Auxiliary device for grounding transformer iron core and clamp

Abstract

The invention provides an auxiliary device for grounding of a transformer iron core and a clamping piece, which comprises a binding post, one end of the binding post is connected to an iron core clamping piece of a transformer, and the other end of the binding post is connected with a grounding wire; a shell is arranged on the outer side of the binding post, the shell is fixed on the transformer, and the shell wraps the binding post and the grounding wire; a plurality of through holes are formed in the outer part of the shell, and the ground wires can extend outwards through the through holes. The grounding wire extends outwards through the through hole, when grounding is needed, the grounding wire is used for grounding, and the effect that an operator can conduct grounding operation conveniently can be achieved; and when the grounding operation is not needed, the grounding wire is wound in the storage groove, so that the storage of the grounding wire can be realized.

Description

Technical Field

[0001] The invention relates to the technical field of transformer grounding, and in particular to an auxiliary device for grounding a transformer core and a clamp. Background Art

[0002] When the core and clamps of an oil-immersed transformer have multiple grounding faults, the core and clamp grounding current will increase. Regularly measuring the grounding current can detect faults in a timely manner. At present, the core and clamp grounding lead-out terminals of some operating transformers are grounded through short-circuit pieces, and it is impossible to use a clamp ammeter to test the core and clamp grounding current during operation. Summary of the invention

[0003] The purpose of the present invention is to propose an auxiliary device for grounding the transformer core and clamps, how to replace the original short-circuit with a grounding wire, and extend the grounding wire outward through the auxiliary device to ground it, so as to facilitate the measurement operator to perform the grounding current measurement operation.

[0004] In one aspect, an auxiliary device for grounding a transformer core and a clamp is provided, comprising:

[0005] A terminal, one end of which is connected to the iron core clip of the transformer, and the other end of which is connected to the ground wire;

[0006] A shell is arranged outside the terminal, the shell is fixed on the transformer, and the shell wraps the terminal and the grounding wire; a plurality of through holes are arranged outside the shell, and the through holes allow the grounding wire to extend outward.

[0007] Preferably, an observation window is arranged on the outer side of the shell, and the observation window is sealed and connected to the shell via a sealing gasket.

[0008] Preferably, a plurality of pressing blocks are arranged on the outer edge of the observation window, and the pressing blocks are embedded between the observation window and the inner wall of the shell to fix the observation window.

[0009] Preferably, a mounting sleeve is arranged inside the outer shell, and the mounting sleeve is connected to the outer shell via threads.

[0010] Preferably, a plurality of fixing holes are provided on the outer edge of the mounting sleeve, and the fixing holes are connected to the transformer via bolts.

[0011] Preferably, a receiving groove is further provided on the outer shell, and the receiving groove is provided between the outer shell and the mounting sleeve for receiving the grounding wire.

[0012] In summary, the implementation of the embodiments of the present invention has the following beneficial effects:

[0013] The auxiliary device for grounding the transformer core and the clamp provided by the present invention extends the grounding wire outward through the through hole. When grounding is required, the grounding wire can be used for grounding, which can facilitate the operator to perform the grounding operation. When the grounding operation is not required, the grounding wire can be stored by winding it in the storage groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention 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 present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the present invention.

[0015] Figure 1 The figure is a schematic diagram of an auxiliary device for grounding a transformer core and a clamp in an embodiment of the present invention.

[0016] Figure 2 The figure is a schematic diagram of an auxiliary device for grounding a transformer core and a clamp in an embodiment of the present invention.

[0017] Figure 3 The figure is a schematic diagram of an auxiliary device for grounding a transformer core and a clamp in an embodiment of the present invention. DETAILED DESCRIPTION

[0018] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0019] like Figures 1 to 3 FIG. 1 is a schematic diagram of an embodiment of an auxiliary device for grounding a transformer core and a clamp provided by the present invention. In this embodiment, the device comprises:

[0020] A terminal 2, one end of which is connected to the core clip of the transformer 1, and the other end of which is connected to the grounding wire 3; a shell 4 is arranged outside the terminal 2, the shell 4 is fixed on the transformer 1, and the shell 4 wraps the terminal 2 and the grounding wire 3; a plurality of through holes are arranged outside the shell 4, and the through holes can be used for the grounding wire 3 to extend outward. That is, the whole is applied to be installed on the equipment end, specifically including the terminal 2, the terminal 2 is electrically connected to the grounding wire 3; and the shell 4 is also included, and the shell 4 is fixed to the equipment end by bolts. Three through holes are arranged outside the shell 4, and the mobile grounding wire 3 extends outward and is connected to the ground grid. The shell 4 is fixedly connected to the threaded hole on the equipment end by bolts. It should be noted that this device is an additional component, and a cover body is sealed on the original equipment end by bolts. When installing this product, the cover body on the equipment end needs to be removed, and the threaded hole originally used for installing the cover body is used to install the shell 4 of this product. The end of the housing 4 is extended outward to be provided with a mounting edge for bolt installation, and the mounting edge is provided with a concave hole for the bolt to sink into and be fixed.

[0021] In a specific embodiment, an observation window 6 is provided on the outer side of the housing 4, and the observation window 6 is sealed and connected to the housing 4 through a sealing gasket 5. A plurality of pressing blocks 7 are provided on the outer edge of the observation window 6, and the pressing blocks 7 are embedded between the observation window 6 and the inner wall of the housing 4 to fix the observation window 6. That is, the housing 4 is provided with an observation window 6, and the observation window 6 is sealed and connected to the housing 4 through a sealing gasket 5, and a pressing block 7 for fixing is provided on the observation window 6.

[0022] In a specific embodiment, a mounting sleeve 8 is disposed inside the housing 4, and the mounting sleeve 8 is connected to the housing 4 via threads. A plurality of fixing holes 10 are disposed on the outer edge of the mounting sleeve 8, and the fixing holes 10 are connected to the transformer 1 via bolts. That is, because the overall structure size of the device end is not consistent, and at the same time, the setting of the threaded hole does not necessarily correspond to the recessed hole on the mounting edge of the shell 4, in order to optimize the installation flexibility of this product, the mounting edge is set to an adjustable structure, including a fixed connector 9 and a movable connector 9, wherein both the fixed connector 9 and the movable connector 9 are provided with recessed holes for bolts to be sunk for installation, the fixed connector 9 is fixedly connected to the shell, and the movable connector 9 is movably connected to the shell; a mounting sleeve 8 is rotatably connected to the outer edge of the shell 4, and the movable connector 9 is fixedly connected to the mounting sleeve 8. Therefore, when installing this shell 4, the operator can use the fixed connector 9 to fix the fixed connector 9 on the threaded hole at the device end with a bolt, and then rotate the mounting sleeve 8 to make the interactive connector 9 fixed to the mounting sleeve 8 correspond to another threaded hole, and then the interactive connector 9 can be installed and fixed on the threaded hole at the device end with a bolt, and the product can be fixedly installed on the device end as a whole by fixing the fixed connector 9 with the interactive connector 9.

[0023] In a specific embodiment, a receiving groove 11 is further provided on the housing 4, and the receiving groove 11 is provided between the housing 4 and the mounting sleeve 8, and is used to receive the grounding wire 3. In order to facilitate receiving the extended grounding wire 3, the receiving groove 11 is provided on the outer edge of the housing 4, and when the grounding operation is not required, the grounding wire 3 can be received by winding the grounding wire 3 in the receiving groove 11.

[0024] In summary, the implementation of the embodiments of the present invention has the following beneficial effects:

[0025] The auxiliary device for grounding the transformer core and the clamp provided by the present invention extends the grounding wire outward through the through hole. When grounding is required, the grounding wire can be used for grounding, which can facilitate the operator to perform the grounding operation. When the grounding operation is not required, the grounding wire can be stored by winding it in the storage groove.

[0026] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. An auxiliary device for grounding transformer core and clamps, characterized in that: include: A terminal, one end of which is connected to the iron core clip of the transformer, and the other end of which is connected to the ground wire; A shell is arranged outside the terminal, the shell is fixed on the transformer, and the shell wraps the terminal and the grounding wire; a plurality of through holes are arranged outside the shell, and the through holes allow the grounding wire to extend outward.

2. The grounding device according to claim 1, characterized in that: An observation window is arranged on the outer side of the shell, and the observation window is sealed and connected to the shell through a sealing gasket.

3. The grounding device according to claim 2, characterized in that: A plurality of pressing blocks are arranged on the outer edge of the observation window, and the pressing blocks are embedded between the observation window and the inner wall of the shell to fix the observation window.

4. The grounding device according to claim 3, characterized in that: A mounting sleeve is arranged inside the shell, and the mounting sleeve is connected to the shell through threads.

5. The grounding device according to claim 4, characterized in that: A plurality of fixing holes are arranged on the outer edge of the mounting sleeve, and the fixing holes are connected to the transformer through bolts.

6. The grounding device according to claim 5, characterized in that: The housing is also provided with a receiving groove, which is provided between the housing and the mounting sleeve and is used for receiving the grounding wire.

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