Light test transformer

Abstract

The utility model relates to a light testing transformer which comprises a main body piece and a sealing piece. The main body piece comprises a transformer main body and a high-voltage bushing, the transformer main body is provided with a wiring end face, the wiring end face is provided with a wiring port, and one end of the high-voltage bushing is mounted on the wiring end face; the sealing element comprises an insulating sleeve and a baffle, the insulating sleeve is arranged on the high-voltage bushing in a sleeving mode and can rotate in the axial direction of the high-voltage bushing, the baffle is connected to the side, close to the wiring end face, of the insulating sleeve, provided with an avoiding opening and pressed against the wiring end face, and the baffle can shield the wiring port in the process of rotating along with the insulating sleeve. And the avoiding opening can be communicated with the wiring port. According to the scheme, external dust or water can be prevented from accidentally entering the wiring port, the sealing performance of the wiring port is ensured, the safety performance is improved, the structure is compact, and the device size is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a light test transformer. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are the primary coil, secondary coil, and iron core (magnetic core). Its main functions include: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), etc.

[0003] Patent CN 216054124 U discloses a highly safe lightweight high-voltage test transformer, the inner side of which adopts an embedded design structure to prevent human contact with the interface, and when discharge occurs at the interface, the metal arc cone can use the principle of tip discharge to guide the current to the internal grounding structure, thus avoiding the current from running wild. However, due to the embedded structure of the input terminal, dust and water are easily accumulated in the terminal hole, and it is not easy to clean, which has an adverse effect on the transformer. Utility Model Content

[0004] In view of this, it is necessary to provide a lightweight test transformer to solve the technical problem in the prior art that due to the embedded structure of the input terminal, dust and water are easily accumulated in the terminal hole, and it is not easy to clean, which has an adverse effect on the transformer.

[0005] The utility model provides a light test transformer, which comprises:

[0006] The main body comprises a transformer body and a high-voltage bushing, wherein the transformer body has a wiring end surface, the wiring end surface is provided with a wiring port, and one end of the high-voltage bushing is mounted on the wiring end surface; and

[0007] The sealing member comprises an insulating sleeve and a baffle, wherein the insulating sleeve is sleeved on the high-voltage bushing and can rotate around its axial direction, the baffle is connected to a side of the insulating sleeve close to the wiring end face, is provided with a avoidance opening, and is pressed against the wiring end face, and the baffle can shield the wiring port while rotating with the insulating sleeve and can connect the avoidance opening to the wiring port.

[0008] Optionally, the wiring port is provided in plurality, and the plurality of wiring ports are arranged at intervals around the circumference of the insulating sleeve;

[0009] The avoidance openings are provided in plurality corresponding to the wiring ports.

[0010] Optionally, a limiting arc groove is provided on the wiring end surface extending along the circumferential direction of the insulating sleeve, and a limiting column is protruded from the baffle plate corresponding to the limiting arc groove, and the limiting column is inserted into the limiting arc groove.

[0011] Optionally, the transformer body comprises a wiring seat and a main body seat, and the wiring seat is detachably mounted on the main body seat;

[0012] The wiring port is formed on the wiring seat, the main body seat is used to install components, and one end of the high-voltage bushing is installed on the main body seat and is located on the same side of the main body seat as the wiring seat.

[0013] Optionally, the main body seat is provided with a threaded hole, and the outer wall of the wiring seat is provided with an external thread corresponding to the threaded hole, so that the wiring seat can be detachably mounted on the main body seat.

[0014] Optionally, a side of the main body seat on which the high-voltage bushing is mounted is provided with a recessed groove, the recessed groove extends along the circumference of the insulating sleeve, and the threaded hole is formed at the bottom of the recessed groove;

[0015] When the terminal block is screwed into the threaded hole, one end close to the high-voltage bushing protrudes out of the threaded hole and is located in the sink.

[0016] Optionally, a sealing plug is installed on one side of the baffle plate close to the wiring seat, and the sealing plug can block the wiring port when the baffle plate is rotated to cover the wiring port.

[0017] Optionally, the escape opening is provided with two groups of sealing rubber sheets, and the two groups of sealing rubber sheets are respectively connected to two opposite side walls of the escape opening.

[0018] Optionally, an anti-slip groove is provided on the outer wall of the insulating sleeve.

[0019] Optionally, handles are provided on both sides of the transformer body, and / or a plurality of rollers are provided on the bottom of the transformer body.

[0020] Compared with the prior art, in the light test transformer provided by the utility model, when in use, the insulating sleeve is rotated to drive the baffle to rotate with the insulating sleeve to a position where the avoidance port is connected to the wiring port, so that the external wiring head can be plugged into the wiring port from the avoidance port; and after use, the insulating sleeve is driven again to rotate the baffle to a position to shield the wiring port, so that the wiring port is separated from the outside world, avoiding external dust or water from accidentally entering the wiring port, and improving the sealing performance of the wiring port; at the same time, even if a sudden discharge occurs at the wiring port, the insulating sleeve can avoid the discharge from piercing the high-voltage bushing, thereby improving the safety performance, and the structure is compact and the structural volume is reduced.

[0021] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the preferred embodiment of the utility model is described in detail as follows with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0023] Figure 1 A structural schematic diagram of an embodiment of a light test transformer provided by the utility model;

[0024] Figure 2 for Figure 1 The structural diagram of the transformer body;

[0025] Figure 3 for Figure 2 Exploded view of the transformer body;

[0026] Figure 4 for Figure 1 Schematic diagram of the structure of the middle seal;

[0027] Figure 5 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0028] Figure 6 for Figure 4 A schematic diagram of the structure of the middle insulating sleeve and baffle;

[0029] Figure 7 for Figure 4 A magnified schematic diagram of point B in the middle.

[0030] Description of reference numerals:

[0031] 100. Light test transformer; 1. Transformer body; 11. Wiring end face; 11a. Wiring port; 11b. Limiting arc groove; 12. Wiring seat; 13. Main body seat; 13a. Threaded hole; 13b. Countersunk groove; 2. High-voltage bushing; 3. Insulating sleeve; 4. Baffle; 4a. Avoidance; 41. Limiting column; 42. Sealing plug; 43. Sealing rubber sheet; 5. Handle; 6. Roller. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0033] See also Figures 1 to 7 The light test transformer 100 includes a main body and a sealing member; the main body includes a transformer body 1 and a high-voltage bushing 2, the transformer body 1 has a wiring end face 11, the wiring end face 11 is provided with a wiring port 11a, and one end of the high-voltage bushing 2 is installed on the wiring end face 11; the sealing member includes an insulating sleeve 3 and a baffle 4, the insulating sleeve 3 is sleeved on the high-voltage bushing 2 and can rotate around its axial direction, the baffle 4 is connected to a side of the insulating sleeve 3 close to the wiring end face 11, and is provided with an avoidance port 4a, and is pressed against the wiring end face 11, the baffle 4 can cover the wiring port 11a in the process of following the rotation of the insulating sleeve 3, and can make the avoidance port 4a connected to the wiring port 11a.

[0034] In the light test transformer 100 provided by the utility model, when in use, the insulating sleeve 3 is rotated to drive the baffle 4 to follow the insulating sleeve 3 to rotate to the position where the avoidance port 4a is connected to the wiring port 11a, so that the external wiring head can be plugged into the wiring port 11a from the avoidance port 4a; and after use, the insulating sleeve 3 is driven again to make the baffle 4 rotate to the position of shielding the wiring port 11a, so that the wiring port 11a is separated from the outside world, and external dust or water is prevented from accidentally entering the wiring port 11a, thereby improving the sealing performance of the wiring port 11a; at the same time, even if a sudden discharge occurs at the wiring port 11a, the insulating sleeve 3 can prevent the discharge from breaking through the high-voltage bushing 2, thereby improving the safety performance, and the structure is compact and the structural volume is reduced. It should be noted that the transformer body 1 is provided with a receiving cavity for accommodating components.

[0035] Further, there are multiple wiring ports 11a, which are arranged at intervals around the circumference of the insulating sleeve 3; there are multiple avoidance openings 4a corresponding to the wiring ports 11a. In this embodiment, there are multiple wiring ports 11a, and correspondingly, there are multiple avoidance openings 4a corresponding to the wiring ports 11a, and each avoidance opening 4a can be connected to the corresponding wiring port 11a during the rotation of the baffle 4.

[0036] Furthermore, the wiring end face 11 is provided with a limiting arc groove 11b extending along the circumferential direction of the insulating sleeve 3, and the baffle 4 is provided with a limiting column 41 corresponding to the limiting arc groove 11b, and the limiting column 41 is inserted into the limiting arc groove 11b. It should be understood that the limiting arc groove 11b is blocked at both ends in its extension direction. In this way, when the limiting column 41 slides to one end of the limiting arc groove 11b, it can be stopped by the side wall of the limiting arc groove 11b, and the baffle 4 is in a position to block the wiring port 11a; and when the limiting column 41 slides to the other end of the limiting arc groove 11b, it can be stopped by the other side wall opposite to the limiting arc groove 11b, and the baffle 4 is in a position where each avoidance 4a is connected to the corresponding wiring port 11a. In this way, the user is reminded of the rotation position of the baffle 4 to improve convenience.

[0037] Furthermore, the transformer body 1 includes a terminal block 12 and a main body block 13, wherein the terminal block 12 is detachably mounted on the main body block 13; wherein the terminal port 11a is formed on the terminal block 12, the main body block 13 is used to install components, and one end of the high-voltage bushing 2 is mounted on the main body block 13, and is located on the same side of the main body block 13 as the terminal block 12. It should be noted that after the external terminal head is frequently plugged into the terminal port 11a, it is easy to cause the inner wall of the terminal port 11a to wear, thereby affecting the electrical connection between the terminal head and the components. In this solution, the terminal block 12 is detachably connected to the main body block 13, so that it can be replaced after the inner wall of the terminal port 11a is worn.

[0038] Furthermore, the main body 13 is provided with a threaded hole 13a, and the outer wall of the wiring seat 12 is provided with an external thread corresponding to the threaded hole 13a, so that the wiring seat 12 can be detachably installed on the main body 13. In this solution, the wiring seat 12 is screwed to the threaded hole 13a of the main body 13, which is easy and convenient to install, has a simple structure, and saves costs.

[0039] Specifically, a recessed groove 13b is provided on one side of the main body seat 13 where the high-voltage bushing 2 is installed. The recessed groove 13b extends along the circumference of the insulating sleeve 3, and the threaded hole 13a is formed at the bottom of the recessed groove 13b; when the terminal block 12 is screwed into the threaded hole 13a, the end close to the high-voltage bushing 2 extends out of the threaded hole 13a and is located in the recessed groove 13b. In this embodiment, the recessed groove 13b is arranged in an annular shape, and the end of the terminal block 12 extends from the threaded hole 13a into the recessed groove 13b, which is convenient for the operator to clamp the end of the terminal block 12 for replacement, thereby improving convenience.

[0040] Specifically, a sealing plug 42 is installed on one side of the baffle 4 close to the wiring seat 12, and the sealing plug 42 can block the wiring port 11a when the baffle 4 rotates to block the wiring port 11a. In this way, when the baffle 4 rotates to a position to block the wiring port 11a, the sealing plug 42 can just block the wiring port 11a, preventing dust from entering the wiring port 11a from the sinking groove 13b, thereby improving the sealing performance. It should be noted that the sum of the lengths of the sealing plug 42 and the portion of the wiring seat 12 extending into the sinking groove 13b is slightly greater than the depth of the sinking groove 13b, and the sealing plug 42 is made of a flexible material. In this solution, the sealing groove is made of rubber.

[0041] Furthermore, the escape opening 4a is provided with two sets of sealing rubber sheets 43, and the two sets of sealing rubber sheets 43 are respectively connected to the two opposite side walls of the escape opening 4a. In this way, the sealing rubber sheets 43 are in an extended state in a natural state, and can cover the escape opening 4a to prevent foreign objects from entering the sink 13b from the escape opening 4a; and when the device needs to be used, the external wiring head can squeeze the sealing rubber sheets 43 to enter the corresponding wiring port 11a from the escape opening 4a to ensure the sealing performance.

[0042] Furthermore, an anti-skid groove is provided on the outer wall of the insulating sleeve 3. In this embodiment, an anti-skid groove is provided on the outside of the insulating sleeve 3 to facilitate the operator to rotate the insulating sleeve 3. In addition, handles 5 are provided on both sides of the transformer body 1, and / or a plurality of rollers 6 are provided at the bottom of the transformer body 1 to facilitate the operator to move the device and improve convenience.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A light test transformer, characterized in that: It includes: The main body comprises a transformer body and a high-voltage bushing, wherein the transformer body has a wiring end surface, the wiring end surface is provided with a wiring port, and one end of the high-voltage bushing is mounted on the wiring end surface; and The sealing member comprises an insulating sleeve and a baffle, wherein the insulating sleeve is sleeved on the high-voltage bushing and can rotate around its axial direction, the baffle is connected to a side of the insulating sleeve close to the wiring end face, is provided with a avoidance opening, and is pressed against the wiring end face, and the baffle can shield the wiring port while rotating with the insulating sleeve and can connect the avoidance opening to the wiring port.

2. The light test transformer according to claim 1, characterized in that: There are a plurality of wiring ports, and the plurality of wiring ports are arranged at intervals around the circumference of the insulating sleeve; The avoidance openings are provided in plurality corresponding to the wiring ports.

3. The light test transformer according to claim 2, characterized in that: The wiring end surface is provided with a limiting arc groove extending along the circumference of the insulating sleeve, and the baffle is provided with a limiting column protruding corresponding to the limiting arc groove, and the limiting column is inserted in the limiting arc groove.

4. The light test transformer according to claim 1, characterized in that: The transformer body comprises a wiring seat and a main body seat, and the wiring seat is detachably mounted on the main body seat; The wiring port is formed on the wiring seat, the main body seat is used to install components, and one end of the high-voltage bushing is installed on the main body seat and is located on the same side of the main body seat as the wiring seat.

5. The light test transformer according to claim 4, characterized in that: The main body seat is provided with a threaded hole, and the outer wall of the wiring seat is provided with an external thread corresponding to the threaded hole, so that the wiring seat can be detachably installed on the main body seat.

6. The light test transformer according to claim 5, characterized in that: A groove is provided on one side of the main body seat where the high voltage bushing is mounted, the groove extends along the circumference of the insulating sleeve, and the threaded hole is formed at the bottom of the groove; When the terminal block is screwed into the threaded hole, one end close to the high-voltage bushing protrudes out of the threaded hole and is located in the sink.

7. The light test transformer according to claim 6, characterized in that: A sealing plug is installed on one side of the baffle plate close to the wiring seat, and the sealing plug can block the wiring port when the baffle plate is rotated to cover the wiring port.

8. The light test transformer according to claim 6, characterized in that: The escape opening is provided with two groups of sealing rubber sheets, and the two groups of sealing rubber sheets are respectively connected to the two opposite side walls of the escape opening.

9. The light test transformer according to claim 1, characterized in that: The outer wall of the insulating sleeve is provided with an anti-slip groove.

10. The light test transformer according to claim 1, characterized in that: Handles are provided on both sides of the transformer body, and / or a plurality of rollers are provided on the bottom of the transformer body.

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