CN214585585U

CN214585585U - Relay protection debugging instrument switching mechanism for outdoor 35kV and above transformer substation

Info

Publication number: CN214585585U
Application number: CN202120485455.2U
Authority: CN
Inventors: 王毅; 陈昌黎; 王军; 何守胜; 律思诗; 徐坚; 甘利红; 刘震; 郑喻
Original assignee: State Grid Corp of China SGCC; Xianning Power Supply Co of State Grid Hubei Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; Xianning Power Supply Co of State Grid Hubei Electric Power Co Ltd
Priority date: 2021-03-05
Filing date: 2021-03-05
Publication date: 2021-11-02
Anticipated expiration: 2031-03-05

Abstract

The utility model discloses a relay protection debugging instrument switching mechanism for outdoor 35kV and above transformer substations in the technical field of secondary debugging auxiliary equipment of transformer substations, which comprises a bearing underframe, wherein one side of the top of the bearing underframe is hinged with a roll-over stand through a hinge, the top of the roll-over stand is provided with a handle, one side of the bottom of the bearing underframe close to the roll-over stand is provided with a universal wheel, the other side of the bottom of the bearing underframe is provided with a fixed foot brace, the roll-over stand is provided with four test wire switching mechanisms which are respectively used as an A phase, a B phase, a C phase and a grounding phase, the bottom of the bearing underframe is provided with a test wire switching mechanism which is used as the external grounding of a relay protection tester, the utility model can realize automatic take-up by driving a rotating shaft to rotate through a driving motor, combines the constraint effect of a fixed bunch block, the arrangement of a test wire is more efficient, and when in actual drawing use, a prolonged lead can be directly pulled, the reverse rotation prevention line of the driving motor is not required to be controlled, the length can be randomly selected and used, and the device is more convenient and fast.

Description

Relay protection debugging instrument switching mechanism for outdoor 35kV and above transformer substation

Technical Field

The utility model relates to a transformer substation's secondary debugging auxiliary assembly technical field specifically is an outdoor 35kV reaches above transformer substation with relay protection debugging appearance change-over mechanism.

Background

The debugging work of the relay protection device is that relay protection personnel input analog voltage and current to the device or the electrical equipment by using a debugging instrument according to professional regulations and requirements, and then judge whether protection can act correctly by using an indoor device through acquiring electrical parameters, so that faults are removed in time, and the economic loss of a power grid is effectively reduced. Because the debugging work is required to be carried out under the condition that the equipment is powered off, the efficiency of the work influences the power transmission time and the life and production of users. When a current transformer or a line phase sequence checking operation is replaced at an outdoor 35kV or above voltage class transformer substation line interval, the precision of a protection device and a measurement device needs to be judged through the addition of a protection tester, and four-core yellow-A phase, green-B phase, red-C phase and black-N grounding electrode test wires are used in the process.

Generally, the current special-purpose dosage test line is divided into two types, the traditional common test line matched with the protection debugging instrument is in a scattered bone winding type, and the length of the test line is about 3 m. Because the use process often causes four cores to be stirred together, especially when voltage and current are respectively applied to the protection tester, the time for arranging the test wires is required to take several minutes, and the time is roughly divided into wiring of the tester before debugging, wire changing in the debugging process and wire winding after the debugging is finished.

Based on this, the utility model designs an outdoor 35kV reaches above transformer substation with relay protection debugging appearance change-over mechanism to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an outdoor 35kV reaches above transformer substation with relay protection debugging appearance change-over mechanism to solve above-mentioned technical problem.

In order to realize the purpose, the utility model provides the following technical scheme: a relay protection debugging instrument switching mechanism for outdoor 35kV and above transformer substations comprises a bearing underframe, wherein one side of the top of the bearing underframe is hinged with a roll-over stand through a hinge, the top of the roll-over stand is provided with a handle, the bottom of the bearing underframe is provided with universal wheels close to one side of the roll-over stand, the other side of the bottom of the bearing underframe is provided with a fixed foot support, the roll-over stand is provided with four test wire switching mechanisms which are respectively used as an A phase, a B phase, a C phase and a grounding phase, and the bottom of the bearing underframe is provided with a test wire switching mechanism which is used as an external grounding of a relay protection tester;

the test line changeover mechanism comprises a rotating shaft, the two ends of the rotating shaft are respectively rotatably installed on the turnover frame through bearing seats, two bunch baffles which are distributed at intervals are arranged on the left side of the rotating shaft, a driven bevel gear is installed on the right side of the rotating shaft through a one-way bearing, a driving motor and a speed reducer are fixedly installed below the rotating shaft, a driving bevel gear is sleeved at the output end of the speed reducer, and the driving bevel gear is in meshing transmission with the driven bevel gear.

Preferably, the pivot outer wall is located two the winding is provided with the extension wire between the bunch baffle, the extension wire with relay protection tester be connected one end by the tip of pivot is drawn forth, the extension wire is connected one end with the outside detected equipment and is provided with the crocodile clamp.

Preferably, the fixed bunching block is arranged above the rotating shaft, a wire hole smaller than the alligator clip is formed in the fixed bunching block, and the extension wire penetrates through the wire hole.

Preferably, a control box for controlling each driving motor is arranged on the side face of the turnover frame, and a travel switch which can be touched and pressed by the crocodile clip is mounted at the top of the fixed wire harness block.

Preferably, an anti-abrasion cushion cover is embedded in the wire hole of the fixed wire bundling block.

Compared with the prior art, utility model's beneficial effect does:

the utility model discloses outdoor 35kV and above for transformer substation relay protection debugging appearance changeover mechanism mainly includes the bearing chassis, the roll-over stand, install in the universal wheel and the fixed heel brace of bearing chassis bottom, and install on the roll-over stand and the test wire changeover mechanism of bearing chassis bottom, can be used for twining rolling extension wire through pivot and two bunch baffle cooperations in the test wire changeover mechanism, and when receiving the line, drive the pivot rotation through driving motor, can realize automatic receipts line, combine the constraint effect of fixed bunch piece, it is more high-efficient to arrange the test wire; further, in order to make things convenient for the extension wire to take simultaneously, through one-way bearing erection joint between passive bevel gear and the pivot, be one-way transmission between pivot and the driving motor, during the actual pull use, directly draw and drag the extension wire can, need not to control driving motor reversal defence line again, but arbitrary length is along with taking along with using, and is more convenient.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive work.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the mounting structure of the test line switching mechanism of the present invention;

FIG. 3 is a schematic structural view of the test line switching mechanism of the present invention;

fig. 4 is a schematic view of the structure of the utility model for detecting the use state.

In the drawings, the components represented by the respective reference numerals are listed below:

1-load-bearing underframe, 2-hinge, 3-roll-over stand, 4-handle, 5-universal wheel, 6-fixed foot support, 7-test line switching mechanism, 71-rotating shaft, 72-bearing seat, 73-wire harness baffle, 74-one-way bearing, 75-driven bevel gear, 76-driving motor, 77-speed reducer, 78-driving bevel gear, 79-extension lead, 710-alligator clip, 711-fixed wire harness block, 712-control box, 713-travel switch, 714-anti-abrasion cushion cover and 8-relay protection tester.

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. All other embodiments obtained by a person skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.

Referring to fig. 1-4, the utility model provides a technical solution: a relay protection debugging instrument switching mechanism for outdoor 35kV and above transformer substations comprises a bearing underframe 1, wherein one side of the top of the bearing underframe 1 is hinged with a roll-over stand 3 through a hinge 2, the top of the roll-over stand 3 is provided with a handle 4, one side of the bottom of the bearing underframe 1 close to the roll-over stand 3 is provided with a universal wheel 5, the other side of the bottom of the bearing underframe 1 is provided with a fixed foot support 6, the roll-over stand 3 is provided with four test line switching mechanisms 7 which are respectively used as an A phase, a B phase, a C phase and a grounding phase, and the bottom of the bearing underframe 1 is provided with a test line switching mechanism 7 which is used as the external grounding of a relay protection tester 8;

the test line switching mechanism 7 comprises a rotating shaft 71, two ends of the rotating shaft 71 are rotatably mounted on the roll-over stand 3 through bearing seats 72 respectively, two bunch baffles 73 which are distributed at intervals are arranged on the left side of the rotating shaft 71, a driven bevel gear 75 is mounted on the right side of the rotating shaft 71 through a one-way bearing 74, a driving motor 76 and a speed reducer 77 are fixedly mounted below the rotating shaft 71, an output end of the speed reducer 77 is sleeved with a driving bevel gear 78, and the driving bevel gear 78 is in meshing transmission with the driven bevel gear 75; an extension lead 79 is wound on the outer wall of the rotating shaft 71 and positioned between the two bunch baffles 73, one end of the extension lead 79, which is connected with the relay protection tester 8, is led out from the end part of the rotating shaft 71, and an alligator clip 710 is arranged at one end of the extension lead 79, which is connected with external detected equipment; a fixed bunching block 711 is arranged above the rotating shaft 71, a wire hole smaller than the crocodile clip 710 is formed in the fixed bunching block 711, and the extension lead 79 passes through the wire hole; a control box 712 for controlling each driving motor 76 is arranged on the side surface of the roll-over stand 3, a travel switch 713 which can be touched and pressed by the crocodile clip 710 is installed at the top of the fixed wire harness block 711, and when the driving motor 76 is started to drive the extension wire 79 to be recovered to the crocodile clip 710, the crocodile clip 710 touches the travel switch 713 to send an in-place signal to a controller of the motor, so that the driving motor 76 is automatically controlled to stop; an anti-abrasion cushion cover 714 is embedded in a wire hole of the fixed wire harness block 711, the anti-abrasion cushion cover 714 can be made of hard silicon rubber or plastic, and the inner end edge is processed in a round angle mode, so that abrasion caused when the extension wire 79 penetrates through the anti-abrasion cushion cover is reduced.

Working principle embodiment:

as shown in fig. 1-4, when in use, the folding movable frame is placed on the bottom surface, the universal wheel 5 and the fixed foot supports 6 are respectively provided with a pair of symmetrical distribution at two sides, the folding movable frame can be kept stably placed, and the fixed foot supports 6 are in direct contact with the bottom surface, so that the movement of the universal wheel 5 can be limited, then the roll-over stand 3 is swung for a certain angle around the hinge 2 until the frame edge of the roll-over stand 3 is in contact with the frame edge of the load-bearing bottom frame 1, then as shown in fig. 4, four groups of extension leads 79 in the test wire switching mechanisms 7 as phases a, B, C and a grounding phase are respectively pulled out to a proper length, the alligator clips 710 at the end part are connected and conducted with the corresponding terminals of the secondary side junction box, the alligator clips 710 of the test wire switching mechanism 7 as the external grounding of the relay protection tester 8 are grounded, so that the debugging work can be started, after the debugging work is finished, the alligator clips 710 are taken down, the driving motor 76 is respectively started to withdraw the extension lead 79, when the driving motor 76 is started to drive the extension lead 79 to be withdrawn to the alligator clip 710, the alligator clip 710 touches the travel switch 713 to send an in-position signal to a controller of the motor, and therefore the driving motor 76 is automatically controlled to stop.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", 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 simplicity of description, and 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.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; the term "connected" may refer to a direct connection, an indirect connection through an intermediate, a connection between two elements or an interaction relationship between two elements, and unless otherwise specifically defined, the term should be understood as having a specific meaning in the present application by those skilled in the art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an outdoor 35kV and above for transformer substation relay protection debugging appearance change-over mechanism which characterized in that: the device comprises a bearing chassis (1), wherein a roll-over stand (3) is hinged to one side of the top of the bearing chassis (1) through a hinge (2), a handle (4) is arranged at the top of the roll-over stand (3), a universal wheel (5) is arranged at one side, close to the bottom of the bearing chassis (1), of the roll-over stand (3), a fixed foot support (6) is arranged at the other side of the bottom of the bearing chassis (1), four test line switching mechanisms (7) which are respectively used as an A phase, a B phase, a C phase and a grounding phase are arranged on the roll-over stand (3) side by side, and a test line switching mechanism (7) which is used as an external grounding of a relay protection tester (8) is arranged at the bottom of the bearing chassis (1);

test line changeover mechanism (7) include pivot (71), the both ends of pivot (71) respectively through bearing frame (72) rotate install in on roll-over stand (3), pivot (71) left side is provided with two interval distribution's bunch baffle (73), driven bevel gear (75) are installed through one-way bearing (74) in pivot (71) right side, the below fixed mounting of pivot (71) has driving motor (76) and reduction gear (77), drive bevel gear (78) have been cup jointed to the output of reduction gear (77), drive bevel gear (78) with driven bevel gear (75) meshing transmission.

2. The relay protection debugging instrument switching mechanism for the outdoor 35kV and above transformer substations according to claim 1, characterized in that: pivot (71) outer wall is located two the winding is provided with extension wire (79) between bunch baffle (73), extension wire (79) and relay protection tester (8) are connected one end by the tip of pivot (71) is drawn forth, extension wire (79) are connected one end with the outside detected equipment and are provided with alligator clip (710).

3. The relay protection debugging instrument switching mechanism for the outdoor 35kV and above transformer substations according to claim 2, characterized in that: the fixed wire bunching device is characterized in that a fixed wire bunching block (711) is arranged above the rotating shaft (71), a wire hole smaller than the crocodile clip (710) is formed in the fixed wire bunching block (711), and the extension wire (79) penetrates through the wire hole.

4. The relay protection debugging instrument switching mechanism for the outdoor 35kV and above transformer substations according to claim 3, characterized in that: a control box (712) used for controlling each driving motor (76) is arranged on the side face of the turnover frame (3), and a travel switch (713) capable of being pressed by the alligator clip (710) is installed at the top of the fixed wire harness block (711).

5. The relay protection debugging instrument switching mechanism for the outdoor 35kV and above transformer substations according to claim 3, characterized in that: an anti-abrasion cushion cover (714) is embedded in a wire hole of the fixed wire harness block (711).