CN213957592U

CN213957592U - Power transformer residual magnetism measuring device

Info

Publication number: CN213957592U
Application number: CN202022787030.5U
Authority: CN
Inventors: 邱炳彬; 邱炳江
Original assignee: Guangdong Yi Neng Electric Power Co ltd
Current assignee: Guangdong Yi Neng Electric Power Co ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-08-13
Anticipated expiration: 2030-11-26

Abstract

The utility model discloses a power transformer remanence measuring device, including base, support column and measuring device body, the support column is rotated with the top of base and is connected, one side of support column is rotated through the pivot and is connected with the arc inserted bar, the top of base is encircleed and is equipped with a plurality of slots that correspond with the arc inserted bar, the bottom of support column is equipped with the cavity, the cavity internal rotation is connected with the screw rod, the fixed cover has connect first gear on the screw rod, be equipped with the second gear with first gear engaged with in the cavity, the inner wall of second gear and cavity passes through the bull stick and rotates and connect, the inner wall and the fixedly connected with knob of cavity are run through to the one end of bull stick, the one end of knob slides and inserts and is equipped with the kelly, it is equipped with a plurality of draw-in grooves that correspond with the kelly to encircle on the outer wall of support column. The utility model discloses in through many places adjustment mechanism's setting, make measuring device can carry out the freedom regulation to the installation effectiveness of device has been promoted.

Description

Power transformer residual magnetism measuring device

Technical Field

The utility model relates to a transformer demagnetization technical field especially relates to a power transformer remanence measuring device.

Background

The harm of residual magnetism is mainly shown in that a transformer core is rapidly highly saturated to generate larger exciting current at the moment of no-load impact switching-on of the transformer under rated voltage, the value of the normal steady-state exciting current (no-load current) of the transformer can reach 80 times to 100 times, which is equivalent to 6 times to 8 times of the rated current, and the large exciting current can cause false operation of protective devices such as overcurrent and heavy gas, so that the transformer fails to be put into operation; inducing false tripping due to 'sympathetic inrush current' generated by operating transformers in adjacent substations. Large area power failure is caused; generating an operation overvoltage to damage electrical equipment; causing the voltage and frequency of the power grid to fluctuate, and influencing the normal work of other electrical equipment; the exciting current contains a large amount of harmonic waves, which causes serious pollution to the quality of electric energy; make the magnetic leakage increase, arouse that metallic structure and oil tank are overheated: local overheating can also cause degradation of the insulation paper or breakdown of the transformer oil, affecting the life of the transformer. Therefore, the residual magnetism of the transformer core not only affects the operation safety of the transformer core, but also affects the stable and safe operation of the power system. For the above reasons. It is necessary to detect the residual magnetism after each DC resistance test of the transformer and take practical and effective measures to eliminate or reduce the residual magnetism of the iron core.

However, the external structure of the existing residual magnetism measuring device is simpler, and a certain mounting and adjusting mechanism is lacked outside the device, so that the mounting efficiency of the measuring device is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that remanence measuring device external structure is comparatively simple among the prior art, and the device outside lacks certain installation adjustment mechanism, and the power transformer remanence measuring device who provides.

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

a power transformer residual magnetism measuring device comprises a base, a supporting column and a measuring device body, wherein the supporting column is rotatably connected with the top of the base, an arc-shaped inserted rod is rotatably connected to one side of the supporting column through a rotating shaft, a plurality of inserting grooves corresponding to the arc-shaped inserted rod are formed in the top of the base in a surrounding mode, a cavity is formed in the bottom of the supporting column, a screw rod is rotatably connected in the cavity, a first gear is fixedly sleeved on the screw rod, a second gear meshed with the first gear is arranged in the cavity, the second gear is rotatably connected with the inner wall of the cavity through the rotating rod, one end of the rotating rod penetrates through the inner wall of the cavity and is fixedly connected with a knob, a clamping rod is inserted into one end of the knob in a sliding mode, a plurality of clamping grooves corresponding to the clamping rod are formed in the outer wall of the supporting column in a surrounding mode, a through hole is formed in the top of the supporting column, and the top of the screw rod penetrates through the inner wall of the cavity and extends towards the through hole, the supporting plate is sleeved at one end, extending by the screw, of the screw, one end of the supporting plate is fixedly connected with the outer wall of the measuring device body, the bottom of the supporting column is fixedly connected with the fixing block, and the supporting plate is connected with the fixing block through the telescopic rod.

Preferably, the bottom of base fixedly connected with a plurality of latch segments, be equipped with the latch port on the latch segment.

Preferably, the rotating shaft is sleeved with a torsion spring, and two ends of the torsion spring are respectively and fixedly connected with the arc-shaped inserted rod and the supporting column.

Preferably, a clamping sleeve is fixedly sleeved at one end, close to the support column, of the clamping rod, and a pull rod is fixedly connected at one end, far away from the clamping sleeve, of the clamping rod.

Preferably, the clamping rod is sleeved with a spring, and two ends of the spring are fixedly connected with the clamping sleeve and the knob respectively.

Preferably, the rotating rod is rotatably sleeved with a support sleeve, and one side of the support sleeve abuts against the inner wall of the cavity.

Has the advantages that:

1. the direction of the measuring device body is adjusted by rotating the supporting column, then the supporting column is fixed by the arc-shaped inserted rod, then the knob is rotated to drive the rotating rod to rotate, and simultaneously, the screw rod is driven to rotate by the meshing action between the first gear and the second gear, so that the height of the measuring device body is adjusted by the supporting plate, and then the knob is fixed by the clamping rod, the utility model discloses through the arrangement of a plurality of adjusting mechanisms, the measuring device can be freely adjusted, thereby the installation efficiency of the device is improved;

2. the setting of latch segment can conveniently be fixed the base, and torque spring can play certain torsion to the arc inserted bar and support, and the spring can play certain elastic support to the kelly, and the telescopic link can prevent rocking of backup pad.

Drawings

Fig. 1 is a schematic structural diagram of a power transformer residual magnetism measuring device provided by the present invention;

fig. 2 is a schematic structural view of a portion a of fig. 1.

In the figure: the device comprises a base 1, a support column 2, a measuring device body 3, a rotating shaft 4, an arc-shaped inserted rod 5, a screw 6, a first gear 7, a second gear 8, a rotating rod 9, a knob 10, a clamping rod 11, a support plate 12, a fixed block 13, a telescopic rod 14, a locking block 15, a clamping sleeve 16, a pull rod 17, a spring 18 and a support sleeve 19.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-2, a power transformer residual magnetism measuring device comprises a base 1, a support column 2 and a measuring device body 3, wherein the bottom of the base 1 is fixedly connected with a plurality of locking blocks 15, locking ports are formed in the locking blocks 15, the base 1 is convenient to fix, the support column 2 is rotatably connected with the top of the base 1, one side of the support column 2 is rotatably connected with an arc-shaped inserted link 5 through a rotating shaft 4 and used for fixing the support column 2, a torsion spring is sleeved on the rotating shaft 4, two ends of the torsion spring are respectively fixedly connected with the arc-shaped inserted link 5 and the support column 2, a certain torsion support is provided for the arc-shaped inserted link 5, and a plurality of slots corresponding to the arc-shaped inserted link 5 are arranged at the top of the base 1 in a surrounding manner;

in the embodiment, a cavity is arranged at the bottom of the supporting column 2, a screw 6 is rotationally connected in the cavity and used for driving the supporting plate 12 to move up and down, a first gear 7 is fixedly sleeved on the screw 6, a second gear 8 meshed with the first gear 7 is arranged in the cavity and used for driving the first gear 7 to rotate, the second gear 8 is rotationally connected with the inner wall of the cavity through a rotating rod 9, one end of the rotating rod 9 penetrates through the inner wall of the cavity and is fixedly connected with a knob 10 used for driving the rotating rod 9 to rotate, a supporting sleeve 19 is rotationally sleeved on the rotating rod 9 to prevent the rotating rod 9 from shaking, and one side of the supporting sleeve 19 abuts against the inner wall of the cavity;

in this embodiment, a clamping rod 11 is slidably inserted into one end of the knob 10 and used for fixing the knob 10, a plurality of clamping grooves corresponding to the clamping rod 11 are arranged on the outer wall of the support column 2 in a surrounding manner, a clamping sleeve 16 is fixedly sleeved at one end of the clamping rod 11 close to the support column 2, a pull rod 17 is fixedly connected to one end of the clamping rod 11 far away from the clamping sleeve 16, a spring 18 is sleeved on the clamping rod 11, and two ends of the spring 18 are respectively fixedly connected with the clamping sleeve 16 and the knob 10 and play a certain role of elastic support for the clamping rod 11;

in this embodiment, the top of support column 2 is equipped with the opening, and the top of screw rod 6 runs through the cavity inner wall and extends to the opening in, and backup pad 12 has been cup jointed to the one end screw thread that screw rod 6 extends for support measuring device body 3, the one end of backup pad 12 and the outer wall fixed connection of measuring device body 3, the bottom fixedly connected with fixed block 13 of support column 2, be connected through telescopic link 14 between backup pad 12 and the fixed block 13, prevent that backup pad 12 from rocking.

In the embodiment, the direction of the measuring device body 3 is adjusted by rotating the supporting column 2, then the supporting column 2 is fixed by the arc-shaped inserted rod 5, then the rotating knob 10 is rotated to drive the rotating rod 9 to rotate, and meanwhile, the screw rod 6 is driven to rotate by the meshing action between the first gear 7 and the second gear 8, so that the height of the measuring device body 3 is adjusted by the supporting plate 12, and then the rotating knob 10 is fixed by the clamping rod 11;

in this embodiment, the setting of latch segment 15 can conveniently be fixed base 1, and torsion spring can play certain torsion to arc inserted bar 5 and support, and spring 18 can play certain elastic support to kelly 11, and telescopic link 14 can prevent rocking of backup pad 12.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a power transformer residual magnetism measuring device, includes base (1), support column (2) and measuring device body (3), its characterized in that: the utility model discloses a novel support structure, including support column (2), base (1), one side of support column (2) is rotated through pivot (4) and is connected with arc inserted bar (5), the top of base (1) is encircleed and is equipped with a plurality of slots that correspond with arc inserted bar (5), the bottom of support column (2) is equipped with the cavity, the cavity internal rotation is connected with screw rod (6), it has first gear (7) to fix the cover on screw rod (6), be equipped with in the cavity with first gear (7) engaged with second gear (8), the inner wall of second gear (8) and cavity passes through bull stick (9) and rotates and be connected, the inner wall and the fixedly connected with knob (10) of cavity are run through to the one end of bull stick (9), the one end slip of knob (10) is inserted and is equipped with kelly (11), the outer wall of support column (2) is gone up to encircle and is equipped with a plurality of draw-in grooves that correspond with kelly (11), the top of support column (2) is equipped with the opening, the top of screw rod (6) runs through the cavity inner wall and extends to the opening in, backup pad (12) have been cup jointed to the one end screw thread that screw rod (6) extended, the one end of backup pad (12) and the outer wall fixed connection of measuring device body (3), the bottom fixedly connected with fixed block (13) of support column (2), be connected through telescopic link (14) between backup pad (12) and fixed block (13).

2. A power transformer residual magnetism measuring device according to claim 1, characterized in that: the bottom fixedly connected with of base (1) has a plurality of latch segments (15), be equipped with the check lock on latch segment (15).

3. A power transformer residual magnetism measuring device according to claim 1, characterized in that: the rotating shaft (4) is sleeved with a torsion spring, and two ends of the torsion spring are fixedly connected with the arc-shaped inserted rod (5) and the support column (2) respectively.

4. A power transformer residual magnetism measuring device according to claim 1, characterized in that: clamping sleeve (16) have been fixed to the one end that kelly (11) are close to support column (2), one end fixedly connected with pull rod (17) that cutting sleeve (16) were kept away from to kelly (11).

5. A power transformer residual magnetism measuring device according to claim 1 or 4, characterized in that: the clamp rod (11) is sleeved with a spring (18), and two ends of the spring (18) are fixedly connected with the clamp sleeve (16) and the knob (10) respectively.

6. A power transformer residual magnetism measuring device according to claim 1, characterized in that: a support sleeve (19) is rotatably sleeved on the rotating rod (9), and one side of the support sleeve (19) is abutted against the inner wall of the cavity.