Auxiliary device for maintenance of transformer bushing

Abstract

The utility model relates to the technical field of transformers, in particular to an auxiliary device for maintenance of a transformer bushing, which comprises a stand column, the bottom of the stand column is fixedly connected with a detection mechanism sleeved on the outer side of a pressure relief bolt, the top of the stand column is fixedly connected with a pressure relief mechanism, and a controller is mounted in the pressure relief mechanism. The outer side of the controller is fixedly connected with a connecting line, and the other end of the connecting line is connected with the detection mechanism. When the device is used, the bolt rotating sleeve is directly sleeved on the outer side of the pressure relief bolt, the motor is started to drive the bolt rotating sleeve to rotate slowly, at the moment, the pressure relief bolt can be ensured to rotate, after the pressure relief bolt rotates to a proper position, air is exhausted and is exhausted through the ventilation pipeline, and at the moment, the air speed detector detects that air flows. Therefore, a signal is sent to the controller to control the motor to stop rotating, accurate rotating exhaust pressure relief of the pressure relief bolt is achieved, and the pressure relief bolt can be effectively prevented from being disengaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to transformer technical field, concretely is a kind of auxiliary device for the maintenance of transformer bushing. BACKGROUND

[0002] Transformer bushing is the main insulation device outside transformer box, the outgoing line of transformer winding must pass through insulation bushing, so that outgoing line between and outgoing line and transformer shell are insulated, while playing the role of fixing outgoing line.Due to voltage grade difference, insulation bushing has pure porcelain bushing, oil-filled bushing and capacitor bushing etc.Form.Pure porcelain bushing is used in 10kV and below transformer, it is in porcelain bushing and wears a conductive copper pole, porcelain inside is air insulation.Oil-filled bushing is used in 35kV level transformer, it is in porcelain bushing and fills oil, in porcelain bushing and wears a conductive copper pole, copper pole is wrapped with insulation paper.Capacitor bushing is composed of main insulation capacitor core, outer insulation upper and lower porcelain piece, connecting sleeve, oil pillow, spring assembly, base, voltage-sharing ball, measurement terminal, wiring terminal, rubber washer, insulation oil etc.

[0003] Transformer bushing needs to be vented and pressure-relieved inside during long-time use, and general pressure-relief mode is to rotate pressure-relief bolt by hand, when it is rotated to appropriate position, the exhaust hole in the pressure-relief bolt is exposed, at this time, normal exhaust work can be carried out, when exhaust is completed, part of oil will leak, and pressure-relief bolt needs to be reset in time, however, in actual operation, it is very difficult to rotate pressure-relief bolt accurately, and pressure-relief bolt is often rotated to separate, therefore, aiming at the above problems, an auxiliary device for the maintenance of transformer bushing is provided. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing an auxiliary device for the maintenance of transformer bushing to solve the problems in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] As an optional scheme of the auxiliary device for the maintenance of transformer bushing, the auxiliary device for the maintenance of transformer bushing includes stand,

[0007] The bottom of the stand is fixedly connected with detection mechanism for sleeving outside pressure-relief bolt, the top of the stand is fixedly connected with pressure-relief mechanism, the inside of the pressure-relief mechanism is installed with controller, and the outside of controller is fixedly connected with connecting line, and the other end of connecting line is connected with detection mechanism;

[0008] The pressure relief mechanism comprises a fixed frame, a moving frame and a motor, the bottom of the fixed frame is fixedly connected with the stand on both sides, the inside of the fixed frame is provided with the moving frame, the inside of the moving frame is fixedly connected with the motor, and the tail end of the main shaft of the motor is fixedly connected with a bolt rotating sleeve;

[0009] The inside of the fixed frame is also provided with a controller;

[0010] The inside of the moving frame is slidably connected with guide columns arranged on the left and right, and the top of the guide column is fixedly connected with the fixed frame.

[0011] The transformer bushing needs to be exhausted and pressure relieved in the long-time use process, and the general pressure relief mode is to rotate the pressure relief bolt by hand, when the pressure relief bolt is rotated to the appropriate position, the exhaust hole in the pressure relief bolt is exposed, at this time, normal exhaust work can be carried out, when the exhaust is completed, part of the oil will be leaked, and the pressure relief bolt needs to be reset in time, however, in the actual operation, it is very difficult to rotate the pressure relief bolt accurately, the bolt rotating sleeve is directly sleeved on the outside of the pressure relief bolt in the use of external power, the bolt rotating sleeve is slowly rotated by starting the motor, at this time, the accurate rotation of the pressure relief bolt can be ensured, when the pressure relief bolt is rotated to the appropriate position, the gas is discharged, and the gas is discharged through the air duct, at this time, the air speed detector detects that air flows, so as to send a signal to the controller for controlling the motor to stop rotating, the accurate rotation of the pressure relief bolt is realized, and the disengagement of the pressure relief bolt can be effectively avoided.

[0012] As an optional scheme of the auxiliary device for transformer bushing maintenance, the outside of the guide column is provided with a spring, the top of the spring is fixedly connected with the fixed frame, and the bottom of the spring is fixedly connected with the moving frame.

[0013] In the exhaust and pressure relief process, the motor drives the bolt rotating sleeve to rotate, and when the bolt rotating sleeve drives the pressure relief bolt to rotate, the motor can drive the moving frame to move upwards and press the spring, and the guide column plays a guiding role, and the moving frame is automatically reset after the pressure relief is completed, so that the next work is facilitated.

[0014] As an optional scheme of the auxiliary device for transformer bushing maintenance, the detection mechanism comprises a fixed ring, a sealing ring and a protective cover, the bottom of the fixed ring is fixedly connected with the sealing ring, the top of the fixed ring is fixedly connected with the stand, the inside of the fixed ring is fixedly connected with the protective cover, one side of the protective cover is fixedly connected with a mounting frame, the inside of the mounting frame is fixedly connected with the air duct, the outside of the air duct is provided with the air speed detector, and the inside bottom of the protective cover is fixedly connected with oil liquid sensors arranged in a symmetrical mode.

[0015] As an optional scheme of the auxiliary device for transformer bushing maintenance, the protective cover is made of transparent glass plate.

[0016] As an optional scheme of the auxiliary device for transformer bushing maintenance, the protective cover is made of transparent glass plate.

[0017] When the pressure relief bolt is rotated, the fixed ring and the protective cover cover around to form a relatively sealed state, at this time, once the exhaust condition occurs, the wind speed detector can timely monitor and stop rotating the pressure relief bolt, when the oil discharge condition occurs, the oil sensor timely monitors and controls the motor to reverse timely to reset the pressure relief bolt, realizing semi-automatic exhaust pressure relief work.

[0018] Compared with the prior art, the utility model has the advantages that:

[0019] In use, the bolt rotating sleeve is directly sleeved outside the pressure relief bolt, the motor is started to drive the bolt rotating sleeve to rotate slowly, at this time, the pressure relief bolt can be ensured to rotate, when the pressure relief bolt rotates to the appropriate position, the gas is discharged through the air duct, at this time, the wind speed detector detects air flow to send a signal to the controller for controlling the motor to stop rotating, realizing accurate rotation of the pressure relief bolt, which can effectively avoid the pressure relief bolt from being separated;

[0020] During the exhaust pressure relief process, the motor drives the bolt rotating sleeve to rotate, and when the bolt rotating sleeve drives the pressure relief bolt to rotate, the motor can drive the moving frame to move upwards and press the spring, and the guide column plays a guiding role, and when the pressure relief is completed, the moving frame is automatically reset, facilitating the next work.

[0021] When the pressure relief bolt is rotated, the fixed ring and the protective cover cover around to form a relatively sealed state, at this time, once the exhaust condition occurs, the wind speed detector can timely monitor and stop rotating the pressure relief bolt, when the oil discharge condition occurs, the oil sensor timely monitors and controls the motor to reverse timely to reset the pressure relief bolt, realizing semi-automatic exhaust pressure relief work. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the whole structure schematic view of the utility model;

[0023] Figure 2 It is the structure schematic view of the detection mechanism of the utility model;

[0024] Figure 3 It is the structure schematic view of the pressure relief mechanism of the utility model.

[0025] Fig. 1, column; 2, detection mechanism; 201, fixed ring; 202, sealing ring; 203, protective cover; 204, mounting frame; 205, ventilation pipeline; 206, wind speed detector; 207, oil sensor; 208, rubber ring; 3, pressure relief mechanism; 301, fixed frame; 302, moving frame; 303, motor; 304, bolt rotating sleeve; 305, guide column; 306, spring; 4, connecting line; 5, controller. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] Embodiment 1

[0028] Please refer to Figure 1 and Figure 3 The present application provides a technical solution:

[0029] An auxiliary device for maintaining a transformer bushing, comprising a column 1,

[0030] The bottom of the column 1 is fixedly connected with a detection mechanism 2 for sleeving outside the pressure relief bolt, the top of the column 1 is fixedly connected with a pressure relief mechanism 3, the inside of the pressure relief mechanism 3 is installed with a controller 5, and the outside of the controller 5 is fixedly connected with a connecting line 4, the other end of the connecting line 4 is connected with the detection mechanism 2;

[0031] The pressure relief mechanism 3 comprises a fixed frame 301, a moving frame 302 and a motor 303, the bottom of the fixed frame 301 is fixedly connected with the column 1 on both sides, the inside of the fixed frame 301 is provided with the moving frame 302, the inside of the moving frame 302 is fixedly connected with the motor 303, and the main shaft end of the motor 303 is fixedly connected with a bolt rotating sleeve 304;

[0032] The inside of the fixed frame 301 is also installed with a controller 5;

[0033] The inside of the moving frame 302 is slidingly connected with guide columns 305 arranged left and right, and the top of the guide columns 305 is fixedly connected with the fixed frame 301.

[0034] The transformer bushing needs to be exhausted and pressure-released inside during long time use, and the general pressure-releasing mode is to rotate the pressure-releasing bolt by hand, when it is rotated to the appropriate position, the exhaust hole in the pressure-releasing bolt is exposed, at this time, normal exhaust work can be carried out, when the exhaust is completed, part of the oil will be leaked, the pressure-releasing bolt needs to be reset in time, however, in actual operation, it is very difficult to rotate the pressure-releasing bolt accurately, the pressure-releasing bolt is often rotated to disengage, in use, the bolt rotating sleeve 304 is directly sleeved outside the pressure-releasing bolt, the bolt rotating sleeve 304 is slowly rotated by starting the motor 303, at this time, the pressure-releasing bolt can be rotated, when the pressure-releasing bolt is rotated to the appropriate position, the gas is discharged, and is discharged by the air duct 205, at this time, the air speed detector 206 detects that air flows, so as to send a signal to the controller 5 for controlling the motor 303 to stop rotating, realizing accurate rotation of the pressure-releasing bolt, which can effectively avoid the disengagement of the pressure-releasing bolt;

[0035] In the embodiment, in use, first, the detection mechanism 2 is sleeved outside the pressure-releasing bolt, and the bolt rotating sleeve 304 is sleeved outside the pressure-releasing bolt, the bottom of the bolt rotating sleeve 304 is concave, so as to cooperate with the bolt, and further stably drive the pressure-releasing bolt to rotate.

[0036] Embodiment 2

[0037] The embodiment is an improvement on embodiment 1, please refer to Figure 3 , specifically, the outer side of the guide column 305 is provided with the spring 306, the top of the spring 306 is fixedly connected with the fixed frame 301, and the bottom of the spring 306 is fixedly connected with the moving frame 302.

[0038] In the exhaust and pressure-releasing process, the motor 303 drives the bolt rotating sleeve 304 to rotate, and when the bolt rotating sleeve 304 drives the pressure-releasing bolt to rotate, the motor 303 can drive the moving frame 302 to move upwards and press the spring 306, and the guide column 305 plays a guiding role, when the pressure-releasing is completed, the moving frame 302 is automatically reset, which is convenient for next work;

[0039] In the embodiment, when the moving frame 302 slides downwards, the moving frame 302 is located above the through hole of the fixed frame 301 where the bolt rotating sleeve 304 is placed, and the moving frame 302 is larger than the through hole, so as to avoid the moving frame 302 from disengaging from the fixed frame 301.

[0040] Embodiment 3

[0041] The embodiment is an improvement on embodiment 2, please refer to Figure 2Specifically, the detection mechanism 2 comprises a fixing ring 201, a sealing ring 202 and a protective cover 203, the bottom of the fixing ring 201 is fixedly connected with the sealing ring 202, the top of the fixing ring 201 is fixedly connected with the stand column 1, the inner side of the fixing ring 201 is fixedly connected with the protective cover 203, one side of the protective cover 203 is fixedly connected with a mounting frame 204, the inside of the mounting frame 204 is fixedly connected with a ventilation pipeline 205, the outer side of the ventilation pipeline 205 is mounted with a wind speed detector 206, the inner bottom of the protective cover 203 is fixedly connected with symmetrically arranged oil liquid sensors 207.

[0042] The protective cover 203 is made of transparent glass plate.

[0043] The top of the protective cover 203 is further mounted with a rubber ring 208.

[0044] When the pressure relief bolt is rotated, the fixing ring 201 and the protective cover 203 cover around to form a relatively sealed state, at this time, the wind speed detector 206 can timely monitor and stop rotating the pressure relief bolt when exhaust occurs, and the oil liquid sensor 207 timely monitors and controls the motor 303 to reverse to reset the pressure relief bolt when oil discharge occurs, so as to realize semi-automatic exhaust and pressure relief work.

[0045] In use, the sealing ring 202 is tightly attached to the outer side of the pressure relief bolt to avoid poor sealing, and when the bolt rotating sleeve 304 extends into the inside of the protective cover 203, the bolt rotating sleeve 304 will be in close contact with the rubber ring 208 to avoid air leakage, and the wind speed detector 206 can detect wind during the exhaust process, which indicates that the exhaust has been completed, and the motor 303 stops rotating, and the protective cover 203 is made of transparent glass plate, which can facilitate the accurate sleeve of the bolt rotating sleeve 304 on the outer side of the pressure relief bolt, and in use, the wind speed detector 206 and the oil liquid sensor 207 are both products of the prior art, so their detailed structures will not be described in detail.

[0046] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0047] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for transformer bushing maintenance, characterized in that: it comprises a stand (1), a detection mechanism (2) for being sleeved outside the pressure relief bolt is fixedly connected to the bottom of the stand (1), a pressure relief mechanism (3) is fixedly connected to the top of the stand (1), a controller (5) is installed inside the pressure relief mechanism (3), and a connecting line (4) is fixedly connected to the outside of the controller (5), and the other end of the connecting line (4) is connected with the detection mechanism (2); the pressure relief mechanism (3) comprises a fixed frame (301), a moving frame (302) and a motor (303), both sides of the bottom of the fixed frame (301) are fixedly connected with the stand (1), the moving frame (302) is arranged inside the fixed frame (301), the motor (303) is fixedly connected inside the moving frame (302), and a bolt rotating sleeve (304) is fixedly connected to the main shaft end of the motor (303); the controller (5) is also installed inside the fixed frame (301); a left and right arranged guide column (305) is slidingly connected inside the moving frame (302), and the top of the guide column (305) is fixedly connected with the fixed frame (301).

2. An auxiliary device for transformer bushing maintenance according to claim 1, characterized in that: springs (306) are arranged outside the guide column (305), the top of the spring (306) is fixedly connected with the fixed frame (301), and the bottom of the spring (306) is fixedly connected with the moving frame (302).

3. An auxiliary device for transformer bushing maintenance according to claim 1, characterized in that: the detection mechanism (2) comprises a fixed ring (201), a sealing ring (202) and a protective cover (203), the sealing ring (202) is fixedly connected to the bottom of the fixed ring (201), the top of the fixed ring (201) is fixedly connected with the stand (1), the protective cover (203) is fixedly connected to the inner side of the fixed ring (201), one side of the protective cover (203) is fixedly connected with a mounting frame (204), the mounting frame (204) is fixedly connected with a ventilation pipeline (205) inside, a wind speed detector (206) is installed outside the ventilation pipeline (205), and symmetrically arranged oil liquid sensors (207) are fixedly connected to the inner bottom of the protective cover (203).

4. An auxiliary device for transformer bushing maintenance according to claim 3, characterized in that: the protective cover (203) is made of transparent glass plate.

5. An auxiliary device for transformer bushing maintenance according to claim 3, characterized in that: a rubber ring (208) is also installed at the top of the protective cover (203).

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