection of the geometric center of the connecting axis in the vertical direction coincides with the projection of the geometric center of the base plate in the vertical direction.

[0016] In some embodiments, the connecting shaft is detachable from the bottom plate, and / or

[0017] The positioning shaft is detachable from the bottom plate.

[0018] In some embodiments, the positioning shaft is a positioning pin.

[0019] It can be seen from the above technical scheme that the magnetic shielding installation device for the power transformer provided by the utility model clamps the connecting shaft and the wrench, and the positioning shaft and the fixed wire plate through the setting of the connecting shaft and the positioning shaft. When the wrench is turned, the threaded hole of the fixed wire plate is rotated and matched with the stud to achieve rapid tightening of the fixed wire plate, thereby achieving rapid assembly of the magnetic shielding. Compared with the prior art, this scheme greatly improves the installation efficiency of the magnetic shielding, saves manpower, and improves economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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 or the description of the prior art 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.

[0021] Figure 1 A schematic diagram of the installation of magnetic shielding in the prior art;

[0022] Figure 2 A schematic diagram of the structure of a magnetic shielding installation device for a power transformer from a front view;

[0023] Figure 3 A schematic diagram of a top view of the structure of a magnetic shielding installation device for a power transformer;

[0024] Figure 4 A schematic diagram of the installation of a magnetic shield provided in an embodiment of the utility model.

[0025] 10 is a magnetic shielding installation device, 11 is a connecting shaft, 12 is a bottom plate, 13 is a positioning shaft, 14 is a first clamping portion, and 15 is a second clamping portion;

[0026] 20 is a fixing wire plate, 21 is a positioning hole, 22 is a threaded hole; 30 is a magnetic shield; 40 is a wrench, 41 is a clamping end; 50 is a stud. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 2-Figure 4 The magnetic shielding installation device for a power transformer provided by the embodiment of the utility model comprises: a connecting shaft 11, a bottom plate 12 and a positioning shaft 13;

[0029] The first end of the connecting shaft 11 is connected to the first end of the positioning shaft 13;

[0030] The second end of the connecting shaft 11 is used for snap-fitting with the wrench 40 , and the second end of the positioning shaft 13 is used for snap-fitting with the fixing wire plate 20 .

[0031] In the prior art, Figure 1 As shown, the magnetic shield 30 is set on the oil tank, and then the threaded hole 21 of the fixing wire plate 20 cooperates with the stud 50 on the oil tank to fix the magnetic shield 30 on the oil tank. During this process, the fixing wire plate 20 needs to be rotated to cooperate with the stud 50. The rotation process is time-consuming and labor-intensive, and it cannot cooperate with the wrench 40, which makes the work efficiency low and requires a lot of manual labor.

[0032] In the technical solution, by setting the connecting shaft 11 and the positioning shaft 13, the second end of the connecting shaft 11 is used for clamping with the wrench 40, and the positioning shaft 13 is clamped with the fixed wire plate 20. When the wrench is turned, the threaded hole 21 of the fixed wire plate 20 is rotated and matched with the stud 50 to achieve rapid tightening of the fixed wire plate 20, thereby achieving rapid assembly of the magnetic shield 30. Compared with the prior art, the present solution greatly improves the installation efficiency of the magnetic shield, saves manpower, improves economic benefits, and has a simple structure and stable effect.

[0033] like Figure 2-Figure 3 As shown, it also includes: a base plate 12; the first end of the connecting shaft 11 is fixed to the first end of the positioning shaft 13 through the base plate 12, and the connection shaft 11 and the positioning shaft 13 are better fixed through the setting of the base plate 12, which reduces the assembly difficulty of the device and is beneficial to the stability of the structure of the device; in some implementations, the base plate 12 is made of steel.

[0034] In this embodiment, the connecting shaft 11 is a sleeve, the first end of the sleeve is fixed to the base plate 12, and the second end of the sleeve is provided with a first clamping portion 14 that matches the clamping end of the wrench 40. Through the setting of the first clamping portion 14, the wrench 40 can be conveniently and quickly matched with the first clamping portion 14, further improving work efficiency.

[0035] Furthermore, the second end of the positioning shaft 13 is provided with a second clamping portion 15 that matches the shape of the positioning hole of the fixed wire plate 20; through the provision of the second clamping portion 15, the positioning shaft 13 can fix the wire plate 20 conveniently and quickly, further improving work efficiency.

[0036] Specifically, Figure 2-Figure 4 The first clamping portion 14 is rectangular and is a recessed portion, so that it can better cooperate with the clamping end of the wrench 40 .

[0037] Further, such as Figure 2-Figure 4 The second clamping portion 15 is circular and is a raised portion, so that it can better cooperate with the fixed wire plate 20.

[0038] Preferably, there are multiple positioning shafts 13, the first ends of the multiple positioning shafts 13 are all arranged on the base plate 12, and the position distribution of the multiple positioning shafts 13 corresponds one by one to the position distribution of the positioning holes 21 of the fixed wire plate 20; such a configuration is conducive to the positioning shaft 13 being more firmly connected to the fixed wire plate 20; of course, in some embodiments, the number of positioning shafts 13 is 2.

[0039] Preferably, the projection of the geometric center of the connecting shaft 11 in the vertical direction coincides with the projection of the geometric center of the bottom plate 12 in the vertical direction. Such an arrangement is beneficial to the stability of the structure of the wrench 40 during the process of rotating the connecting shaft.

[0040] Specifically, the connecting shaft 11 can be detachable from the bottom plate 12, and / or

[0041] The positioning shaft 13 is detachable from the base plate 12. By setting the connecting shaft 11 and the positioning shaft 13 to be detachably connected, on the one hand, it is convenient for maintenance and replacement; on the other hand, the connecting shaft 11 and the positioning shaft 13 can have different models to adapt to different specifications of fixed wire plates 20 and wrenches 40, which is conducive to improving work efficiency and saving costs.

[0042] Specifically, the positioning shaft 13 is a positioning pin. With such a configuration, the positioning pin is a standard part, which is beneficial to cost saving.

[0043] The present invention is further described below in conjunction with specific embodiments:

[0044] In this scheme, a magnetic shielding installation device for a power transformer includes a sleeve, a base plate and a positioning shaft; the sleeve can be directly connected to an electric wrench; the base plate is made of high-strength steel plate, and the deformation is small during use; the size of the positioning pin is closely matched with the fixing wire plate.

[0045] This solution is a magnetic shielding installation device, which consists of a sleeve, a base plate and a positioning pin. The upper part of the device is connected to a socket wrench, and the lower part of the device is connected to a fixed wire plate. An electric wrench is used to quickly tighten the fixed wire plate.

[0046] The beneficial effects of the utility model are: simple structure, low cost, stable effect and high installation efficiency.

[0047] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0048] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A magnetic shielding installation device for a power transformer, characterized in that: include: A connecting shaft (11) and a positioning shaft (13); The first end of the connecting shaft (11) is fixed to the first end of the positioning shaft (13); The second end of the connecting shaft (11) is used for snap-fitting with the wrench (40), and the second end of the positioning shaft (13) is used for snap-fitting with the fixing wire plate (20).

2. The magnetic shielding installation device for a power transformer according to claim 1, characterized in that: Also includes: A bottom plate (12); the first end of the connecting shaft (11) is fixed to the first end of the positioning shaft (13) through the bottom plate (12).

3. The magnetic shielding installation device for a power transformer according to claim 2, characterized in that: The connecting shaft (11) is a sleeve, a first end of the sleeve is fixed to the base plate (12), and a second end of the sleeve is provided with a first clamping portion (14) matching the clamping end (41) of the wrench (40).

4. The magnetic shielding installation device for a power transformer according to claim 2, characterized in that: The second end of the positioning shaft (13) is provided with a second clamping portion (15) that matches the shape of the positioning hole (21) of the fixed wire plate (20).

5. The magnetic shielding installation device for a power transformer according to claim 3, characterized in that: The first clamping portion (14) is rectangular, and the first clamping portion (14) is a recessed portion.

6. The magnetic shielding installation device for a power transformer according to claim 4, characterized in that: The second clamping portion (15) is circular, and the second clamping portion (15) is a convex portion.

7. The magnetic shielding installation device for a power transformer according to claim 2, characterized in that: There are multiple positioning shafts (13), the first ends of the multiple positioning shafts (13) are all arranged on the bottom plate (12), and the position distribution of the multiple positioning shafts (13) corresponds one-to-one to the position distribution of the positioning holes (21) of the fixed wire plate (20).

8. The magnetic shielding installation device for a power transformer according to claim 2, characterized in that: The projection of the geometric center of the connecting shaft (11) in the vertical direction coincides with the projection of the geometric center of the bottom plate (12) in the vertical direction.

9. The magnetic shielding installation device for a power transformer according to claim 2, characterized in that: The connecting shaft (11) is detachable from the bottom plate (12), and / or The positioning shaft (13) is detachable from the bottom plate (12).

10. The magnetic shielding installation device for a power transformer according to claim 1, characterized in that: The positioning shaft (13) is a positioning pin.

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