CN211293136U

CN211293136U - Power transformer partial discharge detection equipment

Info

Publication number: CN211293136U
Application number: CN201922019072.1U
Authority: CN
Inventors: 虞文权; 余大南; 范进
Original assignee: Sichuan Hua Dong Electric Group Co ltd
Current assignee: Sichuan Hua Dong Electric Group Co ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-08-18
Anticipated expiration: 2029-11-21

Abstract

The utility model provides a power transformer partial discharge check out test set belongs to power transformer technical field. The partial discharge detection equipment for the power transformer comprises a support piece, a discharge detector assembly and a regulating frame assembly. The discharge detector assembly comprises a discharge detector body and a probe piece matched with the discharge detector body, the first rack is fixed on the box body, and the guide column and the screw rod penetrate through the second rack. The track is fixed in the one end of second frame, but third frame sliding connection in the track, probe spare set up respectively in the both ends of third frame. The second frame can go up and down along the guide post, and then can adjust the whole height of second frame, utilizes the gear drive rack to remove for the third frame can be in the translation of track, is convenient for detect the higher power transformer in position, reduces and detects the degree of difficulty.

Description

Power transformer partial discharge detection equipment

Technical Field

The utility model relates to a power transformer field particularly, relates to a power transformer partial discharge check out test set.

Background

A power transformer is a stationary electrical device that is used to transform an ac voltage (current) of a certain value into another voltage (current) of the same frequency or different values. When the power transformer equipment generates partial discharge, electromagnetic waves are generated, and when the electromagnetic waves propagate outwards, a transient voltage signal to ground is generated. The magnitude of this signal is directly related to the severity of the partial discharge and the proximity of the discharge point. The detection can be performed by using a special detector, and the detector is a partial discharge detector.

When the partial discharge detector is used for detecting the power transformer, an operator is often required to hold the detection probe to be close to the outer surface of the power transformer for detection, and the detection difficulty is higher for a region with a higher position.

SUMMERY OF THE UTILITY MODEL

In order to compensate above not enough, the utility model provides a power transformer partial discharge check out test set aims at improving the problem that is not convenient for carry out the partial discharge to the higher region in power transformer position and detects.

The utility model discloses a realize like this:

the utility model provides a power transformer partial discharge check out test set, including support piece, discharge detector subassembly and adjusting bracket subassembly.

The support member includes a case.

The discharge detector assembly comprises a discharge detector body and a probe piece matched with the discharge detector body, and the discharge detector body is placed on the top of the box body.

The adjusting bracket assembly comprises a lifting bracket and a translation bracket, the lifting bracket comprises a first rack, a screw rod, a first speed reducing motor, a guide post and a second rack, the first rack is fixed on the box body, the screw rod is rotatably connected between the first rack, the output end of the first speed reducing motor is in transmission connection with the screw rod, the guide post is fixed between the first rack, the guide post is in threaded connection with the screw rod, the second rack is in threaded connection with the second rack.

The translation support includes track, third frame, rack, second gear motor and gear, the track is fixed in the one end of second frame, but third frame sliding connection in the track, second gear motor install in second frame bottom, gear connection in second gear motor's output, the gear with the rack toothing, the probe spare set up respectively in the both ends of third frame.

The utility model discloses an in one embodiment, probe spare includes first test probe, second probe and third probe, first test probe install in the front that can detect power transformer is in the tip of third frame, the second probe is fixed in the both sides face of third frame can detect power transformer's side, the third probe connect in third frame bottom can detect power transformer's top.

In an embodiment of the present invention, the track is provided with a sliding slot adapted to the third frame, and the third frame runs through the sliding slot.

In an embodiment of the present invention, a limiting block is fixed near two ends of the third frame.

The utility model discloses an in the embodiment, the bottom of box is fixed with the gyro wheel, one side of box articulates there is the door body.

In an embodiment of the present invention, a pushing handle is connected to one side of the top of the box body.

In an embodiment of the present invention, the pushing handle is covered with a rubber or polyurethane insulating pad.

In an embodiment of the present invention, the second frame is provided with a screw hole adapted to the screw rod.

In an embodiment of the present invention, the second frame is provided with a guide hole adapted to the guide post.

In an embodiment of the present invention, the guide post is in clearance fit with the inner hole wall of the guide hole.

The utility model has the advantages that: the utility model discloses a power transformer partial discharge check out test set that above-mentioned design obtained, during the use, utilize the screw thread transmission principle, when the lead screw operation, the second frame can go up and down along the guide post, and then can adjust the whole height of second frame, utilize the gear drive rack to remove, make the third frame can be translation in the track, make the third frame can be close to or keep away from the power transformer surface, and then can utilize and carry out the partial discharge with the probe spare of discharge detector body adaptation and detect, be convenient for detect the higher power transformer in position, reduce the detection degree of difficulty.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a power transformer partial discharge detection device provided by an embodiment of the present invention;

fig. 2 is a schematic structural view of the translation bracket according to the embodiment of the present invention when lifted;

fig. 3 is a schematic structural diagram of a supporting member according to an embodiment of the present invention;

FIG. 4 is a schematic view of an adjusting bracket assembly according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a translation bracket according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a track provided in an embodiment of the present invention;

fig. 7 is a schematic view of a distribution structure of probe members at a third frame end according to an embodiment of the present invention.

In the figure: 10-a support; 110-a box body; 120-a roller; 130-a door body; 140-pushing hands; 20-a discharge detector assembly; 210-a probe piece; 2110-first detection probe; 2120-a second probe; 2130-a third probe; 30-a regulator bracket assembly; 310-a lifting support; 3110-a first rack; 3120-lead screw; 3130 — a first geared motor; 3140-guide posts; 3150-a second gantry; 320-a translation bracket; 3220-track; 3230-a third rack; 3240-rack; 3250-a second gear motor; 3260-gear; 3270-stop block.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

Referring to fig. 1 and 2, the present invention provides a power transformer partial discharge detection apparatus, which includes a support member 10, a discharge detector assembly 20, and an adjusting bracket assembly 30.

Referring to fig. 3, the supporting member 10 includes a case 110 and a roller 120 fixed to a bottom of the case 110, and the roller 120 may be a universal wheel. One side of box 110 articulates there is a body 130, the inside storage instrument that can be used to of box 110, one side at box 110 top is connected with pushing hands 140, pushing hands 140 coats and is stamped rubber or the insulating pad of polyurethane, when specifically setting up, it is articulated through the hinge between box 110 and the body 130, during the use, operating personnel promotes the equipment walking through pushing hands 140, it is convenient to remove, through the design of rubber or the insulating pad of polyurethane, certain antiskid has and insulating effect.

Referring to fig. 4, the adjusting bracket assembly 30 includes a lifting bracket 310 and a translation bracket 320, the lifting bracket 310 includes a first frame 3110, a screw 3120, a first deceleration motor 3130, a guide post 3140 and a second frame 3150, the first frame 3110 is fixed to the box body 110, the screw 3120 is rotatably connected between the first frame 3110, an output end of the first deceleration motor 3130 is drivingly connected to the screw 3120, the guide post 3140 is fixed between the first frame 3110, when the device is specifically arranged, the first frame 3110 is fixedly welded to the box body 110, the lead screw 3120 is rotatably connected to the first frame 3110 through a bearing, the first speed reduction motor 3130 is connected to the lead screw 3120 through a coupling, the first speed reduction motor 3130 can drive the lead screw 3120 to operate, the first speed reduction motor 3130 is fixedly installed in the box body 110 through a bolt, two ends of the guide post 3140 are fixedly welded to the first frame 3110, and it should be noted that the lead screw 3120 and the guide post 3140 are parallel to each other and both vertically arranged.

The guide post 3140 all runs through the second frame 3150 with the lead screw 3120, the lead screw 3120 and the spiro union of second frame 3150, in this application, set up the screw with the adaptation of lead screw 3120 on the second frame 3150, set up the guiding hole with the adaptation of guide post 3140 on the second frame 3150, utilize the screw drive principle, when lead screw 3120 operation, the second frame 3150 can go up and down along the guide post 3140, the inner bore wall clearance fit of guide post 3140 and guiding hole, make the guide post 3140 have certain guide effect.

Referring to fig. 5, the translation support 320 includes a track 3220, a third frame 3230, a rack 3240, a second reduction motor 3250, and a gear 3260, the track 3220 is fixed to one end of the second frame 3150, the track 3220 is fixed by welding, and the third frame 3230 is slidably connected to the track 3220.

Referring to fig. 6, in a specific arrangement, a sliding groove adapted to the third frame 3230 is formed in the track 3220, the third frame 3230 penetrates through the sliding groove, the limiting block 3270 is fixed at two ends of the third frame 3230, the limiting block 3270 is fixed by welding, the limiting block 3270 has a good blocking effect, and the third frame 3230 is prevented from being loosened from the track 3220 by the design of the limiting block 3270.

The second gear motor 3250 is mounted at the bottom of the second frame 3150, the gear 3260 is connected to an output end of the second gear motor 3250, the gear 3260 is engaged with the rack 3240, and the rack 3240 is fixed by welding or bolts.

Referring to fig. 7, the electrical discharge tester assembly 20 includes an electrical discharge tester body and a probe member 210 adapted to the electrical discharge tester body, and the electrical discharge tester body is disposed on the top of the box 110. The probe members 210 are respectively disposed at both ends of the third housing 3230, each of the probe members 210 includes a first probe 2110, a second probe 2120, and a third probe 2130, the first probe 2110 is mounted at an end of the third housing 3230 and can detect a front surface of the power transformer, the second probe 2120 is fixed to both side surfaces of the third housing 3230 and can detect a side surface of the power transformer, and the third probe 2130 is connected to a bottom of the third housing 3230 and can detect a top surface of the power transformer.

It should be noted that the detection principle of the discharge detector body and the detection probe is clear to those skilled in the art, and the specific installation manner of the first detection probe 2110, the second probe 2120 and the third probe 2130 is also determined according to actual needs, and can be fixed by screws or other manners, which is not described in detail herein.

The working principle of the power transformer partial discharge detection equipment is as follows: an operator pushes the support 10 to a working area, when a power transformer with a higher position is detected, the first speed reduction motor 3130 can drive the screw rod 3120 to operate, by using a screw transmission principle, when the screw rod 3120 operates, the second rack 3150 can ascend and descend along the guide column 3140, and the overall height of the second rack 3150 can be adjusted, the second speed reduction motor 3250 can drive the gear 3260 to operate, and then the gear 3260 is used for driving the rack 3240 to move, so that the third rack 3230 can translate in the track 3220, the third rack 3230 can be close to or far away from the surface of the power transformer, and then partial discharge detection can be performed by using the probe piece 210 matched with the discharge detector body, and the operator can intuitively know data detected by the probe piece 210 on the discharge detector body.

It should be noted that the specific model specifications of the discharge detector body, the first reduction motor 3130 and the second reduction motor 3250 need to be determined by type selection according to the actual specification of the device, and the specific type selection calculation method adopts the prior art, so detailed burdens are not needed.

The power supply and the principles of the discharge meter body, the first gearmotor 3130 and the second gearmotor 3250 will be clear to the person skilled in the art and will not be described in detail here.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A power transformer partial discharge detection device is characterized by comprising

A support (10), the support (10) comprising a box (110);

the discharge detector assembly (20) comprises a discharge detector body and a probe piece (210) matched with the discharge detector body, and the discharge detector body is placed on the top of the box body (110);

the adjusting bracket assembly (30), the adjusting bracket assembly (30) comprises a lifting bracket (310) and a translation bracket (320), the lifting bracket (310) comprises a first frame (3110), a screw rod (3120), a first speed reduction motor (3130), a guide column (3140) and a second frame (3150), the first frame (3110) is fixed on the box body (110), the screw rod (3120) is rotatably connected between the first frames (3110), the output end of the first speed reduction motor (3130) is in transmission connection with the screw rod (3120), the guide column (3140) is fixed between the first frames (3110), the guide column (3140) and the screw rod (3120) both penetrate through the second frame (3150), and the screw rod (3120) is in threaded connection with the second frame (3150);

the translation support (320) comprises a track (3220), a third rack (3230), a rack (3240), a second speed reduction motor (3250) and a gear (3260), the track (3220) is fixed at one end of the second rack (3150), the third rack (3230) is slidably connected to the track (3220), the second speed reduction motor (3250) is installed at the bottom of the second rack (3150), the gear (3260) is connected to the output end of the second speed reduction motor (3250), the gear (3260) is meshed with the rack (3240), and the probe pieces (210) are respectively arranged at two ends of the third rack (3230).

2. The apparatus for detecting partial discharge of power transformer as claimed in claim 1, wherein said probe member (210) comprises a first detecting probe (2110), a second detecting probe (2120) and a third detecting probe (2130), said first detecting probe (2110) is mounted on the end of said third housing (3230) and can detect the front of power transformer, said second detecting probe (2120) is fixed on the two sides of said third housing (3230) and can detect the side of power transformer, said third detecting probe (2130) is connected to the bottom of said third housing (3230) and can detect the top of power transformer.

3. The power transformer partial discharge detection device of claim 1, wherein a sliding groove adapted to the third frame (3230) is formed inside the track (3220), and the third frame (3230) penetrates through the sliding groove.

4. A power transformer partial discharge detection apparatus according to claim 1, characterised in that a limiting block (3270) is fixed near both ends of the third housing (3230).

5. The power transformer partial discharge detection device of claim 1, wherein a roller (120) is fixed at the bottom of the box body (110), and a door body (130) is hinged to one side of the box body (110).

6. A power transformer partial discharge detection apparatus according to claim 1, characterized in that a push handle (140) is connected to one side of the top of the box body (110).

7. A power transformer partial discharge detection apparatus according to claim 6, characterized in that the pushing handle (140) is covered with a rubber or polyurethane insulating pad.

8. The power transformer partial discharge detection device of claim 1, wherein the second frame (3150) is provided with a screw hole adapted to the screw rod (3120).

9. The power transformer partial discharge detection device of claim 1, wherein the second frame (3150) is provided with a guide hole adapted to the guide post (3140).

10. A power transformer partial discharge detection apparatus according to claim 9, wherein the guiding stud (3140) is clearance fitted with the inner bore wall of the guiding bore.