CN218037019U

CN218037019U - Anti-interference telescopic voltage transformer

Info

Publication number: CN218037019U
Application number: CN202221999127.5U
Authority: CN
Inventors: 陆健; 徐晨; 邹微竹
Original assignee: Wuxi Desheng Transformer Co ltd
Current assignee: Wuxi Desheng Transformer Co ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2022-12-13
Anticipated expiration: 2032-07-29

Abstract

The utility model belongs to the technical field of the electronic component technique and specifically relates to a telescopic voltage transformer of anti-interference type is related to, it includes the bottom tube, set up in the low pressure capacitive voltage divider of bottom tube one end, insert from the bottom tube other end and establish to the bottom tube in and rather than flexible complex flexible pipe, the one end that flexible pipe lies in the bottom tube outside is equipped with high-pressure capacitive voltage divider, be equipped with between bottom tube and the flexible pipe and be used for the flexible drive assembly of drive pipe, it has the installing port to open about its axis symmetry on the lateral wall of bottom tube, drive assembly is including acting as go-between, rotate the gear of connection in the installing port, set up the rack on flexible pipe lateral wall, equal circumference is opened there is the wire winding groove on every gear, the one end of acting as go-between is around rolling up in the wire winding groove of one of them gear, the other end is around rolling up in the wire winding groove of another gear. The method and the device have the advantage of reducing the possibility that the external magnetic field interferes with the measurement accuracy of the voltage transformer.

Description

Anti-interference telescopic voltage transformer

Technical Field

The utility model belongs to the technical field of the electronic component technique and specifically relates to a telescopic voltage transformer of anti-interference type is related to.

Background

A voltage transformer is an instrument for transforming voltage, and the purpose of transforming voltage is mainly to supply power to a measuring instrument and a relay protection device, to measure voltage, power and electric energy of a line, or to protect valuable equipment, motors and transformers in the line when the line fails, so that the capacity of the voltage transformer is small.

Chinese patent No. CN207516432U discloses a self-checking capacitive voltage-dividing type optical voltage sensor, which includes a high-voltage capacitive voltage divider, an automatic lifting device and a low-voltage capacitive voltage divider. The automatic lifting device has three layers, and the motor provides power to realize the lifting function.

A coil is arranged in the motor, and after the coil is electrified, a magnetic field is generated and penetrates into the high-voltage capacitive voltage divider and the low-voltage capacitive voltage divider, so that output interference signals are large, and the measurement accuracy of the voltage transformer can be influenced.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem that the voltage transformer generates magnetic field interference by the work of a motor and results in poor measurement accuracy, the application provides an anti-interference telescopic voltage transformer.

The application provides a pair of telescopic voltage transformer of anti-interference type adopts following technical scheme:

an anti-interference telescopic voltage transformer comprises a bottom pipe, a low-voltage capacitive voltage divider arranged at one end of the bottom pipe, and a telescopic pipe which is inserted into the bottom pipe from the other end of the bottom pipe and is in telescopic fit with the bottom pipe, wherein a high-voltage capacitive voltage divider is arranged at one end of the telescopic pipe, which is positioned outside the bottom pipe, and a driving assembly for driving the telescopic pipe to stretch is arranged between the bottom pipe and the telescopic pipe;

the side wall of the bottom tube is symmetrically provided with mounting openings about the axis of the bottom tube, the driving assembly comprises a pull wire, gears and racks, the gears are rotatably connected in the mounting openings, the racks are arranged on the outer side wall of the telescopic tube, the gears correspond to and are meshed with the racks one to one, each gear is circumferentially provided with a winding groove, one end of the pull wire is wound in the winding groove of one gear, the other end of the pull wire is wound in the winding groove of the other gear, and the winding directions of the two ends of the pull wire on the two gears are opposite.

Through adopting above-mentioned technical scheme, the manual rotation gear of workman, a gear realizes the rolling to acting as go-between, and another gear realizes unreeling to pulling, and the rack drives flexible pipe motion under the effect of gear, and the workman is according to the rotation direction of gear to this realizes going up and down to high-pressure capacitive voltage divider through flexible pipe. The driving assembly is driven in a manual mode, and therefore the possibility that an external magnetic field influences the measurement accuracy of the voltage transformer is reduced.

Optionally, be close to in the bottom tube the pivot is worn to be equipped with in the position rotation of low pressure capacitive voltage divider, sliding sleeve is equipped with the reel in the pivot, it is relative on the bottom tube lateral wall the through-hole has been seted up to the position of reel, the stay wire is followed the bottom tube passes through outward the through-hole penetrates in the bottom tube and around the coiling the reel.

Through adopting above-mentioned technical scheme, the setting up of through-hole makes acting as go-between to arrange outside the bottom tube to this realizes dodging to the elevating movement of flexible pipe, has reduced to act as go-between and has arranged in the bottom tube, thereby causes the possibility of hindrance to the elevating movement of fall way.

Optionally, a midpoint of the length of the pull wire is bonded to the reel.

Through adopting above-mentioned technical scheme, can realize the rolling and unreel to acting as go-between when guaranteeing that the reel rotates, reduced the possibility of reel idle running.

Optionally, a plurality of top supporting members are supported between the telescopic pipe and the bottom pipe, and the top supporting members are symmetrically arranged around the axis of the bottom pipe.

Through adopting above-mentioned technical scheme, the piece is to its guide effect of the vertical elevating movement of flexible pipe, and the friction between piece and the flexible pipe can also reduce flexible pipe rotation, leads to the staggered possibility of gear and rack.

Optionally, be equipped with the spacing strip that is on a parallel with its axis on the pivot lateral wall, it has the confession to open on the inner wall of reel spacing strip embedding and rather than sliding fit's spacing groove.

Through adopting above-mentioned technical scheme, spacing and spacing groove cooperation have reduced the idle possibility of pivot.

Optionally, the bottom tube lateral wall is relative the position department that the pivot rotated to wear out is equipped with the installation piece, the longitudinal section of installation piece is regular polygon setting, the one end of pivot is equipped with the gag lever post that is the L type, one side of gag lever post with the pivot passes through fastening bolt and connects, the opposite side hug closely in the installation piece lateral wall with the nearest position department of pivot axis.

Through adopting above-mentioned technical scheme, after high-pressure capacitive voltage divider goes up and down to suitable height, the workman removed the position of gag lever post, makes its one side hug closely the position that is closest to its axis on the installation piece lateral wall, later with the gag lever post bolt in the tip of pivot, the pivot can't continue to rotate to drive assembly has realized the locking.

Optionally, the fastening bolt is a claw bolt.

Through adopting above-mentioned technical scheme, the workman need not with the help of the instrument, and direct manual realizes the elasticity to fastening bolt.

Optionally, one end of the rotating shaft is connected with a handle.

Through adopting above-mentioned technical scheme, the workman can make things convenient for laborsaving rotation pivot more.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the manual rotation gear of workman, a gear realizes the rolling to acting as go-between, and another gear realizes unreeling to drawing, and the rack drives flexible pipe motion under the effect of gear to the workman realizes going up and down through flexible pipe to high-pressure capacitive voltage divider according to the rotation direction of gear to this. The driving assembly is driven manually, so that the possibility that the external magnetic field influences the measurement accuracy of the voltage transformer is reduced;

2. after the high-voltage capacitive voltage divider goes up and down to a proper height, a worker moves the position of the limiting rod to enable one side of the limiting rod to be tightly attached to the position, closest to the axis, on the outer side wall of the installation block, then the limiting rod is connected to the end portion of the rotating shaft in a bolted mode, the rotating shaft cannot rotate continuously, and therefore the driving assembly is locked.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present application.

FIG. 2 is a schematic view showing the connection relationship between the gear, the cable, the reel and the rotating shaft in the embodiment of the present application.

Fig. 3 is a schematic structural view of the bottom tube and the top support member in the embodiment of the present application.

Fig. 4 is an enlarged view of a portion a in fig. 1.

Description of reference numerals: 1. a bottom tube; 101. an installation port; 102. a through hole; 2. a low voltage capacitive voltage divider; 3. a telescopic pipe; 4. a high voltage capacitive divider; 51. pulling a wire; 52. a gear; 521. a winding slot; 53. a rack; 54. a rotating shaft; 55. a reel; 6. a top support; 61. supporting the arc plate; 62. a pillar; 7. a limiting strip; 8. mounting blocks; 9. a limiting rod; 10. fastening a bolt; 11. a handle.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses telescopic voltage transformer of anti-interference type.

Referring to fig. 1, the telescopic voltage transformer of anti-interference type includes the bottom tube 1 of vertical setting, sets up in the low pressure capacitive voltage divider 2 of bottom tube 1 bottom, inserts from bottom tube 1 top and establishes to the bottom tube 1 in and rather than flexible complex flexible pipe 3, and the top of flexible pipe 3 is located the bottom tube 1 outside and is provided with high pressure capacitive voltage divider 4.

Referring to fig. 1 and 2, a driving assembly for driving the telescopic tube 3 to extend and retract up and down is disposed between the bottom tube 1 and the telescopic tube 3, and the driving assembly includes a pull wire 51, two gears 52 and two racks 53.

Two mounting openings 101 are symmetrically formed in the side wall of the bottom tube 1 about the axis of the bottom tube, the mounting openings 101 are close to the top of the bottom tube 1, one mounting opening 101 corresponds to one gear 52, and the gears 52 are rotatably connected in the corresponding mounting opening 101.

Two racks 53 are both fixedly connected to the outer side wall of the telescopic pipe 3 and are parallel to the axis of the telescopic pipe 3, the racks 53 are in one-to-one correspondence with and meshed with the gears 52, and a winding groove 521 is circumferentially formed in each gear 52.

One end of the pulling wire 51 is wound in the winding groove 521 of one of the gears 52, the other end is wound in the winding groove 521 of the other gear 52, and the winding directions of the two ends of the pulling wire 51 on the two gears 52 are opposite.

Referring to fig. 1 and 2, under the action of the driving assembly, one gear 52 unwinds the wire 51, and the other gear 52 winds the wire 51. The rack 53 drives the telescopic pipe 3 to move up and down under the action of the gear 52. The worker controls the telescopic tube 3 to ascend or descend according to the rotating direction of the gear 52.

The driving assembly is used for lifting the high-voltage capacitive voltage divider 4 in a manual operation mode, so that the possibility that an external magnetic field interferes the high-voltage capacitive voltage divider 4 or the low-voltage capacitive voltage divider 2 is reduced, and the detection precision of the voltage transformer is improved.

Referring to fig. 1 and 3, a plurality of top struts 6 are fixedly connected to the inner wall of the bottom pipe 1, and the plurality of top struts 6 are symmetrically arranged about the axis of the bottom pipe 1. The top support member 6 comprises a top support arc plate 61 which is arc-shaped and clings to the outer wall of the telescopic pipe 3, and a support column 62 which is fixedly connected between the top support arc plate 61 and the inner wall of the bottom pipe 1.

The arrangement of the top support member 6 plays a role in guiding and supporting the telescopic motion of the telescopic pipe 3, so that the possibility that the telescopic pipe 3 is inclined and twisted in the bottom pipe 1 is reduced, and the possibility that the rack 53 and the gear 52 are staggered due to circumferential rotation of the telescopic pipe 3 can be reduced through friction.

Referring to fig. 1, 2 and 4, a rotating shaft 54 is rotatably arranged in the bottom tube 1 at a position close to the low-voltage capacitive voltage divider 2 in a penetrating manner, the rotating shaft 54 is horizontally arranged and is slidably sleeved with a reel 55, two through holes 102 are formed in the side wall of the bottom tube 1 at positions opposite to the reel 55, the two through holes 102 are symmetrically arranged relative to the axis of the bottom tube 1, and the stay wire 51 penetrates into the bottom tube 1 through the through holes 102 from the outside of the bottom tube 1 and winds around the reel 55.

The worker drives the reels 55 through the rotating shaft 54 to synchronously rotate in the same direction, the reels 55 unreel the pull wires 51 on one gear 52, and reel the pull wires 51 on the other gear 52.

The pull wire 51 is wound on the winding wheel 55 of the winding pipe, and the through hole 102 enables the pull wire 51 to be arranged outside the bottom pipe 1, so that the pull wire 51 avoids the telescopic pipe 3, and the possibility that the pull wire 51 is arranged in the bottom pipe 1 to affect the lifting of the telescopic pipe 3 is reduced.

Referring to fig. 1, 2 and 4, the middle point of the length of the wire 51 is bonded with the wire reel 55, so that the wire 51 can be wound and unwound by ensuring the rotation of the wire reel 55, and the possibility of idle rotation of the wire reel 55 is reduced.

Referring to fig. 1, 2 and 4, the outer side wall of the rotating shaft 54 is integrally formed with a limit strip 7 parallel to the axis thereof, and the inner wall of the reel 55 is formed with a limit groove (not shown) for the limit strip 7 to be inserted and slidably engaged therewith. The limiting groove is matched with the limiting strip 7, so that the possibility of idle running of the rotating shaft 54 is reduced.

Referring to fig. 1, 2 and 4, in order to lock the position of the high voltage capacitive voltage divider 4 after height adjustment, a mounting block 8 is integrally formed at a position where the outer sidewall of the bottom tube 1 penetrates through relative to the rotating shaft 54, and the longitudinal section of the mounting block 8 is arranged in a regular polygon shape.

One end of the rotating shaft 54 is provided with an L-shaped limiting rod 9, one side of the limiting rod 9 is connected with the rotating shaft 54 through a fastening bolt 10, and the other side of the limiting rod 9 is tightly attached to the position, closest to the axis of the rotating shaft 54, of the outer side wall of the mounting block 8. When the worker tightens the fastening bolt 10, the rotation shaft 54 is hard to rotate any more, thereby locking the driving assembly.

Referring to fig. 4, the fastening bolt 10 is a claw bolt, so that a worker can directly tighten or loosen the fastening bolt 10 without using a tool.

Referring to fig. 4, a handle 11 is fixedly coupled to one end of the rotary shaft 54, so that a worker can rotate the rotary shaft 54 more conveniently and laborsavingly.

The implementation principle of the anti-interference telescopic voltage transformer in the embodiment of the application is as follows:

the workman rotates pivot 54 through handle 11, and pivot 54 drives reel 55 and rotates, and reel 55 realizes rolling to acting as go-between 51 on one side, realizes unreeling to acting as go-between 51 on the other side, and two synchronous rotations of gear 52 and rotation opposite direction, rack 53 drive flexible pipe 3 under the effect of gear 52 and realize ascending or descending to this height of adjusting high-pressure capacitor divider 4.

After the height adjustment, the worker moves the position of the limiting rod 9, so that one side of the limiting rod 9 is tightly attached to the position, closest to the axis of the rotating shaft 54, on the outer side wall of the mounting block 8, the limiting rod 9 is bolted to the rotating shaft 54 through the fastening bolt 10, the rotating shaft 54 cannot continue to rotate, and the driving assembly is locked.

The driving assembly can realize the lifting of the high-voltage capacitive voltage divider 4 in a manual mode without the interference of an external magnetic field, and the measurement precision of the voltage transformer is improved.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a telescopic voltage transformer of anti-interference type which characterized in that: the device comprises a bottom pipe (1), a low-voltage capacitive voltage divider (2) arranged at one end of the bottom pipe (1), and a telescopic pipe (3) which is inserted into the bottom pipe (1) from the other end of the bottom pipe (1) and is in telescopic fit with the bottom pipe, wherein a high-voltage capacitive voltage divider (4) is arranged at one end of the telescopic pipe (3) which is positioned outside the bottom pipe (1), and a driving assembly for driving the telescopic pipe (3) to stretch is arranged between the bottom pipe (1) and the telescopic pipe (3);

the side wall of the bottom tube (1) is symmetrically provided with an installation opening (101) about the axis of the bottom tube, the driving assembly comprises a pull wire (51), gears (52) rotatably connected into the installation opening (101) and racks (53) arranged on the outer side wall of the extension tube (3), the gears (52) correspond to the racks (53) one by one and are meshed with each other, each gear (52) is circumferentially provided with a winding groove (521), one end of the pull wire (51) is wound in the winding groove (521) of one gear (52), the other end of the pull wire is wound in the winding groove (521) of the other gear (52), and the winding directions of the two ends of the pull wire (51) on the two gears (52) are opposite.

2. The tamper resistant telescopic voltage transformer of claim 1, wherein: be close to in bottom tube (1) the position of low pressure capacitive voltage divider (2) is rotated and is worn to be equipped with pivot (54), sliding sleeve is equipped with reel (55) on pivot (54), it is relative on bottom tube (1) lateral wall through-hole (102) have been seted up to the position of reel (55), act as go-between (51) are followed bottom tube (1) passes through outward through-hole (102) penetrate in bottom tube (1) and around rolling up reel (55).

3. The tamper-resistant telescoping voltage transformer of claim 2, wherein: the pull wire (51) is bonded to the reel (55) at the midpoint of its length.

4. The tamper resistant telescopic voltage transformer of claim 1, wherein: a plurality of top supporting pieces (6) are supported between the telescopic pipe (3) and the bottom pipe (1), and the top supporting pieces (6) are symmetrically arranged relative to the axis of the bottom pipe (1).

5. The tamper-resistant telescoping voltage transformer of claim 2, wherein: be equipped with spacing strip (7) that is on a parallel with its axis on pivot (54) lateral wall, it has the confession to open on the inner wall of reel (55) spacing strip (7) embedding and rather than sliding fit's spacing groove.

6. The tamper-resistant telescoping voltage transformer of claim 2, wherein: the utility model discloses a fixing device for the elevator car, including bottom tube (1), pivot (54), installation piece (8), the longitudinal section of installation piece (8) is regular polygon setting, the one end of pivot (54) is equipped with gag lever post (9) that are the L type, one side of gag lever post (9) with pivot (54) are connected through fastening bolt (10), the opposite side hug closely in installation piece (8) lateral wall with the nearest position department of pivot (54) axis.

7. The tamper resistant telescopic voltage transformer of claim 6, wherein: the fastening bolt (10) is a claw bolt.

8. The tamper-resistant telescoping voltage transformer of claim 2, wherein: one end of the rotating shaft (54) is connected with a handle (11).