CN220420415U

CN220420415U - Test transformer earthing device

Info

Publication number: CN220420415U
Application number: CN202321726896.2U
Authority: CN
Inventors: 马玉娟; 颜超; 李振涛; 潘巍; 赵守国; 杨宇; 杨永鑫; 李友前; 耿兵; 邱文豪
Original assignee: Shandong Taikai Testing Co ltd
Current assignee: Shandong Taikai Testing Co ltd
Priority date: 2023-07-03
Filing date: 2023-07-03
Publication date: 2024-01-30
Anticipated expiration: 2033-07-03

Abstract

A grounding device of a test transformer relates to the technical field of standard test transformers, and the technical scheme is as follows: including transition box and transformer casing, be provided with the equalizing ring on the transition box, the lower surface of equalizing ring is provided with the conducting block, is provided with the conducting rod on the surface lateral wall of transition box, and the conducting rod corresponds the setting with the conducting block, is provided with adjusting part on the transition box, and adjusting part control conducting rod reciprocates, and the conducting rod can be connected with the transformer casing through coupling assembling. The beneficial effects of this technical scheme are: through the cooperation between conducting block, conducting rod and the adjusting part, when releasing residual voltage, adjust the position of conducting rod, make conducting rod and conducting block be connected, realize automatic safety discharge to conducting rod and conducting block are in connected state always, can guarantee that the equalizer ring thoroughly releases residual voltage, make things convenient for the normal use in later stage.

Description

Test transformer earthing device

Technical Field

The utility model relates to the technical field of standard test transformers, in particular to a test transformer grounding device.

Background

The standard test transformer is high-voltage equipment applied to the power industry, and mainly outputs normal working voltage to high voltage to perform a calibration test for the test transformer. The standard test transformer is used for calibration test, and after the working power supply is stopped, the standard test transformer is theoretically free of voltage. In practice, however, the grading ring on top of the standard test transformer will have a residual voltage.

The grading ring at transition box top can pass through the sleeve pipe of below at the stage of placing, rethread transition box or transformer carry residual voltage to ground, but release voltage through the sleeve pipe is slower, if need remove test transformer or when artificial contact transformer after the test, grading ring residual voltage can threaten staff's safety, so under the general circumstances, need the experimenter to take the insulator spindle with the cable conductor pick up, artificial with cable conductor and earth connection, realize releasing standard test transformer residual voltage to avoid taking place the accident.

But in this in-process personnel take the insulator spindle with the cable and pick up the in-process, at first the cable is flexible material inconvenient control, and the staff is possible to contact with the cable, produces threat to staff's safety to for personnel's safety, after the cable ground connection, in order to guarantee safety, the staff generally can keep away from the cable, can not confirm like this whether the cable is in the ground connection state always, can not ensure that the equalizer ring thoroughly releases residual voltage.

Disclosure of Invention

The utility model aims to overcome the defect that residual voltage on a grading ring cannot be thoroughly released when residual voltage is released by a worker at present.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a test transformer earthing device, includes transition box and transformer casing, is provided with the equalizer ring on the transition box, and the lower surface of equalizer ring is provided with the conducting block, is provided with the conducting rod on the surface lateral wall of transition box, and the conducting rod corresponds the setting with the conducting block, is provided with adjusting part on the transition box, and adjusting part accuse conducting rod reciprocates, and the conducting rod can be connected with transformer casing through coupling assembling.

The voltage on the equalizing ring is directly conveyed to the transition box body and the transformer shell through the conductive block and the conductive rod, so that the voltage on the equalizing ring is released rapidly.

Preferably, the connecting assembly comprises a connecting plate, a transition plate is arranged on the lower surface of the transition box body, the lower end of the connecting plate is connected with the transition plate, the connecting plate is connected with the conducting rod through a bolt, and the connecting plate is fixed on the transformer shell through a connecting frame.

The conducting rod can respectively convey the voltage to the transition box body and the transformer shell, and then convey the voltage to the ground.

Preferably, the adjusting component comprises an electric push rod arranged on the transition box body, the electric push rod comprises a fixed rod, the fixed rod is connected with the connecting plate, a telescopic rod is connected in the fixed rod in a sliding manner, the telescopic rod is correspondingly arranged with the electric block, and the electric push rod is connected with the lower end of the telescopic rod.

The electric push rod controls the telescopic rod to move, and controls according to whether the electric conduction on the equalizing ring needs to be released.

Preferably, the lower surfaces of the transition box body and the transformer shell are both provided with supporting seats, and the electric push rod is connected to the supporting seats.

Preferably, the upper surface of the transition box body is connected with a sleeve, and the upper end of the sleeve is connected with the lower surface of the equalizing ring.

When the transformer shell is not used immediately after the test, the voltage on the equalizing ring is downwards transmitted through the sleeve and is slowly transmitted to the transition box body and the transformer shell.

Preferably, the conductive rod, the connecting plate and the connecting frame are all made of conductive metal materials.

The conductive metal material is convenient for residual voltage to be transmitted to the ground.

Compared with the prior art, the utility model has the beneficial effects that: through the cooperation between conducting block, conducting rod and the adjusting part, when releasing residual voltage, adjust the position of conducting rod, make conducting rod and conducting block be connected, realize automatic safety discharge to conducting rod and conducting block are in connected state always, can guarantee that the equalizer ring thoroughly releases residual voltage, make things convenient for the normal use in later stage.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a side view of an embodiment of the present utility model.

Fig. 2 is a front view of an embodiment of the present utility model.

In the figure: 1 equalizing ring, 2 sleeve pipes, 3 transition box bodies, 4 electric push rods, 5 conductive blocks, 6 conductive rods, 7 transformer shells, 8 supporting seats, 9 connecting frames, 10 connecting plates, 11 transition plates, 601 telescopic rods and 602 fixed rods.

Detailed Description

In order to make the objects, features and advantages of the present utility model more obvious and understandable, the technical solutions of the present utility model will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the utility model are intended to be within the scope of the patent protection.

Referring to fig. 1-2, a test transformer grounding device, including transition box 3 and transformer casing 7, be provided with equalizing ring 1 on the transition box 3, the upper surface of transition box 3 is connected with sleeve pipe 2, when the test is accomplished, when not immediately using, transformer casing 7, the voltage on the equalizing ring 1 passes through sleeve pipe 2 and transmits downwards, slowly transmit to on transition box 3 and the transformer casing 7, the upper end of sleeve pipe 2 is connected at equalizing ring 1's lower surface, equalizing ring 1's lower surface is provided with conducting block 5, be provided with conducting rod 6 on the surface lateral wall of transition box 3, conducting rod 6 corresponds with conducting block 5 and sets up, voltage on the equalizing ring 1 is directly carried on transition box 3 and transformer casing 7 through conducting block 5 and conducting rod 6, thereby release the voltage on the equalizing ring 1 fast, conducting rod 6, connecting plate 10 and link 9 are conductive metal material, be provided with adjusting part on the transition box 3, adjusting part controls conducting rod 6 and reciprocates, conducting rod 6 can be connected with transformer casing 7 through coupling assembling, or when not conducting rod 6 is connected with conducting rod 5 normally in the test.

Referring to fig. 1-2, the connection assembly includes a connection plate 10, a transition plate 11 is provided on the lower surface of the transition case 3, the lower end of the connection plate 10 is connected with the transition plate 11, the connection plate 10 is connected with the conductive rod 6 through bolts, voltage is transmitted to the transition plate 11 and the connection frame 9 through the connection plate 10, the connection plate 10 is fixed on the transformer case 7 through the connection frame 9, the conductive rod 6 is fixed on the connection frame 9, and thus the conductive rod 6 can transmit the voltage to the transition case 3 and the transformer case 7 respectively.

Referring to fig. 1-2, the adjusting component comprises an electric push rod 4 arranged on a transition box body 3, a conductive rod 6 comprises a fixed rod 602, the fixed rod 602 is connected with a connecting plate 10, a telescopic rod 601 is slidably connected in the fixed rod 602, the telescopic rod 601 is convenient to move up and down, the telescopic rod 601 corresponds to a conductive block 5, when voltage on an equalizing ring 1 needs to be released, the electric push rod 4 pushes the telescopic rod 601 to move upwards, the telescopic rod 601 is connected with the conductive block 5, the voltage on the equalizing ring 1 is correspondingly arranged through the conductive block 5, the electric push rod 4 is connected with the lower end of the telescopic rod 601, the voltage on the equalizing ring 1 is conveyed to the telescopic rod 601 through the conductive block 5, the telescopic rod 601 conveys the voltage to the fixed rod 602, the voltage is conveyed to the transition box body 3 and a transformer shell 7 through the connecting plate 10, and then the voltage is conveyed to the ground through a supporting seat 8.

When the test is used, after the test is finished, the working power supply is cut off, the electric push rod 4 is controlled, the electric push rod 4 controls the telescopic rod 601 on the conducting rod 6 to move, the upper end of the telescopic rod 601 is connected with the conducting block 5 below the equalizing ring 1, and as the whole conducting rod 6, the connecting plate 10 and the connecting frame 9 are made of conducting metal, voltage can be transmitted to the transition box body 3 and the transformer shell 7, and residual voltage at the top end of the equalizing ring 1 is released.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a test transformer earthing device, includes transition box (3) and transformer casing (7), its characterized in that: be provided with equalizing ring (1) on transition box (3), the lower surface of equalizing ring (1) is provided with conducting block (5), is provided with conducting rod (6) on the surface lateral wall of transition box (3), and conducting rod (6) correspond setting with conducting block (5), are provided with adjusting part on transition box (3), and adjusting part controls conducting rod (6) and reciprocates, and conducting rod (6) can be connected with transformer casing (7) through coupling assembling.

2. The test transformer grounding apparatus of claim 1, wherein: the connecting assembly comprises a connecting plate (10), a transition plate (11) is arranged on the lower surface of the transition box body (3), the lower end of the connecting plate (10) is connected with the transition plate (11), the connecting plate (10) is connected with the conducting rod (6) through a bolt, and the connecting plate (10) is fixed on the transformer shell (7) through a connecting frame (9).

3. The test transformer grounding apparatus of claim 1, wherein: the adjusting component comprises an electric push rod (4) arranged on the transition box body (3), the electric push rod (6) comprises a fixed rod (602), the fixed rod (602) is connected with the connecting plate (10), the telescopic rod (601) is connected in a sliding manner in the fixed rod (602), the telescopic rod (601) is correspondingly arranged with the electric block (5), and the electric push rod (4) is connected with the lower end of the telescopic rod (601).

4. A test transformer grounding apparatus as defined in claim 3, wherein: the lower surfaces of the transition box body (3) and the transformer shell (7) are respectively provided with a supporting seat (8), and the electric push rod (4) is connected to the supporting seats (8).

5. The test transformer grounding apparatus of claim 1, wherein: the upper surface of transition box (3) is connected with sleeve pipe (2), and the lower surface at equalizer ring (1) is connected to the upper end of sleeve pipe (2).

6. The test transformer grounding apparatus of claim 2, wherein: the conducting rod (6), the connecting plate (10) and the connecting frame (9) are all made of conducting metal materials.